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介绍了一种用8098单片机处理不对向测量五孔压力探针信号的测试仪器,它可以直接用数码管显示所测空间流场的总压、静压、α角、β角、速度和各测孔压力值,由于采用了高精度的带温度补偿的压力传感器、前置放大器,提高了仪器的测量精度,该仪器输出有串口和并口,容易实现快速记录和与上位计算机通讯。 本仪器可通过圆柱三孔压力探针及速度管对空间气流的α角、总压、静压和速度进行测量,所以该仪器是一台多功能的测试仪。
A measuring instrument for measuring the pressure signals of five holes with non-countermeasure is introduced by using 8098 single-chip microcomputer. It can display the total pressure, static pressure, α angle, β angle, speed and each measurement Hole pressure value, due to the use of high-precision pressure sensor with temperature compensation, preamplifier to improve the measurement accuracy of the instrument, the instrument output serial and parallel port, easy to quickly record and communicate with the host computer. The instrument can measure the α, the total pressure, the static pressure and the velocity of the space airflow through the three-hole cylindrical pressure probe and the speed tube, so the instrument is a multifunctional tester.