基于S3C2440触摸屏的数据采集系统

Data Acquisition System Based on S3C2440 Touch Screen

数据采集系统以S3C2440芯片为核心,TFT LCD触摸屏实现温度和电压的采集和显示。使用DS18B20作为温度传感器实现温度的采集,使用内部AD转换器现对外部送入电压的测量。该系统可以精确地检测到外部的一个待测电压值和温度值,并通过TFT彩色LCD模块显示出其值。可以通过触摸显示屏上"增加键"和"减少键"可以实现对温度、电压预设数值的加1或减1功能,当检测到电压、温度超过设定数值时,蜂鸣器会报警。也可触摸"模块转换键"实现温度、电压模式的切换。测量数据误差小、屏幕反应灵活、操作简单。

S3C2440 chip data acquisition system to the core, TFT LCD touch screen for temperature and voltage acquisition and display. Use as a temperature sensor DS18B20 realizes the temperature of the collection, using the internal AD converter into existing external voltage measurement. The system can accurately detect the external voltage and a measured temperature value and a color TFT LCD module by the value shown. On the touch screen can 'add key' and 'reduce the key' can be achieved on temperature, voltage preset value plus 1 or minus 1 function, when voltage is detected, the temperature exceeds the set value, the buzzer will alarm. Also touch 'module conversion key' to achieve switching temperature, voltage mode. Measurement data error is small, flexible response screen, simple operation.