CN111729106A - Flexible low-temperature plasma sterilization device - Google Patents
Flexible low-temperature plasma sterilization device Download PDFInfo
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- CN111729106A CN111729106A CN202010616826.6A CN202010616826A CN111729106A CN 111729106 A CN111729106 A CN 111729106A CN 202010616826 A CN202010616826 A CN 202010616826A CN 111729106 A CN111729106 A CN 111729106A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/14—Plasma, i.e. ionised gases
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/24—Apparatus using programmed or automatic operation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/26—Accessories or devices or components used for biocidal treatment
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/2406—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/11—Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/10—Apparatus features
- A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
Abstract
The invention discloses a flexible low-temperature plasma sterilization device used in long and narrow pipelines and other complex gap working environments. The device comprises a flexible actuating system, a low-temperature plasma generating module, a power supply module and a sensing control module; the flexible actuator system is characterized in that the power supply module and the sensing control module are connected with the low-temperature plasma generation module, and the low-temperature plasma generation module is assembled in the flexible actuator system. The device adopts a flexible actuating system to achieve the purpose of penetrating into a long and narrow pipeline and other complex slit working environments; the device carries out dielectric barrier discharge in a working environment, excites working gas into low-temperature plasma, and realizes sterilization operation of a long and narrow pipeline and other complex gap working environments.
Description
Technical Field
The invention belongs to the field of plasma application, particularly relates to sterilization operation of a long and narrow pipeline and other complex gap working environments, and particularly relates to a flexible low-temperature plasma sterilization device.
Background
The continued supply of energy to the substance to raise its temperature generally causes the substance to sequentially transition from a solid state to a liquid state and a liquid state to a gaseous state. During the transition to continuously energize a matter system, gas neutral atoms or molecules are excited by the energy to produce negative electrons, positive and negative ions, and other excited species, such a mixture of charged excited particles, known as a plasma. The plasma is generally generated by breakdown ionization of the gas between the two electrodes. The ionized gas which is electrically neutral and contains a large number of negative electrons, positive ions, negative ions and free radicals forms outside, so that the plasma has unique physical and chemical properties, and the plasma can be used for modifying, cleaning, sterilizing and the like the surface of an object. When a small discharge power is used, the temperature of the plasma is very low, and the direct treatment of human skin can be realized without causing burn to the skin. In addition, the jet plasma can be used for killing equipment materials with micro-gap structures. In addition, because of various free radicals, charged particles, ultraviolet rays and the like contained in the low-temperature plasma, the plasma beams have good effect of killing germs and microorganisms on the surface of the skin. Under the superposition effect of various sterilization mechanisms, the sterilization of the low-temperature plasma has the characteristic of effective drug resistance.
The currently used plasma sterilization equipment generally cannot efficiently process a long and narrow pipeline and other complex gap working environments due to the rapid annihilation of plasma, so that the application of the plasma sterilization equipment has great limitation.
Disclosure of Invention
In view of the above problems, the present invention is directed to a novel flexible low-temperature plasma sterilization apparatus to meet the requirements of sterilization in long and narrow pipelines and other complex gap working environments.
The device comprises a flexible actuating system, a low-temperature plasma generating module, a power supply module and a sensing control module, and is characterized in that the power supply module and the sensing control module are connected with the low-temperature plasma generating module, and the low-temperature plasma generating module is assembled in the flexible actuating system;
the flexible actuating system comprises an outer sheath, a guide wheel and an actuating pipeline, wherein the outer sheath is assembled outside the actuating pipeline and used for protecting the integral integrity of the structure, the guide wheel is installed outside the outer sheath and used for moving, supporting, positioning and assisting steering of the device, the actuating pipeline is made of flexible materials, a low-temperature plasma generating module is coupled inside the actuating pipeline, a plurality of actuating tendons are distributed on the inner surface of the actuating pipeline along the axial direction, the actuating tendons are fixed with the actuating pipeline, and each actuating tendon can be actuated to bend the actuating pipeline so as to change the moving direction of the device;
the low-temperature plasma generating module is formed by axially arranging a plurality of electrode units, each electrode unit comprises an inner electrode, an outer electrode and an electrode fixing piece, the inner electrode and the outer electrode are both annular electrodes which are coaxially arranged, the outer electrode is sleeved outside the inner electrode and fixed by the electrode fixing piece, the outer side of the inner electrode or the inner side of the outer electrode is coated with an insulating medium layer, and when the electrode units are in a working state, working gas in an inner cavity of the electrode fixing piece is excited to generate low-temperature plasma;
the power supply module comprises a high-voltage power supply and a power supply line, wherein the high-voltage power supply is arranged at the near end of the device and provides excitation for the low-temperature plasma generated by the low-temperature plasma generation module through the power supply line;
the sensing control module comprises a gas conveying system and a working state monitoring system, wherein the gas conveying system provides a working gas environment for the low-temperature plasma generation module and controls the gas flow rate, and the working state monitoring system is used for monitoring and controlling the working state of the device.
The electrode fixing piece consists of an outer sleeve, an inner sleeve and a connecting structure, wherein the outer sleeve and the inner sleeve are coaxial, the outer sleeve is sleeved outside the inner sleeve, and the outer sleeve and the inner sleeve are assembled through the connecting structure; the outer surface of the inner sleeve and the inner surface of the outer sleeve are respectively provided with a groove or other structures for assembling electrodes, the inner electrode is assembled on the outer surface of the inner sleeve in an embedding or other mode, and the outer electrode is assembled on the inner surface of the outer sleeve of the electrode fixing piece in an embedding or other mode.
The outer sleeve of the electrode fixing piece, the actuating pipeline of the flexible actuating system and the outer sheath are respectively provided with an outer sleeve through hole, an actuating pipeline through hole and an outer sheath through hole which are matched in spatial position and size, and the discharging working environment on the inner side of the outer sheath is communicated with the external environment through the through holes, so that low-temperature plasma can enter the external environment along with air flow.
The electrode fixing piece is characterized in that an inner sleeve of the electrode fixing piece is provided with an inner sleeve working gas outlet so that working gas provided by a gas conveying system can enter an inner cavity of the electrode fixing piece, the inner sleeve working gas outlet and outer sleeve through holes are distributed in a staggered mode, and the working gas provided by the gas conveying system is sprayed to the position without the outer sleeve through holes in the inner wall of an outer sleeve so as to improve the plasma excitation efficiency of the low-temperature plasma generation module to the working gas.
The gas delivery system comprises a gas pump and a gas delivery pipeline, and the gas delivery system delivers working gas to the inner cavity of the inner sleeve; the gas delivery system may use a variety of working gases including gas phase hydrogen peroxide, pure helium or other noble gases, heliox or other mixed gases.
The working state monitoring system comprises a data processing unit, a small-sized display, an actuator, a gas flow controller, a temperature sensor, a current sensor, a circuit breaker and a micro camera. The data processing unit, the small display, the actuator and the gas flow controller are arranged at the near end of the device, the data processing unit and the small display process and display monitoring information, the actuator controls the actuating tendon, and the gas flow controller is connected between the gas pump and the gas transmission pipeline of the gas transmission system and controls the flow of working gas through the data processing unit; the temperature sensor is arranged in the electrode fixing piece cavity and used for monitoring the working temperature; the current sensor and the circuit breaker are used for connecting the data processing unit with the power supply module and controlling the power supply module, and when working parameters such as temperature, current and the like exceed a threshold value, the data processing unit controls the circuit switch to disconnect the power supply of the plasma generating device; the miniature camera is positioned at the far end of the device and used for providing space image information for the movement and bending of the device and transmitting the space image information to the data processing unit and the small display.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages: 1. the flexible low-temperature plasma sterilization device adopts a slender flexible tubular design and can be used for sterilization operation in the environments of long and narrow pipelines and other slits. 2. The flexible low-temperature plasma sterilization device integrates a flexible actuating system, can further meet the operation requirements of long and narrow bent pipelines and other complex slit environments, and has good adaptability and operability. 3. The flexible low-temperature plasma sterilization device can directly generate low-temperature plasma in the long and narrow pipeline or other complex slit environments, and has a good sterilization effect.
Drawings
FIG. 1 is a block diagram of the present invention.
Fig. 2 is a schematic structural diagram of a low-temperature plasma generation module according to an embodiment of the invention.
Fig. 3 is a schematic structural diagram of a flexible actuation system according to an embodiment of the present invention.
FIG. 4 is a schematic view of the assembly of a low temperature plasma generation module and a flexible actuation system according to an embodiment of the present invention, wherein
(a) Is an assembly space structure diagram;
(b) to assemble a distal end elevation;
(c) is a sectional view of the assembling axis.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments thereof:
in one embodiment, as shown in fig. 1, the flexible low-temperature plasma sterilization apparatus includes a flexible actuating system 100, a low-temperature plasma generation module 200, a power supply module 300, a sensing control module 400, and a working environment 500.
The flexible actuation system 100 effects the bending movement of the device by bending it actuates a plurality of actuation tendons distributed axially within the conduit wall.
The low-temperature plasma generation module 200 is excited to generate low-temperature plasma by the high-voltage excitation provided by the power supply module 300.
The power supply module 300 provides high voltage electricity to the low temperature plasma generation module 200 to excite it to generate low temperature plasma.
The sensing control module 400 is comprised of an operating condition monitoring system 410 and a gas delivery system 420.
The operation state monitoring system 410 is connected by a sensor subsystem 410a integrated in the flexible actuating pipe and a control display subsystem 410b integrated at the proximal end of the device through data lines.
The sensor subsystem 410a includes a temperature sensor, a current sensor, a circuit breaker and a micro camera, and the working state monitoring system 410 collects the working state information of the device through the sensor subsystem 410 a.
The control display subsystem 410b comprises a data processing unit, a small-sized display, an actuator and a gas flow controller, the working state monitoring system 410 controls and displays the running state of the device through the control display subsystem 410b, and the actuator controls the flexible actuating system 100 to trigger the actuating bending of the device under the guidance of an image transmitted by the miniature camera; the power supply module 300 is controlled based on a temperature sensor, a current sensor and a circuit breaker, and the gas delivery system 420 is controlled through a gas flow controller, so as to control the working state of the low-temperature plasma generation module 200; the related data of the sensor, the control and the like are transmitted to the data processing unit for data processing, control realization and display on the small-sized display.
The gas delivery system 420 includes a gas delivery conduit 420a integrated inside the plasma generation module 200 and a gas pump 420b integrated at the proximal end of the device.
The gas delivery pipe 420a of the gas delivery system 420 extends axially in the center of the interior of the plasma generation module 200, and has uniformly distributed small holes in the wall thereof for releasing the working gas into the interior of the plasma generation module 200.
The gas pump 420b of the gas delivery system 420 implements gas flow rate control through a gas flow controller and a data processing unit, and switching of different working gases when a plurality of working gases are used.
The low-temperature plasma generating module 200 generates low-temperature plasma by the working gas delivered by the high-voltage electrically-excited gas delivery system 420 provided by the power supply module 300, and the low-temperature plasma is diffused into the working environment 500 through the flexible actuating system 100, so that the sterilization of long and narrow pipelines and other complex slit environments is realized.
The structural features of the low temperature plasma generation module 200 are described below in conjunction with fig. 2.
As shown in fig. 2, the low temperature plasma generation module 200 is composed of an outer sleeve 210, an outer electrode groove 211, a strong current groove 212, an outer sleeve through hole 213, an inner sleeve 220, an inner electrode groove 221, a weak current groove 222, an inner sleeve working gas outlet 223, a connection structure 230, an outer electrode 240, and an inner electrode 250.
The inner electrode 250 and the outer electrode 240 are 1-10 annular electrodes coaxially mounted, and the inner electrode 250 is coated with an insulating medium layer.
A discharge area is formed between the outer electrode 240 and the inner electrode 250, and when the outer electrode 240 and the inner electrode 250 are in an operating state, the working gas released by the gas delivery system 420 is excited in the discharge area to form low-temperature plasma.
The outer sleeve 210 has outer electrode slots 211 regularly distributed on the inner surface for receiving the outer electrodes 240.
The outer electrode tub 211 is disposed to surround the inner electrode tub 221, and the outer electrode 240 is also disposed to surround the inner electrode 250.
The outer sleeve 210 and the inner sleeve 220 are connected and supported by a connecting structure 230, and the three form an electrode fixing member.
The outer sleeve 210 and the inner sleeve 220 are each made of a flexible material having good corrosion resistance and electrical insulation properties.
A power line slot 212 is provided within the outer sleeve 210 for receiving and securing a device power line.
A weak current wire slot 222 is provided inside the inner sleeve 220 for receiving and securing the device control data wire.
The inner sleeve 220 internal cavity houses a gas delivery conduit 420a and a sensor subsystem 410 a.
An inner sleeve working gas outlet 223 extends through the inner sleeve 220 for release of working gas released by the gas delivery duct 420a to the discharge region.
The outer sleeve through hole 213 penetrates the outer sleeve 210 for diffusion of the intra-cavity low-temperature plasma to the outside of the low-temperature plasma generation module 200.
The inner casing working gas outlets 223 and the outer casing through holes 213 are arranged in a staggered manner, and the working gas provided by the gas delivery system 420 is injected to a position in the inner wall of the outer casing 210 where there is no outer casing through hole, so as to improve the plasma excitation efficiency of the low-temperature plasma generation module 200 on the working gas.
The structural features of the flexible actuation system 100 are described below in conjunction with FIG. 3.
As shown in fig. 3, flexible actuation system 100 is comprised of outer sheath 110, guide wheel 120, actuation conduit 130, actuation tendons 131.
The outer sheath 110 is made of a flexible material with good wear resistance properties for protecting the overall structural integrity.
Each actuating tendon 131 can be actuated to bend the actuating conduit 130, thereby changing the device movement direction.
The actuation conduit through hole 132 and the outer sheath through hole 140 are the same size and consistent position as the outer sleeve through hole 213 of the low temperature plasma generation module 200 housed within the flexible actuation system 100, enabling the diffusion of plasma out of the flexible actuation system 100.
The overall assembly features of the flexible actuator system 100 and the low temperature plasma generation module 200 are further described below in conjunction with fig. 4.
As shown in fig. 4(a), the low-temperature plasma generation module 200 is integrally installed and fixed inside the flexible actuator system 100.
The sensor subsystem 410a is assembled inside the inner sleeve 220 of the low temperature plasma generation module 200, and collects device operating state information.
The gas transmission pipeline 420a is assembled inside the inner sleeve 220 of the low-temperature plasma generation module 200, so as to transmit the working gas.
As shown in fig. 4(b), which is a distal end elevation view of the device, further illustrates the axial structural relationship of the low temperature plasma module 200 and the flexible actuation system 100 in the device.
As shown in fig. 4(c), the axial section of the device further illustrates the assembly and positional relationship of the inner electrode 240 and the outer electrode 250, the communication relationship among the outer sheath through hole 140, the actuation conduit through hole 132, the outer sleeve through hole 213, and the staggered positional relationship between the above communication structure and the inner sleeve working gas outlet 223.
The structure of the sterilization apparatus according to the above-mentioned embodiment of the present invention is described above, and the sterilization process of the apparatus is further described below in the form of specific embodiment.
1. The device enters a working environment: the device is controlled into a narrow elongated working environment by means of the elongated flexible structural and actuation characteristics of the device.
2. Introducing working gas: the gas delivery system feeds heliox or other working gas into the working environment.
3. And (3) sterilizing the working environment: working gas between the inner electrode and the outer electrode in the low-temperature plasma generation module generates low-temperature plasma under the high-voltage excitation action provided by the power supply module, so that the working environment is sterilized.
Claims (6)
1. A flexible low-temperature plasma sterilization device comprises a flexible actuating system, a low-temperature plasma generating module, a power supply module and a sensing control module, and is characterized in that the power supply module and the sensing control module are connected with the low-temperature plasma generating module, and the low-temperature plasma generating module is assembled in the flexible actuating system;
the flexible actuating system comprises an outer sheath, a guide wheel, an actuating pipeline and actuating tendons, wherein the outer sheath is assembled outside the actuating pipeline and used for protecting the whole integrity of the structure, the guide wheel is installed outside the outer sheath and used for moving, supporting, positioning and assisting steering of the device, the actuating pipeline is made of flexible materials, the low-temperature plasma generating module is coupled inside the actuating pipeline, a plurality of actuating tendons are distributed on the inner surface of the actuating pipeline along the axial direction and fixed with the actuating pipeline, and each actuating tendon can be actuated to bend the actuating pipeline so as to change the moving direction of the device;
the low-temperature plasma generating module is formed by arranging 1 or more electrode units in the axial direction, each electrode unit comprises an inner electrode, an outer electrode, an insulating medium layer and an electrode fixing piece, the insulating medium layer is coated on the outer layer of each inner electrode or each outer electrode, the inner electrodes and the outer electrodes are all annular electrodes which are coaxially arranged, the outer electrodes are sleeved outside the inner electrodes and fixed by the electrode fixing pieces, and when the electrode units are in a working state, working gas in an inner cavity of the electrode fixing pieces is excited to generate low-temperature plasma;
the power supply module comprises a high-voltage power supply and a power supply line, the high-voltage power supply is arranged at the near end of the device, and the power supply line provides excitation for the low-temperature plasma generated by the low-temperature plasma generation module;
the sensing control module comprises a gas conveying system and a working state monitoring system, wherein the gas conveying system provides a working gas environment for the low-temperature plasma generation module and controls the gas flow rate, and the working state monitoring system is used for monitoring and controlling the working state of the device.
2. The flexible low-temperature plasma sterilization device according to claim 1, wherein: the electrode fixing piece consists of an outer sleeve, an inner sleeve and a connecting structure, wherein the outer sleeve and the inner sleeve are coaxial, the outer sleeve is sleeved outside the inner sleeve, and the outer sleeve and the inner sleeve are assembled through the connecting structure; the outer surface of the inner sleeve and the inner surface of the outer sleeve are respectively provided with a groove or other structures for assembling electrodes, the inner electrode is assembled on the outer surface of the inner sleeve in an embedding or other mode, and the outer electrode is assembled on the inner surface of the outer sleeve of the electrode fixing piece in an embedding or other mode.
3. The flexible low-temperature plasma sterilization device according to claim 1, wherein: the outer sleeve of the electrode fixing piece, the actuating pipeline of the flexible actuating system and the outer sheath are respectively provided with an outer sleeve through hole, an actuating pipeline through hole and an outer sheath through hole which are matched in spatial position and size, and the discharging working environment on the inner side of the outer sheath is communicated with the external environment through the through holes, so that low-temperature plasma can enter the external environment along with air flow.
4. The flexible low-temperature plasma sterilization device according to claim 1, wherein: the electrode fixing piece is characterized in that an inner sleeve of the electrode fixing piece is provided with an inner sleeve working gas outlet so that working gas provided by a gas conveying system can enter an inner cavity of the electrode fixing piece, the inner sleeve working gas outlet and outer sleeve through holes are distributed in a staggered mode, and the working gas provided by the gas conveying system is sprayed to the position without the outer sleeve through holes in the inner wall of an outer sleeve so as to improve the plasma excitation efficiency of the low-temperature plasma generation module to the working gas.
5. The flexible low-temperature plasma sterilization device according to claim 1, wherein: the gas delivery system comprises a gas pump and a gas delivery pipeline, and the gas delivery system delivers working gas to the inner cavity of the inner sleeve; the gas delivery system may use a variety of working gases including gas phase hydrogen peroxide, pure helium or other noble gases, heliox or other mixed gases.
6. The flexible low-temperature plasma sterilization device according to claim 1, wherein: the working state monitoring system comprises a data processing unit, a small-sized display, an actuator, a gas flow controller, a temperature sensor, a current sensor, a circuit breaker and a micro camera. The data processing unit, the small display, the actuator and the gas flow controller are arranged at the near end of the device, the data processing unit and the small display process and display monitoring information, the actuator controls the actuating tendon, and the gas flow controller is connected between the gas pump and the gas transmission pipeline of the gas transmission system and controls the flow of working gas through the data processing unit; the temperature sensor is arranged in the electrode fixing piece cavity and used for monitoring the working temperature; the current sensor and the circuit breaker are used for connecting the data processing unit with the power supply module and controlling the power supply module, and when working parameters such as temperature, current and the like exceed a threshold value, the data processing unit controls the circuit switch to disconnect the power supply of the plasma generating device; the miniature camera is positioned at the far end of the device and used for providing space image information for the movement and bending of the device and transmitting the space image information to the data processing unit and the small display.
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| CN111729106B (en) | 2021-08-13 |
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