论文部分内容阅读
本文报导了一种针头式PT-1型集成压力换能器,其电路由应变电阻全桥和一只差分放大器组成,集成在1.8×1.8×0.2mm~3的<100>晶向硅片上,接上针头后可用于针刺测量血压或其它压力,也可接上导管供体外测压用,其输出可用电压表、示波器或记录仪等二次仪表显示。该换能器具有体积小、重量轻、灵敏度高(约1mV/mmHg)、线性好(优于0.5％)、滞后小(小于0.5％)、量程大(大于500mmHg)、后部电路简单和价格较低等优点。
This paper reports a needle-type PT-1 integrated pressure transducer whose circuit consists of a strain-resistor full-bridge and a differential amplifier integrated in a <100> silicon wafer of 1.8 × 1.8 × 0.2mm ~ 3 , Connected to the needle can be used to measure acupuncture blood pressure or other pressure, but also connected to the catheter for external manometry, the output can be voltmeter, oscilloscope or recorder secondary instrument display. The transducer has the advantages of small size, light weight, high sensitivity (about 1mV / mmHg), good linearity (better than 0.5%), small hysteresis (less than 0.5%), large measuring range (more than 500mmHg), simple circuit and price Lower advantages.