False positives, false negatives in the alarm system has the following main reasons. Wireless detector anti-interference to co-channel interference may cause false positives, fail. Infrared detectors on false positives false negatives caused by intrusion of judgment is not accurate enough. Infrared detector vulnerability to temperature, light and other environmental factors to produce false positives. Wireless detector power supply shortage of power, low power to transmit information without making the detection range of the detector is shorter or does not work and fail to report false positives. Since the host and wireless encoding settings code for detector is caused by duplicate host and detector weight code lead to false positives.
We analyze infrared detection alarm those reasons will cause false positives, fail. False positives, false negatives in the alarm system has the following main reasons. Anti-jamming ability of wireless detectors for co-channel interference would cause false positives, fail. Infrared detectors on false positives, false negatives caused by intrusion of judgment is not accurate enough. Since the host and detectors are based on wireless encoding settings caused by encoding duplicate host and detector weight code lead to false positives. Also some alarm of quality too poor as components of damaged and production process bad caused errors reported, also has with select of equipment, and installation of way, and angle, and location, and also about, like selection of detector is vibration detector installation in source compared big and more of place (as airport, and railway next,) due to aircraft, and train run Shi source most will produced errors reported, as bat often appeared of place selection ultrasonic detector on easy caused errors reported, in by environment of effect Xia as air flow, and pet action,, There are human factors user's improper operation, accidentally triggered alarm, inadvertently, strayed into the already fortified zone will produce false positives. Generate false positives, false negatives are many and complex. So to reduce the burglar alarm false alarm, omitted the most important from a wide range of factors into consideration, such as technology and performance options probes, including the choice of sensor, the Fresnel lens design, microprocessor programs, technology, automatic code rolling code technology, production processes, methods of use, temperature compensation, sensitivity adjustment of the detection range. All of these factors determines the performance of the detector and false alarm rate.