农用温控仪表测温误差及改进研究  

Measurement Error and Improvement of Agricultural Temperature-controlled Instrument

作　　者：张道辉[1] 刘庆忠[1] 宗晓娟[1] 沈广宁[1] 王甲威[1] 李勃[1] 

机构地区：[1]山东省果树研究所/山东省果树生物技术育种重点实验室,山东泰安271000

出　　处：《山东农业科学》2011年第2期95-98,共4页Shandong Agricultural Sciences

基　　金："十一五"国家支撑计划项目(2008BAD92B02);泰安市科技发展计划项目(20075014)

摘　　要：分析了农用温控仪的部分技术指标,对产生测温误差的原因及改进技术进行了研究。常年工作的农用温控仪表,无论测量气温、地温或局部微环境温度,由于选用不当和仪表工作环境温度的变化,都能造成大于5℃的叠加误差幅度,严重影响农产品的产量和质量。试验筛选出3种可抑制和减小测温误差幅度的使用方法,研制成功了可抑制测温误差的仪表改进电路,在实际生产中试用,均取得预期效果。Some technical indexes of the agricultural temperature-controlled instrument were analyzed and the reasons for the measurement errors were studied as well as the improvement techniques.The agricultural temperature-controlled instrument used perennially to measure the temperature of atmosphere,soil or local microenvironment could produce the error totally more than 5℃ because of the improper selection of the instruments or the changes of the working environment.It seriously affected the output and quality of the agricultural products.Three methods were screened to inhibit and reduce the measurement error and an improved instrument circuit was also designed successfully.All of these had been applied to the production and the expected effects were received.

关 键 词：农用仪表 技术指标 测温误差 改进及效果 

分 类 号：TH765.26[机械工程—仪器科学与技术]