CN109375457A - Camera module with automatic heating function - Google Patents
Camera module with automatic heating function Download PDFInfo
- Publication number
- CN109375457A CN109375457A CN201811517812.8A CN201811517812A CN109375457A CN 109375457 A CN109375457 A CN 109375457A CN 201811517812 A CN201811517812 A CN 201811517812A CN 109375457 A CN109375457 A CN 109375457A
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- camera module
- heating device
- singlechip chip
- heating function
- resistance
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 52
- 206010037660 Pyrexia Diseases 0.000 claims abstract description 17
- 230000017525 heat dissipation Effects 0.000 claims description 15
- 239000003990 capacitor Substances 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000003381 stabilizer Substances 0.000 claims description 8
- 125000004122 cyclic group Chemical group 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000004880 explosion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Studio Devices (AREA)
Abstract
The embodiment of the invention discloses a kind of camera modules with automatic heating function, it includes at least camera lens and the heating device on camera lens, further include: singlechip chip and temperature sensing circuit, temperature sensing circuit is electrically connected with the input terminal of singlechip chip, and the temperature signal that will test is sent to singlechip chip, heating device is electrically connected with the output end of singlechip chip, singlechip chip according to received temperature signal control heating device open/stop.The heating device of the embodiment of the present invention, camera module can control opening/stopping for fever tablet according to the temperature signal detected, so that the effect for removing frost, demisting automatically may be implemented in camera module under the weather conditions such as cold or humidity or environment.Suitable for various fields such as on-vehicle lens, outdoor monitorings.
Description
Technical field:
The present invention relates to a kind of camera module, especially a kind of camera module with automatic heating function.
Background technique:
Existing camera module does not have automatic heating function generally, can not be in weather conditions or environment such as cold or humidities
It is lower to realize the effect for going white demisting automatically.
Summary of the invention:
It, can not be in weather conditions or rings such as cold or humidities to overcome existing camera module not have automatic heating function
The problem of going white defogging effect automatically is realized under border, the embodiment of the invention provides a kind of camera shooting mould with automatic heating function
Group.
Camera module with automatic heating function includes at least camera lens and the heating device on camera lens, also wraps
Include: singlechip chip and temperature sensing circuit, temperature sensing circuit are electrically connected with the input terminal of singlechip chip, and will inspection
The temperature signal measured is sent to singlechip chip, and heating device is electrically connected with the output end of singlechip chip, singlechip chip
According to received temperature signal control heating device open/stop.
The heating device of the embodiment of the present invention, camera module can be according to the temperature signal control fever tablet detected
It opens/stops, so that the effect for removing frost, demisting automatically may be implemented in camera module under the weather conditions such as cold or humidity or environment.
Suitable for various fields such as on-vehicle lens, outdoor monitorings.
Detailed description of the invention:
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the driving circuit structure schematic diagram of the camera module of the embodiment of the present invention；
Fig. 2 is that the singlechip chip of camera module of the embodiment of the present invention and the connection circuit structure of temperature sensing circuit show
It is intended to；
Fig. 3 is the voltage conversion circuit structural schematic diagram of the camera module of the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the camera module of the embodiment of the present invention；
Fig. 5 is the A-A cut-away view of Fig. 4；
Fig. 6 is the perspective view of the explosion one of the camera module of the embodiment of the present invention；
Fig. 7 is the perspective view of the explosion two of the camera module of the embodiment of the present invention；
Fig. 8 is the structural schematic diagram of the heating device of the embodiment of the present invention.
Specific embodiment:
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
When the embodiment of the present invention refers to the ordinal numbers such as " first ", " second ", unless based on context its express really it is suitable
The meaning of sequence, it should be understood that only play differentiation and be used.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As shown in Fig. 2, Fig. 5, a kind of camera module with automatic heating function includes at least camera lens 1 and is set to mirror
Heating device 2 on head, further includes: singlechip chip U10 (model TM57MA15) and temperature sensing circuit, temperature detection electricity
Road is electrically connected with the input terminal of singlechip chip U10, and the temperature signal that will test is sent to singlechip chip U10, heating
Device 2 is electrically connected with the output end of singlechip chip U10, and singlechip chip U10 is according to the received temperature signal control heating of institute
Device 2 opens/stops.
The heating device of the embodiment of the present invention, camera module can be according to the temperature signal control fever tablet detected
It opens/stops, so that the effect for removing frost, demisting automatically may be implemented in camera module under the weather conditions such as cold or humidity or environment.
Suitable for various fields such as on-vehicle lens, outdoor monitorings.
In the present embodiment, heating device 2 is set between the first lens and lens barrel of camera lens 1, and the heating surface of heating device 2 is made
Image planes side for the first lens.Heating device directly acts on the first lens, can quickly remove frost, demisting.
Further, non-limiting as the preferred embodiment of the present invention, as shown in figure 8, temperature sensing circuit is at least
Including temperature sensor 21, heating device 2 is fever tablet, and temperature sensor 21 is set in fever tablet and is close to camera lens 1.Structure
Simply, by the temperature of the available camera lens of temperature sensor, if temperature is lower than preset value, it is meant that cold or moist
Under equal weather conditions or environment, occurs frosting on camera lens or the situation that hazes, then singlechip chip U10 controls fever tablet starting, real
Now go the effect of frost, demisting；Meanwhile temperature sensor is set in fever tablet, can monitor the Current Temperatures of fever tablet in real time, if
The Current Temperatures of fever tablet are excessively high, then singlechip chip U10 controls fever tablet and stops working or adjust pwm control signal, can
To be automatically turned off fever tablet, avoid occurring high-temperature condition inside camera lens, influence camera lens after frosting or the situation that hazes are eliminated
Energy.
Still further, it is non-limiting as the preferred embodiment of the present invention, as shown in figure 8, fever tablet has ring-type
Mainboard, cyclic annular mainboard are installed on camera lens and are provided with heater element, and temperature sensor 21 is set to cyclic annular mainboard outer surface.Structure
Simply, the temperature of camera lens can be obtained and monitor the Current Temperatures of fever tablet in real time, provide accurate temperature letter for singlechip chip U10
Number, to control the working condition of fever tablet.
Further, non-limiting as the preferred embodiment of the present invention, as shown in Figure 1, singlechip chip U10 with
Be provided with driving circuit between heating device 2, driving circuit include triode Q1A and Q1B, voltage-stabiliser tube D3, power transistor U8,
Resistance R28, resistance R29 and capacitor C49, C50, C51 and C52；Triode Q1B is positive-negative-positive pipe, emitter connection+12V
DC source, collector are grounded through resistance R29, the collector of base stage connecting triode Q1A；The emitter of triode Q1A connects
Ground, substrate are connected to singlechip chip U10 to obtain pwm control signal；The grid connecting triode Q1B of power transistor U8
Collector, the emitter of source electrode connecting triode Q1B, and voltage-stabiliser tube D3 and electricity have been arranged in parallel between grid and source electrode
R28 is hindered, drain electrode is connected to the heating device and is connected to described capacitor C49, C50, C51 and C52.
Further, as shown in Figure 1, non-limiting as the preferred embodiment of the present invention, triode Q1B and+12V is straight
Fuse F1 is provided between stream source.
Further, non-limiting as the preferred embodiment of the present invention, as shown in Fig. 2, temperature sensing circuit is also
Including the RC network being set between temperature sensor and singlechip chip U10 input terminal, RC network includes being parallel to temperature sensing
Resistance R31 and capacitor C53 between device output pin and ground terminal.Buffer function is played to the output pulsation of temperature sensor, is avoided
External disturbance has an impact the output electric signal of temperature sensor.
Further, non-limiting as the preferred embodiment of the present invention, as shown in figure 3, further including for input
The voltage conversion circuit that supply voltage is depressured, the voltage conversion circuit include voltage conversion chip U12 (model
LM53601MQDSXRQ1 or LM53601AQDSXRQ1), voltage-stabiliser tube D5, inductance coil L7, resistance R147, resistance R148, capacitor
C59, C60, C61 and C62, voltage conversion chip U12 have input terminal VIN, output end SW and feedback end FB, and input terminal VIN connects
Connect+12V DC source and it being arranged in parallel capacitor C61, C62 and voltage-stabiliser tube D5, output end SW is through inductance coil L7 generation+5V electricity
Pressure output, is provided with capacitor C59 between output end SW and feedback end FB, resistance R147 and R148 be connected in series in inductance coil L7 with
Between ground terminal, capacitor C60 is in parallel with resistance R147 and R148, and the tie point of resistance R147 and R148 are connected with feedback end FB.
Further, non-limiting as the preferred embodiment of the present invention, temperature sensor 21 is NTC thermistor.
Still further, non-limiting as the preferred embodiment of the present invention, as shown in Figures 4 to 7, the present invention is also wrapped
It includes:
Front housing 31 offers the shooting viewfinder window 30 opposite with camera lens 1；
Matrix 32 is matched with front housing 31, is equipped with mounting base, and the first heat dissipation cavity 311, mirror are formed between front housing 31
First 1 is set in mounting base and is located at the first heat dissipation cavity 311, and 1 front end of camera lens shoots viewfinder window 30 with front housing 31 and offsets；
Rear shell 33 is matched with matrix 32, and the second heat dissipation cavity 312, a pcb board 12 and matrix are formed between matrix 32
32 connections, and be located in the second heat dissipation cavity 312.Structure is simple, easy to assembly, compact, has great heat radiation effect.
Further, non-limiting as the preferred embodiment of the present invention, as shown in figure 5,32 lower section of matrix and mirror
First 1 tail end corresponding position is equipped with sensitive chip 11.Structure is simple.
Still further, it is non-limiting as the preferred embodiment of the present invention, as shown in figure 5, singlechip chip U10,
Temperature sensing circuit, driving circuit and voltage conversion circuit are set on pcb board 12, are equipped with above pcb board 12 and sensitive chip
The ports of 11 electrical connections and the Wiring port that be electrically connected with heating device 2, lower section equipped with image pickup signal coffret 121, with
And power interface 122.Structure is simple.
Further, non-limiting as the preferred embodiment of the present invention, as shown in Figure 6, Figure 7, set in rear shell 33
There are opening 332 corresponding with power interface 122 and opening 331 corresponding with image pickup signal coffret 121.Structure letter
It is single.
Further, non-limiting as the preferred embodiment of the present invention, as shown in Figure 5, Figure 6, on matrix 32 in
A radiating convection holes 321 are offered by mounting base, the radiating convection holes 321 and the first heat dissipation cavity 311 and the second heat dissipation cavity 312 connect
Logical, electric connection line and connecting terminal on heating device 2 pass through radiating convection holes 321 and are electrically connected with the connecting terminal on pcb board 12
It connects.Structure is simple, good heat dissipation effect.
Still further, it is non-limiting as the preferred embodiment of the present invention, as shown in Figure 5, Figure 6, radiating convection holes
Area S1 and matrix area S2 meet: S1:S2=1:2~4.Good heat dissipation effect.
Further, non-limiting as the preferred embodiment of the present invention, as shown in Figures 5 to 7,31 lower edge of front housing
Equipped with the first positioning protrusion, 32 upper surface of matrix is equipped with the first positioning groove, and the first positioning protrusion and the first positioning groove match
It closes, and is equipped with the first sealing ring 301 between the two；And/or along the second positioning protrusion is equipped in rear shell 33,32 lower surface of matrix is set
There is the second positioning groove, the second positioning protrusion is matched with the second positioning groove, and is equipped with the second sealing ring 302 between the two.
Waterproof effect is good.
Further, non-limiting as the preferred embodiment of the present invention, as shown in Figures 5 to 7,1 front end of camera lens
It is shot with front housing 31 and is equipped with third sealing ring 303 between viewfinder window 30.Waterproof effect is good.
Further, non-limiting as the preferred embodiment of the present invention, as shown in Figures 4 to 7, four side of front housing
Face is equipped with the radiating fin extended longitudinally, and rear shell surrounding side also is provided with the radiating fin extended longitudinally.Heat dissipation effect is good
It is good.
The specific start-up and shut-down control principle of the embodiment of the present invention is to pass through the temperature sensor 21 connecting in Fig. 2 with J3 interface
Ambient temperature signal is obtained, then read the electricity output of J3 interface by singlechip chip U10 and voltage is become by A/D conversion
Value, current temperature T value, if T is within a preset range, single-chip microcontroller are being calculated according to the attribute of voltage value and temperature sensor 21
The heating device 2 or close its PWM pin that chip U10 is not connect in operation diagram 1 with J4 interface, make heating device 2 stop work
Make, then proceedes to the value for obtaining temperature sensor 21, judge next second temperature T.If T is lower than the lower limit value of preset range, single
Piece machine core piece U10 starts PWM pin, and heating device 2 is made to work or save PWM pin working condition.If T is higher than preset range
Upper limit value, singlechip chip U10 close PWM pin, so that heating device 2 is stopped working, then proceed to read temperature sensor 21
Value, judge next second T, so recycle.
It is the one or more embodiments provided in conjunction with particular content as described above, does not assert specific reality of the invention
It applies and is only limited to these instructions.It is all approximate with method of the invention, structure etc., identical, or for present inventive concept under the premise of
Several technology deduction or replace are made, all should be considered as protection scope of the present invention.
Claims (10)
1. the camera module with automatic heating function includes at least camera lens and the heating device on camera lens, feature
It is, further includes: the input terminal of singlechip chip and temperature sensing circuit, temperature sensing circuit and singlechip chip is electrically connected
The temperature signal that connects, and will test is sent to singlechip chip, and heating device is electrically connected with the output end of singlechip chip, single
Piece machine core piece according to received temperature signal control heating device open/stop.
2. as described in claim 1 with the camera module of automatic heating function, which is characterized in that temperature sensing circuit at least wraps
Temperature sensor is included, heating device is fever tablet, and temperature sensor is set in fever tablet and is close to camera lens.
3. as claimed in claim 2 with the camera module of automatic heating function, which is characterized in that fever tablet has cyclic annular main
Plate, cyclic annular mainboard are installed on camera lens and are provided with heater element, and temperature sensor is set to cyclic annular mainboard outer surface.
4. the camera module as described in any one of claims 1-3 with automatic heating function, which is characterized in that singlechip chip
Driving circuit is provided between heating device, driving circuit includes triode Q1A and Q1B, voltage-stabiliser tube D3, power transistor
U8, resistance R28, resistance R29 and capacitor C49, C50, C51 and C52；Triode Q1B be positive-negative-positive pipe, emitter connection+
12V DC source, collector are grounded through resistance R29, the collector of base stage connecting triode Q1A；The emitter of triode Q1A
Ground connection, substrate are connected to singlechip chip to obtain pwm control signal；The grid connecting triode Q1B of power transistor U8
Collector, the emitter of source electrode connecting triode Q1B, and voltage-stabiliser tube D3 and electricity have been arranged in parallel between grid and source electrode
R28 is hindered, drain electrode is connected to the heating device and is connected to described capacitor C49, C50, C51 and C52.
5. as claimed in claim 2 or claim 3 with the camera module of automatic heating function, which is characterized in that temperature sensing circuit is also
Including the RC network being set between temperature sensor and singlechip chip input terminal, RC network is defeated including being parallel to temperature sensor
Resistance R31 and capacitor C53 between foot and ground terminal out.
6. the camera module as described in any one of claims 1-3 with automatic heating function, which is characterized in that further include being used for
To the voltage conversion circuit that input supply voltage is depressured, the voltage conversion circuit includes voltage conversion chip, voltage-stabiliser tube
D5, inductance coil L7, resistance R147, resistance R148, capacitor C59, C60, C61 and C62, voltage conversion chip have input terminal
VIN, output end SW and feedback end FB, input terminal VIN connection+12V DC source and have been arranged in parallel capacitor C61, C62 and voltage-stabiliser tube
D5, output end SW are provided with capacitor C59 through inductance coil L7 generation+5V voltage output between output end SW and feedback end FB,
Resistance R147 and R148 are connected in series between inductance coil L7 and ground terminal, and capacitor C60 is in parallel with resistance R147 and R148, resistance
The tie point of R147 and R148 is connected with feedback end FB.
7. the camera module as described in any one of claims 1-3 with automatic heating function, which is characterized in that further include
Front housing offers the shooting viewfinder window opposite with camera lens；
Matrix is matched with front housing, is equipped with mounting base, and the first heat dissipation cavity is formed between front housing, and camera lens is set to mounting base
In and be located at the first heat dissipation cavity, and camera lens front end and front housing shoot viewfinder window and offset；
Rear shell is matched with matrix, and the second heat dissipation cavity is formed between matrix, and a pcb board is located in the second heat dissipation cavity.
8. as claimed in claim 7 with the camera module of automatic heating function, which is characterized in that rear shell is equipped with and connects with power supply
The corresponding opening of mouth and opening corresponding with image pickup signal coffret.
9. as claimed in claim 8 with the camera module of automatic heating function, which is characterized in that opened by mounting base on matrix
Equipped with a radiating convection holes, which is connected to the first heat dissipation cavity and the second heat dissipation cavity, the electrical connection on heating device
Line and connecting terminal pass through radiating convection holes and are electrically connected with the connecting terminal on pcb board.
10. as claimed in claim 9 with the camera module of automatic heating function, which is characterized in that front housing lower edge is equipped with first
Positioning protrusion, body upper surface are equipped with the first positioning groove, and the first positioning protrusion matches with the first positioning groove, and the two it
Between be equipped with the first sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811517812.8A CN109375457A (en) | 2018-12-12 | 2018-12-12 | Camera module with automatic heating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811517812.8A CN109375457A (en) | 2018-12-12 | 2018-12-12 | Camera module with automatic heating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109375457A true CN109375457A (en) | 2019-02-22 |
Family
ID=65374318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811517812.8A Pending CN109375457A (en) | 2018-12-12 | 2018-12-12 | Camera module with automatic heating function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109375457A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111399563A (en) * | 2020-03-24 | 2020-07-10 | Oppo广东移动通信有限公司 | User terminal equipment |
| CN111459080A (en) * | 2020-04-30 | 2020-07-28 | 广东弘景光电科技股份有限公司 | Module raindrop of making a video recording detects self-heating control circuit |
| CN112839145A (en) * | 2019-11-22 | 2021-05-25 | 余姚舜宇智能光学技术有限公司 | TOF camera module, manufacturing method thereof and electronic equipment |
| CN113259562A (en) * | 2021-05-12 | 2021-08-13 | 杭州华橙软件技术有限公司 | Demisting device and demisting method |
| CN114047661A (en) * | 2019-06-05 | 2022-02-15 | 广东弘景光电科技股份有限公司 | Miniaturized self-heating module of making a video recording |
| CN114721206A (en) * | 2022-03-26 | 2022-07-08 | 上海欧菲智能车联科技有限公司 | Camera module, lens defogging method, storage medium and vehicle |
| CN114839829A (en) * | 2022-03-14 | 2022-08-02 | 惠州市德赛西威智能交通技术研究院有限公司 | Method and device for automatically heating and deicing, defrosting and fogging of vehicle-mounted lens |
| EP4333557A1 (en) * | 2022-09-02 | 2024-03-06 | Faurecia Clarion Electronics (Xiamen) Co., Ltd. | Heating system and method for controlling the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114047661A (en) * | 2019-06-05 | 2022-02-15 | 广东弘景光电科技股份有限公司 | Miniaturized self-heating module of making a video recording |
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| CN111399563B (en) * | 2020-03-24 | 2021-10-19 | Oppo广东移动通信有限公司 | User terminal equipment |
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| CN111459080A (en) * | 2020-04-30 | 2020-07-28 | 广东弘景光电科技股份有限公司 | Module raindrop of making a video recording detects self-heating control circuit |
| CN113259562A (en) * | 2021-05-12 | 2021-08-13 | 杭州华橙软件技术有限公司 | Demisting device and demisting method |
| CN113259562B (en) * | 2021-05-12 | 2023-04-07 | 杭州华橙软件技术有限公司 | Demisting device and demisting method |
| CN114839829A (en) * | 2022-03-14 | 2022-08-02 | 惠州市德赛西威智能交通技术研究院有限公司 | Method and device for automatically heating and deicing, defrosting and fogging of vehicle-mounted lens |
| CN114721206A (en) * | 2022-03-26 | 2022-07-08 | 上海欧菲智能车联科技有限公司 | Camera module, lens defogging method, storage medium and vehicle |
| EP4333557A1 (en) * | 2022-09-02 | 2024-03-06 | Faurecia Clarion Electronics (Xiamen) Co., Ltd. | Heating system and method for controlling the same |
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