CN110027511B - Glass multi-position pressure sensing platform - Google Patents
Glass multi-position pressure sensing platform Download PDFInfo
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- CN110027511B CN110027511B CN201810979463.5A CN201810979463A CN110027511B CN 110027511 B CN110027511 B CN 110027511B CN 201810979463 A CN201810979463 A CN 201810979463A CN 110027511 B CN110027511 B CN 110027511B
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
- B60S1/38—Wiper blades
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/13—Edge detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/90—Determination of colour characteristics
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20024—Filtering details
- G06T2207/20032—Median filtering
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- Computer Vision & Pattern Recognition (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention relates to a glass multi-position pressure sensing platform, which comprises: the windshield wiper controller is arranged in an instrument panel of the vehicle, is connected with a windshield wiper head of the vehicle and is used for controlling the running and the stopping of the windshield wiper head; the pressure sensors are uniformly arranged at all positions on the wiper head, which are jointed with the vehicle glass, so that when the wiper head runs, the pressure at all positions is respectively measured to obtain all jointing pressures; the pressure evaluation equipment is respectively connected with the pressure sensors and is used for starting the tracking shooting action of a front-end camera of the vehicle on the windshield wiper head when the arithmetic mean value of each bonding pressure is less than or equal to a preset pressure threshold value so as to obtain and output a tracking shooting image; and the contour identification equipment is used for identifying the defect degree of the brush head object in the real-time processing image based on the standard brush head contour and sending a defect alarm signal when the defect degree exceeds a limited amount. By the invention, the electronic auxiliary function of the vehicle is enhanced.
Description
Technical Field
The invention relates to the field of vehicle glass, in particular to a glass multi-position pressure sensing platform.
Background
Glasses are neither crystalline nor amorphous nor polycrystalline nor mixed. The theoretical name is the glass state. The glass state is characterized at normal temperature: short range order, i.e., within a range of several or tens of atoms, the atoms are arranged in order and exhibit crystal characteristics; long-range disorder, i.e., increasing the number of atoms, is a disorder of arrangement, which is similar to liquid. On a macroscopic scale, glass is again a solid substance.
Glass is such a substance. The reason for this structure of glass is: the viscosity of the glass changes too rapidly with temperature and the crystallization rate is too slow. When the temperature is lowered and crystallization is just started, the viscosity becomes very high and the movement of atoms is restricted, which results. Therefore, the glass state is similar to a solid liquid, and atoms in the substance are always in the process of crystallization.
Thus, the atomic positions in the glass appear to be fixed, but there is still a tendency for the forces between the atoms to cause it to rearrange. And not a stable state, unlike the atomic state in paraffin. So, again not crystalline, paraffin is completely solid at normal temperature, whereas glass can be regarded as a very viscous liquid.
Disclosure of Invention
The invention provides a glass multi-position pressure sensing platform, which aims to solve the technical problem that the defect degree of a vehicle windshield wiper head cannot be electronically analyzed in the prior art.
The invention has at least the following two important points:
(1) the method comprises the following steps that a plurality of pressure sensors are introduced and uniformly arranged at each position, which is attached to the glass of a vehicle, on a wiper head, so that when the wiper head runs, the pressure at each position is respectively measured to obtain each attaching pressure, and whether higher-precision image analysis-based wiper head defect degree analysis is started or not is determined based on whether the arithmetic mean value of each attaching pressure is smaller than a limited amount, so that effective reference is provided for timely replacement of the wiper head;
(2) and confirming the pixel points with the brightness values larger than the first preset brightness threshold value and not on the boundary line of any object region as interference points, and also confirming the pixel points with the brightness values smaller than the second preset brightness threshold value and not on the boundary line of any object region as interference points, and further identifying each processing point needing filtering processing from each interference point, thereby improving the image signal processing effect.
According to an aspect of the present invention, there is provided a glass multi-position pressure sensing stage, the stage comprising:
the windshield wiper controller is arranged in an instrument panel of the vehicle, is connected with a windshield wiper head of the vehicle and is used for controlling the running and the stopping of the windshield wiper head; the pressure sensors are uniformly arranged at all positions on the wiper head, which are jointed with the vehicle glass, so that when the wiper head runs, the pressure at all positions is respectively measured to obtain all jointing pressures; the pressure evaluation equipment is respectively connected with the pressure sensors and is used for starting the tracking shooting action of a front-end camera of the vehicle on the windshield wiper head when the arithmetic mean value of each bonding pressure is less than or equal to a preset pressure threshold value so as to obtain and output a tracking shooting image; the instant processing component is connected with the front-end camera and used for receiving the tracking shot image, executing instant processing on the tracking shot image to obtain a corresponding instant processing image and outputting the instant processing image; the profile identification equipment is connected with the instant processing component and used for identifying the incomplete degree of the brush head object in the instant processing image based on the profile of the standard brush head and sending an incomplete alarm signal when the incomplete degree exceeds a limited amount; and the pressure evaluation equipment is also used for ending the tracking shooting action of the front-end camera of the vehicle on the windshield wiper head when the arithmetic mean value of all the bonding pressures is greater than the preset pressure threshold value.
More specifically, in the multi-position glass pressure sensing stage, further comprising:
the liquid crystal display screen is connected with the contour identification equipment and used for receiving the incomplete degree and displaying the incomplete degree in real time; the outline identification device is realized by adopting an SOC chip, and a storage sub-device is further arranged in the outline identification device and used for storing the outline of the standard rain brush head.
More specifically, in the glass multi-position pressure sensing stage: the instant processing component comprises a brightness analysis device which is connected with the front-end camera and used for receiving the tracking shot image, analyzing each object in the tracking shot image to obtain an object area corresponding to each object, confirming pixel points with brightness values larger than a first preset brightness threshold value and not on the boundary line of any object area as interference points, and confirming pixel points with brightness values smaller than a second preset brightness threshold value and not on the boundary line of any object area as interference points; the instant processing component comprises pixel point identification equipment which is connected with the brightness analysis equipment and used for receiving each interference point in the tracking shot image and executing the following operations on each interference point: taking each interference point as a target point, and identifying the target point as a processing point when no pixel point with the brightness value larger than a first preset brightness threshold value or the brightness value smaller than a second preset brightness threshold value exists around the target point; the instant processing component comprises pixel point processing equipment which is respectively connected with the brightness analysis equipment and the pixel point identification equipment and is used for executing the following operations on each processing point in the tracking shot image: determining whether each surrounding pixel point of the processing point is a processing point, and performing weighted median filtering processing on each brightness value of each surrounding pixel point to obtain a processed brightness value of the processing point; the immediate processing component comprises data merging equipment which is respectively connected with the contour identification equipment and the pixel point processing equipment and is used for receiving each processed brightness value of each processing point and each brightness value of each non-processing point, and acquiring an immediate processing image corresponding to the tracking shooting image based on each processed brightness value of each processing point and each brightness value of each non-processing point so as to send the immediate processing image to the contour identification equipment.
More specifically, in the glass multi-position pressure sensing stage: in the pixel point identification device, when a pixel point with a brightness value larger than a first preset brightness threshold value or a pixel point with a brightness value smaller than a second preset brightness threshold value exists around the target point, the target point is identified as a non-processing point.
More specifically, in the glass multi-position pressure sensing stage: and in the pixel point identification equipment, determining each pixel point except each interference point in the tracking shot image as a non-interference point.
More specifically, in the glass multi-position pressure sensing stage: in the pixel processing device, the farther the surrounding pixels are from the processing point, the smaller the weighted value used by the surrounding pixels participating in the weighted median filtering processing is, and when the surrounding pixels are interference points, the smaller the weighted value used by the surrounding pixels participating in the weighted median filtering processing is than the weighted value used by the surrounding pixels which are non-interference points participating in the weighted median filtering processing.
More specifically, in the glass multi-position pressure sensing stage: the pixel point processing equipment consists of signal receiving sub-equipment, signal processing sub-equipment and signal sending sub-equipment, and the signal processing sub-equipment is respectively connected with the signal receiving sub-equipment and the signal sending sub-equipment.
More specifically, in the glass multi-position pressure sensing stage: in the pixel point identification device, the second preset brightness threshold is smaller than the first preset brightness threshold.
Drawings
Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
fig. 1 is a schematic diagram of a vehicle glass processed by a glass multi-position pressure sensing stage according to an embodiment of the present invention.
Detailed Description
Embodiments of the glass multi-position pressure sensing stage of the present invention will now be described in detail with reference to the accompanying drawings.
The simple classification of glass is mainly divided into flat glass and deep-processed glass. Sheet glass is mainly classified into three types: namely, a pulling-up method flat glass (divided into a grooved glass and a non-grooved glass), a flat pulling method flat glass and a float glass. Because the float glass has a uniform thickness and flat and parallel upper and lower surfaces, and is affected by factors such as high labor productivity and easy management, the float glass is becoming the mainstream of glass manufacturing methods.
The main raw materials for glass production comprise a glass forming body, a glass modifier and a glass intermediate, and the balance is auxiliary raw materials. The main raw materials are introduced into the glass forming network oxides, intermediate oxides and extranet oxides; the auxiliary raw materials comprise a clarifying agent, a fluxing agent, an opacifier, a coloring agent, a decoloring agent, an oxidant, a reducing agent and the like.
In order to overcome the defects, the invention builds a glass multi-position pressure sensing platform and effectively solves the corresponding technical problem.
Fig. 1 is a schematic diagram of a vehicle glass processed by a glass multi-position pressure sensing stage according to an embodiment of the present invention. Wherein, 1 is a package of the vehicle glass, 2 is a main body of the vehicle glass, and A on the left and right sides is a horizontal installation mark point of the vehicle glass.
A glass multi-position pressure sensing stage according to an embodiment of the present invention is shown comprising:
the windshield wiper controller is arranged in an instrument panel of the vehicle, is connected with a windshield wiper head of the vehicle and is used for controlling the running and the stopping of the windshield wiper head;
the pressure sensors are uniformly arranged at all positions on the wiper head, which are jointed with the vehicle glass, so that when the wiper head runs, the pressure at all positions is respectively measured to obtain all jointing pressures;
the pressure evaluation equipment is respectively connected with the pressure sensors and is used for starting the tracking shooting action of a front-end camera of the vehicle on the windshield wiper head when the arithmetic mean value of each bonding pressure is less than or equal to a preset pressure threshold value so as to obtain and output a tracking shooting image;
the instant processing component is connected with the front-end camera and used for receiving the tracking shot image, executing instant processing on the tracking shot image to obtain a corresponding instant processing image and outputting the instant processing image;
the profile identification equipment is connected with the instant processing component and used for identifying the incomplete degree of the brush head object in the instant processing image based on the profile of the standard brush head and sending an incomplete alarm signal when the incomplete degree exceeds a limited amount;
and the pressure evaluation equipment is also used for ending the tracking shooting action of the front-end camera of the vehicle on the windshield wiper head when the arithmetic mean value of all the bonding pressures is greater than the preset pressure threshold value.
Next, the detailed structure of the glass multi-position pressure sensing stage according to the present invention will be further described.
In the glass multi-position pressure sensing stage, further comprising:
the liquid crystal display screen is connected with the contour identification equipment and used for receiving the incomplete degree and displaying the incomplete degree in real time;
the outline identification device is realized by adopting an SOC chip, and a storage sub-device is further arranged in the outline identification device and used for storing the outline of the standard rain brush head.
In the glass multi-position pressure sensing stage: the instant processing component comprises a brightness analysis device which is connected with the front-end camera and used for receiving the tracking shot image, analyzing each object in the tracking shot image to obtain an object area corresponding to each object, confirming pixel points with brightness values larger than a first preset brightness threshold value and not on the boundary line of any object area as interference points, and confirming pixel points with brightness values smaller than a second preset brightness threshold value and not on the boundary line of any object area as interference points;
the instant processing component comprises pixel point identification equipment which is connected with the brightness analysis equipment and used for receiving each interference point in the tracking shot image and executing the following operations on each interference point: taking each interference point as a target point, and identifying the target point as a processing point when no pixel point with the brightness value larger than a first preset brightness threshold value or the brightness value smaller than a second preset brightness threshold value exists around the target point;
the instant processing component comprises pixel point processing equipment which is respectively connected with the brightness analysis equipment and the pixel point identification equipment and is used for executing the following operations on each processing point in the tracking shot image: determining whether each surrounding pixel point of the processing point is a processing point, and performing weighted median filtering processing on each brightness value of each surrounding pixel point to obtain a processed brightness value of the processing point;
the immediate processing component comprises data merging equipment which is respectively connected with the contour identification equipment and the pixel point processing equipment and is used for receiving each processed brightness value of each processing point and each brightness value of each non-processing point, and acquiring an immediate processing image corresponding to the tracking shooting image based on each processed brightness value of each processing point and each brightness value of each non-processing point so as to send the immediate processing image to the contour identification equipment.
In the glass multi-position pressure sensing stage: in the pixel point identification device, when a pixel point with a brightness value larger than a first preset brightness threshold value or a pixel point with a brightness value smaller than a second preset brightness threshold value exists around the target point, the target point is identified as a non-processing point.
In the glass multi-position pressure sensing stage: and in the pixel point identification equipment, determining each pixel point except each interference point in the tracking shot image as a non-interference point.
In the glass multi-position pressure sensing stage: in the pixel processing device, the farther the surrounding pixels are from the processing point, the smaller the weighted value used by the surrounding pixels participating in the weighted median filtering processing is, and when the surrounding pixels are interference points, the smaller the weighted value used by the surrounding pixels participating in the weighted median filtering processing is than the weighted value used by the surrounding pixels which are non-interference points participating in the weighted median filtering processing.
In the glass multi-position pressure sensing stage: the pixel point processing equipment consists of signal receiving sub-equipment, signal processing sub-equipment and signal sending sub-equipment, and the signal processing sub-equipment is respectively connected with the signal receiving sub-equipment and the signal sending sub-equipment.
In the glass multi-position pressure sensing stage: in the pixel point identification device, the second preset brightness threshold is smaller than the first preset brightness threshold.
In addition, the instant processing component is a customized SOC chip. System on Chip, called SOC for short, is also a System on Chip. From a narrow sense, the system is the chip integration of the core of an information system, and key components of the system are integrated on one chip; in a broad sense, an SOC is a micro-miniature system, and if a Central Processing Unit (CPU) is the brain, the SOC is a system including the brain, heart, eyes, and hands. The academia at home and abroad generally tends to define the SOC as integrating a microprocessor, an analog IP core, a digital IP core and a memory (or off-chip memory control interface) on a single chip, which is usually custom-made or standard product oriented to a specific application.
The basic content of the SOC definition is mainly two-fold: one is his composition and the other is his forming process. The system-level chip can be composed of a system-level chip control logic module, a microprocessor/microcontroller CPU core module, a digital signal processor DSP module, an embedded memory module, an interface module for communicating with the outside, an analog front-end module containing ADC/DAC, a power supply and power consumption management module, a radio frequency front-end module, user defined logic (which can be realized by FPGA or ASIC) and a micro-electro-mechanical module for a wireless SOC, and more importantly, a SOC chip is embedded with a basic software (RDOS or COS and other application software) module or loadable user software and the like.
By adopting the glass multi-position pressure sensing platform, aiming at the technical problem that the vehicle windshield wiper head defect degree can not be electronically analyzed in the prior art, the glass multi-position pressure sensing platform is uniformly arranged at each position, which is jointed with the vehicle glass, on the windshield wiper head by introducing the plurality of pressure sensors, so that the pressure at each position is respectively measured when the windshield wiper head runs, so as to obtain each jointing pressure, and whether to start the higher-precision image analysis-based windshield wiper head defect degree analysis is determined based on whether the arithmetic mean value of each jointing pressure is less than a limited value, so as to provide effective reference for the timely replacement of the windshield wiper head; more importantly, the method also determines the pixel points with the brightness values larger than the first preset brightness threshold value and not on the boundary line of any object region as interference points, and is also used for determining the pixel points with the brightness values smaller than the second preset brightness threshold value and not on the boundary line of any object region as interference points, and further identifies each processing point needing filtering processing from each interference point, thereby improving the image signal processing effect.
It is to be understood that while the present invention has been described in conjunction with the preferred embodiments thereof, it is not intended to limit the invention to those embodiments. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the invention without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (5)
1. A glass multi-position pressure sensing stage, the stage comprising:
the windshield wiper controller is arranged in an instrument panel of the vehicle, is connected with a windshield wiper head of the vehicle and is used for controlling the running and the stopping of the windshield wiper head;
the pressure sensors are uniformly arranged at all positions on the wiper head, which are jointed with the vehicle glass, so that when the wiper head runs, the pressure at all positions is respectively measured to obtain all jointing pressures;
the pressure evaluation equipment is respectively connected with the pressure sensors and is used for starting the tracking shooting action of a front-end camera of the vehicle on the windshield wiper head when the arithmetic mean value of each bonding pressure is less than or equal to a preset pressure threshold value so as to obtain and output a tracking shooting image;
the instant processing component is connected with the front-end camera and used for receiving the tracking shot image, executing instant processing on the tracking shot image to obtain a corresponding instant processing image and outputting the instant processing image;
the profile identification equipment is connected with the instant processing component and used for identifying the incomplete degree of the brush head object in the instant processing image based on the profile of the standard brush head and sending an incomplete alarm signal when the incomplete degree exceeds a limited amount;
the pressure evaluation equipment is further used for ending the tracking shooting action of the front-end camera of the vehicle on the windshield wiper head when the arithmetic mean value of each bonding pressure is larger than the preset pressure threshold value;
the liquid crystal display screen is connected with the contour identification equipment and used for receiving the incomplete degree and displaying the incomplete degree in real time;
the outline identification device is realized by adopting an SOC chip, and a storage sub-device is also arranged in the outline identification device and used for storing the outline of the standard brush head;
the instant processing component comprises a brightness analysis device which is connected with the front-end camera and used for receiving the tracking shot image, analyzing each object in the tracking shot image to obtain an object area corresponding to each object, confirming pixel points with brightness values larger than a first preset brightness threshold value and not on the boundary line of any object area as interference points, and confirming pixel points with brightness values smaller than a second preset brightness threshold value and not on the boundary line of any object area as interference points;
the instant processing component comprises pixel point identification equipment which is connected with the brightness analysis equipment and used for receiving each interference point in the tracking shot image and executing the following operations on each interference point: taking each interference point as a target point, and identifying the target point as a processing point when no pixel point with the brightness value larger than a first preset brightness threshold value or the brightness value smaller than a second preset brightness threshold value exists around the target point;
the instant processing component comprises pixel point processing equipment which is respectively connected with the brightness analysis equipment and the pixel point identification equipment and is used for executing the following operations on each processing point in the tracking shot image: determining whether each surrounding pixel point of the processing point is a processing point, and performing weighted median filtering processing on each brightness value of each surrounding pixel point to obtain a processed brightness value of the processing point;
the immediate processing component comprises data merging equipment which is respectively connected with the contour identification equipment and the pixel point processing equipment and is used for receiving each processed brightness value of each processing point and each brightness value of each non-processing point, and acquiring an immediate processing image corresponding to the tracking shooting image based on each processed brightness value of each processing point and each brightness value of each non-processing point so as to send the immediate processing image to the contour identification equipment.
2. The glass multi-position pressure sensing stage of claim 1, wherein:
in the pixel point identification device, when a pixel point with a brightness value larger than a first preset brightness threshold value or a pixel point with a brightness value smaller than a second preset brightness threshold value exists around the target point, the target point is identified as a non-processing point.
3. The glass multi-position pressure sensing stage of claim 2, wherein:
and in the pixel point identification equipment, determining each pixel point except each interference point in the tracking shot image as a non-interference point.
4. The glass multi-position pressure sensing stage of claim 3, wherein:
the pixel point processing equipment consists of signal receiving sub-equipment, signal processing sub-equipment and signal sending sub-equipment, and the signal processing sub-equipment is respectively connected with the signal receiving sub-equipment and the signal sending sub-equipment.
5. The glass multi-position pressure sensing stage of claim 4, wherein:
in the pixel point identification device, the second preset brightness threshold is smaller than the first preset brightness threshold.
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| CN110775018A (en) * | 2019-10-31 | 2020-02-11 | 安徽百宏达汽车电器有限公司 | Electric windscreen wiper with fault self-checking system and self-checking method thereof |
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| US9616851B2 (en) * | 2011-06-17 | 2017-04-11 | Robert Bosch Gmbh | Method and apparatus for recognizing directional structures on a window pane of a vehicle |
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| DE10254684A1 (en) * | 2002-11-22 | 2004-06-03 | Valeo Schalter Und Sensoren Gmbh | System and process to monitor the condition of windshield wiper rubber blades in a motor vehicle, has optical sensor and control unit to detect streaks or marks on the windshield |
| CN101378934A (en) * | 2006-03-08 | 2009-03-04 | 利奥波德·科世达责任有限股份公司 | Camera arrangement for a motor vehicle |
| JP2016168987A (en) * | 2015-03-16 | 2016-09-23 | 日産自動車株式会社 | Vehicular photographing device |
| CN107131995A (en) * | 2017-06-30 | 2017-09-05 | 吉林大学 | A kind of Wiper pressing force distribution air tunnel testing device and wiper control method |
| CN107985263A (en) * | 2017-12-11 | 2018-05-04 | 上海禹点电子科技有限公司 | The scraping blade control method and system of vehicle wiper |
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