Vehicle Tracking System
Visiontek 86VT Vehicle Tracking Unit consists of a built-in GPS receiver, GSM modem and battery for back up during failure of external power. The unit is provided with RS-232 port for configuration of the device. The unit is also provided with voice port for connecting headset for two-way communication and a uzzer for incoming call indication.
The unit is provided with internal battery with charging facility for back-up during external power failure. The unit also equipped with two digital inputs in addition to Ignition ON/OFF detection and one digital output for driving external relay circuit. The device is also equipped with intelligent power management for detecting the external power removal / failure. When external power is removed or failed, communication will be sent to the pre-define number/server.
All the communication with the user/server is handled by Tri-Band GSM/GPRS module which accurately delivers all the navigation data. The communication is either through Short Message Service (SMS) or GPRS network. The unit can be remotely configured (OTA Configuration). In addition the unit is provided with two switches for Voice & SMS communication with pre-defined numbers.
Abstract: This application note describes a simple way to track the location of a vehicle and identify whether it has an authorized driver based on 1-Wire® technology. This has many uses such as finding stolen vehicles, creating automatic vehicle logs, and managing a fleet of trucks and buses. An example of how to do this is described. It uses a Garmin GPS 35 GPS receiver, a Siemens TC35 GSM module, a DS1990A Button®, a Parallax BASIC Stamp® (BS2P) microcontroller, and, of course, sample source code.