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A Study on Speech Control Interface for Vehicle On-Board Diagnostic System

This paper developed a speech controlled interface for vehicle on-board diagnostic (OBD) system. The proposed vehicle OBD system contains three parts. They are OBD embedded global position system (GPS-OBD) module, speech controlled interface, and vehicle surveillance server. The GPSOBD module is designed to monitor the real-time location as well as operation information of vehicle. The real-time location information contains driving date, driving time, longitude, and latitude obtained from GPS receiver. In addition to these-real time location information obtained from GPS receiver, the GPS-OBD module can also record the real-time vehicle operation information, e.g., vehicle speed, engine rpm, coolant temperature, battery voltage, fault code number, and others from OBD system. Both of the real-time location and operation information will be uploaded to the vehicle surveillance server via 3.5G wireless network. At the same time, the speech controlled interface can be used to operate the GPS-OBD module. The GPS-OBD module can recognize speech commands and make proper responses in text-to-speech (TTS) format to the drivers. The derivers therefore could safely operate the proposed system without removing their eyes from the road. The vehicle surveillance server is designed to receive and record the real-time vehicle information. The authorized supervisors or servicemen can use this server to access the state of vehicle in the real time. The proposed system is very useful for the detection of vehicle pollution, warning of vehicle malfunction, remote diagnosis, and roadside repair.