Design and Implementation of Temperature Measurement Circuit Based on CPLD

A complex programmable logic device(CPLD)-based control of the digital thermometer will be introduced,from both hardware and software on XC2C256—7VQ100CES temperature control system design,hardware and procedures schematic diagram of a concise description.The design presented by the digital thermometer with the traditional thermometer,compared to the reading convenience,a wide range of temperature measurement,accurate temperature measurement,digital output temperature revealed that the use of XC2C256—7VQ100CES controller design,the use of temperature sensors NTC resistor,with the LCD digital serial transmission of data,temperature can accurately achieve the above requirements.The range of the device is 35℃-42℃,and the precision,0.1℃,results of experiment demonstrate that the reliability and practicability of the digital thermometer are validated.