CN212022479U

CN212022479U - Vehicle body distance measuring and positioning device

Info

Publication number: CN212022479U
Application number: CN202020643845.3U
Authority: CN
Inventors: 钱晖; 董国栋
Original assignee: Wetron Electronic Technology Suzhou Co ltd
Current assignee: Wetron Electronic Technology Suzhou Co ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-11-27
Anticipated expiration: 2030-04-24

Abstract

The utility model relates to a car body range finding and positioner, including a key end BLE module and electric connection's a BLE control module, a first BLE module, a second BLE module, a third BLE module, a fourth BLE module and an on-vehicle ECU module, all be equipped with BLE positioning antenna on key end BLE module, BLE control module, first BLE module, second BLE module, third BLE module and the fourth BLE module, key end BLE module transmission signal gives BLE control module, BLE control module starts on-vehicle ECU module and the transmission signal gives first BLE module, second BLE module, third BLE module and fourth BLE module, BLE control module judges key end BLE module position to control on-vehicle ECU module to drive vehicle to key end module department. This automobile body range finding and positioner has the improvement positioning accuracy, reduces automobile body antenna quantity, reduces the key volume, improves advantages such as market competition.

Description

Vehicle body distance measuring and positioning device

Technical Field

The utility model relates to the technical field of vehicles, especially a car body range finding and positioner.

Background

Currently, vehicles in the market mostly adopt Received Signal Strength indicator RSSI (Received Signal Strength Indication) for positioning and distance measurement, which is a method of calculating the relative distance between a key and a low-frequency antenna in a vehicle according to the attenuation degree of a Received low-frequency Signal, and positioning the spatial position of the key relative to a vehicle body through the cross coverage range of a plurality of low-frequency antennas. With the higher degree of intelligence in automobile development, a device based on BLE (Bluetooth Low Energy) ranging technology is gradually developed.

The prior art has the following defects: the number of low frequency wireless antennas used by the automobile body is large, the positioning accuracy and distance are increased, remote control parking and automatic welcome places are not facilitated to use, and the size of an automobile key is large.

Therefore, a vehicle body distance measuring and positioning device is developed to solve the defects.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is in order to overcome prior art not enough and provide a vehicle body range finding and positioner, has the improvement positioning accuracy, reduces vehicle body antenna quantity, reduces the key volume, improves advantages such as market competition.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a vehicle body distance measuring and positioning device comprises a key end BLE module, a BLE control module, a first BLE module, a second BLE module, a third BLE module, a fourth BLE module and a vehicle-mounted ECU module which are electrically connected with the BLE control module, a BLE positioning antenna is arranged on each of the key tip BLE module, the BLE control module, the first BLE module, the second BLE module, the third BLE module and the fourth BLE module, the key fob BLE module transmitting a signal to the BLE control module, the BLE control module activating an in-vehicle ECU module and transmitting an electrical signal to the first, second, third, and fourth BLE modules, the BLE control module determining the key fob BLE module position, and controlling the vehicle-mounted ECU module to drive the vehicle to the key end BLE module.

Preferably, the key-tip BLE module is disposed within a small car key.

Preferably, the BLE control module is arranged at a center console of the automobile.

Preferably, the first BLE module and the second BLE module are disposed at two corners of the front end of the automobile.

Preferably, the third BLE module and the fourth BLE module are disposed at two corners of a rear end of the automobile.

Preferably, the BLE positioning antenna of the key end BLE module is associated with the BLE positioning antenna of the BLE control module.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

1. the BLE signal positioning precision of the vehicle body distance measuring and positioning device is high and can reach the centimeter level;

2. the low-frequency antenna is replaced by the vehicle body BLE positioning antenna array, so that the number of vehicle body antennas is reduced;

the BLE signal frequency band is globally applicable and free to use;

4. the key based on BLE technology is smaller and more portable;

5. the function of having expanded current key promotes the market competitiveness of vehicle.

Drawings

Figure 1 is the utility model discloses vehicle body range finding and positioner's connection schematic diagram.

Wherein: 1. a key-end BLE module; 2. a BLE control module; 3. a first BLE module; 4. a second BLE module; 5. a third BLE module; 6. a fourth BLE module; 7. and an in-vehicle ECU module.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In fig. 1, a vehicle body distance measuring and positioning device includes a key-end BLE module 1, a BLE control module 2, and a first BLE module 3, a second BLE module 4, a third BLE module 5, a fourth BLE module 6 and a vehicle-mounted ECU module 7 electrically connected to the BLE control module 2.

The key fob BLE module 1, the BLE control module 2, the first BLE module 3, the second BLE module 4, the third BLE module 5 and the fourth BLE module 6 are all provided with BLE positioning antennas. The BLE positioning antenna of the key end BLE module 1 is associated with the BLE positioning antenna of the BLE control module 2. The key-end BLE module 1 is arranged in a small vehicle key. The BLE control module 2 is arranged at an automobile center console. The first BLE module 3 and the second BLE module 4 are disposed at two corners of the front end of the automobile. The third BLE module 5 and the fourth BLE module 6 are disposed at two corners of the rear end of the vehicle.

The key fob BLE module 1 transmits a signal to the BLE control module 2, and the BLE control module 2 activates the on-board ECU module 7 and transmits an electrical signal to the first BLE module 3, the second BLE module 4, the third BLE module 5, and the fourth BLE module 6. The BLE control module 2 judges the position of the key end BLE module 1, and the BLE control module 2 controls the vehicle-mounted ECU module 7 to drive the vehicle to the position of the key end BLE module 1.

This automobile body range finding and positioner comprises vehicle key module, automobile body BLE signal processing module, and the key feature is as follows:

1. the key fob BLE module 1 transmits a BLE signal.

2. The BLE control module 2 of the vehicle body calculates the arrival angle of the signal through the phase difference of the signal received by the BLE positioning antenna array.

3. And calculating the distance by a software algorithm according to the arrival angle and the fixed distance of the antenna array and positioning.

4. The BLE control module 2 of the vehicle body throws the result to the vehicle-mounted ECU module 7 of the vehicle body through a CAN/LIN communication line to drive a corresponding door lock or a welcome lamp.

5. And under the parking mode, calculating the position in real time, and controlling the vehicle to move according to the command under the parking mode.

The utility model discloses reduce the quantity of the wireless antenna of automobile body, increase positioning accuracy and distance to realize that the remote control parks, automatic usher's function, and further reduce the key size.

The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims

1. The utility model provides a car body range finding and positioner which characterized in that: comprises a key end BLE module (1), a BLE control module (2), a first BLE module (3), a second BLE module (4), a third BLE module (5), a fourth BLE module (6) and a vehicle-mounted ECU module (7) which are electrically connected with the BLE control module (2), wherein the key end BLE module (1), the BLE control module (2), the first BLE module (3), the second BLE module (4), the third BLE module (5) and the fourth BLE module (6) are all provided with BLE positioning antennae, the key end module (1) transmits signals to the BLE control module (2), the BLE control module (2) starts the vehicle-mounted ECU module (7) and transmits electric signals to the first BLE module (3), the second BLE module (4), the third BLE module (5) and the fourth BLE module (6), the BLE control module (2) judges the position of the key end BLE module (1) and controls the vehicle-mounted ECU module (7) to drive the vehicle to the key end BLE module (1).

2. The vehicle body ranging and positioning device according to claim 1, wherein the key-tip BLE module (1) is arranged in a small vehicle key.

3. The vehicle body ranging and positioning device according to claim 1, wherein the BLE control module (2) is provided at a vehicle center console.

4. The vehicle body ranging and positioning device according to claim 1, wherein the first BLE module (3) and the second BLE module (4) are arranged at two corners of the front end of the vehicle.

5. The body ranging and locating device according to claim 1, characterized in that said third BLE module (5) and said fourth BLE module (6) are arranged at two corners of the rear end of the car.

6. Vehicle body ranging and positioning device according to claim 1, characterized in that the BLE positioning antenna of said key-tip BLE module (1) is associated with the BLE positioning antenna of said BLE control module (2).