Aimed at the question of multipoint temperature long-distance control

a long-distance intelligent temperature switch with the function of CAN bus communication

keyboard input and digital display is designed. The basic principle of temperature measurement is introduced. The corresponding hardware circuit design and software implementation of single chip micyoco are given. The experimental results show that the precision is about 3. 9 × 10 -3

the response time is under 6 s. This temperature switch has small error

stable characteristics and it is able to meet overall performance requirements. It reached the predetermined design effect .