CN218400383U - Automatic activation control system for multi-path panoramic all-round viewing function - Google Patents

Abstract

The utility model provides an automatic activation control system of multipath panorama look around function, the utility model relates to a vehicle driver assistance field needs activation panorama look Around (AVM) function to be used for the novel solution of driver assistance under a plurality of different scenes to the driver. According to different environments of the vehicle, a driver can activate the AVM function manually or automatically for driving assistance. And under the condition that the vehicle speed is less than 25km/h, a driver activates the AVM function by pressing one key through the external AVM key and enters an AVM interface. Besides the manual scheme, the system supports four automatic AVM function activating modes, and automatically activates the AVM function and enters an AVM interface on the basis of meeting relevant conditions by judging whether a steering signal, an R gear signal, a radar alarm signal, a first D gear signal and the like meet activating conditions. The scheme optimizes the control principle of the existing electric system of the vehicle, has low cost and good universality, and meets the requirement of safe driving of drivers under various road conditions.

Description

Automatic activation control system for multi-path panoramic all-round viewing function

Technical Field

The utility model relates to a multipath panorama looks around function automatic activation control system belongs to vehicle driver assistance technical field.

Background

With the rapid development of image and computer vision technologies, more and more technologies are applied to the field of automotive electronics, such as panoramic surround view systems. The panoramic all-Around Vision (AVM) system mainly collects real-time peripheral images of a vehicle through four cameras arranged at the front, the back, the left and the right of the vehicle, displays the images on a display screen in the automobile through information transmission, video synthesis processing and the like, can provide more visual auxiliary driving image information for a driver, enhances the perception of the surrounding environment of the vehicle, and expands the visual field of the driver.

Most of the existing AVM function activating modes are manual or reverse automatic activation, and in practical application, the existing AVM function activating modes do not meet the requirement that the AVM function needs to be started immediately for driving assistance under various external environments, and the AVM function can be activated only by further operation of a driver. This kind of mode has increased driver's reaction time, causes the field of vision blind area, also is unfavorable for driving safety.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a multipath panorama look around function automatic activation control system utilizes well accuse the control unit and detects required signal, reduces the fault rate low, improves the security.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:

a multi-path panoramic all-round looking function automatic activation control system is characterized by comprising a central control unit, a BCM, a TCU, an ESP, a radar, a display screen, an AVM key and a power supply; the central control unit comprises a panoramic all-round view processing unit, an SOC, an MCU, a CAN processing unit, a power supply processing unit and a LIN processing unit; the panoramic all-around processing unit is connected to an SOC (system on chip), the SOC is connected to a display screen and an MCU (micro controller unit), the MCU is connected to a CAN (controller area network) processing unit, a power supply processing unit, a LIN processing unit and an AVM (audio video module) key, the LIN processing unit is also connected to a radar, the CAN processing unit is connected to a TCU (transmission control unit), an ESP (electronic stability program) and a BCM (binary coded modulation) through a gateway, the BCM is also connected to a steering lamp, and the power supply is connected to the BCM, the TCU, the ESP radar and the power supply processing unit.

Preferably, the panoramic all-round looking processing unit is further connected with a front all-round looking camera, a left all-round looking camera, a right all-round looking camera and a rear all-round looking camera.

Preferably, the BCM is connected with the gateway through a CAN line; the TCU is connected with the gateway through a CAN line; the ESP is connected with a gateway through a CAN line, and the gateway is connected with a central control unit through the CAN line.

Preferably, the AVM key is connected to the central control unit through a hard wire.

Preferably, the radar is connected to the central control unit via a LIN line.

Preferably, the display screen is connected to the central control unit through LVDS lines.

The utility model has the advantages of: the safety is high, the central control unit is used for detecting the required signal, the failure rate is low, automatic control is realized, and safety and reliability are realized. The method has low cost, extracts related signals for automatic activation and judgment of AVM function by means of the existing electrical system of the vehicle, and has good universality.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic structural view of the present invention.

In the figure; BCM, automobile body control module, TCU, remote information control unit, ESP, automobile body electron stable system, MCU, little the control unit, SOC system level chip, AVM, panorama monitoring image system.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

The specific working mode is as follows:

after a vehicle is powered ON (ON), the vehicle body controller BCM, the variable box controller TCU, the electronic stability system controller ESP, the gateway and the central control unit enter a working state, the ESP periodically outputs a vehicle speed signal to the gateway, and the gateway transfers the vehicle speed signal from the chassis power CAN to the audio-visual entertainment CAN and sends the vehicle speed signal to the central control unit. At this time, the AVM program initializes and enters a standby state.

The manual protocol is as follows:

when the AVM signal is detected for the first time (low level is effective) and the vehicle speed is less than or equal to 25km/h, the AVM function is activated, and at the moment, the central control unit transmits the image to the display screen through the LVDS wire harness and displays the front view and the aerial view.

Exiting the AVM function: 1. when the vehicle speed is more than or equal to 25km/h, the central control unit forces to quit the AVM function, and the display screen displays an interface before the AVM function is activated; 2. when the vehicle speed is less than 25km/h, the AVM key is pressed again, the central control unit quits the AVM function, and the display screen displays an interface before the AVM function is activated.

In addition, if the vehicle has other key operations with higher priority, the AVM function can also be quitted.

The automatic protocol is as follows:

the first method is as follows: steering activation

Take the right turn as an example. And when the central control unit judges that the right turn signal is effective and the vehicle speed is less than 25km/h, the AVM function is activated, and at the moment, the central control unit transmits an image to a display screen through an LVDS wire harness and displays a right view and an aerial view.

Exiting the AVM function; 1. when the vehicle speed is less than 25km/h, the right steering lamp is turned off, similarly, the BCM transfers signals to the central control unit through the gateway, and when the central control unit judges that the right turn is invalid, the central control unit continuously outputs the AVM image for 500ms and then quits the AVM function; 2. when the vehicle speed is more than 25km/h, the central control unit forces to quit the AVM function, and the display screen displays the interface before the AVM function is activated after the AVM function is quitted in the two modes.

In addition, if the vehicle has other key operations with higher priority, the AVM function can also be quitted.

The second method comprises the following steps: r gear activation

The TCU outputs a gear signal to the gateway, the gateway transfers the gear signal from the chassis power CAN to the audio-visual entertainment CAN and sends the gear signal to the central control unit, the central control unit activates the AVM function when receiving the gear signal of R gear, and the central control unit transmits an image to the display screen through the LVDS wire harness and displays a rear view and an aerial view.

And if the central control unit receives that the gear signal is the non-R gear, the AVM function is exited, and the display screen displays the interface before the AVM function is activated.

The third method comprises the following steps: radar alarm activation

When the radar monitors an obstacle, the radar transmits a radar alarm signal to the central control unit through the LIN line, and the central control unit judges that the following conditions are met simultaneously: the vehicle speed is less than 25km/h & TCU non-R gear signal & radar alarm signal, the AVM function is activated, and at the moment, the central control unit transmits the image to the display screen through the LVDS wire harness and displays the front view and the bird's-eye view.

The AVM interface is quitted under the scheme, if the vehicle speed is less than 25km/h, the AVM key is pressed, and the central control unit quits the AVM function when detecting an AVM key invalid signal; when the radar detects that no obstacle exists and the central control unit detects that the radar alarm signal is invalid, the AVM image 3s is continuously output and the AVM function is withdrawn; if the vehicle speed is more than or equal to 25km/h, the AVM function is directly quitted; after exiting the AVM in the above mode, the display screen displays the interface before the AVM function is activated.

In addition, if the vehicle has other key operations with higher priority, the AVM function can also be quitted.

The method four comprises the following steps: first D gear engagement activation after power-on

After electrification, the TCU transmits the gear signals to the central control unit through the gateway, the central control unit detects that the condition that the AVM function is not activated when the D-gear signals & other modes are received for the first time after electrification is met, the AVM function is activated, and at the moment, the central control unit transmits the images to the display screen through the LVDS wire harness and displays the front view and the aerial view.

The AVM interface is quitted under the scheme, if the vehicle speed is more than or equal to 25km/h, the central control unit forcibly quits the AVM function, and the display screen displays the interface before the AVM function is activated; if the vehicle speed is less than 25km/h, pressing an AVM key, enabling the central control unit to quit the AVM function, and displaying an interface before activating the AVM function on the same display screen.

In the AVM activation mode, the highest priority is R gear activation, and the first D gear activation, AVM key pressing, radar activation and steering activation are sequentially performed after power-on, the low-priority trigger is invalid after the high-priority activation, and the high-priority trigger is valid after the low-priority activation.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A multi-path panoramic all-round looking function automatic activation control system is characterized by comprising a central control unit, a BCM, a TCU, an ESP, a radar, a display screen, an AVM key and a power supply; the central control unit comprises a panoramic all-round view processing unit, an SOC, an MCU, a CAN processing unit, a power supply processing unit and a LIN processing unit; the panoramic all-around processing unit is connected to an SOC (system on chip), the SOC is connected to a display screen and an MCU (micro controller unit), the MCU is connected to a CAN (controller area network) processing unit, a power supply processing unit, a LIN processing unit and an AVM (audio video module) key, the LIN processing unit is also connected to a radar, the CAN processing unit is connected to a TCU (transmission control unit), an ESP (electronic stability program) and a BCM (binary coded modulation) through a gateway, the BCM is also connected to a steering lamp, and the power supply is connected to the BCM, the TCU, the ESP radar and the power supply processing unit.

2. The automatic activation control system for multi-path panoramic surround view function according to claim 1, wherein the panoramic surround view processing unit is further connected with a front surround view camera, a left surround view camera, a right surround view camera, and a rear surround view camera.

3. The multi-path panoramic all-round function automatic activation control system of claim 1, wherein the BCM is connected to a gateway through a CAN line; the TCU is connected with the gateway through a CAN line; the ESP is connected with a gateway through a CAN line, and the gateway is connected with a central control unit through the CAN line.

4. The multi-path panorama look-around function automatic activation control system of claim 1, wherein the AVM button is hard-wired to a central control unit.

5. A multi-path panoramic all-round function automatic activation control system as claimed in claim 1, wherein the radar is connected to the central control unit by a LIN line.

6. The multi-path panoramic all-round function automatic activation control system of claim 1, wherein the display screen is connected to the central control unit through LVDS wires.

Images