CN112078486A - Steering auxiliary device and method based on HUD display - Google Patents
Steering auxiliary device and method based on HUD display Download PDFInfo
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- CN112078486A CN112078486A CN202010880333.3A CN202010880333A CN112078486A CN 112078486 A CN112078486 A CN 112078486A CN 202010880333 A CN202010880333 A CN 202010880333A CN 112078486 A CN112078486 A CN 112078486A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
- B60R2300/30—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of image processing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
- B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
- B60R2300/804—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for lane monitoring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
- B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
- B60R2300/8073—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for vehicle security, e.g. parked vehicle surveillance, burglar detection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
- B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
- B60W2050/146—Display means
Abstract
The invention discloses a steering auxiliary device and a method based on HUD display, which relate to the technical field of automobile steering auxiliary devices, and particularly comprise an acquisition module and HUD equipment, wherein the HUD equipment comprises an MCU (microprogrammed control unit), a CAN (controller area network) transceiver module, an image buffer module and a TFT (thin film transistor) display screen.
Description
Technical Field
The invention relates to the technical field of automobile steering auxiliary devices, in particular to a steering auxiliary device and method based on HUD display.
Background
On the way of normal driving, if the driver need change the way or turn to, need observe side rear road conditions through traditional rear-view mirror to cause the sight to deviate from driving direction temporarily, cause the driving risk, if there is emergency in the place ahead, the driver then can't in time discover, thereby lead to the emergence of accident.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a steering assist device and a steering assist method based on HUD display.
The specific technical scheme is as follows:
the utility model provides a turn to auxiliary device based on HUD shows, includes collection module and HUD equipment, collection module links to each other with HUD equipment, HUD equipment includes little the control unit of MCU, CAN transceiver module, image buffer module and TFT display screen, CAN transceiver module links to each other with outside CAN bus, CAN transceiver module and image buffer module all link to each other with little the control unit of MCU, little the control unit of MCU links to each other with the TFT display screen.
Preferably, the acquisition module comprises a left camera and a right camera, and the left camera and the right camera are correspondingly installed on the left rearview mirror and the right rearview mirror.
Preferably, the MCU micro control unit comprises an image acquisition module, an image processing unit, a data processing unit and an image display module which are sequentially connected, the data processing unit is further connected with the image acquisition module, the CAN transceiver module and the image buffer module, and the image display module is further connected with the TFT display screen.
Preferably, the left camera and the right camera are connected with the image acquisition module through low-voltage differential signals.
A steering auxiliary method based on HUD display comprises the following specific steps:
step 1: acquiring direction information through a CAN bus, judging whether the steering information exists at present, namely left steering or right steering, starting left video acquisition if the steering information exists, and starting right video acquisition if the steering information exists;
step 2: adjusting the resolution of the acquired image and sending the adjusted display data to a data processing unit;
and step 3: judging whether the image display module is idle, if the image display module is in a non-idle state, storing the image information of the data processing module into the bottom of a data buffer queue of the image buffer module, and if the image display module is in an idle state, entering the step 4;
and 4, step 4: judging whether the data buffer queue is empty, and if the data buffer queue is empty, sending the image information of the data processing module to the image display module; if the data buffer queue is not empty, storing the image information of the data processing module into the queue bottom of the image buffer module;
and 5: and sending the data at the top of the data buffer queue to an image display module, and sequentially displaying the latest image information on a TFT display screen by the image display module.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a steering auxiliary device and a method based on HUD display, which realize steering auxiliary by combining cameras arranged on left and right rearview mirrors and HUD equipment, wherein before steering or lane changing, side and rear vehicle conditions and side and rear road conditions are acquired in real time by the cameras arranged on the left and right rearview mirrors and then displayed on a front windshield by the HUD equipment, a driver can observe the side and rear vehicle conditions without moving a sight line away from a driving direction and judge whether the steering or lane changing conditions exist currently, so that the driving risk is reduced, and traffic accidents are avoided.
Drawings
Fig. 1 is a block diagram of a steering assist device based on HUD display according to the present invention;
fig. 2 is a schematic flow chart of a steering assist method based on HUD display according to the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, the invention discloses a steering auxiliary device based on HUD display, which comprises an acquisition module and a HUD device, wherein the acquisition module is connected with the HUD device, preferably, the acquisition module in the application comprises a left camera and a right camera, and the left camera and the right camera are correspondingly installed on a left rearview mirror and a right rearview mirror.
HUD equipment includes MCU little the control unit, CAN transceiver module, image buffer module and TFT display screen, CAN transceiver module links to each other with outside CAN bus, CAN transceiver module and image buffer module all link to each other with MCU little the control unit, MCU little the control unit links to each other with the TFT display screen, wherein established a FIFO (first in first out) queue in this image buffer module for the buffer memory of receiving image information guarantees CAN not lose the frame. The MCU micro control unit comprises an image acquisition module, an image processing unit, a data processing unit and an image display module which are sequentially connected, the data processing unit is also connected with the image acquisition module, the CAN transceiver module and the image buffer module, and the image display module is also connected with the TFT display screen.
The left side camera and the right side camera are connected with the image acquisition module through low-voltage differential signals in the application. The left camera and the right camera are mounted on the left rear-view mirror and the right rear-view mirror, can adjust the angle of the cameras along with the angle of the rear view angle, are mainly used for video acquisition and are sent to the HUD equipment through LVDS (Low Voltage differential signaling).
The MCU micro control unit in the application is divided into a CAN controller module, an image acquisition module, an image processing unit, a data processing unit, an image buffer module and an image display module.
The CAN controller module is used for receiving CAN bus data, mainly receiving left and right steering signals in the application and distinguishing whether a driver prepares to steer left or right. The HUD device will acknowledge the captured and displayed video information based on the turn signal. And if the received CAN signal shows that the current steering is left steering, acquiring a left camera video for displaying. And if the received CAN signal display is right steering currently, acquiring a right camera video for displaying.
The image acquisition module is used for acquiring image information of the camera. And the image acquired by the camera is sent to the MCU image acquisition module through the LVDS.
The image processing unit is used for adjusting the resolution of the acquired image, the resolution is adjusted to the resolution displayed by the HUD, and the system is set to be 800 × 480.
The data processing unit is used for receiving the data processed by the image processing unit and receiving steering information acquired by the CAN controller. And controlling an acquisition channel of the image acquisition module according to the acquired steering information, and sending the image information to the image display module. And when the display data of the image display module is not sent completely, caching the data received from the image processing module. And taking out the data in the image buffer module and sending the data to the image display module.
The image display module is used for receiving the image information from the data processing unit and sending the image information to the TFT screen for display.
The TFT display screen is used for receiving and displaying the image information from the image processing module.
As shown in fig. 2, the present invention also discloses a steering assist method based on HUD display, which comprises the following specific steps:
step 1: acquiring direction information through a CAN bus, judging whether the steering information exists at present, namely left steering or right steering, starting left video acquisition if the steering information exists, and starting right video acquisition if the steering information exists; the automobile steering information CAN be sent to the HUD through the CAN bus, the HUD sends the data processing unit after receiving the data through the CAN controller, the data processing unit carries out logic judgment, judges whether a left steering request or a right steering request exists at present, and has steering information, and the HUD CAN be switched to a steering mode and displays the road condition at the rear side through the HUD.
Step 2: the image resolution ratio of adjustment collection to display data after will adjusting sends for data processing unit, and the video information who gathers need adjust the resolution ratio to the resolution ratio that is fit for the HUD to show, just can correctly show on the HUD.
And step 3: judging whether the image display module is idle, if the image display module is in a non-idle state, storing the image information of the data processing module into the bottom of a data buffer queue of the image buffer module, and if the image display module is in an idle state, receiving new display data, namely entering step 4;
and 4, step 4: judging whether the data buffer queue is empty or not, if so, indicating that the current data to be displayed is the latest display data, namely, sending the image information of the data processing module to the image display module; if the data buffer queue is not empty, the data to be displayed need to be queued, newly received data can be displayed after other data in the queue are displayed, and the current data to be displayed need to be queued at the end of the queue, and the data to be displayed waits for display, namely image information of the data processing module is stored at the bottom of the queue of the image buffer module;
and 5: and sending the data at the top of the data buffer queue to an image display module, and sequentially displaying the latest image information on a TFT display screen by the image display module.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (5)
1. A steering assist device based on HUD display is characterized in that: including collection module and HUD equipment, collection module links to each other with HUD equipment, HUD equipment includes MCU microcontrol unit, CAN transceiver module, image buffer module and TFT display screen, CAN transceiver module links to each other with outside CAN bus, CAN transceiver module and image buffer module all link to each other with MCU microcontrol unit, MCU microcontrol unit links to each other with the TFT display screen.
2. A steering assist device based on HUD display according to claim 1, characterized in that: the acquisition module comprises a left side camera and a right side camera, and the left side camera and the right side camera are correspondingly installed on the left rearview mirror and the right rearview mirror.
3. A steering assist device based on HUD display according to claim 2, characterized in that: the MCU micro control unit comprises an image acquisition module, an image processing unit, a data processing unit and an image display module which are sequentially connected, the data processing unit is also connected with the image acquisition module, the CAN transceiver module and the image buffer module, and the image display module is also connected with the TFT display screen.
4. A steering assist device based on HUD display according to claim 3, characterized in that: the left side camera and the right side camera are connected with the image acquisition module through low-voltage differential signals.
5. A steering assist method for the HUD display-based steering assist device according to any one of claims 1 to 4, characterized in that: the method specifically comprises the following steps of,
step 1: acquiring direction information through a CAN bus, judging whether the steering information exists at present, namely left steering or right steering, starting left video acquisition if the steering information exists, and starting right video acquisition if the steering information exists;
step 2: adjusting the resolution of the acquired image and sending the adjusted display data to a data processing unit;
and step 3: judging whether the image display module is idle, if the image display module is in a non-idle state, storing the image information of the data processing module into the bottom of a data buffer queue of the image buffer module, and if the image display module is in an idle state, entering the step 4;
and 4, step 4: judging whether the data buffer queue is empty, and if the data buffer queue is empty, sending the image information of the data processing module to the image display module; if the data buffer queue is not empty, storing the image information of the data processing module into the queue bottom of the image buffer module;
and 5: and sending the data at the top of the data buffer queue to an image display module, and sequentially displaying the latest image information on a TFT display screen by the image display module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010880333.3A CN112078486A (en) | 2020-08-27 | 2020-08-27 | Steering auxiliary device and method based on HUD display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010880333.3A CN112078486A (en) | 2020-08-27 | 2020-08-27 | Steering auxiliary device and method based on HUD display |
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| CN112078486A true CN112078486A (en) | 2020-12-15 |
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| CN202010880333.3A Pending CN112078486A (en) | 2020-08-27 | 2020-08-27 | Steering auxiliary device and method based on HUD display |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113928224A (en) * | 2021-11-26 | 2022-01-14 | 北京经纬恒润科技股份有限公司 | Auxiliary driving system based on HUD and pixel headlamp |
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| CN110149552A (en) * | 2019-05-08 | 2019-08-20 | 百度在线网络技术（北京）有限公司 | A kind of processing method and terminal of video flowing frame data |
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2020
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Patent Citations (5)
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| CN102722590A (en) * | 2012-06-25 | 2012-10-10 | 宇龙计算机通信科技(深圳)有限公司 | Terminal and image acquisition method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20201215 |