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Shenzhen Xin Xin fire alarm system installation and commissioning guide

A. Preparations before commissioning

1. Data Preparation: The information management personnel should be informed in detail about the configuration of the engineering system (including the system diagram, plan, instruction manual, owner's or contractor's requirements for the project, points, etc.).

2. Check whether the system installation meets the design requirements according to the system design drawings.

3, the application of the table and tools used in the debugging of spare parts, such as multimeter, wiring tools and encoders, screwdrivers, needle nose pliers, diagonal pliers, terminal resistance and so on.

4. Conduct self-inspection on the system and understand the construction of the project:

1 Check whether the system installation meets the design requirements according to the system design drawings. If there are any discrepancies in the system design drawings, you should inform the other party to handle them accordingly.

2 Understand whether the on-site installation equipment control box can be connected with our alarm linkage system as required. If it does not meet the requirements, it should promptly inform the other party to make corresponding changes. Understand whether the fire hydrant button light adopts light emitting diode or white light to understand whether there is equipment with large current working at the scene, such as positive pressure air supply valve, electric fire damper, separation tripping, etc., calculate the required current for lighting, such as the host power supply If not, it is necessary to inform the engineering side of the need for additional power.

3 The fire alarm host, radio communication cabinets, CRT and other equipment are individually checked for power supply, and the system can be debugged after normal operation. If the equipment is found to be abnormal during the stand-alone inspection, the causes should be analyzed and resolved in time.

(4) Whether the insulation resistance and system grounding of the test system's line-to-ground meet the requirements of the “Fire Automatic Alarm System Construction and Acceptance Specifications”, the ground insulation resistance is not less than 20 megohms, and the ground-to-ground resistance cannot be greater than 4 ohms when using the working ground. When using joint grounding, the ground resistance to ground cannot be greater than 1 ohm.

5 Check the circuit of the system and deal with wrong lines, open circuits, short circuits, and grounding.

6 Connect the AC power supply. The measurement voltage range should not exceed 220V+10%-15%. Connect the backup battery and make the final preparation for the commissioning.

B, system debugging

1, according to the system design drawings (plan or system diagram) on the installation of detectors, manual alarm buttons and various modules (input and output modules) are encoded, if the drawings do not have the number of detectors and various modules, commissioning personnel should Cooperate with the construction party to accurately mark the actual address code of the detector and various modules on the drawings.

2. According to the code line of the coded address, the corresponding circuit of the controller, the number of the detectors and various modules, the address code table is sorted out and displayed according to the address code table and the control requirements of the system fire fighting equipment (fire code) Information, system information, linkage programming. The linkage plan is provided by the firefighting installation company. If the linkage relationship scheme does not meet the fire code, the constructor must sign the confirmation (for example, request smoke alarm linkage pump, etc.).

General requirements for linkage logic editing:

(1) Fire hydrant system: Manual alarm button action of fire hydrant → Activate the output module of the alarm bell or the audible and visual alarm on this floor or upper and lower layer → Turn on the alarm bell or the sound and light alarm power supply. Fire hydrant manual alarm button action → start the fire pump.

(2) Automatic sprinkler system: water flow indicator action signal → start the output module of this layer to control the alarm bell or sound and light alarm → turn on the alarm bell or sound and light alarm power supply. Pressure switch action signal → start spray pump. Or flow indicator action signal → start the spray pump. Or combine the flow indicator action signal and pressure switch action signal → start the spray pump. (The specific linkage requirements are based on local conditions)

(3) Positive Pressure Air Supply System: The linkage relationship of the mechanical positive pressure air supply system is as follows: detector alarm signal or manual alarm button alarm signal → open positive pressure air supply port → positive pressure air supply port open signal → start positive pressure air blower. The opening amount of the air outlet for positive pressure can be set according to the following requirements: 1) The opening of the air outlet for positive pressure in the smoke prevention stair should be opened for the entire stairwell, so that a uniform positive pressure is formed in the entire stairwell; 2) Positive in the front room The opening of the pressure air outlet shall be opened in accordance with the evacuation order of the personnel, that is, the positive pressure air outlets of the upper and lower layers of the alarm layer and the alarm layer shall be opened.

(4) The linkage logic of the smoke exhaust system: the detector alarm signal in the exhaust area or the manual alarm button alarm signal in the exhaust area → the smoke exhaust port that starts the smoke area (open) → the smoke exhaust port is open Signal → Activate the exhaust fan in the corresponding exhaust section (or start the exhaust fan at high speed). The closing signal of the exhaust fire damper (280°C) at the entrance of the exhaust fan → Stop the exhaust fan in the relevant part.

(5) The linkage relationship of the fire shutter doors is as follows: 1) The fire shutter doors, which are used only for fire protection, can be landed in two steps instead of two. Detector alarm signal or manual alarm button alarm signal → Start the fire shutter door around the fire zone and descend it to the bottom. 2) The fireproof rolling shutter door used on the evacuation pasغير مجاز مي باشدe shall be lowered in two steps. The linkage relationship is as follows: the smoke detector alarm signal installed on both sides of the fireproof rolling shutter door → the fireproof rolling shutter door is lowered step by step, and the fireproof rolling shutter door is lowered to the floor (floor) Stop after 1.8M, when the temperature detector mounted on both sides of the fireproof rolling door sends out an alarm signal → start the fireproof rolling door and descend again to fall to the end.

(6) Fire alarm device and fire accident linkage: The fire alarm device mainly refers to an alarm bell or sound and light alarm in a high-rise building. It has an audible and visual alarm that is automatically turned on, and the opening sequence and the opening of the fire accident broadcast are enabled. The same order. In the automatic alarm system, the linkage relationship between the open alarm bell or the sound and light alarm and the fire accident broadcast is as follows: the fire detector alarm signal or the manual alarm button alarm signal → the start control alarm bell or sound and light alarm device, the output of the fire accident broadcast Module → Turn on the alarm or audible and visual alarm power, and connect the fire accident radio line. The opening sequence of fire alarms and fire accidents in high-rise buildings is as follows: 1) When a fire occurs on floors 2 and 2 or above, the fire floor and its adjacent upper and lower floors should be connected first; 2) Fire on the ground floor At the time, it is advisable to connect this floor, the second floor and the underground floor first; 3) When there is a fire in the local lower room, it is advisable to connect the underground floors and the first floor first; single-storey buildings with multiple fire zones should be connected to the fire first. The fire zone and its adjacent fire zone;

(7) The linkage relationship of the fire elevator is as follows: Manual alarm button "and" detector alarm signal → start the fire elevator forced landing output module action → The fire elevator is forced down to the first floor and returns a signal to the fire control room. The best way for a fire lift to land on a forced landing is to manually land in a fire control room.

(8) Non-fire power switch: The logic of non-fire power switch linkage is as follows: manual alarm button "and" detector alarm → start non-fire power switch output module action → this module starts circuit breaker (air switch) trip mechanism The interrupter (air switch) trips to cut off non-fire power. The best way to cut off the non-fire power supply should be manually removed in the fire control room.

3, using a multimeter to install the detector and various modules (hand report, monitoring, control module) of the signal bus to check, initially determined that the line is not short-circuited, grounded before the next step. For the module power cable, it must be measured with a multimeter without short circuit and grounding, and at the same time ensure that the field terminals are fully connected and no exposed wire ends can be powered. For multi-line linkage control cabinets, because there are many lines connected with the field device control cabinet, it should be checked according to the requirements of the line. Terminals (terminal loads, resistances, diodes, etc.) that should be added at the site should be connected, and they should be properly connected. Each line in the control cabinet can be connected to the control cabinet only after being measured by a multimeter. Strictly check that the terminal is not connected to a strong wire. It is forbidden to connect the control line to the host of the control cabinet first, and then connect the line of the field device.

4. Accurately connect the signal lines that make up the address code to the controller and clearly mark the lines. Exclude each line fault, detector failure, and module failure.

5. When troubleshooting, the single point test function on the host computer can be used to detect the communication status of the detector or module and the host computer, and whether the signal loop has interference signals.

6. One by one, the smoke detector shall be tested for smoke alarms. For alarms and false alarms, it shall be promptly replaced and re-tested. At the same time, verify that the corresponding display relationship between the detectors is correct. If errors occur, adjust them through on-site programming.

7. Perform simulation tests on the control module and control program according to the linkage control requirements until the system is all normal.

7.1. Manually start each controlled fire-fighting linkage equipment, such as: fire radio, fire alarm, positive pressure tuyere, positive pressure fan, exhaust valve, exhaust fan, fire pump, spray pump, and fire elevator. Fire power cutoff, accident lighting, etc., and check the feedback signal of each controlled device is correct, if not correct it must be corrected. If the device fails to start, the possible causes are: incorrect programming or incorrect coding correspondence; 24V power is not connected; the control box of the device is not in automatic state; the control box of the device is not powered.
7.2, the controller is set to automatic state, the detector smoke alarm, check the linkage of the controlled device to meet the linkage control requirements. Matters needing attention: a. Establish a good relationship with customers, efficient and timely completion of their own work. b. Proper, clear, and principled handling of the intervention of non-company-provided products in commissioning projects. c. Embarrassment, politeness and patience guide the customer to solve the technical problems in debugging and complete the commissioning task in a timely manner.

C. After commissioning work:

1. After the system simulation alarm and simulation linkage test are completed, the system shall be powered on and ready for acceptance after running for 120 hours without any fault. The commissioning engineer of the system completes the commissioning work. Before delivering the user for operation and use, the relevant information delivery users and company archives must be organized for system maintenance and use in the future.

The data that is usually required to be collated and archived should include:

a. Fire-fighting system as-built drawings: System diagrams, floor plans with detectors and various module codes.

b. System configuration: the number of loops in the system, the number of encoded addresses in each loop, the distribution of the floor display panels, and the display range.

c. The system displays the correspondence: the correspondence between each coded address and the actual address, and the device type of each coded address.

d. System linkage logic: The distribution of the fire fighting equipment in the system and the logic of the operation.

2. After the commissioning of the project, the monitoring work shall be performed continuously during the operation. 3, make user maintenance personnel, on-duty personnel training.

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On the evening of March 5, the Russian Natural Gas Industry Corporation announced that Russia and Uzbekistan have negotiated a telephone to find a solution to the problem of debt repayment. The two parties decided that Russia will immediately lift the restrictions on the supply of natural gas to Uzbekistan, and Uzbekistan will cancel restrictions on Russia's supply of gas to Europe through Ukraine.
On March 4, Kuiprianov, a spokesperson for Russia’s Natural Gas Industry Corporation, announced that due to the Ukrainian side's refusal to resume talks with the Russian side on the debt issue and that it had no intention of taking practical measures, the Russian side will be at Moscow’s time on March 4th. Since then, the supply of natural gas has been reduced again. The previous day, the company had already reduced the supply of natural gas to Ukraine by 25%.
Although the Russian side has repeatedly claimed that Russia’s move will not affect the supply of gas to European users, it still aroused serious concern from the European Union. The EU calls on Russia and Ukraine to resolve the natural gas dispute as soon as possible and hopes that Russia’s transit of Ukraine’s natural gas exports to the EU will not be affected.
As we all know, Russia and Ukraine had natural gas battles in January 2006. At that time, the Russian Gas Corporation interrupted the supply of natural gas to Ukraine, resulting in a shortage of natural gas throughout Europe. Ukraine imports 71% of its natural gas from Russia, and 80% of the natural gas that Russia's natural gas industry exports to Europe needs to be transported through Ukrainian pipelines.
Ukrainian gas company immediately also made a tough stance, saying that if Russia further reduce the supply of natural gas to Ukraine, Ukraine will limit the supply of natural gas to Ukraine via Ukraine to Europe.
In the face of the Ukrainian "calls," Russia's natural gas industry is not satisfied. A spokesperson for the company said: "If Uzbekistan does not return to the negotiating table, Russia will not rule out further reductions in natural gas supply."
On 4 March, the Ukrainian President and the newly elected President Medvedev made an emergency call to seek a proper solution to the natural gas dispute. Medvedev urged Uzbekistan to meet the agreement reached by the two countries’ heads of state on February 12. Uzbekistan will unconditionally repay the arrears as soon as possible.
On February 12, Ukrainian President Yushchenko made an agreement with President Putin on the gas dispute between the two countries during his visit to Russia. Yushchenko promised to start paying back the arrears on February 14th and Russia will continue to supply Ukrainian supplies. gas. Due to the domestic political struggle in Uzbekistan, the Uzbek government headed by Tymoshenko refused to implement the agreement reached by the Ukrainian and Russian heads of state and even refused to continue negotiations with Russia.
On March 5, Ukrainian President Yushchenko sent an urgent letter to Tymoshenko and in a very harsh tone, he instructed the government to instruct Ukrainian Oil and Natural Gas Company to immediately implement the agreement signed by Uruguay leaders on February 12 and negotiate with the Russian side.
Most of the natural gas imported by Ukraine is produced in the Central Asian countries, and Russia’s supply of Ukrainian natural gas is only a supplement to the Central Asian countries’ supply of gas to Ukraine. As a result of the severe cold, the supply of natural gas to Uzbekistan by Central Asian countries, especially Turkmenistan, drastically decreased. At the request of Ukraine, Russia began supplying emergency natural gas to Ukrainians on January 1 of this year to make up for the supply and demand gap. Up to now, the Russian natural gas supply to Ukraine has reached 1.9 billion cubic meters, worth 600 million U.S. dollars, but the Ukrainian side has not yet paid off the arrears.
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• Working: High Speed Mixer

                                                                                                                                                                                                                                           

• Application: Powder, Granules

                                                                                                                                                                                                                                           

• Application Area: Chemical

                                                                                                                                                                                                                                           

• Mixing Drum Shape: Drum

                                                                                                                                                                                                                                           

• Operating type: Cycle Operating

                                                                                                                                                                                                                                           

• Total Volume: 50/100-1600/4000

                                                                                                                                                                                                                                           

• Unloadingway: Pneumatic

                                                                                                                                                                                                                                           

• Lead Time: 7-15 Working Days

                                                                                                                                                                                                                                           

• Life Long Service: Yes

                                                                                                                                                                                                                                           

• Export Markets: Global

                                                                                                                                                                                                                                           

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• Specification: different model, machine size is different

                                                                                                                                                                                                                                           

• HS Code: 8479820090

                               

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• Stirring Type: Forced

                                                                                                                                                                                                                                           

• Certification: CE, ISO

                                                                                                                                                                                                                                           

• Layout Type: Horizontal/Verticle

                                                                                                                                                                                                                                           

• Additional Capabilities: Drying, Granulating, Coating

                                                                                                                                                                                                                                           

• Condition: New

                                                                                                                                                                                                                                           

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• Weight(T): 2.8-18

                                                                                                                                                                                                                                           

• Warranty: 5 Years

                                                                                                                                                                                                                                           

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• Spare Parts: Free of Charge

                                                                                                                                                                                                                                           

• Transport Package: Seaworthy Packing

                                                                                                                                                                                                                                           

• Origin: China

                                                                                                                                                                                       

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Shenzhen Xinxin Answers Common Faults of Fire Alarm System

1. Why did the alarm bell and the audible and visual alarm fail to act after the fire was reported?

Possible reasons are:

a. The “Voice Link” on the panel of the host computer is not turned on (the “Voice Link” indicator is not on).

Processing method: open the panel control permission, press the “Voice Link” button once, and “Voice Link” turns on (the “Voice Link” indicator lights up).

b. There is fault information of the linked alarm or audible and visual alarm on the host.

Treatment method: Troubleshoot information, check whether the code of the alarm control module or intelligent acousto-optic alarm is correct, and whether the wiring is loose.

c. DC 24V power is not supplied to the corresponding alarm or audible and visual alarms.

Treatment method: Check whether the 24V DC power is supplied to the corresponding alarm or audible and visual alarm. Connect the DC 24V power cable as required and turn on the DC 24V.

d. The type of the output module of the alarm bell is not set to be a far-sound or audible and visual alarm.

Processing method: Set the type of the output module that controls the alarm bell to a remote sound or audible and visual alarm.

e. There is no alarm output associated with the alarm or audible and visual alarm in the linkage setting.

Processing method: Set the corresponding linkage relationship in the linkage setting, and the target points to the alarm bell or sound and light alarm.

2. After the fire was reported, why didn't any equipment request action?

Possible reasons are:

a. The “General Linkage” on the panel of the host panel is not open (the “General Linkage” LED is not lit).

Processing method: open the panel control authority, press the "general linkage" button, "general linkage" open ("general linkage" indicator light).

b. There is no linkage setting data in the linkage setting, or the “registration” item in the linkage data is not selected.

Processing method: Enter the linkage setting item of the host, set the linkage relationship according to security, and select the "registration" item.

3, after the report of the fire, why the multi-line linkage module on the host does not have any linkage request or action?

The multi-line linkage module on the mainframe is generally used to control the more important fire-fighting equipment. In order to prevent misoperation, there are multiple protection measures. In addition to being controlled by the "general linkage" switch, automatic linkage is also controlled by the "disable/enable" lock control switch and the "manual/automatic" lock control switch on the host. In the “disabled” state, no operation can start the multi-line module; only the “permitted” and “automatic” states respond to the host's action request. The multi-line module can be started and stopped manually either in the "manual" or "automatic" state. At the same time, it should also check whether the corresponding linkage relationship is set correctly.

4. After the fire was reported, there was a device requesting action, but why didn't the field device act?

The feedback signal of the device needs to be returned by the control and monitoring module. Possible reasons are:

a. The status of the field device does not have an automatic status because it is not controlled by the module and it does not start.

Treatment method: Place the equipment in the automatic state.

b. The device has started, but the device feedback signal line is dropped. Check the device feedback signal cable and connect the cable.

5. Why does a certain circuit fail to report a fault or feedback, and then it automatically disappears?

Possible reasons are:

a. The insulation of the loop signal line to the ground is not good, and the insulation resistance to ground is less than 3 MΩ.

Treatment method: check the line.

b. The resistance of a device to ground is less than 3MΩ.

Treatment method: check the line.

c. There are individual devices in the entire loop because the leakage current is too large, and lightning damage damages the loop current.

Treatment method: Check out the damaged equipment and replace it. You can use the method of segmentation to find the fault.

d. A common detector or other manufacturer's equipment is incorrectly installed on the circuit and causes a current draw.

Treatment method: Check the equipment and remove the equipment that was installed incorrectly.

e. There are strong interference signals on the circuit, such as the signal line and the strong electric circuit, and the strong magnetic field nearby.

Treatment method: Reroute the cable, separate it from the strong line or avoid the interference source.

f. A short circuit between the return line and the slot in the plane layer.

Treatment method: check the line.

6. Why does a loop alarm only work once in a chain and can't the fire alarm or feedback be reported?

Such problems are usually caused by a short-circuit between the detector/module circuit and the output of the control module. When the module is not operating, the circuit communication seems to be very normal. When the module is activated, the circuit is affected. Therefore, the device is affected. A moving circuit can no longer report a fire. Treatment method: Check the line and connect the line as required.

7. Why does the host not only report the main power failure but also report the power failure?

Possible reasons are:

a. The host power feedback cable is not connected or damaged. Remedy: Reconnect the host power feedback cable or replace the host power feedback cable.

b. The type of power feedback set in the “Power Settings” menu of the main unit does not match the feedback type of the actually used power supply. Solution: Enter the "Power Settings" option under the "System Settings" menu of the host to set the parameters correctly.

8. Why does the printer play some garbled characters when the alarm occurs?

The host system can set up a variety of printers and their communication parameters. The possible causes for printing garbled characters are:

a. The printer type that is set does not match the type of printer that is configured. For example, it is a stylus printer when set to 01 Printer, and a thermal printer when it is set to 02 Printer. Processing method: Enter the "Printer Settings" option under the "System Settings" menu of the host to correctly set the parameters.

b. The printer's communication speed setting is incorrect. Usually, the speed of the dot matrix printer is 2400 BPS, and that of the thermal printer is 9600 BPS. Processing method: Enter the "Printer Settings" option under the "System Settings" menu of the host to correctly set the parameters. The printer's communication speed can be obtained by printing the self-test (operation: press the left button first to turn off the printer power indicator, then press the right button and press the left button immediately, the printer starts the self-test. The self-test prints The result is the current communication speed used by the printer.) If the self-tested rate does not match the rate set by the host, change it through the printer's own dip switch or jumper.

9. When two or more hosts are connected to a network, why host 2 can receive alarm information from host 1, but host 1 cannot receive data from host 2?

When the host is connected to the network, the master-slave networking mode is adopted, that is, the host computer is the host computer in the networked machine, and the other hosts are the slaves. However, after the host computer number is registered, the alarm information generated by the local machine can be transmitted through the network cable. Give each other. No. 2 function can receive the alarm information of No. 1 machine, indicating that the network line has been connected, and No. 1 machine has registered No. 2 host in the networking setting; No. 1 machine can not receive the alarm information of No. 2 host, but can only indicate No. 2 The host did not register host 1 Processing method: Enter the "Network Settings" option under the "System Settings" menu of the host computer, correctly set "Local Number", "Transmission Rate" and register all hosts in the network.

10. What is the reason why the host reports XX circuit board XX circuit fault?

When the host circuit is short-circuited, grounded or open circuit fault, the host will automatically report “XX circuit board XX circuit short circuit fault”. Specifically, whether the circuit is short-circuited, grounded, or open-circuited, can be determined by viewing the instructions on the internal interface board. There are four indicator lights on the interface board. Under normal circumstances, a green light is always the power indicator, and a red light is shining. For CAN communication indication, the two yellow lights are the line fault indications of the first and second loops respectively (the line is always on when the line is short-circuited or grounded).

Treatment method: Check the loop circuit is short circuit, ground or open circuit.

11. Which fault can be isolated and which faults cannot be isolated?

Pressing the “Isolation” key on the panel can isolate all detectors and modules that are alarming (fire alarm, request/feedback, fault) on all networked hosts; only any detectors of this unit can be isolated in the detector/module setup menu. Module. Isolation does not isolate the host from system failures such as: host communication failure, host power failure, interface board communication or loop failure, printer failure, replay disk failure, etc.

12. Why does the host fail to report a fire alarm and fail to report a fault, but the detector and module inspection lights are still blinking?

The sub-phenomenon is mostly interference signal on the line. If the signal line is connected to the ceiling metal but not grounded, you can use the “single-point test” function in the “operation” menu to see the related parameters of the single-point device. Treatment method: disconnect the line, a period of access

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Network Video Surveillance is IP Surveillance. IP is the abbreviation for Internet Protocol. It is one of the most commonly used protocols for communication over computer networks. Network video surveillance is the transmission of digital video information over wired or wireless IP networks. As long as the network is reachable, video monitoring and recording can be realized, and this monitoring can also be perfectly combined with many other types of systems. With the ever-increasing range of applications, there are more and more errors in the application of network video surveillance in the security industry.

Myth # 1: Transmission of video on the Internet is not secure enough Fact: Although the original purpose of the network was to make the information public enough, it could be used as long as the proper security measures such as firewall, VPN, or password protection technology were used. To transmit some highly sensitive information.

In fact, many banks and some financial institutions use the Internet to handle some global financial things. There is no doubt that it must also be a reliable medium for security surveillance and remote monitoring. Compared with digital surveillance, the confidentiality of analog surveillance is much worse, and it has almost no confidentiality. Anyone can see these so-called security information under the analog system, and even falsify this information, causing huge losses. IP monitoring will never happen.

Myth #2: I'm installing an analog surveillance system and I don't have any IP monitoring. Fact: Perhaps DVR providers want people to believe this, but in fact, the development of video server technology has bridged the gap between analog surveillance and digital surveillance. The insurmountable gap. Just connect the analog camera to the video server, and then convert the video signal collected by the analog camera into a digital signal and transmit it on the network. In other words, the video server allows the analog camera to have the function of a network camera. In fact, for most users who already have analog monitoring systems, they prefer to choose their own way to build their own IP surveillance systems, or hybrid IP surveillance systems consisting of network cameras and video servers. In short, your existing analog surveillance system will never stop you from moving toward IP monitoring.

Myth #3: The video of the network video is not as clear as the simulation. Fact: The real-time monitoring effect of the network camera is exactly the same as that of the video playback. Of course, the image has undergone digital compression processing, and the effect is slightly less than that before the unprocessed analog signal. The traditional hard disk recorders are inconsistent with the monitoring and playback effects. Because the signals are directly transmitted during monitoring, the effect is good, and the playback results are also compressed. The effect depends on the compression technology used by different manufacturers.

Moreover, with the development of technology, network cameras and IP monitoring technologies can reach a megapixel resolution, and analog cameras can only reach a resolution of 40,000 pixels at most because of their technical limitations.

Myth #4: If network congestion occurs or even a sudden disconnection, IP monitoring will suddenly collapse, so it is very unreliable. Fact: IP network architecture was able to provide redundant backup functions in the early 1960s and early 1970s. It has always been a huge demand.

As of today, various storage servers, network switches, and optional routers have been providing such simultaneous backup functions. The function of the storage server is to ensure that the offline and convenient data can be retrieved. The application of backup power, hot-swap RAID disk, fault-tolerant storage, and dual network adapters can help implement redundant backup functions. Although a small network structure may not require all of these complex security measures, choosing a high-quality IT component is in any case much more reliable than a traditional CCTV solution, a VCR or a DVR, and is urgent in the event of a problem. Processing is also much less time consuming than DVR solutions.

Network monitoring is not mature?

Myth #5: IP monitoring is good, but it seems to be a short distance away from us, at least for 5 years. Fact: It seems that the era of application of IP monitoring is just the crux of all problems! Let us explain with specific data. Since the launch of the first network camera in 1996, 200,000 network cameras have been successfully sold and installed, and this number is also rising rapidly year by year, which fully demonstrates that people’s interest in IP monitoring is also increasing. Because people gradually found that, whether it is from the غير مجاز مي باشدt or reliability or any other point of view, IP monitoring has been proven both for the current and future-oriented mature solutions.

Myth 6: If all the video information is transmitted over the network, then it will not cause network congestion or even collapse. Fact: If only a few monitoring points are available, the existing Fast Ethernet (100Mbit) can satisfy the transmission. Bandwidth requirements. The user can adjust the bandwidth according to the compression ratio and the frame rate. If it is multiple monitoring points, we recommend that you have a dedicated network line. This is quite similar to rail transit. Once the existing rail line becomes congested, it will have to build some new rail lines to ease the strain on the line. Moreover, for large-scale enterprise applications, the local network is usually a gigabit LAN. Using switches and routers, the network can be divided into different network segments.

Moreover, the intelligent function of the network camera can already choose whether to send video according to conditions such as event triggering, dynamic detection, and preset time. The amount of video information that needs to be transmitted is not too much. Almost 10% of the time it takes to transmit information, and no video information is transmitted on the network in 90% of the time.

Myth #7: Network cameras are much more expensive than analog cameras. IP surveillance is too expensive. Fact: In terms of price, network cameras are more expensive than analog cameras. But you should also see that its function is analog video camera analog, digital signal compression, image transmission and intelligent control functions. Compared to all غير مجاز مي باشدts of monitoring systems based on DVR architectures, IP monitoring is cheaper than it is. For an analog system, it's not that you buy a DVR and it's all okay. You also have to purchase a lot of related equipment such as a large number of analog video cables. Moreover, if you want to achieve PTZ control, you also need to lay a lot of additional video cables, and PTZ function in the IP monitoring is still achieved through the network cable, and does not require additional cables. Original address: http://security.zol.com.cn/349/3498643_all.html

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Foreword

This Konka gave its own plan, M1 is Konka's new smart TV, its built-in HDR and MEMC, to improve the quality of all aspects, of which 55-inch M1 TV is also the main karaoke entertainment features, allowing users at home arbitrary Enjoy K song fun.

The design is simple and practical

It is undeniable that the products of traditional TV companies are getting younger and younger, and the design of fashion, lightness and beauty has become the mainstream. The same is true for the Konka 55M1. Mocha Gold looks young and dynamic. With ultra-narrow frames and a slim body, the TV is more stylish.

The back design is very simple, the metal backboard is full of texture, all interfaces are on the left side of the front of the fuselage, do not worry about plug and pull operation when the wall is mounted.

The interface provides an RJ45 network card, video input, HDMI interface 2, in addition to USB2.0 and USB3.0 interfaces, external connectivity is very abundant.

TV base can be said that there is not much difference between similar products, this type of base is classic and beautiful, different from the past is the base of Konka 55M1 slightly longer, and the overall height of the TV slightly elevated. The processing technology of the metal surface adopts the fast cutting process, which makes the TV work very fine and the appearance is very beautiful. Of course, because the HiFi Pro sound system is built in, the sound quality is far better than the ordinary built-in speaker TV.

Yi pomelo system is powerful

Konka 55M1 TV adopts its own YIUI Yiyou system. This system interface is very intuitive. The first screen puts the main sections on the screen. Among them are video, audio, entertainment, and applications.

Music interface, on demand, search for songs, like to listen to the song of the user blessed, with HiFi Pro sound after the effect is quite good.

It is worth mentioning that the Konka 55M1 series TVs have built-in K songs. By cooperating with Tencent’s national K song, Konka 55M1 TVs have a huge amount of K songs. If you don’t have a microphone, you can directly use the remote controller to sing. In addition, the mobile phone can be paired again. After acting as a microphone. Of course, qualified users can purchase Konka microphones alone to achieve perfect results.

TV Channel content comes from the Tencent platform, relying on Tencent's powerful content array, Konka 5555M1 outstanding performance in video resources.

The game channel provides a wealth of game apps and third-party APP installations through USB devices.

Educational content is a feature that many TVs currently have built-in. The Konka 5555M1 is no exception. TV has built-in edutainment resources for children and younger students.

Konka 5555M1 TV comes with an application market and some practical APP, users can read the installation program directly from the USB flash drive and other third-party equipment, excellent scalability.

The system settings interface consists of large icons and the content is very intuitive. In this option, you can perform system upgrades, account management, network adjustment, and Bluetooth adaptation. You can also see that the machine has hardware information.

Through the built-in parameter table can be seen, Konka 5555M1 TV adopts LGD original IPS panel, 3840x2160 physical resolution, 178 degrees wide-angle performance. The best performing dot-matrix intelligent backlighting technology is used on the backlight. On the processor, the A54 quad-core processor is used together with the PowerVR 7800 image unit, which is matched with 2GB of memory and 16GB of storage space. Due to the adoption of eMMC 5.0 technology, the read and write speed is very fast. In addition the unit supports 2TB external storage devices.

Video resources Tencent strong help out

The film and television resources come from Tencent and are rich in content. If there are members, it is a good choice for viewing.

Video column introduction interface, with rating and content introduction.

You can select multiple resolutions for playing online video.

K song function experience mobile phone all get fixed

One of the highlights of Konka's 55M1 TV is the support for the K song mode. It can be connected to mobile phones through K-pop app and K-song function.

The National K song page can directly control a series of operations when the K song is played through the TV remote controller. The use method and method are also very simple. All mobile phones and televisions are installed with the K-pop app, and it is guaranteed to connect via the APP scan TV-side QR code under the same WIFI.

After the mobile phone is connected to the TV, you can use your mobile phone to play songs, and you can also select original sounds, tone adjustments and other functions. Of course, the most critical thing is to use a mobile phone directly as a microphone. For consumers who do not purchase a microphone, using mobile phone K songs is also a convenient solution.

The adoption of the Konka 55M1 TV is a multi-core processor that supports H.265 (HEVC) 4K 10bit HDR. In addition, it also has good decoding capabilities for VP9, ​​H.264 and AVS+.

4K H.265 video Paris night scene

4K H.264 Dubai Night Scene

LG H.264 4K video, this video is used to show the high contrast and dark field effect of OLED, and through the operation of HDR technology and frequency conversion technology, the overall brightness of the picture is very good, and the dark place is also dark.

4K H.264 encoding the Potala Palace

4K H.265 Sichuan cuisine

4K H.265 Brazil World Cup Colombia VS Uruguay

At the same time, it has perfect playback capability in 1080P video, and can select audio tracks, subtitles, and other content in the video.

Captain America 3 1080P, the resolution is still higher after the screen is converted to 4K output, which shows that the 2K to 4K effect of this 55M1 TV is good.

The Pacific Rim 1080P, this scene is overall dark, because it is rainy. With HDR operation, the brightness of the screen is very even and the whole body looks very comfortable.

Pearl Harbor 1080P, under the fierce battle picture, through the operation of MEMC technology, the fluency of the picture has been greatly improved. At the same time, the MEMC PRO technology of Konka 5555M1 TV does not have the unique edge blurring phenomenon on the entry-level MEMC, and the picture clarity is maintained. High level.

Professional 4K image test for accurate color space distribution

Through the 4K test chart, we can see that the Konka 5555M1 TV's black and white gray-scale transition is relatively smooth, there is no obvious color problems, and the dark details are also better.

In the same way, the 5555M1 level is also very good in the color space distribution display capability. The left side of the yellow display shows a more quasi-regular triangular star, and other colors are also very accurate.

With the great advantage of 4K resolution, the native display capability of the smallest font is in place.

Panel performance test has higher color accuracy

Konka's 55M1 series TVs support HDR and solid-color hard screen technology, which can further improve the performance and level of the picture. Let's take a look at the difference in the actual picture.

Instrument testing shows that the value of the color gamut of the Konka 55M1 TV is not very high, SRGB color and public green coverage is insufficient, which means the machine does not reach the 100% SRGB color gamut, the same NTSC is only about 75 ~ 80% or so. The brightness of the machine measured the maximum brightness of 368.5 nits, much higher than similar models, high brightness is also one of the conditions necessary for HDR.

Through instrument testing, you can see Konka 55M1 TV in the standard image mode, the color accuracy is still commendable, the maximum deviation appears in dark blue, Delta E is 6.82, and the overall color deviation is only 3.93, it should be said that the overall color is still good.

Ultra-clear wallpaper quality photos outstanding

From the ultra-clear picture shows you can see Konka 5555M1 TV screen brightness is very uniform, the color is also very good.

The bright part of the picture is bright, but the dark details are kept at a good level.

HDR technology shows very good results on this map, the overall brightness of the screen is even, and all started HDR TVs have a dark side of the dark problem.

The color space is precisely distributed and the image clarity is also very good.

The blue-white transition is smooth and there are no obvious gradient patches.

The Konka 5555M1 TV also supports timely HDR technology, which can convert non-HDR content to HDR information and output.

After the HDR is turned on, the brightness of the screen is improved. The brightness of the petals is obviously increased, the overall picture is brighter, and the dark part of the lower right corner is maintained at the original level. This shows that with the help of the local lighting technology, the screen brightness will be adjusted precisely according to the required content, instead of the overall highlighting and the loss of the dark part effect.

Sound experience and evaluation summary

The big selling point of the Konka 5555M1 is music, because it uses HiFi Pro audio unit, this set of sound uses a new type of neodymium iron boron material, neodymium iron boron material characteristics are extremely high energy product and coercivity, can make audio equipment Made smaller, lighter and more bountiful. Therefore, the high-frequency, middle-frequency and low-frequency parts can be called strengthist. In addition, contrary to the alleged sound design of traditional TVs, the HiFi Pro audio of Konka's 55M1 TV adopts a forward-sounding layout that allows users to enjoy the same listening experience as the visual direction.

The test movie is an independent day 2, 1080P resolution 7.1 channel. The sound effects of the Konka 5555M1 TV are impressive. The aircraft whistled and outdated sounds were accurately positioned, and the bass was also great.

During the 13-hour crisis, the CIA’s security team resisted the local militia organization at the secret base. HiFi Pro's interpretation of the clips was in place. The buzz did not sound, and the bass effect after the RPG explosion was relatively good. And there is no obvious sonic boom problem. The whistling sound of the ** forest bullets under the rain is very sensational. It is said that the Konka 55M1 TV's woofer unit uses a wool composite paper cone material, cavity volume is large, this will ensure low distortion reduction, but also can improve the low-frequency dive, and make the bass intensity even more shocking.

It is worth mentioning that this HiFi Pro stereo can also be connected to a mobile phone and used as a home audio system when the TV is turned off. It is very practical.

55M1, as Konka's latest TV product, has given its own solution to the problem of serious homogenization in the market. The Konka 55M1 TV has a good appearance and exquisite workmanship. Thanks to the use of MEMC PRO and HDR technology on the screen, the overall brightness of the screen is high and the overall color uniformity is also very good.

In terms of audio, the HiFi Pro audio Konka 55M1 TV demonstrated excellent audio quality, and it was able to perform in both songs and movies. The easy-to-use aspect of Yipiao in the system is undoubtedly obvious. Even novices can get started quickly. Coupled with powerful video decoding capabilities, both 1080P and 4K content can be quickly and perfectly decoded and played. Of course, another major attraction of the Konka 55M1 is K song entertainment. For users who like to listen to music like the K song, the 55M1 is a good TV not to be missed.

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Today, security monitoring has become one of the most important components of our security work. From the high-definition front-end camera, to the more convenient network transmission monitoring, and to the more powerful storage and high-definition video display on the back-end, the increase in this investment alone has explained to us the importance of video surveillance in the entire security work. ***. However, high investment may not necessarily achieve ideal returns. For many users, although the front-end monitoring equipment is sufficiently advanced, there are more users who use their back-end display to make their equipment "fall In the last step "before.

In fact, the monitoring monitor's interference elimination is not a problem. There are many times when a small, simple process can make our monitor “full of blood”. Today, the author will teach you how to remove the most common interferences. Ways to make the monitor no longer suffer from interference.

The most common interference: wood grain interference

In our application, wood grain interference is probably one of our most common disturbances. Not only monitors, but also TV lines transmitted on some old-fashioned non-wired video signals have been harassed by these lines. In light conditions, it may affect our visual fatigue, but it may even affect our normal viewing. Therefore, this is often regarded as our number one interference situation.

In fact, there are many reasons for this week's disturbances, and the most common one is caused by flaws in video transmission cables. In the construction of the monitoring system, the cables are often the most easily overlooked part of the network, so it is also easy to cause uneven quality of the cables. When the quality of the copper wire inside the cable is not high, or the outer screen is too sparse, it will have a very significant impact on the video display of the terminal. This is mainly due to the different cable quality leads to the resistance of the entire line is too large, and ultimately affect the quality of the signal transmission. For the solution of this line interference, the use of cable replacement is probably the only way.

Maximum area interference: moire interference

However, due to similar causes of interference for many reasons, the determination of the failure is undoubtedly the most important task, and it is recommended that it be done by an experienced person to avoid unnecessary error overhead.

In fact, in addition to the line problem, wood grain interference is sometimes caused by strong current harassment near the transmission line. This is mainly due to the presence of superimposed interference of normal power supply during the transmission of the line, or caused by the thyristor equipment in its own power grid, and these will also have a great impact on the transmission of the line. Of course, the handling of this interference is obviously much easier than the above method, as long as we can use the clean power supply or online power supply in the entire system, we can pass this small line pattern out.

In addition, the pasغير مجاز مي باشدe of strong currents around the perimeter will also affect our circuits. For this problem, we will use enhanced shielding for the front-end equipment, or ground the video cable.

In addition to our most common wood-grained disturbances, there is another type of disturbance that occasionally affects our viewing vision, which is web-based interference. In our common interference phenomenon, the area of ​​influence of this interference can be regarded as one of the largest. However, although its coverage is relatively large, it does not seem to be "dominant" when it is solved.

For the emergence of such failures, it is generally due to the short circuit or the open circuit of the transmission cable core of the video cable and the surrounding protection network. Therefore, such problems often occur mostly in BNC connectors or other types of connector parts. When we solve a similar problem, we can easily troubleshoot this type of interference by checking the corresponding connectors one by one and replacing the problem devices.

The most neat disturbance: vertical bar interference

Although this type of interference may not be very common, its characteristics are quite obvious. The main reason for the formation of such interference is that the quality of the cable is not in line with the standard, which ultimately results in abnormal data properties in the transmission process.

Therefore, in solving this kind of interference situation, most of us will use "start series resistor" or "terminal parallel resistor" approach to solve. Of course, the best way to prevent this interference is when we purchase the line, we must carry out the necessary product testing, early detection of the problem, so as to avoid facing a rework mess after the project is over.

The above three types of interference basically cover one of the most common interference phenomena in video surveillance. From the above analysis, it is not difficult to find that the reason for the existence of an equivalent part is due to the equipment or construction defects. Therefore, this also reminds us that in reality, interference is not a big problem. It is only when we construct or purchase accessories that we need to conduct more and more rigorous testing on the equipment. We must grasp the quality of the product at the source so that we can't use it in the final application. Leave troubles that can be avoided.

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