基于RS232接口的温度传感器自动检定系统设计

针对目前省级气象计量实验室配备的测试设备大多具有RS232可编程接口,为了提高温度传感器的检定效率,研究了SR253型温控器、精密测温仪和常用的3种扫描采集器等设备的串口通信协议,在VB6.0开发平台下结合SQL Server 2000数据库编程实现了温度传感器的自动检定。试验结果表明:系统不仅性能可靠、操作方便,通用性较高,明显提高了检定效率,而且避免了手动检定时的人为影响因素,保证了检定数据可靠性。

Design of Automatic Verification System for Temperature Sensors Based on RS232 Interface

Currently,most testing equipments in the provincial-level meteorological metrological laboratories are equipped with the programmable interface of RS232.In order to improve the calibration efficiency of the temperature sensors,the serial communication protocol of such devices as SR253 thermostats,high-accuracy thermometers and three kinds of scanning collectors in common use and so on are discussed.An automatic calibration system for temperature sensors is designed in combination with the database of SQL Server 2000 based on the VB6.0 development platform.The experimental results show that the automatic verification system is reliable and easy to operate with high commonality,which improves the verification efficiency significantly,avoids the arbitrary factors which may be caused by manual testing,and is able to provide high-quality calibration.