Abstract
This paper aims to design a microcontroller as the core temperature of the electrical protection system controller, and the electrical temperature control.
The controller system is AT89S51 as the core chip, the necessary expansion of peripheral chips built on. Download cable to download the corresponding procedures, On the one hand, the temperature in the electrical protection system did not work as a system under the control of the core work of the independent operation mode, that is collected from sensors voltage changes, the ADC0809 can be converted SCM independent process and the final processing of data The results sent to the temperature of the implementing agencies protection system - the electrical heating system for the implementation of temperature. On the other hand the state of the electrical work to achieve real-time motor temperature display. When can not guarantee that request, are given voice, the alarm signal light.
In the design process, taking into account the possible existence of interference impacting the system, adding a soft, hardware anti-jamming measures to enhance the system's ability to resist interference. Furthermore, in order to meet possible future needs control, design also have a large amount of redundancy.
Keywords: micro-controller; AT89S51; sensor; AD590; Motor temperature protection