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为了及时、便捷地监测大型粮仓内温湿度等环境参数的变化,设计了一种便携式粮仓温湿度监测仪。该监测仪以MSP430F449超低功耗单片机为核心,结合DS18B20数字温度传感器,HS1101电容式湿度传感器,BPW34光照度传感器硅光电池,作为测量环境参数的传感器,并添加了DS12C887时钟芯片、USB存储模块以及键盘和显示模块,设计了测温、测湿、测光照度的子程序以及外围接口模块的软件,实现实时温度、湿度和光照度的数据采集、显示和存储。系统功耗低,成本低,测量结果可存盘,对数据采集的准确性有极大的提高,性能可靠,很适合粮仓等室内环境参数的监测,应用前景广阔。
In order to timely and easily monitor the changes of environmental parameters such as temperature and humidity in large grain silos, a portable granary temperature and humidity monitor was designed. Based on the MSP430F449 ultra-low-power microcontroller, the monitor combines the DS18B20 digital temperature sensor, the HS1101 capacitive humidity sensor and the BPW34 illuminance sensor silicon cell as sensors for measuring environmental parameters and adds the DS12C887 clock chip, the USB memory module, and the keyboard And the display module, the subroutine of temperature measurement, humidity measurement and photometric illumination and the software of the peripheral interface module are designed to realize the data acquisition, display and storage of real-time temperature, humidity and illuminance. System low power consumption, low cost, measurement results can be saved, the accuracy of data acquisition has greatly improved, reliable performance, it is suitable for granary indoor environmental parameters such as monitoring, broad application prospects.