Abstract: For collecting bus security information remotely all-around the ground,the hardware and software designs are achieved through radio frequency identification module and infrared,smog and door magnetic sensors.The data acquired by the sensors are transmitted to the wireless ratio frequency identification through serial interface.The smog sensor is for the prevention of fire in the bus.The door magnetic sensor and infrared sensor are for the prevention of theft.The site testing results show that the module is capable of processing and delivering the signals from sensors accurately and effectively，and can be used in bus security system.

Key words: data acquisition, wireless module, MCU