摘要
通过AT89C51单片机芯片可实现对森林环境因子自动监测,并控制高频头实现远程数据的无线传输。无线传输由无线收发及放大模块组成。收发模块采用超外差二次变频调频制式、36MHz短波频率传送数据信息,数据格式为BCD码。收发模块均采用金属壳体进行电磁屏蔽,具有抗杂波干扰强、保密性好、遥控距离远、工作稳定可靠等优点,非常适用于林区森林环境因子自动监测和无线传输。
AT89C51 single chip is used to monitor the forest environment factor automatically, the wireless transmission of long range data is realized by controlling the high frequency tuner. The wireless transmission is composed of wireless transceiver module and enlargement module. The transceiver module adopts the superheterodyne modulation mode （two-step conversion） and uses the 36 MHz shortwave frequency to transmit data, and the data format is the BCD code. The metal shell used in the transceiver module for electromagnetic shield has the merits of strong anti-noise jamming, good secrecy, long distance remote control, stable and reliable operation, and so on, which is extremely suitable for the automatic monitoring and wireless transmission for forest environment factor.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2007年第6期88-91,共4页
Journal of Northeast Forestry University
关键词
高频头
环境因子
自动监测
无线传输
High frequency tuners
Environment factors
Automatic monitoring
Wireless transmission
