CN112440875A - Visual driving auxiliary system of container truck high definition - Google Patents
Visual driving auxiliary system of container truck high definition Download PDFInfo
- Publication number
- CN112440875A CN112440875A CN201910828074.7A CN201910828074A CN112440875A CN 112440875 A CN112440875 A CN 112440875A CN 201910828074 A CN201910828074 A CN 201910828074A CN 112440875 A CN112440875 A CN 112440875A
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- camera
- container truck
- display
- container
- trailer
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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
-
- 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
- B60R2300/303—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of image processing using joined images, e.g. multiple camera images
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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
- B60R2300/802—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 monitoring and displaying vehicle exterior blind spot views
- B60R2300/8026—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 monitoring and displaying vehicle exterior blind spot views in addition to a rear-view mirror system
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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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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
The invention provides a high-definition visual driving auxiliary system of a container truck, which comprises a display, a first camera and a second camera, wherein the display is installed in a trailer cab of the container truck, the first camera is detachably installed on the left side of the front end of the side part of a trailer of the container truck, the second camera is detachably installed on the right side of the front end of the side part of the trailer of the container truck, and the first camera and the second camera are respectively connected with the display so that the display can simultaneously display pictures shot by the first camera and the second camera. The high-definition visual driving auxiliary system for the container truck can be used for efficiently and accurately controlling the driving of the container truck by a driver of the container truck, and particularly, when the container truck is backed and stored in a garage, and a towing head and a towing bracket are not in a straight line, the problem of a blind area of the towing head rearview mirror system is solved, so that the container truck is more efficiently and time-saving when being backed and stored, and the driving is safer.
Description
Technical Field
The invention relates to the field of container truck accessories, in particular to a high-definition visual driving auxiliary system of a container truck.
Background
The container truck comprises a towing head, a towing frame and a container, and the length of the body of the container truck is long, so that the towing head and the towing frame of the container truck are generally designed to be rotatable in order to improve flexibility and occupy less road area to complete various traveling operations in various running states. When the trailer head and the trailer frame of the container truck are in a straight line shape, a rearview mirror system on the trailer head can assist a driver to observe the whole trailer frame and two lateral sides of a container on the trailer frame. In this state, the blind area is not very large whether the vehicle is moving forward or backing up, and the driver can easily cope with the blind area. When the container truck enters a larger curve, turns around on a road or backs up for storage, the towing head and the towing bracket rotate for a certain angle, and the container truck does not present a straight line. One side or two sides of the bracket are a large visual field blind area, and the condition of one side or two sides of the bracket cannot be seen only through a rearview mirror system of the bracket even when a driver looks out of a cab probe. The driver's operation in such a situation is solely dependent on past driving experience, or on feel. When the driver feels not to hold, the driver needs to stop the vehicle and get off the vehicle from the cab, and the driver can go to the blind area to observe, and even needs to get on or off the vehicle for many times by one-time reversing operation.
Therefore, only by means of the rearview mirror system on the towing head, under the use condition that the towing head and the towing bracket are bent, a large blind area actually exists. These blind areas not only cause difficulty in driving, or a reduction in efficiency; great hidden trouble is brought to the driving.
Disclosure of Invention
In order to solve the problems, the invention provides a high-definition visual driving auxiliary system of a container truck, which is arranged on the container truck and used for assisting a driver to drive and control the container truck, and solves the problem of a blind area of a towing head rearview mirror system when a towing head and a towing frame are not in a straight line.
The invention is realized by the following technical scheme:
the invention provides a high-definition visual driving auxiliary system of a container truck, which comprises a display, a first camera and a second camera, wherein the display is installed in a trailer cab of the container truck, the first camera is detachably installed on the left side of the front end of the side part of a trailer of the container truck, the second camera is detachably installed on the right side of the front end of the side part of the trailer of the container truck, and the first camera and the second camera are respectively connected with the display so that the display can simultaneously display pictures shot by the first camera and the second camera.
Further, still include and install the third camera in the middle of the bracket rear end of container truck with can dismantling, the display selectivity with the third camera is connected.
Further, the display is automatically switched between a binocular display mode and a trinocular display mode according to the number of cameras of the display.
Furthermore, the first camera and the second camera are not protruded out of the side part of the bracket of the container truck.
Further, the first camera and the second camera have the same structure, and the FOV of the first camera is smaller than or equal to the natural visual angle of human eyes.
Further, the FOV of the third camera is greater than or equal to 1.5 times the natural viewing angle of human eyes.
The invention has the beneficial effects that:
the high-definition visual driving auxiliary system for the container truck comprises a display, a first camera and a second camera, wherein the display is installed in a trailer cab of the container truck, the first camera is detachably installed on the left side of the front end of the side portion of a trailer of the container truck, the second camera is detachably installed on the right side of the front end of the side portion of the trailer of the container truck, and the first camera and the second camera are respectively connected with the display so that the display can simultaneously display pictures shot by the first camera and the second camera. The high-definition visual driving auxiliary system for the container truck can be used for efficiently and accurately controlling the driving of the container truck by a driver of the container truck, and particularly, when the container truck is backed and stored in a garage, and a towing head and a towing bracket are not in a straight line, the problem of a blind area of the towing head rearview mirror system is solved, so that the container truck is more efficiently and time-saving when being backed and stored, and the driving is safer.
Drawings
FIG. 1 is a schematic structural view of a container truck;
FIG. 2 is a schematic layout view of the high-definition visual driving assistance system of the container truck of the present invention on the container truck;
FIG. 3 is a schematic layout view of the high-definition visual driving assistance system of the container truck of the present invention on the container truck;
FIG. 4 is an enlarged view of the structure at A in FIG. 2;
FIG. 5 is an enlarged view of the structure at B in FIG. 3;
FIG. 6 is an enlarged view of the structure at C in FIG. 3;
fig. 7 is a schematic block diagram of a camera of the high-definition visual driving assistance system for the container truck according to the present invention.
FIG. 8 is a block diagram of a display of the high-definition visual driving assistance system for the container truck according to the present invention;
fig. 9 is a schematic block diagram of a display of the high-definition visual driving assistance system for the container truck according to the present invention;
fig. 10 is a schematic view of the display effect of the display of the high-definition visual driving assistance system for the container truck according to the present invention.
Detailed Description
In order to more clearly and completely explain the technical scheme of the invention, the invention is further explained with reference to the attached drawings.
Referring to fig. 1 to 6, the present invention provides a high-definition visual driving assistance system for a container truck, including a display 10 installed in a cab of a trailer 1 of the container truck, a first camera 30 detachably installed on the left side of the front end of the side portion of the trailer 2 of the container truck, and a second camera 50 detachably installed on the right side of the front end of the side portion of the trailer 2 of the container truck, wherein the first camera 30 and the second camera 50 are respectively connected to the display 10, so that the display 10 simultaneously displays pictures shot by the first camera 30 and the second camera 50.
In the embodiment, because a container truck is composed of a trailer 1, a trailer 2 and a container 3, the three parts belong to different manufacturers, and the trailer 1, the trailer 2 and the container 3 are independent individuals, in an actual working environment, the trailer 1, the trailer 2 and the container 3 are not fixedly combined and are often collocated again. The container 3 on the bracket 2 can be disassembled integrally, so the high-definition visible driving auxiliary system of the container truck is not suitable for being installed on the container 3. The problem is how to solve the problems of convenience of detachment and installation and reliability. Therefore, the first camera 30 detachably mounted on the left side of the front end of the side part of the bracket 2 of the container truck and the second camera 50 detachably mounted on the right side of the front end of the side part of the bracket 2 of the container truck are arranged, so that the first camera 30 and the second camera 50 can be conveniently replaced on the other bracket 2.
In this embodiment, the detachable mounting manner is a fixing manner of screw detachment and installation, which can ensure the fixing stability and can realize detachment by using a simple tool.
In this embodiment, the display 10 is installed in the cab of the trailer 1 of the container truck, so that the driver can conveniently check the left and right conditions of the trailer 2 of the container truck through the display 10, and the first camera 30 and the second camera 50 are arranged on the trailer 2 so as to always observe the two sides of the trailer 2 and the container 3 in any operation state of the container truck.
In the present embodiment, the first camera 30 and the second camera 50 are as close to the towing head 1 as possible, so that the entire scene of the towing bracket 2 and the container 3 above the towing bracket 2 can be collected by the first camera 30 and the second camera 50, the first camera 30 and the second camera 50 are as close to the outer side of the towing bracket 2 as possible on the towing bracket 2, and thus, there are a plurality of images outside the towing bracket 2 in the images captured by the first camera 30 and the second camera 50, and the partial images are helpful for the traveling crane, and the images inside the towing bracket 2 in the images are not helpful for the traveling crane, so that the images need to be cut.
Optionally, a third camera 70 detachably mounted in the middle of the rear end of the trailer frame 2 of the container truck is further included, and the display 10 is selectively connected with the third camera 70.
The dead zones on both sides of the trailer 2 of the container truck are more important and indispensable than the rear side of the container 3; the rear side of the carriage 2 or the container 3 is less critical and therefore the third camera 70 on the rear side of the carriage 2 may not be mounted for cost savings.
Further, the display 10 automatically switches between binocular and trinocular display modes according to the number of cameras associated with the display 10.
In the embodiment, the dead zones at the left and right sides of the towing bracket 2 cause the greatest trouble to drivers in the use process of the container truck; therefore, the scheme of only installing the first camera 30 and the second camera 50 on the left and right sides of the bracket 2 is a dual-purpose display mode, and the mode is enough to eliminate the blind areas on the left and right sides of the bracket 2. If the third camera 70 is arranged in the middle of the rear end of the bracket 2, the scheme of arranging all three high-definition cameras is a three-purpose scheme. The two solutions can cope with different cost requirements. The display 10 in the cab can be automatically switched between binocular and trinocular display modes according to the number of connected cameras without user intervention.
Further, the first camera 30 and the second camera 50 do not protrude out of the side of the bracket 2 of the container truck; the first camera 30 and the second camera 50 protruding out of the bracket 2 are prevented from being easily damaged by collision during driving.
Further, the first camera 30 and the second camera 50 have the same structure, and the FOV of the first camera 30 is smaller than or equal to the natural viewing angle of human eyes and is 50 degrees.
Further, the FOV of the third camera 70 is greater than or equal to 1.5 times the natural viewing angle of human eyes, and is 75 degrees.
The first camera 30, the second camera 50, and the third camera 70 have the same structure or parameters except that the FOV is different.
Referring to fig. 7, the first camera 30, the second camera 50, and the third camera 70 have the following design parameters:
A) the design of the camera enables DC 5V-36V to be input, very wide direct current voltage input can be supported, RTQ2130 converts high input direct current power supply voltage into a main power rail of 3.6V, the main power rail selects 3.6V, the power supply efficiency of the camera is very high, the operation is very stable, and the anti-interference characteristic of the power supply is very good;
B) RT9078N and RT8096B convert the main 3.6V rail voltage to the set of low voltages required by the system, where RT9078N is an LDO used in the supply of analog signal systems with high power supply ripple requirements but with less current requirements; RT8096B is a low voltage DC-DC, and the use of DC-DC will result in higher power efficiency and higher power density;
C) the Sensor selects ON AR0143AT/AR0147AT, which is a 1/4-inch CMOS Sensor with HDR120 dB-140 dB characteristics, and has very high cost performance and good night vision effect. If the night vision requirements are particularly high, AR0138AT may be chosen, which is a Sensor that achieves starlight level night vision capability; the Sensor outputs a signal of RAW 12bit to an ISP of a rear stage;
D) the ISP of the product adopts ON AP0102AT, which is a very high-performance level image signal processor; the front end acquires an original image signal of RAW 12bit from a Sensor through a parallel port, and performs a series of image signal processing such as AE/AWB/color interpolation/GAMMA/HDR/filtering on the signal, and the final image signal is output through an interface of YUV 42216 bit. The CAV25M01 is an EEPROM device for storing a program patch of an ISP and various parameters such as AE/AWB adjustment target and control parameters of an adjustment process, and the like.
E) TP2912 is the coding chip of TVI 2.0, also called as the Tx chip of TVI; receiving a 16-bit YUV 422-format image signal from an ISP (internet service provider), encoding the image signal into a TVI 2.0 signal, and outputting the TVI 2.0 signal to a rear-end display device through a 75-ohm coaxial cable; TP2912 is a chip of a register, and needs another master chip for configuration, where WT51F108 is used for configuration;
F) WT51F108 is a 1T 8051, where the MCU has its main task to configure TP 2912; although the hardware also designs the communication interface with the ISP (AP0102AT), the corresponding functions are not planned.
G) The standard is a high-definition high-refresh-rate camera specification, and a 1280x 720p/50Hz HDR video is output to a rear-end display terminal through a TVI 2.0 real-time high-definition video standard. In domestic application, a vertical refresh rate of 50Hz is selected, and the vertical refresh rate is mainly matched with the working frequency of domestic alternating current. The high refresh rate can also overcome the phenomenon that the moving picture is stuck, and the video looks smoother; however, this is achieved at the expense of noisy performance under low light conditions. HDR is just needed in a driving environment, and is easy to meet a wide dynamic scene; the camera planning of us adopts the most advanced multiple exposure HDR processing technology, and has the best HDR display effect; in order to make a local part of an image have very good contrast performance in a standard display device (a display device without HDR display capability) by means of nonlinear compression of signal amplitude, if a 8-bit display device of the backend standard is handled by means of linear compression of signal amplitude, the contrast performance of the whole image is worse.
Referring to fig. 8-10, the display 10 includes a display processor 12 and a liquid crystal panel 11, where the display processor 12 is connected to the liquid crystal panel 11 and the camera 13, respectively, (where the camera 13 includes a first camera 30, a second camera 50, and a third camera 70); the camera 13 captures an image picture and transmits the image picture to the display processor 12, the display processor 12 processes the image and displays the image on the liquid crystal screen 11, and the display processor 12 switches the display mechanism of the liquid crystal screen 11 according to the number of the connected cameras 13, wherein when the display processor 12 is connected with two paths of cameras 13, the liquid crystal screen 11 is in a double-picture display mode; when the display processor 12 is connected to the three-way camera 13, the liquid crystal display 11 is in a three-screen display mode.
In this embodiment, the liquid crystal panel 11 of the present invention is a 12.8-inch, high-brightness, high-contrast TFT liquid crystal panel 11 with an aspect ratio of 8: 3; the liquid crystal panel 11 may allow three display screens to be displayed in a horizontal manner. Some screens with small aspect ratios, such as 4:3/16:9, etc., are less than perfect for placing three pictures of high definition video horizontally. Of course, the size of the liquid crystal screen 11 of the present invention is not limited to this specific specification, and other liquid crystal screens 11 suitable for placing three high-definition videos horizontally on the same screen are all applicable.
Further, the image processing performed by the display processor 12 includes, but is not limited to, cropping, scaling, and stitching.
In this embodiment, the display processor 12 is of a model V50A-HD, and can support 4-channel high definition video input, and perform various cutting, scaling, splicing on the input video, and then output to the liquid crystal display 11 for display.
Further, when the display processor 12 is connected to the two-way cameras 13, the two-way cameras 13 are respectively installed at the front ends of the left and right sides of the bracket 2 of the container truck for observing blind areas on the left and right sides of the bracket 2.
Further, when the display processor 12 is connected with the three-way cameras 13, the two-way cameras 13 are respectively arranged at the front ends of the left side part and the right side part of the bracket 2 of the container truck; wherein camera 13 of all the way is installed in the middle part of the bracket 2 rear side of container truck for observe the blind area of bracket 2 left and right sides and rear side.
In the present embodiment, the local oscillation clock of the display processor 12 is 27 MHz.
In this embodiment, a TVI high definition Rx, whose model is TP2850, is provided between the display processor 12 and each camera 13, the camera 13 inputs a 1280x 720/50Hz high definition video to the display processor 12V50A, and is connected to the display processor 12V50A through an MIPI-CSI interface, and the display processor 12 performs display processing on the high definition video of the camera 13.
Further, the system power supply 15 is further included, and the system power supply 15 is divided into three paths, wherein one path is used for supplying backlight driving of the liquid crystal screen 11; one path of the data is supplied to the camera 13; one path of the display is supplied to the display of the high-definition visual driving auxiliary system of the container truck for use.
In this embodiment, since the display of the present invention is applied to a container truck, the display supports a DC 24V input, and the basic processing of the power supply is as follows: the input DC 24V of the system power supply 15 is firstly converted into DC 12V, and the DC is supplied by three paths.
Further, still include MCU module 14, MCU module 14 one end and system power 15 are connected, and the other end and display processor 12 are connected, and when display processor 12 abnormal state appeared, MCU module 14 can restart system power 15, so that the visual driving auxiliary system's of container truck high definition display resumes normal work.
In the present embodiment, the MCU module 14 is responsible for power and reliability management in the system, and even if the display processor 12V50A is in an abnormal state, the MCU module 14 can restart the system power 15 to restore the display system to normal operation.
Further, a switching voltage stabilizing module 16 is further arranged between the system power supply 15 and the display processor 12, and the switching voltage stabilizing module 16 converts each group of low-voltage direct current to be used by each level of the system.
In the present embodiment, the switching regulator module 16 includes a plurality of switching regulators, the types of which are RT2014, RT8097C and RT5797A, respectively. The DC 12V is supplied to the display system, and DC 5V is converted through RT 2014; then, the low-voltage direct current of each group is converted by RT8097C and RT5797A to be used by each stage of the system.
In the present embodiment, DC 12V in the system power supply 15 supplies power to the backlight of the liquid crystal panel 11, and the voltage is boosted by RT8532 to be converted into a constant current source to supply power to the LEDs of the backlight system. If the DC 24V is directly supplied to the RT8532, the voltage of the backlight constant current regulation is about 30V because the DC 24V on the vehicle is changed, and the two voltages are relatively close to each other, because the constant current is unstable, and the change of the picture brightness occurs. Therefore, a stable 12V was supplied directly, and the result was ideal.
Further, a memory 17 connected to the display processor 12 is included for storing program operations, various data buffering and processing procedures of the display processor 12, and for preventing data loss after power failure. The memory 17DDR3 is of type K4E4E324 EE-EGCE.
Further, the display device further comprises an SPI FLASH18 connected with the display processor 12, and the SPI FLASH18 stores programs and parameters in the program running process, so as to ensure that the parameters are not lost in the power-down state. The model number of the SPI FLASH18 is W25Q64BVSS 1G.
Further, a bridge chip 19 is further disposed between the display processor 12 and the liquid crystal panel 11, and the bridge chip 19 converts the output signal of TTL into an LVDS signal of VESA and transmits the LVDS signal to the liquid crystal panel 11.
In this embodiment, since the display processor 12V50A cannot directly drive the TFT liquid crystal panel 11 of the LVDS interface, it is necessary to convert the output signal of TTL into an LVDS signal of VESA through one bridge chip 19THC63VLD827 and transmit the converted LVDS signal to the liquid crystal panel 11.
In this embodiment, when the resolution and aspect ratio of the liquid crystal panel 11 are different; what is the proportion of the three camera 13 levels to be reasonably allocated. Therefore, to perform certain cropping and scaling on the input image, the processing is based on two criteria: the image display is not distorted, and the image is displayed in a full screen mode. The two cameras 13 on the left and right sides provide effective information in the horizontal direction on the picture inside the towing bracket 2, and the ineffective content almost occupies half; in order to effectively utilize the display area of the liquid crystal panel 11, useless pictures should be cut off greatly; the display processor 12V50A of the display makes the appropriate cropping of the left and right frames.
The high-definition visual driving auxiliary system for the container truck can be used for efficiently and accurately controlling the driving of the container truck by a driver of the container truck, and particularly, when the container truck is backed and stored in a garage, and the towing head 1 and the towing bracket 2 are not in a straight line, the problem of a blind area of the rearview mirror system of the towing head 1 is solved, so that the container truck is more efficiently and time-saving when being backed and stored, and the driving is safer.
Of course, the present invention may have other embodiments, and based on the embodiments, those skilled in the art can obtain other embodiments without any creative effort, and all of them are within the protection scope of the present invention.
Claims (6)
1. The utility model provides a visual driving auxiliary system of container truck high definition which characterized in that, including install the display in the trailer driver's cabin of container truck, can install the first camera on the left of bracket lateral part front end of container truck with dismantling and can install the second camera on bracket lateral part front end right side of container truck with dismantling, first camera with the second camera respectively with the display is connected, so that the display simultaneous display first camera with the picture that the second camera was shot.
2. The high-definition visual driving assistance system for the container truck as claimed in claim 1, further comprising a third camera detachably mounted in the middle of the rear end of the trailer frame of the container truck, wherein the display is selectively connected with the third camera.
3. The high-definition visual driving assistance system for the container truck as claimed in claim 2, wherein the display automatically switches between binocular and trinocular display modes according to the number of cameras with the display.
4. The high-definition visual driving assistance system for the container truck as claimed in claim 1, wherein the first camera and the second camera are not protruded from the side of the trailer frame of the container truck.
5. The high-definition visual driving assistance system for the container truck as claimed in claim 1, wherein the first camera and the second camera have the same structure, and the FOV of the first camera is smaller than or equal to the natural visual angle of human eyes.
6. The high-definition visual driving assistance system for the container truck as claimed in claim 2, wherein the FOV of the third camera is greater than or equal to 1.5 times of the natural viewing angle of human eyes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828074.7A CN112440875A (en) | 2019-09-03 | 2019-09-03 | Visual driving auxiliary system of container truck high definition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828074.7A CN112440875A (en) | 2019-09-03 | 2019-09-03 | Visual driving auxiliary system of container truck high definition |
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| CN112440875A true CN112440875A (en) | 2021-03-05 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140340516A1 (en) * | 2013-05-16 | 2014-11-20 | Ford Global Technologies, Llc | Rear view camera system using rear view mirror location |
| CN205059424U (en) * | 2015-09-25 | 2016-03-02 | 刁基清 | Freight train, tractor image system of backing a car |
| CN207875508U (en) * | 2017-10-20 | 2018-09-18 | 上海豫兴电子科技有限公司 | Blind area intelligence auxiliary display screen and display |
-
2019
- 2019-09-03 CN CN201910828074.7A patent/CN112440875A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140340516A1 (en) * | 2013-05-16 | 2014-11-20 | Ford Global Technologies, Llc | Rear view camera system using rear view mirror location |
| CN205059424U (en) * | 2015-09-25 | 2016-03-02 | 刁基清 | Freight train, tractor image system of backing a car |
| CN207875508U (en) * | 2017-10-20 | 2018-09-18 | 上海豫兴电子科技有限公司 | Blind area intelligence auxiliary display screen and display |
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Application publication date: 20210305 |