CN110341595A - A kind of door control system of automobile - Google Patents
A kind of door control system of automobile Download PDFInfo
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- CN110341595A CN110341595A CN201910558929.9A CN201910558929A CN110341595A CN 110341595 A CN110341595 A CN 110341595A CN 201910558929 A CN201910558929 A CN 201910558929A CN 110341595 A CN110341595 A CN 110341595A
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- automobile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
- B60Q9/008—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for anti-collision purposes
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- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a kind of door control systems of automobile, characterized in that including camera unit, processing unit, door control unit and reminding unit；The camera unit is used for after parking of automobile, sending cycle image is to the processing unit, the processing unit handles received image, it identifies moving object in image and judges the moving object and automobile distance, dependent instruction is sent to the door control unit and the reminding unit according to processing result.The present invention, to control car door opening and closing and reminding unit, can significantly reduce traffic accident caused by " door opening ", and the configuration of the present invention is simple by handling rear images on rear side of parking, low in cost, can be suitble to wide popularization and application.
Description
Technical field
The present invention relates to a kind of door control systems of automobile, belong to automobile technical field.
Background technique
Currently, the traffic accident that " door opening " causes is more and more.According to Nanjing traffic control department 1 to 10 October in 2015
Statistical data show: because door opening cause various traffic accidents just reach 98, wherein one day on the 9th October just had occurred 17
It rises.Data also show that such accident, 68% is directed to electric vehicle.
It is minor matter that door opening, which seems, but damage caused by accident is general all than more serious, because door opening is to be taken by surprise
, the hardness of car door is also high.Especially electric vehicle is skyrocketed through in recent years, speed it is universal it is too fast also allow the loss of such accident into
The upgrading of one step.The traffic accident for having data statistics to show that " door opening " causes causes the severely injured ratio with death to be up to
12.45%.Non-standard operation, illegal parking, especially go out at especially careless the main reason for causing " door opening " accident to the effect that
It hires a car, it is necessary to be improved for above situation, to improve traffic safety, reduce traffic accident.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of gate systems of automobile that door opening safety can be improved
System.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of door control system of automobile, including camera unit, processing unit, door control unit and reminding unit；Institute
Camera unit is stated for after parking of automobile, sending cycle image to the processing unit, the processing unit to be to received
Image is handled, and is identified moving object in image and is judged the moving object and automobile distance, is sent out according to processing result
Send dependent instruction to the door control unit and the reminding unit.
Further, the camera unit is mounted on automobile two sides, and acquisition range only covers adjacent lane.
Further, the processing unit to image processing method the following steps are included:
Received periodical gray value of image is calculated, constantly by a later frame compared with below former frame progress, if the time
Between be divided into t, current i-th frame size of video image is M × N block of pixels, Si(m, n) is the i-th framing bit in the gray scale of (m, n) pixel
Value, m, n are respectively the coordinate of horizontal direction and vertical direction in x, y-axis, if the two field pictures before and after time interval are averaged
Absolute error are as follows:
Wherein, ε is a threshold values constant；
If the mean absolute error (MAD) that Continuous plus goes out two field pictures is both less than ε, then it is assumed that rear without motion object；
If the mean absolute error (MAD) that Continuous plus goes out two field pictures is both greater than ε, then it is assumed that there is moving object at rear,
Inter-frame difference algorithm is further used, moving image and background image are separated；If the corresponding pixel points of two field pictures
Gray scale difference value is D (m, n, t): then:
Wherein TdFor adaptive threshold, the point for recording D (m, n, t)=1 is moving image, extracts the motion diagram of every frame image
Picture carries out template identification, if back car is identified as automobile, if the width for measuring t1 frame moving image is L1, picture traverse
For L, L1 value is compared with L value according to criterion, obtains rear car distance with this vehicle distance as a result, according to above-mentioned knot
Fruit generates dependent instruction；
If back car is identified as electric bicycle, if the width for measuring t1 frame moving image is L2, picture traverse is
L is compared L2 value with L value according to criterion, obtains rear car distance with this vehicle distance as a result, according to the above results
Generate dependent instruction.
Further, when back car is identified as automobile, if L1 >=0.1L, illustrate rear car distance at a distance from this vehicle compared with
Closely, forbid door opening, if L1 < 0.1L, illustrate rear car distance at a distance from this vehicle farther out, prompting can be with door opening；
If back car is identified as electric bicycle, if L1 >=0.3L, illustrate rear car distance at a distance from this vehicle compared with
Closely, forbid door opening, if L1 < 0.3L, illustrate rear car distance at a distance from this vehicle farther out, prompting can be with door opening.
Further, the processing unit is using the processor in vehicle mounted guidance or automobile data recorder.
Further, the door control unit is used using former interior central controlled lock.
Further, the reminding unit is using speech ciphering equipment in existing navigator in vehicle or automobile data recorder.
Advantageous effects of the invention: the present invention by parking rear side rear images handle, to control vehicle
Door opening and closing and reminding unit, can significantly reduce traffic accident caused by " door opening ", and the configuration of the present invention is simple, at low cost
It is honest and clean, wide popularization and application can be suitble to.
Detailed description of the invention
Fig. 1 is embodiment door control system connection schematic diagram.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
Door control system as shown in Figure 1, specifically, including camera unit, processing unit, door control unit and prompting
Unit, camera unit connect processing unit, and processing unit is also connected with door control unit, reminding unit；Camera unit is mounted on
Below the reflective mirror of taxi two sides, acquisition range only covers adjacent lane and (only need to acquire adjacent lane information, can reduce at image
The complexity of reason), rear images are periodically acquired after a stoppage；Place in processing unit first choice vehicle mounted guidance or automobile data recorder
Manage device；Using former interior central controlled lock, other door locks are all arranged to be controlled door control unit by central controlled lock；Reminding unit first choice vehicle
In speech ciphering equipment in existing navigator or automobile data recorder.Above system can reduce external device, reduce system cost.
Specific processing method is as follows: processor receives the periodical image that camera unit is sent, and first calculates its gray scale
Value, constantly a later frame is compared with former frame, it is assumed that interval time t, current i-th frame size of setting video image are M × N picture
Plain block, Si(m, n) is the i-th framing bit in the gray value of (m, n) pixel, and m, n are respectively horizontal direction and vertical direction in x, y-axis
Coordinate, if the mean absolute error (MAD) of two field pictures are as follows:
(ε is a threshold values constant)
If the mean absolute error (MAD) that Continuous plus goes out two field pictures is both less than ε, then it is assumed that rear without motion object；
If the mean absolute error (MAD) that Continuous plus goes out two field pictures is both greater than ε, then it is assumed that there is moving object at rear, further adopts
With inter-frame difference algorithm, moving image and background image are separated；If the gray scale difference value of the corresponding pixel points of two field pictures
For D (m, n, t): then:
Wherein TdFor adaptive threshold, 3-5 is usually taken, the point of record D (m, n, t)=1 is moving image, extracts every frame figure
The moving image of picture carries out template identification, if back car is identified as automobile, if the width for measuring t1 frame moving image is
L1, picture traverse L illustrate being closer for rear car distance and this vehicle, forbid door opening, if L1 < if L1 >=0.1L
0.1L, then illustrate rear car distance at a distance from this vehicle farther out, prompting can be with door opening；
If back car is identified as electric bicycle, if the width for measuring t1 frame moving image is L1, picture traverse is
L illustrates being closer for rear car distance and this vehicle, forbids door opening, if L1 < 0.3L, illustrates rear car if L1 >=0.3L
At a distance from this vehicle farther out, prompting can be with door opening for distance；
Using above-mentioned door control system, as being applied on taxi, when objective under taxistand, taxi door control unit
Locked car door can not be opened, and camera unit is started, and the side rear images that processing unit processes camera unit is sent judge that rear is come
Vehicle situation, after confirming safety, processing unit exports alerting signal to reminding unit, and automatic unlocking door control unit, Cheng Keke
Enabling is got off.Using above system, security risk can be significantly reduced, improve the awareness of safety of passenger.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of door control system of automobile, characterized in that including camera unit, processing unit, door control unit and prompting
Unit；The camera unit is used for after parking of automobile, sending cycle image to the processing unit, the processing unit pair
Received image is handled, and is identified moving object in image and is judged the moving object and automobile distance, according to processing
As a result dependent instruction is sent to the door control unit and the reminding unit.
2. a kind of door control system of automobile according to claim 1, characterized in that the camera unit is mounted on automobile two
Side, acquisition range only cover adjacent lane.
3. a kind of door control system of automobile according to claim 1, characterized in that the processing unit is to image processing method
Method the following steps are included:
Received periodical gray value of image is calculated, constantly by a later frame compared with below former frame progress, if time interval
For t, current i-th frame size of video image is M × N block of pixels, Si(m, n) is the i-th framing bit in the gray value of (m, n) pixel,
M, n are respectively the coordinate of horizontal direction and vertical direction in x, y-axis, if the average absolute of the two field pictures before and after time interval
Error are as follows:
Wherein, ε is a threshold values constant；
If the mean absolute error (MAD) that Continuous plus goes out two field pictures is both less than ε, then it is assumed that rear without motion object；
If the mean absolute error (MAD) that Continuous plus goes out two field pictures is both greater than ε, then it is assumed that there is moving object at rear, into one
Step uses inter-frame difference algorithm, and moving image and background image are separated；If the gray scale of the corresponding pixel points of two field pictures
Difference is D (m, n, t): then:
Wherein TdFor adaptive threshold, the point for recording D (m, n, t)=1 is moving image, extracts the moving image of every frame image, into
Row template identification, if back car is identified as automobile, if the width for measuring t1 frame moving image is L1, picture traverse L, root
L1 value is compared with L value according to criterion, obtains rear car distance with this vehicle distance as a result, being generated according to the above results
Dependent instruction；
If back car is identified as electric bicycle, if the width for measuring t1 frame moving image is L2, picture traverse L, root
L2 value is compared with L value according to criterion, obtains rear car distance with this vehicle distance as a result, being generated according to the above results
Dependent instruction.
4. a kind of door control system of automobile according to claim 3, characterized in that when back car is identified as automobile, if
L1 >=0.1L then illustrates being closer for rear car distance and this vehicle, forbids door opening, if L1 < 0.1L, illustrates rear car distance
At a distance from this vehicle farther out, prompting can be with door opening；
If back car is identified as electric bicycle, if L1 >=0.3L, illustrates being closer for rear car distance and this vehicle, prohibit
Only door opening, if L1 < 0.3L, illustrate rear car distance at a distance from this vehicle farther out, prompting can be with door opening.
5. a kind of door control system of automobile according to claim 1, characterized in that the processing unit uses vehicle mounted guidance
Or the processor in automobile data recorder.
6. a kind of door control system of automobile according to claim 1, characterized in that the door control unit is using use
Former car central controlled lock.
7. a kind of door control system of automobile according to claim 1, characterized in that the reminding unit uses in vehicle
Speech ciphering equipment in some navigators or automobile data recorder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910558929.9A CN110341595A (en) | 2019-06-26 | 2019-06-26 | A kind of door control system of automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910558929.9A CN110341595A (en) | 2019-06-26 | 2019-06-26 | A kind of door control system of automobile |
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| CN110341595A true CN110341595A (en) | 2019-10-18 |
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| CN201910558929.9A Pending CN110341595A (en) | 2019-06-26 | 2019-06-26 | A kind of door control system of automobile |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101656023A (en) * | 2009-08-26 | 2010-02-24 | 西安理工大学 | Management method of indoor car park in video monitor mode |
| CN105857180A (en) * | 2016-05-09 | 2016-08-17 | 广西大学 | Hazy weather vehicle driving auxiliary system and method |
| CN105930787A (en) * | 2016-04-16 | 2016-09-07 | 南京林业大学 | Vehicle door opening early-warning method |
| CN106251701A (en) * | 2016-09-14 | 2016-12-21 | 郑州轻工业学院 | Based on the vehicle rearview monitor and alarm system and the method that rotate zoom multi-cam |
| CN109720274A (en) * | 2017-10-27 | 2019-05-07 | 厦门歌乐电子企业有限公司 | A kind of opening door of vehicle collision warning device and method |
-
2019
- 2019-06-26 CN CN201910558929.9A patent/CN110341595A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101656023A (en) * | 2009-08-26 | 2010-02-24 | 西安理工大学 | Management method of indoor car park in video monitor mode |
| CN105930787A (en) * | 2016-04-16 | 2016-09-07 | 南京林业大学 | Vehicle door opening early-warning method |
| CN105857180A (en) * | 2016-05-09 | 2016-08-17 | 广西大学 | Hazy weather vehicle driving auxiliary system and method |
| CN106251701A (en) * | 2016-09-14 | 2016-12-21 | 郑州轻工业学院 | Based on the vehicle rearview monitor and alarm system and the method that rotate zoom multi-cam |
| CN109720274A (en) * | 2017-10-27 | 2019-05-07 | 厦门歌乐电子企业有限公司 | A kind of opening door of vehicle collision warning device and method |
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Application publication date: 20191018 |
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