the pressure parameters testing of airplane engine is based on zero dead time parallel acquisition technology to test the pressure signals which were tranfered from pressure sensor 航空发动机脉动压力的测试基于多通道无间隔并行采集技术,对压力传感器传送的脉动压力信号进行采集测试。
measured for pressure is based in zero dead time parallel acquisition technology . one board has been 4 channels . one channel has been 100ksps sampling rate and 20mv 10v input signal range ( 7 scopes selectable ) 对压力的测量基于多通道无间隔并行采集技术,单模板可实现4通道并行采集,每通道采样率100ksps,信号输入范围20mv10v(七挡可选择)。
objected to the character of modulation domain, this article mainly discuss the key technique such as analog interpolator which can improve the distinguish ratio and zero dead time counter which can prevent the loss of useful message during two sample gates 如:模拟内插技术,使之适应系统的整体指标的要求;无间歇计数技术,它不仅能保持两次测量之间的关系,而且还可以保证不会在两次取样之间丢失测量信息。