地源热泵中光纤光栅土壤温度监测系统研究  

Research on the Soil Temperature Monitoring System Based on Fiber Grating for Ground Source Heat Pump

作　　者：刘学君[1] 袁碧贤 卢浩[1,2] 吴艳元 钟少龙[4] 戴波[1] LIU Xuejun;YUAN Bixian;LU Hao;WU Yanyuan;ZH;DAI Bo(School of Information Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China;School of Information Science and Technology,Beijing University of Chemical Technology,Beijing 100029,China;Tian Pu New Energy Technology Co.,Ltd.,Beijing 102612,China;Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China)

机构地区：[1]北京石油化工学院信息工程学院,北京102617 [2]北京化工大学信息科学与技术学院,北京100029 [3]天普新能源科技有限公司,北京102612 [4]中国科学院上海微系统与信息技术研究所,上海200050

出　　处：《自动化仪表》2018年第8期52-55,共4页Process Automation Instrumentation

基　　金：北京市教委科技计划面上基金资助项目(15032221001/006);北京市教育委员会市属高校创新能力提升计划基金资助项目(2016014222000041);北京石油化工学院科技创新基金资助项目(15031862005/052);北京石油化工学院优秀青年教师和管理骨干培育计划基金资助项目(08031862008/040)

摘　　要：太阳能与地源热泵的联合供能系统急需解决土壤的热平衡问题,因此土壤温度的测量与分析尤为重要。基于光纤光栅传感技术,对土壤进行分布式测温。基于Mod Bus通信协议,进行数据收集与处理,并利用SIM900A进行GSM/GPRS无线模块远传。该系统实现了北京市某现场近一年的土壤温度精确采集和实时远传。试验分析表明,该地源热泵井周围地区土壤温度波动大致范围在8~25℃之间,夏季温度高于冬季温度10℃左右;随着土壤深入,两者温度相差越来越少。地表温度较地下120 m处,夏季温度降低5℃左右,冬季温度比较平稳。土壤温度随着季节和热泵的运行,存在热量不均衡的情况。该系统为进一步优化太阳能及地源热泵联合供能系统的设计提供了有力的数据支持。Soil heat balance is the issue to be solved urgently for the joint energy supply system of solar energy and ground source heat pump,the measurement and analysis of the soil temperature are particularly important. Based on fiber grating sensing technology,distributed temperature measurement of soil is conducted. The Modbus communication protocol is adopted for data collection and processing. The GSM/GPRS wireless remote transmission is implemented based on the SIM900 A. The system realizes the soil temperature accurate acquisition and real-time remote transmission in a certain field in Beijing nearly one year.The results of experimental analysis show that the soil temperature fluctuation around the ground source heat pump well is roughly in the range of 8 - 25 ℃,and the temperature in summer is 10 ℃ higher than the temperature in winter. Along with the deepening of the soil,the temperature difference between the two is becoming less and less. Comparing the temperature of ground surface and the temperature of 120 m underground,5 ℃ lower in the summer and stable in the winter. Soil temperature varies with seasons and heat pump operation. The system provides strong data support for further optimizing the design of the joint energy supply system based on solar energy and ground source heat pump.

关 键 词：光纤光栅 地源热泵 太阳能 土壤温度 MODBUS 热平衡 监测 

分 类 号：TH-39[机械工程] TP27[自动化与计算机技术—检测技术与自动化装置]