Aiming at real-time data requirements of highway tunnel early warning system and ventilation control system

the real-time and integration degree of the existing monitoring system is improved

and the road tunnel operation environment awareness system bases on general packet radio service（GPRS） is designed. The system uses STM32 as the core to collect and process harmful gas

temperature and air pressure

visibility and wind speed information

then upload to the server by GPRS module. The upper personnal computer（PC） of the monitoring center obtains and analyzes the operational data. The experimental results show that the system is stable in operation and high in accuracy

which can meet the design requirements and has positive significance for ensuring the safety of highway tunnel operation.