露点仪自动检定系统的开发与设计

Development and design of the automatic verification system for dew point meters

摘要:

基于机器视觉原理和参数自整定的模糊PID控制理论,设计开发了一种新型的露点仪自动检定系统,解决了传统的露点仪检定系统数据量多、误差大、露点温度检定点难以控制、工作效率低等问题。该系统采用模糊PID调节器实现露点发生器露点温度固定点的自动控制,通过机器视觉装置实现了标准露点仪和被检露点仪的数据的自动采集和处理；同时开发了上位机数据处理与管理系统软件,实现人机交互和数据管理,自动采集与处理、自动存储及检定判定,自动生成原始记录和证书等功能。测试结果验证表明,该系统运行可靠,检定精度能够达到要求。该系统采用模块化设计,具备良好的灵活性、可靠性和可扩展性,可根据实际检定需求进行修改或扩展,大大提高了露点仪检定的精确性和工作效率。

Abstract:

Based on machine vision principle and Fuzzy PID control theory of parameter self tuning, a new automatic verification system of dew point meter is designed and developed, many problems of the traditional dew point meter have been solved, such as large amount of data, large error, difficulty in controlling dew point temperature, low efficiency and so on. The system uses fuzzy PID controller to realize dew point generator dew point temperature fixed point automatic control, and the automatic collection and processing of the data of standard dew point hygrometer and dew point hygrometer were realized by machine vision device; At the same time, the data processing and management system software of the host computer is developed, Human computer interaction and data management, automatic acquisition and processing, so automatic storage and verification, automatic generation of original records and certificates and other functions are realized in time. Test results verify that the system runs reliably and the calibration accuracy can meet the requirements of the procedure. The system uses modular design, with good flexibility, reliability and scalability, and it can be modified or extended according to the actual verification requirements, which greatly improves the accuracy and efficiency of the dew point meter calibration.