CN113895402A - Front-baffle type intelligent windscreen wiper control device - Google Patents
Front-baffle type intelligent windscreen wiper control device Download PDFInfo
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- CN113895402A CN113895402A CN202111200375.9A CN202111200375A CN113895402A CN 113895402 A CN113895402 A CN 113895402A CN 202111200375 A CN202111200375 A CN 202111200375A CN 113895402 A CN113895402 A CN 113895402A
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- substrate
- windscreen wiper
- friction
- control signal
- sensing
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- 239000000758 substrate Substances 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 11
- 238000002834 transmittance Methods 0.000 claims description 6
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- 238000002955 isolation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 238000001020 plasma etching Methods 0.000 claims description 2
- 230000001939 inductive effect Effects 0.000 claims 1
- 229910052709 silver Inorganic materials 0.000 claims 1
- 239000004332 silver Substances 0.000 claims 1
- 238000007493 shaping process Methods 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- -1 polyethylene terephthalate Polymers 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000004205 dimethyl polysiloxane Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
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- 239000011521 glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 239000002042 Silver nanowire Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
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Images
Classifications
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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
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
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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
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
- B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
- B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a control device of a front-blocking intelligent windscreen wiper. The sensing device is structurally provided with an upper electrode of a flexible customized-color transparent substrate, a transparent friction layer, a lower electrode of the transparent substrate and a high-strength substrate which are sequentially arranged from top to bottom; the control signal device comprises an amplifying and shaping circuit consisting of a secondary amplifier and a signal processing circuit taking a micro processing unit (MCU) as a core; the transmission device is controlled by a control signal output by the control signal device, so that the oscillating frequency of the windscreen wiper is controlled through the rainfall sensing frequency, and the effect of intelligently adjusting the speed of the windscreen wiper is achieved. The light-transmitting pressure sensing device can completely replace the front windshield of the automobile, so that the automobile has a sensing function and realizes personalized customization; the sensor is combined with a windscreen wiper, the pressure of raindrops actually falling on the sensor is sensed, and compared with the traditional infrared sensing, the sensor receives signals more comprehensively, directly and efficiently.
Description
Technical Field
The invention relates to the field of sensing devices, in particular to a front-stop intelligent windscreen wiper control device.
Background
With the explosion of the internet and the advancement of technology, the explosion of artificial intelligence technology, intelligent manufacturing and intelligent terminals become a popular trend. The automobile is used as an important carrier of urban transportation in modern society, and develops towards more and more intelligence in the development of more than ten years, various intelligent vehicle-mounted terminals are developed, such as a satellite intelligent vehicle-mounted terminal, a mileage positioning technology, a voice regulation and control technology and the like, so that the appeal of a consumer to the automobile does not stay in a walking-replacing stage any more, and higher driving experience and driving comfort experience are pursued. The traditional automobile driving is gradually transited from the manual clutch with complex operation to the automatic gear driving, and the frequent gear shifting operation of the left foot and the hand of a driver is released; the automatic cruise technology solves the problem that a driver holds both hands on a steering wheel, and automobile development gradually and completely liberates both hands and feet of the driver.
In order to further simplify the operation and labor of a driver, an automatic wiper control system is developed, a specific area of an existing rainfall sensor is at a position of a bracket where a rearview mirror is attached to a front windshield or other positions, the rainfall sensor utilizes an optical principle that infrared wave bands are adopted, raindrops falling on the glass can cause imbalance of reflected light, and the sensor can transmit sensed rainfall information to a vehicle-mounted computer, so that the working frequency of the wiper is adjusted.
The invention provides a front-windshield intelligent windscreen wiper control device, which comprises a front-windshield glass type sensing device, a control signal device and a transmission device, wherein the sensing device can output electric signals with different frequencies according to the magnitude of rain, the control signal device measures the frequency of raindrops, converts the frequency of the raindrops into control signals to be output, and controls a motor of a rotating device to rotate, so that the purpose that the oscillating speed of the windscreen wiper is automatically adjusted according to the magnitude of rain is achieved, the intellectualization of the windscreen wiper is realized, and a driver does not need to manually adjust the oscillating speed. The rainfall sensor covers the whole area of the front windshield, senses the pressure of raindrops actually falling on the sensor, and receives signals more comprehensively and directly compared with the traditional infrared sensing.
Disclosure of Invention
Against the background, the invention provides a front-end intelligent windscreen wiper control device.
In order to achieve the purpose, the invention provides the following scheme:
the utility model provides a preceding fender formula intelligence wiper controlling means, includes printing opacity pressure sensing device, control signal device and transmission:
light transmission pressure sensing device: the automobile front windshield type sensing device can be used for collecting raindrop pressure signals, has extremely high transmittance, can completely replace the traditional front windshield, can convert pressure signals of raindrops falling on a sensor into electric signals, and is self-driven sensing; the structure of the flexible color-customized light-transmitting substrate comprises an upper electrode, a transparent friction layer, a transparent lower electrode and a high-strength substrate which are sequentially arranged from top to bottom, so that the strength is ensured.
Alternatively, the transparent upper and lower electrodes are ultrathin metal films prepared on a transparent substrate, and maintain excellent light transmittance.
Optionally, the two transparent friction layers are two transparent materials which can generate charge transfer by mutual friction.
A control signal device: comprises an amplifying and shaping circuit and a signal processing, wherein the amplifying and shaping circuit is composed of a second-stage amplifying circuit, a first-stage amplifier amplifies the raindrop signal amplitude output by a sensor to the processing range of a microprocessing unit (MCU), a second-stage amplifier forms a zero-crossing comparator to generate a square wave signal,
the transmission device comprises: the transmission part is mainly realized by controlling a motor, the motor controls a transmission structure to realize the back-and-forth periodic motion of the wiper, and a control signal of the motor is output by a micro processing unit (MCU) according to the frequency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic diagram of a sensing device according to an embodiment of the present invention and a graph showing the relationship between the wavelength and transmittance of light;
FIG. 2 is a diagram illustrating a relationship between a level of rainfall sensed by the sensing device and a voltage output signal according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a signal transmission process of a control signal device according to an embodiment of the present invention;
FIG. 4 is a circuit diagram of an amplifying and shaping circuit of a control signal device according to an embodiment of the present invention;
FIG. 5 shows simulation results of the amplifying and shaping circuit of the control signal device according to the embodiment of the present invention;
FIG. 6 is a flowchart of a frequency detection procedure of the control signal device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the sensing device can be used for collecting raindrop pressure signals, has extremely high transmittance, is a film type sensing device for a front windshield of an automobile, can convert pressure signals of raindrops falling on a sensor into electric signals, and is self-driven sensing; the structure of the color-making flexible transparent substrate comprises an upper electrode of a flexible color-making transparent substrate, a transparent friction layer, a lower electrode of the transparent substrate and a high-strength substrate which are sequentially arranged from top to bottom.
Optionally, the flexible customized color light-transmitting substrate needs to deform when raindrops fall on the flexible customized color light-transmitting substrate, contact is caused between the friction layers, and colors, such as brown and black, can be customized according to needs of different vehicle owners.
Preferably, the transparent upper and lower electrode substrates are the same, the ultrahigh light transmission is realized by adopting a polyethylene terephthalate (PET) layer as a base material and uniformly coating a 50-nanometer single-layer silver nanowire coating, and compared with a photoetching metal grid transparent electrode, the ultrahigh light transmission is low in cost and convenient for large-scale production.
Preferably, Polydimethylsiloxane (PDMS) is used as an intermediate friction layer, has a self-adhesive property, is directly attached to the upper electrode, and is in friction contact with the lower polyethylene terephthalate (PET) layer to generate charge transfer;
preferably, the key technology is that the contact friction surfaces of Polydimethylsiloxane (PDMS) and a lower polyethylene terephthalate (PET) layer need to be roughened by plasma etching, so that the two friction layers can be well contacted and separated, and compared with the situation that an isolation gasket and an isolation bead are added between the contact friction surfaces, the method is more suitable for large-area production.
Preferably, the high-strength substrate is made of tempered glass which is conventionally used in automobiles.
The light transmittance of the sensing device is not lower than 85.5% through characterization, as shown in figure 1; the greater the amount of rain, the higher the frequency of raindrops falling on the sensing device, and the higher the frequency of the sensing device feedback voltage signal, as shown in fig. 2.
The control signal part of the control signal device consists of an amplifying and shaping circuit and a signal processing device. The whole process of collecting raindrop signals and outputting control signals is shown in fig. 3; the amplification and shaping circuit is composed of a two-stage amplification circuit, as shown in fig. 4: the first-stage amplifier amplifies the raindrop signal amplitude output by the sensor to the processing range of a micro processing unit (MCU), and the second-stage amplifier forms a zero-crossing comparator to generate a square wave signal; simulating a circuit, wherein an input signal is a frequency modulation signal with the amplitude of 0.1V, an amplifier amplifies the signal by 20 times, and finally a square wave signal with the amplitude of 3.3V is output, as shown in FIG. 5; the frequency measurement in the signal processing is realized by an external interrupt and a timer function integrated by a microprocessor, and a program flow chart is shown in fig. 6, when a first external interrupt (rising edge trigger) comes, the timer is started, meanwhile, the counter is cleared, the n-th interrupt comes (the pulse number n can be set by itself), and the count value of the counter is obtained when the n-th interrupt comes. The time to count a number is known by the program and the time period of a pulse can be calculated, the reciprocal of which is the frequency.
And finally, the device is combined with a motor control transmission device, and the periodic motion of the windscreen wiper is controlled according to a control signal output by a micro-processing unit (MCU).
Claims (6)
1. A control device for a front-blocking intelligent windscreen wiper comprises a light-transmitting pressure sensing device, a control signal device and a transmission device.
2. The sensor device of claim 1, which is an extremely high transmittance automotive front windshield type sensor device for comprehensively, efficiently and directly acquiring raindrop pressure signals, instead of a conventional automotive front windshield, and comprises: the flexible customized color light-transmitting substrate comprises an upper electrode of a flexible customized color light-transmitting substrate, a friction layer material, a lower electrode of a transparent and friction layer substrate and a high-strength substrate which are sequentially arranged from top to bottom.
3. The device of claim 1, wherein the control signal means is signal processed by a micro processing unit (MCU).
4. The sensor device structure of claim 2, wherein the uppermost flexible transparent substrate is capable of deforming when pressure is applied, thereby inducing contact between the friction layers and charge transfer, and the substrate is capable of customized color adjustment.
5. The sensing device structure of claim 2, wherein the upper and lower electrodes are coated with nanoscale silver wires.
6. The structure of the sensor device according to claim 2, wherein the friction layer material and the transparent and friction layer substrate are a pair of friction pairs for generating charge transfer by contact friction, and the friction contact surfaces are processed by plasma etching without an isolation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111200375.9A CN113895402A (en) | 2021-10-14 | 2021-10-14 | Front-baffle type intelligent windscreen wiper control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111200375.9A CN113895402A (en) | 2021-10-14 | 2021-10-14 | Front-baffle type intelligent windscreen wiper control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113895402A true CN113895402A (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111200375.9A Pending CN113895402A (en) | 2021-10-14 | 2021-10-14 | Front-baffle type intelligent windscreen wiper control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113895402A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203851062U (en) * | 2014-01-24 | 2014-09-24 | 国家纳米科学中心 | Contact-separation friction nano generator |
| US20160250998A1 (en) * | 2013-02-10 | 2016-09-01 | Knorr-Bremse Gesellschaft Mitbeschränkter Haftung | Control unit for a windscreen wiper system for a rail vehicle and method for operating a windscreen wiper system for a rail vehicle |
| CN108001411A (en) * | 2016-10-31 | 2018-05-08 | 比亚迪股份有限公司 | Windshield wiper system, vehicle, rain sensor and scrape water controling method |
| CN207481856U (en) * | 2017-10-09 | 2018-06-12 | 苏州大学 | A kind of automobile intelligent wiper |
| CN108819906A (en) * | 2018-06-20 | 2018-11-16 | 苏州博学智能科技有限公司 | A kind of automobile intelligent wiper and control method |
| CN109141687A (en) * | 2017-06-15 | 2019-01-04 | 北京纳米能源与系统研究所 | Transparent flexible touch sensation sensor, method for sensing and tactile sensor array |
| CN110365122A (en) * | 2019-06-03 | 2019-10-22 | 杭州电子科技大学 | Self energizing wireless sensing system based on friction nanometer power generator |
| CN112072946A (en) * | 2020-08-28 | 2020-12-11 | 广东工业大学 | Liquid drop power generation device and using method thereof |
-
2021
- 2021-10-14 CN CN202111200375.9A patent/CN113895402A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160250998A1 (en) * | 2013-02-10 | 2016-09-01 | Knorr-Bremse Gesellschaft Mitbeschränkter Haftung | Control unit for a windscreen wiper system for a rail vehicle and method for operating a windscreen wiper system for a rail vehicle |
| CN203851062U (en) * | 2014-01-24 | 2014-09-24 | 国家纳米科学中心 | Contact-separation friction nano generator |
| CN108001411A (en) * | 2016-10-31 | 2018-05-08 | 比亚迪股份有限公司 | Windshield wiper system, vehicle, rain sensor and scrape water controling method |
| CN109141687A (en) * | 2017-06-15 | 2019-01-04 | 北京纳米能源与系统研究所 | Transparent flexible touch sensation sensor, method for sensing and tactile sensor array |
| CN207481856U (en) * | 2017-10-09 | 2018-06-12 | 苏州大学 | A kind of automobile intelligent wiper |
| CN108819906A (en) * | 2018-06-20 | 2018-11-16 | 苏州博学智能科技有限公司 | A kind of automobile intelligent wiper and control method |
| CN110365122A (en) * | 2019-06-03 | 2019-10-22 | 杭州电子科技大学 | Self energizing wireless sensing system based on friction nanometer power generator |
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Non-Patent Citations (1)
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