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一、概述我校研制的新型的流量信号倍频器——LXB-I,是提高流量信号处理精度和分辨率的一种专用仪器。火箭发动机试车时的流量信号,其频率通常在40Hz～2KHz范围内,若直接加到微型机处理,计数时会带来±1Hz的误差,这对低频信号引起的相对误差是可观的。经LXB-I将流量信号频率提高10倍或100倍,便可相应提高测量精度10倍或100倍。本仪器也可用于一般的流量信号或转速测量,以提高分辨率及测量精度。
I. Overview Our school developed a new type of traffic signal frequency multiplier - LXB-I, is to improve the flow signal processing accuracy and resolution of a special instrument. Rocket engine test flow signal when the frequency is usually in the range of 40Hz ~ 2KHz, if added directly to the microcomputer processing, counting will bring ± 1Hz error, which caused by the relative frequency of low-frequency signals is considerable. By LXB-I flow signal frequency by 10 times or 100 times, you can increase the measurement accuracy of 10 times or 100 times. The instrument can also be used for general flow signal or speed measurement, to improve the resolution and measurement accuracy.