Motion Detector Sensor Alarm Circuit

Vehicular Motion Sensor: Developing a Wide-Range Motion Sensing Alarm System

Ir Sensor Circuit Using Op Amp

IR sensor circuit is used to detect the presence of IR signals from electronic device. Here an operational amplifier (op-amp) of LM 339 is used as comparator circuit. An electronic detector is cooled to low temperatures using liquid helium. Here we build touch sensors, speaker circuits, microphone circuits, and much, more. Visit here if How to Build a Night Light Circuit with an LM741 Op Amp Ho...

Design and Development of an Ultrasonic Motion Detector

The ultrasonic motion detector devices emit ultrasonic sound energy into an area of interest (monitored area), and this further reacts to a change in the reflected energy pattern. The system uses a technique that is based on a frequency shift in reflected energy to detect a movement or change in position (motion). In this system, ultrasonic sound is transmitted from the transmitting device whic...

Robust motion detector for video surveillance applications

1 This paper presents a robust motion-detector video sensor. It is intended to operate in surveillance applications for long periods of time with time-varying noise level. It makes use of the fact that whenever there is no motion a similarity measure between frames tends to have similar values.

A Low-Power Analog VLSI Visual Collision Detector

We have designed and tested a single-chip analog VLSI sensor that detects imminent collisions by measuring radially expansive optic flow. The design of the chip is based on a model proposed to explain leg-extension behavior in flies during landing approaches. A new elementary motion detector (EMD) circuit was developed to measure optic flow. This EMD circuit models the bandpass nature of large ...