基于CPLD芯片的温、湿度控制系统设计

Design of Temperature and Humidity Control System Based on CPLD Chip

摘要:

传统的温湿度控制系统在控制饲料配方所处环境温度和湿度时，很难在短时间内达到标准值，控制过程波动较大。针对上述问题，基于CPLD芯片设计了一种新的温湿度控制系统，系统硬件结构中的传感器选用SH11传感器，利用CLPD芯片校对已经得到的温度信号和湿度信号，通过2个按键和多个接口设置系统网关，引用SS14设置控制电路，结合继电器调节温度和湿度。在IAR开发平台上使用C语言和汇编语言编写了传感器采集节点程序、控制节点程序和网关程序。为检测系统效果，与传统控制系统进行实验对比，结果表明，基于CPLD芯片设计的温湿度控制系统能够在短时间内将饲料配方所处环境温度和湿度调节到标准值附近，控制过程波动小，更适合饲料配方的生产和存储。

Abstract:

When the traditional temperature and humidity control system controls the ambient temperature and humidity of the feed formulation, it is difficult to reach the standard value in a short time, and the control process fluctuates greatly. Aiming at the above problems, a new temperature and humidity control system is designed based on CPLD chip. The sensor in the hardware structure of the system uses SH11 sensor. The CLPD chip is used to proofread the obtained temperature signal and humidity signal. It is set by 2 buttons and multiple interfaces. System gateway, reference SS14 set control circuit, combined with relay to adjust temperature and humidity. The sensor acquisition node program, control node program and gateway program are written in C language and assembly language on the IAR development platform. In order to detect the system effect, compared with the traditional control system, the results show that the temperature and humidity control system based on CPLD chip design can adjust the ambient temperature and humidity of the feed formula to the standard value in a short time, and the control process has small fluctuations. More suitable for the production and storage of feed formulations.