分布式热电偶温度采集系统设计  

Design of distributed thermocouple temperature acquisition system

作　　者：李洋 刘振革 王仁辉 马荣泽 郭兴 纪少波[1] 于泽庭[1] LI Yang;LIU Zhen′ge;WANG Renhui;MA Rongze;GUO Xing;JI Shaobo;YU Zeting(School of Energy and Power Engineering, Shandong University, Jinan 250061, China;Shandong Technician Institute, Jinan 250200, China;Longkou Longbeng Diesel Injection Technology Equipment Co. , Ltd. , Longkou 265701, China)

机构地区：[1]山东大学能源与动力工程学院,山东济南250061 [2]山东技师学院,山东济南250200 [3]龙口龙泵柴油喷射高科有限公司,山东龙口265701

出　　处：《内燃机与动力装置》2020年第2期12-17,共6页Internal Combustion Engine & Powerplant

基　　金：国家重点研发计划(面向重型载货车用燃料电池发动机集成与控制)。

摘　　要：基于MC9S08DZ60单片机、K型热电偶和MAX31855冷端补偿热电偶至数字输出转换器设计分布式热电偶温度采集系统,实现多路热电偶温度的数据采集及处理。采集系统的分辨率为0.5℃,可进行热电偶的开路及短接等故障检测,具有较高的检测速度和精度。测试试验结果表明,设计的热电偶温度采集系统能够实现温度的实时检测,具有良好的稳定性,可满足实际应用的要求。A distributed thermocouple temperature acquisition system based on MC9S08DZ60 micro controller,K thermocouple and MAX31855 cold-end compensation thermocouple to digital output converter is designed,by which the temperature data acquisition and processing of multichannel thermocouple could by achieved.The resolution of the acquisition system can reach 0.5℃and the fault detection of open circuit and short circuit of thermocouple can be realized,with high detection speed and accuracy.The test results show that real-time temperature detection could be carried out by this thermocouple temperature acquisition system stably.

关 键 词：热电偶 温度采集 模拟信号 故障检测 

分 类 号：TK311[动力工程及工程热物理—热能工程]