Abstract
The single chip microcomputer is required extensively in measurement and control systems, and the temperature need to be surveyed, controlled and maintained by a system frequently. But the temperature is an analog, can not exchange information with the single chip directly. In principle, it is not difficult to transform the simulated temperature into the digital quantity, if adopting Proper technique .But gets the electric circuit more complex, the lost is more expensive, and other questions can be met. So it is very important for research of single chip temperature control.
This article mainly introduced AT89C2051 of Atmel、Digital Temperature Sensor of DS18b20、controllable silicon, which composed temperature measurement and control circuit, keyboard/LED display、signal magnifying circuit alarming circuit; Some important techniques in a design scheme of the software of the temperature by single-chip Microcomputer are introduced also.
Design of the system will not only compact, reliable performance, but an effective control system to improve the real-time control and precision, thus greatly improving the temperature control of the degree of automation; applies not only to control temperature, also applies to the industrial temperature monitoring and control.
Keywords: Single-chip Microcomputer，DS18b20，Temperature sampling, Temperature control
