Intelligent sensor

Abstract

The present invention discloses an intelligent sensor, comprising a piezoelectric sensor, a processing circuit, and a microcontroller circuit, wherein the piezoelectric sensor converts the vibration signals into the charge signals to input the processing circuit; the processing circuit receives the charge signals output by the piezoelectric sensor to output the charge signals after being processed. The present invention is characterized in that an analog output and digital conversion control circuit are connected between the output end of the processing circuit and the analog quantity input end of the microcontroller circuit, when needing to output the analog signals, the analog signals are output by the analog output and digital conversion control circuit; when needing to out the digital signals, the analog signals are input the microcontroller circuit by the analog output and digital conversion control circuit, and then the digital signals are output by the microcontroller circuit. The present invention has the intellectualized function of the filtering and the required signal output according to the requirements, and can realize flexibly multipoint intelligence parallel monitor.

Description

technical field [0001] The invention relates to sensor technology, in particular to an intelligent sensor realized by single-chip microcomputer technology and having both analog signal output and digital signal output. Background technique [0002] In industrial control and monitoring systems, more and more sensors are used. Due to the high internal impedance of the existing piezoelectric sensor itself, it is difficult for the piezoelectric device to use a general amplifier directly, and a pre-impedance must be performed. At the same time, due to factors such as burrs generated by bearing processing, sensor installation and environmental interference, certain high-frequency interference will be superimposed on the sensor output signal, and the original signal will be mixed with various Different forms of noise will affect the measurement accuracy. At the same time, the existing sensor output signal is single, usually only in analog or digital output, which brings a lot of in...

AI Technical Summary

Problems solved by technology

[0002] In industrial control and monitoring systems, more and more sensors are used. Due to the high internal impedance of the existing piezoelectric sensor itself, it is difficult for the piezoelectric device to use a general amplifier directly, and a pre-impedance must be performed. At the same time, due to factors such as burrs generated by bearing processing, sensor installation and environmental interference, certain high-frequency interference will be superimposed on the sensor output signal, and the original signal will be mixed with various Different forms of noise will affect the measurement accuracy. At the same time, the existing sensor output signal is single, usually only in analog or digital output, which brings a lot of inconvenience to industrial applications.

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