LIAO Sheng-kai, LIU Yin-nian. Multi-channel temperature control system based on three-wire measurement and USB 2.0[J]. 2009, 28(2): 63-65. DOI: 10.13873/j.1000-97872009.02.029.
The design of a multi-channel temperature control system based three-wire measurement and USB 2.0 is described.The system uses platinum resistors as temperature sensor and a 24 bitAD chip AD7713 to convert temperature signal to digital signal
heating module outputs 4 channels of PWM signal and software is based on PID theory.The system can be used independently or used with a PC through the USB interface.