Article storage cabinet scanning device and scanning method

Abstract

The present application discloses a scanning device and a scanning method for an item storage cabinet, wherein the scanning device includes: an X-direction moving mechanism, a Y-direction moving mechanism, a mobile antenna assembly, and a control circuit. The Y-direction moving mechanism includes a vertically arranged vertical beam, a Y-direction DC motor, and a Y-direction synchronous belt; the X-direction moving mechanism includes an X-direction stepping motor, an X-direction synchronous belt, and a mobile crossbeam arranged perpendicular to the vertical beam, and the middle part of the mobile crossbeam is fixedly mounted on the Y-direction synchronous belt; the mobile antenna assembly is mounted on the X-direction synchronous belt, and performs linear reciprocating motion in the horizontal direction under the drive of the X-direction synchronous belt, and the mobile antenna assembly includes an RFID near-field antenna and a reader / writer, and the RFID near-field antenna faces the item storage box inside the cabinet. The present application simplifies the motion mechanism of the item storage cabinet, and realizes the scanning inventory of items placed in the item storage boxes of a single cabinet layer, multiple cabinet layers, or an entire cabinet by moving a mobile antenna assembly to multiple operating positions in the horizontal and vertical directions.

Description

Technical Field

[0001] The present invention relates to the technical field of object storage cabinets, and in particular to an object storage cabinet scanning device and a scanning method. Background Art

[0002] An item storage cabinet is a storage cabinet that can hold items, such as a filing cabinet, a seal card cabinet, etc. It usually includes a cabinet body and a cabinet door. The cabinet body is provided with multiple independent storage cavities, each storage cavity is placed with multiple storage boxes, and the storage box is provided with a storage cavity for accommodating multiple items (such as files, seal cards, deposit slips, etc.).

[0003] Taking the seal card cabinet for storing seal cards as an example, the seal card cabinets in the prior art are mostly cylindrical structures. For example, the applicant disclosed a seal card cabinet and a seal card automatic inventory method in patent CN108477865A. Figure 1 The seal card cabinet shown in the figure comprises nine layers of rotary components. Each layer of the rotary components comprises a disc-shaped carrier plate 52', which rotates around a fixed axis 51' at the center. On each layer of the carrier plate 52', a circle of guide rails 53' arranged along the radial direction are evenly arranged along the circumference. Each of the guide rails 53' is slidably fitted with a drawer box 54' (or called a seal card box) (such as Figure 2 ), a drawer box 54' usually stores a number of signature cards 55' (such as Figure 3 ), each signature card 55' is affixed with an RFID electronic tag 506'. Figure 4 , Figure 5 As shown, nine RFID radio frequency antennas 56' are staggered and distributed on the side of each layer of the carrier plate 52', and two four-channel UHF readers 57' are installed. When the nine-layer rotary assembly rotates, the drawer box 54' and the seal card 55' also rotate accordingly. The RFID radio frequency antenna 56' of each layer can receive the information on the seal card 55' in the corresponding drawer box 54' of each layer at any time, and feed it back to the four-channel UHF reader 57'. The four-channel UHF reader 57' identifies the label information of the RFID electronic tag 506' on the seal card 55', and reads and writes the label information on the seal card 55'. In this way, the flow of all the seal cards in the entire seal card cabinet can be monitored in real time, the access status of the seal cards can be determined, and the automatic inventory function can be realized.

[0004] The above-mentioned signature card cabinet and its inventory method are relatively inefficient, and the motion mechanism of the signature card cabinet (such as the above-mentioned swivel assembly) is also relatively complex. At the same time, multiple RFID radio frequency antennas are set in a cabinet, and the positions of the multiple RFID radio frequency antennas are fixed. When these RFID radio frequency antennas work at the same time, there is signal interference between the antennas, and the data redundancy of the multi-layer antennas is large, and the cost of setting up multiple RFID radio frequency antennas is also high. Similarly, the scanning inventory method of the item storage cabinet with other structures in the prior art also has the same problem.

[0005] Therefore, based on the above problems, there is still a need for improvement in the scanning device and scanning method of the item storage cabinet in the prior art. Summary of the invention

[0006] The object of the present invention is to provide an item storage cabinet scanning device and scanning method, which enables a mobile antenna assembly equipped with an RFID near-field antenna and a reader to move to multiple working positions in the horizontal direction and the vertical direction through an X-direction moving mechanism and a Y-direction moving mechanism, thereby realizing scanning and inventory of items in item storage boxes of a single cabinet layer, multiple cabinet layers or an entire cabinet in the item storage cabinet.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] The first aspect of the present application provides an article storage cabinet scanning device, the article storage cabinet comprises a cabinet body, the interior of the cabinet body is divided into a plurality of independent storage cavities from top to bottom by a plurality of horizontal partitions arranged horizontally, a plurality of article storage boxes are placed in each storage cavity, each article storage box is provided with an article receiving cavity for receiving a plurality of articles, and each article is affixed with an RFID electronic tag; the article storage cabinet scanning device comprises: an X-direction moving mechanism, a Y-direction moving mechanism, a moving antenna assembly installed on the X-direction moving mechanism, and a control circuit; wherein the Y-direction moving mechanism comprises:

[0009] A vertical beam is vertically arranged between the top plate and the bottom plate of the cabinet;

[0010] A Y-axis DC motor is arranged at the bottom of the vertical beam;

[0011] A Y-direction synchronous belt is vertically arranged on one side of the vertical beam, one end of which is provided with a second driving wheel arranged at the bottom of the vertical beam, the second driving wheel is connected to the output shaft of the Y-direction DC motor, and the other end of the Y-direction synchronous belt is provided with a second driven wheel arranged at the top of the vertical beam;

[0012] The X-direction moving mechanism comprises:

[0013] A movable crossbeam is arranged perpendicularly to the vertical beam, and the middle part of the movable crossbeam is fixedly installed on the Y-direction synchronous belt of the Y-direction moving mechanism;

[0014] An X-axis stepping motor is arranged at one end of the moving beam;

[0015] An X-direction synchronous belt is horizontally arranged on one side of the moving beam, one end of which is provided with a first driving wheel arranged at one end of the moving beam, the first driving wheel is connected to the output shaft of the X-direction stepping motor, and the other end of the X-direction synchronous belt is provided with a first driven wheel arranged at the other end of the moving beam;

[0016] The mobile antenna assembly is installed on the X-direction synchronous belt, and the mobile antenna assembly performs linear reciprocating motion in the horizontal direction along the mobile beam under the drive of the X-direction synchronous belt; the mobile antenna assembly includes an RFID near-field antenna and a reader / writer, and the RFID near-field antenna faces the item storage box inside the cabinet;

[0017] The control circuit is electrically connected to the X-direction stepping motor, the Y-direction DC motor and the moving antenna assembly respectively.

[0018] Preferably, the RFID near-field antenna feeds back the information of the received RFID electronic tag to the reader / writer, and the RFID electronic tag is attached to each object (such as a document) placed in the object storage box.

[0019] Preferably, the length of the movable cross beam is not greater than the length of the cabinet, and the length of the vertical beam is not greater than the height of the cabinet.

[0020] Preferably, an X-axis linear guide is provided on the movable crossbeam, the X-axis linear guide is parallel to the X-axis synchronous belt, a first slide is slidably provided on the X-axis linear guide, the mobile antenna assembly is fixedly arranged on the first slide, and the mobile antenna assembly is also fixedly connected to the X-axis synchronous belt, and the rotation of the X-axis synchronous belt drives the mobile antenna assembly and the first slide to perform linear reciprocating motion in the horizontal direction along the X-axis linear guide.

[0021] Preferably, a Y-direction linear guide is provided on the vertical beam, and the Y-direction linear guide is parallel to the Y-direction synchronous belt. A second slide is slidably provided on the Y-direction linear guide, and the second slide is also fixedly connected to the moving beam. The rotation of the Y-direction synchronous belt drives the moving beam and the second slide to perform linear reciprocating motion in the vertical direction along the Y-direction linear guide.

[0022] Preferably, a first mounting seat is provided at each end of the movable crossbeam, the first driving wheel is provided on one of the first mounting seats, the first driven wheel is provided on the other first mounting seat, and the X-direction synchronous belt is sleeved between the first driving wheel and the first driven wheel.

[0023] Preferably, a second mounting seat is provided at each end of the vertical beam, the second driving wheel is provided on one of the second mounting seats, the second driven wheel is provided on the other second mounting seat, and the Y-direction synchronous belt is sleeved between the second driving pulley and the second driven wheel.

[0024] Preferably, a first phototube is respectively provided at the left and right ends of the movable beam, for detecting in real time the position of the movable antenna assembly at both ends of the movable beam, and the first phototube is electrically connected to the control circuit; when the movable antenna assembly moves to the position of the first phototube at both ends, the first phototube sends a first signal to the control circuit, and the control circuit controls the operation of the X-axis stepper motor.

[0025] Preferably, at least two second phototubes are provided on the vertical beam, at least one is arranged at the top end of the vertical beam, and at least one is arranged at the bottom end of the vertical beam. A plurality of second phototubes are arranged at equal intervals along the extension direction of the vertical beam, and are used to detect the position of the moving beam in the vertical direction. The second phototubes are electrically connected to the control circuit; when the moving beam moves to the position of the second phototube, the second phototube sends a second signal to the control circuit, and the control circuit controls the operation of the Y-axis DC motor.

[0026] Preferably, one end of the movable horizontal beam and one end of the vertical beam are respectively provided with a first grating disk assembly and a second grating disk assembly, the first grating disk assembly and the second grating disk assembly both include a slot-type optical coupler and a grating disk, an axial hole is provided at the center of the grating disk, the disk surface of the grating disk passes through its corresponding slot-type optical coupler, and the receiving end of the slot-type optical coupler is connected to the control circuit; wherein, the grating disk of the first grating disk assembly is fixedly sleeved on the axle of the first driven wheel of the X-direction moving mechanism through its axial hole, the grating disk of the second grating disk assembly is fixedly sleeved on the axle of the second driven wheel of the Y-direction moving mechanism through its axial hole, the slot-type optical coupler of the first grating assembly is fixedly mounted on the movable horizontal beam, and the slot-type optical coupler of the second grating assembly is fixedly mounted on the vertical beam.

[0027] More preferably, the grating disk is made of opaque material, and a plurality of grating holes are evenly spaced on the disk surface of the grating disk. When the grating disk rotates, the disk surface of the grating disk passes through the slot of its corresponding slotted optical coupler. The slotted optical coupler can detect changes in light transmission and light blocking, and output the electrical signal during light transmission to the control circuit. The control circuit detects the direction and rotation speed of the shaft based on the changes in the signal.

[0028] A second aspect of the present application provides a scanning method of an object storage cabinet scanning device, which is applied to the above-mentioned object storage cabinet scanning device, and the scanning method includes:

[0029] Move the mobile antenna assembly equipped with the RFID near-field antenna and the reader to one end of the X-direction moving mechanism, with the RFID near-field antenna on the mobile antenna assembly facing the item storage box inside the cabinet;

[0030] Move the X-direction moving mechanism to one end of the Y-direction moving mechanism;

[0031] The X-axis stepper motor rotates under the control of the control circuit, driving the X-axis synchronous belt to rotate, thereby driving the mobile antenna assembly to move linearly in the horizontal direction from the starting position, detecting the RFID electronic tags on the items in each item storage box on the cabinet layer where the X-axis moving mechanism is located one by one, and feeding back to the reader / writer, the reader / writer identifies and reads and writes the item information, and sends the read item information to the control circuit until the mobile antenna assembly moves to the other end of the X-axis moving mechanism, thus completing the scanning inventory of the items in the item storage box on the first layer of the item storage cabinet;

[0032] After the single-layer detection is completed, the Y-axis DC motor drives the Y-axis synchronous belt, which in turn drives the X-axis moving mechanism to move upward a preset distance, and the X-axis stepping motor is started again to carry out the inventory of the items in the item storage box of the next cabinet layer;

[0033] Continue to move the X-direction moving mechanism upward according to the preset distance, scan and count the items layer by layer, until the X-direction moving mechanism moves to the other end of the Y-direction moving mechanism, and the items in all the item storage boxes are counted.

[0034] Preferably, a first photoelectric tube is provided at each of the left and right ends of the movable horizontal beam; at least two second photoelectric tubes are provided on the vertical beam, at least one is provided at the top end of the vertical beam, and at least one is provided at the bottom end of the vertical beam, and a plurality of the second photoelectric tubes are provided at equal intervals along the extension direction of the vertical beam; the first photoelectric tube and the second photoelectric tube are both electrically connected to the control circuit; the method further comprises:

[0035] When the mobile antenna assembly moves to the position of the first photoelectric tube at both ends of the mobile beam, the first photoelectric tube sends a first signal to the control circuit, and the control circuit controls the X-axis stepping motor to stop running to prevent it from hitting the transmission structure parts at both ends of the mobile beam;

[0036] When the movable horizontal beam moves to the position of the second photoelectric tubes at both ends of the vertical beam, the second photoelectric tube sends a second signal to the control circuit, and the control circuit controls the Y-axis DC motor to stop running to prevent it from hitting the top plate or bottom plate of the cabinet.

[0037] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0038] 1) The present application uses an X-direction moving mechanism and a Y-direction moving mechanism to move a mobile antenna assembly equipped with an RFID near-field antenna and a reader / writer in the horizontal and vertical directions to multiple working positions, wherein the mobile antenna assembly is fixed on the X-direction moving mechanism and can move laterally along the length direction of the moving crossbeam, and the X-direction moving mechanism is fixed on the Y-direction moving mechanism and can move longitudinally along the height direction of the vertical beam, thereby realizing scanning and inventory of items placed in item storage boxes on a specified cabinet layer or all cabinet layers of an item storage cabinet.

[0039] 2) The present application adopts a vertical beam and a movable horizontal beam installed on the vertical beam, which ensures the smooth movement of the entire scanning device and avoids the problems of difficult assembly and poor accuracy caused by setting two guide rails in the X direction or Y direction in the prior art. The present application simplifies the motion mechanism of the item storage cabinet, and its connection method is simple, fast and efficient, which reduces the failure rate of moving parts and improves the efficiency of item inventory.

[0040] 3) In the present application, only one mobile antenna assembly is used to realize the automatic inventory of all items in the entire item storage cabinet, which greatly reduces the cost and avoids the signal interference between antennas caused by setting up multiple RFID radio frequency antennas at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0042] Figure 1 It is a schematic diagram of the overall structure of the signature card cabinet previously applied for;

[0043] Figure 2 It is a structural schematic diagram of a drawer box in the signature card cabinet of the prior application;

[0044] Figure 3 It is a schematic diagram of the structure of the signature card in the signature card cabinet previously applied for;

[0045] Figure 4 It is a three-dimensional structural diagram of the installation position of the reader / writer and the RFID radio frequency antenna in the signature card cabinet previously applied for;

[0046] Figure 5 It is a planar structural diagram of the installation position of the reader / writer and the RFID radio frequency antenna in the signature card cabinet previously applied for;

[0047] Figure 6 It is a schematic diagram of the structure of the inner rear side of the article storage cabinet of the present application;

[0048] Figure 7This is a schematic diagram of the structure of the scanning device for the item storage cabinet of the present application.

[0049] Figure 8 is a schematic diagram of the structure of the mobile antenna assembly of the present application;

[0050] Fig. 9 It is a structural schematic diagram of the X-direction moving mechanism of the present application;

[0051] Fig.10 yes Fig. 9 A partial enlarged view of part A;

[0052] Fig.11 It is a structural schematic diagram of the Y-direction moving mechanism of the present application;

[0053] Fig.12 yes Fig.11 A partial enlarged view of part B.

[0054] Legend:

[0055] 1. Cabinet; 11. Item storage box;

[0056] 2. X-axis moving mechanism; 21. Moving crossbeam; 22. X-axis stepping motor; 23. X-axis synchronous belt; 24. First photoelectric tube; 25. First grating disk; 26. First slot type optical coupler; 27. X-axis linear guide; 28. First driving wheel; 29. ​​First driven wheel;

[0057] 3. Y-axis moving mechanism; 31. vertical beam; 32. Y-axis DC motor; 33. Y-axis synchronous belt; 34. second photoelectric tube; 35. second grating disk; 36. second slot-type optical coupler; 39. second driven wheel;

[0058] 4. Mobile antenna assembly; 41. RFID near-field antenna; 42. Antenna lining; 43. Antenna bracket;

[0059] 5', seal card cabinet; 51', fixed shaft; 52', carrier plate; 53', guide rail; 54', drawer box; 55', seal card; 506', RFID electronic tag; 56', RFID radio frequency antenna; 57', four-channel UHF reader / writer. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0061] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0062] Example:

[0063] The object storage cabinet scanning device of the present application is installed at the inner rear side of the object storage cabinet. The object storage cabinet includes a cabinet body, and the interior of the cabinet body is divided into multiple independent storage cavities from top to bottom by multiple horizontal partitions arranged horizontally, and multiple object storage boxes are placed in each storage cavity, and each object storage box is provided with an object storage cavity for accommodating multiple objects (such as documents, archives, etc.), and each object is affixed with an RFID electronic tag. The object storage cabinet scanning device includes: an X-direction moving mechanism, a Y-direction moving mechanism, a moving antenna assembly installed on the X-direction moving mechanism, and a control circuit.

[0064] See also Figure 6 to Figure 12 As shown, the above-mentioned Y-direction moving mechanism 3 includes:

[0065] A vertical beam 31 is vertically arranged between the top plate and the bottom plate of the cabinet 1, and the length of the vertical beam 31 is not greater than the height of the cabinet 1;

[0066] Y-direction DC motor 32, arranged at the bottom of vertical beam 31;

[0067] A Y-direction synchronous belt 33 is vertically arranged on one side of the vertical beam 31, and one end of the Y-direction synchronous belt 33 is provided with a second driving wheel arranged at the bottom of the vertical beam 31, and the second driving wheel is connected to the output shaft of the Y-direction DC motor 32, and the other end of the Y-direction synchronous belt 33 is provided with a second driven wheel 39 arranged at the top of the vertical beam 31; specifically, a second mounting seat can be respectively provided at both ends of the vertical beam 31, the second driving wheel is arranged on one of the second mounting seats, and the second driven wheel 39 is arranged on the other second mounting seat, and the Y-direction synchronous belt 33 is sleeved between the second driving pulley and the second driven wheel 39;

[0068] The above-mentioned X-direction moving mechanism 2 comprises:

[0069] The movable crossbeam 21 is arranged perpendicularly to the vertical beam 31, and the middle part of the movable crossbeam 21 is fixedly mounted on the Y-direction synchronous belt 33 of the Y-direction moving mechanism 3, and the length of the movable crossbeam 21 is not greater than the length of the cabinet 1;

[0070] An X-axis stepping motor 22 is arranged at one end of the moving beam 21;

[0071] An X-direction synchronous belt 23 is horizontally arranged on one side of the moving beam 21, and one end of the X-direction synchronous belt 23 is provided with a first driving wheel 28 arranged at one end of the moving beam 21. The first driving wheel 28 is connected to the output shaft of the X-direction stepping motor 22, and the other end of the X-direction synchronous belt 23 is provided with a first driven wheel 29 arranged at the other end of the moving beam 21; specifically, a first mounting seat can be arranged along each of the two ends of the moving beam 21, the first driving wheel 28 is arranged on one of the first mounting seats, the first driven wheel 29 is arranged on the other first mounting seat, and the X-direction synchronous belt 23 is sleeved between the first driving wheel 28 and the first driven wheel 29.

[0072] The above-mentioned mobile antenna assembly 4 is installed on the X-direction synchronous belt 23. The mobile antenna assembly 4 performs linear reciprocating motion in the horizontal direction along the mobile beam 21 under the drive of the X-direction synchronous belt 23. Figure 8 As shown, the mobile antenna assembly 4 carries an RFID near-field antenna 41 and a reader / writer, and the RFID near-field antenna 41 faces the item storage box 11 inside the cabinet 1. The RFID near-field antenna 41 is fixed on an antenna backing plate 42, the antenna backing plate 42 is fixed on one side of an antenna bracket 43, the reader / writer is fixed on the other side of the antenna bracket 43, and the first slide is fixed on the other side of the antenna bracket 43.

[0073] The above-mentioned control circuit (not shown in the figure) is electrically connected to the X-direction stepping motor 22, the Y-direction DC motor and the moving antenna assembly 4 respectively.

[0074] In order to ensure the smooth movement of the mobile antenna assembly 4, the mobile beam 21 is provided with an X-direction linear guide rail 27 (see Fig. 9 ), the X-direction linear guide 27 is parallel to the X-direction synchronous belt 23, a first slide is slidably provided on the X-direction linear guide 27, the mobile antenna assembly 4 is fixedly arranged on the first slide, and the mobile antenna assembly 4 is also fixedly connected to the X-direction synchronous belt 23, the rotation of the X-direction synchronous belt 23 drives the mobile antenna assembly 4 and the first slide to make linear reciprocating motion in the horizontal direction along the X-direction linear guide 27.

[0075] Similarly, in order to ensure the smooth movement of the moving beam 21, a Y-direction linear guide can also be set on the vertical beam 31. The Y-direction linear guide is parallel to the Y-direction synchronous belt 33. A second slide is slidably provided on the Y-direction linear guide. The second slide is also fixedly connected to the moving beam 21. The rotation of the Y-direction synchronous belt 33 drives the moving beam 21 and the second slide to perform linear reciprocating motion in the vertical direction along the Y-direction linear guide.

[0076] In a preferred embodiment, a first photoelectric tube 24 is respectively provided at the left and right ends of the moving beam 21, which is used to detect the position of the moving antenna assembly 4 at the two ends of the moving beam 21 in real time, and the first photoelectric tube 24 is electrically connected to the control circuit. When the moving antenna assembly 4 moves to the position of the first photoelectric tube 24 at the two ends of the moving beam 21, the first photoelectric tube 24 sends a signal to the control circuit, and the control circuit controls the X-direction stepping motor 22 to stop running, and the moving antenna assembly 4 stops moving accordingly to prevent it from hitting the transmission structure parts. Similarly, at least two second photoelectric tubes 34 are also provided on the vertical beam 31, at least one is arranged at the top of the vertical beam 31, and at least one is arranged at the bottom of the vertical beam 31. A plurality of the second photoelectric tubes 34 are arranged at equal intervals along the extension direction of the vertical beam 31, which are used to detect the position of the moving beam 21 moving in the vertical direction, and the second photoelectric tubes 34 are electrically connected to the control circuit. When the moving beam 21 moves to the position of the second photoelectric tube 34, the second photoelectric tube 34 sends a signal to the control circuit, and the control circuit controls the operation of the Y-direction DC motor 32.

[0077] See also Figures 9 to 12 As shown, in a preferred embodiment, one end of the moving cross beam 21 and one end of the vertical beam 31 are respectively provided with a first grating disk assembly and a second grating disk assembly, the first grating disk assembly and the second grating disk assembly both include a slotted optical coupler and a grating disk, the center of the grating disk is provided with an axial hole, the disk surface of the grating disk passes through its corresponding slotted optical coupler, and the receiving end of the slotted optical coupler is connected to the control circuit. Fig.10 As shown, the grating disk of the first grating disk assembly is the first grating disk 25, the slotted optical coupler of the first grating disk assembly is the first slotted optical coupler 26, the first grating disk 25 is fixedly sleeved on the axle of the first driven wheel 29 of the X-axis moving mechanism 2 through its shaft hole, and the first slotted optical coupler 26 is fixedly installed on the moving beam 21. Fig.11 As shown, the grating disk of the second grating disk assembly is the second grating disk 35, the slot-type optical coupler of the second grating disk assembly is the second slot-type optical coupler 36, the second grating disk 35 is fixedly mounted on the axle of the second driven wheel 39 of the Y-direction moving mechanism 3 through its axial hole, and the second slot-type optical coupler 36 is fixedly mounted on the vertical beam 31.

[0078] The above-mentioned slot-shaped optical coupler (the first slot-shaped optical coupler 26, the second slot-shaped optical coupler 36) is a commonly used optoelectronic device for position detection, which has a simple structure, reliable performance and low cost. One end is a light-emitting end, which can emit light when powered on, and the other end is a receiving end. There is a photosensitive element on the receiving end facing the light-emitting end. If there is no obstruction in the slot between the two ends, the receiving end will receive the light emitted by the light-emitting end and convert it into an electrical signal output, indicating that the optical path is connected; if there is an opaque object blocking the slot between the two ends, the receiving end cannot receive the light emitted by the light-emitting end and convert it into an electrical signal output, indicating that the optical path is blocked.

[0079] The above-mentioned grating disk (first grating disk 25, second grating disk 35) is made of opaque material, and a plurality of grating holes are arranged at equal intervals on the disk surface of the grating disk, so that the light path is blocked and conducted during the rotation process. When the grating disk rotates with the shaft, the disk surface of the grating disk passes through the slot of the slotted optical coupler, and the slotted optical coupler can detect the change of light transmission and light blocking, and output the electrical signal of light transmission to the control circuit. The control circuit detects the direction and speed of the shaft according to the change of the signal, which is used to accurately judge the movement of the X-direction synchronous belt 23 and / or the Y-direction synchronous belt 33, that is, accurately determine the position of the mobile antenna assembly 4.

[0080] The following briefly describes the working principle and working process of the object storage cabinet scanning device of this embodiment:

[0081] (I) Action process:

[0082] Multiple item storage boxes 11 are placed on each layer of the cabinet 1, and several items are placed in each item storage box 11, assuming that they are multiple documents, and each document is affixed with an RFID electronic tag. A mobile antenna assembly 4 is provided on the X-direction moving mechanism 2, and the mobile antenna assembly 4 is first moved to one end of the X-direction moving mechanism 2, and the X-direction moving mechanism 2 is moved to one end of the Y-direction moving mechanism 3. Then, the mobile antenna assembly 4 moves horizontally from the starting position through the X-direction synchronous belt 23, driven by the X-direction stepping motor 22, to detect the RFID electronic tags on the documents in each item storage box 11 of the cabinet layer where the X-direction moving mechanism is located one by one, until the mobile antenna assembly 4 moves to the other end of the X-direction moving mechanism 2, thus completing the inventory of the items in the item storage box 11 of the first layer of the item storage cabinet. Among them, as the mobile antenna assembly 4 moves horizontally, the RFID near-field antenna 41 on the mobile antenna assembly 4 emits electromagnetic waves, the RFID near-field antenna 41 reads the information of the RFID electronic tag on the document and feeds it back to the reader / writer, the reader / writer identifies and reads and writes the information, and sends the read object information to the control circuit, thereby obtaining the flow status of the document.

[0083] After the single-layer detection is completed, the control circuit controls the Y-direction DC motor 32 to drive the Y-direction synchronous belt 33, thereby driving the X-direction moving mechanism 2 to move upward to the position of each second photoelectric tube 34 on the vertical beam 31. The control circuit controls the Y-direction DC motor 32 to stop running, and the moving crossbar 21 stops the lifting movement. The control circuit then controls the X-direction stepping motor 22 to drive the X-direction synchronous belt 23, thereby driving the moving antenna assembly 4 to start horizontal movement, and repeating the above-mentioned single-layer inventory action.

[0084] The above operation is repeatedly performed, the X-direction moving mechanism 2 is moved upward layer by layer, and the surface is scanned and counted layer by layer, until the X-direction moving mechanism 2 moves to the other end of the Y-direction moving mechanism 3, and the inventory of the documents in all the article storage boxes 11 is completed.

[0085] (II) Judgment in place:

[0086] A first photoelectric tube 24 is respectively provided at the left and right ends of the moving beam 21, and the first photoelectric tube 24 is electrically connected to the control circuit. When the moving antenna assembly 4 moves to the position of the first photoelectric tube 24 at the two ends of the moving beam 21, the first photoelectric tube 24 sends a first signal to the control circuit, and the control circuit controls the X-axis stepping motor 22 to stop running to prevent it from hitting the transmission structure parts at the two ends of the moving beam 21 (such as the first driving wheel 28, the first driven wheel 29, the first grating disk 25, the first slotted optical coupler 26, etc.).

[0087] The vertical beam 31 is provided with a plurality of second photoelectric tubes 34, one of which is arranged at the top end of the vertical beam 31, and one is arranged at the bottom end of the vertical beam 31, and the plurality of second photoelectric tubes 34 are arranged at equal intervals along the extension direction of the vertical beam 31. When the moving beam 21 of the X-axis moving mechanism 2 moves to the position of each second photoelectric tube 34, the second photoelectric tube 34 sends a second signal to the control circuit, and the control circuit controls the Y-axis DC motor 32 to stop running, and then the control circuit controls the X-axis stepping motor 22 to start running, and starts the scanning inventory of the current cabinet layer. Among them, when the X-axis moving mechanism 2 moves to the second photoelectric tubes 34 at the uppermost and lowermost ends of the Y-axis moving mechanism 3, the X-axis moving mechanism 2 stops moving to prevent it from hitting the top plate and the bottom plate of the cabinet body 1.

[0088] It should be noted that when scanning and counting one cabinet layer, the control circuit can drive the X-axis synchronous belt 23 to rotate, so that the mobile antenna assembly 4 moves from the first end of the moving beam 21 to the second end to perform the first scan. After the first scan is completed, the control circuit drives the X-axis synchronous belt 23 to rotate in the opposite direction, so that the mobile antenna assembly 4 returns from the second end of the moving beam 21 to the starting position to perform the second reverse scan. After the scanning and counting of one layer is completed, the control circuit controls the X-axis stepper motor 22 to stop running and controls the Y-axis DC motor 32 to start running, until the X-axis moving mechanism 2 moves to the position of the next second photoelectric tube 34, the Y-axis DC motor 32 stops running, and the X-axis stepper motor 22 continues to start running, and the scanning and counting of the next layer begins. Of course, the above process can also be that when scanning and counting a cabinet layer, the control circuit drives the rotation of the X-axis synchronous belt 23 to move the mobile antenna assembly 4 from the first end of the mobile beam 21 to the second end, that is, the scanning and counting of the current layer is completed, and the control circuit controls the X-axis stepper motor 22 to stop running, and controls the Y-axis DC motor 32 to start running, until the X-axis moving mechanism 2 moves to the position of the next second photoelectric tube 34, the Y-axis DC motor 32 stops running, and the X-axis stepper motor 22 continues to start running, so that the mobile antenna assembly 4 moves from the second end of the mobile beam 21 back to the first end, and the scanning and counting of the next layer is completed. That is, when taking inventory of each layer of the cabinet, it can be a two-way scan twice, and the control circuit obtains the two scanning results and performs subsequent processing to obtain the flow of files in this layer, or it can be a one-way scan, so that each layer is only scanned once. The specific setting can be made according to actual needs.

[0089] In summary, the present application uses an X-direction moving mechanism 2 and a Y-direction moving mechanism 3 to move a mobile antenna assembly 4 equipped with an RFID near-field antenna 41 and a reader / writer in the horizontal and vertical directions to multiple operating positions, wherein the mobile antenna assembly 4 is fixed on the X-direction synchronous belt 23 of the X-direction moving mechanism 2, and can move laterally along the length direction of the mobile crossbeam 21, and the X-direction moving mechanism 2 is fixed on the Y-direction moving mechanism 3, and can move longitudinally along the height direction of the vertical beam 31, thereby realizing scanning and inventorying of items placed in a single cabinet layer, multiple cabinet layers or an entire cabinet of the item storage box 11 of the item storage cabinet. The present application adopts a vertical beam 31 perpendicular to each other and a mobile crossbeam 21 installed on the vertical beam 31, which ensures the smooth movement of the entire scanning device and avoids the problems of difficulty in assembly and lack of accuracy caused by setting two guide rails in the X direction or the Y direction at the same time in the prior art. The present application simplifies the motion mechanism of the item storage cabinet, and its connection method is simple in structure, fast and efficient, reduces the failure rate of moving parts, and improves the efficiency of item inventorying. In addition, in the present application, only one mobile antenna assembly 4 is used to realize the automatic inventory of all items in the entire item storage cabinet, which greatly reduces the cost and avoids the signal interference between antennas caused by setting up multiple RFID radio frequency antennas at the same time.

[0090] The technical solution of the present application has the characteristics of intelligent control, high reliability, easy operation, economy and practicality, and does not occupy space in item storage cabinets. It saves the operation time of scanning and counting items in item storage cabinets, improves work efficiency, and has good market prospects.

[0091] The specific embodiments of the present invention are described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions made to the present invention are also within the scope of the present invention. Therefore, the equalization changes and modifications made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.

Claims

1. An item storage cabinet scanning device, the item storage cabinet comprising a cabinet body, the interior of the cabinet body is divided into a plurality of independent storage cavities from top to bottom by a plurality of horizontal partitions arranged horizontally, a plurality of item storage boxes are placed in each storage cavity, each item storage box is provided with an item accommodating cavity for accommodating a plurality of items, and each item is affixed with an RFID electronic tag; It is characterized in that The article storage cabinet scanning device comprises: an X-direction moving mechanism, a Y-direction moving mechanism, a moving antenna assembly installed on the X-direction moving mechanism, and a control circuit; wherein, The Y-direction moving mechanism comprises: A vertical beam is vertically arranged between the top plate and the bottom plate of the cabinet; A Y-axis DC motor is arranged at the bottom of the vertical beam; A Y-direction synchronous belt is vertically arranged on one side of the vertical beam, one end of which is provided with a second driving wheel arranged at the bottom of the vertical beam, the second driving wheel is connected to the output shaft of the Y-direction DC motor, and the other end of the Y-direction synchronous belt is provided with a second driven wheel arranged at the top of the vertical beam; The X-direction moving mechanism comprises: A movable crossbeam is arranged perpendicularly to the vertical beam, and the middle part of the movable crossbeam is fixedly installed on the Y-direction synchronous belt of the Y-direction moving mechanism; An X-axis stepping motor is arranged at one end of the moving beam; An X-direction synchronous belt is horizontally arranged on one side of the moving beam, one end of which is provided with a first driving wheel arranged at one end of the moving beam, the first driving wheel is connected to the output shaft of the X-direction stepping motor, and the other end of the X-direction synchronous belt is provided with a first driven wheel arranged at the other end of the moving beam; The mobile antenna assembly is installed on the X-direction synchronous belt, and the mobile antenna assembly performs linear reciprocating motion in the horizontal direction along the mobile beam under the drive of the X-direction synchronous belt; the mobile antenna assembly includes an RFID near-field antenna and a reader / writer, and the RFID near-field antenna faces the item storage box inside the cabinet; The control circuit is electrically connected to the X-direction stepping motor, the Y-direction DC motor and the mobile antenna assembly respectively; An X-direction linear guide is provided on the movable crossbeam, the X-direction linear guide is parallel to the X-direction synchronous belt, a first slide is slidably provided on the X-direction linear guide, the movable antenna assembly is fixedly arranged on the first slide, and the movable antenna assembly is also fixedly connected to the X-direction synchronous belt, and the rotation of the X-direction synchronous belt drives the movable antenna assembly and the first slide to perform linear reciprocating motion in the horizontal direction along the X-direction linear guide; A first grating disk assembly and a second grating disk assembly are respectively provided at one end of the movable crossbeam and one end of the vertical beam, and the first grating disk assembly and the second grating disk assembly both include a slot-type optical coupler and a grating disk, an axial hole is provided at the center of the grating disk, the disk surface of the grating disk passes through its corresponding slot-type optical coupler, and the receiving end of the slot-type optical coupler is connected to the control circuit; wherein, the grating disk of the first grating disk assembly is fixedly sleeved on the axle of the first driven wheel of the X-direction moving mechanism through its axial hole, and the grating disk of the second grating disk assembly is fixedly sleeved on the axle of the second driven wheel of the Y-direction moving mechanism through its axial hole, the slot-type optical coupler of the first grating assembly is fixedly mounted on the movable crossbeam, and the slot-type optical coupler of the second grating assembly is fixedly mounted on the vertical beam.

2. An article storage cabinet scanning device according to claim 1, It is characterized in that The vertical beam is provided with a Y-direction linear guide rail, and the Y-direction linear guide rail is parallel to the Y-direction synchronous belt. A second slide is slidably provided on the Y-direction linear guide rail, and the second slide is also fixedly connected to the moving crossbeam. The rotation of the Y-direction synchronous belt drives the moving crossbeam and the second slide to perform linear reciprocating motion in the vertical direction along the Y-direction linear guide rail.

3. The object storage cabinet scanning device according to claim 1, It is characterized in that A first phototube is respectively provided at the left and right ends of the movable beam, for real-time detection of the in-place status of the movable antenna assembly at the two ends of the movable beam, and the first phototubes are electrically connected to the control circuit; when the movable antenna assembly moves to the position of the first phototubes at the two ends, the first phototubes send a first signal to the control circuit, and the control circuit controls the operation of the X-axis stepping motor.

4. An article storage cabinet scanning device according to claim 1 or 3, It is characterized in that At least two second phototubes are also provided on the vertical beam, at least one is arranged at the top end of the vertical beam, and at least one is arranged at the bottom end of the vertical beam. Multiple second phototubes are arranged at equal intervals along the extension direction of the vertical beam, and are used to detect the position of the moving beam in the vertical direction. The second phototubes are all electrically connected to the control circuit; when the moving beam moves to the position of the second phototube, the second phototube sends a second signal to the control circuit, and the control circuit controls the operation of the Y-axis DC motor.

5. The object storage cabinet scanning device according to claim 1, It is characterized in that The length of the movable cross beam is not greater than the length of the cabinet body, and the length of the vertical beam is not greater than the height of the cabinet body.

6. The object storage cabinet scanning device according to claim 1, It is characterized in that A first mounting seat is disposed at each end of the movable crossbeam, the first driving wheel is disposed on one of the first mounting seats, the first driven wheel is disposed on the other of the first mounting seats, and the X-direction synchronous belt is sleeved between the first driving wheel and the first driven wheel; and / or A second mounting seat is respectively arranged at both ends of the vertical beam, the second driving wheel is arranged on one of the second mounting seats, the second driven wheel is arranged on the other second mounting seat, and the Y-direction synchronous belt is sleeved between the second driving wheel and the second driven wheel.

7. A scanning method of the object storage cabinet scanning device according to claim 1, It is characterized in that include: Move the mobile antenna assembly equipped with the RFID near-field antenna and the reader to one end of the X-direction moving mechanism, with the RFID near-field antenna on the mobile antenna assembly facing the item storage box inside the cabinet; Move the X-direction moving mechanism to one end of the Y-direction moving mechanism; The X-axis stepper motor rotates under the control of the control circuit, driving the X-axis synchronous belt to rotate, thereby driving the mobile antenna assembly to move linearly in the horizontal direction from the starting position, detecting the RFID electronic tags on the items in each item storage box on the cabinet layer where the X-axis moving mechanism is located one by one, and feeding back to the reader / writer, the reader / writer identifies and reads and writes the item information, and sends the read item information to the control circuit until the mobile antenna assembly moves to the other end of the X-axis moving mechanism, thus completing the scanning inventory of the items in the item storage box on the first layer of the item storage cabinet; After the single-layer detection is completed, the Y-axis DC motor drives the Y-axis synchronous belt, which in turn drives the X-axis moving mechanism to move upward a preset distance, and the X-axis stepping motor is started again to carry out the inventory of the items in the item storage box of the next cabinet layer; Continue to move the X-direction moving mechanism upward according to the preset distance, scan and count the items layer by layer, until the X-direction moving mechanism moves to the other end of the Y-direction moving mechanism, and the items in all the item storage boxes are counted.

8. The scanning method of the object storage cabinet scanning device according to claim 7, It is characterized in that A first photoelectric tube is provided at each of the left and right ends of the movable horizontal beam; at least two second photoelectric tubes are provided on the vertical beam, at least one is provided at the top end of the vertical beam, and at least one is provided at the bottom end of the vertical beam, and a plurality of the second photoelectric tubes are provided at equal intervals along the extension direction of the vertical beam; the first photoelectric tube and the second photoelectric tube are both electrically connected to the control circuit; the scanning method further comprises: When the mobile antenna assembly moves to the position of the first photoelectric tube at both ends of the mobile beam, the first photoelectric tube sends a first signal to the control circuit, and the control circuit controls the X-axis stepping motor to stop running to prevent it from hitting the transmission structure parts at both ends of the mobile beam; When the movable horizontal beam moves to the position of the second photoelectric tubes at both ends of the vertical beam, the second photoelectric tubes send a second signal to the control circuit, and the control circuit controls the Y-axis DC motor to stop running to prevent it from hitting the top plate or bottom plate of the cabinet.

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