中国舰船研究2012，Vol.7Issue(2)：108-111,4.DOI:10.3969/j.issn.1673-3185.2012.02.020
用于模拟铂电阻温度传感器的可编程精密合成电阻
Programmable Precision Synthetic Resistance for the Simulation of Platinum Resistance Temperature Sensor
宋琦 1曹晨 2孙建华1
作者信息
- 1. 武汉第二船舶设计研究所,湖北武汉430064
- 2. 中国舰船研究设计中心,湖北武汉430064
- 折叠
摘要
Abstract
In ship power plant control system, platinum resistance temperature sensors are used to collect a large number of temperature signals and convert them into resistance signals. During debugging and test of these devices, resistor is used to simulate platinum resistance temperature sensor to give the required resistance signal. We introduced a new programmable precision synthetic resistance as substitute for the traditional resistance box. The synthetic resistance used operational amplifiers and D/A converter to constitute one port network, controlled by programming the ratio of input voltage and input current, so as to achieve the desired resistance value. This paper gives a detailed analysis of causes of error in the circuit, and presents a specific circuit with ICL7560 and AD5543 as the core device, and maintains output resistance errors within 0.02 ft and corresponding temperature signals below 0.05℃. The synthetic resistance has the advantages of small size, high precision and programmable feature, and that is the important device required for the test of temperature measurement sensor.关键词
精密合成电阻/可编程电阻/铂电阻温度传感器Key words
precision synthetic resistance/ programmable resistance/ platinum resistance temperature sensor分类
交通工程引用本文复制引用
宋琦,曹晨,孙建华..用于模拟铂电阻温度传感器的可编程精密合成电阻[J].中国舰船研究,2012,7(2):108-111,4.
