CN105774654A - Car blind spot visible steering system and control method - Google Patents
Car blind spot visible steering system and control method Download PDFInfo
- Publication number
- CN105774654A CN105774654A CN201610119378.2A CN201610119378A CN105774654A CN 105774654 A CN105774654 A CN 105774654A CN 201610119378 A CN201610119378 A CN 201610119378A CN 105774654 A CN105774654 A CN 105774654A
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- China
- Prior art keywords
- circuit
- automobile
- blind spot
- photographic head
- car
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B60R2300/10—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used
- B60R2300/105—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used using multiple cameras
-
- 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
-
- 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
- B60R2300/806—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 aiding parking
Abstract
The invention relates to the technical field of car blind spot control and discloses a car blind spot visible steering system and a control method. A car comprises a car ECU, a left camera, a rear camera, a right camera, a car guide display screen and a car battery. The car blind spot visible steering system comprises a front amplifying circuit, a filtering and noise reduction circuit, a DSP processing circuit and a single chip microcomputer which are connected in sequence. The front amplifying circuit is connected with the left camera, the rear camera and the right camera. The filtering and noise reduction circuit is connected with the car guide display screen. The DSP processing circuit and the single chip microcomputer are both connected with the car battery through a power source management module. The single chip microcomputer is connected with the car ECU through a CAN communication circuit. The car blind spot visible steering system can monitor vehicles in a blind area of outside rear-view mirrors, carry out intelligent judgment, conduct automatic reminding and prevent lane change collision.
Description
Technical field
The present invention relates to automobile blind spot and control technical field, more specifically, particularly to a kind of visual steering of automobile blind spot and control method.
Background technology
Along with the sharp increase of car owning amount, side crash Frequent Accidents on road, it is seen everywhere.One main cause of side crash danger is not enough from the outside rear-view mirror visual field, there is bigger blind area, and motorist does not observe the vehicle of side colleague when lane change.Additionally, under the adverse circumstances such as heavy rain, dense fog, night be dim (when particularly rain in the evening), outside rear-view mirror function lost efficacy substantially, very easily cause that lane change has an accident, in addition, the driver that part Getting Started or attention are less concentrated, also easily ignores observation, has an accident during doubling.These accidents not only solve to waste time and energy, and sometimes also bring the harm of personal safety, it is necessary to SC.Roundlet mirror on the market is also the use solving blind area, but its deformation is big, observe inconvenience, Distance Judgment is forbidden, and, there will be inefficacy after the viscous water of misty rain sky minute surface.For this reason, it is necessary to a kind of visual steering of automobile blind spot of design and control method.
Summary of the invention
It is an object of the invention to provide a kind of visual steering of automobile blind spot and control method that can carry out intelligent decision and be automatically reminded to, prevent lane-change collision.
In order to achieve the above object, the technical solution used in the present invention is as follows:
A kind of visual steering of automobile blind spot, described automobile includes automobile ECU, left photographic head, rear photographic head, right photographic head, automobile guiding display screen and automobile batteries, the visual steering of described automobile blind spot includes the pre-amplification circuit being sequentially connected with, filtering and noise reduction circuit, DSP processes circuit and single-chip microcomputer, described pre-amplification circuit and left photographic head, rear photographic head, right photographic head connects, described filtering and noise reduction circuit is connected with automobile guiding display screen, described DSP processes circuit and single-chip microcomputer is connected with automobile batteries each through power management module, described single-chip microcomputer is connected with automobile ECU by CAN communication circuit.
Further, described power management module includes two manostat, and one of them manostat connects automobile batteries and DSP processes circuit, and other in which manostat connects automobile batteries and single-chip microcomputer.
Further, described pre-amplification circuit adopts model to be the difference amplifier of LMV385.
The present invention also provides for the control method of the visual steering of a kind of automobile blind spot, comprises the following steps,
S1, single-chip microcomputer carry out data exchange by CAN communication circuit and automobile ECU 1, when obtaining the signal of motor turning, by serial line interface, turn signal are transferred to DSP and process circuit；
S2, pre-amplification circuit obtain the video signal that turns to of the left photographic head corresponding with turn signal or rear photographic head, and by this video signal by filtering and noise reduction circuit be filtered with noise reduction process after input to DSP process circuit；
Picture in video signal is carried out S3, DSP process circuit pretreatment and analysis obtains concrete result.
Further, described DSP process circuit picture is carried out pretreatment include histogram enhancement, image denoising, image sharpening, Image Edge-Detection and image segmentation.
Compared with prior art, it is an advantage of the current invention that:
1, the present invention can monitor vehicle in outside rear-view mirror blind area, carries out intelligent decision, and is automatically reminded to (display and sound), prevents lane-change collision；
2, to solve the lane change that misty rain sky, the environment such as dim, reflective or new hand's distractibility bring dangerous for the present invention, especially during sleety weather at night；
3, the present invention observes the visual angle of side and more strengthens than traditional visual angle seeing rearview mirror, can effectively know anticipation side road conditions；
4, cost performance of the present invention is high, has blind spot miscellaneous function, can have vehicle backing backsight function simultaneously；
5, the present invention is applicable to various vehicles, practical and easy for installation；
6, the present invention can improve driving safety performance and Driving.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the frame diagram of the visual steering of automobile blind spot of the present invention.
Fig. 2 is the circuit diagram of pre-amplification circuit in the visual steering of automobile blind spot of the present invention.
Fig. 3 is the circuit diagram of filtering and noise reduction circuit in the visual steering of automobile blind spot of the present invention.
Fig. 4 is the circuit diagram of power management module in the visual steering of automobile blind spot of the present invention.
Fig. 5 is the circuit diagram of single-chip microcomputer in the visual steering of automobile blind spot of the present invention.
Fig. 6 is the circuit diagram of CAN communication circuit in the visual steering of automobile blind spot of the present invention.
Description of reference numerals: 1, automobile ECU, 2, left photographic head, 3, rear photographic head, 4, right photographic head, 5, automobile guiding display screen, 6, automobile batteries, 10, the visual steering of automobile blind spot, 11, pre-amplification circuit, 12, filtering and noise reduction circuit, 13, DSP process circuit, 14, power management module, 15, single-chip microcomputer, 16, CAN communication circuit.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, so that advantages and features of the invention can be easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention being made apparent clear and definite defining.
Consulting shown in Fig. 1, the present invention provides a kind of visual steering of automobile blind spot, and described automobile includes automobile ECU 1, left photographic head 2, rear photographic head 3, right photographic head 4, automobile guiding display screen 5 and automobile batteries 6.
The visual steering 10 of described automobile blind spot includes the pre-amplification circuit 11, filtering and noise reduction circuit 12, DSP process circuit 13 and the single-chip microcomputer 15 that are sequentially connected with, described pre-amplification circuit 11 is connected with left photographic head 2, rear photographic head 3, right photographic head 4, described filtering and noise reduction circuit 12 is connected with automobile guiding display screen 5, described DSP processes circuit 13 and single-chip microcomputer 15 is connected with automobile batteries 6 each through power management module 14, and described single-chip microcomputer 15 is connected with automobile ECU 1 by CAN communication circuit 16.
Consulting shown in Fig. 2, for the circuit diagram of pre-amplification circuit in the present invention 11, adopting model is the difference amplifier of LMV385, and the video signal of input is amplified.
Consulting shown in Fig. 3, for the circuit diagram of filtering and noise reduction circuit 12 in the present invention, this is owing to the holding wire of video signal transmission is long, it is easy to producing interference, so putting amplifying circuit 11 before amplification, be filtered and denoising, reaches the picture effect of the best.
In the present invention, DSP processes the TMS320F2812PGF that circuit 13 adopts the TMS series of TI company, periphery includes clock circuit, reset circuit, RTC circuit etc., the minimum control system of composition DSP, is analyzed the video signal being input to and synthesizes (pretreatment of image includes histogram enhancement, image denoising, image sharpening, Image Edge-Detection and image segmentation etc.).
Consult shown in Fig. 4, circuit diagram for power management module in the present invention 14, the 1117-3.3V manostat adopting AMS company changes into system power supply automobile batteries 12V, owing to the present invention relates to 2 CPU (i.e. DSP and single-chip microcomputer), so adopting two panels manostat to be powered to DSP and single-chip microcomputer respectively.
Consulting shown in Fig. 5, for the circuit diagram of single-chip microcomputer in the present invention 15, single-chip microcomputer adopts 32 bit processor MCU of ST company, by the circuit that the CAN transceiving chip of NXP company designs, carries out carrying out the communication of data with automobile ECU 1.
Consult shown in Fig. 6, for the circuit diagram of CAN communication circuit in the present invention 16, by the MCU CAN interface carried, processing protocol information, obtain useful information.And CAN protocol, as basic automobile agreement, after filtering out useless signal, after doing simple process, the information of motor turning or reversing is fed back to DSP and processes circuit 13.
The work process of the visual steering of automobile blind spot of the present invention is:
S1, single-chip microcomputer 15 carry out data exchange by CAN communication circuit 16 and automobile ECU 1, when obtaining the signal of motor turning, by serial line interface, turn signal are transferred to DSP and process circuit 13；
S2, pre-amplification circuit 11 obtain the video signal that turns to of the left photographic head 2 corresponding with turn signal or rear photographic head 3, and by this video signal by filtering and noise reduction circuit 12 be filtered with noise reduction process after input to DSP process circuit 13；
Picture in video signal is carried out S3, DSP process circuit 13 pretreatment and analysis obtains concrete result.
DSP is processed circuit 13 and is received the order of single-chip microcomputer by serial communication mode, gathers the photographic head data of respective channel, and shows on automobile guiding display screen 5.And the data being accepted automobile ECU by CAN transceiver of single-chip microcomputer, identify that automobile turns left, turns right and three kinds of states of reversing, and transmit data to DSP process circuit.
After recognizing left rotaring signal, left-hand rotation video signal collective data, DSP processes circuit start, gathers the photographic head data on the left side, and shows on automobile guiding display screen 5.
After recognizing right turn signal, right-hand rotation video signal collective data, dsp processor starts, and gathers the photographic head data on the right, and shows on screen.
After recognizing astern signal, no matter turning left and whether right turn signal has, DSP processes circuit and directly gathers backup camera data, and shows on screen.
By the enforcement of the present invention, it has the advantage that 1, the present invention can monitor vehicle in outside rear-view mirror blind area, carries out intelligent decision, and is automatically reminded to (display and sound), prevents lane-change collision；2, to solve the lane change that misty rain sky, the environment such as dim, reflective or new hand's distractibility bring dangerous for the present invention, especially during sleety weather at night；3, the present invention observes the visual angle of side and more strengthens than traditional visual angle seeing rearview mirror, can effectively know anticipation side road conditions；4, cost performance of the present invention is high, has blind spot miscellaneous function, can have vehicle backing backsight function simultaneously；5, the present invention is applicable to various vehicles, practical and easy for installation；6, the present invention can improve driving safety performance and Driving.
Although being described in conjunction with the accompanying embodiments of the present invention; but patent owner can make various deformation or amendment within the scope of the appended claims; as long as less than the protection domain described by the claim of the present invention, all should within protection scope of the present invention.
Claims (5)
- null1. the visual steering of automobile blind spot，Described automobile includes automobile ECU (1)、Left photographic head (2)、Rear photographic head (3)、Right photographic head (4)、Automobile guiding display screen (5) and automobile batteries (6)，It is characterized in that: the visual steering of described automobile blind spot (10) includes the pre-amplification circuit (11) being sequentially connected with、Filtering and noise reduction circuit (12)、DSP processes circuit (13) and single-chip microcomputer (15)，Described pre-amplification circuit (11) and left photographic head (2)、Rear photographic head (3)、Right photographic head (4) connects，Described filtering and noise reduction circuit (12) is connected with automobile guiding display screen (5)，Described DSP processes circuit (13) and single-chip microcomputer (15) is connected with automobile batteries (6) each through power management module (14)，Described single-chip microcomputer (15) is connected with automobile ECU (1) by CAN communication circuit (16).
- 2. the visual steering of automobile blind spot according to claim 1, it is characterized in that: described power management module (14) includes two manostat, one of them manostat connects automobile batteries (6) and DSP processes circuit (13), and other in which manostat connects automobile batteries (6) and single-chip microcomputer (15).
- 3. the visual steering of automobile blind spot according to claim 2, it is characterised in that: described pre-amplification circuit (11) adopts model to be the difference amplifier of LMV385.
- 4. the control method of the visual steering of automobile blind spot according to claim 1-3 any one, it is characterised in that: described control method comprises the following steps,S1, single-chip microcomputer (15) carry out data exchange by CAN communication circuit (16) and automobile ECU (1), when obtaining the signal of motor turning or reversing, by serial line interface, turn signal is transferred to DSP and processes circuit (13)；S2, pre-amplification circuit (11) obtain the left photographic head (2) corresponding with turn signal or the video signal of rear photographic head (3) or right photographic head (4), and by this video signal by filtering and noise reduction circuit (12) be filtered with noise reduction process after input to DSP process circuit (13)；Picture in video signal is carried out pretreatment by S3, DSP process circuit (13) and analysis obtains concrete result.
- 5. control method according to claim 4, it is characterised in that: picture is carried out pretreatment and includes histogram enhancement, image denoising, image sharpening, Image Edge-Detection and image segmentation by described DSP process circuit (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610119378.2A CN105774654A (en) | 2016-03-02 | 2016-03-02 | Car blind spot visible steering system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610119378.2A CN105774654A (en) | 2016-03-02 | 2016-03-02 | Car blind spot visible steering system and control method |
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| CN105774654A true CN105774654A (en) | 2016-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610119378.2A Pending CN105774654A (en) | 2016-03-02 | 2016-03-02 | Car blind spot visible steering system and control method |
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| CN (1) | CN105774654A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944682A (en) * | 2018-05-30 | 2018-12-07 | 东莞市路帆电子科技有限公司 | A kind of vehicle blind zone imaging system and application method |
| CN111052733A (en) * | 2017-08-25 | 2020-04-21 | 日产自动车株式会社 | Surrounding vehicle display method and surrounding vehicle display device |
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| CN108944682A (en) * | 2018-05-30 | 2018-12-07 | 东莞市路帆电子科技有限公司 | A kind of vehicle blind zone imaging system and application method |
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Application publication date: 20160720 |
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