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为创伤弹道学研究设计开发了外径6mm,量程20MPa,频响400kHz的可植入生物体内工作的压阻式微型高频高压传感器,背面感压的2mm直径的圆平膜弹性元件设计是最佳选择。激波管动态试验表明传感器的固有频率大于400kHz,上升时间小于1μs。在实验动物猪上,与进口压电传感器同步植入,实弹试验表明,新开发的这种传感器有更陡的脉冲前沿和更高的力学灵敏度。
For the traumatic ballistics research, a piezoresistive miniature high frequency and high pressure sensor working in an implantable organism with an outer diameter of 6mm, a range of 20MPa and a frequency response of 400kHz was designed and developed, and the 2mm diameter circular flat membrane elastic element with back pressure is designed Good choice. Shock tube dynamic tests show that the sensor’s natural frequency is greater than 400kHz and the rise time is less than 1μs. In experimental animals, pigs were implanted simultaneously with imported piezosensors, and live tests showed that the newly developed sensor had steeper pulse front and higher mechanical sensitivity.