CN114049728B - Self-service settlement platform of unmanned bookstore - Google Patents
Self-service settlement platform of unmanned bookstore Download PDFInfo
- Publication number
- CN114049728B CN114049728B CN202111448971.9A CN202111448971A CN114049728B CN 114049728 B CN114049728 B CN 114049728B CN 202111448971 A CN202111448971 A CN 202111448971A CN 114049728 B CN114049728 B CN 114049728B
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- plate
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- push plate
- moving mechanism
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Classifications
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/0036—Checkout procedures
- G07G1/0045—Checkout procedures with a code reader for reading of an identifying code of the article to be registered, e.g. barcode reader or radio-frequency identity [RFID] reader
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/0018—Constructional details, e.g. of drawer, printing means, input means
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/01—Details for indicating
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07G—REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS
- G07G1/00—Cash registers
- G07G1/12—Cash registers electronically operated
Abstract
The invention discloses an unmanned bookstore self-service settlement platform, and relates to the technical field of bookstore management. Establish scanning platform on the supporting seat, establish books on the supporting seat and place the case, the through-hole department of supporting seat establishes books containing box, books are placed the incasement portion and are established the baffle, establish weight sensor on the baffle, establish push pedal vertical movement mechanism on the books are placed the case, establish frame moving mechanism on the supporting seat, establish laser scanner on the frame, the frame passes through push pedal horizontal movement mechanism and drives the push pedal and remove in the horizontal direction, push pedal horizontal movement mechanism passes through first spring and is connected with first connecting plate one end, the first connecting plate other end is connected with books containing box sliding connection's gate. Compared with bookstores in the traditional operation mode, the bookstore management system avoids the condition that a great amount of time is needed from selection to payment of customers, achieves the effect of facilitating the customers to independently and conveniently complete purchase, meets the use requirements of markets, saves the labor cost of bookstore management, and enables the bookstore to be managed in an unmanned mode.
Description
Technical Field
The invention belongs to the technical field of bookstore management, and particularly relates to an unmanned bookstore self-service settlement platform.
Background
At present, the internet of things and big data technology which are rapidly developed promote the popularization of online shopping services, which also leads to the tragic of a plurality of physical bookstores, and the operation of most physical bookstores at present requires great operation cost, especially the expenditure of labor cost, and the cost of manual service is higher and higher, which also directly leads to the risk of closing a plurality of physical shops.
The existing bookstore mostly adopts a traditional operation mode, manual operation is adopted for buying books, the working efficiency is low, the error rate is high at the same time, the situation of losing books can occur, a large amount of queuing phenomenon can be caused at the same time, a large amount of time is needed from selection to payment, the use requirement of the market is difficult to meet, an unmanned bookstore is relatively lacking in the market, the unmanned bookstore can facilitate efficient and convenient autonomous completion of purchasing of customers, meanwhile, the unmanned bookstore can combine culture and consumption, and comprehensive service is provided for the customers, so that the physical life and cultural life of people are more convenient.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide an unmanned bookstore self-service settlement platform which improves the working efficiency and reduces the manual operation and the manual error rate.
The technical scheme adopted for solving the technical problems is as follows: be provided with scanning platform on the supporting seat, be located scanning platform one side on the supporting seat and be provided with the books and place the case, the through-hole department of supporting seat is provided with the books containing box that is located scanning platform opposite side, books are placed the incasement portion and are evenly provided with the baffle along the vertical direction, be provided with the weight sensor who is connected with the controller electricity on the baffle, books are placed and are provided with the push pedal vertical movement mechanism that drives the push pedal and follow the vertical direction and remove on the case, be provided with the frame moving mechanism that drives the frame along the reciprocating horizontal movement of supporting seat on the supporting seat, be provided with the laser scanner that follows the frame vertical direction and remove on the frame, the frame passes through push pedal horizontal movement mechanism and drives the push pedal and remove in the horizontal direction, push pedal horizontal movement mechanism passes through first spring and is connected with first connecting plate one end, first connecting plate other end and books containing box sliding connection's gate are connected, supporting seat one side is provided with the display screen of being connected with the controller electricity.
Further, the frame moving mechanism is: the supporting seat one side is provided with the second backup pad, the second backup pad is provided with the first motor of drive second connecting plate pivoted, the second connecting plate rotates with second rack one end to be connected, the second rack other end and third connecting plate fixed connection, the second backup pad rotates with third connecting plate respectively through the third connecting axle, first gear, second gear is connected, second rack and first gear meshing transmission, sliding connection has first rack on the mount in the second backup pad, second gear and first rack meshing transmission, first rack passes through second connecting axle and frame one side fixed connection.
Further, the supporting seat opposite side be provided with first backup pad, be provided with first connecting axle on the frame, first connecting axle one end and frame one side sliding connection, the recess sliding connection of the other end and first backup pad are provided with laser scanner on the first connecting axle, the connecting block of the epaxial both sides of first connecting respectively with second spring one end fixed connection, two second spring other ends respectively with frame roof fixed connection.
Further, the push plate vertical movement mechanism is: one side is provided with the second motor of drive first lead screw pivoted on the roof, first lead screw and push pedal horizontal migration mechanism rotate to be connected, push pedal horizontal migration mechanism and fourth connecting plate one end fixed connection, the opposite side passes through the fourth connecting axle and rotates to be connected with push pedal horizontal migration mechanism on the roof, push pedal horizontal migration mechanism and fourth connecting plate other end fixed connection, push pedal one end and the spout sliding connection of fourth connecting plate, push pedal one end and push pedal horizontal migration mechanism fixed connection, the spout sliding connection of push pedal other end and fifth connecting plate, fifth connecting plate both ends are rotated with the roof through the fifth connecting axle respectively.
Further, the push plate horizontal moving mechanism is as follows: the frame is rotationally connected with one end of a universal shaft through a second lead screw, the other end of the universal shaft is rotationally connected with a rotary table on the top plate, the rotary table is rotationally connected with one end of a seventh connecting shaft through a belt, a fourth gear is arranged at the other end of the seventh connecting shaft, the first lead screw is rotationally connected with a first lifting plate, the fourth connecting shaft is rotationally connected with a second lifting plate, the second lifting plate is fixedly connected with a push plate, the first lifting plate is connected with the second lifting plate through a sixth connecting shaft, and a third gear meshed with the fourth gear is arranged on the sixth connecting shaft.
The beneficial effects of the invention are as follows:
(1) The invention adopts the partition board for placing the purchased books in the book placing box, the weight sensor on the partition board transmits a signal to the controller after detecting the weight, the push board vertical moving mechanism drives the push board to move to the partition board with the books under the control of the controller, the push board moves to push the books to the scanning platform through the laser scanner on the frame, the laser scanner scans the books and then sends scanning information to the display screen, the laser scanner pushes the books into the book containing box, after settlement is finished, a customer takes the books out from the gate of the book containing box, compared with a bookstore in the traditional operation mode, the situation that the customer needs a large amount of time from selecting to paying is avoided, the effect of being convenient for the customer to complete the purchase efficiently and conveniently is achieved, the use requirement of the market is met, meanwhile, the manual operation is reduced, the labor cost of bookstore management is saved, the working efficiency is improved, and the bookstore is unmanned.
(2) When the books are not settled, the gate seals the book storage box, so that the fault tolerance can be reduced, and the situation that the books are lost can be prevented.
Drawings
FIG. 1 is a schematic diagram of one embodiment of an unmanned bookstore self-checkout platform of the present invention.
Fig. 2 is a schematic view of the structure of fig. 1 at another angle.
Fig. 3 is a schematic view of the structure of fig. 1 with the first support plate 16 removed.
Fig. 4 is a schematic structural view of the frame moving mechanism 5 in fig. 1.
Fig. 5 is a schematic structural view of the first support plate 16, the first connecting shaft 17, the second spring 18, and the connecting block 19.
Fig. 6 is a schematic structural view of the push plate vertical movement mechanism 7 and the push plate horizontal movement mechanism 12 in fig. 1.
Reference numerals: 1. a display screen; 2. a frame; 3. a laser scanner; 4. a book storage box; 5. a frame moving mechanism; 501. a second connecting shaft; 502. a first rack; 503. a second support plate; 504. a first motor; 505. a second connecting plate; 506. a second rack; 507. a third connecting plate; 508. a first gear; 509. a third connecting shaft; 5010. a second gear; 5011. a fixing frame; 6. a scanning platform; 7. a push plate vertical movement mechanism; 701. a second motor; 702. a first lead screw; 703. a fourth connecting plate; 704. a fourth connecting shaft; 705. a fifth connecting plate; 706. a fifth connecting shaft; 707. a top plate; 8. a support base; 9. a push plate; 10. a partition plate; 11. a book placement box; 12. a push plate horizontal movement mechanism; 1201. a first lifting plate; 1202. a sixth connecting shaft; 1203. a seventh connecting shaft; 1204. a third gear; 1205. a fourth gear; 1206. a second lifting plate; 1207. a belt; 1208. a universal shaft; 1209. a second lead screw; 13. a first spring; 14. a first connection plate; 15. a gate; 16. a first support plate; 17. a first connecting shaft; 18. a second spring; 19. a connecting block; a. a groove.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 3, the self-service settlement platform for the unmanned bookstore of the present embodiment is composed of a display screen 1, a frame 2, a laser scanner 3, a book storage box 4, a frame moving mechanism 5, a scanning platform 6, a push plate vertical moving mechanism 7, a support base 8, a push plate 9, a partition plate 10, a book placing box 11, a push plate horizontal moving mechanism 12, a first spring 13, a first connecting plate 14, and a gate 15 which are connected.
The scanning platform 6 is installed on the supporting seat 8, the book placing box 11 is located on one side of the scanning platform 6, the book containing box 4 is installed at the through hole of the supporting seat 8, the book containing box 4 is located on the other side of the scanning platform 6, the partition board 10 is evenly arranged inside the book placing box 11 along the vertical direction, the partition board 10 is used for placing books, the weight sensor is installed on the partition board 10, a signal is transmitted to the controller after the weight sensor detects the weight, the controller is in the prior art, and the inventor realizes corresponding control functions through programming according to specific functions to be realized. The book placing box 11 is provided with a pushing plate vertical moving mechanism 7, and the pushing plate vertical moving mechanism 7 is used for driving the pushing plate 9 to move along the vertical direction and driving the pushing plate 9 to move to the corresponding partition board 10 with books. The frame moving mechanism 5 is arranged on the supporting seat 8, the frame moving mechanism 5 drives the frame 2 to move horizontally along the supporting seat 8 in a reciprocating manner, the laser scanner 3 is arranged on the frame 2, the laser scanner 3 moves along the vertical direction of the frame 2, the frame 2 moves to drive the laser scanner 3 to move to the scanning platform 6 in the horizontal direction, and after books on the scanning platform 6 are scanned, the books are pushed to fall into the book placing box 11. The frame 2 drives the pushing plate 9 to move in the horizontal direction through the pushing plate horizontal moving mechanism 12, and the books placed on the partition plates 10 are pushed onto the scanning platform 6. The push plate horizontal moving mechanism 12 is connected with one end of a first connecting plate 14 through a first spring 13, the other end of the first connecting plate 14 is connected with a gate 15 which is slidably connected with the book storage box 4, and the gate 15 is used for controlling the opening of the book storage box 11. The display screen 1 that the controller electricity is connected is installed to supporting seat 8 one side, and laser scanner 3 sends the books information of scanning to display screen 1, and display screen 1 is the known technique in this embodiment to show the settlement two-dimensional code of books on display screen 1, display screen 1 will signal transmission to the controller, under the controller control, push pedal 9 resets, and gate 15 on the books containing box 4 opens, and the customer takes out books from books containing box 4, accomplishes self-service settlement work.
As shown in fig. 4 and 5, the frame moving mechanism 5 is formed by connecting a first support plate 16, a first connecting shaft 17, a second spring 18, a connecting block 19, a second connecting shaft 501, a first rack 502, a second support plate 503, a first motor 504, a second connecting plate 505, a second rack 506, a third connecting plate 507, a first gear 508, a third connecting shaft 509, a second gear 5010, and a fixing bracket 5011, and the frame moving mechanism 5 is: the second backup pad 503 is installed to supporting seat 8 one side, first motor 504 is installed to second backup pad 503, first motor 504 drive second connecting plate 505 rotates, second connecting plate 505 rotates with second rack 506 one end to be connected, second rack 506 other end and third connecting plate 507 fixed connection, second backup pad 503 rotates with third connecting plate 507 respectively through third connecting axle 509, first gear 508, second gear 5010 is connected, second rack 506 and first gear 508 meshing transmission, sliding connection has first rack 502 on the mount 5011 on the second backup pad 503, second gear 5010 and first rack 502 meshing transmission, first rack 502 passes through second connecting axle 501 and frame 2 one side fixed connection. The first backup pad 16 is installed to the supporting seat 8 opposite side, installs first connecting axle 17 on the frame 2, and first connecting axle 17 one end and frame 2 one side sliding connection, the recess a sliding connection of first connecting axle 17 other end and first backup pad 16 installs laser scanner 3 on the first connecting axle 17, and the connecting block 19 of both sides on the first connecting axle 17 are respectively with second spring 18 one end fixed connection, two second spring 18 other ends respectively with frame 2 roof fixed connection.
As shown in fig. 6, the push plate vertical movement mechanism 7 is formed by coupling a second motor 701, a first screw 702, a fourth connection plate 703, a fourth connection shaft 704, a fifth connection plate 705, a fifth connection shaft 706, and a top plate 707, and the push plate vertical movement mechanism 7 is: a second motor 701 is arranged on one side of the top plate 707, the second motor 701 drives the first screw rod 702 to rotate, the first screw rod 702 is rotationally connected with a push plate horizontal moving mechanism 12, the push plate horizontal moving mechanism 12 is fixedly connected with one end of a fourth connecting plate 703, the other side of the top plate 707 is rotationally connected with the push plate horizontal moving mechanism 12 through a fourth connecting shaft 704, the push plate horizontal moving mechanism 12 is fixedly connected with the other end of the fourth connecting plate 703, one end of a push plate 9 is slidingly connected with a sliding groove of the fourth connecting plate 703, one end of the push plate 9 is fixedly connected with the push plate horizontal moving mechanism 12, the other end of the push plate 9 is slidingly connected with a sliding groove of a fifth connecting plate 705, and two ends of the fifth connecting plate 705 are respectively rotationally connected with the top plate 707 through fifth connecting shafts 706.
The push plate horizontal movement mechanism 12 is formed by connecting a first lifting plate 1201, a sixth connecting shaft 1202, a seventh connecting shaft 1203, a third gear 1204, a fourth gear 1205, a second lifting plate 1206, a belt 1207, a universal shaft 1208 and a second screw 1209, and the push plate horizontal movement mechanism 12 is: the frame 2 is rotatably connected with one end of a universal shaft 1208 through a second lead screw 1209, the other end of the universal shaft 1208 is rotatably connected with a rotary table on a top plate 707, the rotary table is rotatably connected with one end of a seventh connecting shaft 1203 through a belt 1207, a fourth gear 1205 is arranged at the other end of the seventh connecting shaft 1203, the first lead screw 702 is rotatably connected with a first lifting plate 1201, the fourth connecting shaft 704 is rotatably connected with a second lifting plate 1206, the second lifting plate 1206 is fixedly connected with the push plate 9, the first lifting plate 1201 is connected with the second lifting plate 1206 through a sixth connecting shaft 1202, a third gear 1204 is arranged on the sixth connecting shaft 1202, and the third gear 1204 is meshed with the fourth gear 1205 for transmission.
The working principle of this embodiment is as follows:
(1) Placing the purchased books into the partition plate 10 in the book placing box 11, transmitting signals to the controller after the weight sensor on the partition plate 10 detects the weight, starting the second motor 701 under the control of the controller, driving the first screw rod 702 to rotate by the second motor 701, driving the first lifting plate 1201 and the fourth connecting plate 703 to vertically and linearly move along the first screw rod 702 by the first screw rod 702, driving the second lifting plate 1206 to vertically and linearly move along the first screw rod 702 by the fourth connecting plate 703, and simultaneously driving the push plate 9 to rise to the corresponding position of the partition plate 10 with the books.
(2) Starting the first motor 504, the first motor 504 drives the second connecting plate 505 to move, the second connecting plate 505 drives the second rack 506 to be meshed with the first gear 508 for transmission, the first gear 508 drives the third connecting shaft 509 to rotate, the third connecting shaft 509 drives the second gear 5010 to be meshed with the first rack 502 for transmission, the first rack 502 moves on the fixing frame 5011, the first rack 502 drives the frame 2 to move on the sliding groove of the supporting seat 8 through the second connecting shaft 501, the frame 2 drives the second lead screw 1209 to rotate, the second lead screw 1209 drives the turntable to rotate through the universal shaft 1208, the turntable drives the seventh connecting shaft 1203 to rotate through the belt 1207, the seventh connecting shaft 1203 drives the fourth gear 1205 to rotate, the fourth gear 1205 is meshed with the third gear 1204 for transmission, the third gear 1204 drives the sixth connecting shaft 1202 to rotate, the sixth connecting shaft 1202 drives the push plate 9 to move on the sixth connecting shaft 1202, and the book partition 10 on the partition 10 is dropped onto the scanning platform 6. Meanwhile, the frame 2 moves on the upper side in the groove a of the first supporting plate 16 through the first connecting shaft 17, (in an initial state, the first connecting shaft 17 is in the upper right corner of the groove a of the first supporting plate 16, the second spring 18 is in a contracted state), the laser scanner 3 scans books on the scanning platform 6, the laser scanner 3 sends scanned book information to the display screen 1 and displays a settlement two-dimensional code of the books on the display screen 1, when the first connecting shaft 17 moves to the lower left corner of the groove a of the first supporting plate 16, the second spring 18 is in a stretched state, the laser scanner 3 is lowered to the lowest height, after the scanning is finished, the laser scanner 3 moves the books into the book storage box 4, after the settlement of the two-dimensional code information on the display screen 1 is finished, the display screen 1 transmits signals to the controller, under the control of the controller, the push plate 9 is reset, the gate 15 on the book storage box 4 is opened, the customer takes out the books from the book storage box 4, and self-service work is finished.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.
Claims (2)
1. An unmanned bookstore self-service settlement platform which is characterized in that: a scanning platform (6) is arranged on a supporting seat (8), a book containing box (4) positioned on the other side of the scanning platform (6) is arranged at a through hole of the supporting seat (8), a partition plate (10) is uniformly arranged inside the book containing box (11) along the vertical direction, a weight sensor electrically connected with a controller is arranged on the partition plate (10), a push plate vertical moving mechanism (7) for driving a push plate (9) to move along the vertical direction is arranged on the book containing box (11), a frame moving mechanism (5) for driving a frame (2) to move along the supporting seat (8) in a reciprocating and horizontal mode is arranged on the supporting seat (8), a laser scanner (3) for moving along the vertical direction of the frame (2) is arranged on the frame (2), the frame (2) drives the push plate (9) to move along the horizontal direction through the push plate horizontal moving mechanism (12), the push plate horizontal moving mechanism (12) is connected with one end of a first connecting plate (14) through a first spring (13), the other end of the first connecting plate (14) is connected with one end of a book containing gate (4), and the other end of the first connecting plate (14) is connected with a display screen (15) in sliding connection with the supporting seat (8);
the frame moving mechanism (5) is as follows: a second supporting plate (503) is arranged on one side of the supporting seat (8), a first motor (504) for driving a second connecting plate (505) to rotate is arranged on the second supporting plate (503), the second connecting plate (505) is rotationally connected with one end of a second rack (506), the other end of the second rack (506) is fixedly connected with a third connecting plate (507), the second supporting plate (503) is rotationally connected with the third connecting plate (507), a first gear (508) and a second gear (5010) respectively through a third connecting shaft (509), the second rack (506) is in meshed transmission with the first gear (508), a first rack (502) is slidingly connected on a fixing frame (5011) on the second supporting plate (503), the second gear (5010) is in meshed transmission with the first rack (502), and the first rack (502) is fixedly connected with one side of the frame (2) through the second connecting shaft (501);
the push plate vertical movement mechanism (7) is as follows: a second motor (701) for driving the first screw rod (702) to rotate is arranged on one side of the top plate (707), the first screw rod (702) is rotationally connected with a push plate horizontal moving mechanism (12), the push plate horizontal moving mechanism (12) is fixedly connected with one end of a fourth connecting plate (703), the other side of the top plate (707) is rotationally connected with the push plate horizontal moving mechanism (12) through a fourth connecting shaft (704), the push plate horizontal moving mechanism (12) is fixedly connected with the other end of the fourth connecting plate (703), one end of the push plate (9) is slidingly connected with a sliding groove of the fourth connecting plate (703), one end of the push plate (9) is fixedly connected with the push plate horizontal moving mechanism (12), the other end of the push plate (9) is slidingly connected with a sliding groove of a fifth connecting plate (705), and two ends of the fifth connecting plate (705) are rotationally connected with the top plate (707) through fifth connecting shafts (706);
the push plate horizontal movement mechanism (12) is as follows: the frame (2) is rotationally connected with one end of a universal shaft (1208) through a second lead screw (1209), the other end of the universal shaft (1208) is rotationally connected with a rotary table on a top plate (707), the rotary table is rotationally connected with one end of a seventh connecting shaft (1203) through a belt (1207), a fourth gear (1205) is arranged at the other end of the seventh connecting shaft (1203), the first lead screw (702) is rotationally connected with a first lifting plate (1201), the fourth connecting shaft (704) is rotationally connected with a second lifting plate (1206), the second lifting plate (1206) is fixedly connected with a push plate (9), the first lifting plate (1201) is connected with the second lifting plate (1206) through a sixth connecting shaft (1202), and a third gear (1204) which is in meshed transmission with the fourth gear (1205) is arranged on the sixth connecting shaft (1202).
2. The self-service settlement platform of the unmanned bookstore according to claim 1, wherein a first supporting plate (16) is arranged on the other side of the supporting seat (8), a first connecting shaft (17) is arranged on the frame (2), one end of the first connecting shaft (17) is in sliding connection with one side of the frame (2), the other end of the first connecting shaft is in sliding connection with a groove (a) of the first supporting plate (16), a laser scanner (3) is arranged on the first connecting shaft (17), connecting blocks (19) on two sides of the first connecting shaft (17) are fixedly connected with one end of a second spring (18) respectively, and the other ends of the two second springs (18) are fixedly connected with a top plate of the frame (2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111448971.9A CN114049728B (en) | 2021-12-01 | 2021-12-01 | Self-service settlement platform of unmanned bookstore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111448971.9A CN114049728B (en) | 2021-12-01 | 2021-12-01 | Self-service settlement platform of unmanned bookstore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114049728A CN114049728A (en) | 2022-02-15 |
| CN114049728B true CN114049728B (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111448971.9A Active CN114049728B (en) | 2021-12-01 | 2021-12-01 | Self-service settlement platform of unmanned bookstore |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4101086B2 (en) * | 2003-02-26 | 2008-06-11 | 株式会社トーハン | Sorting equipment for returned books |
| CN108537998A (en) * | 2018-06-20 | 2018-09-14 | 丁可 | A kind of library book apparatus based on fingerprint payment |
| CN110033570B (en) * | 2019-04-22 | 2021-03-30 | 海口一纬科技有限公司 | Intelligent library borrowing and returning machine |
| CN214704794U (en) * | 2021-05-26 | 2021-11-12 | 山东至辰信息科技股份有限公司 | Outdoor street is with 24 hours unmanned bookstore selling device |
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2021
- 2021-12-01 CN CN202111448971.9A patent/CN114049728B/en active Active
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| CN114049728A (en) | 2022-02-15 |
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