WO2018016916A1 - Capteur de pluie - Google Patents

Capteur de pluie Download PDF

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Publication number
WO2018016916A1
WO2018016916A1 PCT/KR2017/007890 KR2017007890W WO2018016916A1 WO 2018016916 A1 WO2018016916 A1 WO 2018016916A1 KR 2017007890 W KR2017007890 W KR 2017007890W WO 2018016916 A1 WO2018016916 A1 WO 2018016916A1
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WO
WIPO (PCT)
Prior art keywords
electrode
sensing electrode
substrate
sensing
branch
Prior art date
Application number
PCT/KR2017/007890
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English (en)
Korean (ko)
Inventor
이정오
Original Assignee
엘지이노텍 주식회사
Priority date (The priority date 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 date listed.)
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Application filed by 엘지이노텍 주식회사 filed Critical 엘지이노텍 주식회사
Priority to CN201790001100.3U priority Critical patent/CN211001244U/zh
Publication of WO2018016916A1 publication Critical patent/WO2018016916A1/fr

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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
    • B60S1/0825—Capacitive rain sensor
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/023—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance where the material is placed in the field of a coil
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/048—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance for determining moisture content of the material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity

Definitions

  • the present invention relates to a rain sensor, and more particularly to a rain sensor that can accurately detect the amount of rain (rain) by using a change in impedance according to the characteristics of the carbon micro coil (CMC).
  • CMC carbon micro coil
  • a windshield wiper is installed on the front windshield of the vehicle to remove raindrops.
  • the wiper is a speed control step by step depending on the degree of rain drops.
  • the speed control of the wiper is adjusted in a few few steps. Accordingly, the conventional wiper speed control system has a disadvantage that the speed of the wiper is not controlled according to the exact amount of raindrops.
  • a rain sensor composed of a light emitting element and a light receiving element is disposed on the wind shield.
  • the rain sensor is disposed to be inclined on the surface of the wind shield, thereby minimizing the influence of light reflected from the surface of the wind shield, and receiving only the optical signal reflected from the raindrop to increase the rain sensing efficiency.
  • the light reflected directly from the wind shield is out of the light receiving range of the light receiving element, and only the light reflected from the raindrops falls within the light receiving range of the light receiving element.
  • the rain sensor according to the prior art as described above the light generated from the light emitting device is also directly absorbed by the light receiving device occurs, there is a problem that it is difficult to accurately detect the amount of raindrops. That is, the light generated from the light emitting device is spread over a predetermined angle range. In this case, even when the rain sensor is disposed to have a predetermined inclination angle with respect to the window shield surface, some light is directly provided to the light receiving element in addition to the light falling out of the wind shield. Accordingly, there is a problem that the raindrop detection efficiency is lowered due to the light provided directly from the light emitting device to the light receiving device.
  • the rain sensor as described above is affected by the ambient light caused by the headlights of the surrounding vehicles, etc., there is a problem that the operation reliability due to such interference light is degraded.
  • a rain sensor and a wiper driving device including the same may be provided by detecting a change in impedance of a carbon micro coil due to raindrops falling on a windshield of a vehicle and determining rainfall and rainfall.
  • the embodiment provides a rain sensor and a wiper driving apparatus including the same to determine whether the rainfall and rainfall using a device including a carbon micro coil, and accordingly to control whether the wiper is driven and the driving speed of the wiper. .
  • an embodiment according to the present invention provides a rain sensor and a wiper driving device including the same, which can accurately detect a large amount of raindrops as well as a very small amount of raindrops through a pattern design of a sensing electrode.
  • Rain sensor is a substrate; A first sensing electrode disposed on the substrate; And a second sensing electrode disposed on the substrate and spaced apart from the first sensing electrode by a predetermined distance, wherein a distance between the first sensing electrode and the second sensing electrode changes in one direction of the substrate.
  • At least one of the first sensing electrode and the second sensing electrode is disposed to extend in the one direction on the substrate, and the width gradually increases or decreases toward the one direction.
  • first sensing electrode and the second sensing electrode have a shape that is symmetric with each other.
  • the first sensing electrode has a curved surface that faces the surface of the second sensing electrode.
  • the second sensing electrode may have a curved surface that faces the curved surface of the first sensing electrode.
  • the first sensing electrode may include a first body extending in the one direction and a first branch electrode and a second branch electrode protruding from the first body in the direction of the second sensing electrode and spaced apart from each other by a predetermined interval.
  • the second sensing electrode may include a second body extending in the one direction, a third branch electrode and a fourth protruding from the second body toward the first sensing electrode, and spaced apart from each other by a predetermined distance.
  • a branch electrode wherein the third branch electrode is disposed between the first branch electrode and the second branch electrode, the fourth branch electrode is disposed below the second branch electrode, and the first branch electrode and the first branch electrode;
  • the first spacing between the three branch electrodes, the second spacing between the third and second branch electrodes, and the third spacing between the second and fourth branch electrodes are all different.
  • the display device may further include a reaction layer disposed on the substrate, the reaction layer filling the first sensing electrode and the second sensing electrode, wherein the reaction layer includes a change in at least one of a force and a dielectric constant generated by rainfall.
  • the impedance characteristic changes according to the first and second sensing electrodes, and outputs the sensing signal according to the change in the impedance characteristic of the reaction layer.
  • a driver disposed under the substrate, connected to the first and second sensing electrodes, the driver for processing the output sensing signal; And a protective layer surrounding the substrate, the driving unit, and the reaction layer.
  • reaction layer includes a carbon micro coil material.
  • the wiper drive according to the embodiment is a front glass;
  • a sensor unit attached to the first surface of the windshield and whose impedance is changed by an object in contact with the second surface of the windshield;
  • a control unit configured to receive a detection signal according to a change amount of the impedance value through the sensor unit, determine whether the rainfall is based on the received detection signal, and drive a wiper according to the determined rainfall.
  • At least one of the first sensing electrode and the second sensing electrode is disposed to extend in the one direction on the substrate, and the width gradually increases or decreases toward the one direction.
  • first sensing electrode and the second sensing electrode have a shape that is symmetric with each other.
  • the first sensing electrode has a curved surface that faces the surface of the second sensing electrode.
  • the second sensing electrode may have a curved surface that faces the curved surface of the first sensing electrode.
  • the first sensing electrode may include a first body extending in the one direction and a first branch electrode and a second branch electrode protruding from the first body in the direction of the second sensing electrode and spaced apart from each other by a predetermined interval.
  • the second sensing electrode may include a second body extending in the one direction, a third branch electrode and a fourth protruding from the second body toward the first sensing electrode, and spaced apart from each other by a predetermined distance.
  • a branch electrode wherein the third branch electrode is disposed between the first branch electrode and the second branch electrode, the fourth branch electrode is disposed below the second branch electrode, and the first branch electrode and the first branch electrode;
  • the first spacing between the three branch electrodes, the second spacing between the third and second branch electrodes, and the third spacing between the second and fourth branch electrodes are all different.
  • reaction layer includes a carbon micro coil material.
  • the controller may further include a rainfall detector configured to output an output value corresponding to a difference value between a first frequency and a second preset frequency according to a change in the impedance value of the sensor unit, and an output value output through the rainfall detector. And determining the rainfall and rainfall, and determining a wiper driving condition according to the determination result, wherein the first frequency is changed in response to a change in inductance value of the carbon micro coil according to the rainfall and rainfall. do.
  • a rainfall detector configured to output an output value corresponding to a difference value between a first frequency and a second preset frequency according to a change in the impedance value of the sensor unit, and an output value output through the rainfall detector.
  • the rainfall detection unit may include a first frequency generator for outputting the first frequency having an oscillation frequency corresponding to a change in impedance of the sensor unit, and a second frequency for outputting the second frequency corresponding to a preset reference oscillation frequency. And a difference frequency generator for outputting a difference value between the first frequency and the second frequency, and a filter for filtering the difference value output through the difference frequency generator within a predetermined filtering region.
  • the filtering region of the filter is set based on a first threshold value for a change in inductance value of the carbon microcoil according to the occurrence of the rainfall, and the determining unit may be configured to store the first threshold value and the Subsequently, the substances causing the difference are distinguished based on a second threshold value for the change of the inductance value for the substance.
  • the embodiment by determining the rainfall and rainfall using a carbon micro coil, it is possible to provide a rain sensor of the characteristics (response characteristics, precision, accuracy, power consumption, miniaturization, etc.) differentiated from the conventional optical method. Can be.
  • surfaces facing each other may be formed in a curved surface, so that the sensing region can be maximized in the same sensor area.
  • FIG. 1 is a side view showing a state in which the rain sensor is mounted on the windshield of the vehicle according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view showing a detailed structure of the rain sensor shown in FIG.
  • FIG. 3 is a view showing the reaction layer shown in FIG.
  • FIG. 4 is a plan view of a sensing electrode according to a first exemplary embodiment of the present invention.
  • FIG. 5 is a cross-sectional view taken along the direction A of FIG. 4.
  • FIG. 6 is a cross-sectional view taken along the direction B of FIG. 4.
  • FIG. 7 is a cross-sectional view taken along the direction C of FIG. 4.
  • FIG. 8 is a view for explaining the manufacturing method of the rain sensor 20 shown in FIG.
  • FIG. 9 is a plan view of a sensing electrode according to a second exemplary embodiment of the present invention.
  • FIG. 10 is a plan view of a sensing electrode according to a third exemplary embodiment of the present invention.
  • FIG. 11 is a view illustrating a wiper driving apparatus according to an embodiment.
  • FIG. 12 illustrates the characteristics of a carbon micro coil according to an embodiment of the present invention.
  • FIG. 13 is a diagram illustrating a configuration of the rainfall detector 25 shown in FIG. 11.
  • 17 is a diagram illustrating a change of a difference frequency value according to the second embodiment of the present invention.
  • FIG. 18 is a flowchart illustrating a step-by-step method of driving a wiper drive according to an embodiment of the present invention.
  • Combinations of each block and each step of the flowchart in the accompanying drawings may be performed by computer program instructions.
  • These computer program instructions may be mounted on a processor of a general purpose computer, special purpose computer, or other programmable data processing equipment such that the instructions executed by the processor of the computer or other programmable data processing equipment are executed in each block or flowchart of the figure. It will create means for performing the functions described in the steps.
  • These computer program instructions may be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing equipment to implement functionality in a particular manner, and thus the computer usable or computer readable memory.
  • Instructions stored therein may produce an article of manufacture containing instruction means for performing the functions described in each step of each block or flowchart of the figure.
  • Computer program instructions may also be mounted on a computer or other programmable data processing equipment, such that a series of operating steps may be performed on the computer or other programmable data processing equipment to create a computer-implemented process to create a computer or other programmable data. Instructions for performing the processing equipment may also provide steps for executing the functions described in each block of the figures and in each step of the flowchart.
  • each block or step may represent a portion of a module, segment or code that includes one or more executable instructions for executing a specified logical function (s).
  • a specified logical function s.
  • the functions noted in the blocks or steps may occur out of order.
  • the two blocks or steps shown in succession may in fact be executed substantially concurrently or the blocks or steps may sometimes be performed in the reverse order, depending on the functionality involved.
  • FIG. 1 is a side view showing a state in which a rain sensor is mounted on the windshield of the vehicle according to an embodiment of the present invention
  • Figure 2 is a cross-sectional view showing a detailed structure of the rain sensor shown in Figure 1
  • Figure 3 is 4 is a plan view illustrating a sensing layer
  • FIG. 4 is a plan view of a sensing electrode according to a first exemplary embodiment of the present invention.
  • the rain sensor 20 is mounted on the windshield 10 of the vehicle.
  • the rain sensor 20 is installed to face the windshield 10 of the vehicle, and detects a change in impedance according to the presence or absence of raindrops falling on the windshield 10.
  • the rain sensor 20 forms a sensing region at a predetermined position of the windshield 10 of the vehicle, and thus detects information according to a state of raindrops generated in the sensing region.
  • the rain sensor 20 includes a substrate 21, a sensing electrode 22, a reaction layer 23, a driver 24, and a protective layer 25.
  • the rain sensor 20 as described above provides information for driving the wiper by detecting an impedance change according to the presence of raindrops falling on the windshield 10 in a predetermined region inside the windshield 10 of the vehicle.
  • the substrate 21 is a base substrate on which the sensing electrode 22, the reaction layer 23, and the driver 24 are mounted.
  • the sensing electrode 22 is formed on the substrate 21.
  • the sensing electrode 22 is formed on the upper surface of the substrate 21 while being buried by the reaction layer 23.
  • the sensing electrode 22 is formed in plural and senses an impedance that changes as a reaction of the reaction layer 23 occurs by a material formed on the surface of the reaction layer 23.
  • the sensing electrode 22 may include a first sensing electrode having a positive polarity and a second sensing electrode having a negative polarity.
  • the reaction layer 23 is formed on the substrate 21, and is formed by filling the upper surface of the substrate 21 and the sensing electrode 22.
  • the reaction layer 23 has a predetermined thickness and is formed on the substrate 21 on which the sensing electrode 22 is formed.
  • the reaction layer 23 is formed of a conductive material and has a property of changing impedance according to a change in force or dielectric constant generated by an external material.
  • the reaction layer 23 is a carbon micro coil (CMC) having a spring shape. That is, the reaction layer 23 is formed by depositing at least one of hydrocarbon-based, acetylene, methane, propane and benzene on the substrate 21 by a chemical vapor deposition (CVD) process.
  • CMC carbon micro coil
  • reaction layer 23 may be manufactured using a metal catalyst based on nickel or nickel-iron.
  • the carbon micro coil may have a spiral coil shape that is curled like a pig tail rather than a straight line, and is an amorphous carbon fiber having a unique structure that the fiber material may not have. And, the carbon micro coil has a super elasticity that extends to a length of 10 times or more of the original coil length.
  • Figure 3 (a) shows a carbon micro coil formed in the reaction layer 23, (b) is a detailed view of the carbon micro coil.
  • Morphology of the reaction layer 23 has a 3D-helical / spiral structure, and the crystal structure is amorphous.
  • the reaction layer 23 as described above is formed by growing carbon fibers in a coil shape, and thus the reaction layer 23 has a cross-sectional structure in which carbon fibers are grown in a coil shape.
  • reaction layer 23 may be formed by the force applied as a specific material contacts the surface of the windshield 10 to which the rain sensor 20 is attached, or by the dielectric constant of the specific material. Impedance changes occur.
  • the sensing electrode 22 senses an impedance change of the reaction layer 23, and accordingly transmits a sensing signal according to the impedance change to the driver 24.
  • the driving unit 24 is formed on the lower surface of the substrate 21, and thus detects whether the rainfall and rainfall according to the detection signal transmitted through the sensing electrode 22, and the wiper according to the detected rainfall and rainfall Generates a control signal for controlling the operation of.
  • REAL TERM of impedance is made of resistance
  • POSITIVE IMAGINARY TERM is made of inductance
  • NEGATIVE IMAGINARY TERM is made of capacitance, and the resistance, inductance, and capacitance are summed up.
  • the rain sensor 20 also needs a pair of sensing electrodes 22 to sense the impedance change occurring in the reaction layer 23.
  • the sensing electrode 22 serves to connect the reaction layer 23 and the driver 24 while optimizing the sensing characteristics of the reaction layer 23.
  • the sensed impedance value is the sum of the resistance value, the inductance value, and the capacitance. Accordingly, the impedance value decreases linearly according to the degree of force or permittivity applied to the surface.
  • the inductance value, the capacitance value and the impedance value change according to the amount of the ratio, and the amount of the ratio is measured by measuring at least one of the changing inductance value, capacitance value and impedance value. Can be detected.
  • the sensing electrode 22 has a structure as shown in FIG. 4 and is disposed on the substrate 21.
  • the sensing electrode 22 is provided in plurality, and preferably includes a first sensing electrode having a positive (+) characteristic and a second sensing electrode having a negative ( ⁇ ) characteristic.
  • the first sensing electrode and the second sensing electrode are disposed on the substrate 21 at a predetermined interval.
  • the first sensing electrode and the second sensing electrode have the same shape and have a rectangular shape extending in the vertical direction. Accordingly, the spacing between the first sensing electrode and the second sensing electrode in the related art is the same in all regions.
  • the distance between the first sensing electrode and the second sensing electrode is closely related to the sensing characteristic of precipitation.
  • an impedance change occurs as raindrops form between the first sensing electrode and the second sensing electrode.
  • the intervals are the same in all regions, there is a situation in which raindrops having a first threshold value or less are not detected.
  • a normal impedance change does not occur in the sensor. Accordingly, when a very small amount of raindrops below the first threshold value contacts the sensor, a situation in which the small amount of raindrops is not normally detected may occur.
  • the first sensing electrode 22 and the second sensing electrode 22 may have the same shape.
  • the first sensing electrode 22 and the second sensing electrode 22 may have symmetrical shapes.
  • the surfaces of the first sensing electrode 22 and the second sensing electrode 22 that face each other have an inclination angle of a predetermined slope with respect to the upper surface. Therefore, the width of each of the first sensing electrode 22 and the second sensing electrode 22 gradually decreases toward the lower direction.
  • the gap between the first sensing electrode 22 and the second sensing electrode 22 is formed to be the narrowest at the uppermost side and the widest at the lowermost side.
  • the distance between the first sensing electrode 22 and the second sensing electrode 22 increases gradually toward the lower side.
  • the gap between the first sensing electrode 22 and the second sensing electrode 22 may be gradually decreased downward.
  • FIG. 5 is a cross-sectional view taken along direction A of FIG. 4
  • FIG. 6 is a cross-sectional view taken along direction B of FIG. 4
  • FIG. 7 is a cross-sectional view taken along direction C of FIG. 4.
  • upper regions of the first sensing electrode 22 and the second sensing electrode 22 may be spaced apart from each other by a first interval W1. Accordingly, according to the present invention, it is possible to accurately detect precipitation of the very small amount of droplets R by the first interval W1 of the upper region.
  • central regions of the first sensing electrode 22 and the second sensing electrode 22 may be spaced apart from each other by a second interval W2.
  • the second interval W2 is preferably larger than the first interval W1. Accordingly, according to the present invention, it is possible to accurately detect precipitation with respect to the appropriate amount of droplets R by the second interval W2 of the central region.
  • lower regions of the first sensing electrode 22 and the second sensing electrode 22 may be spaced apart from each other by a third interval W3.
  • the third interval W3 is preferably larger than the first and second intervals W1 and W2. Accordingly, according to the present invention, it is possible to accurately detect precipitation of a large amount of droplets R by the third interval W3 of the lower region.
  • each of the first sensing electrode 22 and the second sensing electrode 22 changes from the upper side to the lower side, it is noted that any one of the first sensing electrode 22 and the second sensing electrode 22 is changed. Only one width change occurs and the other may have the same width in all regions without the width change.
  • the first sensing electrode 22 may have a trapezoidal shape in which the width gradually increases from the upper side to the lower side, and the second sensing electrode 22 may have a rectangular shape in which the width does not change in all regions. Can be.
  • the first sensing electrode 22 since the first sensing electrode 22 has a trapezoidal shape, the interval between the first sensing electrode 22 and the second sensing electrode 22 gradually increases in a downward direction.
  • the first sensing electrode 22 and the second sensing electrode 22 are connected to the driver 24.
  • the driver 24 is provided with an analog front end (AFE), to which the sensing electrode 22 (preferably, the first sensing electrode and the second sensing electrode) is connected.
  • AFE analog front end
  • the AFE performs a differential amplification function, and there is a difference in the state of impedance change according to the occurrence of the rainfall depending on whether the differential amplification is positive or negative.
  • the driver 24 detects a change state of the impedance value based on a reference value according to the differential amplification state, and drives the wiper to remove raindrops when the change state is out of a threshold value. do.
  • the raindrops when the raindrops fall, the raindrops have a constant force or change in permittivity of the windshield 10.
  • an impedance change occurs in the reaction layer 23 according to the applied force or the change in permittivity.
  • the change amount of the impedance may correspond to the rainfall and rainfall. That is, the force or dielectric constant applied to the reaction layer 23 also increases in proportion to the rainfall, and the impedance change amount decreases in inverse proportion to the increase in the dielectric constant or the force.
  • the differential signal according to the differential amplification of the AFE of the driver 24 is output according to the amplitude change of the internal clock.
  • the output differential signal is converted into a digital signal and transmitted to the main control unit (described later) of the vehicle.
  • the main controller may determine whether the rainfall and rainfall based on the impedance change amount according to the transmitted digital signal, and if the rainfall occurs and the rainfall exceeds the threshold, the wiper for removing raindrops Start the operation.
  • the carbon micro coils have different properties from carbon nano tubes. That is, the carbon nanotubes have a structure in which hexagonal carbons in the form of nanotubes are connected.
  • the carbon micro coil in the present invention has a form in which carbon is grown into coils of micro units using a catalyst rather than structural forms of carbon.
  • the carbon nanotubes as described above obtain the measured value by changing the impedance from the conductor to the non-conductor by using the characteristics of the conductor and the non-conductor according to the form of the bonding of the elements themselves.
  • the carbon micro-coil according to the embodiment of the present invention in the form of a coil made of carbon of the micro unit, the characteristics of L that vary as the coil is stretched and contracted by the force or dielectric constant change between each carbon micro coil The impedance varies depending on the interaction between the carbon micro coils due to the characteristics of C and the like due to distance.
  • the carbon fine coil itself has a property of a conductor, but the curing agent, epoxy resin, and the like have properties of a non-conductor. Due to the above characteristics, the carbon micro coils have internal capacitance values. In addition, when the distance between the carbon micro coils is changed by a force or a dielectric constant change by the sensing object, the characteristic of the capacitance value of the carbon micro coils is changed.
  • the carbon micro coil has the characteristics of L-C-R, and thus has a frequency absorption characteristic, a heat generation characteristic, a proximity sensing characteristic, and a temperature characteristic when satisfying a predetermined condition.
  • FIG. 8 is a view for explaining the manufacturing method of the rain sensor 20 shown in FIG.
  • a liquid 81 for forming the reaction layer 23 in the plating bath 80 is prepared.
  • the liquid 81 may be made of carbon micro coils.
  • the liquid 81 may include only carbon micro coils, and alternatively, a resin and a dispersant may be further added.
  • the carbon micro coil material and the resin are added and mixed in the plating bath 80, and the dispersant is further added and dispersed accordingly.
  • the dispersant is for evenly dispersing the liquid on the substrate 21 later.
  • the substrate 21 is prepared, and the sensing electrode 22 is formed on the prepared substrate 21.
  • the sensing electrode 22 is formed in plural and has a planar structure as shown in FIG. 4.
  • a frame 82 is formed in the edge region of the substrate 21.
  • the frame 82 is formed on the substrate 21 while covering the edge region of the substrate 21, exposing the central region of the substrate 21.
  • the prepared liquid 81 is introduced into the mold 82 of the substrate 21.
  • reaction layer 23 is formed on the basis of the injected liquid 81 through the elapsed process.
  • the curing process may be performed for 30 minutes at a temperature of 120 °C.
  • the glass composition which comprises the said reaction layer 23 is demonstrated concretely.
  • the liquid 81 may be prepared by first proceeding with a blending process of raw materials constituting the glass composition.
  • the blending process of the raw materials may largely include a raw material weighing process and a mixing process.
  • the raw materials constituting the glass composition are weighed according to an appropriate mixing ratio.
  • the raw material which comprises the said glass composition contains glass frit and carbon fine coil powder.
  • the glass frit is combined with the carbon fine coil powder during the firing process of the glass composition to protect the carbon fine coil grown by the carbon fine coil powder from the external environment within a range below the reaction temperature of the carbon fine coil powder. do.
  • the glass frit may include various metal oxides depending on the use.
  • the glass frit may include silicon oxide which is a main component of glass, and alternatively, the glass frit may be a mixture of at least one of sodium carbonate, alumina, and borosilicate.
  • the glass composition may include a metal oxide selected from the group consisting of lead oxide, tellurium oxide, bismuth oxide, zinc oxide, tungsten oxide, silicon oxide, and mixtures thereof.
  • the glass frit may include lead oxide, silicon oxide, tellurium oxide, zinc oxide (PbO-SiO 2 -TeO 2 -ZnO), silicon oxide, tellurium oxide, bismuth oxide, zinc oxide, tungsten oxide, etc.
  • TeO2-Bi2O3-ZnO-WO3 lead oxide-silicon oxide-tellurium oxide-bismuth oxide-zinc oxide-tungsten oxide type (PbO-SiO2-TeO2-Bi2O3-ZnO-WO3), lead oxide-tellurium oxide-oxidation Bismuth-based (PbO-TeO2-Bi2O3), or silicon oxide-tellurium oxide-bismuth oxide-zinc oxide-tungsten oxide (SiO2-TeO2-Bi2O3-ZnO-WO3).
  • the glass frit can be prepared from the metal oxides described above using conventional methods.
  • the metal oxides described above can be prepared by mixing to a specific composition.
  • the mixing may be performed using a ball mill or a planetary mill.
  • the mixed composition may be melted under conditions of 900 ° C.-1300 ° C. and quenched at 25 ° C.
  • the resultant obtained by the quenching may be pulverized by a disk mill, a planetary mill or the like to prepare a glass composition according to an embodiment of the present invention.
  • the glass frit may be included within 90 to 99% by weight.
  • the carbon fine coil powder which comprises the said glass composition is prepared.
  • the carbon fine coil powder includes a carbon fine coil.
  • the carbon fine coil powder may be included in 1 to 10% by weight.
  • a raw material constituting the glass composition may further include a binder.
  • the binder may be included in the raw material constituting the glass composition having a content of 1 wt% or less.
  • the binder may be included in the raw material to increase the mixing uniformity between the glass frit and the carbon fine coil powder.
  • the binder (binder) may be selectively removed according to the mixed state between the glass frit and the carbon fine coil powder, or the content may be adjusted.
  • Material measurement according to the mixing ratio of the carbon fine coil powder and the glass frit as described above may be carried out through an electronic balance, Electron Probe Micro-Analysis (EPMA), Scanning Electron Microscope (SEM), and an electron microscope.
  • EPMA Electron Probe Micro-Analysis
  • SEM Scanning Electron Microscope
  • the mixing process may be performed through a V-Mixer, a Ball-Mill and an ultra-vibration stirrer.
  • the evaluation process for the mixing process may proceed.
  • the evaluation process may evaluate the mixed state through an Electron Probe Micro-Analysis (EPMA), Scanning Electron Microscope (SEM), an electron microscope, and a particle size analyzer.
  • the plate forming step may include a step of pressing the blended raw material.
  • the pressing process may be performed by a press or hot press apparatus.
  • the process conditions of the pressing step include a pressure condition between 3 to 5 tons, a time condition between 5 minutes and 10 minutes, and a temperature condition at an ordinary temperature.
  • the pressing process is evaluated. Evaluation of the pressing process may be performed through the sintered density appearing as the raw material is press-molded into a predetermined shape by the plate forming process.
  • the processing step may include a sintering step of sintering the raw material in which the plate forming step is advanced.
  • the sintering process may be carried out in a sintering furnace, the sintering conditions including a temperature rising condition of 10 °C / min, sintering temperature conditions between 450 °C ⁇ 700 °C, holding time conditions of 1 hour, and air atmosphere conditions have.
  • an evaluation process may be performed in the sintering process, and the evaluation process may be performed with a sintered density of the sintered material in the composition in which the sintering process is performed.
  • the raw material which comprises the said glass frit, and the raw material which comprises the said carbon fine coil powder only have the state mixed.
  • bonding is performed at the bonding surface between the glass frit and the carbon fine coil powder, or a portion is deposited and connected to each other.
  • the composition of is prepared.
  • a reliability evaluation process of evaluating the glass composition prepared above may be performed.
  • the glass composition may be polished prior to the reliability evaluation process, and the polishing process may be selectively skipped.
  • the reliability evaluation process may be performed through an electrical evaluation process.
  • the process of measuring the output value of each prepared glass composition may proceed.
  • the prepared glass composition may include the carbon fine coil powder in different contents.
  • a typical capacitive sensor (0 wt%) that does not contain the carbon fine coil powder, a glass composition (3) containing the carbon fine coil powder (1) in 1 wt%, the carbon in 5 wt% Electrical evaluation of the glass composition (3) containing the fine coil powder and the glass composition containing the carbon fine coil powder may be performed at 10 wt%, respectively.
  • the electrical evaluation may be performed with an L-C-R meter capable of measuring an output value or an L value / C value / R value of a digital converter that converts the capacitance value of the glass composition into a digital value and outputs the digital value.
  • the electrical evaluation sets the capacitance value when no specific sensing object is present in the module region including the glass composition as a reference value, and accordingly the capacitance value when the specific sensing object enters the module region. You can proceed with the change of.
  • the glass composition includes a carbon micro coil grown by the carbon micro coil powder.
  • the magnetic field is generated around the glass composition when the sensing object approaches a certain radius of the glass composition or the sensing object contacts the surface of the glass composition by the carbon micro coil.
  • the arrangement state of the carbon micro coils included in the glass composition is changed by the generated magnetic field, and thus a change in capacitance value of the glass composition occurs.
  • a sensing electrode is disposed on a surface of the glass composition.
  • a change value of at least one of capacitance, inductance, and impedance of the glass composition is obtained using the sensing electrode, and accordingly, The state can be detected.
  • the state of the sensing object may include a distance from the sensing object, a concentration of the sensing object, a temperature of the sensing object, and a humidity according to the sensing object.
  • the sensing object is water (eg, rainwater)
  • the state of the sensing object may include the amount of water.
  • the carbon fine coil included in the glass composition performs a function of a capacitor in series / parallel inside the electrode.
  • the carbon fine coil may serve as a series capacitor in which a plurality of capacitors are connected in series with each other.
  • the carbon micro coil may serve as a parallel capacitor in which a plurality of capacitors are connected in parallel to each other.
  • the sensing electrode 22 is embedded in the reaction layer 23 made of carbon micro coils.
  • the sensing electrode 22 is connected to the driver 24 mounted below the substrate 21.
  • the reaction layer 23 may determine whether or not rainfall and rainfall according to the impedance change amount by itself, the measurement sensitivity is also changed depending on the shape of the sensing electrode (22). Accordingly, in the embodiment, the sensing electrode 22 having the planar shape as described above is formed.
  • optimization of various factors such as the composition by adjusting the content ratio of the carbon micro coils, the optimized electrode shape, and the mounting position of the driving unit 24 is important.
  • the impedance includes a real part and an imaginary part
  • the imaginary part comprises a positive imaginary part and a negative imaginary part
  • the carbon micro coil is included.
  • the rain sensor 20 measures by using two characteristic changes of the positive imaginary part (inductive) and the negative imaginary part (capacitive).
  • the force applied to the windshield 10 of the vehicle varies according to the amount of rain, and the amount of water (raindrops) present in the windshield 10 also varies.
  • the carbon micro coil (CMC: Carbon Micro Coil) is composed of a very small coil group as its name, it is also a dielectric having a dielectric constant.
  • the force is measured through the change of the inductive component, that is, the characteristic change of the carbon fine coil, and the amount of water present on the windshield 10 is measured by the capacitive change caused by the change in dielectric constant.
  • each layer constituting the rain sensor 20 serves as a dielectric having a specific dielectric constant. If it rains as described above, a new dielectric, water, is present at the electrode, resulting in a capacitive change. ..
  • the real part can be adjusted according to the area of the reaction layer 23, and when it rains, the impedance value changes due to the inductive and capacitive value changes as described above.
  • the rain value and the rainfall are determined by detecting the change in the impedance value according to the inductive and capacitive value changes of the rain sensor 20 as described above.
  • the rain sensor 20 as described above forms an adhesive member (not shown) such as silicon inside the windshield 10 and is mounted on a specific inner region of the windshield 10 by the adhesive member. do.
  • the rain sensor 20 detects a change in impedance in consideration of the dielectric constant of the adhesive member.
  • FIG. 9 is a plan view of a sensing electrode according to a second exemplary embodiment of the present invention.
  • the sensing electrodes 22A according to the second embodiment may have curved surfaces that face each other, not planes.
  • the width of the first sensing electrode gradually decreases from the top to the bottom, and then gradually increases in width from the first point, and also gradually decreases in width again from the second point, and again from the third point. This gradually increases.
  • the width of the second electrode gradually increases from the top to the bottom, gradually decreases the width again from the first point, and also gradually increases the width from the second point, and gradually increases the width again from the third point. Will decrease.
  • the sensing electrode according to the second embodiment of the present invention is formed to have a curved surface, thereby maximizing the sensing area in the same sensor area, thereby improving the sensor sensing capability.
  • FIG. 10 is a plan view of a sensing electrode according to a third exemplary embodiment of the present invention.
  • the sensing electrode 22B may include a plurality of branch electrodes.
  • the first sensing electrode may include a first body 221 extending in a first direction (preferably in the Y-axis direction) and a plurality of branch electrodes protruding from the first body 221 in the direction of the second sensing electrode. (222, 223, 224).
  • the second sensing electrode includes a second body 225 extending in the first direction, and a plurality of branch electrodes 226 and 227 protruding from the second body 225 in the direction of the first sensing electrode. do.
  • the plurality of branch electrodes constituting the first sensing electrode include a first branch electrode 222, a second branch electrode 223, and a third branch electrode 224 spaced apart from each other by a predetermined interval.
  • the branch electrodes constituting the second sensing electrode include a fourth branch electrode 226 and a fifth branch electrode 227.
  • the fourth branch electrode 226 is disposed between the first branch electrode 222 and the second branch electrode 223, and the fifth branch electrode 227 is the second branch electrode 223 and the second branch electrode 223. It is disposed between the third branch electrode 224.
  • each of the branch electrodes is spaced apart from each other by a predetermined interval, the separation interval may change gradually.
  • first branch electrode 222 and the fourth branch electrode 226 may be spaced apart by a first interval W1, and the fourth branch electrode 226 and the second branch electrode 223 may be separated from each other. It may be spaced apart by a second interval W2 greater than the first interval W1.
  • second branch electrode 223 and the fifth branch electrode 227 may be spaced apart by a third interval W3 greater than the first interval W1 and the second interval W2.
  • the fifth branch electrode 227 and the third branch electrode 224 may be spaced apart by a fourth interval W4 greater than the first interval W1, the second interval W2, and the third interval W3. Can be.
  • the minimum size and the maximum size of the raindrop detection region may be adjusted through the distance between the plurality of branch electrodes, thereby improving the detection capability.
  • FIG. 11 is a view illustrating a wiper driving apparatus according to an embodiment.
  • the sensor unit 20 includes a rainfall detector 25, a memory 30, a wiper 40, a motor 50, a wiper driver 60, and a controller 70.
  • the sensor unit 20 refers to the rain sensor and detects a change in impedance generated according to the rainfall.
  • the sensor unit 20 has a structure as shown in FIG. 2.
  • the sensor unit 20 may have a circuit structure in which a carbon micro coil and a capacitor are connected in parallel.
  • the rainfall detecting unit 25 is connected to the sensor unit 20 and generates an oscillation frequency according to the change in the impedance of the sensor unit 20 generated according to rainfall or rainfall, and the difference between the oscillation frequency and the reference frequency. Determine rainfall and rainfall based on
  • the rainfall detecting unit 25 detects whether the difference frequency between the oscillation frequency and the reference frequency belongs in the preset filtering region, and only if the difference frequency exists within the predetermined filtering region. Output the corresponding digital value.
  • the memory 30 stores information for controlling various components of the vehicle.
  • the memory 30 stores the driving condition information of the wiper for driving the wiper in response to the digital value according to the difference frequency output through the rainfall detector 25.
  • the driving condition information may include whether the wiper is driven and driving speed information of the wiper.
  • the driving condition information may be classified according to the type of filter included in the rainfall detection unit 25.
  • the rainfall detector 25 may include any one of a low pass filter (LPF) and a band pass filter (BPF) according to the characteristics of the sensor unit 20.
  • LPF low pass filter
  • BPF band pass filter
  • the low pass filter and the band pass filter have different filtering frequency ranges.
  • the driving condition information of the wiper corresponding to the output value according to the type of filter included in the rainfall detection unit 25 is stored in the memory 30.
  • the wiper 40 is mounted on the outside of the windshield 10 of the vehicle and removes water such as raindrops present on the windshield 10.
  • the motor 50 drives the wiper 40 according to a preset condition.
  • the wiper driver 60 provides the motor 50 with condition information for driving the wiper 40.
  • the condition information may be information of driving power to be supplied to the wiper 40 through the motor 50.
  • the controller 70 receives an output value output through the rainfall detector 25 and sets a driving condition for driving the wiper 40 based on the received output value.
  • FIG. 12 illustrates the characteristics of a carbon micro coil according to an embodiment of the present invention.
  • the carbon micro coil has a first inductance value, and the inductance value decreases as a force or dielectric constant is applied to the carbon micro coil.
  • the inductance value has a different amount of reduction depending on the type of material placed on the carbon micro coil.
  • the inductance value has a relatively small decrease when rainwater comes into contact with the carbon microcoil, and has a higher decrease than when the rainwater comes in contact with a part of a human body such as a person, and the metal If the material is in contact with the rain water or the human body will have a higher amount of reduction than.
  • FIG. 13 is a diagram illustrating a configuration of the rainfall detector 25 shown in FIG. 11.
  • the rainfall detector 25 includes a first frequency generator 251, a second frequency generator 252, a difference frequency generator 253, a filter 245, and an analog-to-digital converter 255. .
  • the first frequency generator 251 is connected to the sensor unit 20 and generates a first frequency according to the impedance change of the sensor unit 20.
  • the first frequency generator 251 may be configured as an LC oscillation circuit.
  • the first frequency generator 251 is configured to generate an oscillation frequency that is changed by a change in inductance value of the carbon micro coil by using a carbon micro coil and a capacitor constituting the sensor unit 20. do.
  • the first frequency generator 251 oscillates the oscillation frequency by the sensor unit 20 using a carbon micro coil attached to the wind shield.
  • the inductance value of the carbon micro coil constituting the sensor unit 20 and the capacitance value of the capacitor determine the oscillation frequency of the first frequency generator 251.
  • the second frequency generator 252 may be a reference oscillator, and generates a second frequency corresponding to the reference oscillation frequency.
  • the filter 245 is configured as a low pass filter.
  • the filter 245 is configured as a low pass filter.
  • the first frequency generated by the first frequency generator 251 and the second frequency generated by the second frequency generator 252 have the same value. It can be set to.
  • the difference between the first frequency and the second frequency increases according to the rainfall, and the rainfall may be determined based on the increased difference value.
  • Equation 1 the first frequency ⁇ 0 generated by the first frequency generator 251 is expressed by Equation 1 as follows. same.
  • the first voltage value V0 corresponding to the first frequency generated by the first frequency generator 251 is expressed by Equation 2 below.
  • Equation 3 the second voltage value Vr corresponding to the second frequency generated by the second frequency generator 252 is expressed by Equation 3 below.
  • the difference frequency generator 253 is connected to the first frequency generator 251 and the second frequency generator 252, and includes a first frequency generated by the first frequency generator 251 and the second frequency generator 252. Outputs a difference value corresponding to the difference in the second frequency generated by
  • Equation 4 the difference value Vdmod generated by the difference frequency generator 253 is expressed by Equation 4 below.
  • the reason why the difference value has the same value as in Equation 4 is that the first frequency generated by the first frequency generator 251 when the rainfall does not occur in the sensor unit 20 and the This is because the second frequencies generated by the second frequency generator 252 have the same value.
  • the filter 245 filters the output value generated by the difference frequency generator 253 and outputs the filtered output value.
  • the filter 245 has a filtering region corresponding to a frequency range of a predetermined size, and filters the output value of the difference frequency generator 253 within the filtering region.
  • the filtering area may be determined by the type of the filter 245 and the change characteristic of the carbon micro coils when the rainfall occurs in the sensor unit 20.
  • the type of the filter 245 may be determined by the structure of the carbon micro coil.
  • the filter 245 may be configured as a low pass filter.
  • the filter 245 may be configured as a band pass filter.
  • the type of the filter 245 may be determined by a structure such as the area of the carbon micro coil constituting the sensor unit 20.
  • the analog-to-digital converter 255 converts the output value output through the filter 245 into a digital value and outputs it.
  • the first frequency generated by the first frequency generator 251 and the second frequency generator may have the same frequency.
  • the output value filtered by the filter 245 is almost the DC voltage level.
  • the difference frequency between the first frequency and the second frequency is increased according to the intensity (rainfall amount) of the generated rainfall.
  • the rainfall may be determined according to the value of the difference frequency between the first frequency and the second frequency.
  • whether or not rainfall is determined according to the frequency domain change amount according to the signal output from the filter 245.
  • the difference between the first frequency and the second frequency may be caused by rain or moisture due to rainfall, and may also be caused by other foreign matters.
  • the foreign material may include a human body, paper, stone, and metal material.
  • the carbon micro coil has a different degree of change in inductance value due to rainfall and a change degree of inductance value due to foreign matter such as the human body, paper, stone, and metal material.
  • the inductance value of the carbon micro coil is different from the threshold of the change caused by the rainfall and the threshold of the change caused by the foreign matter such as the human body, paper, stone, and metal material.
  • the filtering region of the filter 245 is determined according to the change characteristic of the carbon micro coils generated by the respective materials, and the difference between the first frequency and the second frequency within the determined filtering region.
  • the wiper can optionally be driven only if
  • the difference frequency when the difference between the first frequency and the second frequency is caused by a foreign matter rather than the rainfall, the difference frequency may have a frequency outside the filtering region of the filter 245.
  • 17 is a diagram illustrating a change of a difference frequency value according to the second embodiment of the present invention.
  • the design of the sensor unit 20 differs from the second frequency when the first frequency when the rainfall does not occur, and the increase or decrease of the first frequency when the rainfall occurs.
  • the filter 245 may be configured as a band pass filter.
  • the filtering region of the filter 245 may have a different frequency range than that of the low pass filter.
  • rainfall and rainfall may be determined according to the degree of movement of the difference frequency generated by the change of the difference frequency in the filtering region.
  • the filter 245 is a band pass filter
  • the output value of the difference frequency generator 253 is expressed by Equation 5 below.
  • FIG. 18 is a flowchart illustrating a step-by-step method of driving a wiper drive according to an embodiment of the present invention.
  • the first frequency generator 251 generates a first frequency according to the inductance value of the carbon micro coil constituting the sensor unit 20 (step 10).
  • the second frequency generator 252 generates a second frequency corresponding to the preset reference oscillation frequency.
  • the difference frequency generator 253 receives the first frequency generated by the first frequency generator 251 and the second frequency generated by the second frequency generator 252 and accordingly the first frequency and the second frequency.
  • the difference frequency of two frequencies is output (step 12).
  • the filter 245 filters the output difference frequency to determine whether the difference frequency exists in a predetermined filtering region (step 13).
  • the analog-to-digital converter 255 If the difference frequency is present in the predetermined filtering region, the analog-to-digital converter 255 generates and outputs an output value corresponding to the difference frequency. Then, the control unit receives the output value, and detects whether the rainfall and the rainfall according to the received output value (step 14).
  • the controller determines a driving condition of the wiper based on the detected rainfall, and controls the wiper to be driven according to the determined driving condition (step 15).
  • the filter 245 does not output an output value corresponding to the received difference frequency, thereby ignoring the received difference frequency (16). step).
  • the difference frequency does not exist in the filtering region, and thus the rain sensor does not react.
  • the embodiment by determining the rainfall and rainfall using a carbon micro coil, it is possible to provide a rain sensor of the characteristics (response characteristics, precision, accuracy, power consumption, miniaturization, etc.) differentiated from the conventional optical method. Can be.
  • the embodiment it is possible to measure the rainfall and rainfall even by the minute change in the inductance of the carbon micro coil, it is possible to detect a low level of rainfall, by setting the reaction zone to avoid the foreign matter by the foreign matter The situation in which the wiper is driven can be prevented in advance.
  • the embodiment by determining the rainfall and rainfall using a carbon micro coil, it is possible to provide a rain sensor of the characteristics (response characteristics, precision, accuracy, power consumption, miniaturization, etc.) differentiated from the conventional optical method. Can be.
  • surfaces facing each other may be formed in a curved surface, so that the sensing region can be maximized in the same sensor area.

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Abstract

Selon un mode de réalisation de l'invention, un capteur de pluie comprend : un substrat ; une première électrode de détection agencée sur le substrat ; et une seconde électrode de détection agencée sur le substrat et espacée de la première électrode de détection selon des intervalles prédéterminés, l'intervalle entre la première électrode de détection et la seconde électrode de détection variant progressivement dans une direction du substrat. Le mode de réalisation est susceptible de détecter avec précision une grande quantité de précipitations ainsi qu'une petite quantité de précipitations, par le biais de modifications de la largeur des électrodes de détection, et la fiabilité de fonctionnement peut ainsi être améliorée.
PCT/KR2017/007890 2016-07-22 2017-07-21 Capteur de pluie WO2018016916A1 (fr)

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US11891022B2 (en) * 2020-10-12 2024-02-06 Au Optronics Corporation Raindrop sensor device and driving method thereof
CN113324467B (zh) * 2021-05-27 2023-03-31 贵州电网有限责任公司 基于冰介质电容效应的导线等值覆冰厚度监测装置及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060115534A (ko) * 2005-05-06 2006-11-09 주식회사 아이엔씨 화학기상증착법을 이용한 카본 마이크로 코일 제조방법 및그 방법으로 제조된 카본 마이크로 코일
KR20070061560A (ko) * 2004-10-11 2007-06-13 피피지 인더스트리즈 오하이오 인코포레이티드 수분 검출기, 수분 검출 시스템 및 수분 검출 방법
JP2011232050A (ja) * 2010-04-23 2011-11-17 Asmo Co Ltd 水滴検出装置
KR20110138101A (ko) * 2010-06-18 2011-12-26 동양기전 주식회사 2개의 발진 주파수의 차이를 이용한 레인 센서 및 우적 감지 방법
KR20130070913A (ko) * 2011-12-20 2013-06-28 한국오므론전장주식회사 차량용 레인센서
KR20160109621A (ko) * 2015-03-12 2016-09-21 엘지이노텍 주식회사 레인 센서 및 이를 포함하는 와이퍼 구동 장치

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005029134A1 (fr) * 2003-09-19 2005-03-31 Tengchen Sun Dispositif et procede de detection du changement environnemental affectant un pare-brise
KR20150014063A (ko) * 2013-07-29 2015-02-06 주식회사 에스앤에스레볼루션 수분센서

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070061560A (ko) * 2004-10-11 2007-06-13 피피지 인더스트리즈 오하이오 인코포레이티드 수분 검출기, 수분 검출 시스템 및 수분 검출 방법
KR20060115534A (ko) * 2005-05-06 2006-11-09 주식회사 아이엔씨 화학기상증착법을 이용한 카본 마이크로 코일 제조방법 및그 방법으로 제조된 카본 마이크로 코일
JP2011232050A (ja) * 2010-04-23 2011-11-17 Asmo Co Ltd 水滴検出装置
KR20110138101A (ko) * 2010-06-18 2011-12-26 동양기전 주식회사 2개의 발진 주파수의 차이를 이용한 레인 센서 및 우적 감지 방법
KR20130070913A (ko) * 2011-12-20 2013-06-28 한국오므론전장주식회사 차량용 레인센서
KR20160109621A (ko) * 2015-03-12 2016-09-21 엘지이노텍 주식회사 레인 센서 및 이를 포함하는 와이퍼 구동 장치

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