K型热电偶采集电路

温度采集电路：RE2RO1VCC8GND5DE3DO/RI6DO/RI7DI4U67LB176VinVoutGNDVR1P0.0/CMP21P1.72P1.63P1.5/RST4VSS5P2.1/X16P2.0/X2/CLKOUT7P1.4/INT18P1.3/INT0/SDA9P1.2/T0/SCL10P1.1/RxD11P1.0/TxD12P0.7/T113P0.6/CMP114VDD15P0.5/CMPREF16P0.4/CIN1A17P0.3/CIN1B18P0.2/CIN2A19P0.1/CIN2B20U2LPC922FCS1CH02CH13GND4DI5DO6CLK7VCC8U3V0832C+IN1HYS2GND3V-4FB5VOUT6V+7-IN8U4AD597ARC+52512107+5+5D1BAV99S9ADGNDGND+5-+GNDGND测温插头ATMEGA161234J3IP2GNDVCC3.3VCC3.3VCC3.3VCC3.3GND+5GNDL4GND12345678910J4+5GNDGNDLS1312Q51FWGND+5LS2GNDGNDJ4/9J4/9J4/10J4/10GND+5GNDR51800R64701R71001R84702R114701R104701R94702C+310U/10VC+410U/10VS6S6J4/7J4/8C5104C6104C7104C8104C9104C10104C11104C19104C37400V/22nGNDGND电路功能说明：1.测温探头处为K型热电偶插口，本厂热电偶型号为K型热电偶，材料为铂铑合金丝，测温范围0—1300°。2.测温原理，热电偶因温度变化产生弱的电信号，此信号送给AD597芯片（专用于温度测量用集成电路），再送给V0832转化成数字信号，再送给单片机LPC922进行运算。3.此电路测温范围0-240度。4.因温度探头为表贴测温，所以受环境因素、人员操作等影响较大，影响测温的准确性。