【摘要】 应用计算机进行实时测量,将待测频率信号视作模拟信号读入计算机内存,然后根据计算机指令执行的周期、采样点数以及脉冲幅值的变化特点,计算出频率信号的周期.运用这种方法对涡轮流量计输出的信号进行测量,由输出信号计算出对应的流量.这种方法不需要较繁的硬件电路转换,大大改善了涡轮流量计的测量性能.更多还原

【Abstract】 A real time measurement of frequency signal was made on computer. The frequency signal was considered as analogue voltage signals and stored in the data memory of computer. The peroid and the frequency of the signal were calculated, based on the instruction cycle of the computer, numbers of samples and change features of frequency signals. The flow rate of a hydraulic pump was calculated with the frequency signals from the turbine meter. This method did not require complex hardware circuits to convert signals. The measuring accuracy of the frequency signal was improved.更多还原