The Research And Development Of Digital Radio Based On XTend RF Module

Temperature and humidity are important parameters in system control, along with the development of industrial and agricultural production and stable acquisition of its parameters on the control system plays an important role, therefore, temperature and humidity environments have become increasingly demanding. Making the measurement of temperature and humidity control device and more widely. Many industries now have a higher temperature and humidity requirements:in biochemistry pharmaceutical, food storage areas and greenhouse environment, the need to control temperature and humidity environment. Therefore, the temperature and humidity testing has become an important industrial process technology requirements.This design XTend RF module based on the temperature and humidity acquisition device for continuous real-time temperature and humidity data acquisition. System consists of temperature and humidity sensor part of the microcontroller section, liquid crystal display part of the wireless transmission part and serial transmission parts. The traditional signal acquisition of temperature and humidity is to use analog sensors, the analog signal is then collected after the sensor signal conditioning circuit class, including amplification and hardware filtering, so that the signal to reach to a reasonable range, then the A / D conversion, the final into the microcontroller for digital processing. After comprehensive consideration, the system uses advanced digital temperature and humidity sensors DHT11 to ATmega16 as the master chip. Achieving remote data transmission by XTend radio frequency module Through the RS232 serial port to transfer data to the computer, the data on the data obtained curve analysis, historical query.This design XTend RF module based on the temperature and humidity acquisition device, after the actual experiment, collecting temperature and humidity measurements more accurate, real-time wireless transmission, the device is stable. XTend radio frequency module by wireless transmission temperature and humidity data transmitted to overcome the limitations of traditional wired for remote monitoring of temperature and humidity environment provides an effective means.