![]() ![]() In this system, because it is 4-channel temperature acquisition, so the serial mode is used to collect 4-channel temperature in turn, and the P2 port of MCU is used to transmit and feedback data.īy using the algorithm, the collected data are processed in the single chip microcomputer, and converted into hundreds, tens and tens of bits, which are output through the P0 port.īy calling the LCD display function, the temperature is displayed on the LCD in two lines in real time. The system design block diagram is as follows:įirstly, the K-type thermocouple is used to check the ambient temperature, and then the K-type thermocouple analog-to-digital converter MAX6675 is used to convert the ambient temperature into 12 bit binary data, which is collected into the MCU for data processing. AT89S52 MCU and its peripheral circuit are composed of crystal oscillator circuit, reset circuit, temperature acquisition circuit, temperature display circuit and alarm circuit. The system uses K-type thermocouple to collect temperature, so the design consists of temperature collection part, data processing part, temperature display part, fault display and display part. ![]()
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