CN111812919A - External raindrop detection automatic heating raindrop removing and steam removing camera module - Google Patents

External raindrop detection automatic heating raindrop removing and steam removing camera module Download PDF

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Publication number
CN111812919A
CN111812919A CN202010508314.8A CN202010508314A CN111812919A CN 111812919 A CN111812919 A CN 111812919A CN 202010508314 A CN202010508314 A CN 202010508314A CN 111812919 A CN111812919 A CN 111812919A
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China
Prior art keywords
raindrop
lens
camera module
heating
raindrop detection
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Granted
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CN202010508314.8A
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Chinese (zh)
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CN111812919B (en
Inventor
刘振庭
尹小玲
赖宗桥
刘易
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Guangdong Hongjing Optoelectronics Technology Co Ltd
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Guangdong Hongjing Optoelectronics Technology Co Ltd
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/55—Details of cameras or camera bodies; Accessories therefor with provision for heating or cooling, e.g. in aircraft
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/56—Accessories
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B29/00—Combinations of cameras, projectors or photographic printing apparatus with non-photographic non-optical apparatus, e.g. clocks or weapons; Cameras having the shape of other objects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/52—Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

This application is a divisional application with application number 202010361907.6. The embodiment of the invention discloses an external raindrop detection automatic heating raindrop removal and steam removal camera module which at least comprises a lens cone, a first lens arranged at the front end of the lens cone, a gland matched with the front end of the lens cone to lock the first lens on the lens cone, and a heating sheet capable of heating the first lens, wherein an outer surface of the object plane side of the first lens is provided with a raindrop detection element. According to the external raindrop detection automatic heating raindrop and water vapor removal camera module, the raindrop detection element is arranged on the first lens, so that raindrop or water vapor automatic detection is realized in rainy and foggy days such as cold, humid or rainy days, and accurate detection control signals are provided for the control of subsequently automatically removing raindrops and water vapor.

Description

External raindrop detection automatic heating raindrop removing and steam removing camera module
The application is a divisional application, the original application is the application number of 202010361907.6, the application date is 2020, 04, 30 days, and the invention name is 'raindrop detection automatic heating raindrop removing and steam removing camera module'.
The technical field is as follows:
the invention relates to a camera module, in particular to an external raindrop detection automatic heating raindrop removing and steam removing camera module.
Background art:
present outdoor control is with module of making a video recording, or external on-vehicle module of making a video recording, generally can't realize raindrop or steam automated inspection under rain fog weather such as cold, humidity, or rain to reach the effect that removes the raindrop and remove steam automatically.
The invention content is as follows:
in order to overcome the problem that the existing camera module generally cannot realize automatic raindrop or steam detection, the embodiment of the invention provides an external raindrop detection automatic heating raindrop and steam removal camera module.
The utility model provides an external raindrop detects self-heating and removes raindrop and moisture camera module, includes the lens cone at least, locates the first lens of lens cone front end, cooperates with the lens cone front end in order to lock the gland on the lens cone with first lens and can carry out the piece that generates heat that heats to first lens, and this first lens object plane side outer surface is equipped with raindrop detecting element.
According to the external raindrop detection automatic heating raindrop and water vapor removal camera module, the raindrop detection element is arranged on the first lens, so that raindrop or water vapor automatic detection is realized in rainy and foggy days such as cold, humid or rainy days, and accurate detection control signals are provided for the control of subsequently automatically removing raindrops and water vapor.
Description of the drawings:
in order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced 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 based on these drawings without creative efforts.
FIG. 1 is a first schematic structural diagram of a raindrop detection element according to an embodiment of the present invention;
FIG. 2 is a second schematic structural view of an embodiment of a raindrop detection element according to the present invention;
FIG. 3 is a front view of an embodiment of a raindrop detection element of the present invention;
fig. 4 is a sectional view of an embodiment of a raindrop detection element of the present invention;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is a sectional view of another embodiment of the raindrop detection element of the present invention
FIG. 7 is an enlarged view of portion B of FIG. 6;
FIG. 8 is a first perspective view of a raindrop detection and moisture removal lens embodiment of the present invention;
FIG. 9 is a second perspective view of an embodiment of a raindrop detection and moisture removal lens of the present invention;
FIG. 10 is a cross-sectional view of FIG. 9;
FIG. 11 is the first exploded view of FIG. 9;
FIG. 12 is a second exploded view of FIG. 9;
FIG. 13 is a perspective view of another embodiment of a raindrop detection and moisture removal lens of the present invention;
FIG. 14 is a cross-sectional view of FIG. 13;
FIG. 15 is a schematic structural diagram of a camera module according to an embodiment of the present invention;
FIG. 16 is an exploded view of FIG. 15;
FIG. 17 is a schematic structural diagram of a camera module according to another embodiment of the present invention;
FIG. 18 is an exploded view of FIG. 17;
FIG. 19 is a schematic structural diagram of a camera module according to another embodiment of the present invention;
FIG. 20 is a schematic block diagram of the control circuit of the present invention;
FIG. 21 is a schematic diagram of the detection circuit of the present invention;
fig. 22 is a schematic diagram of a driving circuit of the present invention.
The specific implementation mode is as follows:
in order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
When embodiments of the present invention refer to the ordinal numbers "first", "second", etc., it should be understood that the words are used for distinguishing between them unless the context clearly dictates otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 3, an embodiment of the present invention discloses a raindrop detection element 1, which includes an element body, electrode pairs (11, 12) arranged at intervals are printed on the element body, and when the element body is combined with an image capture module, a sensing signal indicating whether raindrops or water vapor are present on the image capture module is obtained through the electrode pairs (11, 12) arranged at intervals.
According to the raindrop detection element or the camera module provided by the embodiment of the invention, when water drops or water vapor is condensed on the electrode pairs arranged at intervals, the electric signals between the electrode pairs arranged at intervals can be changed, so that a sensing signal whether raindrops or water vapor exist is formed, automatic detection of the raindrops or the water vapor is realized in rainy and foggy days such as cold weather, damp weather or rain weather, and an accurate detection control signal is provided for the control of automatically removing the raindrops and the water vapor of the subsequent camera module.
Further, as a preferred embodiment of the present invention, but not limited thereto, when raindrops or water vapor exists, the electrode pairs (11, 12) spaced apart from each other on the element body output low-level sensing signals; when no raindrop or water vapor exists, high-level sensing signals are output between the electrode pairs (11, 12) arranged on the element body at intervals. Simple structure detects accurately.
Still further, as a preferred embodiment of the present invention, but not limited thereto, the electrode pair includes two wires arranged in parallel. The two wires can be two capacitance plates with potential difference or ITO conductive strips.
Still further, as a preferred embodiment of the present solution, but not limited thereto, the element body is annular. Simple structure can conveniently cooperate with the camera module.
Further, as a preferable embodiment of the present invention, but not limited thereto, the cross section of the element body is planar or arc-shaped, and the electrode pairs (11, 12) are spaced on the planar or arc surface. Simple structure can install raindrop detecting element in the object plane side of the first lens of the module of making a video recording, or on the annular groove between the object plane side of first lens and the image plane side, or make a video recording in the module gland and lie in the glass substrate lateral surface before first lens, realizes multiple installation matching mode, and adaptability is better.
Still further, as a preferred embodiment of the present invention, but not limited thereto, the element body is a flexible transparent substrate layer. In this embodiment, the flexible transparent substrate layer includes, but is not limited to, a PET film layer. An ITO conductive film covers the substrate layer, and the ITO conductive film is etched to form an ITO conductive bar; or the substrate layer is provided with a touch film, and the touch film is provided with a nano wire.
Still further, as a preferable embodiment of the present invention, but not limited thereto, the pair of electrodes (11, 12) is embedded on the element body and flush with the upper surface of the element body. The structure is simple.
Further, as a preferred embodiment of the present invention, but not limited thereto, the overall thickness of the element body is 0.6 to 1 mm. Simple structure, the installation does not influence the product volume.
As shown in fig. 8 to 10, an embodiment of the present invention further discloses a camera module, which at least includes an optical lens, and the raindrop detection element is installed in the optical lens.
According to the raindrop detection element or the camera module provided by the embodiment of the invention, when water drops or water vapor is condensed on the electrode pairs arranged at intervals, the electric signals between the electrode pairs arranged at intervals can be changed, so that a sensing signal whether raindrops or water vapor exist is formed, automatic detection of the raindrops or the water vapor is realized in rainy and foggy days such as cold weather, damp weather or rain weather, and an accurate detection control signal is provided for the control of automatically removing the raindrops and the water vapor of the subsequent camera module.
As shown in fig. 8, the embodiment of the present invention further discloses a raindrop detection and moisture removal lens, which includes a first lens 2 and a heating sheet 3 capable of heating the first lens 2, wherein the first lens 2 is further provided with a raindrop detection element 1.
According to the lens for removing raindrops and water vapor in raindrop detection, the raindrop detection element is arranged on the first lens, so that automatic raindrop or water vapor detection is realized in rainy and foggy days such as cold weather, humid weather or rainy weather, and accurate detection control signals are provided for the subsequent control of automatically removing raindrops and water vapor.
Further, as shown in fig. 13 and 14, the raindrop detection element 1 is provided on the object surface side of the first lens 2 as a preferred embodiment of the present embodiment without limitation. Simple structure, simple to operate can realize raindrop or steam automated inspection accurately.
Still further, as a preferred embodiment of the present invention, but not limited thereto, as shown in fig. 13 and 14, the first lens 2 is an integral lens, or the first lens 2 is a combined lens formed by splitting and gluing. Simple structure can realize raindrop or steam automated inspection accurately.
Further, as a preferred embodiment of the present embodiment, but not limited thereto, as shown in fig. 8 to 12, the first lens 2 is a split cemented combination lens, and the raindrop detection element 1 is provided between cemented surfaces of the combination lens. Simple structure, raindrop detecting element installs compacter, can accurately realize raindrop or steam automated inspection.
Still further, as a preferred embodiment of the present invention, but not limited thereto, as shown in fig. 8 to 12, the combined lens includes a front lens 21 and a rear lens 22, as shown in fig. 11, an annular groove 210 is formed on a side of the front lens 21 opposite to the bonding surface of the rear lens 22, and the raindrop detection element 1 is disposed on the annular groove 210. Simple structure, raindrop detecting element simple to operate, the structure is compacter, can accurately realize raindrop or steam automated inspection.
Still further, as a preferred embodiment of the present embodiment, but not limited thereto, as shown in fig. 8 to 14, the heat patch is provided on the image plane side of the first lens 2. Simple structure conveniently carries out heat treatment to first lens.
As shown in fig. 15, the embodiment of the present invention further discloses an automatic heating raindrop-removing and moisture-removing camera module for raindrop detection, which at least includes a lens barrel 4, a first lens 2 disposed at the front end of the lens barrel 4, a pressing cover 5 matched with the front end of the lens barrel 4 to lock the first lens 2 on the lens barrel 4, and a heating sheet 3 capable of heating the first lens 2, wherein the first lens 2 is further provided with a raindrop detection element 1.
According to the automatic heating, raindrop removing and steam removing camera module for raindrop detection, provided by the embodiment of the invention, the raindrop detection element is arranged on the first lens, so that automatic raindrop or steam detection is realized in rainy and foggy days such as cold weather, humid weather or rain, and accurate detection control signals are provided for the subsequent control of automatically removing raindrops and steam.
Further, as a preferred embodiment of the present embodiment but not limited thereto, as shown in fig. 15, the front end of the lens barrel 4 is large, the rear end is small, the front end of the lens barrel 4 is concavely provided with an accommodating cavity matched with the first lens 2, a second wiring groove 42 penetrating through the accommodating cavity is disposed inside the accommodating cavity and near the outer side wall of the accommodating cavity, a first wiring groove 41 is disposed on the upper side of the outer side wall of the accommodating cavity, and the first wiring groove 41 and the second wiring groove 42 respectively extend along the optical axis direction of the camera module. The first wiring groove 41 is used for a wiring terminal for electrically connecting the raindrop detection element 1 to penetrate out of the first wiring groove 41; and a second wiring groove 42 through which a wiring terminal for electrically connecting the heat generating sheet 3 is inserted. Simple structure, straight line convenience and beautiful appearance.
Still further, as a preferred embodiment of the present embodiment, but not limited thereto, as shown in fig. 15, the first lens 2 is a split cemented combination lens, and the raindrop detection element 1 is provided between cemented surfaces of the combination lens. Simple structure, raindrop detecting element installs compacter, can accurately realize raindrop or steam automated inspection.
Further, as a preferred embodiment of the present invention but not limited thereto, as shown in fig. 11, the combined lens 2 includes a front lens 21 and a rear lens 22, an annular groove 210 is formed on a side of the front lens 21 opposite to the bonding surface of the rear lens 22, and the raindrop detection element 1 is disposed on the annular groove 210. Simple structure, raindrop detecting element simple to operate, the structure is compacter, can accurately realize raindrop or steam automated inspection.
As shown in fig. 18, the embodiment of the present invention further discloses an external raindrop detection automatic heating raindrop-removing and moisture-removing camera module, which at least includes a lens barrel 4, a first lens 2 disposed at the front end of the lens barrel 4, a pressing cover 5 matched with the front end of the lens barrel 4 to lock the first lens 2 on the lens barrel 4, and a heating sheet 3 capable of heating the first lens 2, wherein an outer surface of an object plane side of the first lens 2 is provided with a raindrop detection element 1.
According to the external raindrop detection automatic heating raindrop and water vapor removal camera module, the raindrop detection element is arranged on the first lens, so that raindrop or water vapor automatic detection is realized in rainy and foggy days such as cold, humid or rainy days, and accurate detection control signals are provided for the control of subsequently automatically removing raindrops and water vapor.
Further, as a preferred embodiment of the present embodiment, but not limited thereto, as shown in fig. 18 and 19, the first lens 2 is a one-piece lens, and the heater chip 3 is provided on the image plane side of the first lens 2.
As shown in fig. 19, the embodiment of the present invention further discloses a press cover type raindrop detection automatic heating raindrop removal and moisture removal camera module, which at least includes a lens barrel 4, a first lens 2 disposed at the front end of the lens barrel 4, and a press cover 5 matched with the front end of the lens barrel 4 to lock the first lens 2 on the lens barrel 4, a glass substrate 6 is further disposed between the front end surface of the press cover 5 and the first lens 2, the outer surface of the glass substrate 6 is provided with a raindrop detection element 1, and the inner surface of the glass substrate 6 is provided with a heating sheet 3 capable of heating the glass substrate.
According to the press cover type raindrop detection automatic heating, raindrop removal and steam removal camera module, the raindrop detection element is arranged on the glass substrate in front of the first lens, so that raindrop or steam automatic detection is realized in rainy and foggy weather such as cold weather, humid weather or rain, and accurate detection control signals are provided for the control of automatic raindrop removal and steam removal.
Further, as a preferred embodiment of the present embodiment, but not limited thereto, a spacer is further disposed between the glass substrate 6 and the first lens 2.
Still further, the embodiment of the present invention further discloses a control circuit, which is matched with the camera module shown in fig. 14, 18 and 19, and is used for automatically starting and heating the heating sheet 3 of the camera module when the raindrop detection element 1 detects that raindrops or water vapor exist on the outer surface of the first lens 2 or on the outer surface of the glass substrate 6, so as to realize the function of automatically removing raindrops and water vapor.
Further, as a preferred implementation of this embodiment and not by way of limitation, as shown in fig. 20-22, the control circuit includes:
the input end of the detection circuit is electrically connected with the raindrop detection element 1, and the raindrop detection element 1 is used for acquiring a sensing signal whether raindrops or moisture exist on the first lens or outside the first lens;
the output end of the driving circuit is electrically connected with the heating sheet 3 and is used for driving the heating sheet 3 to stop/start;
and the microprocessor is connected with the detection circuit and the driving circuit and is used for controlling the driving circuit according to the sensing signal. When raindrop detecting element 1 detects that 2 surfaces of first lens, or 6 surfaces of glass substrate have raindrops or steam, make 3 automatic start-ups heats of piece that generate heat of module of making a video recording to realize removing the function that the raindrop removed steam automatically.
Still further, as a preferred implementation manner of this embodiment but not limited thereto, as shown in fig. 21, the detection circuit includes an operational amplifier U7, an output pin OUTA of the operational amplifier U7 is connected to the acquisition terminal raidrop Detect of the rainfall sensing signal through line resistors R18 and R19, and a capacitor C34 is connected in parallel to two ends of the resistor R18; the output pin OUTA of the operational amplifier U7 is connected to the microprocessor U6 for feeding back the first signal Dout of the presence or absence of raindrops, and the non-inverting pin INA + of the operational amplifier U7 is connected to the microprocessor U6 for feeding back the second signal Aout of the magnitude of rainfall; the output pin of the operational amplifier U7 is connected with the low potential end of an LED indicator light LED1, the negative phase pin INA-of the operational amplifier U7 is grounded through a sliding resistor R20, and the connecting point of the line resistor R18 and the line resistor R19 is connected with the sliding arm end of the sliding resistor R20 to realize feedback regulation. .
Still further, as a preferred implementation manner of this embodiment without limitation, as shown in fig. 22, the driving circuit includes a transistor Q3, resistors R13 and R14, a field effect transistor U5, and a plurality of filter capacitors, a source of the field effect transistor U5 is connected to a dc source, a drain thereof is used as an electrical output terminal of the driving circuit, and the plurality of filter capacitors are connected in parallel; the resistor R13 and the resistor R14 are connected in series and then connected between a source electrode and a ground end of the field effect transistor U5, a connecting point of the resistor R13 and the resistor R14 is connected with a grid electrode of the field effect transistor U5, the triode Q3 is connected with the resistor R14 in parallel, a base electrode of the triode Q3 is connected with the microprocessor, two ends of the resistor R13 are connected with a voltage stabilizing tube D4 in parallel, and the triode Q3 is controlled by a PWM signal of the microprocessor to realize on/off.
The working principle of the control circuit is as follows:
after the circuit is powered on, the output of the raindrop detection element 1 continuously generates a high level signal, the high level signal is captured by the detection circuit, the LED indicator lamp is turned off, and the microprocessor judges that no raindrop exists at the moment; when raindrops are on the first lens or outside the first lens, due to the capacity sensing characteristic of the raindrop detection element 1, the rainfall sensing signal is changed from high level to low level, the LED indicating lamp is lightened, the microprocessor responds immediately, and the heating piece is started to heat the first lens.
In specific implementation, the microprocessor acquires a first signal Dout from the output end of the operational amplifier, and directly reflects whether raindrops exist at present; obtaining a second signal Aout from the non-inverting leg of the operational amplifier, wherein the second signal Aout reflects the variation of the first signal Dout synchronously, and the peak value of the second signal Aout is smaller and can be identified by the microprocessor; when the rain condition lasts, the microprocessor adjusts the frequency of the PWM signal output by the microprocessor, so that the effective heating power is improved, and raindrops or water vapor is not accumulated on the first lens 2 or the glass substrate 6 of the camera module.
The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the practice of the invention to the particular forms disclosed. Similar or identical methods, structures and the like as those of the present invention or several technical deductions or substitutions made on the premise of the conception of the present invention should be considered as the protection scope of the present invention.

Claims (10)

1. The external raindrop detection automatic heating raindrop removing and water vapor removing camera module at least comprises a lens barrel, a first lens arranged at the front end of the lens barrel, a gland matched with the front end of the lens barrel to lock the first lens on the lens barrel, and a heating sheet capable of heating the first lens, and is characterized in that an raindrop detection element is arranged on the outer surface of the object side of the first lens.
2. The external raindrop detection self-heating raindrop-removing and moisture-removing camera module according to claim 1, further comprising a control circuit, the control circuit comprising:
the input end of the detection circuit is electrically connected with the raindrop detection element, and the raindrop detection element is used for acquiring a sensing signal whether raindrops or water vapor exist on the first lens or outside the first lens;
the output end of the driving circuit is electrically connected with the heating sheet and is used for driving the heating sheet to stop/start;
and the microprocessor is connected with the detection circuit and the driving circuit and is used for controlling the driving circuit according to the sensing signal.
3. The external raindrop detection, self-heating, raindrop-removing, and moisture-removing camera module according to claim 1 or 2, wherein the first lens is an integral lens or a split cemented combination lens.
4. The external raindrop detection self-heating raindrop-removing and moisture-removing camera module according to claim 3, wherein the heating sheet is disposed on the side of the first transparent mirror surface.
5. The external raindrop detection self-heating raindrop-removing and moisture-removing camera module according to claim 4, wherein the raindrop detection element includes an element body, and electrode pairs are printed on the element body at intervals.
6. The external raindrop detection automatic heating raindrop-removing and steam-removing camera module according to claim 5, wherein when raindrops or steam exist, the electrode pairs arranged at intervals on the element body output low-level sensing signals; when no raindrop or water vapor exists, the electrode pairs arranged on the element body at intervals output high-level sensing signals.
7. The external raindrop detection, self-heating, raindrop removal, and moisture removal camera module of claim 2, wherein the detection circuit comprises an operational amplifier, an output pin of the operational amplifier is connected to the acquisition end of the rainfall sensor signal through a plurality of line resistors, the output pin of the operational amplifier is connected to the microprocessor to feed back the first signal of the presence or absence of raindrops, and the positive pin of the operational amplifier is connected to the microprocessor to feed back the second signal of the magnitude of rainfall.
8. The external raindrop detection automatic heating raindrop-removing and steam-removing camera module according to claim 7, wherein line resistors R18 and R19 are connected in series between the output pin of the operational amplifier and the acquisition end of the rainfall sensing signal, and a capacitor C34 is connected in parallel at two ends of the resistor R18; the output pin of the operational amplifier is connected with the low potential end of an LED indicator lamp, the negative phase pin of the operational amplifier is grounded through a sliding resistor R20, and the connecting point of the line resistor R18 and the line resistor R19 is connected with the sliding arm end of the sliding resistor R20 to realize feedback regulation.
9. The external raindrop detection, automatic heating, raindrop removal and steam removal camera module of claim 2, wherein the driving circuit comprises a transistor Q3, resistors R13 and R14, a field effect transistor U5, and a plurality of filter capacitors, wherein a source of the field effect transistor U5 is connected to a dc source, a drain thereof is used as an electrical output terminal of the driving circuit, and the plurality of filter capacitors are connected in parallel; the resistors R13 and R14 are connected in series and then connected between the source electrode of the field effect transistor U5 and the ground, the connection point of the resistors R13 and R14 is connected with the grid electrode of the field effect transistor U5, the triode Q3 is connected with the resistor R14 in parallel, and the base electrode of the triode Q3 is connected to the microprocessor.
10. The external raindrop detection automatic heating raindrop-removing and steam-removing camera module as claimed in claim 2, wherein a voltage regulator tube D4 is connected in parallel to two ends of the resistor R13.
CN202010508314.8A 2020-04-30 2020-04-30 External raindrop detection automatic heating raindrop removing and steam removing camera module Active CN111812919B (en)

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Application Number Priority Date Filing Date Title
CN202010508314.8A CN111812919B (en) 2020-04-30 2020-04-30 External raindrop detection automatic heating raindrop removing and steam removing camera module

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CN202010361907.6A CN111474810A (en) 2020-04-30 2020-04-30 Raindrop detection automatic heating raindrop removing and steam removing camera module
CN202010508314.8A CN111812919B (en) 2020-04-30 2020-04-30 External raindrop detection automatic heating raindrop removing and steam removing camera module

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CN202010361907.6A Division CN111474810A (en) 2020-04-30 2020-04-30 Raindrop detection automatic heating raindrop removing and steam removing camera module

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CN111812919A true CN111812919A (en) 2020-10-23
CN111812919B CN111812919B (en) 2022-07-05

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Citations (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030160158A1 (en) * 2002-02-28 2003-08-28 Hirotsugu Ishino Raindrop/light beam detecting sensor and auto-wiper device
JP2007303887A (en) * 2006-05-09 2007-11-22 Denso Corp Raindrop detection device
JP2008167047A (en) * 2006-12-27 2008-07-17 Canon Marketing Japan Inc Control device, and its control method, and program
JP2009139159A (en) * 2007-12-05 2009-06-25 Niles Co Ltd Raindrop detecting device
JP2010249531A (en) * 2009-04-10 2010-11-04 Fujikura Ltd Raindrop detector and wiper operation controller
KR20120083629A (en) * 2011-01-18 2012-07-26 인천대학교 산학협력단 Rain sensor and control method therefor
CN202617253U (en) * 2012-06-11 2012-12-19 天津市嘉安电子技术有限公司 Protective cover of monitoring camera with windshield wiper
CN102830632A (en) * 2012-08-16 2012-12-19 北京奥特易电子科技有限责任公司 Monitor with cleaning device
JP2014043178A (en) * 2012-08-28 2014-03-13 Mitsubishi Motors Corp Automatic wiper device
CN204155106U (en) * 2014-11-10 2015-02-11 朱俞再 A kind of Intellective airer control circuit
CN104477132A (en) * 2015-01-02 2015-04-01 江苏新瑞峰信息科技有限公司 Automobile automatic windscreen wiper control system
CN104894821A (en) * 2015-06-25 2015-09-09 苏州市英富美欣科技有限公司 Intelligent filter clothes hanger
CN104967768A (en) * 2015-07-10 2015-10-07 山东神戎电子股份有限公司 Camera window glass automatic windshield wiper dust removing device and method
CN105564379A (en) * 2016-01-27 2016-05-11 大连楼兰科技股份有限公司 Automatic starting system and method for automobile windshield wiper
CN206442439U (en) * 2016-11-30 2017-08-25 深圳安联智能控股集团有限公司 A kind of camera
CN107495820A (en) * 2017-10-20 2017-12-22 苏州博众精工科技有限公司 A kind of intelligent curtain
CN107861396A (en) * 2017-12-17 2018-03-30 湖南工程学院 A kind of intelligent bedroom system based on Internet of Things
CN207586696U (en) * 2017-12-17 2018-07-06 湖南工程学院 A kind of detecting system for bedroom
CN108279337A (en) * 2017-01-05 2018-07-13 兰州大学 The function module of raindrop charge quantity measuring is charged in thunder cloud
CN108541372A (en) * 2017-07-31 2018-09-14 深圳市大疆创新科技有限公司 Capture apparatus and unmanned plane
CN208156395U (en) * 2017-11-20 2018-11-27 广东弘景光电科技股份有限公司 Automatic heating camera module
CN110095922A (en) * 2019-06-05 2019-08-06 广东弘景光电科技股份有限公司 Multiple detection heats camera module automatically
CN209657065U (en) * 2019-03-20 2019-11-19 闽南理工学院 A kind of outdoor image acquisition equipment
CN110618570A (en) * 2019-08-21 2019-12-27 广东弘景光电科技股份有限公司 Automatic heating method and device for camera module
CN110769197A (en) * 2019-10-28 2020-02-07 南京茗淇信息科技有限公司 Outdoor monitoring equipment with good heat dissipation effect based on 5G network

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6124647A (en) * 1998-12-16 2000-09-26 Donnelly Corporation Information display in a rearview mirror
JP2003280078A (en) * 2002-03-22 2003-10-02 Fuji Photo Film Co Ltd Waterproof camera
TWM267124U (en) * 2004-03-02 2005-06-11 Chia-Jung Chang Droplet sensing and controlling system
CN2765181Y (en) * 2005-01-28 2006-03-15 孙滕谌 Sensor for automatic rain brush system
GB0606425D0 (en) * 2006-03-30 2006-05-10 1 Ltd Camera lens actuation apparatus
CN2922285Y (en) * 2006-06-08 2007-07-11 孙滕谌 Planar condenser sensor
WO2008129290A1 (en) * 2007-04-23 2008-10-30 Cambridge Mechatronics Limited Control circuits for an sma actuator
CN102687042B (en) * 2009-10-02 2014-11-26 麦格纳覆盖件有限公司 Vehicular anti-pinch system with rain compensation
CN102155969A (en) * 2011-03-18 2011-08-17 深圳和而泰智能控制股份有限公司 Water level detecting circuit, device and method
US9752370B2 (en) * 2015-07-13 2017-09-05 Ford Global Technologies, Llc Rain onset detection auto-close user interface
CN106125464A (en) * 2016-08-23 2016-11-16 苏州国创电子科技有限公司 A kind of camera lens and apply the photographic head of this camera lens
US10274449B2 (en) * 2016-10-17 2019-04-30 Robert Bosch Gmbh Capacitive moisture sensor system for a surveillance camera
CN106772699B (en) * 2016-12-30 2020-01-10 广州周立功单片机科技有限公司 Rainfall detection system and rainfall state detection method and device
US10499017B2 (en) * 2017-05-17 2019-12-03 Ford Global Technologies, Llc Rear camera with defroster and embedded proximity switch
CN207675194U (en) * 2017-10-12 2018-07-31 江苏奥特富朗电子科技有限公司 A kind of planar capacitance sensor of misty rain detection
CN107741680A (en) * 2017-11-20 2018-02-27 广东弘景光电科技股份有限公司 Automatic heating camera module
CN207867572U (en) * 2018-02-08 2018-09-14 三峡大学 A kind of image defogging automobile data recorder
CN209466960U (en) * 2018-11-02 2019-10-08 北京奥特易电子科技有限责任公司 The windshield and automobile of function are covered with rain, mist amount detection function and electronics
CN209149041U (en) * 2018-12-12 2019-07-23 广东弘景光电科技股份有限公司 Camera module with automatic heating function
CN209149043U (en) * 2018-12-12 2019-07-23 广东弘景光电科技股份有限公司 Heating device
CN110830689A (en) * 2019-10-18 2020-02-21 广州奥松电子有限公司 Camera with anti-fogging function, anti-fogging control method and storage medium

Patent Citations (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030160158A1 (en) * 2002-02-28 2003-08-28 Hirotsugu Ishino Raindrop/light beam detecting sensor and auto-wiper device
JP2007303887A (en) * 2006-05-09 2007-11-22 Denso Corp Raindrop detection device
JP2008167047A (en) * 2006-12-27 2008-07-17 Canon Marketing Japan Inc Control device, and its control method, and program
JP2009139159A (en) * 2007-12-05 2009-06-25 Niles Co Ltd Raindrop detecting device
JP2010249531A (en) * 2009-04-10 2010-11-04 Fujikura Ltd Raindrop detector and wiper operation controller
KR20120083629A (en) * 2011-01-18 2012-07-26 인천대학교 산학협력단 Rain sensor and control method therefor
CN202617253U (en) * 2012-06-11 2012-12-19 天津市嘉安电子技术有限公司 Protective cover of monitoring camera with windshield wiper
CN102830632A (en) * 2012-08-16 2012-12-19 北京奥特易电子科技有限责任公司 Monitor with cleaning device
JP2014043178A (en) * 2012-08-28 2014-03-13 Mitsubishi Motors Corp Automatic wiper device
CN204155106U (en) * 2014-11-10 2015-02-11 朱俞再 A kind of Intellective airer control circuit
CN104477132A (en) * 2015-01-02 2015-04-01 江苏新瑞峰信息科技有限公司 Automobile automatic windscreen wiper control system
CN104894821A (en) * 2015-06-25 2015-09-09 苏州市英富美欣科技有限公司 Intelligent filter clothes hanger
CN104967768A (en) * 2015-07-10 2015-10-07 山东神戎电子股份有限公司 Camera window glass automatic windshield wiper dust removing device and method
CN105564379A (en) * 2016-01-27 2016-05-11 大连楼兰科技股份有限公司 Automatic starting system and method for automobile windshield wiper
CN206442439U (en) * 2016-11-30 2017-08-25 深圳安联智能控股集团有限公司 A kind of camera
CN108279337A (en) * 2017-01-05 2018-07-13 兰州大学 The function module of raindrop charge quantity measuring is charged in thunder cloud
CN108541372A (en) * 2017-07-31 2018-09-14 深圳市大疆创新科技有限公司 Capture apparatus and unmanned plane
CN107495820A (en) * 2017-10-20 2017-12-22 苏州博众精工科技有限公司 A kind of intelligent curtain
CN208156395U (en) * 2017-11-20 2018-11-27 广东弘景光电科技股份有限公司 Automatic heating camera module
CN107861396A (en) * 2017-12-17 2018-03-30 湖南工程学院 A kind of intelligent bedroom system based on Internet of Things
CN207586696U (en) * 2017-12-17 2018-07-06 湖南工程学院 A kind of detecting system for bedroom
CN209657065U (en) * 2019-03-20 2019-11-19 闽南理工学院 A kind of outdoor image acquisition equipment
CN110095922A (en) * 2019-06-05 2019-08-06 广东弘景光电科技股份有限公司 Multiple detection heats camera module automatically
CN110618570A (en) * 2019-08-21 2019-12-27 广东弘景光电科技股份有限公司 Automatic heating method and device for camera module
CN110769197A (en) * 2019-10-28 2020-02-07 南京茗淇信息科技有限公司 Outdoor monitoring equipment with good heat dissipation effect based on 5G network

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