Acceleration sensor-based system and acceleration sensor-based method for monitoring vibration of circuit breaker
A technology of acceleration sensor and vibration monitoring system, which is applied to instruments, measuring devices, and measuring ultrasonic/sonic/infrasonic waves, etc. It can solve problems such as high requirements for signal conditioning circuits, serious temperature effects, and affecting measurement accuracy, so as to improve system reliability. performance, simplify circuit design, and improve measurement accuracy
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[0049] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0050] The present invention adopts a plurality of resonant wireless passive surface acoustic wave acceleration sensors to monitor the vibration signal of the circuit breaker, uses a reader to transmit a radio frequency signal to the sensor in a frequency scanning manner, and receives the echo signal fed back by the sensor, and calculates the value of the echo signal The acceleration value is obtained from the resonant frequency; the temperature sensor is used to measure the ambient temperature, and the temperature compensation is performed on the measured value of the acceleration sensor. At the same time, the vibration information and mechanical state of the circuit breaker are assisted by monitoring the opening and closing status of the circuit breaker. The schematic diagram of circuit breaker vibration monitoring syst...
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