Composition unit of on-board system

　　1 GPS Processor (GPSPU)

　　It is an information system installed in the vehicle to continuously calculate the vehicle position. It has the characteristics of small size, unsmooth surface and light weight. It can communicate with the command center and also serve as an independent data recorder (with black box).

　　Components of GPSPU:

　　High quality GPS receiver; A microprocessor; Black box memory; Modem for communication; Interfaces provided for peripheral equipment; Is an individual transponder (optional); Differential receiver (optional).

　　It is an internal GPS receiver designed for moving objects, which can accept 12 channels and sensitive RF front ends. Scientific software computing methods enable the device to have good performance in harsh environments, such as tall buildings and trees in its area. It can locate quickly, and get the signal again quickly after the signal is lost.

　　2 Microprocessor

　　There is a processing chip for the internal operating system in the GPSPU box. It reads the position output from the GPS receiver and stores the information in the current format into the memory of the motherboard (or transmits the data back to the control center through the optional internal modem). Most functions of the system GPSPU are provided by its software, and the system can be compatible with the user's system to the maximum extent. It can control input/output and peripheral additional devices. The function of most microprocessors is controlled by the control center.

　　3 Black box (data recording)

　　The GPSPU continuously records the location information of the vehicle and stores it in the memory of the motherboard. Data recording and recording frequency can be set to meet different needs. Because the fixed memory is a fixed memory, even if the GPSPU system is permanently without power. It can also protect data well. The location information recorded in the GPSPU memory generally includes the vehicle's identification number, date, time, latitude, longitude, speed, GPS status, etc.

　　4 Communication options

　　The VTS system uses the most advanced technology today and is compatible with all current standard communication networks. When communication connection equipment (such as RF, GSM modem) is required for remote monitoring and operation, any standard communication modem can be used. Most communication modems can be loaded into the GPSPU system.

　　5 Interface of peripheral equipment

　　The standard GPSPU has three optical blocking interfaces and four open electronic output ports, which can be used to receive or send back electronic signals to other devices, such as door locks, alarms, sensors, etc. At the same time, it also provides two serial communication ports and one bus interface for the connection of mobile digital terminals, displays/keyboards, differential receivers, alarm systems, vehicle control equipment, etc.

　　6 Watch band forward/receiver

　　It is designed for personal safety. The on-board system can accept signals sent by watchband repeater/receiver to complete multiple tasks. The effective linear distance is within 100m.

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