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本文叙述的水下爆炸压电式测压仪,所用的传感器是压电晶体,被测信号由压电晶体转换成电荷量的变化,送入小型化视频高阻放大器,这样放大器的输出电压就正比于前沿很徙,后沿近似以指数形式衰减的冲击波的压力信号,这个电压信号可以用记录设备来观察和拍照。在测试过程中,为了校验放大器及传感器的阻抗和性能的变化情况,而设置了自校装置。另外因电缆转接又设置了转换器。本文将重点介绍测压仪中的小型视频高阻放大器及控制器。
This article describes the underwater explosive piezoelectric manometer, the sensor used is a piezoelectric crystal, the measured signal from the piezoelectric crystal into a charge change, into the miniaturized video high-impedance amplifier, so that the amplifier’s output voltage Directly proportional to the forefront of resettlement, the back porch approximates an exponentially decaying shock wave pressure signal that can be viewed and photographed with a recording device. In the test process, in order to verify the amplifier and sensor impedance and performance changes, and set up a self-school device. In addition, because of cable transfer and set up a converter. This article will highlight the small video high-impedance amplifier and controller in the load cell.