Novel frequency correction type sound detecting system based on audio-frequency oscillating circuit
A technology of frequency correction and oscillation circuit, which is applied in measurement devices, processing response signals of detection, and material analysis using acoustic wave emission technology. It can solve problems such as inaccurate detection results, improve detection accuracy, avoid losses and improve stability. sexual effect
Inactive Publication Date: 2016-02-24
CHENGDU SIBOTE TECH CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the defect of inaccurate detection results of existing electronic instruments, and to provide a new type of frequency correction sound detection system based on audio oscillation circuit
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[0023] Such as figure 1 As shown, the frequency correction type new sound detection system based on the audio oscillation circuit of the present invention is mainly composed of a central processing unit, a frequency correction circuit, an audio oscillation circuit, an oscilloscope, and a memory connected to the central processing unit, and frequency correction It consists of a multi-stage operational amplifier circuit connected to the circuit, a sound sensor connected to the multi-stage operational amplifier circuit, and an alarm connected to the audio oscillator circuit.
[0024] Among them, the sound sensor is used to collect the weak sound signal emitted when the material is deformed and fractured and convert the sound signal into an electric signal to be sent to the multi-stage operational amplifier circuit. The RB-02S084 produced by Harbin Aosong Robot Technology Co., Ltd. is preferred. Type sound sensor. The multi-stage operational amplifier circuit is used to amplify the w...
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The invention discloses a novel frequency correction type sound detecting system based on an audio-frequency oscillating circuit. The system is characterized by mainly comprising a central processor, an accentuator, the audio-frequency oscillating circuit, an oscilloscope, a memorizer, a multistage operational amplifying circuit, a sound sensor and a warner, wherein the accentuator, the audio-frequency oscillating circuit, the oscilloscope and the memorizer are separately connected with the central processor, the multistage operational amplifying circuit is connected with the accentuator, the sound sensor is connected with the multistage operational amplifying circuit, and the warner is connected with the audio-frequency oscillating circuit. Through the adoption of the system, faint sound generated when a material deforms and breaks can be accurately detected, so that people can change the material in real time to avoid unnecessary loss. Meanwhile, through the arrangement of the accentuator, frequency correction on signals of which frequencies fluctuate in a transmission process can be realized, so that the stability of the system can be improved; as the arranged audio-frequency oscillating circuit can linearly drive the warner, an intermittent warning phenomenon of the warner is avoided.
Description
Technical field [0001] The invention relates to a sound detection system, in particular to a frequency correction type new sound detection system based on an audio oscillation circuit. Background technique [0002] Acoustic emission is a common physical phenomenon. The frequency range of acoustic emission signals of various materials is very wide, from infrasound frequency of a few Hz, audio frequency of 20Hz~20KHz to ultrasonic frequency of several MHz. The amplitude of the acoustic emission signal also varies widely, from a microscopic dislocation movement of 10 m to a seismic wave of the magnitude of 1 m. If the strain energy released by acoustic emission is large enough, it can produce audible sound. Acoustic emission occurs when most materials are deformed and fractured, but the acoustic emission signal strength of many materials is so weak that the human ear cannot hear it directly, and it can be detected with the help of electronic instruments. However, the detection res...
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IPC IPC(8): G01N29/14G01N29/44
CPCG01N29/14G01N29/44G01N29/4463
Inventor 钟黎
Owner CHENGDU SIBOTE TECH CO LTD