基于89C52单片机的恒温控制系统设计资料.docVIP

基于89C52单片机的恒温控制系统设计 摘 要 温度的测量与控制在工业、农业、国防、科研、医疗等行业有着广泛的应用。随着电力电子技术的不断发展，各种高性能的模数转换器在温度测控领域得到了极为广泛的应用。 本设计的控制系统，采用公司推出的MCS-5系列单片机8C52为控制核心，具有、及数字显示等功能从硬件和软件两方面介绍了单片机控制系统，对硬件原理图和程序图作了简洁的描述。此次设计的系统主要是由、温度、显示等模块组成温度部分采用，显示LED数码管。采集信号送给单片机，单片机对信号进行相应处理，并把温度LED显示，从而实现控制的目的。单片机 ABSTRACT Temperature measurement and control in industry, agriculture, national defense, scientific research, medical and other industries widely used. With the continuous development of power electronics technology, a variety of high-performance analog-in temperature measurement and control field has been very widely used. The design of the temperature control system based on single chip, using the company launched INTEL MCS-51 series 89C52 microcontroller to control the core, with the flexibility to set upper and lower temperature, limit alarm, self-adjust the temperature, set-reset, and digital display. Papers from both hardware and software aspects introduced microcontroller-based temperature control system, and the hardware schematic diagram and made ??a concise description of the program. The design of microcontroller-based temperature control system is mainly by the microcontroller, temperature acquisition circuit, relay control circuit, display circuit modules, some of which temperature acquisition using ADC0808 ADC, some with LED digital tube. Will be collected ADC0808 analog signal into a digital signal to the microcontroller, the microcontroller signals dealt with accordingly, when the temperature exceeds the set limit value, the MCU control alarm system, alarm, and drive the relay opens the corresponding switch so that the corresponding actuator operation, by controlling the relay control an external heating means or cooling means that the ambient temperature is set within the upper and lower temperature range, and the temperature data to the LED display, in order to achieve temperature control. This design not only developed the basic principles of design programs, but were protues k