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目前国内外墙地砖辊道窑炉的温度监测装置大多采用单片机组成的系统,常用MCS-51单片机加上一定的信号转换电路、A/D转换电路和热电偶,根据现场需要只能用LED显示器显示.对热电偶的参比端补偿及非线性校正方法是热电偶参比端迁移,根据迁移温度t’,由分度表查出补偿值e(t’,0),并由软件进行补偿运算,得出参比端补偿后的热电势e(t,0),再查预先存入计算机中的分度表,用线性插值法得出相应温度t.这样的系统其特点是不能用曲线或图形直观显示被监测量,分度表的转换及存储过程复杂,且内存量大.对于存在多种分度号的相应系统来说更是如此.本文研制的辊道窑炉温度检测系统采用PC总线工控机及其接口板,其特点是工作环境温度在0～60℃.全钢结构机箱、各种插板均用加固压条固定,能够随时抵抗工业现场中的电磁干扰、电网尖峰或浪涌干扰、尘埃、有害气体及振动等等.采用中文菜单屏幕
At present, the temperature monitoring devices of wall and floor roller kiln at home and abroad mostly adopt the system composed of single chip microcomputer. The common MCS-51 single chip plus a certain signal conversion circuit, A / D conversion circuit and thermocouple, can only use LED display Display The thermocouple reference junction compensation and non-linear correction method is thermocouple reference junction migration, according to the migration temperature t ’, indexed by the index to find the compensation value e (t’, 0), and software compensation Computing, resulting in the reference end of the thermoelectric power after compensation e (t, 0), and then check pre-stored in the computer index table, the linear interpolation method to obtain the corresponding temperature t. This system is characterized by the curve can not be used Or graph visual display of the monitored volume, index table conversion and storage process is complicated, and the amount of memory is large.This is especially true for the corresponding system with a variety of indexing number.This paper developed a roller kiln temperature detection system PC bus IPC and its interface board, which is characterized by the working environment temperature at 0 ~ 60 ℃. All-steel chassis, all kinds of inserts are reinforced with fixed, can at any time in the industrial field of electromagnetic interference, power grid spikes or waves Chung interference, dust, gas And vibration, etc. using Chinese menu screen