CN218037320U - Background suppression photoelectric sensor based on wireless transmission - Google Patents

Background suppression photoelectric sensor based on wireless transmission Download PDF

Info

Publication number
CN218037320U
CN218037320U CN202221279898.7U CN202221279898U CN218037320U CN 218037320 U CN218037320 U CN 218037320U CN 202221279898 U CN202221279898 U CN 202221279898U CN 218037320 U CN218037320 U CN 218037320U
Authority
CN
China
Prior art keywords
photoelectric sensor
rod
fixedly connected
front side
background suppression
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202221279898.7U
Other languages
Chinese (zh)
Inventor
唐可信
叶立平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Akusense Technology Co Ltd
Original Assignee
Shenzhen Akusense Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Akusense Technology Co Ltd filed Critical Shenzhen Akusense Technology Co Ltd
Priority to CN202221279898.7U priority Critical patent/CN218037320U/en
Application granted granted Critical
Publication of CN218037320U publication Critical patent/CN218037320U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Eyeglasses (AREA)

Abstract

The utility model discloses a background restraines photoelectric sensor based on wireless transmission, restrain the photoelectric sensor body including the background, the front side that the background restraines the photoelectric sensor body is inlayed and is equipped with the plane lens, and this internal ranging module and the wireless transmission module of installing of background restraines photoelectric sensor, and ranging module is located the rear side of plane lens and cooperatees with the level crossing piece, the bottom fixedly connected with top that the background restraines the photoelectric sensor body is the mounting box that the opening set up. The utility model discloses be convenient for two automatic drive before the use clean the cotton to keeping away from each other or the direction that is close to each other removes and cleans the clearance to the front side of plane lens, reduce because of the front side of plane lens is stained with the phenomenon that attaches the dust influence and detect, and compression spring's setting for clean the in-process, clean cotton rear side can all the time with the front side in close contact with of plane lens, improve and clean stability, satisfy the user demand.

Description

Background suppression photoelectric sensor based on wireless transmission
Technical Field
The utility model relates to a background restraines photoelectric sensor technical field, especially relates to a background restraines photoelectric sensor based on wireless transmission.
Background
The principle of photoelectric sensor is when a bundle of parallel incident light shines rough surface, the surface can be to light reflection all around, so the incident line is though parallel to each other, because the normal direction of each point is inconsistent, cause the reflection light to want different directions to reflect irregularly, diffuse reflection is called to this kind of reflection, photoelectric sensor who uses on the market is mostly diffuse reflection photoelectric sensor, current diffuse reflection photoelectric sensor, when it meets different colour object reverberation's ability different, just probably caused the detection distance of different colour objects different, so there is colour object in the detection distance scope and can not detect, will form the blind area, simultaneously because some trade machines work the region is limited, peripheral someone is the process can produce the interference from time to time, form the malfunction, in order to solve this problem, application number: 201921151165.3 discloses a background suppression photoelectric sensor based on a TOF detection module, which comprises a protection casing, a PCB circuit board set and a distance measurement module, wherein the protection casing comprises a shell, a board support and a rear cover, the board support is fixedly installed inside the shell, the rear cover is fixedly welded on the upper end surface of the shell, a planar lens is welded on the front end surface of the shell, the planar lens is arranged to serve as a window of a product to protect an optical lens part from being damaged, so that the optical lens can be normally used for light transmission, and the problem that a blind area is easily formed due to the fact that an existing photoelectric sensor cannot perform distinguishing detection aiming at the characteristics of different light reflection capacities of different color objects is solved.
Through background suppression photoelectric sensor's setting in the above-mentioned patent, can realize distinguishing the detection to the characteristics that different colour object reverberation ability is different, and in order to realize wireless transmission, most can install wireless transmission module in background suppression photoelectric sensor and realize wireless signal's transmission, and can realize the protection to optical lens through the plane lens in the above-mentioned patent, but it is before using, be not convenient for automatically clean the clearance to the dust of plane lens front side, long-time the use, be stained with the dust easily before the plane lens, and then influence the detection effect, inconvenient personnel use, improve to the problem that above-mentioned patent exists, consequently, we have provided a background suppression photoelectric sensor based on wireless transmission is used for solving above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the background based on wireless transmission who proposes restraines photoelectric sensor.
In order to realize the purpose, the utility model adopts the following technical scheme:
a background suppression photoelectric sensor based on wireless transmission comprises a background suppression photoelectric sensor body, wherein a plane lens is embedded in the front side of the background suppression photoelectric sensor body, a distance measurement module and a wireless transmission module are installed in the background suppression photoelectric sensor body, the distance measurement module is positioned on the rear side of the plane lens and matched with the plane lens, the bottom of the background suppression photoelectric sensor body is fixedly connected with a mounting box with an opening at the top, a guide rod is fixedly connected between the inner walls of the two sides of the mounting box, two moving blocks are slidably sleeved on the guide rod, two brush rods are arranged on the front side of the background suppression photoelectric sensor body, the bottom ends of the brush rods extend into the mounting box and are fixedly connected with the tops of the corresponding moving blocks, a linkage driving mechanism is fixedly connected between the mutually adjacent sides of the two moving blocks, and the guide rod is rotatably sleeved on the linkage driving mechanism, one side of each of the two moving blocks, which is close to each other, is provided with a dodging hole, the dodging holes are matched with the linkage driving mechanism, the bottom of the moving block positioned on the left side is fixedly connected with an L-shaped rod, the inner wall of the left side of the mounting box is fixedly connected with an electric telescopic rod, the right end of an output shaft of the electric telescopic rod is fixedly connected with the inner wall of the right side of the L-shaped rod, the inner wall of the bottom of the mounting box is fixedly connected with a light-touch forward starting switch and a light-touch reverse starting switch, the L-shaped rod is positioned between the light-touch forward starting switch and the light-touch reverse starting switch and is matched with the light-touch forward starting switch and the light-touch reverse starting switch, the front side of the electric telescopic rod is fixedly and electrically connected with a controller, the controller is electrically connected with the light-touch forward starting switch and the light-touch reverse starting switch, the rear side of the brush rod is provided with a rectangular groove, and an elastic extrusion mechanism is sleeved in the rectangular groove in a sliding manner, the rear side of the elastic extrusion mechanism is fixedly bonded with a wiping cotton, and the rear side of the wiping cotton is flush with the front side of the plane lens.
Preferably, the linkage driving mechanism comprises two moving rods, the two moving rods are respectively located above and below the guide rod, the moving rods are matched with the corresponding avoidance holes, one ends, far away from each other, of the two moving rods are respectively fixedly connected with one sides, close to the two moving blocks, of the two moving rods, racks are embedded on one sides, close to the guide rod, of the moving rods, first through holes are formed in the top of the guide rod, gears are rotatably installed between the front side inner wall and the rear side inner wall of the first through holes, the top and the bottom of each gear respectively extend to the upper portion and the lower portion of the guide rod, and the gears are located between the two racks and are meshed with the two racks.
Preferably, the elastic extrusion mechanism comprises an extrusion rod which is slidably sleeved in the rectangular groove, the rear side of the extrusion rod is fixedly bonded with the front side of the corresponding wiping cotton, and a plurality of compression springs in a compression state are fixedly connected between the front side of the extrusion rod and the inner wall of the front side of the corresponding rectangular groove.
Preferably, one side of the moving block is provided with a guide hole, and the inner wall of the guide hole is in sliding connection with the outer side of the guide rod.
Preferably, one side of the moving rod, which is close to the guide rod, is provided with an embedded groove, and the inner wall of the embedded groove is fixedly connected with the outer side of the corresponding rack.
Preferably, the rear side of the extrusion rod is fixedly bonded with a male magic tape, the front side of the wiping cotton is fixedly bonded with a female magic tape, and the male magic tape is adhered with the corresponding female magic tape.
Preferably, the top fixedly connected with stopper of the lifter has seted up spacing hole on the top inner wall of rectangular channel, stopper and the spacing hole sliding connection who corresponds.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses be convenient for two of automatic drive clean the cotton to keeping away from each other or the direction that is close to each other removes to the front side of plane lens and cleans the clearance before using, reduce because of the front side of plane lens is stained with the phenomenon that attaches the dust influence and detect, and compression spring's setting for cleaning the in-process, clean cotton rear side can all the time with the front side in close contact with of plane lens, improve and clean stability, satisfy the user demand.
Drawings
Fig. 1 is a schematic structural diagram of a background suppression photoelectric sensor based on wireless transmission according to the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
fig. 3 is a partial sectional structural diagram of a right side view of fig. 1.
In the figure: 100. a background-suppressing photosensor body; 101. a planar lens; 102. a distance measurement module; 1. mounting a box; 2. a brush bar; 3. a guide bar; 4. a moving block; 5. a travel bar; 6. avoiding holes; 7. a first perforation; 8. a gear; 9. a rack; 10. an L-shaped rod; 11. an electric telescopic rod; 12. lightly touching a positive starting switch; 13. lightly touching a reverse starting switch; 14. a rectangular groove; 15. an extrusion stem; 16. a compression spring; 17. and (5) wiping cotton.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a background suppression photoelectric sensor based on wireless transmission comprises a background suppression photoelectric sensor body 100, a plane lens 101 is embedded on the front side of the background suppression photoelectric sensor body 100, a distance measurement module 102 and a wireless transmission module are installed in the background suppression photoelectric sensor body 100, wherein the wireless transmission module is arranged to realize the effect of wireless transmission, the distance measurement module 102 is located on the rear side of the plane lens 101 and is matched with the plane lens 101, the bottom of the background suppression photoelectric sensor body 100 is fixedly connected with a mounting box 1 with an opening at the top, a guide rod 3 is fixedly connected between the inner walls of the two sides of the mounting box 1, two moving blocks 4 are slidably sleeved on the guide rod 3, wherein one side of each moving block 4 is provided with a guide hole, the inner wall of the guide hole is slidably connected with the outer side of the guide rod 3, the front side of the background suppression photoelectric sensor body 100 is provided with two brush rods 2, the bottom ends of the brush rods 2 extend into the mounting box 1 and are fixedly connected with the tops of corresponding moving blocks 4, wherein the moving blocks 4 are matched with the guide rods 3 to play a role in guiding the brush rods 2, a linkage driving mechanism is fixedly connected between the mutually adjacent sides of the two moving blocks 4, the guide rods 3 are rotatably sleeved on the linkage driving mechanism, the mutually adjacent sides of the two moving blocks 4 are respectively provided with a avoiding hole 6, the avoiding holes 6 are matched with the linkage driving mechanism, the bottom of the moving block 4 on the left side is fixedly connected with an L-shaped rod 10, the inner wall on the left side of the mounting box 1 is fixedly connected with an electric telescopic rod 11, the right end of an output shaft of the electric telescopic rod 11 is fixedly connected with the inner wall on the right side of the L-shaped rod 10, the inner wall on the bottom of the mounting box 1 is fixedly connected with a light touch forward starting switch 12 and a light touch reverse starting switch 13, the L-shaped rod 10 is positioned between the light-touch forward starting switch 12 and the light-touch reverse starting switch 13 and is matched with the light-touch forward starting switch 12 and the light-touch reverse starting switch 13, the front side of the electric telescopic rod 11 is fixedly and electrically connected with a controller, the controller is electrically connected with the light-touch forward starting switch 12 and the light-touch reverse starting switch 13, the controller, the light-touch forward starting switch 12 and the light-touch reverse starting switch 13 are matched with each other to drive the electric telescopic rod 11 to circularly start forwards and reversely, the rear side of the brush rod 2 is provided with a rectangular groove 14, an elastic extrusion mechanism is arranged in the rectangular groove 14 in a sliding sleeve mode, the rear side of the elastic extrusion mechanism is fixedly bonded with a wiping cotton 17, and the rear side of the wiping cotton 17 is flush with the front side of the plane lens 101;
the linkage driving mechanism comprises two moving rods 5, the two moving rods 5 are respectively positioned above and below the guide rod 3, the moving rods 5 are matched with corresponding avoidance holes 6, one ends, far away from each other, of the two moving rods 5 are respectively fixedly connected with one sides, close to each other, of the two moving blocks 4, racks 9 are embedded in one sides, close to the guide rod 3, of the moving rods 5, embedded grooves are formed in one sides, close to the guide rod 3, of the moving rods 5, the inner walls of the embedded grooves are fixedly connected with the outer sides of the corresponding racks 9, first through holes 7 are formed in the top of the guide rod 3, gears 8 are rotatably installed between the inner walls of the front sides and the inner walls of the rear sides of the first through holes 7, bearings are fixedly connected to the inner walls of the front sides and the inner walls of the rear sides of the first through holes 7, the inner walls of the two bearings are fixedly connected with the outer sides of the pins, the front sides of the gears 8 are fixedly connected with the inner walls of the pins, the top and the bottom of the gears 8 respectively extend to the upper portions and the lower portions of the guide rod 3, the gears 8 are positioned between the two racks 9 and meshed with the two racks 9, and the driving effect of the linkage driving of the two racks 9 can be achieved;
elastic extrusion mechanism establishes the extrusion stem 15 at the rectangular channel 14 including the slip cap, wherein the top fixedly connected with stopper of extrusion stem 15, spacing hole has been seted up on the top inner wall of rectangular channel 14, stopper and the spacing hole sliding connection who corresponds, the stopper cooperatees with spacing hole, carry out spacing anticreep to extrusion stem 15, extrusion stem 15's rear side bonds with the corresponding front side of cleaning cotton 17 and fixes, wherein extrusion stem 15's rear side bonds and is fixed with public magic subsides, clean between cotton 17's the front side bond and be fixed with female magic subsides, public magic subsides are pasted mutually with corresponding female magic subsides, the cooperation of public magic subsides and female magic subsides, convenient follow-up cotton 17 to cleaning takes off to change or clear up, fixed connection has a plurality of compression springs 16 that are in the compression state between extrusion stem 15's front side and the corresponding rectangular channel 14's front side inner wall, the utility model discloses be convenient for two clean cotton 17 of automatic drive before the use and remove the front side to the direction that keeps away from each other or be close to the lens 101 and carry out and clear up, reduce the phenomenon that the dust influences the detection, and the compression spring sets up the stability that the contact of cleaning is being cleaned all the back lens, make the contact of the lens 101 that the contact that the cotton of cleaning all the back can be improved, the contact all the lens, the lens 101, the use, the stability of the lens is satisfied all the contact of cleaning process of the lens is all the contact all the lens is all the contact.
The working principle is as follows: when the cleaning device is used, when dust on the front side of a plane lens 101 needs to be cleaned, an electric telescopic rod 11 is started in a forward direction, an output shaft of the electric telescopic rod 11 drives an L-shaped rod 10 to move rightwards, the L-shaped rod 10 drives a left moving block 4 to slide rightwards on a guide rod 3, the left moving block 4 drives a left moving block 5 to move rightwards, the left moving block 5 drives a left rack 9 to move rightwards, the left rack 9 drives a gear 8 meshed with the left rack 9 to rotate, the gear 8 drives a right rack 9 to move leftwards, the right rack 9 drives a right moving block 4 to move leftwards, so that the two moving blocks 4 move towards a mutually approaching direction, the two moving blocks 4 drive two brush rods 2 to move towards the mutually approaching direction, the brush rods 2 drive cleaning cotton 17 to move through corresponding extrusion rods 15, the two cleaning cotton 17 move towards the mutually approaching direction to clean the front side of the plane lens 101, when the L-shaped rod 10 is contacted with a light touch reverse starting switch 13, the light touch reverse starting switch 13 is triggered to be started, the light touch reverse starting switch 13 is controlled by a controller to control the light touch the electric telescopic rod to move forwards and the light touch switch 12 to control the light touch the front side of the cleaning switch to move towards the right side of the cleaning switch 12, and the cleaning switch to control the front side of the cleaning switch to move forward side of the cleaning switch 12, and the cleaning switch to control the light contact of the cleaning switch 12, and the light touch the light contact of the light touch switch to control the light contact of the light contact switch to move forward side of the cleaning switch 12, when the light contact switch 12, extrusion stem 15 gives the cotton 17 backward extrusion force of wiping that corresponds for wiping the in-process, the rear side of wiping cotton 17 can all the time with the front side in close contact with of plane lens 101, improve and wipe stability, make two automatic drive wipe cotton 17 remove to the direction of keeping away from each other or being close to each other before the use and wipe the clearance to the front side of plane lens 101, reduce and be stained with the phenomenon that attaches the dust influence and detect because of the front side of plane lens.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (7)

1. A background suppression photoelectric sensor based on wireless transmission comprises a background suppression photoelectric sensor body (100), wherein a plane lens (101) is embedded in the front side of the background suppression photoelectric sensor body (100), a distance measurement module (102) and a wireless transmission module are installed in the background suppression photoelectric sensor body (100), the distance measurement module (102) is positioned on the rear side of the plane lens (101) and matched with the plane lens (101), the background suppression photoelectric sensor is characterized in that the bottom of the background suppression photoelectric sensor body (100) is fixedly connected with a mounting box (1) with the top being an opening, a guide rod (3) is fixedly connected between the inner walls of two sides of the mounting box (1), two moving blocks (4) are slidably sleeved on the guide rod (3), two brush rods (2) are arranged on the front side of the background suppression photoelectric sensor body (100), the bottom ends of the brush rods (2) extend into the mounting box (1) and are fixedly connected with the tops of the corresponding moving blocks (4), a linkage driving mechanism is fixedly connected between one side where the two moving blocks (4) are close to each other, a linkage driving mechanism is arranged on the guide rod (3), two side of the moving blocks (4) are fixedly connected with a moving rod (6), and a moving rod (6) is arranged on the left side of the linkage driving mechanism, and a moving rod (6) is arranged on the bottom of the movable block (6) and a movable rod (6) which is connected with a movable rod (6) which is fixedly connected with a movable rod (6) which is arranged, the right end of the output shaft of the electric telescopic rod (11) is fixedly connected with the right inner wall of the L-shaped rod (10), the inner wall of the bottom of the mounting box (1) is fixedly connected with a light-touch forward starting switch (12) and a light-touch reverse starting switch (13), the L-shaped rod (10) is positioned between the light-touch forward starting switch (12) and the light-touch reverse starting switch (13) and is matched with the light-touch forward starting switch (12) and the light-touch reverse starting switch (13), the front side of the electric telescopic rod (11) is fixedly connected with a controller, the controller is electrically connected with the light-touch forward starting switch (12) and the light-touch reverse starting switch (13), a rectangular groove (14) is formed in the rear side of the brush rod (2), an elastic extrusion mechanism is sleeved in the rectangular groove (14), the rear side of the elastic extrusion mechanism is fixedly bonded with a wiping cotton (17), and the rear side of the wiping cotton (17) is flush with the front side of the plane lens (101).
2. The background suppression photoelectric sensor based on wireless transmission is characterized in that the linkage driving mechanism comprises two moving rods (5), the two moving rods (5) are respectively located above and below the guide rod (3), the moving rods (5) are matched with corresponding avoidance holes (6), one ends, far away from each other, of the two moving rods (5) are fixedly connected with one sides, close to each other, of the two moving blocks (4), racks (9) are embedded in one sides, close to the guide rod (3), of the moving rods (5), a first through hole (7) is formed in the top of the guide rod (3), a gear (8) is rotatably installed between the inner wall of the front side and the inner wall of the rear side of the first through hole (7), the top and the bottom of the gear (8) respectively extend to the upper side and the lower side of the guide rod (3), and the gear (8) is located between the two racks (9) and meshed with the two racks (9).
3. The background suppression photoelectric sensor based on wireless transmission is characterized in that the elastic pressing mechanism comprises a pressing rod (15) which is slidably sleeved in the rectangular groove (14), the rear side of the pressing rod (15) is fixedly bonded with the front side of the corresponding wiping cotton (17), and a plurality of compression springs (16) in a compressed state are fixedly connected between the front side of the pressing rod (15) and the inner wall of the front side of the corresponding rectangular groove (14).
4. The background suppression photoelectric sensor based on wireless transmission as claimed in claim 1, wherein a guide hole is formed in one side of the moving block (4), and the inner wall of the guide hole is slidably connected with the outer side of the guide rod (3).
5. The background suppression photoelectric sensor based on wireless transmission is characterized in that one side of the moving rod (5) close to the guide rod (3) is provided with an embedded groove, and the inner wall of the embedded groove is fixedly connected with the outer side of the corresponding rack (9).
6. The background suppression photoelectric sensor based on wireless transmission is characterized in that a male magic tape is adhered and fixed to the rear side of the extrusion rod (15), a female magic tape is adhered and fixed to the front side of the wiping cotton (17), and the male magic tape is adhered to the corresponding female magic tape.
7. The background suppression photoelectric sensor based on wireless transmission according to claim 3, wherein a limiting block is fixedly connected to the top of the extrusion rod (15), a limiting hole is formed in the inner wall of the top of the rectangular groove (14), and the limiting block is slidably connected with the corresponding limiting hole.
CN202221279898.7U 2022-05-25 2022-05-25 Background suppression photoelectric sensor based on wireless transmission Active CN218037320U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221279898.7U CN218037320U (en) 2022-05-25 2022-05-25 Background suppression photoelectric sensor based on wireless transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221279898.7U CN218037320U (en) 2022-05-25 2022-05-25 Background suppression photoelectric sensor based on wireless transmission

Publications (1)

Publication Number Publication Date
CN218037320U true CN218037320U (en) 2022-12-13

Family

ID=84374175

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202221279898.7U Active CN218037320U (en) 2022-05-25 2022-05-25 Background suppression photoelectric sensor based on wireless transmission

Country Status (1)

Country Link
CN (1) CN218037320U (en)

Similar Documents

Publication Publication Date Title
CN211488676U (en) Dustproof device for LED display screen
CN218037320U (en) Background suppression photoelectric sensor based on wireless transmission
CN110726048B (en) Attendance device based on face identification
CN209897025U (en) Outdoor mirror reflection type photoelectric switch
CN213041250U (en) Photoelectric sensor's packaging hardware
CN212302185U (en) Optical filter switcher with switching detection function
CN218655629U (en) Reflection type photoelectric sensor
CN111706172A (en) Can touch screen promotion formula protection device is met to fingerprint intelligence lock that screen was cleaned
CN216387358U (en) Anti-interference laser sensor
CN208062819U (en) Charger with cleaning mobile phone screen function
CN220570777U (en) Novel controller
CN219906601U (en) Elevator control panel capable of preventing false touch
CN111208331A (en) Ammeter protection equipment
CN214157219U (en) Driving type floor washing machine control system
CN215990654U (en) Supporting mechanism for photovoltaic power generation panel with overturning self-cleaning function
CN218343376U (en) Automobile rearview mirror with dustproof mechanism
CN113192787B (en) Electric switch blade with high safety performance
CN219266840U (en) Touch screen industrial personal computer
CN218957168U (en) Intelligent data acquisition device
CN217835605U (en) Infrared safety protection device
CN215181927U (en) Touch screen with dustproof construction
CN217116053U (en) Novel micro-control electronic switch
CN216621464U (en) Smoke blackness contrast device capable of being cleaned
CN216702467U (en) Handheld mopping machine with dust detection function
CN114771130B (en) Blackboard with automatic wiping function for teaching

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant