Abstract:

An alcohol-detection system and an all-in-one safety-start system were designed to prevent drunk drivers evading from detections and to ensure driving safety. The system should test drivers’ alcohol before starting the car by voice. The system’s control-core was an open-source electronic-prototype platform Arduino.
The system has a basic safety-driving-detection function by combining an alcohol-sensor module with a voice-sensor module. The system modules were installed in two places and the two separated modules were communicated by a single-chip wireless-transceiver chip NRF24L01 working at the frequency band of industrial scientific medical (ISM) of 2.4-2.5 GHz. Undergoing tests, the experimental detection success-rate is more than 95%. The results show that the system improves the detection success-rate of alcohol sensors. Therefore, the system is simple and easy to install, improves the detection-sensitivity of traditional drunk-driving detection system, and avoids detection evading.

Key words: automobile active safety, alcohol detection, platform Arduino, voice start automobile, wireless transceiver chip NRF24L01