[navigation System] What are the working principles of the GBS navigation system?

Common GPS navigation systems are generally divided into five forms: mobile phone, PDA, multimedia, vehicle -mounted, notebook types.With the popularity of smartphones and mobile phones of PDA functions, the first three forms have begun to cross.In addition to the products that are integrated with the CD machine mentioned earlier, the GPS that comes with the original car of many models also belongs to this type.The convenience of notebook products has been limited in terms of use. In addition to some enthusiasts, few people use it for car navigation.

Types of GPS navigation System

1. mobile phone GPS

The Nokia series mobile phone using the S60 intelligent system is a typical representative of the mobile phone GPS navigation system.A GPS signal receiving module LD-3W is connected through the Bluetooth system (other models include LD-1W, LD-4W), and navigation operations can be performed through the navigation software in the mobile phone.

In general, the mobile navigation system is easy to carry. A small module will not become a burden at all. The price is relatively low in price than many GPS products, especially when you have a S60 phone, you only need to pay more 700 yuan more.You can get detailed navigation functions on the left and right.Of course, you can also buy a 1,500 yuan S60 mobile phone after getting a module.

2. PDA -type GPS

There are many PDA mobile phones in the market now. Dopod is a major brand. It has the functions of mobile phones and the practicality of PDA, which makes many business people feel a lot of affection for such products.After all, compared with the S60 system, whether it is the PALM system and the WindowsMobile system, the various types of software supporting are richer and the product is more functional.Of course, the navigation function of such products sometimes requires the Bluetooth GPS receiving module.

Because the PDA -type GPS is placed in the fuselage in the end of the navigation system, it is best to pay attention to the position of the body at all times. It is best to always place it under the front windshield.

3. Multimedia GPS

There are also some people who call this type of product as a car GPS. It can be understood so that they have almost no other functions except for use in the car.It is also because of the single nature of this function that can make them easier and practical.

This type of GPS also has a variety of prices according to different functions. In addition to individual low-priced or high-priced models, the main product price is concentrated in the range of 3,000-5000 yuan. The GPS navigation system in this range is also the most in the market at present the market.Mainstream.

Most car owners prefer the main reason for multimedia GPSs to be simple and easy to use.

4. Vehicle GPS, Notebook GPS

There is nothing to talk about these two products. The price of GPS integrating with the head of the machine has always been high. If it is not for higher requirements for the audio and video entertainment system itself, then choosing this system is entirely chargingBig.In addition to paying a higher price when buying a car when buying a car, the later map upgrade is also very high. Generally, a DVD map disc is nearly 1,000 yuan.

And the notebook GPS is more in a state of fever and play. Although the notebook is already small, it still cannot be fixed by a suction cup just as other products. Holding a 10 -inch guy on the car for navigation as a navigation on the car for navigation.It is not easy. It is more suitable for GPS enthusiasts to test, modify or software trials of homemade maps.

navigation system work principle

1. Orientation correction

1. Positioning

Find the location and rely on the synthetic positioning method.The method is to turn the route unit continuously with the quantity and angle.This process includes the accumulation of errors, but these errors are constantly compensated with the position of the digital map (map matching).Due to the GPS satellite positioning system, the vehicle is beyond the short -distance travel of the digital road network or after the shipping or railway transportation, the navigation system can still navigate navigable navigation without any problems.

2. Sensor

In order to find positions, two wheel sensors are often used to determine the changes in the journey and direction, and the absolute direction of traveling travel is determined by the ground magnetic sensor.

In essence, when traveling outside the range of digital maps, the GPS positioning system correction large sensor interference, or determines the revision point of the storage road network.A more modern system requires only a simple travel signal. For example, it often uses speed to determine the volume control of automobile radio.The changes in the direction are determined by a partiality sensor (gyroscope).The geomagnetic sensor is superfluous, and now it can determine the absolute direction of travel through the Doppler effect from the CP signal.

2. Receive destination

1. Name address record

Digital CD map contains name address records.Therefore, the destination can be logged in as an address. All regional catalogs (towns, villages) of all CDs can be used to find the required targets, and list the names of the storage road/street in turn.In order to further find out the destination, it is possible to find the road/street crossroads or street numbers.However, the displayed house number is still very limited, because it is necessary to clarify that the data costs too much.Some drivers rarely know the address of the destination, such as airports, railway stations, service platforms, car parking lots and more places.For this reason, the classification address records the address (POIS) that these people often care about.Use these addresses to log in or even find gas stations near the vehicle.The place where the destination is marked or calls the previously stored address on the map display is further choice.

2. Travel guide

As a reasonable development of POIS, CDS is now available as a travel guide. It is the result of joint cooperation between publishing companies and digital map manufacturers.For example: These CDSs can be used to find hotels near destinations.CDS information also includes the size, price and facilities of POIS.

Third, path calculation

1. Destination selection

It must be able to adapt to the path of the driver's hope.In many systems, optimize configuration with driving time or mileage.Path computing should be noticed at certain homework, such as avoiding highways/car highways, ferry connections and toll sections.Once the destination is determined, the initial calculation of the destination must be completed in half a minute.If the driver breaks away from the recommended path, this requires the system to re -calculate the path, and it is still fast.To select the alternative path, the driver presses the button to bypass the congestion section forward.

2. Dynamic path selection

Driving automatically through the traffic blocking area automatically, you can use RDS-TMC to encode the estimation of traffic information to achieve.This information can be received by RDS or GSM.

Fourth, path guidance

1. Decision of the path

Path guidance is achieved by comparing the current position of the vehicle to the path calculated by the computer.After a comprehensive analysis of the existing sections and the path that will continue to drive, the system can determine whether the driver must change the direction, or continue to follow the current road.

2. Recommend path and direction

Proposal and guidance in paths and directions are the first and first prompts.This allows the driver to run according to the prompt without affecting its operation.If it is possible in the scope (instrument panel) of the Lord, a simple graphic display is installed, and the driver can better grasp the direction.The conciseness of the sound and graphical indicator direction is the decisive factor of the quality of the path guidance.It is not the first choice to determine the driving direction from the display map, because it will disperse the driver's attention.

3. Dynamic path

Transportation blocking is automatically detoured by the traffic information code.This information code is silent in the traffic information channel (RDS-TMC) of the radio data system and is published parallel to the radio program.They have been included in the GSM service.

Five, map display

According to the design of the system, the map can be displayed with color monitors, and the map ratio is between 1: 8000 and 1: 16X10.Observe adjacent or farther routes according to the graphic ratio.The driver's orientation is based on the support of the background information of topography. They show that such as lakes, rivers, ditches, high -rise areas, railways and forests.

Six, road map storage

CD-ROM has become the main media of the storage road map.The storage structure of the data is the proprietary technology (confidential) of the manufacturer and significantly affect the performance of the system.For this reason, the current CDS on the market is a system of different manufacturers and is not compatible with each other.We are trying to standardize navigation CDS.

Due to the development of the digital region, the integrity of the road network and the increasing increase of additional information resources, the capacity of the CD-ROM (seemingly so huge) in the foreseeable future will be consumed.Digital universal CD (DVD), its capacity is much more than CD-ROM, and will definitely become its successor.& gt; & gt; GPS navigator ten brands

1. What is the reason why the mobile phone map navigation signal is weak

Mobile navigation prompts that the GPS signal is weak. After opening the navigation, it is always unavailable. Because the GPS signal is weak, the navigation system cannot receive the GPS satellite signal and cannot accurately determine its position.The specific reasons are:

1. Really geographical location, the base station set by the operator is too far away from you, which will affect the signal of your mobile phone.Some common objects in life such as tunnels, houses, and even leaves will block the signals, so that it will remind us to go to an open place to detect signals.

2. The mobile phone configuration is low and the performance of the receiving signal is weak.

3. High -rise buildings and dense buildings cause obstruction, etc., will cause the satellite signals received by GPS often change, and sometimes they cannot even receive satellite signals at all.

4. The GPS signal in the car in the car is weak. It may be that the car is attached to the metal film. The metal particles inside will block the electronic signal.

When the GPS signal is good, the GPS can accurately determine the location of its location by receiving the satellite signal, and the position error is less than 10 meters.If you bring a map in the machine, you can mark it with a mark on the corresponding position on the map.

2. How to solve the mobile map navigation GPS cannot be positioned

GPS cannot be positioned by many factors. The main factors are signals and motion status.In places with poor satellite signals (such as: indoor, tunnels, and urban neighborhoods in high -rise buildings), or GPS is often difficult to locate in a movement state.I suggest you:

1. Check whether the GPS function is turned on.

2. Try through network positioning (may generate traffic costs): slide the screen curtain-long press the GPS icon-enter the positioning service setting interface-positioning method-select "GPS, WLAN and mobile network" or "WLAN and mobile network" (WLAN and mobile network "(Different types of mobile phone operation methods may be slightly different).

3. If it is not effective, restart the mobile phone shutdown and restart the stars.

4. If you are still unable to locate, it is recommended to change other locations or try to try.

5. Update software version.If the navigation software cannot be positioned, update the navigation software to the latest version or try it with other navigation software.

If the above method is still unable to locate the GPS, it is recommended that you bring the purchase invoice, repair card and machine to the service center for inspection.

one, How is the map navigation voice package made?

Baidu Map

1 After logging in and entering Baidu map, if you want to start recording navigation voice packs directly, just click on the right " Voice customization " The function can start recording;

2 After entering the interface of voice recording, you can see various types of characters and style voice packages in private customization and official production columns, click on " Recording my voice " Start recording;

3 To enter the interface of the recording selection, first of all, you need to choose the corresponding gender in the female voice, male voice, childhood girls, and child voice men;

4 Then select the text content you want to record, choose according to your preferences, and select all after the selection is completed " Next step " Items

5 The software will pop up the contents of the recording. When recording, you need to recording in a particularly quiet environment. " Start recording " You can record;

6 2. After a period of noise testing, Baidu Map will detect the noise in the current scene. After the test is completed, click " Start recording " You can record your own voice pack;

7 After the voice package is recorded, if you want to view the voice recorded before, just return to the voice custom interface, in " mine " Check in the column.

How to record Gaode map navigation Vocal Package

1 As well as mobile phone download and install Gaode map,, Open the map after installation.

2 As well as Click the avatar at the top left of the map to enter the personal center page.There is a navigation voice package here.

3 As well as Open the navigation voice package, you can download various types of voice packages, and there is a good voice to record my at the bottom.

4 As well as Open and start recording, hold down the sound keys, and start recording. There are eight prompts in total.

5 As well as You can view the sound you just recorded here. If you are not satisfied, you can recording.

6 As well as record the click to save.You can name your voice.

7 As well as Then you can use your own voice under navigation language.You can hear your voice when navigation.

2. How to open the navigation map route.

mapAPP The voice prompts in the navigation are open by default. If you find that it is not open when used, you can use the following steps to perform voice settings:

1 , Open the map APP , And find the [navigation] tag at the bottom of the page, click the tag to enter the navigation setting page;

2 2. In the navigation setting page, find the [Driven Assistant] section. There are [navigation Voice] in this section. Clicking the navigation voice will open a new page.

3 The navigation voice can be set on the [navigation Voice] page.

3. How to set your own voice by the voice prompt of navigation map route

1 , Download and open the navigation map APP , Click the icon of personal information in the upper left corner.

2 Enter the personal interface and click "navigation Voice Pack".

3 Click "Recording my voice".

4 , According to the prompts of the screen, hold down the Mike below, and enter a few words inserted according to this.

5 , Complete the recording, click "Save".

6 In the pop -up dialog box, you can change the file name and click "Save".

7 You can see your own voice, click back, you can navigate and try.

[motorcycle GPS locator] motorcycle GPS anti -theft, electric vehicle GPS anti -theft device

Working method of joining the magazine motorcycle GPS anti -theft device positioner:

1. Triple positioning: GPS positioning GPSONE positioning base station positioning:

There is no blind spot for positioning throughout the journey.In the occasion where the search satellite is lower than three, the system automatically turnsgpsone Positioning, if you can't search for any satellite, you can convert to the base station positioning, that is, where there is a mobile phone signal, you can locate.

2. Vibration is the alarm, and the movement is tracking:

The system turns from static to dynamic(( Move or vibrate Cure , That is, the alarm tracking.

3.. Diversity of real -time dynamic positioning information:

a. SMS reply to the current Chinese geographic location information of the vehicle

b. Log in to the trajectory website, you can query the sports trajectory and download the sports trajectory text information.

4. 4.. Low voltage alarm:

When the product has a built -in battery low voltage, the system automatically SMS prompts the user to charge in time.

5. Electronic fence:

Anti -theft motorcycle enters or moves a certain setting area, alarm tracking

motorcycleGPS Features of anti -theft positioner:

GSM Four -frequency system global universal;

High sensitivity GPS Receive chips;

Built -in high sensitivity GPS Antenna, super receiving performance;

High integration design;

The world's only double built -in antenna (GSM ,, GPS) design vehicle terminal;

Built -in switching power supply, ultra -wide voltage input range;

Built -in vibration sensor to achieve intelligent anti -theft of vehicles;

Support ACC Detection, the vehicle starts the alarm;

It can be connected to an external relay to achieve remote control of vehicle oil and electricity;

Can be set up 3 A specific number is used for SOS Alarm and anti -theft alarm;

Can be connected SOS The alarm button is used for emergency call for help;

You can connect the microphone to achieve remote voice monitoring function;

Built -in spare battery to realize illegal cutting alarms;

Compatible with external device serial communication.

At present, motorcycle anti -theft methods are mainly to install various anti -theft locks and configuration sound -light alarms, but these are not difficult to get theft gangs, and vehicles cannot be tracked. Society urgently needs a new way to prevent theft and the theft of theft.motorcycle anti -theft technology to change the status quo. This is the motorcycle GPS anti -theft device positioner. The motorcycle GPS anti -theft alarm tracker reminds the owner in time during the thief's theft of the vehicle.Tracks, recover vehicles, and assist public security organs to catch criminals.

Electric carGPS Anti -theft device introduces electric vehicles GPS The anti -theft device is specially designed for electric vehicle motorcycles GPS anti -theft alarm tracker, with a variety of product forms, divided into installation types and free installation types. It has strong concealment, high safety, and working on all day.After being stolen, he could recover the stolen vehicle and capture criminals, which won the love of the majority of electric vehicle owners.

Four special features Besides

1. 1. Add Chinese SMS address reply function (( hair DW SMS to the traffic card mobile phone number in the machine, it will automatically return to the Chinese address Cure

2. Intelligent electricity saving. When the car is still, the machine will enter a dormant state, almost no longer consume power, and no longer worry about the power consumption of electricity when the car is not used for a long time, green and environmentally friendly.

3.. The positioning accuracy is higher, and the enhanced data processing is more accurate. It is adopted GPS Global satellite positioning data accurate positioning error accuracy can reach 10 About rice (( There are many more on the market 100 The positioner that is not available, most of this positioner is GSM Base station positioning equipment Cure

4. mobile phone mobile positioning, mobile phone check -up software supports smartphones in real -time mobile monitoring trajectory and other operations, convenient and fast