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sensor ultrasonic motion detector

sensor ultrasonic motion detector

Electronic Circuit Ultrasonic motion detector using LM1458 – LM555

motion detector

motion detector

Electronic Circuit Ultrasonic motion detector using LM1458 – LM555 has several advantages and disadvantages. The main advantage is that they are very sensitive and very fast acting. However, the biggest problem with the type of motion detectors is that sometimes respond to normal environmental vibration that can be caused by a passing car or a plane flying over head. Several types of motion detectors use infrared sensors to avoid this problem, but even this detector has some problems.

Clectronic circuit infrared motion detector is a sensor that contains an infrared sensitive phototransistor placed in the area to be protected. Circuit in sensor detects infrared radiation emitted by the intruder’s body and trigger an alarm. The problem with using this type of detector is that it can be triggered by the movement of warm air or other disorders that can change the level of infrared radiation in a region. To prevent this problem, the new system uses two infrared sensors that monitor different zones within protected areas. The logic of the system triggers an alarm only when the two zones sequentially activated, as would happen if someone walked through the protected area.