CN106274688B - A kind of auto navigation and automobile information display system and implementation method - Google Patents

A kind of auto navigation and automobile information display system and implementation method Download PDF

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Publication number
CN106274688B
CN106274688B CN201610671436.2A CN201610671436A CN106274688B CN 106274688 B CN106274688 B CN 106274688B CN 201610671436 A CN201610671436 A CN 201610671436A CN 106274688 B CN106274688 B CN 106274688B
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navigation
vehicle
message
information
direction information
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CN201610671436.2A
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Chinese (zh)
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CN106274688A (en
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刘用维
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深圳市车生活科技有限公司
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Abstract

The invention discloses a kind of auto navigation and automobile information display method, that is, system, method includes the following steps: that vehicle-mounted middle control unit changes according to navigation position, obtains navigation direction information;The transformat and transmission data of the navigation direction information are set according to message queue mechanism, and navigation direction information is transferred to from vehicle GPS end by display layer according to frequency and is shown;The transformat includes at least message id and message body.System, comprising: acquisition module, message transmission module and display module.The present invention realizes that one kind can reduce operating frequency of bowing, the access of effective wireless network, the efficient auto navigation of data transmission and automobile information display system by changing protocol mechanisms and on-vehicle information display mode.

Description

A kind of auto navigation and automobile information display system and implementation method

Technical field

The present invention relates to automobile assistant driving system, in particular to a kind of auto navigation and automobile information display system and Implementation method.

Background technique

With the development of modern science and technology, automobile industry just increasingly becoming the most intensive field of application of electronic technology it One, relevant expert predicts that the electronic device cost of dress on future automobile will account for 15% or more of vehicle complete vehicle cost, makes automobile Really become so-called " electronic car ", therefore, automotive electronics will be following new economic growth hot spot.

Automobile assistant driving system mainly may include the display of auto navigation and automobile information, and vehicle mounted guidance is by navigating Host and navigation display terminal two parts composition, cooperate electronic map to carry out using vehicle GPS (global positioning system), It can conveniently and accurately tell driver to go to the most short or the fastest path of destination.Vehicle mounted guidance generally comprises: GPS Navigation, satellite accurate positionin, optional path searching, automatic speech prompting, a variety of purpose inputs of navigation mode, national maps connect Enter, path planning, voice prompting, Music Appreciation, the functions such as file management.

The display of automobile information relies primarily on OBD interface, the information such as display speed, engine speed.OBD is English On- The abbreviation of Board Diagnostic, translator of Chinese are " onboard diagnostic system ".This system monitors the operation of engine at any time The working condition of situation and exhaust gas aftertreatment system can issue police once discovery is possible to cause to discharge exceeded situation at once Show.When system breaks down, emergency warning lamp is bright, while OBD system for trouble light (MIL) or inspection engine (Check Engine) Fault message can be stored in memory, the diagnostic instrments of standard and diagnose interface can be read in the form of error code it is related Information.According to the prompt of error code, maintenance personal can quickly and accurately determine property and the position of failure.

The defect of auto navigation and automobile information display system in the prior art is:

1) it due to screen placement position when automobile information is shown mostly, needs driver frequently to bow, be easy to cause driving Security risk.

2) in-vehicle navigation apparatus mostly, the Android vehicle mounted guidance that present manufacturers publicize all is from the Android system on mobile phone System reference, does not support third party software to download, cannot be independently connected internet.

3) for the reaction speed of car navigation device compared with slow, message transmission rate is low, user experience is poor.

Summary of the invention

The technical problem to be solved by the present invention is to realize by changing protocol mechanisms and on-vehicle information display mode One kind can reduce operating frequency of bowing, the access of effective wireless network, the efficient auto navigation of data transmission and automobile information and show System.

Above-mentioned technical problem is solved, the present invention provides a kind of auto navigation and automobile information display method, including it is as follows Step:

Vehicle-mounted middle control unit changes according to navigation position, obtains navigation direction information;

According to message queue mechanism set it is described navigation direction information transformat and transmission data, and according to frequency from Navigation direction information is transferred to display layer and shown by vehicle GPS end;

The transformat includes at least message id and message body.

Further, the message queue mechanism is the WM_COPYDATA in WinCE operating system.

Further, message id MSG_ID_GUIDANCEINFO.

Further, the message body include: size of data, turn direction, distance when pre-induction point distance, apart from mesh Ground distance, the time apart from destination, present road title, next road name, current vehicle speed, current GPS angle.

Further, it is described according to frequency from vehicle GPS end will navigate direction information be transferred to display layer show into One step are as follows: send the direction information under a current state every 3S;And if direction information changes, and sends one immediately It is secondary.

Based on above-mentioned, the present invention also provides a kind of auto navigation and automobile information display systems, comprising:

Acquisition module obtains navigation direction information to change in vehicle-mounted middle control unit according to navigation position;

Message transmission module, to set transformat and the transmission of the navigation direction information according to message queue mechanism Data, and navigation direction information is transferred to from vehicle GPS end by display layer according to frequency, the transformat includes at least message ID and message body;

Display module is shown to the information according to the posting of the message body in display layer.

It further, further include return value module, to the reception according to the navigation direction information in message transmission module Situation, feedback: message body mistake is properly received message.

Further, the display module, the navigation route information obtained to show parsing navigation direction information;It is described Display module keeps head-up sight with the sight of driver.

Further, further include wireless module, to provide WI-FI access AP, provide linking Internet interface;And it mentions For bluetooth, for keeping connecting with the mobile intelligent terminal.

It further, further include supplementary module, the supplementary module includes: camera unit, sensor unit, audio list Member, video unit,

The camera unit is connect with vehicle-mounted middle control unit, image information when recording driving and reversing,

The sensor unit is connect with vehicle-mounted middle control unit, to monitor real-time induction information,

The audio unit is connect with vehicle-mounted middle control unit, to receive voice operating instruction, and broadcasting audio file;

The video unit is connect with vehicle-mounted middle control unit, to play the video in memory body or pass through wireless access The video downloaded after to internet.

Beneficial effects of the present invention:

1) auto navigation and automobile information display method in the present invention, wherein vehicle-mounted middle control unit becomes according to navigation position Change, obtains navigation direction information;The transformat and transmission data of the navigation direction information are set according to message queue mechanism, And navigation direction information is transferred to from vehicle GPS end by display layer according to frequency and is shown;The transformat includes at least Message id and message body.The rate for effectively increasing data transmission, allows auto navigation reaction speed to become faster, and automobile information is aobvious Show more comprehensively.

2) auto navigation and automobile information display system in the present invention, since display module is to show that parsing navigation turns The navigation route information obtained to information;The display module keeps head-up sight with the sight of driver.Reduce driver It frequently bows, reduces traffic safety hidden danger.

3) auto navigation and automobile information display system in the present invention, including wireless module, to provide WI-FI access AP, and connection is established with mobile intelligent terminal in the car.It is capable of providing WIFI hot spot, allows interior mobile intelligent terminal and the heat Point establish connection, thus realize access internet uploaded information with it is synchronous.

Detailed description of the invention

Fig. 1 is auto navigation and automobile information display method flow diagram in one embodiment of the invention.

Fig. 2 is auto navigation and automobile information display system structural schematic diagram in one embodiment of the invention.

Fig. 3 is auto navigation and automobile information display system structural schematic diagram in one embodiment of the present invention.

Specific embodiment

To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference Attached drawing, the present invention is described in more detail.

Fig. 1 is auto navigation and automobile information display method flow diagram in one embodiment of the invention.

A kind of auto navigation and automobile information display method in the present embodiment, include the following steps:

The vehicle-mounted middle control unit of S101 changes according to navigation position, obtains navigation direction information;Those skilled in the art can It is illustrated, the vehicle-mounted middle control unit includes car-mounted display and interior CAN bus agreement.It can basis by vehicle GPS unit Navigation direction information is input to vehicle-mounted middle control unit by navigation.

S102 sets the transformat and transmission data of the navigation direction information according to message queue mechanism, and according to frequency Navigation direction information is transferred to display layer from vehicle GPS end and shown by rate;Preferably, the message queue mechanism is WM_COPYDATA in WinCE operating system, this agreement select the message queue mechanism based on Windows as this agreement Communication mechanism.Therefore the windows messaging function used is SendMessage;It the use of the windows messaging arrived is WM_ COPYDATA;It the use of the Windows structural body arrived is COPYDATASTRUCT.The definition of this protocol message structure is to be based on COPYDATASTRUCT structural body.WinCE operating system is the operation system of message-driven as Windows operating system It unites, there is complete message queue to realize in system.The transmitting of message can both carry out between each thread inside process, It can be carried out between different processes.The windows messaging of the overwhelming majority can only carry a small amount of information, and the meaning of information is Through providing.But have a windows messaging: WM_COPYDATA can carry out the transmitting of mass data, specially be designed to Transmit mass data.

Transformat described in S103 includes at least message id and message body, wherein the message id is MSG_ID_ GUIDANCEINFO, the message body include: size of data, turn direction, distance when pre-induction point distance, apart from destination Distance, the time apart from destination, present road title, next road name, current vehicle speed, current GPS angle.As this It is preferred in embodiment, it is described to be transferred to display layer from the vehicle GPS end direction information that navigate according to frequency and show into one Step are as follows: send the direction information under a current state every 3S;And if direction information changes, and sends one immediately It is secondary.

Auto navigation and automobile information display method in the present embodiment, wherein vehicle-mounted middle control unit becomes according to navigation position Change, obtains navigation direction information;The transformat and transmission data of the navigation direction information are set according to message queue mechanism, And navigation direction information is transferred to from vehicle GPS end by display layer according to frequency and is shown;The transformat includes at least Message id and message body.The rate for effectively increasing data transmission, allows auto navigation reaction speed to become faster, and automobile information is aobvious Show more comprehensively.

Fig. 2 is auto navigation and automobile information display system structural schematic diagram in one embodiment of the invention.

One of the present embodiment auto navigation and automobile information display system, comprising:

Acquisition module 1 obtains navigation direction information to change in vehicle-mounted middle control unit according to navigation position;

Message transmission module 2, to set the transformat and biography of the navigation direction information according to message queue mechanism Transmission of data, and navigation direction information is transferred to from vehicle GPS end by display layer according to frequency, the transformat, which includes at least, to disappear Cease ID and message body;

Display module 3 is shown to the information according to the posting of the message body in display layer.

In addition auto navigation and automobile information display system in the present embodiment, not limiting to is WINCE system Android system It may be implemented, wherein the unlimited platform of instruction of CAN protocol.

As preferred in the present embodiment, system further includes return value module, to according to leading in message transmission module The reception condition of boat direction information, feedback: message body mistake is properly received message.

As preferred in the present embodiment, the display module, to show the navigation for parsing navigation direction information and obtaining Routing information;The display module keeps head-up sight with the sight of driver, reduces driver and frequently bow, reduce row Vehicle security risk.

As preferred in the present embodiment, the message body includes: size of data, turn direction, distance when pre-induction point Distance, the distance apart from destination, the time apart from destination, present road title, next road name, current vehicle speed, Current GPS angle.It is described to be transferred to according to frequency from the vehicle GPS end direction information that navigate as preferred in the present embodiment Display layer show further are as follows: sends the direction information under a current state every 3S;And if direction information occurs Change, then sends immediately primary.

Wherein,

The size of data is according to knot unit.

The turn direction value range is 0-6, and specifically, 0 is straight trip, and 1 is right front, and 2 is to the right, 3 are right back, 4 be u-turn, and 5 is to the left, 6 are left front.- 1 indicates invalid, temporarily without direction information.

The distance that the distance is selected when pre-induction, the distance apart from destination unit of account be rice, it is described apart from purpose The unit of account of the time on ground is wonderful.

The present road title, is encoded using Unicode, if when NULL, then it represents that present road is without title.

Next road name, is encoded using Unicode, if when NULL, then it represents that next road is without title.

The measurement unit of the current vehicle speed is KM/H.

The current GPS angle are as follows: current GPS angle, using due north as prime direction, the angle that rotates clockwise.

Fig. 3 is auto navigation and automobile information display system structural schematic diagram in one embodiment of the present invention.

Auto navigation and automobile information display system in the present embodiment comprising following structure:

Acquisition module 1 obtains navigation direction information to change in vehicle-mounted middle control unit according to navigation position;Message passes Module 2 is passed, to set the transformat and transmission data of the navigation direction information according to message queue mechanism, and according to frequency Navigation direction information is transferred to display layer from vehicle GPS end by rate, and the transformat includes at least message id and message body;It is aobvious Show module 3, to the information according to the posting of the message body, is shown in display layer.As preferred in the present embodiment, System further includes supplementary module, and the supplementary module includes: camera unit 4, sensor unit 5, audio unit 6, video list Member 7,

Camera Unit 4 is connect with vehicle-mounted middle control unit, and image information when recording driving and reversing is taken the photograph As first 4 can also include preposition camera, (can be used for LDW Lane Departure Warning System, PCW row to record running information The driving safeties miscellaneous function such as people's anti-collision warning.), front license plate, front vehicles image (can be used for before FCW to anti-collision early warning system System) and postposition camera, to record image information when reversing.

As preferred in the present embodiment, auto navigation and automobile information display system further include wireless module, to mention AP is accessed for WI-FI, and establishes connection with mobile intelligent terminal in the car.It is capable of providing WIFI hot spot, allows interior mobile intelligence Can terminal and the hot spot establish connection, thus realize the uploaded information of access internet with it is synchronous.

The sensor unit 5 is connect with vehicle-mounted middle control unit, to monitor real-time induction information, sensor unit 5 Including but not limited to: direction sensor, acceleration transducer, GPS, temperature sensor and geomagnetic sensor, the temperature pass Sensor to incude interior temperature and radiate, use to detection direction, the direction sensor by the geomagnetic sensor To judge vehicle advance or the direction fallen back and test running car distance, system of the acceleration transducer to vehicle Dynamic, starting detection, the GPS is to position vehicle location and map access.

The audio unit 6 is connect with vehicle-mounted middle control unit, to receive voice operating instruction, and broadcasting audio text Part;

The video unit 7 is connect with vehicle-mounted middle control unit, to play video in memory body or by wirelessly connecing The video downloaded after entering to internet.

As preferred in the present embodiment, system further includes wireless module 8, to provide WI-FI access AP, provides interconnection Net access interface;And bluetooth is provided, for keeping connecting with the mobile intelligent terminal.

Preferably, the supplementary module can also include: ADAS intelligent driving auxiliary system.The rearview camera of ADAS, Rear-camera head system can help driver to find the object or person person after vehicle, to move backward simultaneously in the case where ensuring safety Smooth parking.High dynamic range (HDR) camera of 1,000,000 pixels is disposed in advanced system, and passes through unmasked multiple twin Line realizes the high speed Ethernet connection and video compress of high performance-price ratio.Other systems require to include physical layer interface and electricity appropriate Source.Intelligent back vision camera can analyze video content in local, to realize that object and pedestrian are detected.In addition, they are also Support comprehensive local image procossing and Graphics overlay creation.They can measure object distance, and trigger brake regulation.It is this Function can help driver safety to move backward, them is facilitated to stop into parking stall.The forward sight camera of ADAS, in order to provide deviation Alert (LDW), automated lane keeps auxiliary (LKA), high beam/dipped headlight control and Traffic Sign Recognition (TSR).

In the message transmission module 2 according to message queue mechanism set it is described navigation direction information transformat and Data are transmitted, and navigation direction information is transferred to from vehicle GPS end by display layer according to frequency and is shown;Preferably, described Message queue mechanism is the WM_COPYDATA in WinCE operating system, this agreement selects the message queue machine based on Windows It is made as the communication mechanism of this agreement.Therefore the windows messaging function used is SendMessage;Use what is arrived Windows messaging is WM_COPYDATA;It the use of the Windows structural body arrived is COPYDATASTRUCT.This protocol message structure Definition be based on COPYDATASTRUCT structural body.WinCE operating system is that message is driven as Windows operating system Dynamic operating system has in system complete message queue to realize.The transmitting of message both can each thread inside process Between carry out, can also be carried out between different processes.The windows messaging of the overwhelming majority can only carry a small amount of information, and The meaning of information is it has been specified that good.But have a windows messaging: WM_COPYDATA can carry out the transmitting of mass data, Specially it is designed to transmitting mass data.

More than it should be understood by those ordinary skilled in the art that:, described is only specific embodiments of the present invention, and It is not used in the limitation present invention, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done, It should be included within protection scope of the present invention.

Claims (3)

1. a kind of auto navigation and automobile information display method, it is characterised in that include the following steps:
Vehicle-mounted middle control unit changes according to navigation position, obtains navigation direction information;
The transformat and transmission data of the navigation direction information are set according to message queue mechanism, and according to frequency from vehicle-mounted Navigation direction information is transferred to display layer and shown by the end GPS;
The transformat includes at least message id and message body;
The message queue mechanism is the WM_COPYDATA in WinCE operating system;
Message id is MSG_ID_GUIDANCEINFO;
The message body include: size of data, turn direction, distance when the distance of pre-induction point, the distance apart from destination, away from From the time of destination, present road title, next road name, current vehicle speed, current GPS angle;
It is described to be transferred to display layer from the vehicle GPS end direction information that navigate according to frequency and show further are as follows: every 3S Send the direction information under a current state;And if direction information changes, and sends immediately primary.
2. a kind of auto navigation and automobile information display system, which is characterized in that for executing side as described in claim 1 Method, the system comprises:
Acquisition module obtains navigation direction information to change in vehicle-mounted middle control unit according to navigation position;
Message transmission module, to set the transformat and transmission number of the navigation direction information according to message queue mechanism According to, and navigation direction information is transferred to from vehicle GPS end by display layer according to frequency, the transformat includes at least message id And message body;
Display module is shown to the information according to the posting of the message body in display layer;
The display module, the navigation route information obtained to show parsing navigation direction information;The display module, and drives The sight for the person of sailing keeps head-up sight;
Further include wireless module, to provide WI-FI access AP, provides linking Internet interface;And provide bluetooth, for Mobile intelligent terminal keeps connection;
It further include supplementary module, the supplementary module includes: camera unit, sensor unit, audio unit, video unit,
The camera unit is connect with vehicle-mounted middle control unit, image information when recording driving and reversing,
The sensor unit is connect with vehicle-mounted middle control unit, to monitor real-time induction information,
The audio unit is connect with vehicle-mounted middle control unit, to receive voice operating instruction, and broadcasting audio file;
The video unit is connect with vehicle-mounted middle control unit, to play the video in memory body or pass through wireless access to mutually The video downloaded after networking.
3. auto navigation according to claim 2 and automobile information display system, which is characterized in that further include return value mould Block, to the reception condition according to the navigation direction information in message transmission module, feedback: message body mistake is properly received and disappears Breath.
CN201610671436.2A 2016-08-15 2016-08-15 A kind of auto navigation and automobile information display system and implementation method CN106274688B (en)

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