Automatic article distribution cabinet for nuclear power plant

Abstract

The invention discloses an automatic article distribution cabinet for a nuclear power plant. The automatic article distribution cabinet comprises a cabinet body, a camera arranged on the cabinet body, a control computer, a sliding door, a fingerprint instrument and a card reading and code scanning instrument, the three-dimensional storage bin, the PLC, the servo motor and the rotating table are arranged in the cabinet body; wherein the three-dimensional storage bin is installed on the rotating table, and the servo motor is used for driving the rotating table to rotate.

Description

Technical Field

[0001] The invention relates to the field of article distribution, and in particular to an automatic article distribution cabinet for a nuclear power plant. Background Art

[0002] With the requirements of digital development of nuclear power plants, the self-service and intelligent distribution of personal items has become a trend. At present, the distribution cabinets of nuclear power plants usually adopt storage format cabinets, combined with portrait recognition, barcode recognition and other methods to enable personnel to self-service to retrieve items. Common self-service distribution items include but are not limited to personal dosimeters and wireless handheld terminals.

[0003] There are two main types of self-service distribution cabinets in existing nuclear power plants:

[0004] One is a locker format, which adopts a storage compartment / cabinet door / electric lock structure, that is, each storage compartment needs to correspond to a cabinet door separately, and the cabinet door is opened and closed by an electric lock, and the retrieval and return of stored items are controlled by the cabinet door opening permission control.

[0005] Another method is to use a card connection method, that is, multiple storage compartments correspond to one or several cabinet doors, and the items stored in the distribution cabinet need to be bound to the storage compartments through a specific card interface or card connector, and the retrieval and return of the stored items can be controlled by controlling the opening authority of the card interface or card connector.

[0006] In actual application, both methods have obvious shortcomings: the first method has a low degree of integration, low utilization of storage space, frequent opening and closing of cabinet doors, resulting in wear and deformation and inability to close, and the electric lock is easily damaged after long-term use, resulting in a large workload for repair and maintenance. The second method can only store items with specific card interfaces, or items need to be bound to specific card connectors, which cannot meet the needs of flexible storage of items in various forms. Usually, the interface control of the card connector is also controlled by an electric lock, which requires a large workload for repair and maintenance. In addition, specific card connectors may fall off structurally, and there is a safety hazard of foreign matter in the plant during application in nuclear power plants. Summary of the invention

[0007] To this end, the present invention proposes an automatic article distribution cabinet for nuclear power plants, which, through a unique structural design, can combine the advantages of the above two lockers and better solve the above problems. Furthermore, a more reliable motor control is used to replace the electric control lock for article retrieval control, which significantly reduces the probability of failure, improves the reliability of the equipment and reduces the workload of repair and maintenance.

[0008] In order to achieve the purpose of the present invention, the following technical solutions are adopted:

[0009] An automatic article distribution cabinet for a nuclear power plant comprises a cabinet body, a camera, a control computer, a sliding door, a fingerprint reader, and a card reader and code scanner arranged on the cabinet body; and a three-dimensional PLC, a storage bin, a servo motor, and a rotating table arranged in the cabinet body; wherein the three-dimensional storage bin is installed on the rotating table, and the servo motor is used to drive the rotating table to rotate.

[0010] The automatic article distribution cabinet for a nuclear power plant, wherein: the three-dimensional storage bin comprises multiple layers of fixed plates, and the multiple layers of fixed plates are arranged in parallel with a predetermined distance between the upper and lower layers.

[0011] The automatic article distribution cabinet for a nuclear power plant, wherein: the fixed plate includes a circle of multiple storage compartments, and the storage compartments are arranged on the outer circle of the fixed plate.

[0012] The automatic article distribution cabinet for a nuclear power plant, wherein: a baffle is installed at the opening of the storage compartment.

[0013] The automatic article distribution cabinet for a nuclear power plant, wherein: the sliding door is composed of multiple layers of sliding door units, and the distribution opening of each layer of sliding door units is directly opposite to the storage compartments of a certain column of the three-dimensional storage warehouse.

[0014] The automatic item distribution cabinet for a nuclear power plant, wherein: each layer of the sliding door unit includes a sliding door frame, and the sliding door frame is provided with a distribution port; the sliding door frame is mounted on the outer shell of the cabinet, a stepper motor is mounted on the sliding door frame, a gear is mounted on the output shaft of the stepper motor, a slide rail is mounted on each of the upper and lower ends of the sliding door frame, a baffle is slidably mounted on the slide rail, a rack is fixed on the baffle, and the rack is meshed with the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the automatic item distribution cabinet in a nuclear power plant;

[0016] Figure 2 This is a schematic diagram of the structure of the automatic item distribution cabinet in a nuclear power plant;

[0017] Figure 3 It is a schematic diagram of the structure of a three-dimensional storage warehouse;

[0018] Figure 4 It is a cross-sectional view of a three-dimensional storage bin;

[0019] Figure 5 This is a schematic diagram of the sliding door structure;

[0020] Figure 6 This is a schematic diagram of the sliding door structure;

[0021] Figure 7 It is a schematic diagram of the conductive slip ring structure;

[0022] Figure 8 This is a schematic diagram of the structure of the wireless charging detection module;

[0023] Fig. 9 This is a schematic diagram of the storage compartment installation structure;

[0024] Fig.10 Schematic diagram of camera structure;

[0025] Fig.11 This is a schematic diagram of the structure of the laser beam sensor;

[0026] Fig.12 It is a schematic diagram of the upper multi-dimensional adjustable angle bracket structure. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-12 , the specific implementation modes of the present invention are described in detail. The implementation modes are exemplary and are only used to explain the present invention, and should not be understood as limiting the present invention. Obviously, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0028] "One embodiment" or "some embodiments" described in this specification means that one or more embodiments of the present invention include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, in this specification, the terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0029] like Figure 1-12 As shown, the automatic article distribution cabinet of a nuclear power plant includes a cabinet body 1, a camera 2, a control computer 3, a sliding door 4, a fingerprint reader 5, a card reader 6, and a three-dimensional storage bin 7, a servo motor 8, and a rotating table 9 arranged in the cabinet body 1. The three-dimensional storage bin 7 is installed on the rotating table 9, and the servo motor 8 is used to drive the rotating table 9 to rotate.

[0030] When the staff needs to pick up the equipment, they click on the touch screen of the control computer 3 to receive the equipment, obtain the face photo through the camera 2, and / or the fingerprint device 5 picks up the fingerprint data, and the control computer 3 performs identity authentication based on the photo and / or fingerprint. After the identity authentication is completed, when the control computer 3 determines that the person has not received the equipment, it first controls the servo motor 8 to rotate through the PLC to drive the rotating table 9 to turn a row of storage compartments with items in the three-dimensional storage warehouse 7 to the sliding door 4 and align it, and then opens the sliding door corresponding to a storage compartment of the three-dimensional storage warehouse 7 with items through the PLC. After the staff takes the equipment away, the control computer 3 obtains the relevant sensor through the PLC to detect that the equipment has been taken away and the hand has left the sliding door, and finally controls the sliding door to close through the PLC to complete the personnel's equipment collection.

[0031] When the staff needs to return the equipment, they swipe the card / scan the borrowed equipment through the card reader / scanner 6. After the control computer 3 receives the scanning information from the card reader / scanner 6, it determines that the staff needs to return the equipment. First, the servo motor 8 drives the rotating table 9 to rotate through the PLC to turn a row of storage compartments in the three-dimensional storage warehouse 7 without stored items to the sliding door 4 and align them. Secondly, the PLC opens the sliding door corresponding to a storage compartment in the three-dimensional storage warehouse 7 without items. After the staff returns the equipment, the control computer 3 obtains the relevant sensor through the PLC to detect that the equipment has been returned and the hand has left the sliding door. Finally, the PLC controls the sliding door to close, completing the return of the staff and equipment.

[0032] The three-dimensional storage warehouse 7 is designed as a multi-layer structure. Figure 3 As shown, it includes multiple layers of fixing plates 73, which are arranged in parallel with a predetermined distance from top to bottom, and each fixing plate 73 is provided with a circle of multiple fixing holes evenly distributed on the circumference, and the fixing holes of the upper and lower fixing plates 73 are arranged oppositely, and the fixing rod 75 is inserted from the fixing hole of the fixing plate 73 of the lowest layer, and then inserted into the fixing hole of the fixing plate 73 of the upper layer layer by layer, until it is inserted into the fixing hole of the fixing plate 73 of the highest layer. Preferably, the fixing rod 75 is a screw rod, and the upper and lower surfaces of each layer of fixing plate 73 are locked by nuts threadedly connected to the fixing rod 75. The bottom of the fixing rod 75 is fixedly connected to the rotating table 9, and an optional method is that the bottom of the fixing rod 75 is inserted into the mounting hole opened in the rotating table 9, and the bottom of the fixing rod 75 is fixed and locked by a nut.

[0033] The rotating platform 9 is rotatably mounted on the fixed platform 76 through a bearing, the servo motor 8 is fixedly mounted on the fixed platform 76, and the output shaft of the servo motor 8 is connected to the rotating platform 9 through a driving mechanism. Thus, the servo motor 8 drives the rotating platform 9 to rotate and then drives the entire three-dimensional storage bin 7 to rotate.

[0034] A spindle is provided in the center of the three-dimensional storage bin 7. Figure 3 As shown, an upper conductive slip ring 74 is installed on the top of the spindle to conduct the power supply line and the signal communication line from the cabinet to the three-dimensional storage bin to prevent the cables in the cabinet from being entangled when the storage bin rotates.

[0035] like Figure 7As shown, the conductive slip ring 74 mainly includes a stator 701 and a rotor 707. The rotor 707 is installed at the center of the stator 701. A plurality of stator fixing plates 702 are fixed on the outer periphery of the stator 701. The fixing plates 702 are provided with mounting holes. The stator 701 and the top sheet metal of the cabinet 1 are fixed by screws through the stator fixing plates 702. The rotor 707 and the fixed shaft (mandrel) are fixed by screws through the rotor fixing holes 705. When the storage bin rotates, the rotor 707 follows the fixed shaft and rotates synchronously with the storage bin. The stator 701 and the cabinet shell remain in position, thereby realizing the line conduction of the storage compartment power supply and signal communication. The power supply line in the stator 701 outlet line 703 is connected to the power supply equipment in the cabinet, and the signal communication line is connected to the control computer; the rotor outlet line 706 is connected in series from the outlet of the wireless charging detection module of any storage compartment on the top layer of the storage bin. After each layer of series connection is completed, the series connection continues to the lower layer until all storage compartments are connected.

[0036] like Figure 3 As shown, the fixed plate 73 includes a circle of multiple storage compartments 71, and the storage compartments 71 are arranged on the outer circle of the fixed plate 73. Preferably, the openings of the storage compartments 71 are flush with the outer periphery of the fixed plate 73. The storage compartments 71 are fixed to the fixed plate 73 by screws, and the storage compartments 71 are evenly distributed on the circumference to fill the outer circle of the fixed plate 73. A baffle 72 is installed at the opening of the storage compartment 71 to prevent the three-dimensional storage bin 7 from throwing out the equipment when rotating.

[0037] A wireless charging detection module is built into the bottom of the storage compartment 81. Figure 8 , 9As shown, the wireless charging detection module includes a module body 84, a buckle 83 is fixed at the rear of the module body 84, and the two sides of the front of the module body 84 are slightly expanded outward to form a trumpet shape. The module body 84 is locked in the storage compartment 81 through the front geometric structure and the rear buckle. The front trumpet structure is consistent with the front opening shape of the storage compartment 81, which can limit its forward and backward movement. The buckle 83 is engaged with the buckle opened on the transparent acrylic plate 82 at the rear of the storage compartment to prevent the module body 84 from moving up and down. The wireless charging detection module is provided with a control circuit board 87, a wireless charging coil 86, and an NFC detection coil 85. The control circuit board 87 integrates components such as signal communication, wireless charging, NFC detection, DC step-down, current and voltage detection, and temperature detection. The wireless charging coil 86 can provide charging functions of different powers for different types of devices with wireless charging functions. At the same time, the NFC detection coil 85 transmits a detection signal to read the tag ID through the NFC sticker attached to the device to determine the detailed information of the device placed in the current storage compartment. The control circuit board 87 can detect the charging power and charging temperature of the device in real time; when the device is fully charged, over-current, over-voltage, over-temperature, under-current or under-voltage, the wireless charging can be automatically disconnected to avoid damage to the device; the control circuit board 87 communicates with the control computer 3 in real time through the control circuit board signal communication interface, and the control computer 3 can obtain detailed device information of all storage compartments in real time, including device type, storage compartment location of the device, charging status, power information, etc. The above information can be used to optimize the issuance rules, such as different personnel can automatically obtain different types of devices, and devices with sufficient power are issued first.

[0038] like Figure 4 As shown, an item detection sensor 78 is arranged on each layer in the middle of the three-dimensional storage warehouse in the direction facing the sliding door 4. The sensor is installed on the mandrel and detects whether there is equipment inside the storage compartment through a transparent plate 82 (such as an acrylic plate) behind each storage compartment 71 (81). The sensor is used to detect whether the items are placed in place when the equipment is returned or collected. The item detection sensor 78 can be, for example, an infrared detector. When there is equipment in the storage compartment, the time it takes for the infrared detector to emit a light spot to the storage compartment and detect the return light will change; or it will change from being able to receive the return light to not being able to receive the return light. This can determine whether there is equipment in the storage compartment that can be distributed, and whether the equipment is put back in place when it is returned.

[0039] like Figure 3As shown, an origin sensor 77 is provided on the fixed platform 76, which is used when the PLC is initialized and when the equipment is reset regularly, and is used to eliminate the problem that the storage compartment 71 is not aligned with the sliding door 4 due to the accumulated error caused by the long-term rotation of the three-dimensional storage warehouse. Since the servo motor will have errors when running for a long time, it may cause a certain column of the three-dimensional warehouse to be unable to align with the sliding door, so regular calibration is required. The calibration method is that the PLC controller enters the calibration mode and controls the rotation of the three-dimensional warehouse. When the origin sensor 77 detects the metal sheet on the three-dimensional warehouse, the PLC determines that it has reached the zero point and sets this point as the zero point of the servo motor. At this time, the error offset of the servo motor can be eliminated, and the calibration process is completed.

[0040] like Figure 5 As shown, the sliding door 4 is composed of multiple layers of sliding door units, and the dispensing port 47 of each layer of sliding door units is directly opposite to the storage compartments 71 of a certain column of the three-dimensional storage bin 7. Each layer of sliding door units includes a sliding door frame 44, and the sliding door frame 44 is provided with a dispensing port 47; the sliding door frame 44 is installed on the outer shell of the cabinet 1, and a stepper motor 43 is installed on the sliding door frame 44, and a gear is installed on the output shaft of the stepper motor. A slide rail 45 is installed at each of the upper and lower ends of the sliding door frame 44, and a baffle 45 is slidably installed on the slide rail 45, and a rack 41 is fixed on the baffle 45, and the rack is meshed with the gear.

[0041] The rack 41 fixed on the baffle 45 is driven to move left and right by the rotation of the stepper motor 43, so that the baffle 45 moves left / right along the slide rail 45 to cover the dispensing port 47 or expose the dispensing port 47. The opening and closing position of the door is controlled by the limit sensor 42 to avoid overloading the stepper motor. The anti-pinch sensor 46 fixed on the sliding door frame 44 is used to detect whether there is a hand taking the device back from the dispensing port to avoid the sliding door pinching the hand. The object placement sensor 47 fixed on the sliding door frame 44 is used to detect whether the device is completely placed in the storage compartment 71 to avoid the device colliding or slipping when the three-dimensional storage bin 7 rotates, causing damage to the device and machinery.

[0042] The sliding door frame 44 is fixedly connected to the sliding door fixing frame 48. Figure 6 As shown, the sliding door fixing bracket 48 is fixed to the cabinet body.

[0043] like Fig.10 As shown, the specific structure of the camera of this patent is installed in the cabinet 1 and is used to adjust the angle of the camera sensor, such as Fig.10As shown, the camera includes a fixed bracket 201, a rotating bracket 203, a circuit board 204, and a camera sensor 207. The fixed bracket 201 is installed in the cabinet 1, the rotating bracket 203 is rotatably installed on the fixed bracket 201, the circuit board 204 is installed on the rotating bracket 203, and the camera sensor 207 is installed on the circuit board 204. A circular glass window with a diameter of 10-20 mm is opened on the cabinet 1. The camera sensor 207 is facing the glass window. The diameter of the glass window is larger than the diameter of the camera sensor 207, so that when the camera sensor 207 is at different angles, it can collect external images through the glass window.

[0044] The fixed bracket 201 includes a back plate 201 and a door plate 208. The door plate 208 is installed at the lower part of the back plate 201. The back plate 201 has two mounting holes for fixing the fixed bracket 201 to the inner wall of the cabinet 1 with screws. The rotating bracket 203 is a U-shaped plate, and the two arms are respectively installed on the two side walls of the door plate 208. The two side walls of the door plate are respectively provided with two mounting holes distributed up and down, wherein the upper hole is an arc hole, or the lower hole is an arc hole. The two arms of the rotating bracket 203 are provided with two corresponding upper and lower mounting holes. When installing, screws are inserted into the mounting holes of the rotating bracket 203 and the door plate 208. The rotating bracket 203 can be rotated by swinging the bolts in the arc hole. Then, the position of the rotating bracket 203 can be fixed by tightening with a nut, and the angle of the camera sensor 207 can be adjusted to provide the required shooting angle.

[0045] like Fig.11 As shown, a pair of laser transmitting lasers are installed above and below the three-dimensional storage bin 7. The laser sensor is located in the gap between the three-dimensional storage bin 7 and the release opening of the sliding door 4, and is used to detect whether there are items that are not placed in the storage compartment or whether there are item hanging ropes that are not placed in place, which may damage the stored items or equipment when the three-dimensional storage bin rotates. By combining with the item placement sensor 47, multi-angle detection can be achieved left, right, up, and down to avoid missed detection.

[0046] The laser beam sensor is divided into two parts, the upper and lower parts, which are respectively installed on the top of the cabinet 1 and the lower part of the cabinet 1 below the three-dimensional storage bin 7 through a multi-dimensional adjustable angle bracket. Fig.12As shown, the upper mounting structure is used as an example for explanation (the lower mounting structure is similar thereto), the three-dimensional adjustable angle bracket of the upper laser beam sensor includes a pair of cabinet fixing frames 102, which are respectively installed on the cabinet panel 101, and the cabinet back panel has two strip holes 107, and the mounting bolts pass through the mounting and strip holes 107 of the cabinet fixing frames 102. By adjusting the position of the mounting bolts in the strip holes 107, the left and right mounting positions of the cabinet fixing frames 102 can be adjusted, thereby adjusting the left and right mounting positions of the laser beam sensor; each cabinet fixing frame 102 is provided with a pair of clamping arms, a clamping bolt passes through the oppositely arranged through holes on the two clamping arms, and a notch is provided on the opposite surfaces of a clamping arm for accommodating a vertical rod 103, and the vertical rod 103 is installed between the clamping arms. Before the clamping arms are clamped, the up and down positions of the vertical rod 103 can be adjusted, thereby adjusting The upper and lower installation positions of the laser beam sensor are adjusted, and the position of the vertical rod 103 is fixed by tightening the nuts of the clamping bolts; a retaining member 104 is fixed on each vertical rod 103, and the retaining member 104 is connected to a cross bar 105, and the mounting plate 106 is sleeved on the cross bar 105 through a sleeve hole with a clamping seam at the lower part, and an opening is opened on the front edge of the sleeve hole and the clamping bolt is passed through, and the mounting plate 106 can move forward and backward along the cross bar 105. After it is in place, the clamping seam is clamped by tightening the nuts of the clamping bolts to fix the front and rear positions of the mounting plate 106; the laser beam sensor is installed between the two mounting plates 106, and the two mounting plates 106 are provided with arc-shaped mounting holes. The mounting posts at both ends of the laser beam sensor are inserted into the arc-shaped mounting holes and can slide in the arc-shaped mounting holes to adjust the angle. After the angle adjustment is completed, it can be locked by locking nuts.

[0047] The two laser sensors installed on the upper and lower multi-dimensional adjustable angle brackets are used to increase the detection width and improve the detection rate. The multi-dimensional adjustable angle bracket can be adjusted up and down, left and right, front and back to achieve the alignment of the upper and lower sets of laser sensors.

[0048] The automated nuclear power plant article distribution cabinet of the present invention can effectively reduce the failure rate, avoid the possibility of personnel returning items to the wrong location, improve the advancement of article distribution, and effectively reduce the workload of management personnel.

[0049] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An automatic article distribution cabinet for a nuclear power plant, characterized in that: It includes a cabinet, a camera, a control computer, a sliding door, a fingerprint reader, and a card reader and barcode scanner arranged on the cabinet; and a three-dimensional storage bin, a servo motor, and a rotating table arranged in the cabinet; The three-dimensional storage bin is installed on a rotating table, and the servo motor is used to drive the rotating table to rotate.

2. The automatic article distribution cabinet for nuclear power plants according to claim 1, characterized in that: The three-dimensional storage bin comprises multiple layers of fixing plates, which are arranged in parallel with a predetermined distance above and below.

3. The automatic article distribution cabinet for nuclear power plants according to claim 2, characterized in that: The fixed plate comprises a circle of a plurality of storage compartments, and the storage compartments are arranged on the outer circle of the fixed plate.

4. The automatic article distribution cabinet for nuclear power plants according to claim 3 is characterized in that: A baffle is installed at the storage compartment opening.

5. The automatic article distribution cabinet for nuclear power plants according to claim 1, characterized in that: The sliding door is composed of multiple layers of sliding door units, and the distribution opening of each layer of sliding door units is directly opposite to the storage compartments of a certain column of the three-dimensional storage warehouse.

6. The automatic article distribution cabinet for nuclear power plants according to claim 5, characterized in that: Each layer of the sliding door unit includes a sliding door frame, which is provided with a release port; the sliding door frame is installed on the outer shell of the cabinet, a stepper motor is installed on the sliding door frame, a gear is installed on the output shaft of the stepper motor, a slide rail is installed at each of the upper and lower ends of the sliding door frame, a baffle is slidably installed on the slide rail, a rack is fixed on the baffle, and the rack is meshed with the gear.

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