With the development of science and technology, there are many video surveillance and intelligent anti-theft alarm electronic products on the market, which provide favorable conditions for security and rapid detection. Due to the wide selection of human pyroelectricity, microwaves, and door sensors as the detectors, the alarm trigger signal is obtained from the unique characteristics of the small changes in their physical quantities, but some blind spots or dead spots, as well as changes in the external environment, there are Some limitations of the physical properties of the detector will give the alarm hidden dangers of false positives or false negatives.
Telephone alarm installation and use
House stealing and robbery can happen in any period and in any country, both ancient and modern, and it not only seriously endangers people’s property and life safety, but also is a social security problem that is difficult to completely solve. Although agencies and enterprises and institutions can send people on duty to install video surveillance and alarm emergency devices, it will play a defensive role, but some cases of theft and robbery will still occur. For the general public, there is also a certain awareness of prevention. For example, early security nets and anti-theft windows have certain security effects on homes, but they expose many hidden dangers in actual use, affecting city appearance, hindering fire escape, providing thieves with favorable conditions for climbing and stealing neighbors, and rust falling and wounding. Civil disputes and so on.
In order to quickly open up the market quickly, manufacturers of alarms design bulky mounted detectors to facilitate installation by the user. This provides thieves with conditions to destroy targets or counter-alarm operations, leaving a gap between The space for committing crimes seems to be guarded. It is virtually empty. Therefore, we must not only summarize the current problems in the security alarm market, but also study the social structure of people in highly advanced economic and technological periods. When the Gini coefficient of the gap between rich and poor exceeds the internationally recognized safety line, due to the psychology of some people Imbalance, the increase of the floating population, along with the excuse forced by life, some people treat the theft and robbery as a candid profession, and return to the old business after they are released from prison - gang partners and commit crimes frequently. In people’s normal lives, although the number of thieves who steal or rob are very small, the number of people who are robbed and robbed is also a minority, but the resulting consequences have caused serious harm to society. Therefore, precautions should be taken to attach importance to the installation and use of surveillance and security telephone alarms.
At present, wireless smart alarms sold at the national and secondary markets have high performance, wide monitoring, and high intelligence, but they have high prices and are exposed. They not only have poor anti-alarm and anti-destructive capabilities, but also have operations. Cumbersome and inconvenient. Many wireless smart alarms belong to fixed transmission and reception frequencies, fixed size, and fixed operating modes. In view of the above situation, in conjunction with the problems that have arisen in the actual use of the author for several years, here are some of the superficial views of individuals:
1, after the decoration of the house, gives people a feeling of comfort and beauty, make people feel comfortable living. If you decorate a beautifully decorated door and window, an anti-theft anti-theft launcher with a non-modern decoration will definitely affect the decorative effect of the entire house. At the same time, anti-theft transmitters mounted on doors and windows may be subject to human intervention or may be deterred from counter-alarm action.
2, belonging to high-frequency emission of electronic products, installed in the living room and bedroom, easily affected by the interference of large appliances magnetic field, thus affecting the alarm effect.
3. Some wireless smart alarms use human pyroelectric infrared or microwave sensors. They can set up dozens of defense zones and dozens of alarm calls. They have a high degree of intelligence and are networked with the community for system management. Although these products are highly intelligent, it is undeniable that their performance is flawed or even inadequate. Pyroelectric sensors may generate false alarms for the nearby high-heat, intense light and hot air currents. When the relative temperature of the environment is close to the human body temperature, missed reports may occur, and the glass and plates are less sensitive to moving human bodies. At the end of the last century, the Northern Song Dynasty cultural relics of the Kaifeng Museum were stolen and occurred in the monitoring range of human pyroelectric infrared burglar alarms. Microwave detectors use the Doppler frequency shift feature to monitor moving objects in the defense area. When someone enters the defense area, they will immediately report an alarm, but animals in the defense area and shaking plants may cause false alarms. Microwaves have a penetrating effect on walls and floors. If they are improperly installed, neighbors' activities may also cause false alarms. As long as any false alarm or false report of any smart alarm device will affect the credibility of consumers, it will reduce the sense of security.
4. It is relatively safe to use a door sensor as a detector. No missed report or false alarm can occur because its alarm signal is generated after the doors and windows are pushed by the external force of the crime. No committing action will not generate an alarm trigger signal, but it has a large volume and is a surface-mounted device, and it is vulnerable to hidden damage or anti-alarm action. If acquaintances commit crimes, such things are more likely to happen.
5. The alarm device with double-detection function is now on the market, and the human pyroelectric infrared detection and microwave detection are in the same group of detectors. The use of microwaves is not blocked and the performance of smoke, light, and temperature change is insensitive. This supplements the inadequacy of human pyroelectric infrared detectors, and basically eliminates false alarms through the composite detection of both units. However, this may be missed, because the human body's infrared radiation is easily blocked by walls, furniture, plates, glass, and so on. Shuangjian detector can trigger an alarm only if both units detect the invading human body at the same time. If a rogue with anti-alarm experience is encountered, it enters the zone under the cover of the glass and the plate, then the double-sense detection is difficult to trigger the alarm only with the single-sense function. Under the effect of the anti-alarm, will it not be “with the police not reporting”?
6, because the current video surveillance and security alarm electronic product detectors are almost all body-mounted equipment, in the installation process and form is not only unavoidable to the perpetrators provide damage to the target, but also to the thieves to create anti-alarm conditions . When the manufacturer researches and develops intelligent products without any false alarms, it may think that the detectors are in the room. If the damage is not successful, they will be recorded or triggered, ignoring the diversity of crimes. - Open space-time, step-by-step committing crimes, using science and technology devices to commit crimes, perforating magnets to commit crimes, committing anti-alarms, using blind corners to commit crimes, etc. In order to eliminate the blind spot that has never been involved in the security and alarm industry, the home phone alarm detector can only be reduced in size and completely concealed, leaving the perpetrators with a destructive goal and creating anti-alarm conditions.
7. Smart alarms have difficult operation problems. Among low- and middle-income people, young people with thin hands may not use it. Some middle-aged and elderly people with anti-theft and anti-robbery awareness, and some even the DVD remote control key functions and how to program are not clear, the smart anti-theft alarm code recording, programming, fortification, disarming and after the occurrence of alarm quickly Dealing with, may only look "instrument" sigh!
The blind spots and dead ends described in this article are only problems with home-telephone alarms. They do not involve crowded places, common areas and shared parts of owners. Highly intelligent large security alarm products are applicable to the public space and common parts of personnel offices, enterprises, and residential communities with property services. From the cage of the video surveillance, we can understand the suspicious conditions in the deployment area. Not waiting for a crime can be used to warn the thief. If the accidental alarm triggered by some accidental interpersonal activities can also be quickly and accurately judged from the cage of the video surveillance, to avoid wasting public security resources. It is the most intuitive and effective security facility for shopping, working, and living crowds. It is also the most ideal first line of defense for residential communities.
Home phone alarms against vandalism
For home security, there are many high-rise buildings in the district. There are many households in the same unit. Each room is only adjacent to the floor or the adjacent room. The space outside the front and front windows is in daily life. Neighbors' activities will naturally cross and involve each other. It is not advisable to monitor or arm the door outside the front window. If major security products are rejected by the culprit, the security alarm installed in the home may cause civil disputes. In the development of property management service security personnel in our residential community for about 20 years, although the crackdown on the department and the civil air defense and technical defense measures have been increasing year by year, there are still omissions or inconsistencies in the technicalization and anti-prevention of committing crimes. With regard to practical problems, cases of burglary and burglary in the country each year are still on the rise. No one dares to guarantee that in the future he will never experience an accident that has been stolen or robbed. Family anti-theft, anti-robberies and enterprises and institutions, supermarkets or residential communities around the prevention conditions vary greatly, the latter have on duty personnel, can be monitored from the cage - surface, perimeter patrols to determine false positives, handle the police situation; the former use the alarm The device is deployed and unattended at home. If a missed report occurs, the thieves commit the crime. If a false alarm occurs, it is very difficult for the owner to identify the true alarm in the home and rush into the guard, security guard or 110, which may be interpreted as history. The farce of the bonfire opera princes has really occurred afterwards. Help the guards, the security guards or the neighbors to fail. After the thieves enter the unit, community or village, the ultimate goal of the crime is a single family or individual. The security telephone alarm at home is also fortified under unattended conditions. It is not only necessary, but also ensures that there are no false positives. Anti-anti-alarm and vandal-proof functions can only be set within the scope of the home. Otherwise, it will cause false alarms or troubles caused by the activities of the owners of the common parts.
After more than two decades of development, the security alarm industry in China, especially after 2000, has a high degree of intelligence and involves a wide range of products. Not only are there many mature technologies and stable brands, but also products that guarantee zero false positives, These major security products contribute a lot to the public safety in various fields of the country. However, the security products have been expanding their market share to home burglar alarms for the past 10 years. The biggest difference between public security and home security is that there are unattended problems. The detectors and triggers of the large security model production are exposed. In an unattended home burglar alarm, the anti-alert case was given to indicate the target of destruction. Thieves can enter the windows, doors or rooms with telephone alarms to commit crimes. Some police officers do not report. The vast majority are not caused by missing reports. Instead, the thieves use anti-alarm measures to commit crimes.
Using door magnets as the door and window of the telephone alarm trigger, the intruder can easily make a hole in the glass or wooden door in a short time, and then push the door and window open, the trigger circuit still maintains the original state of defense, and the telephone alarm can not be triggered. The police situation. With the human body pyroelectric infrared detector fortified room, thieves can use glass, plates and other objects to block the body's infrared radiation, enter the defense area to complete the anti-alarm crime. With the development of science and technology, crime is also intelligent and complicated. When the dual-purpose function, glass crushing, displacement, vibration, etc. are used as alarm detectors, the limitations of its own physical performance can also directly or indirectly perform anti-alarm. The direct cause of the phone alarm not being able to accurately and quickly report the alarm is to install the detectors and triggers in the clear place, because they do not covertly send anti-alarms. Telephone alarms do not report alarms when committing crimes, which affects the credibility of home-telephone alarms. The manufacturer of the alarm did not take into account the hidden dangers of the installation of the home-telephone alarm indoor detectors. The security industry and related periodicals and magazines rarely discussed this issue. In addition to the dead zones and blind spots already mentioned above, the telephone alarms were also long-term. There are performance gaps that do not fit unattended. In the real home security, regardless of the city or the countryside, there are a few households that use the security phone alarm fortification. Most families still choose to have many hidden security nets and anti-theft guardrails. This is the reason why home telephone alarms are difficult to promote to most households. It is also a social and technical background to eliminate dead zones and dead ends, fill gaps, and develop and improve home phone alarms.
To solve the problem of home phone alarms against vandalism, anti-counterfeiting alarms and leak alarms, the circuit should be designed in accordance with the law on the concept of crimes, used as a trigger for the case's actions, without the need for cumbersome computer operations and the possibility of crash-free computer chips. The software does not use a cryptographic circuit that is easily deterrable by the perpetrator, does not use a magnetic card circuit that can easily be copied, does not use a remote control circuit that is susceptible to an anti-alarm, and does not use a detector whose physical performance is easily affected by environmental factors. The magnetic controller hardware is used as triggers and programmers that have been proven through decades of practical tests to prove that the service life is long, that the factory standards take more than 10,000 jumps, that there are no leakage errors, and that the volume is small and the physical properties are stable. The power supply and transmission lines are concealed, and the host and supporting devices are all installed in the concealed space or mezzanine reserved when decorating the house. It is necessary to ensure that the entire unit can be smoothly put in and removed. It is conducive to overhaul and there are no traces on the exterior. Alarm reference and destruction target.
The home telephone alarm designed according to the above ideas has been installed in my home for five years. During the five-year time course, it has been verified. There have been no missing reports and false positives. There was no home at any time for more than 40 days. The security device Being able to guard yourself, no trouble occurred. During the five-year period, some friends who had come to visit home had watched home security alarm demonstrations on many occasions, but so far they have not found any device that triggers a telephone alarm because the host and sensor detection components are all concealed. There are no traces of suspicion. Only the outdoor alarm lights flash when the phone alarm is seen. The indoor lamps and lanterns are bright, the megaphone shouts the alarm, the telephone calls the alarm, and the called party can not only listen to the phone after picking up the phone. Footsteps to the room and the sound of goods, but also from the auto-opening tape recorders to talk with the people who visit the show. If the theft occurs, the owner can use the radio to announce the thief to stop the crime, leave the scene, or call the guard to handle the alarm. If you are robbed into the room or upgraded to robbery after being detected by the owner, you can use the covert emergency button to call the guard or 110. The expansion of household appliances into joint alarms did not increase investment in security, nor would it increase the غير مجاز مي باشدt of decoration and decoration. It not only created shocking power for the perpetrators in many aspects, but also deepened the sense of panic and guilty conscience, making the security alarms more effective.
The primary issues of home security are theft prevention, looting, fire prevention, and gas leak prevention. As the terminal market for security and alarm commodities, it should be tens of thousands of households in urban and rural areas. These groups may account for 80% of the social structure and have a great market potential. Big. The manufacturers of the security and alarm industry should see the needs and barriers of thousands of households, improve the installation performance, eliminate the hidden dangers of home-telephone alarm detectors, and increase the credibility of people's security telephone alarms. R&D and production have stable physical properties and small volume. According to the characteristics of unattended home burglar alarms, they can conceal concealed detectors and triggers. The existing technical capabilities are not impossible but unexpected. Modern buildings are not past beam brackets or carved cages-dongs. There is no room for a gentleman to hide from the beam. They can only enter the reinforced concrete room through doors and windows to commit crimes. Home security, doors and windows is the key, if the alarm detector, trigger performance is stable, concealed concealed, in the absence of a set target, it is impossible to destroy or carry out anti-alarm crime. Changing the model-finished detection triggers into concealed devices will adversely affect the manufacturer’s product sales for a certain period of time. It is not that customers can buy them from the market and install them on their own. Professionals need special tools to complete this task. jobs. From the manufacturer to the customer, an intermediate professional installation link has been added. This link seems to be redundant, but it actually solves the problem of alarm detectors against vandalism and counter-alarm. Home phone alarm device can become the mainstream of home security in the future? Is there really a great market potential!
Some people may not agree with this view. For example, in the early years of the 80s of the last century, most people just needed the housing needed for their family life. They were dispensable for the decoration of the house at that time, and they reportedly took a disapproval attitude. The vast majority of people have developed to today, the vast majority The buyers must be able to decorate the house before they can stay. This is the demand of the times! With the increase in people’s material wealth and the rapid increase in the level of social civilization, people are more resentful and fearful of the thefts and robbery that seriously threaten the social harmony and stability. The new and old buyers and some homeowners who re-decorate their homes share the same mood. In the decoration of gorgeous and comfortable and happy families, the security awareness not only becomes a necessary requirement, but also changes in ideology. Amazingly, it is not only original and backward, but also hidden in a fenced-in anti-theft device requiring housing decoration. Synchronized with home security devices, concealed concealed installations are coordinated with house decoration and decoration, which not only saves غير مجاز مي باشدts, but also avoids the effect of house decoration due to the exposure of security components or components.
Ensure that the home phone alarms are protected from vandalism and anti-counter alarms, and that they can accurately report warnings when they are stolen. When emergencies occur, people are automatically sent out for help when they are not aware of the presence. With the pasغير مجاز مي باشدe of time, the reliability of telephone alarms has increased among thousands of households, and the original security nets and fences have been naturally eliminated. At that time, the demand of thousands of households is the market prospect of the security alarm industry.
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