K type thermocouple temperature acquisition module design

This paper introduces a design based on single chip microcomputer of wide range, high precision, intelligent and cost-effective K type thermocouple temperature acquisition module design method. This system with C8051F350 MCU as the core control device, using C8051F350 internal programmable gain amplifier and A/D converter for signal amplification and modulus conversion, temperature data into A * after will receive. Using C language to complete the design of the software part, which is a combination of average filtering and digital signal processing technology such as intelligent instrument technology such as the calibration; Introduces the software programming ideas, program flow chart are given, and * eventually finished PCB circuit and prototype production, debugging. By actual test, the prototype can support common K, S, E, T, B and J type K type thermocouple sensors, sensor * under the large scale precision reached 0. 1%, it is also supported based on RS - 485 interface MODBUS fieldbus protocol. Make full use of the number of MCU * * calculation and control function, the system hardware is relatively simple, the software structure optimization, to achieve a wide range, high precision, intelligent and cost-effective * at the beginning of design thought. * after the actual test data of a prototype, the result of the test error are analyzed, this system design is summarized and prospected. Dear customer: hello, our company is a strong technical force of the development of high quality, for the majority of users with high-quality products and complete solutions and the best technical services company. The main products are platinum rhodium thermocouple S type thermocouple sheathed thermocouples tungsten-rhenium thermocouples, etc. This enterprise uphold sincerity, with the purpose of the implementation of quality and with enterprising societe generale, with a firmer step climb the new peak unceasingly, contribute to national automation industry, welcome new and old customers to rest assured the choose and buy the desired products. We will serve you wholeheartedly!