作者：李明豫, 郑永明, 郑美扬

作者单位：1. 贵州省遵义市产品质量检验检测院, 贵州 遵义 563000;
2. 中国测试技术研究院, 四川 成都 610021;
3. 成都理工大学, 四川 成都 610059

关键词：积分非线性; 直线拟合; 分段查询

摘要：

针对剂量仪硬件电路积分非线性这一普遍现象,提出了一种软件的方法解决硬件电路的非线性问题。该方法通过标准分段查询,即建立约定真值与示值之间的对应数据表,再经过逆运算就可以得到测量值。通过实验验证,该方法是准确、快速的,可以广泛应用于二次仪表开发过程中的线性修正,用软办法解决电路的硬伤。

Fast way for solving integral nonlinearity of dose meter by software

LI Ming-yu, ZHENG Yong-ming, ZHENG Mei-yang

1. Zunyi Institute of the Inspection and Supervision of the Quality of Manufactured Products, Zunyi 563000, China;
2. National Institute of Measurement and Testing Technology, Chengdu 610021, China;
3. Chengdu University of Technology, Chengdu 610059, China

Abstract: Nonlinear integration of electric circuit is often found for dose monitor hardware. In this paper, a method based on software, in which Standard segmentation-Query is adopted, was established to address this problem. In this method, corresponding data sheet of promissory truth-value and indicating value was set up and the measured value could be obtained by inverse operation. Experiment tests proved that the method was correct and fast, and it could be used in the linear correction for the second development of instruments. This is the "tempered way" to solve the "hard wound".

Keywords: Integral nonlinearity; Fitting a straight line; Sectionalized inquiring

2010, 36(2): 74-76  收稿日期: 2009-10-13;收到修改稿日期: 2009-12-27

基金项目: 

作者简介: 李明豫(1981-),男,贵州遵义市人,助理工程师,主要从事放射医疗设备检定工作。

参考文献

[1] JJG 40-2001, X射线探伤机检定规程[S]. 北京:中国计量出版社,北京,2001.
[2] 杨 勇. 医用诊断X射线剂量探测技术概述[J]. 中国测试技术,2005,31(4):92-94.
[3] 徐建一,张友德,戴黎明,等. TQ-2000型多通道剂量仪[J]. 中国测试技术,2005,31(6):136-138.
[4] 李现勇. Visual C++串口通信技术与工程实践[M]. 北京:人民邮电出版社,2002.
[5] 胡逸民. 肿瘤放射物理学[M]. 北京:原子能出版社,1999.