CN114779558A - Press cover type raindrop detection automatic heating camera module - Google Patents
Press cover type raindrop detection automatic heating camera module Download PDFInfo
- Publication number
- CN114779558A CN114779558A CN202210408701.3A CN202210408701A CN114779558A CN 114779558 A CN114779558 A CN 114779558A CN 202210408701 A CN202210408701 A CN 202210408701A CN 114779558 A CN114779558 A CN 114779558A
- Authority
- CN
- China
- Prior art keywords
- lens
- raindrop
- raindrop detection
- camera module
- operational amplifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 93
- 238000010438 heat treatment Methods 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 239000011521 glass Substances 0.000 claims abstract description 22
- 230000005669 field effect Effects 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000009123 feedback regulation Effects 0.000 claims description 3
- 210000004907 gland Anatomy 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002070 nanowire Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- 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 a press cover type raindrop detection automatic heating camera module, which at least comprises a lens cone, a first lens arranged at the front end of the lens cone and a press cover matched with the front end of the lens cone to lock the first lens on the lens cone, wherein a glass substrate is also arranged between the front end surface of the press cover and the first lens, the outer surface of the glass substrate is provided with a raindrop detection element, and the inner surface of the glass substrate is provided with a heating sheet capable of heating the raindrop detection element. According to the press-cover type raindrop detection automatic heating camera module, the raindrop detection element is arranged on the glass substrate in front of the first lens, so that raindrop or water vapor automatic detection is realized in rainy and foggy days such as cold weather, humid weather or rain weather, and accurate detection control signals are provided for control of automatic raindrop removal and water vapor removal.
Description
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 a gland type raindrop detection automatic heating camera module.
The background art comprises the following steps:
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 sleet fog weather such as cold, moist, or rainy to reach the effect that the automatic raindrop that removes steam.
The invention content is as follows:
in order to solve the problem that the existing camera module generally cannot realize automatic raindrop or vapor detection, the embodiment of the invention provides a press cover type raindrop detection automatic heating camera module.
The press cover type raindrop detection automatic heating camera module at least comprises a lens cone, a first lens arranged at the front end of the lens cone and a press cover matched with the front end of the lens cone to lock the first lens on the lens cone, wherein a glass substrate is arranged between the front end surface of the press cover and the first lens, a raindrop detection element is arranged on the outer surface of the glass substrate, and a heating piece capable of heating the glass substrate is arranged on the inner surface of the glass substrate;
still include control circuit, this control circuit includes:
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;
the microprocessor is connected with the detection circuit and the driving circuit and used for controlling the driving circuit according to the sensing signal;
the detection circuit comprises an operational amplifier, wherein an output pin of the operational amplifier is connected to an acquisition end of a rainfall sensing signal through a plurality of line resistors, the output pin of the operational amplifier is connected to the microprocessor to feed back a first signal indicating whether raindrops exist or not, and a positive phase pin of the operational amplifier is connected to the microprocessor to feed back a second signal indicating the rainfall;
a line resistor R18 and a line resistor 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 light, the negative phase pin of the operational amplifier is grounded through a sliding resistor R20, and the connection 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;
the microprocessor acquires a first signal Dout from the output end of the operational amplifier and directly reflects whether raindrops exist at present or not; 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, and the effective heating power is improved.
According to the press-cover type raindrop detection automatic heating camera module, the raindrop detection element is arranged on the glass substrate in front of the first lens, so that raindrop or water vapor automatic detection is realized in rainy and foggy days such as cold weather, humid weather or rain weather, and accurate detection control signals are provided for control of automatic raindrop removal and water vapor removal.
Description of the drawings:
in order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a first schematic structural diagram of an embodiment of a raindrop detection element according to 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 the 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 the second exploded view of FIG. 9;
FIG. 13 is a perspective view of another embodiment of a raindrop detection, raindrop removal, 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 a control circuit of the present invention;
FIG. 21 is a schematic diagram of a 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 "first", "second", etc. ordinal terms, it should be understood that they are used for distinguishing purposes only, 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 of whether raindrops or water vapor exist is formed, automatic detection of raindrops or water vapor is realized in rainy and foggy days such as cold weather, damp weather or rainy weather, and accurate detection control signals are provided for control of automatically removing raindrops and water vapor of the subsequent camera module.
Further, as a preferred embodiment of the present invention, but not limited to, 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 ring-shaped. 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 preferable embodiment of the present invention, 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 a touch film is arranged on the base material layer, and a nano wire is arranged on the touch film.
Still further, as a preferred 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 back does not influence the product volume.
As shown in fig. 8-10, 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 water vapor 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 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. 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 without limitation, as shown in fig. 8 to 12, the first lens 2 is a split cemented compound lens, and the raindrop detection element 1 is provided between cemented surfaces of the compound 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 water vapor removing camera module for raindrop detection, disclosed by the embodiment of the invention, raindrop detection elements are arranged on the first lens, so that automatic raindrop or water vapor detection is realized in rainy and foggy days such as cold weather, damp weather or rainy weather, and accurate detection control signals are provided for the subsequent control of automatically removing raindrops and water vapor.
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 electrically connected with the raindrop detection element 1 to penetrate through the first wiring groove 41; and a second wire slot 42 through which a 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 heating sheet 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-cap type raindrop detection automatic heating 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 cap 5 that is 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 cap 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 that can heat the raindrop detection element.
According to the press-cover type raindrop detection automatic heating camera module, the raindrop detection element is arranged on the glass substrate in front of the first lens, so that raindrop or water vapor automatic detection is realized in rainy and foggy days such as cold weather, humid weather or rain weather, and accurate detection control signals are provided for control of automatic raindrop removal and water vapor removal.
Further, as a preferred embodiment of the present invention, 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 stop/start of the heating sheet 3;
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 rain sensing signal obtaining terminal Raindrop Detect 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 connection 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 the present 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, wherein a source of the field effect transistor U5 is connected to a direct current source, a drain of the field effect transistor U5 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 to the microprocessor, two ends of the resistor R13 are connected with the voltage regulator 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 light 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 and structures as those of the present invention or several technical deductions or substitutions on the premise of the idea of the present invention should be regarded as the protection scope of the present invention.
Claims (6)
1. The automatic heating camera module for detecting raindrops with a press cover at least comprises a lens cone, a first lens arranged at the front end of the lens cone and a press cover matched with the front end of the lens cone to lock the first lens on the lens cone, and is characterized in that,
a glass substrate is arranged between the front end face of the gland and the first lens, a raindrop detection element is arranged on the outer surface of the glass substrate, and a heating sheet capable of heating the glass substrate is arranged on the inner surface of the glass substrate;
still include control circuit, this control circuit includes:
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;
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;
the detection circuit comprises an operational amplifier, wherein an output pin of the operational amplifier is connected to an acquisition end of a rainfall sensing signal through a plurality of line resistors, the output pin of the operational amplifier is connected to the microprocessor to feed back a first signal indicating whether raindrops exist or not, and a positive phase pin of the operational amplifier is connected to the microprocessor to feed back a second signal indicating the rainfall;
a line resistor R18 and a line resistor 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;
the microprocessor acquires a first signal Dout from the output end of the operational amplifier and directly reflects whether raindrops exist currently or not; 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 is continuous, the microprocessor adjusts the frequency of the PWM signal output by the microprocessor, and the effective heating power is improved.
2. The press-cover type raindrop detection automatic heating camera module according to claim 1, wherein the first lens is an integral lens or a combined lens formed by split gluing.
3. The press-cover raindrop detection automatic heating camera module according to claim 1 or 2, wherein the raindrop detection element includes an element body on which electrode pairs are printed at intervals.
4. The press-cover raindrop detection automatic heating camera module according to claim 1 or 2, wherein when raindrops or water vapor exists, 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.
5. The press-cover type raindrop detection automatic heating camera module according to claim 1 or 2, wherein the driving circuit comprises a triode Q3, resistors R13 and R14, a field effect tube U5, and a plurality of filter capacitors, a source of the field effect tube U5 is connected to a direct current source, a drain of the field effect tube U5 is used as an electrical output end 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 end, 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.
6. The press-cover raindrop detection and automatic heating camera module according to claim 1 or 2, wherein two ends of a resistor R13 are connected in parallel with a voltage regulator tube D4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210408701.3A CN114779558B (en) | 2020-04-30 | 2020-04-30 | Gland type automatic heating camera module for raindrop detection |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210408701.3A CN114779558B (en) | 2020-04-30 | 2020-04-30 | Gland type automatic heating camera module for raindrop detection |
| CN202010361907.6A CN111474810A (en) | 2020-04-30 | 2020-04-30 | Raindrop detection automatic heating raindrop removing and steam removing camera module |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010361907.6A Division CN111474810A (en) | 2020-04-30 | 2020-04-30 | Raindrop detection automatic heating raindrop removing and steam removing camera module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114779558A true CN114779558A (en) | 2022-07-22 |
| CN114779558B CN114779558B (en) | 2024-04-09 |
Family
ID=71762103
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010508314.8A Active CN111812919B (en) | 2020-04-30 | 2020-04-30 | External raindrop detection automatic heating raindrop removing and steam removing camera module |
| CN202210408701.3A Active CN114779558B (en) | 2020-04-30 | 2020-04-30 | Gland type automatic heating camera module for raindrop detection |
| CN202010508312.9A Active CN111812918B (en) | 2020-04-30 | 2020-04-30 | Press cover type raindrop detection automatic heating raindrop removing and steam removing camera module |
| CN202010508284.0A Active CN111812921B (en) | 2020-04-30 | 2020-04-30 | Raindrop detection element and camera module applying same |
| CN202010361907.6A Pending CN111474810A (en) | 2020-04-30 | 2020-04-30 | Raindrop detection automatic heating raindrop removing and steam removing camera module |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010508314.8A Active CN111812919B (en) | 2020-04-30 | 2020-04-30 | External raindrop detection automatic heating raindrop removing and steam removing camera module |
Family Applications After (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010508312.9A Active CN111812918B (en) | 2020-04-30 | 2020-04-30 | Press cover type raindrop detection automatic heating raindrop removing and steam removing camera module |
| CN202010508284.0A Active CN111812921B (en) | 2020-04-30 | 2020-04-30 | Raindrop detection element and camera module applying same |
| CN202010361907.6A Pending CN111474810A (en) | 2020-04-30 | 2020-04-30 | Raindrop detection automatic heating raindrop removing and steam removing camera module |
Country Status (1)
| Country | Link |
|---|---|
| CN (5) | CN111812919B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008129290A1 (en) * | 2007-04-23 | 2008-10-30 | Cambridge Mechatronics Limited | Control circuits for an sma actuator |
| CN101416090A (en) * | 2006-03-30 | 2009-04-22 | 1...有限公司 | Camera lens actuation apparatus |
| WO2019095488A1 (en) * | 2017-11-20 | 2019-05-23 | 广东弘景光电科技股份有限公司 | Camera module with automatic heating function |
| 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 |
Family Cites Families (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6124647A (en) * | 1998-12-16 | 2000-09-26 | Donnelly Corporation | Information display in a rearview mirror |
| JP2003254897A (en) * | 2002-02-28 | 2003-09-10 | Denso Corp | Apparatus for detecting rain drop and automatic wiper apparatus |
| 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 |
| JP2007303887A (en) * | 2006-05-09 | 2007-11-22 | Denso Corp | Raindrop detection device |
| CN2922285Y (en) * | 2006-06-08 | 2007-07-11 | 孙滕谌 | Planar condenser sensor |
| JP4480177B2 (en) * | 2006-12-27 | 2010-06-16 | キヤノンマーケティングジャパン株式会社 | Control device, control method thereof, 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 |
| WO2011038514A1 (en) * | 2009-10-02 | 2011-04-07 | Magna Closures Inc. | Vehicular anti-pinch system with rain compensation |
| KR20120083629A (en) * | 2011-01-18 | 2012-07-26 | 인천대학교 산학협력단 | Rain sensor and control method therefor |
| 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 |
| 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 |
| CN102830632B (en) * | 2012-08-16 | 2014-11-26 | 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 |
| CN104967768B (en) * | 2015-07-10 | 2018-08-28 | 山东神戎电子股份有限公司 | A kind of camera window glass automatic rain brushes dirt device and method |
| US9752370B2 (en) * | 2015-07-13 | 2017-09-05 | Ford Global Technologies, Llc | Rain onset detection auto-close user interface |
| CN105564379B (en) * | 2016-01-27 | 2018-08-10 | 大连楼兰科技股份有限公司 | A kind of automobile wiper automatic starting method |
| 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 |
| 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 |
| 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 |
| 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 |
| US10499017B2 (en) * | 2017-05-17 | 2019-12-03 | Ford Global Technologies, Llc | Rear camera with defroster and embedded proximity switch |
| WO2019023897A1 (en) * | 2017-07-31 | 2019-02-07 | 深圳市大疆创新科技有限公司 | Photographing device and unmanned aerial vehicle |
| 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 |
| 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 |
| CN107861396B (en) * | 2017-12-17 | 2023-12-15 | 湖南工程学院 | 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 |
| 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 |
| CN209149043U (en) * | 2018-12-12 | 2019-07-23 | 广东弘景光电科技股份有限公司 | Heating device |
| 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 |
| 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 |
| 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 |
| CN110769197B (en) * | 2019-10-28 | 2021-07-09 | 南京茗淇信息科技有限公司 | Outdoor monitoring equipment based on 5G network |
-
2020
- 2020-04-30 CN CN202010508314.8A patent/CN111812919B/en active Active
- 2020-04-30 CN CN202210408701.3A patent/CN114779558B/en active Active
- 2020-04-30 CN CN202010508312.9A patent/CN111812918B/en active Active
- 2020-04-30 CN CN202010508284.0A patent/CN111812921B/en active Active
- 2020-04-30 CN CN202010361907.6A patent/CN111474810A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101416090A (en) * | 2006-03-30 | 2009-04-22 | 1...有限公司 | Camera lens actuation apparatus |
| WO2008129290A1 (en) * | 2007-04-23 | 2008-10-30 | Cambridge Mechatronics Limited | Control circuits for an sma actuator |
| WO2019095488A1 (en) * | 2017-11-20 | 2019-05-23 | 广东弘景光电科技股份有限公司 | Camera module with automatic heating function |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 朱力强;罗婷;蔺潇;: "基于压电效应的雨量与雨滴谱检测", 振动.测试与诊断, no. 01, 15 February 2020 (2020-02-15) * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111812919B (en) | 2022-07-05 |
| CN111474810A (en) | 2020-07-31 |
| CN111812921A (en) | 2020-10-23 |
| CN114779558B (en) | 2024-04-09 |
| CN111812918A (en) | 2020-10-23 |
| CN111812921B (en) | 2023-02-28 |
| CN111812918B (en) | 2022-07-05 |
| CN111812919A (en) | 2020-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100469628C (en) | Moisture detection system and method of use thereof | |
| EP0890143B1 (en) | A window capacitive moisture sensor | |
| KR20080084913A (en) | Capacitive rain sensor | |
| RU2000122444A (en) | CARD MODULE WITH INTEGRAL DIAGRAM FOR BIOMETRIC SENSORS | |
| JPH048837B2 (en) | ||
| CN111812918B (en) | Press cover type raindrop detection automatic heating raindrop removing and steam removing camera module | |
| CA2053328A1 (en) | System for indicating and signalling the presence of snow and ice | |
| WO2009115131A1 (en) | Detection of water ingress to an apparatus by resistance measurments between two electrodes | |
| CN212255990U (en) | Raindrop removing and water vapor removing lens for raindrop detection | |
| CN212229402U (en) | Raindrop detection automatic heating raindrop removing and steam removing camera module | |
| FR2763476A3 (en) | Irrigating arrangement for domestic potted plants for householders | |
| KR100943401B1 (en) | Rain Sensor for Vehicle and Sensing Method thereof | |
| CN111505888A (en) | Raindrop removing and water vapor removing lens for raindrop detection | |
| KR20080086859A (en) | Sensor array for the detection of humidity on a window | |
| CN102007819A (en) | Non-toxic photo cells and photosensors including the same | |
| KR20080021729A (en) | Apparatus for detecting vehicle window fogging status | |
| CN100467316C (en) | Moisture detection system and method of use thereof | |
| CN204254504U (en) | Be provided with the lampshade of high-voltage insecticidal electrode | |
| CN210093609U (en) | LED driving power supply control circuit | |
| CN111459080A (en) | Module raindrop of making a video recording detects self-heating control circuit | |
| CN210427430U (en) | Energy self-supply wireless alarm device based on humidity triggering | |
| JPH026356Y2 (en) | ||
| US20070013533A1 (en) | "P" alert | |
| JP3054264B2 (en) | Water drop sensor | |
| CN209914146U (en) | Light-operated switch structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |