【摘 要】
：
1 前言传感器的信号输出有模拟量,也有频率量,计算机只能接收数字量,因此中间必须有接口电路。对于模拟量,目前有大量的不同精度的A/D和V/F通用接口芯片,对于频率量,还很少
【机 构】
：
太行仪表厂测试仪器研究所,太行仪表厂测试仪器研究所,太行仪表厂测试仪器研究所,太行仪表厂测试仪器研究所
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1 前言传感器的信号输出有模拟量,也有频率量,计算机只能接收数字量,因此中间必须有接口电路。对于模拟量,目前有大量的不同精度的A/D和V/F通用接口芯片,对于频率量,还很少有专用F/D芯片,靠使用计数器(如Z80-CTC,8253,8254以及74LS161,74LS163,74LS393等)和自己设计的控制电路实现。我单位是智能仪器研究所,主要研制各种传感器和微机应用,由于在我们研究的各种传感器中,大量采用频率信号输出,如谐振筒式压力传感器(已获专利)
1 Introduction Sensor signal output analog, there are frequency, the computer can only receive digital, so there must be in the middle of the interface circuit. For analog, there are a large number of general-purpose A / D and V / F interface chips with different accuracies. There are few dedicated F / D chips for the frequency and counters (such as Z80-CTC, 8253, 8254 and 74LS161 , 74LS163, 74LS393, etc.) and their own design to achieve the control circuit. My unit is the Institute of Intelligent Instruments, mainly the development of a variety of sensors and computer applications, due to the variety of sensors we have studied, a large number of frequency signal output, such as resonant cylinder pressure sensor (patented)
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