CN2500542Y

CN2500542Y - Vehicle carried terminal for non-blind-zone global positioning communication

Info

Publication number: CN2500542Y
Application number: CN 01254495
Authority: CN
Inventors: 韩俊波; 刘泽; 王丙虎
Original assignee: Nokia Shanghai Bell Co Ltd
Current assignee: Nokia Shanghai Bell Co Ltd
Priority date: 2001-11-02
Filing date: 2001-11-02
Publication date: 2002-07-17
Anticipated expiration: 2011-11-02

Abstract

A global positioning and communicating vehicle-carried terminal free of blind zone includes a vehicle-carried terminal controller for receiving and sending a scheduling signaling, processing GPS data and GSM position information, and driving and controlling periphery elements; a GPS for receiving GPS global positioning date; and a handle for calling and answering a call, sending and receiving messages, and performing parameters setting. The utility model returns GSM network information instead of GPS information to a monitoring server in an environment where GPS signals cannot be received, i.e. GPS blind zone, and controls positioning precision in an acceptable range, thereby effectively solving shortcomings of the prior art and eliminating blind zone of positioning information. The direct utilization of GSM network information has high reliability and easily-achieved popularization.

Description

A kind of non-blind area global positioning and communicating car-mounted terminal

(1) technical field

The utility model relates to a kind of car-mounted terminal, relates in particular to a kind of non-blind area global positioning and communicating car-mounted terminal.

(2) background technology

Along with being gradually improved and popularizing of GSM (global system for mobile communications) technology and GPS (global positioning system) technology, GPS/GSM becomes the ideal of vehicle mounted communication and selects.At present, increasing vehicle begins to assemble special vehiclees such as vehicle mounted communication equipment, particularly taxicar, bus, lorry, postal car, cash transit carrier and begins to widely apply scheduling/safety system.But there is a bigger defective in present GPS/GSM system, mainly be present in the car-mounted terminal side, that is: gps signal intensity is lower, so will be difficult to receive gps data when had shelter the same day in vain, such as in zones such as overhead, subway, tunnel, garages, thereby caused the outwardness of blind area in this system.The existence of this blind area will cause great hidden danger to the sacurity dispatching of vehicle (particularly special vehicle).

At the existence of blind area, two kinds of solutions are arranged roughly at present.One, at the additional again rate generator of on-vehicle terminal device part, just starting angular velocity sensor like this when moving target can't receive the gps satellite locating information provides inertial positioning information, reaches the purpose that positional parameter and data are provided.Its two, utilize to cover perfect GSM network and extract locating data from network side.But the scheme of the former addition speed producer when increasing cost also installation and the disguise to final terminal cause certain difficulty.The network side location that the latter takes belongs to bigger system engineering, need upgrade to network, a large amount of Location Requests will increase the network signal load simultaneously, and the interconnection of the intercommunication between each network vendors equipment is also relatively more difficult in addition, and these factors all will greatly increase construction cost.

(3) summary of the invention

The purpose of this utility model is at the deficiencies in the prior art, do not increasing end side and server side cost and do not influencing on the basis that final terminal is easily installed and disguise requires, utilize GSM network coverage characteristics widely, in end side the network information is monitored, in not receiving the environment of gps signal, substitute GPS information and return monitoring server, thereby eliminate the blind area of locating information with the GSM network location information.

A kind of non-blind area global positioning and communicating car-mounted terminal provided by the utility model, it comprises the car-mounted terminal controller, handle and GPS steady arm, be characterized in: the car-mounted terminal controller, it contains the GPS interface, handle interface, universaling I/O port, be responsible for by the GSM public network with short message form transmitting-receiving dispatch, handle gps data and GSM location information, drive and control GSM hardware and peripheral components, realize gsm protocol stack function, analyze and handle dispatch, handle gps data and GSM location information, judge the switching whether Vehicle mounted station is in the GPS blind area and finishes data type when being in the blind area; Handle, the handle interface by described car-mounted terminal controller links to each other with the car-mounted terminal controller, makes the user carry out the near-end configuration, to send or read short message car-mounted terminal, also can answer or Outgoing Call; The GPS steady arm, the GPS interface by described car-mounted terminal controller links to each other with the car-mounted terminal controller, is used to receive gps data

According to technique scheme as can be known, the utility model uses the GSM network location information to substitute GPS information in not receiving the environment of gps signal (being the GPS blind area) and returns monitoring server, and with Positioning Precision Control within acceptable scope, solve the deficiencies in the prior art effectively, eliminated the blind area of locating information.This GSM network information of directly utilizing, the reliability height is easily popularized.

(4) description of drawings

Fig. 1 is a structural representation of the present utility model.

(5) specific embodiment

As shown in Figure 1, the utility model comprises:

Car-mounted terminal controller 1, it is responsible for by the GSM public network with short message form transmitting-receiving dispatch, handle gps data and GSM location information, drive and control GSM hardware and peripheral components, realize gsm protocol stack function, analyze and handle dispatch, handle gps data and GSM location information, judge the switching (switching to the GSM locating data) whether Vehicle mounted station is in the GPS blind area and finishes data type when being in the blind area by the GPS locating data.It can adopt that Bei'er Co., Ltd., Shanghai produces, the model terminal controller for " SmartTracer (Positioning Satellite) ".

GPS interface 2, this is a standard RS232 serial ports, is driven by car-mounted terminal controller 1, can link to each other with the GPS steady arm with 4800/9600bps;

Handle interface 3, this interface combine standard serial port and audio frequency IO interface, and car-mounted terminal controller 1 links to each other with handle 4 by this interface, and serial ports is used for logical AT order, and the audio frequency IO interface is used for conversation voice.

Universaling I/O port 4, car-mounted terminal controller 1 links to each other with sensor by general input/output port, thus equipment such as the oil circuit of monitoring automobile, circuit, car door.

Handle 5 links to each other with car-mounted terminal controller 1 by handle interface 3, makes the user carry out the near-end configuration, to send or read short message car-mounted terminal by the AT order, also can answer or Outgoing Call by the audio frequency IO interface; If for concealed consideration, also can not take over handle 4.It can adopt that Motorola (Motorola) company produces, model is the handle of SCN2711B.

GPS steady arm 6 links to each other with car-mounted terminal controller 1 by GPS interface 2, is used to receive gps data.The model that it can adopt Rockwell (rockwell) company to produce is the GPS steady arm of Jupiter (cupid).

Above-mentioned GPS steady arm is used to receive the locating data that satellite (totally 24 are distributed on 6 different Earth's orbits) is sent each second, and goes out the coordinate in self geographic position of living in according to the data computation of sending from different satellites more than three.

Handle is an optional equipment.

Dispatch in the realization between car-mounted terminal and the monitor service end and locating data are transmitted with the short message form by the GSM public network.

Claims

1. non-blind area global positioning and communicating car-mounted terminal, it comprises car-mounted terminal controller, handle and GPS steady arm, it is characterized in that:

The car-mounted terminal controller, it contains GPS interface, handle interface, universaling I/O port, be responsible for by the GSM public network with short message form transmitting-receiving dispatch, handle gps data and GSM location information, drive and control GSM hardware and peripheral components, realize gsm protocol stack function, analyze and handle dispatch, handle gps data and GSM location information, judge the switching whether Vehicle mounted station is in the GPS blind area and finishes data type when being in the blind area;

Handle, the handle interface by described car-mounted terminal controller links to each other with the car-mounted terminal controller, makes the user carry out the near-end configuration, to send or read short message car-mounted terminal, also can answer or Outgoing Call;

The GPS steady arm, the GPS interface by described car-mounted terminal controller links to each other with the car-mounted terminal controller, is used to receive gps data.