Design and Implementation of Industrial Multi-Parameter Data Acquisition System Based on AT89S52

In order to monitor industrial parameters such as the temperature, pressure, and humidity more intuitively, a multi-channel data acquisition system is designed. In the system, AT89S52 is used to control the LCD that displays different parameters with different colors. The system is composed of these components: MCU, data acquisition device, analog signal amplifier, A/D converter, and intelligent color LCD. The data acquisition module can collect temperature (AD590), pressure (MPX10DP) and humidity (HM1500). MCU communicates with LCD via serial interface. C language is used to compile and develop the software. In the experiment, installation debugging and trouble shooting are provided. The system is able to dynamically display histograms in different colors to indicate the real-time values of the parameters. In case of the out-of-limit of values, an alarm circuit is also designed.