Abstract:  In order to realize the positioning and parameter acquisition of forest fire engines in less net forest areas, a communication positioning and parameter acquisition system based on Beidou short message is developed by using sensing technology and Beidou short message technology. The system includes data acquisition system and Beidou short message communication system. The designed parameter acquisition system uses STM32 chip to collect sensor data, and uses the GPS positioning function of the tablet computer to obtain the position of the forest fire truck. Under the condition of weak signal or even no signal in the original forest area, Beidou short message technology is used to report the sensor parameters and position information of the rescue fire truck. The vehicle terminal of the command vehicle receives message information, stores it locally, uploads it to the cloud, and supports APP real- time display. The test results show that the system positioning accuracy can overcome the influence of environmental emptiness,and the whole system runs well and can collect the parameters and position information of the fire truck in the non- network environment, which meets the expected design requirements and can be used as an effective means to improve the rescue of the non- signal forest area, so as to improve the safety and efficiency of the fire fighting in the non-signal forest area. 

Key words: forest fire truck, vehicle positioning, parameter acquisition, network architecture