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Introduction Biological proximity sensor

2014-11-11 19:13  
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Here we introduce a proximity  sensor  creatures. Combine text plug will improve your understanding of efficiency. Figure 1 is a circuit needs assessment approach. Induced eddy current testing in a living being, whether animal or human. Five rounds of enameled (say 30s wg.) Wound interval detection occurs (4 mx 4 m in the test), and an audio signal of approximately? W is pulsed through this, Tx, coils. A smaller Rx coil (say 100 rpm 1930 wg 150 mm enameled wire wound diameter. Ago), is used as a sensor coil. The circuit through the optimization and adjustment of trim control VR1 and VR2, so this is disabled when a station back from the Rx coil. A simple clock generator (IC1a-IC1b) and power MOSFET (TR1) for the transmitter, and a 7555 timer (IC2) as a sine-squared converter receivers. Input of IC2 is biased by VR1, VR2 and R4. IC2 in turn switches with non Gates IC1c and IC1d, drive relay RLA. Capacitor C5 tw1o second relay switches on, its value may be increased or decreased to a different time period. D2 key to prevent the return e m f. From reinsurers trigger circuit. Power supply decoupling capacitors C1 and C4 is also essential, should be located close to, IC2 IC1 respectively. When a creature, animal or human, are in the tens of centimeters Rx coil, the circuit is triggered. Note that the points may affect the radio receiver coils in close proximity to Tx. A number of such coils can also be connected in series. The coil may have a greater or smaller diameter wound to transfer more or less, the transmitter power may be varied, and the sensitivity of the receiver.

 

Everything that moves alarm proximity detector for living creatures