阅读说明：本技术 一种基于多个蓝牙模块的车辆定位系统及方法 (Vehicle positioning system and method based on multiple Bluetooth modules ) 是由 刘佳晖 李子男 利文浩 于 2021-09-10 设计创作，主要内容包括：本发明涉及一种基于多个蓝牙模块的车辆定位系统及方法,该系统包括至少两个蓝牙模块,包括一个车内蓝牙模块和至少一个车外蓝牙模块,所述的车内蓝牙模块和车外蓝牙模块相互辅助完成精准的蓝牙定位。与现有技术相比,本发明具有定位准确、赋予车辆的用户体验比较好等优点。(The invention relates to a vehicle positioning system and a vehicle positioning method based on a plurality of Bluetooth modules. Compared with the prior art, the method has the advantages of accurate positioning, better user experience of the vehicle and the like.)

1. The utility model provides a vehicle positioning system based on a plurality of bluetooth module, its characterized in that includes two at least bluetooth module, including bluetooth module and at least one car outer bluetooth module in the car, car inner bluetooth module and car outer bluetooth module mutually assist and accomplish accurate bluetooth location.

2. The system of claim 1, wherein there are two external bluetooth modules and the two external bluetooth modules are symmetrically disposed.

3. The system of claim 2, wherein two of said extra-vehicle bluetooth modules are disposed on the door handles of the vehicle owner and the vehicle assistant.

4. The system of claim 2, wherein two of said off-board bluetooth modules are disposed on door handles of two rear doors.

5. The system of claim 1, further comprising a trunk bluetooth module.

6. The system of claim 5, wherein the vehicle trunk Bluetooth module is disposed outside the trunk.

7. A positioning method for a vehicle positioning system based on a plurality of Bluetooth modules as claimed in claim 1, characterized in that the method takes the Bluetooth module in the vehicle as the main Bluetooth module, the main Bluetooth module is connected with the mobile phone Bluetooth, the mobile phone Bluetooth transmits RSSI signal to the main Bluetooth module in real time, the main Bluetooth module and other Bluetooth modules exchange messages and combine the positioning algorithm to perform positioning operation, and the positioning operation result is sent to the mobile phone Bluetooth.

Technical Field

The invention relates to a Bluetooth positioning technology in the field of automobiles, in particular to a vehicle positioning system and method based on a plurality of Bluetooth modules.

Background

The bluetooth positioning technology is an extremely advanced skill standard of large-capacity near-interval wireless digital communication, and the guideline thereof is to finish the highest data transmission speed of 1Mbps (useful transmission speed of 721Kbps) and the maximum transmission interval of 10 cm-10 m, and the transmission power can reach 100 m by adding. The transceiver can use 2.4GHz ISM (industrial, scientific and medical) frequency band without request, 79 channels with 1MHz frequency band are set on the ISM frequency band, the transceiver finishes the transceiving of electric waves by frequency of 1600 times per second and frequency spectrum diffusion skill of a hobbing mode, and can support synchronous communication and asynchronous communication together.

The application prospect of the Bluetooth positioning technology on the electronic equipment of the car is very good. Initially, bluetooth positioning skills were first applied to the phone. But more service supply, long-distance vehicle condition diagnosis, vehicle safety system, vehicle-to-vehicle communication, multimedia downloading and the like can be finished later.

However, the existing vehicle bluetooth positioning scheme is a single bluetooth deployment scheme, and only one bluetooth module is deployed in the vehicle, which has the following problems:

1) the positioning effect is poor: single module bluetooth deployments result in the vehicle being unable to complete a position fix after being heavily occluded.

2) Weak positioning signals: and a single module has weak signals, and cannot finish accurate positioning.

Disclosure of Invention

The present invention is directed to a vehicle positioning system and method based on a plurality of bluetooth modules, which overcome the above-mentioned drawbacks of the prior art.

The purpose of the invention can be realized by the following technical scheme:

according to one aspect of the invention, the vehicle positioning system based on the plurality of Bluetooth modules comprises at least two Bluetooth modules, wherein each Bluetooth module comprises an in-vehicle Bluetooth module and at least one out-vehicle Bluetooth module, and the in-vehicle Bluetooth module and the out-vehicle Bluetooth module mutually assist to complete accurate Bluetooth positioning.

As the preferred technical scheme, the number of the Bluetooth modules outside the vehicle is two, and the Bluetooth modules are symmetrically arranged.

As the preferred technical scheme, the two external Bluetooth modules are arranged on door handles of a vehicle owner and a vehicle assistant.

As a preferable technical scheme, the two out-of-vehicle Bluetooth modules are arranged on the door handles of the two rear doors.

As a preferable technical scheme, the positioning system further comprises a trunk Bluetooth module.

As a preferable technical scheme, the Bluetooth module of the car trunk is deployed outside the trunk.

According to another aspect of the invention, a positioning method for the vehicle positioning system based on the plurality of Bluetooth modules is provided, the method takes the Bluetooth module in the vehicle as a main Bluetooth module, the main Bluetooth module is connected with the mobile phone Bluetooth, the mobile phone Bluetooth transmits an RSSI signal to the main Bluetooth module in real time, the main Bluetooth module and other Bluetooth modules perform message interaction and positioning operation by combining a positioning algorithm, and a positioning operation result is sent to the mobile phone Bluetooth.

Compared with the prior art, the invention has the following advantages:

1) the vehicle can be deployed at a plurality of positions, so that the equipment-to-vehicle positioning without dead angles can be completely visited, the positioning is accurate, the user experience given to the vehicle is better, and more personalized scene experiences can be realized on the basis of the vehicle;

2) the invention covers the signal more completely, covers the whole vehicle and also makes better preparation for judging the objects of the vehicle body accessories.

Drawings

FIG. 1 is a schematic deployment diagram of the system of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

Example 1

As shown in figure 1, the vehicle positioning system based on the plurality of Bluetooth modules comprises at least two Bluetooth modules, including an in-vehicle Bluetooth module and at least one out-vehicle Bluetooth module, wherein the in-vehicle Bluetooth module and the out-vehicle Bluetooth module mutually assist to complete accurate Bluetooth positioning.

Preferably, the number of the Bluetooth modules outside the vehicle is two, and the Bluetooth modules are symmetrically arranged.

As an implementation mode, the two external Bluetooth modules are arranged on door handles of a vehicle owner and a vehicle assistant.

In another embodiment, two of the described bluetooth modules outside the vehicle are disposed on the door handles of two rear doors.

Meanwhile, the invention also provides a positioning method for the vehicle positioning system based on the plurality of Bluetooth modules.

Example 2

The positioning system further comprises a trunk Bluetooth module, and the trunk Bluetooth module is deployed outside the trunk. Through the bluetooth module behind the left and right to and a module cell-phone in the car can pinpoint the equipment in the left side of car, the right, rear limit isoposition, accurate positioning can be accomplished to such module overall arrangement, and the all-round location of energized vehicle is experienced.

According to the invention, the four positions are deployed, so that the equipment-to-vehicle positioning without dead angles can be completely visited, the positioning is accurate, the user experience given to the vehicle is better, and more personalized scene experiences can be realized on the basis of the vehicle. The invention covers the signal more completely, covers the whole vehicle and also makes better preparation for judging the objects of the vehicle body accessories.

Example 3

The invention also comprises a vehicle positioning method based on a plurality of Bluetooth modules, which takes the Bluetooth module in the vehicle as a main Bluetooth module, the main Bluetooth module is connected with the mobile phone Bluetooth, the mobile phone Bluetooth transmits the RSSI signal to the main Bluetooth module in real time, the main Bluetooth module and other Bluetooth modules exchange messages and combine a positioning algorithm to perform positioning operation, and the positioning operation result is sent to the mobile phone Bluetooth;

the positioning algorithm comprises the following specific processes:

based on the principle of triangulation, the position is solved according to different scenes by using a circle with three Bluetooth modules as centers.

The specific principle is as follows:

the radius of the three circles finally obtains the intersection point of the three circles, thereby achieving the positioning effect.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.