Passive Sensor PA-4810A

Passive sensor for wall and corner mounting using fuzzy theory.

■Adoption of Fuzzy Theory The two outputs from the newly developed dual twin element are divided into two pieces of information: the temperature difference and shape difference between the detection object and the background, which are detected by the CPU. Using fuzzy theory, it accurately determines whether the detection object is a human or a small animal and outputs an alarm. Even if phenomena that are likely to cause malfunctions, such as small animals (like mice), stray light, drafts, and external noise occur, the dual twin effect ensures that there is almost no impact. ■Ideal Surveillance Area A multi-parabolic mirror utilizing unique optical technology is adopted. It monitors three-dimensional space with high density. ■Abnormal Alarm Function While the sensor is in a surveillance state, the built-in program allows the sensor itself to monitor the next functions. If an abnormality is detected, it notifies the user through continuous alarm output and the continuous illumination of the alarm indicator light. ●Low Power Voltage Abnormality… The newly developed CPU constantly monitors the power voltage supplied to the sensor. If the power voltage drops below a certain level, an abnormal alarm is triggered. ●Device Abnormality… In the unlikely event that there is damage or disconnection in the internal circuits or connections of the sensor, an abnormal alarm will also be triggered. ●Aiming Position Abnormality… After confirming the surveillance area, if the aiming device is forgotten to be returned, an abnormal alarm will be triggered.

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