CN109556522B - Gas outlet radial length detection platform - Google Patents
Gas outlet radial length detection platform Download PDFInfo
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- CN109556522B CN109556522B CN201811458452.9A CN201811458452A CN109556522B CN 109556522 B CN109556522 B CN 109556522B CN 201811458452 A CN201811458452 A CN 201811458452A CN 109556522 B CN109556522 B CN 109556522B
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- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 239000000919 ceramic Substances 0.000 claims abstract description 29
- 238000010411 cooking Methods 0.000 claims abstract description 19
- 239000013078 crystal Substances 0.000 claims abstract description 12
- 230000001681 protective effect Effects 0.000 claims abstract description 7
- 230000003116 impacting effect Effects 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 81
- 238000012545 processing Methods 0.000 claims description 79
- 238000001914 filtration Methods 0.000 claims description 60
- 230000008859 change Effects 0.000 claims description 28
- 239000002737 fuel gas Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 238000003384 imaging method Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 241000257303 Hymenoptera Species 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 235000014347 soups Nutrition 0.000 description 2
- 235000013547 stew Nutrition 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/022—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of tv-camera scanning
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to a gas outlet radial length detection platform, which comprises: the ignition device is arranged in the ceramic cooking bench and comprises a gas outlet, insulating ceramics, a piezoelectric crystal, an impact structure and a high-voltage lead; the stove equipment is arranged in the ceramic cooking bench and comprises a fire cover, a stove head, a protective cover and a waterproof cover, wherein the fire cover is arranged above the stove head, the impact structure is used for impacting a piezoelectric crystal, one end of a high-voltage wire is connected with insulating ceramic, the other end of the high-voltage wire is connected with the piezoelectric crystal, the insulating ceramic is also connected with an ignition needle, and the ignition needle is arranged above a gas outlet and used for igniting gas emitted from the gas outlet; and the length analysis equipment is used for sending a gas outlet replacement signal when the received maximum radial length exceeds a preset length threshold value, and otherwise, sending a gas outlet maintaining signal. By the aid of the ceramic cooking bench, the problem that the ceramic cooking bench cannot be ignited due to too much gas flow caused by too wide gas outlet can be avoided.
Description
Technical Field
The invention relates to the field of ceramic cooktops, in particular to a gas outlet radial length detection platform.
Background
The larger the heat flow value designed on the ceramic cooking bench is, the stronger the heating capacity is, but the larger the firepower is, the better the firepower is. In fact, the heat flow rate should be adapted to the cooking mode and the cooking bench, and if a large heat flow rate is pursued, the heat efficiency of the cooking bench is greatly reduced, and the waste smoke discharge amount is increased. Therefore, the larger the fire is, the better the fire is when cooking. The ceramic cooking bench transfers heat to the pot bottom by flame convection, but the contact time of the flame and the pot bottom is short, if the fire is too large, a large amount of heat is lost without utilization, and thus nearly half of the fuel gas is possibly wasted.
The size of the fire should be determined according to the size of the pot, and the area of the flame distribution is the best to be equal to the bottom of the pot, so that the heat can be transferred most effectively. When the soup or the stew is cooked, the soup or the stew can be boiled by big fire and then boiled by small fire, and the pot can be kept to be boiled without overflowing.
Disclosure of Invention
In order to solve the technical problem that in the prior art, the gas outlet of the ceramic cooking bench is too wide, the gas flow is too much, and the gas flow cannot be ignited, the invention provides a gas outlet radial length detection platform.
The invention has at least the following two important points:
(1) the region where the object with the edge change intensity exceeding the limited amount is taken as a change dense region, and the processing of each change dense region is more emphasized in the image processing so as to balance the operation efficiency and the operation resource consumption;
(2) the radial length of the gas outlet is detected to send out a replacement request when the radial length exceeds the standard, so that the phenomenon that the gas outlet is too wide, the gas flow is too much, and the gas flow cannot be ignited is avoided.
According to an aspect of the present invention, there is provided a gas outlet radial length detection platform, the platform comprising:
the ignition device is arranged in the ceramic cooking bench and comprises a gas outlet, insulating ceramics, a piezoelectric crystal, an impact structure and a high-voltage lead; the stove equipment is arranged in the ceramic cooking bench and comprises a fire cover, a stove head, a protective cover and a waterproof cover, wherein the fire cover is arranged above the stove head; in the ignition device, the impact structure is used for impacting the piezoelectric crystal, one end of the high-voltage lead is connected with the insulating ceramic, the other end of the high-voltage lead is connected with the piezoelectric crystal, in the ignition device, the insulating ceramic is also connected with an ignition needle, and the ignition needle is arranged above the gas outlet and used for igniting gas emitted from the gas outlet; the data capturing device is arranged obliquely above the fuel gas outlet and faces the fuel gas outlet, and comprises a fireproof protective shell, an annular container, a photographing component, a connecting fastener, a noise analysis component and a filtering execution component; the fire-proof protection device comprises an annular container, a photographic component, a noise analysis component and a filtering execution component, wherein the annular container, the photographic component, the noise analysis component and the filtering execution component are all located inside a fire-proof protection shell, the photographic component is arranged at the outward end of the fire-proof protection shell, a connecting fastener is arranged at the inward end of the fire-proof protection shell, the photographic component is embedded inside the annular container and used for conducting high-definition image acquisition on a front fuel gas outlet outwards to obtain a front captured image, the noise analysis component is connected with the photographic component and used for outputting the type corresponding to the noise with the maximum amplitude in the front captured image as a representative noise type, and the filtering execution component is connected with the noise analysis component and used for executing corresponding processing of a filtering algorithm corresponding to the representative noise type on the front captured image to obtain a real-time processed image; the filtering execution component outputs a plurality of frames of real-time processing images with continuous time stamps; the filtering execution component comprises an image receiving unit, a filtering processing unit and an image output unit, wherein the filtering processing unit is respectively connected with the image receiving unit and the image output unit; the density analyzing device is used for receiving a plurality of frames of real-time processing images with continuous time stamps, detecting the edge change intensity of each object in each frame of real-time processing image, taking an area where the edge change intensity exceeds a limited amount as a change dense area, and outputting one or more change dense areas in each frame of real-time processing image; the area processing equipment is connected with the density analyzing equipment and is used for receiving the one or more change dense areas and respectively carrying out color level adjustment processing on the one or more change dense areas so as to obtain one or more adjusted areas; the image combination equipment is connected with the area processing equipment and is used for receiving one or more adjusted areas corresponding to each frame of real-time processing image and overlapping the one or more adjusted areas of the plurality of frames of real-time processing images in one frame of image according to the positions of the adjusted areas in the image so as to obtain an overlapped image; the duplication removing processing equipment is connected with the image combination equipment and is used for receiving the overlapped images and removing each overlapped pixel point in the overlapped images so as to obtain and output corresponding duplication removing processed images; a signal filtering device, coupled to the deduplication processing device, for receiving the deduplication processed image, performing multiple gaussian filtering processes on the deduplication processed image, the multiple gaussian filtering processes being inversely proportional to a signal-to-noise ratio of the deduplication processed image, to obtain a corresponding successive filtering image, and outputting the successive filtering image; in the signal filtering apparatus, the multiple gaussian filtering process performed on the deduplicated image a number of times inversely proportional to the signal-to-noise ratio of the deduplicated image includes: the higher the signal-to-noise ratio of the de-duplication processed image is, the fewer the times of executing multiple Gaussian filtering processing is; the radial identification device is connected with the signal filtering device and used for performing gas outlet object identification on the successive filtering images based on gas outlet imaging characteristics so as to identify and segment corresponding gas outlet patterns from the successive filtering images and identify the geometric shapes of the gas outlet patterns so as to determine the maximum radial length of the gas outlet patterns; and the length analysis equipment is connected with the radial recognition equipment and is used for sending a gas outlet replacement signal when the received maximum radial length exceeds a preset length threshold value, and otherwise, sending a gas outlet maintenance signal.
More specifically, in the gas outlet radial length detection platform: the deduplication processing device comprises a data input sub-device and a deduplication processing sub-device, and the data input sub-device is connected with the deduplication processing sub-device.
More specifically, in the gas outlet radial length detection platform: in the deduplication processing apparatus, the data input sub-apparatus is connected to the image combining apparatus, and is configured to receive the overlapped image.
More specifically, in the gas outlet radial length detection platform: in the deduplication processing device, the deduplication processing sub-device is configured to remove each overlapping pixel point in the overlapped image, so as to obtain and output a corresponding deduplication processing image.
More specifically, in the gas outlet radial length detection platform: the density analyzing device comprises an object extracting sub-device which is used for receiving each frame of real-time processing image and identifying each object in each frame of real-time processing image.
More specifically, in the gas outlet radial length detection platform: the density analyzing device comprises a severity analyzing sub-device which is connected with the object extracting sub-device and used for analyzing the severity of edge change of each object in each frame of real-time processing image.
More specifically, in the gas outlet radial length testing platform, still include:
and the ZIGBEE communication interface is connected with the length analysis equipment and used for forwarding the gas outlet replacing signal or the gas outlet maintaining signal through a ZIGBEE communication link.
Detailed Description
The following will describe in detail an embodiment of the gas outlet radial length detection platform of the present invention.
Because the electronic ignition is the starting action of a loop formed by piezoelectric ceramics and metal, food which is burned at ordinary times is not suitable to drip on the cooking bench, and the electrode part is kept clean. The condition of blocking the burner needs to be cleaned in time. When the ignition is difficult, whether the distance between the electrode and the stove body is overlarge or not, whether the ignition hole is smooth or not, whether the piezoelectric ceramic fails or not (the fire is weak) or not, and the like are checked.
In order to overcome the defects, the invention builds a gas outlet radial length detection platform, and can effectively solve the corresponding technical problem.
The gas outlet radial length detection platform shown according to the embodiment of the invention comprises:
the ignition device is arranged in the ceramic cooking bench and comprises a gas outlet, insulating ceramics, a piezoelectric crystal, an impact structure and a high-voltage lead;
the stove equipment is arranged in the ceramic cooking bench and comprises a fire cover, a stove head, a protective cover and a waterproof cover, wherein the fire cover is arranged above the stove head;
in the ignition device, the impact structure is used for impacting the piezoelectric crystal, one end of the high-voltage lead is connected with the insulating ceramic, the other end of the high-voltage lead is connected with the piezoelectric crystal, in the ignition device, the insulating ceramic is also connected with an ignition needle, and the ignition needle is arranged above the gas outlet and used for igniting gas emitted from the gas outlet;
the data capturing device is arranged obliquely above the fuel gas outlet and faces the fuel gas outlet, and comprises a fireproof protective shell, an annular container, a photographing component, a connecting fastener, a noise analysis component and a filtering execution component; the fire-proof protection device comprises an annular container, a photographic component, a noise analysis component and a filtering execution component, wherein the annular container, the photographic component, the noise analysis component and the filtering execution component are all located inside a fire-proof protection shell, the photographic component is arranged at the outward end of the fire-proof protection shell, a connecting fastener is arranged at the inward end of the fire-proof protection shell, the photographic component is embedded inside the annular container and used for conducting high-definition image acquisition on a front fuel gas outlet outwards to obtain a front captured image, the noise analysis component is connected with the photographic component and used for outputting the type corresponding to the noise with the maximum amplitude in the front captured image as a representative noise type, and the filtering execution component is connected with the noise analysis component and used for executing corresponding processing of a filtering algorithm corresponding to the representative noise type on the front captured image to obtain a real-time processed image; the filtering execution component outputs a plurality of frames of real-time processing images with continuous time stamps;
the filtering execution component comprises an image receiving unit, a filtering processing unit and an image output unit, wherein the filtering processing unit is respectively connected with the image receiving unit and the image output unit;
the density analyzing device is used for receiving a plurality of frames of real-time processing images with continuous time stamps, detecting the edge change intensity of each object in each frame of real-time processing image, taking an area where the edge change intensity exceeds a limited amount as a change dense area, and outputting one or more change dense areas in each frame of real-time processing image;
the area processing equipment is connected with the density analyzing equipment and is used for receiving the one or more change dense areas and respectively carrying out color level adjustment processing on the one or more change dense areas so as to obtain one or more adjusted areas;
the image combination equipment is connected with the area processing equipment and is used for receiving one or more adjusted areas corresponding to each frame of real-time processing image and overlapping the one or more adjusted areas of the plurality of frames of real-time processing images in one frame of image according to the positions of the adjusted areas in the image so as to obtain an overlapped image;
the duplication removing processing equipment is connected with the image combination equipment and is used for receiving the overlapped images and removing each overlapped pixel point in the overlapped images so as to obtain and output corresponding duplication removing processed images;
a signal filtering device, coupled to the deduplication processing device, for receiving the deduplication processed image, performing multiple gaussian filtering processes on the deduplication processed image, the multiple gaussian filtering processes being inversely proportional to a signal-to-noise ratio of the deduplication processed image, to obtain a corresponding successive filtering image, and outputting the successive filtering image;
in the signal filtering apparatus, the multiple gaussian filtering process performed on the deduplicated image a number of times inversely proportional to the signal-to-noise ratio of the deduplicated image includes: the higher the signal-to-noise ratio of the de-duplication processed image is, the fewer the times of executing multiple Gaussian filtering processing is;
the radial identification device is connected with the signal filtering device and used for performing gas outlet object identification on the successive filtering images based on gas outlet imaging characteristics so as to identify and segment corresponding gas outlet patterns from the successive filtering images and identify the geometric shapes of the gas outlet patterns so as to determine the maximum radial length of the gas outlet patterns;
and the length analysis equipment is connected with the radial recognition equipment and is used for sending a gas outlet replacement signal when the received maximum radial length exceeds a preset length threshold value, and otherwise, sending a gas outlet maintenance signal.
Next, a detailed structure of the gas outlet radial length detection platform of the present invention will be further described.
In the gas outlet radial length detection platform: the deduplication processing device comprises a data input sub-device and a deduplication processing sub-device, and the data input sub-device is connected with the deduplication processing sub-device.
In the gas outlet radial length detection platform: in the deduplication processing apparatus, the data input sub-apparatus is connected to the image combining apparatus, and is configured to receive the overlapped image.
In the gas outlet radial length detection platform: in the deduplication processing device, the deduplication processing sub-device is configured to remove each overlapping pixel point in the overlapped image, so as to obtain and output a corresponding deduplication processing image.
In the gas outlet radial length detection platform: the density analyzing device comprises an object extracting sub-device which is used for receiving each frame of real-time processing image and identifying each object in each frame of real-time processing image.
In the gas outlet radial length detection platform: the density analyzing device comprises a severity analyzing sub-device which is connected with the object extracting sub-device and used for analyzing the severity of edge change of each object in each frame of real-time processing image.
In the gas export radial length testing platform, still include:
and the ZIGBEE communication interface is connected with the length analysis equipment and used for forwarding the gas outlet replacing signal or the gas outlet maintaining signal through a ZIGBEE communication link.
In addition, ZIGBEE is a low power consumption lan protocol based on the ieee802.15.4 standard. According to international standards, ZIGBEE technology is a short-range, low-power wireless communication technology. This name (also called the purple bee protocol) is derived from the dance of the eight characters of bees, since bees (bee) communicate the orientation information of pollen with partners by flying and "waving" (ZIG) flapping wings, "i.e. bees form a communication network in the community by this way. Its advantages are short distance, low complexity, self-organization, low power consumption and low data rate. The device is mainly suitable for the fields of automatic control and remote control, and can be embedded into various devices. In short, ZIGBEE is an inexpensive and low-power-consumption short-range wireless networking communication technology. ZIGBEE is a wireless network protocol for low-speed short-range transmission. The ZIGBEE protocol is, from bottom to top, a physical layer (PHY), a media access control layer (MAC), a Transport Layer (TL), a network layer (NWK), an application layer (APL), and the like. Wherein the physical layer and the medium access control layer comply with the provisions of the IEEE802.15.4 standard.
By adopting the gas outlet radial length detection platform, aiming at the technical problem that the gas outlet of the ceramic cooking bench in the prior art is too wide, the gas flow is too much, and the gas flow cannot be ignited, the area where the object with the edge change intensity exceeding the limited quantity is positioned is taken as a change dense area, and the processing of each change dense area is more emphasized in the image processing, so that the balance between the operation efficiency and the operation consumed resources is achieved; more importantly, the radial length of the gas outlet is detected, so that a replacement request is sent out when the radial length exceeds the standard, and the phenomenon that the gas outlet is too wide, the gas flow is too much, and the gas flow cannot be ignited is avoided.
It is to be understood that while the present invention has been described in conjunction with the preferred embodiments thereof, it is not intended to limit the invention to those embodiments. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the invention without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (7)
1. A gas outlet radial length detection platform, the platform comprising:
the ignition device is arranged in the ceramic cooking bench and comprises a gas outlet, insulating ceramics, a piezoelectric crystal, an impact structure and a high-voltage lead;
the stove equipment is arranged in the ceramic cooking bench and comprises a fire cover, a stove head, a protective cover and a waterproof cover, wherein the fire cover is arranged above the stove head;
in the ignition device, the impact structure is used for impacting the piezoelectric crystal, one end of the high-voltage lead is connected with the insulating ceramic, the other end of the high-voltage lead is connected with the piezoelectric crystal, in the ignition device, the insulating ceramic is also connected with an ignition needle, and the ignition needle is arranged above the gas outlet and used for igniting gas emitted from the gas outlet;
the data capturing device is arranged obliquely above the fuel gas outlet and faces the fuel gas outlet, and comprises a fireproof protective shell, an annular container, a photographing component, a connecting fastener, a noise analysis component and a filtering execution component; the fire-proof protection device comprises an annular container, a photographic component, a noise analysis component and a filtering execution component, wherein the annular container, the photographic component, the noise analysis component and the filtering execution component are all located inside a fire-proof protection shell, the photographic component is arranged at the outward end of the fire-proof protection shell, a connecting fastener is arranged at the inward end of the fire-proof protection shell, the photographic component is embedded inside the annular container and used for conducting high-definition image acquisition on a front fuel gas outlet outwards to obtain a front captured image, the noise analysis component is connected with the photographic component and used for outputting the type corresponding to the noise with the maximum amplitude in the front captured image as a representative noise type, and the filtering execution component is connected with the noise analysis component and used for executing corresponding processing of a filtering algorithm corresponding to the representative noise type on the front captured image to obtain a real-time processed image; the filtering execution component outputs a plurality of frames of real-time processing images with continuous time stamps;
the filtering execution component comprises an image receiving unit, a filtering processing unit and an image output unit, wherein the filtering processing unit is respectively connected with the image receiving unit and the image output unit;
the density analyzing device is used for receiving a plurality of frames of real-time processing images with continuous time stamps, detecting the edge change intensity of each object in each frame of real-time processing image, taking an area where the edge change intensity exceeds a limited amount as a change dense area, and outputting one or more change dense areas in each frame of real-time processing image;
the area processing equipment is connected with the density analyzing equipment and is used for receiving the one or more change dense areas and respectively carrying out color level adjustment processing on the one or more change dense areas so as to obtain one or more adjusted areas;
the image combination equipment is connected with the area processing equipment and is used for receiving one or more adjusted areas corresponding to each frame of real-time processing image and overlapping the one or more adjusted areas of the plurality of frames of real-time processing images in one frame of image according to the positions of the adjusted areas in the image so as to obtain an overlapped image;
the duplication removing processing equipment is connected with the image combination equipment and is used for receiving the overlapped images and removing each overlapped pixel point in the overlapped images so as to obtain and output corresponding duplication removing processed images;
a signal filtering device, coupled to the deduplication processing device, for receiving the deduplication processed image, performing multiple gaussian filtering processes on the deduplication processed image, the multiple gaussian filtering processes being inversely proportional to a signal-to-noise ratio of the deduplication processed image, to obtain a corresponding successive filtering image, and outputting the successive filtering image;
in the signal filtering apparatus, the multiple gaussian filtering process performed on the deduplicated image a number of times inversely proportional to the signal-to-noise ratio of the deduplicated image includes: the higher the signal-to-noise ratio of the de-duplication processed image is, the fewer the times of executing multiple Gaussian filtering processing is;
the radial identification device is connected with the signal filtering device and used for performing gas outlet object identification on the successive filtering images based on gas outlet imaging characteristics so as to identify and segment corresponding gas outlet patterns from the successive filtering images and identify the geometric shapes of the gas outlet patterns so as to determine the maximum radial length of the gas outlet patterns;
and the length analysis equipment is connected with the radial recognition equipment and is used for sending a gas outlet replacement signal when the received maximum radial length exceeds a preset length threshold value, and otherwise, sending a gas outlet maintenance signal.
2. The gas outlet radial length detection platform of claim 1, wherein:
the deduplication processing device comprises a data input sub-device and a deduplication processing sub-device, and the data input sub-device is connected with the deduplication processing sub-device.
3. The gas outlet radial length detection platform of claim 2, wherein:
in the deduplication processing apparatus, the data input sub-apparatus is connected to the image combining apparatus, and is configured to receive the overlapped image.
4. The gas outlet radial length detection platform of claim 3, wherein:
in the deduplication processing device, the deduplication processing sub-device is configured to remove each overlapping pixel point in the overlapped image, so as to obtain and output a corresponding deduplication processing image.
5. The gas outlet radial length detection platform of claim 4, wherein:
the density analyzing device comprises an object extracting sub-device which is used for receiving each frame of real-time processing image and identifying each object in each frame of real-time processing image.
6. The gas outlet radial length detection platform of claim 5, wherein:
the density analyzing device comprises a severity analyzing sub-device which is connected with the object extracting sub-device and used for analyzing the severity of edge change of each object in each frame of real-time processing image.
7. The gas outlet radial length detection platform of any one of claims 1-6, further comprising:
and the ZIGBEE communication interface is connected with the length analysis equipment and used for forwarding the gas outlet replacing signal or the gas outlet maintaining signal through a ZIGBEE communication link.
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| CN201811458452.9A CN109556522B (en) | 2018-11-30 | 2018-11-30 | Gas outlet radial length detection platform |
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| CN201811458452.9A CN109556522B (en) | 2018-11-30 | 2018-11-30 | Gas outlet radial length detection platform |
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| JP3302863B2 (en) * | 1995-08-30 | 2002-07-15 | 大日本スクリーン製造株式会社 | Inspection method and inspection device for perforated plate |
| CN201787620U (en) * | 2010-04-27 | 2011-04-06 | 刘镇华 | An infrared heating plate combustion stove |
| CN102930537A (en) * | 2012-10-23 | 2013-02-13 | 深圳市宜搜科技发展有限公司 | Image detection method and system |
| CN203642244U (en) * | 2013-10-12 | 2014-06-11 | 安徽人和节能科技有限责任公司 | Multifunctional commercial gas furnace |
| CN106975560B (en) * | 2017-04-13 | 2019-03-22 | 宁波市诚邦办公设备有限公司 | The shredder of view-based access control model detection |
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Effective date of registration: 20240816 Address after: No. 76 West Zhifa Street, Yingkou District, Yingkou City, Liaoning Province, 115000 Patentee after: Yingkou Huayi Gas Equipment Co.,Ltd. Country or region after: China Address before: 421200 basket group, Da'an Township, Hengyang County, Hengyang City, Hunan Province Patentee before: Yan Jie Country or region before: China |
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