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超声波接收信号的峰值检波电路测试分析

更新时间:2020-10-27 21:59:57 大小:4M 上传用户:zhengdai查看TA发布的资源 标签:超声波接收信号峰值检波电路 下载积分:2分 评价赚积分 (如何评价?) 打赏 收藏 评论(1) 举报

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峰值检波技术是一种能跟随输入信号变化并能将峰值保持的电路,常用于电信号的采集。这些电信号反映了某些重要物理信息,所以有必要设计峰值检波电路,来对电信号进行采集以供后续处理。例如用超声波测量管内液面高度时,不同的液面高度对声波信号的衰减不同,就会出现不同高度对应不同幅值的回波信号,而这些信号的峰值通常都比较小。通过理论分析、电路设计以及实验测试,最终设计的峰值检波电路满足了测试要求,对传感器接收到的毫伏级回波信号峰值具有良好的检波输出,同时具有发射信号频率范围宽的特点,适用于超声波测量液面高度的电路设计。

Peak detection technology is a kind of circuit that can follow the change of input signal and keep the peak value.It is often used in the acquisition of electrical signals.These electrical signals reflect some important physical information,so it is necessary to design peak detection circuit to collect electrical signals for subsequent processing.For example,when measuring the liquid level height in a pipe by ultrasonic,the attenuation of acoustic signals varies with the liquid level height,and echo signals corresponding to different amplitudes will appear at different heights,and the peak values of these signals are usually relatively small.Through theoretical analysis,circuit design and experimental test,the final design of the peak detection circuit meets the test requirements,and there should be an order of magnitude for the millivolt signal received by the sensor.The peak value of echo signal of millivolt level or micro-negative level or nanovolt level has good demodulation output,and has the characteristics of wide frequency range of transmitting signal,which is suitable for the circuit design of ultrasonic measuring liquid level height.

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超声波接收信号的峰值检波电路测试分析.pdf 4M

全部评论(1)

  • 2023-05-29 16:15:50姚二少

    感谢,很有帮助

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