CN113231401A - Electrostatic dust removal device and camera - Google Patents
Electrostatic dust removal device and camera Download PDFInfo
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- CN113231401A CN113231401A CN202110526820.4A CN202110526820A CN113231401A CN 113231401 A CN113231401 A CN 113231401A CN 202110526820 A CN202110526820 A CN 202110526820A CN 113231401 A CN113231401 A CN 113231401A
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- dust removal
- transparent conductive
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- camera
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- 239000000428 dust Substances 0.000 title claims abstract description 87
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 239000012528 membrane Substances 0.000 claims abstract description 12
- 239000012717 electrostatic precipitator Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 8
- 229920002799 BoPET Polymers 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 6
- 229910001887 tin oxide Inorganic materials 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000004544 sputter deposition Methods 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 239000012716 precipitator Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 18
- 230000005684 electric field Effects 0.000 abstract description 13
- 238000012544 monitoring process Methods 0.000 abstract description 9
- 238000004720 dielectrophoresis Methods 0.000 abstract description 6
- 230000003749 cleanliness Effects 0.000 abstract description 5
- 230000003993 interaction Effects 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000011086 high cleaning Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000026058 directional locomotion Effects 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000007958 sleep Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B6/00—Cleaning by electrostatic means
Landscapes
- Camera Bodies And Camera Details Or Accessories (AREA)
- Studio Devices (AREA)
Abstract
The invention provides an electrostatic dust removal device and a camera. The electrostatic dust removal device comprises a transparent substrate, a dust removal circuit, a controller and a power supply module; the dust removal circuit is positioned on the surface of the transparent substrate and comprises a plurality of transparent conductive membrane electrodes; the power module is electrically connected with the controller and the dust removal circuit, so that power provided by the power module is converted into a plurality of paths of power with different frequencies through the controller and then is transmitted to the electrodes of the transparent conductive films, the electrodes of the transparent conductive films are connected with the power with different frequencies to generate uneven electric fields, dust is subjected to interaction of coulomb force and dielectrophoresis force in the uneven electric fields to move around directionally, and the dust falls off from the surfaces of the electrodes of the transparent conductive films to achieve the purpose of dust removal. The electrostatic dust removal device is applied to a device to be subjected to dust removal, such as a camera, so that the effect of automatic dust removal can be achieved, dust is prevented from accumulating on the surface of the lens, the surface cleanliness of the camera is effectively improved, and the camera shooting and monitoring effects are ensured.
Description
Technical Field
The invention relates to the field of functional films, in particular to a novel electrostatic dust collection device and a camera.
Background
With the development of artificial intelligence technology and the improvement of people's safety precaution consciousness, the camera has obtained extensive installation and application. At present, nearly 6 hundred million cameras are installed domestically. After the camera is used for a long time, a large amount of dust can be accumulated on the surface of the camera lens, and the shooting and monitoring effects of the camera are influenced. In order to ensure the shooting effect, the camera needs to be regularly maintained and cleaned. However, the cameras are mostly installed at high positions, the manual cleaning cost is high, the efficiency is low, and the mirror surface abrasion of the cameras is easily caused in the manual cleaning process, so that the monitoring definition is reduced.
Disclosure of Invention
In view of the above drawbacks of the prior art, an object of the present invention is to provide a novel electrostatic dust collector and a camera, which are used to solve the problems of high cost, low efficiency, and easy damage to the camera in the conventional camera.
In order to achieve the above objects and other related objects, the present invention provides an electrostatic precipitator including a transparent substrate, a precipitation circuit, a controller, and a power module; the dust removal circuit is positioned on the surface of the transparent substrate and comprises a plurality of transparent conductive membrane electrodes; the power module is electrically connected with the controller and the dust removal circuit, so that the power provided by the power module is converted into a plurality of paths of power with different frequencies by the controller and then is transmitted to the transparent conductive membrane electrodes.
Optionally, the power module comprises a three-phase power generating circuit, the controller controls the three-phase power generating circuit to generate three-phase power with different frequencies, and the dust removing circuit comprises 3 transparent conductive membrane electrodes.
Optionally, the power module includes full-bridge single-phase inverter circuit, transformer and bridge rectifier circuit that the electricity is connected in proper order, full-bridge single-phase inverter circuit turns into the alternating current with the direct current, after transformer circuit turned into high-voltage electric energy with low pressure electric energy, through bridge rectifier circuit converts alternating current electric energy into direct current electric energy.
Optionally, the full-bridge unidirectional inverter circuit includes two parallel-connected bridge arms and a filter circuit, each bridge arm includes two series-connected power switching tubes, a connection node of the two power switching tubes is an output end of each bridge arm, the filter circuit is configured to filter a high-frequency component generated in the circuit, and the bridge rectifier circuit includes a diode.
Optionally, the transparent substrate comprises a PET film.
Optionally, the material of the transparent conductive film electrode comprises one or more of indium tin oxide, aluminum-doped zinc oxide, fluorine-doped tin oxide and antimony-doped tin oxide.
Optionally, the method for forming the transparent conductive film electrode includes sputtering a transparent conductive film layer on the surface of the transparent substrate, and performing high-temperature annealing treatment on the transparent conductive film layer to obtain the transparent conductive film electrode.
Optionally, the shape of the transparent conductive film electrode is a spiral shape.
Optionally, the controller is a singlechip based on an Arduino platform.
The invention also provides a camera which comprises a camera module and the electrostatic dust removal device in any scheme, wherein the transparent substrate of the electrostatic dust removal device is attached to the surface of the lens of the camera module.
As mentioned above, the electrostatic dust removal device provided by the invention has the following beneficial effects: the power supply provided by the power supply module is converted into a plurality of paths of power supplies with different frequencies by the controller and then is transmitted to the electrodes of the transparent conducting films, the electrodes of the transparent conducting films are switched on the power supplies with different frequencies to generate uneven electric fields, and dust on the surfaces of the electrodes of the transparent conducting films is subjected to the interaction of coulomb force and dielectrophoresis force in the uneven electric fields to move directionally to the periphery, so that the dust falls off from the surfaces of the electrodes of the transparent conducting films to achieve the aim of dust removal. The electrostatic dust removal device is applied to a device needing dust removal, such as a camera (a transparent substrate is attached to the surface of a lens of the camera), so that the effect of automatic dust removal can be achieved, dust is prevented from accumulating on the surface of the lens, the surface cleanliness of the camera is effectively improved, and the camera shooting and monitoring effects are ensured.
Drawings
Fig. 1 shows a block diagram of an exemplary structure of an electrostatic precipitator according to the present invention.
Fig. 2 is a schematic structural diagram of a transparent conductive membrane electrode of an electrostatic dust collector according to an exemplary embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a power module of an electrostatic precipitator according to the present invention.
FIG. 4 shows an exemplary timing diagram of multiple power sources generated for a power module.
Fig. 5 is a flowchart illustrating an exemplary dust removing process of the electrostatic dust removing apparatus according to the present invention.
Fig. 6 is a schematic diagram showing the dust removing direction of the electrostatic dust removing device provided by the invention. .
Description of the element reference numerals
1 transparent substrate
2 transparent conductive film electrode
21 first electrode
22 second electrode
23 third electrode
3 controller
4 power supply module
41 full-bridge unidirectional inverter circuit
42 transformer
43 bridge rectifier circuit
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1 to 6. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship may be made without substantial technical changes.
In order to ensure the safety of the masses and effectively attack crimes, cameras are installed in a plurality of public spaces. After the camera works for a period of time, a large amount of dust can be accumulated on the surface of the lens, and the shooting and monitoring effects of the camera are influenced. In order to ensure the shooting effect, the camera needs to be regularly maintained and cleaned. However, the cameras are mostly installed at high positions, the manual cleaning cost is high, the efficiency is low, and the mirror surface abrasion of the cameras is easily caused in the manual cleaning process, so that the monitoring definition is reduced. Therefore, the invention provides an improvement scheme which can be used for automatically removing dust on the surface of the camera.
Specifically, as shown in fig. 1 to 6, the present invention provides an electrostatic precipitator, which includes a transparent substrate 1, a precipitation circuit, a controller 3, and a power module 4; the dust removal circuit is positioned on the surface of the transparent substrate 1 and comprises a plurality of transparent conductive film electrodes 2; the power module 4 is electrically connected with the controller 3 and the dust removal circuit, so that the power supply provided by the power module 4 is converted into a plurality of paths of power supplies with different frequencies through the controller 3 and then is transmitted to the transparent conductive film electrodes 2, the transparent conductive film electrodes 2 are switched on the power supplies with different frequencies to generate uneven electric fields, dust on the surfaces of the transparent conductive film electrodes 2 is acted by coulomb force and dielectrophoresis force in the uneven electric fields to move directionally to the periphery, and therefore the dust falls off from the surfaces of the transparent conductive film electrodes 2 to achieve the purpose of dust removal. Therefore, if the electrostatic dust removal device is applied to a device needing dust removal, such as a camera (the transparent substrate 1 is attached to the surface of the lens of the camera), the electrostatic dust removal device can achieve the effect of automatic dust removal, and dust is prevented from accumulating on the surface of the lens, so that the surface cleanliness of the camera is effectively improved, and the camera and monitoring effects are ensured. The electrostatic dust removal device can automatically remove dust without influencing the normal operation of the camera, and has the advantages of good cleaning effect, high cleaning efficiency, no damage to the surface of the lens and the like. The electrostatic dust collection device has the advantages of small volume, low cost, convenient installation and high flexibility.
As an example, the power module 4 includes a three-phase power generating circuit, and the controller 3 controls to generate three-phase power with different frequencies; correspondingly, the dust removing circuit comprises 3 transparent conductive membrane electrodes 2, such as a first electrode 21, a second electrode 22 and a third electrode 23 which are illustrated in fig. 2, and each electrode is connected to a power supply. The device structure can be simplified by adopting the three-phase power supply generating circuit. Of course, in other examples, the number of the transparent conductive film electrodes 2 may also be 4 or more, and thus the power module 4 may also have other structures, such as a plurality of single-phase power supplies, which is not strictly limited.
As an example, the controller 3 is a single chip microcomputer based on an Arduino platform, the Arduino is used as a main control unit, cross-platform development is supported, code compiling is simple and clear, learning cost is low, core library files are open-source, and secondary development is facilitated. The Arduino main control unit is matched with a three-phase power supply generating circuit to generate three-phase power supplies with different frequencies to supply power to the transparent conductive membrane electrode 2.
As shown in fig. 3, in an example, the power module 4 includes a full-bridge single-phase inverter circuit 41, a transformer 42 and a bridge rectifier circuit 43 electrically connected in sequence, the full-bridge single-phase inverter circuit 41 converts direct current into alternating current, the transformer 42 converts low-voltage electric energy into high-voltage electric energy, and then the bridge rectifier circuit 43 converts the alternating current electric energy into direct current electric energy, thereby implementing voltage amplification, for example, converting direct current 12V into direct current 1500V. The controller 3 controls the generation of the high-voltage three-phase power according to the timing chart shown in fig. 4. The timing diagram of the three-phase power source is shown in fig. 4, wherein A, B, C represents three different phases of the three-phase power source respectively, and the effect of changing the power frequency is achieved by changing the time t. And the whole circuit, the controller 3 and the conversion voltage are all 12V, so that a good foundation is provided for system miniaturization, and the flexibility of the system is improved.
In a further example, the full-bridge unidirectional inverter circuit 41 includes two parallel-connected bridge arms and a filter circuit, each bridge arm includes two series-connected power switch tubes, and a connection node of the two power switch tubes is an output end of each bridge arm; the LC constitutes a filter circuit for filtering out high frequency components doped in the circuit, the transformer 42 includes an iron core (or a magnetic core) and a coil, and the bridge rectifier circuit 43 includes a diode. Of course, in other examples, each circuit may have another structure as long as it can realize its own function, and this is not strictly limited.
As an example, the transparent substrate 1 includes, but is not limited to, a PET film, but preferably a PET film, and the PET film is preferably a single layer. The PET film has the advantages of good transparency, high mechanical strength, corrosion resistance and the like, and can well protect a dust removal device, such as a camera, without affecting the definition of the camera.
By way of example, the material of the transparent conductive film electrode 2 includes, but is not limited to, indium tin oxide, aluminum-doped zinc oxide, fluorine-doped tin oxide, and antimony-doped tin oxide. In a preferred scheme, the transparent conductive film electrode 2 is preferably made of indium tin oxide transparent metal, and has the advantages of high light transmittance (greater than or equal to 82%), high transparency, good expansibility and the like, so that various required shapes can be prepared according to different surface appearances of a device to be dedusted.
In one example, the method for forming the transparent conductive film electrode 2 includes sputtering a transparent conductive film layer on the surface of the transparent substrate 1, and then performing a high-temperature annealing process on the transparent conductive film layer to form the transparent conductive film electrode 2, which facilitates to rapidly and inexpensively prepare an electrode with a desired shape, and facilitates to further expand the application range of the electrostatic dust removal device of the present invention.
In an example, the transparent conductive film electrode 2 is in a spiral shape (refer to fig. 2), and the electrodes are arranged at intervals, so that the distribution area of the electrodes can be expanded in an effective space, and the improvement of the dust removal efficiency is facilitated.
The dedusting program flow chart of the electrostatic dedusting device is shown in fig. 5, and Arduino IDE software mainly adopts C language to compile Arduino single chip microcomputer program in the program design process, and the IDE supports cross-platform operation, is simple and clear to operate and has strong openness. After the system is started and initialized, the three-phase power supply frequency, the system working time and the dormancy standby time of the system are respectively changed by changing t, run _ t and sleep _ t. The program mainly completes the functions of controlling the frequency of the three-phase power supply and setting the working time and the standby time of the system.
As shown in fig. 6, when the applied electric field is not uniform, the induced dipole moment will interact with the electric field to form a dielectrophoresis force, so that the particles move to the side with stronger or weaker electric field. When the particles are more polarized than the surrounding medium, the particles will move to a region of higher electric field strength. Dielectrophoretic force formula:
where P is the dipole moment of the particle and E is the electric field strength. The dust is subjected to a coulomb force (F) vertically upward on the transparent conductive film electrodeCE.q) and makes directional movement to the periphery under the action of dielectrophoresis force to achieve the aim of dust removal.
The electrostatic dust removal device provided by the invention can be used in various environments needing dust removal, such as dust removal of a camera or dust removal of high-altitude glass. The electrostatic dust removal device provided by the invention can be used for automatically removing dust, and has the advantages of good dust removal efficiency, good dust removal effect and the like.
The invention also provides a camera which comprises a camera module and the electrostatic dust removal device in any scheme, wherein the transparent substrate of the electrostatic dust removal device is attached to the surface of the lens of the camera module. For the introduction of the electrostatic dust removal device, reference is also made to the foregoing, which is not repeated for the sake of brevity. The camera disclosed by the invention can realize automatic cleaning and ensure the surface cleanliness of the lens due to the adoption of the electrostatic dust removal device, thereby being beneficial to ensuring the camera shooting and monitoring effects and prolonging the service life of the camera.
In summary, the present invention provides an electrostatic precipitator and a camera. The electrostatic dust removal device comprises a transparent substrate, a dust removal circuit, a controller and a power supply module; the dust removal circuit is positioned on the surface of the transparent substrate and comprises a plurality of transparent conductive membrane electrodes; the power module is electrically connected with the controller and the dust removal circuit, so that a power supply provided by the power module is converted into a plurality of paths of power supplies with different frequencies through the controller and then is transmitted to the transparent conductive film electrodes, the transparent conductive film electrodes are switched on the power supplies with different frequencies to generate an uneven electric field, and dust on the surfaces of the transparent conductive film electrodes is subjected to interaction of coulomb force and dielectrophoresis force in the uneven electric field and moves directionally to the periphery, so that the dust falls off from the surfaces of the transparent conductive film electrodes to achieve the purpose of dust removal. The electrostatic dust removal device is applied to a device needing dust removal, such as a camera (a transparent substrate is attached to the surface of a lens of the camera), so that the effect of automatic dust removal can be achieved, dust is prevented from accumulating on the surface of the lens, the surface cleanliness of the camera is effectively improved, and the camera shooting and monitoring effects are ensured. The electrostatic dust removal device can automatically remove dust without influencing the normal operation of the camera, and has the advantages of good cleaning effect, high cleaning efficiency, no damage to the surface of the lens and the like. The electrostatic dust collection device has the advantages of small volume, low cost, convenient installation, high flexibility and great utilization value. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. An electrostatic dust removal device is characterized by comprising a transparent substrate, a dust removal circuit, a controller and a power supply module; the dust removal circuit is positioned on the surface of the transparent substrate and comprises a plurality of transparent conductive membrane electrodes; the power module is electrically connected with the controller and the dust removal circuit, so that the power provided by the power module is converted into a plurality of paths of power with different frequencies by the controller and then is transmitted to the transparent conductive membrane electrodes.
2. The electrostatic precipitator according to claim 1, wherein the power supply module comprises a three-phase power supply generating circuit, which is controlled by the controller to generate three-phase power supplies with different frequencies, and the precipitator circuit comprises 3 transparent conductive membrane electrodes.
3. The electrostatic precipitator according to claim 1, wherein the power supply module comprises a full-bridge single-phase inverter circuit, a transformer and a bridge rectifier circuit, which are electrically connected in sequence, the full-bridge single-phase inverter circuit converts direct current into alternating current, and the transformer converts low-voltage electric energy into high-voltage electric energy and then converts the alternating current electric energy into direct current electric energy through the bridge rectifier circuit.
4. The electrostatic dust collector according to claim 3, wherein the full-bridge unidirectional inverter circuit comprises two parallel-connected bridge arms and a filter circuit, each bridge arm comprises two series-connected power switch tubes, the connection node of the two power switch tubes is the output end of each bridge arm, the filter circuit is used for filtering high-frequency components generated in the circuit, and the bridge rectifier circuit comprises diodes.
5. An electrostatic precipitator according to claim 1, in which the transparent substrate comprises a PET film.
6. The electrostatic precipitator according to claim 1, wherein the transparent conductive film electrode is made of a material selected from the group consisting of indium tin oxide, aluminum-doped zinc oxide, fluorine-doped tin oxide, and antimony-doped tin oxide.
7. The electrostatic precipitator according to claim 1, wherein the method of forming the transparent conductive film electrode comprises sputtering a transparent conductive film layer on the surface of the transparent substrate, and then performing a high-temperature annealing process on the transparent conductive film layer to obtain the transparent conductive film electrode.
8. The electrostatic precipitator according to claim 1, wherein the transparent conductive membrane electrode is shaped as a spiral.
9. The electrostatic precipitator of any of claims 1-8 wherein the controller is an Arduino platform based single chip microcomputer.
10. A camera comprising a camera module and an electrostatic precipitator according to any of claims 1-9, wherein a transparent substrate of the electrostatic precipitator is attached to a lens surface of the camera module.
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| CN202110526820.4A CN113231401A (en) | 2021-05-14 | 2021-05-14 | Electrostatic dust removal device and camera |
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| CN202110526820.4A CN113231401A (en) | 2021-05-14 | 2021-05-14 | Electrostatic dust removal device and camera |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20210810 |