Pathfinder is one of the blind LM567 KD56022


Posted on Mar 28, 2007

Blind when they go out to bring a total crutches to Pathfinder to avoid obstacles. Due to hand battle not be too long, the detection distance is very limited. Using ultrasonic


Pathfinder is one of the blind LM567 KD56022
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principle to form a miniature detector, installed in the hand battle, not only can improve the detection efficiency and detection range, and easy to use. As shown for the ultrasonic detectors blind Pathfinder device, its circuit as shown in FIG. The circuit is an ultrasonic transmitter, an ultrasonic receiver and signal voltage amplifier, ultrasonic sound detection circuit and warning circuit.




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