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硅压阻测压器件具有体积小,频响高等特点,作者用它制作了水流脉动压力计,其感压面积仅1平方毫米,测量灵敏度高,有良好的动态特性及防水性能。 该压力计用于某水利工程的水力学模型试验中,获得了丰富的清、浑水流壁面脉动压力资料,经计算机数据处理,得到了表征水流脉动压力统计特性:幅值特性和频率特性,成果是令人满意的。
Silicon piezoresistive piezoresistive device with small size, high frequency response, the author used it to produce a pulsating flow pressure gauge, the pressure sensing area of only 1 square millimeter, high sensitivity, good dynamic properties and waterproof performance. The pressure gauge is used in the hydraulics model test of a water conservancy project to obtain rich fluctuating pressure data on the surface of clear and turbid water flow. The statistical characteristics of the fluctuating pressure of water flow are obtained through the computer data processing: the amplitude and frequency characteristics, Is satisfactory.