CN1948993A - Vehicle mounted positioning GPS terminal - Google Patents

Abstract

The invention relates to vehicular orientation GPS terminal. It includes MCU, JTAG interface, reset circuit, storage, crystal vibrating, oil-break power break, power supply detecting, cell detecting, power supply module, charging module, GPRS module, GPS module, alarm detecting, ACC detecting, handle, or display screen. The terminal integrates flush type operation system, uses GPS module to collect data, transmits the information to the service center by GPRS module, and precisely reflects vehicle position and state on the service center map. Thus it can be widely used in automobile, steamship, train, airplane, measurement etc.

Description

Vehicle mounted positioning GPS terminal

Technical field

The invention belongs to the EDP technology field, particularly a kind of satnav track terminal.

Background technology

The GPS technology was used in the military affairs in the past more, was mainly used in the land, sea, air navigation, pinpoint bombing and ship-based missile guidance.GPS obtains to develop rapidly in the application and the research of civil area, has related to all many-sides such as personnel's lifesaving, communication navigation, map making, fire tracking, earthquake monitoring at present.GPS contacts maximum still traffic guidance systems with people's daily life, especially the application on automobile, steamer, train, aircraft is popularized rapidly.More and more in the use of China's automobile, to the management of vehicles new requirement height of also having arrived, to the tracking of vehicle and antitheftly all bring into schedule.

Gps system in automobile not only can make the driver find the position of oneself, can also point the direction.The driver if on the GPS display screen input destination title, automobile will be selected best route automatically, and avoids the traffic jam highway section, as runs into dangerous situation and can also in time remind the driver.Because little, the low price of volume is installed a kind of fashion selection that GPS has become the automobile consumer at present.In addition, all kinds of small-sized GPS product that aspects such as mountain-climbing, aviation, measurement are used has also carried out on a large scale coming into the market, has improved people greatly and has carried out the security of these country sports.Along with going deep into of research and development, the application prospect of GPS technology in people's daily life is with boundless.

Summary of the invention

The purpose of this invention is to provide vehicle mounted positioning GPS terminal.This terminal is except possessing basic locating alarming function, the singularity of bound fraction automobile industry also, increased the curing of Chinese character note, vehicle location restriction etc., can satisfy the user demand of different user, accomplish again easy and simple to handle, the ordinary labourer easily left-hand seat even do not need the operation.

The present invention includes MCU, jtag interface, reset circuit, storer, crystal oscillator, oil-break power break, power supply detection, battery detecting, power module, charging module, GPRS module, GPS module, alarm detection, ACC detection, handle or display screen.Wherein the port of jtag interface correspondence connects TCK, TDI, TDO/TDI, the RST/NMI port of MCU; The corresponding RST/NMI interface that connects MCU of the port of reset circuit; The corresponding P3.0-P3.3 port that connects MCU of the port of storer; Corresponding Xin, Xout, X2in, the X2out port that connects MCU of the port of crystal oscillator; The corresponding P5.7 port that connects MCU of the port of oil-break power break module; The corresponding P5.4 port that connects MCU of the port that power supply detects; The corresponding P6.1 port that connects MCU of the port of battery detecting; Corresponding P3.6, P3.7, P5.0, the P5.1 port that connects MCU of the port of GPRS module; Corresponding P1.2, the P1.6 port that connects MCU of the port of GPS module; The corresponding P2.3 port that connects MCU of the port of alarm detection; The corresponding P5.3 port that connects MCU of the port that Acc detects; Corresponding P3.4, the P3.5 port that connects MCU of the port of handle or display screen; And power light, GPRS module networking pilot lamp.On the MCU chip, also solidified embedded software.

The present invention is that the GPRS wireless data transmits, GPRS speech processes, the performance car mounted terminal that the vehicle control technology combines with the GPS location.It receives locator data by the GPS module, by the GPRS module data is sent to backstage service centre, offers customer location and status information in conjunction with map.Can also carry out voice call by this terminal user simultaneously, note sends, and monitors vehicle.When the GPRS signal was very weak, when terminal can not send to information on the background server, data can be handled through CPU, are stored in the user data conservation zone, beam back service centre after the GPRS signal recovers, and guarantee the integrality of track of vehicle.

Description of drawings

Accompanying drawing 1 is the functional block diagram of the embodiment of the invention

Accompanying drawing 2 is the logic theory block diagram of the embodiment of the invention

Accompanying drawing 3 is the main control schematic diagram of the embodiment of the invention

Accompanying drawing 4 is the GPRS module principle figure of the embodiment of the invention

Accompanying drawing 5 is the GPS module principle figure of the embodiment of the invention

Accompanying drawing 6 is the electric power management circuit schematic diagram of the embodiment of the invention

Embodiment

Below in conjunction with accompanying drawing, embodiments of the invention are specifically described:

With reference to the accompanying drawings 1,2, the embodiment of the invention comprises that MCU (1), jtag interface (2), reset circuit (3), storer (4), crystal oscillator (5), oil-break power break (6), power supply detect (7), battery detecting (8), power module (9), charging module (10), GPRS module (11), GPS module (12), alarm detection (13), ACC detects (14), handle or display screen (15); Wherein the port of jtag interface (2) correspondence connects TCK, TDI, TDO/TDI, the RST/NMI port of MCU (1); The corresponding RST/NMI port that connects MCU (1) of the port of reset circuit (3); The corresponding P3.0-P3.3 port that connects MCU (1) of the port of storer (4); Corresponding Xin, Xout, X2in, the X2out port that connects MCU (1) of the port of crystal oscillator (5); The corresponding P5.7 port that connects MCU (1) of the port of oil-break power break module (6); Power supply detects the P5.4 port of the corresponding MCU of connection of port (1) of (7); The corresponding P6.1 port that connects MCU (1) of the port of battery detecting (8); Corresponding P3.6, P3.7, P5.0, the P5.1 port that connects MCU (1) of the port of GPRS module (11); Corresponding MCU (1) P1.2, the P1.6 port of connecting of the port of GPS module (12); The corresponding P2.3 port that connects MCU (1) of the port of alarm detection (13); Acc detects the P5.3 mouth end of the corresponding MCU of connection of port (1) of (14); Corresponding P3.4, the P3.5 end that connects MCU of the port of handle or display screen (15).

With reference to the accompanying drawings 3～6, in embodiments of the present invention, jtag interface (2) is used for the debugging software system, and the programming software program uses; Reset circuit (3) is used for providing reset signal to terminal after system powers on; Preserve gps data when storer (4) is used for a little less than the GPRS signal, after the GPRS signal recovers, send to service centre again, guarantee the integrality of track of vehicle; Crystal oscillator (5) is made of jointly low speed crystal oscillator and high speed crystal oscillator, needs high speed crystal oscillator transmission data when carrying out data transmission, when the user does not need to send data system is switched to battery saving mode, reduces power consumption of terminal; Oil-break power break (6) is the order that sends oil-break power break when service centre's unusual circumstance to system, and the order vehicle stops; It is to send warning message and locating information by standby lithium battery power supply to service centre when the system discovery power supply is cut off that power supply detects (7); Battery detecting (8) is that the user can learn the time that terminal can also be worked accurately by the situation of terminal to center transmission reserve battery electric weight; Power module (9) is the input voltage that reduces terminal, makes it to meet the voltage that terminal is used; Charging module (10) is that standby lithium battery is charged; GPRS module (11) is used for locating information, and car status information sends to backstage service centre, and receives the data that backstage service centre is dealt into terminal, sends microprocessor to and handles; GPS module (12) is used to receive the GPS locating information and sends to microprocessor processes; Alarm detection (13) is that to be used for running into abnormal conditions the driver be to press alarm button to report to the police to backstage service centre, and the center can be by monitoring MIC or directly monitoring processing with handle; It is that terminal detects this signal that ACC detects (14), can determine whether terminal works, and when ACC is that high level is a terminal works, is that low level is that terminal quits work at the ACC signal; Handle or display screen (15) be as user and module, and the interaction platform of user and service centre is used for the operation interface and the information of display system, comprises image, Chinese character, character, numeral etc.

The components and parts model that the embodiment of the invention adopted is as shown in the table:

The components and parts title

Model

Encapsulation

MCU	MSP430F149	LQFP 64
			Storer	AT45DB041B	SOIC8
The GPRS module	SIM300C
			The GPS module	uBlox(LEA-4H)
Note amplifier	UTC34119	SO8
			Power management chip	LM2596-5	TO-263-5
Power management chip	SP6205	SOT23-5
			Serial port chip	MAX232	SO16

Function that the embodiment of the invention has reached and target:

(1) ACC is carried out state variation, be connected to high level terminal operate as normal, be connected to low level or disconnection, terminal is not worked;

(2) there is locating information to be uploaded to service centre in the stipulated time;

(3) pressing button reports to the police;

(4) carry out remote monitoring;

(5) blind area compensation data are carried out data and are preserved in the time of a little less than the GPRS signal, send to service centre after the GPRS signal is normal;

(6) power lead is cut off warning;

(7) can pass through talking handle, computer, service centre is provided with the IP of terminal, ID, port numbers;

(8) make a phone call caller identification by handle;

(9) the cancellation state of looking out for the car is set; The user can talking handle oneself be provided with the duty of terminal;

(10) adjustable at interval to the locating information of service centre's transmission; The user is provided with by computer, and locating information is uploaded locating information in official hour, guarantees user's maximum benefit

(11) oil-break power break function, middle mind-set terminal sends instruction, and terminal is controlled timely to vehicle, guarantees user's interests;

(12) short message is handled, terminal can and the user, can carry out note with service centre and exchange;

(13) fence, terminal will send prompt messages to service centre when vehicle ' is outside to fence;

(14) solidify the conversation object, the object of conversation can be set, can not make a phone call in violation of rules and regulations;

(15) switching of between talking handle and headset, conversing;

(16) speed is reported to the police, and when the speed of terminal is too fast, sends warning message to the center;

Concrete technical indicator:

Power interface	12V-32V
		Electric current	200mA (holding state), 350mA (duty)
Velocity accuracy	＜＝0.2M/S
		Traffic rate	9600bps
Cold start-up positioning time	＜600s
		Warm start positioning time	＜60s
Bearing accuracy	＜15 meters
		Frequency range	GPS 1575.42MHz GPRS 900/1800MHz
The terminal works temperature	-20 degree-+55 degree
		The antenna working temperature	-30 degree-+75 degree
The cable working temperature	Be not more than 85 degree
		The terminal storage temperature	-40 degree-+70 degree
The antenna storing temperature	-40 degree-+90 degree

Claims (3)

1. vehicle mounted positioning GPS terminal is characterized in that: comprise MCU (1), jtag interface (2), reset circuit (3), crystal oscillator (5), power module (9), GPRS module (11), GPS module (12); Wherein the port of jtag interface (2) correspondence connects TCK, TDI, TDO/TDI, the RST/NMI port of MCU (1), the corresponding RST/NMI port that connects MCU (1) of the port of reset circuit (3), corresponding Xin, Xout, X2in, the X2out port that connects MCU (1) of the port of crystal oscillator (5), corresponding P3.6, P3.7, P5.0, the P5.1 port that connects MCU (1) of the port of GPRS module (11), corresponding MCU (1) P1.2, the P1.6 port of connecting of the port of GPS module (12).

2. vehicle mounted positioning GPS terminal according to claim 1 is characterized in that: comprise that also storer (4), oil-break power break (6), power supply detection (7), battery detecting (8), charging module (10) alarm detection (13), ACC detect (14), handle or display screen (15); Wherein the port of storer (4) correspondence connects the P3.0-P3.3 port of MCU (1), the corresponding P5.7 port that connects MCU (1) of the port of oil-break power break module (6), and the port correspondence of power supply detection (7) connects the P5.4 port of MCU (1); The corresponding P6.1 port that connects MCU (1) of the port of battery detecting (8); The corresponding P2.3 port that connects MCU (1) of the port of alarm detection (13); Acc detects the P5.3 mouth end of the corresponding MCU of connection of port (1) of (14); Corresponding P3.4, the P3.5 end that connects MCU of the port of handle or display screen (15).

3. vehicle mounted positioning GPS terminal according to claim 1 is characterized in that: be solidified with embedded software in described MCU (1) chip.

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