Identification system of semiconductor electronic shelf

Abstract

The utility model provides an identification system of a semiconductor electronic shelf, which is applied to the technical field of electronic shelves and radio frequency identification, and is characterized in that at least one signal transceiver is arranged in each grid, and a control module in an identification controller is connected with a plurality of antenna modules, so that the control module can control the start and stop of the plurality of antenna modules, and the identification accuracy of the semiconductor electronic shelf is improved. The antenna module is used for identifying the label when the goods are stored in the corresponding grid position, so that the identification accuracy and the identification efficiency of the labels for identifying the goods in different storage positions and / or different models on the electronic goods shelf can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electronic shelves and RFID technology, in particular to a recognition system of a semiconductor electronic shelf. BACKGROUND

[0002] In the field of semiconductors, it is necessary to efficiently and accurately identify and track goods stored on shelves. The traditional identification method has been unable to meet the high efficiency and low cost requirements of modern production. Therefore, using RFID (Radio Frequency Identification) technology to realize intelligent identification of goods has become an effective solution.

[0003] In the prior art, for a shelf for storing a plurality of goods, an RFID reader is used to read the plurality of goods on the shelf, and the RFID reader has poor reading accuracy for tag information of goods in different storage positions on the shelf.

[0004] Therefore, there is a need for a new technical solution. CONTENT OF THE INVENTION

[0005] Therefore, the recognition system of a semiconductor electronic shelf provided by the embodiments of the present application is provided.

[0006] The embodiments of the present application provide the following technical solutions:

[0007] The recognition system of a semiconductor electronic shelf provided by the embodiments of the present application, the electronic shelf includes a shelf body and a plurality of placement layers fixed in the shelf body, each placement layer is provided with at least one storage unit, the storage unit is used to store goods with a tag, and the tag has attribute information.

[0008] The recognition system includes a signal transceiver and a reading controller arranged on the electronic shelf.

[0009] Each of the storage units is provided with at least one signal transceiver.

[0010] The signal transceiver includes an antenna module, the antenna module is used to send a first signal to the tag and receive a second signal returned from the tag and carrying the attribute information.

[0011] The reading controller includes a control module, the control module is electrically connected to the antenna module and is used to control the start and stop of the antenna module.

[0012] Preferably, the signal transceiver further includes an induction module and a first circuit board.

[0013] The goods are stored in the corresponding storage unit to trigger the induction module.

[0014] The control module is electrically connected to the sensing module, and the control module is configured to control the corresponding antenna module to start when the sensing module is triggered.

[0015] The antenna module and the sensing module are integrated on the first circuit board.

[0016] Preferably, the signal reading controller further comprises a signal reading module and a second circuit board.

[0017] The control module is electrically connected to the signal reading module, the signal reading module is electrically connected to the antenna module, and the signal reading module is configured to read the second signal.

[0018] The control module and the signal reading module are integrated on the second circuit board.

[0019] Alternatively,

[0020] The signal transceiver further comprises a reading chip module and a first circuit board.

[0021] The control module is electrically connected to the reading chip module, the reading chip module is electrically connected to the antenna module, and the reading chip module is configured to read the second signal.

[0022] The antenna module and the reading chip module are integrated on the first circuit board.

[0023] Preferably, the signal reading controller further comprises an antenna switching circuit.

[0024] The control module is electrically connected to the antenna switching circuit, the antenna switching circuit is electrically connected to the antenna module, and the antenna switching circuit is configured to perform level conversion and control the circuit on-off switching of the antenna module.

[0025] The antenna switching circuit is integrated on the second circuit board.

[0026] Preferably, the signal transceiver further comprises an indicator light module and a first circuit board.

[0027] The control module is electrically connected to the indicator light module in the plurality of signal transceivers, and the indicator light module is configured to indicate the storage state of the goods.

[0028] The indicator light module and the antenna module are integrated on the first circuit board.

[0029] And / or,

[0030] The signal reading controller further comprises a buzzer interface and a second circuit board.

[0031] The control module is electrically connected with the buzzer interface, the buzzer interface is electrically connected with a buzzer, and the control module controls the buzzer to indicate the state of the goods through the buzzer interface.

[0032] The buzzer interface and the control module are integrated on the second circuit board.

[0033] Preferably, the signal transceiver further comprises a first interface module and a first circuit board, and the reading controller further comprises a plurality of second interface modules and a second circuit board;

[0034] The number of the second interface modules corresponds to the number of the signal transceivers, and each second interface module is electrically connected with a first interface module in correspondence;

[0035] The first interface module and the antenna module are integrated on the first circuit board, and the second interface module and the control module are integrated on the second circuit board.

[0036] Preferably, the goods with labels are stored on the placement layer, and the goods are wafer transport boxes;

[0037] The signal transceiver arranged at each storage unit comprises a first signal transceiver and / or a second signal transceiver;

[0038] The first signal transceiver is arranged between the bottom end of the goods and the placement layer, and the antenna module in the first signal transceiver is used for transmitting a first signal to the label at the bottom end and / or the side end of the goods and receiving a second signal returned from the label at the bottom end and / or the side end of the goods and carrying the attribute information;

[0039] The second signal transceiver is arranged between the top end of the goods and the placement layer, and the antenna module in the second signal transceiver is used for transmitting a first signal to the label at the top end of the goods and receiving a second signal returned from the label at the top end of the goods and carrying the attribute information.

[0040] Preferably, each signal transceiver has an antenna cover, wherein the signal transceiver is arranged in the antenna cover and is mounted on the electronic shelf through the antenna cover;

[0041] The antenna cover comprises a first antenna cover for mounting the first signal transceiver and a second antenna cover for mounting the second signal transceiver;

[0042] The bottom end of the first antenna cover shell is circumferentially connected with a plurality of first connecting pieces, each of the first connecting pieces comprises a main body part and a limiting part, one end of the main body part is connected to the bottom end of the first antenna cover shell, the other end of the main body part is provided with the limiting part, so that a limiting area is formed between the first connecting piece and the bottom end of the first antenna cover shell;

[0043] The top end of the second antenna cover shell is connected with a second connecting piece, each of the second connecting pieces comprises a connecting plate, a plurality of suspension parts and a plurality of hook-shaped parts, the connecting plate is connected to the top surface of the second antenna cover shell, a plurality of the suspension parts are arranged on the connecting plate along the circumference of the connecting plate, one end of each of the suspension parts is connected to the connecting plate, and the other end of the suspension part is connected to the hook-shaped part.

[0044] Preferably, the placement layer is arranged in multiple layers on the frame body, the frame body is further provided with a mounting layer above the storage unit of the top layer, and the width of the mounting layer is smaller than the width of the placement layer; the storage unit of the top layer corresponds to the second antenna cover shell mounted below the mounting layer through the second connecting piece;

[0045] The placement layer and the mounting layer each comprise a layer frame, a plurality of first connecting rods fixedly arranged in parallel in the layer frame, and a plurality of second connecting rods fixedly arranged in parallel in the layer frame, and the first connecting rods and the second connecting rods are arranged in cross;

[0046] The main body part of each of the first connecting pieces abuts against the corresponding first connecting rod and the second connecting rod, so that the corresponding first connecting rod and the second connecting rod are located in the limiting area, and the first antenna cover shell is mounted above the placement layer;

[0047] The plurality of hook-shaped parts of each of the second connecting pieces hook the corresponding second connecting rod, and each of the second antenna cover shells is limitingly mounted below the corresponding placement layer and the mounting layer.

[0048] Preferably, the reading controller further comprises a data conversion module, a third interface module, a power module and a second circuit board;

[0049] The control module is electrically connected to the data conversion module, the data conversion module is electrically connected to the third interface module, and the third interface module is electrically connected to the main controller;

[0050] The power module is electrically connected to a powered Ethernet power supply module;

[0051] The data conversion module, the third interface module, the power module and the control module are integrated on the second circuit board;

[0052] The label identification system further comprises a main controller, a switch and a service system server; the identification controller is electrically connected to the main controller, the main controller is electrically connected to the switch, and the switch is connected to the service system server.

[0053] The label identification system further comprises an electric control box installed below the bottom end placement layer in the electronic shelf, and the identification controller and the main controller are located in the electric control box.

[0054] Compared with the prior art, the above at least one technical solution adopted by the embodiments of the present application can achieve at least the following beneficial effects:

[0055] The present application sets at least one signal transceiver in each storage unit, and the control module in the identification controller is connected to the antenna module in the plurality of signal transceivers, so that the control module can control the start and stop of the plurality of antenna modules, and the antenna module in the signal transceiver can identify the label of the stored goods in the corresponding storage unit, which is beneficial to improve the identification accuracy and efficiency of the label of the goods in different storage positions and / or different models of the electronic shelf, and helps to actively start the antenna module corresponding to the storage unit when the goods are placed in the storage unit, and the antenna module identifies the label of the goods in the storage unit. BRIEF DESCRIPTION OF DRAWINGS

[0056] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0057] Figure 1 It is a structural schematic diagram of the RFID reader in the prior art;

[0058] Figure 2 It is an Erack structural diagram in the electronic shelf in the present application;

[0059] Figure 3 It is a schematic diagram of the position relationship between the antenna and the wafer transport box at one position unit in the present application;

[0060] Figure 4 It is a schematic diagram of one label position on the wafer transport box;

[0061] Figure 5 It is a schematic diagram of another label position on the wafer transport box;

[0062] Figure 6 It is a schematic diagram of the overall architecture of the present application;

[0063] Figure 7 The first hardware architecture diagram of the reading controller and signal transceiver of the present application;

[0064] Figure 8 The second hardware architecture diagram of the reading controller and signal transceiver of the present application;

[0065] Figure 9 The first antenna cover and the first connecting member thereon of the present application;

[0066] Figure 10 The second antenna cover and the second connecting member thereon of the present application;

[0067] Figure 11 The side view of the second antenna cover and the second connecting member thereon of the present application;

[0068] Figure 12 The installation diagram of the first connecting member on the first antenna cover and the second connecting member on the second antenna cover of the present application;

[0069] Figure 13 The overall diagram of the electronic shelf label identification system of the present application;

[0070] Figure 14 The diagram of 12 label distribution modes of the present application.

[0071] Reference signs: 10, support rod; 101, groove; 20, first connecting rod; 30, clamping sleeve assembly; 40, first antenna cover; 401, first connecting member; 402, indicator hole; 403, induction hole; 50, electric control box; 60, display screen; 70, second antenna cover; 701, second connecting member; 7011, hook portion; 7012, connecting plate; 7013, suspension portion; 80, wiring frame; 90, layer frame; 11, signal transceiver; 12, label; 13, reading controller; 14, second connecting rod. DETAILED DESCRIPTION

[0072] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0073] Following detailed description together with the accompanying drawings will provide those skilled in the art with further understanding of the application. It will be apparent to one of ordinary skill in the art that numerous modifications, both as to the details of construction and the productive methods, can be practiced without departing from the scope of the application. It is to be understood that the application is to be limited only by the scope of the claims hereinafter.

[0074] It is to be understood that the embodiments described hereinbelow within the scope of the appended claims. It will be apparent to one of ordinary skill in the art that aspects described herein can be implemented differently without departing from the scope of the present application. Based on the present application, one of ordinary skill in the art will understand that one aspect described herein can be implemented independently of any other aspect and that two or more of these aspects can be combined in various ways. For example, an apparatus can be implemented or a method can be practiced using any number of the aspects described herein. In addition, such an apparatus can be implemented or such a method can be practiced using other structure and / or functionality in addition to or other than one or more of the aspects described herein.

[0075] It is also to be understood that the drawings shown in the following embodiments are only to illustrate the basic concept of the present application, and only the components related to the present application are shown in the drawings, not the number, shape and size of the components when actually implemented. The actual implementation of each component may

[0076] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, one skilled in the art will understand that the application can be practiced without these specific details.

[0077] In a wafer factory, it is necessary to efficiently and accurately identify and track the wafer transport boxes stored on the shelves. The traditional identification method has been unable to meet the high efficiency and low cost requirements of modern production. Therefore, using RFID (Radio Frequency Identification) technology to realize intelligent identification of wafer transport boxes has become an effective solution.

[0078] In the prior art, such as Figure 1As shown, the RFID reader includes a processor and a radio frequency module, a power module, a storage unit, an SD card interface and a UART (Universal Asynchronous Receiver / Transmitter) electrically connected to the processor respectively, wherein the storage unit includes a RAM (Random Access Memory) and a Flash. The RFID reader inducts the proximity of the RFID tag by emitting a radio frequency signal of a specific frequency, and starts the identification process. When the passive RFID tag enters the effective working area of the reader, the electromagnetic wave emitted by the reader antenna will form an alternating magnetic field and electric field around the tag. This process is based on Faraday's law of electromagnetic induction, that is, a changing magnetic field will produce an electric field, and a changing electric field will produce a magnetic field. This interaction enables the tag's antenna to convert the received electromagnetic wave energy into direct current, thereby providing the required power supply for the chip in the tag. In this way, the passive RFID tag can be activated and start working, sending the data stored in the chip to the reader through the built-in antenna.

[0079] Therefore, the applicant has found, through in-depth research and improvement of RFID and electronic shelves for storing wafer FOUPs, that the shelf for storing wafer FOUPs needs more accurate and efficient control logic, which cannot be met by passive induction.

[0080] Based on this, the technical solutions provided by the embodiments of the present application are described below in conjunction with the drawings.

[0081] The embodiments of the present specification propose a recognition system of a semiconductor electronic shelf, as shown in Figure 2 、 Figure 3 and Figure 7 As shown, the electronic shelf includes a shelf body and a plurality of placement layers fixed in the shelf body, and at least one storage unit is arranged on each placement layer, the storage unit is used for storing goods with a tag 12, and the tag 12 has attribute information.

[0082] The tag recognition system includes a recognition controller 13 installed on the electronic shelf and a plurality of signal transceivers 11; each storage unit corresponds to at least one signal transceiver 11; the signal transceiver 11 includes an antenna module, the antenna module is used for sending a first signal to the tag 12 and receiving a second signal carrying attribute information returned from the tag 12, that is, the antenna module is used for identifying the tag 12 when the corresponding storage unit stores goods, so that the antenna module identifies the goods corresponding to the tag 12; the recognition controller 13 includes a control module, the control module is electrically connected to the antenna module in the plurality of signal transceivers 11, and the control module is used for controlling the start and stop of the antenna module.

[0083] For example, the goods can be wafer boxes, and the wafer boxes can be wafer transport boxes. The tag 12 can be a passive RFID tag 12; the reading controller 13 is also called a reader board, and the control module can be a microcontroller unit (MCU); the signal transceiver 11 is also called an RFID reading antenna, a reading antenna, and an RFID reader. The antenna module, also called an RFID antenna module, can be composed of a radio frequency antenna and a matching circuit; the antenna module is used to send a first signal to the tag 12 and receive a second signal returned from the tag 12 and carrying attribute information, for example, circumferentially radiated electromagnetic waves or radio frequency signals, wherein the attribute information includes but is not limited to wafer box identity information, process flow conditions, wafer box current positions, wafer piece states inside the wafer box, and other data information related to the wafer box and the wafer pieces inside the wafer box. The electronic shelf can be a multi-layer electronic shelf, and each layer can have multiple storage units. Each storage unit can be located in a space formed between any two placement layers and can accommodate a wafer box. In an embodiment, the multiple placement layers are vertically uniformly arranged and are four layers, and the multiple storage units on each placement layer are horizontally uniformly arranged and are four, forming a 4*4 (4 layers, 4 storage units per layer) shelf. Each storage unit can place a corresponding wafer transport box, and a signal transceiver (RFID antenna) is installed above each storage unit and between the placement layers, below each storage unit and between the placement layers. The signal transceiver is an integrated circuit board, and the signal transceiver can integrate an RFID antenna module, an infrared sensing module, and an indicator light module. The bottom placement layer of the electronic shelf can be provided with a reading controller, which is also an embedded integrated circuit board. The reading controller integrates an MCU module and a signal reading module. The reading controller 13 and the multiple signal transceivers 11 are electrically connected.

[0084] In an embodiment, as shown in Figure 7 and Figure 9 The signal transceiver 11 further includes a sensing module and a first circuit board. The sensing module is triggered when the goods are stored in the corresponding storage unit. The control module is electrically connected to the sensing modules in the multiple signal transceivers 11, and the control module is used to control the corresponding antenna module to start when the sensing module is triggered (the sensing module is used to sense whether the goods are stored in the corresponding storage unit, and the control module is used to control the corresponding antenna module to start when the goods are stored in the storage unit). The antenna module and the sensing module are integrated on the first circuit board.

[0085] For example, the sensing module is a photoelectric sensor or an infrared sensor, which is triggered when the goods are placed in the storage unit. After the sensing module is triggered, a signal is uploaded to the control module. The control module controls the antenna module to start, i.e., to send the first signal to the label of the wafer box and to receive the second signal carrying attribute information returned from the label. The label identification system further includes a plurality of antenna housings. The signal transceiver 11 is installed in the corresponding antenna housing and is installed on the electronic shelf through the antenna housing. An induction hole 403 exposing the sensing module is formed on the antenna housing near the surface where the goods in the corresponding storage unit are located.

[0086] In an embodiment, as shown in Figure 7 The reading controller 13 further includes a signal reading module (RFID driving IC) and a second circuit board. The control module is electrically connected to the signal reading module. The signal reading module is electrically connected to the antenna module, and is used to read the second signal (radio frequency signal) of the antenna module. The control module and the signal reading module are integrated on the second circuit board.

[0087] In an embodiment, as shown in Figure 7 、 Figure 8 The reading controller 13 further includes an antenna switching circuit. The control module is electrically connected to the antenna switching circuit. The antenna switching circuit is used for circuit on-off conversion of the antenna module. The number of interfaces of the antenna switching circuit is not less than the number of the antenna modules. The antenna switching circuit is integrated on the second circuit board.

[0088] For example, the number of interfaces of the antenna switching circuit is greater than or equal to the number of the antenna modules. The antenna switching circuit is electrically connected to the antenna module. The antenna switching circuit is used for level conversion and control of circuit on-off switching of the antenna module. The antenna switching circuit includes a level conversion circuit and a circuit for controlling circuit on-off switching of the antenna module.

[0089] When the antenna switching circuit includes a circuit for controlling circuit on-off switching of the antenna module (for example, a general circuit on-off switching circuit module), after the control module receives the signal of the sensing module that the goods have been placed in the storage unit, the antenna switching circuit is used to control the antenna module of the sensing module corresponding to the storage unit to start (i.e., to turn on the circuit of the antenna module to send the first signal and receive the second signal), or when the control module receives the signal of the sensing module that the goods have left the storage unit, the antenna switching circuit is used to control the antenna module of the sensing module corresponding to the storage unit to stop (to stop the antenna module from working when electromagnetic wave radiation is not needed, so as to reduce cost and increase efficiency).

[0090] When the antenna switching circuit includes a level conversion circuit (for example, a general level conversion circuit module), since the RFID signal is a radio frequency signal and is transmitted through the UART, if the transmission distance is too long, there will be a certain degree of attenuation, in order to minimize the influence of attenuation on the reading success rate, an antenna switching circuit is designed in the reading controller 13, which converts the UART into RS232 level through level conversion, thereby improving the stability of long-distance transmission. The antenna switching circuit includes multiple interfaces, for example, the antenna switching circuit is a 16-way 232 switching circuit, 16 interfaces are connected to 16 antenna modules, thereby controlling the on-off switching of the 16 antenna modules; for example, the shelf has 16 storage units, and each storage unit is provided with two signal transceivers, and the reading controller needs to be provided with at least 2 antenna switching circuits with 16 interfaces or at least 1 antenna switching circuit with 32 interfaces.

[0091] In the above embodiment, the antenna switching circuit is integrated on the second circuit board.

[0092] In an embodiment, as shown in Figure 8 the difference from the above embodiment is that the signal transceiver 11 further includes a reading chip module and a first circuit board, the control module is electrically connected to the reading chip module, the reading chip module is electrically connected to the antenna module, and the reading chip module is used for reading the second signal (the second signal returned from the tag 12 and carrying attribute information, the second signal is a radio frequency signal). Although the level conversion is used to reduce signal attenuation, there is still a problem of signal attenuation in long-distance transmission. Therefore, the RFID driving and reading circuit is moved from the reading controller 13 to the signal transceiver 11, that is, when the wafer carrier is placed in the shelf, the photoelectric sensor senses that an object is placed, the reading controller 13 reports the signal to the MCU of the reading controller 13, the MCU of the reading controller 13 drives the sensing module and the reading chip module on the signal transceiver 11 through the interface to work, completes the sensing and reading of the passive RFID, and then the signal transceiver 11 reports the reading result to the MCU of the reading controller 13, and the MCU reports to the main control board. The reading chip module can have similar functions as the signal reading module, and has an RFID driving and reading circuit. The antenna module and the reading chip module are integrated on the first circuit board.

[0093] In an embodiment, as shown in Figure 7 and Figure 9 the signal transceiver 11 further includes an indicator module and a first circuit board, the control module is electrically connected to the indicator module in the signal transceiver 11, and the indicator module is used for indicating the storage state of the goods, and the indicator module and the antenna module are integrated on the first circuit board.

[0094] For example, the indicator light module is an LED light, a three-color light. The reading controller 13 further comprises an indicator light driving module, and the control module is connected to the indicator light module through the electrical connection of the indicator light driving module; the indicator light driving module is an LED light driving module. The color of the indicator light can be configured as needed, for example, it displays green when the goods are placed in the storage unit, and it displays red when the goods are not placed in the storage unit, but the relevant color configuration can be configured according to the actual situation. The tag identification system further comprises a plurality of antenna housings, the signal transceiver 11 is installed in the corresponding antenna housing and is installed on the electronic shelf through the antenna housing, and the antenna housing is provided with an indicator light hole 402 exposing the indicator light module, and the indicator light hole 402 is arranged on the antenna housing close to the goods placement side, wherein the indicator light module and the antenna module are integrated on the first circuit board.

[0095] And / or, the reading controller 13 further comprises a buzzer interface, the control module is electrically connected to the buzzer interface and the second circuit board, the buzzer interface is used for electrically connecting the buzzer, and the control module controls the buzzer through the buzzer interface, and the buzzer sound of the buzzer is used to indicate the state of the goods; wherein the buzzer module and the control module are integrated on the second circuit board.

[0096] For example, the buzzer can be configured according to actual needs, which can be set to 1 second of buzzing when normal goods are placed, 3 seconds of buzzing when abnormal goods are placed; or only buzz when abnormal.

[0097] In an embodiment, as shown in Figure 7 , the signal transceiver 11 further comprises a first interface module and a first circuit board, and the reading controller 13 further comprises a second interface module and a second circuit board, the number of the second interface module corresponds to the number of the signal transceiver 11, and a second interface module is electrically connected to a corresponding first interface module. Wherein, the first interface module and the second interface module are RJ45 interfaces. The reading controller 13 can design the corresponding interface number according to the number of the storage unit and the number of the antenna required, for example, 16 storage units and 32 antennas, 32 interfaces will be set on the reading controller 13 for connecting 32 antennas; wherein the first interface module and the antenna module are integrated on the first circuit board, and the second interface module and the control module are integrated on the second circuit board.

[0098] In an embodiment, as shown in Figure 3 , Figure 4 and Figure 5As shown, the goods with the label 12 are placed on the placement layer, and the goods are wafer transport boxes; the signal transceiver 11 arranged at each storage unit includes a first signal transceiver and / or a second signal transceiver; the first signal transceiver is arranged between the lower end of the goods and the placement layer (the first signal transceiver is located below the corresponding storage unit), and the antenna module in the first signal transceiver is used to send a first signal to the label 12 at the bottom and / or side end of the goods, and receive a second signal returned from the label 12 at the bottom and / or side end of the goods and carrying attribute information; the second signal transceiver is arranged between the upper end of the goods and the placement layer (the second signal transceiver is located above the corresponding storage unit), and the antenna module of the second signal transceiver is used to send a first signal to the label 12 at the top end of the goods, and receive a second signal returned from the label 12 at the top end of the goods and carrying attribute information.

[0099] Specifically, as shown in Figure 14 , the positions of the labels 12 of the wafer boxes include twelve types: when the wafer boxes are loaded with wafer chips, at least include the form of directly carrying multiple wafer chips by a visible shell, the form of embedding a wafer boat in the visible shell and carrying multiple wafer chips in the wafer boat, so as to facilitate identification of wafer chip information, the labels 12 for detection can be arranged at the upper end, side end and lower end of the visible shell; when the wafer boat is embedded in the visible shell, the labels 12 for detection can be arranged at the upper end, lower end and side end of the wafer boat, or the labels 12 for detection can be arranged on the visible shell and the wafer boat respectively; when the wafer boat is embedded in the visible shell and the labels 12 for detection are arranged on the visible shell and the wafer boat respectively, the labels 12 on the visible shell and the labels 12 on the wafer boat are a group of associated labels 12, for example, two of them are arranged as shown in Figure 3 and Figure 4 , one of which is to arrange a label at the side end of the wafer boat and a label at the bottom end of the visible shell; the other is to arrange a label at the top end of the wafer boat and a label at the bottom of the visible shell. One signal transceiver 11 (RFID reading antenna) can be installed above and below each storage unit, and the labels 12 distributed at the top end or side end or bottom end of the wafer box can be identified.

[0100] In an embodiment, as shown in Figure 3 , Figure 9 and Figure 10 , the label identification system further includes a plurality of antenna housings, and the signal transceiver 11 is installed in the corresponding antenna housing and installed on the electronic shelf through the antenna housing. The plurality of antenna housings corresponding to each storage unit includes a first antenna housing 40 for installing the first signal transceiver and a second antenna housing 70 for installing the second signal transceiver.

[0101] As shown in Figure 9 , Figure 10 and Figure 11As shown, each signal transceiver 11 has an antenna cover, wherein the signal transceiver 11 is arranged in the antenna cover and mounted on the electronic shelf through the antenna cover; the antenna cover includes a first antenna cover 40 mounting the first signal transceiver and a second antenna cover 70 mounting the second signal transceiver; the bottom end of the first antenna cover 40 is circumferentially connected with a plurality of first connecting pieces 401, each first connecting piece 401 includes a main body part and a limiting part, one end of the main body part is connected to the bottom end of the first antenna cover, the other end of the main body part is provided with the limiting part, and the main body part extends towards the direction away from the bottom end of the first antenna cover 40 to form a limiting area between the first connecting piece and the bottom end of the first antenna cover. The plurality of first connecting pieces 401 of the first antenna cover 40 are provided as four, and the first connecting pieces 401 are located at the middle position of the bottom surface edge of the first antenna cover 40, and the opposite two first connecting pieces 401 are symmetrically arranged. The limiting part of the first connecting piece 401 is bent inwards along the direction parallel to the bottom surface of the first antenna cover 40 on the extension end of the main body part of the first connecting piece 401 to form an arc shape to form a guide surface to smoothly guide the first connecting rod 20 and the second connecting rod 14 into the limiting area, or to allow the corresponding first connecting rod 20 and the second connecting rod 14 to also be clamped in the arc-shaped limiting part.

[0102] The top end of the second antenna cover is connected with a second connecting piece 701, each second connecting piece 701 includes a connecting plate 7012, a plurality of suspension parts 7013 and a plurality of hook-shaped parts 7011, the connecting plate 7012 is connected to the top surface of the second antenna cover 70, the plurality of suspension parts 7013 are arranged on the connecting plate 7012 along the circumferential direction of the connecting plate 7012, and are specifically arranged on the circumferential edge of the connecting plate 7012; the suspension part 7013 is arranged to extend away from the top surface of the second antenna cover 70, one end of each suspension part 7013 is connected to the connecting plate 7012, and the other end of the suspension part 7013 is connected to the hook-shaped part 7011.

[0103] As shown in Figure 10 , Figure 11 and Figure 13 , the placement layer is arranged as multiple layers on the shelf body, the shelf body is further provided with a mounting layer above the storage unit of the top layer, and the width of the mounting layer is smaller than the width of the placement layer; the storage unit of the top layer is mounted below the mounting layer through the second connecting piece 701 of the second antenna cover 70; the mounting layer is parallel to the placement layer. The placement layer is arranged as multiple layers in the vertical direction of the shelf body, and there are a plurality of storage units in each layer of the placement layer in the horizontal direction.

[0104] As shown in Figure 12 and Figure 13As shown, the placing layer and the mounting layer comprise a layer frame 90, a plurality of first connecting rods 20 fixed in the layer frame 90 in parallel and equidistance, and a plurality of second connecting rods 14 fixed in the layer frame 90 in parallel, the first connecting rods 20 and the second connecting rods 14 are arranged in cross, preferably in perpendicular, the main body of each first connecting piece 401 abuts against the corresponding first connecting rod 20 and the second connecting rod 14, so that the corresponding first connecting rod 20 and the second connecting rod 14 are in the limiting area, and the first antenna cover 40 is mounted above the placing layer.

[0105] The plurality of hook-shaped portions 7011 of each second connecting piece 701 hook the corresponding second connecting rod 14, and the plurality of hook-shaped portions 7011 of each second connecting piece 701 are limited between the corresponding two first connecting rods 20, so that the second antenna cover 70 is limitingly mounted below the corresponding placing layer and mounting layer. The corresponding second connecting rod 14 and the first connecting rod 20 of each second connecting piece 701 can be two.

[0106] The bottom surface of the first antenna cover 40 abuts against the connecting line 20, and each first antenna cover 40 corresponds to two first connecting rods 20 and second connecting rods 14 in the layer frame 90.

[0107] The hook-shaped portion 7011 is arranged on one end of the suspension portion 7013 towards the back of the electronic shelf, and the hooking direction of the hook-shaped portion 7011 is arranged downwards. For example, the suspension portion 7013 is located at four corners on the connecting plate 7012. Among them, for the second antenna cover 70, the second connecting rod 14 close to the back of the electronic shelf is thinner than the second connecting rod 14 close to the front of the electronic shelf, a group of hook-shaped portions 7011 are adapted to the second connecting rod 14 close to the back of the electronic shelf, and another group of hook-shaped portions 7011 are adapted to the second connecting rod 14 close to the front of the electronic shelf, and the head of the other group of hook-shaped portions 7011 is offset towards the direction of the suspension portion 7013, and the head of the other group of hook-shaped portions 7011 is provided with an inclined guide edge inclined away from the suspension portion 7013. In some embodiments, the hook-shaped portions 7011 are equal in size and shape, the hook-shaped portions 7011 are the same in direction, and the second connecting rods 14 are consistent in size and shape.

[0108] As shown in Figure 9 The first antenna cover 40 is provided with an indicator hole 402 for exposing an indicator light module, and the indicator hole 402 is arranged close to the goods placing side. The first antenna cover 40 is provided with an induction hole 403 for exposing an induction module, and the induction hole 403 is arranged close to the goods in the corresponding storage unit.

[0109] In an embodiment, as shown in Figure 13As shown, the frame body includes four support rods 10 with multiple grooves 101, four card sleeve assemblies 30 are arranged at the four vertices of the placement layer, the card sleeve assembly 30 includes two oppositely combined card sleeves and a limiting sleeve sleeved with the combined card sleeves, the two card sleeves are oppositely combined and sleeved on the support rod 10, the protrusion in the card sleeve is embedded in the groove 101, and the limiting sleeve is sleeved on the periphery of the card sleeve to achieve fixation. Two fixing rods are arranged on the frame body and fixed at the two ends of the mounting layer, the two ends of the fixing rod are also provided with a card sleeve assembly 30 respectively mounted on the support rod 10, and the frame body further has two wire routing frames 80, one wire routing frame 80 is connected between the two fixing rods, and the other wire routing frame 80 has a clamping hook at two ends and is clamped between the fixing rod and the bottom placement layer. The wire routing frame 80 is a frame for protecting signal lines or power lines, the signal lines or power lines drawn out of the electric control box are connected to each storage unit of each layer of the frame through the wire routing frame 80. A display screen 60 is further mounted on one of the support rods 10.

[0110] In an embodiment, different from the above embodiment, the frame body includes four threaded rods with threads, four threaded sleeves are rotatably arranged at the four vertices of the placement layer, and the four threaded sleeves are respectively sleeved on the four threaded rods to achieve threaded connection. Two mounting rods are arranged on the frame body and fixed at the two ends of the mounting member, and threaded sleeves are also arranged at the two ends of the mounting rod and respectively sleeved on the threaded rods.

[0111] In an embodiment, as shown in Figure 7 The reading controller 13 further includes a data conversion module (such as a port physical layer (PHY)), a third interface module, a power module and a second circuit board, the control module is electrically connected with the data conversion module, the data conversion module is electrically connected with the third interface module, and the third interface module is electrically connected with the main controller. The PHY connects a data link layer device (MAC) to a physical medium such as an optical fiber or a copper cable. The third interface module can be an RJ45 interface.

[0112] The reading controller 13 further includes a power module, and the power module is electrically connected with a power over Ethernet (POE) module, and 12V power is provided by the POE power supply.

[0113] The data conversion module, the third interface module, the power module and the control module are integrated on the second circuit board.

[0114] In an embodiment, as shown in Figure 6 , Figure 7 and Figure 13As shown, the label identification system further comprises a main controller, a switch and a business system server; the reading controller 13 is electrically connected to the main controller, the main controller is electrically connected to the switch, and the switch is connected to the business system server; the label identification system further comprises an electric control box 50 installed below the bottom layer placement layer in the electronic shelf, and the reading controller 13 and the main controller are installed in the electric control box 50. The main controller is also called a main control board. The switch is also called a main switch.

[0115] The signal transceiver 11 is arranged in each position unit, the reading controller 13 and the main controller are arranged in the electric control box 50 at the bottom end of the shelf body, and the signal transceiver 11 distributed on each position unit is connected to the electric control box 50 through a power line / network line and the like. One reading controller 13 can be connected to all signal transceivers 11, thereby saving cost, improving control efficiency and improving expansibility.

[0116] The embodiment of the application further discloses an RFID-based electronic shelf label identification system, in particular an RFID intelligent identification system for storing wafer transport boxes in a wafer factory and a working method thereof. The application realizes hardware circuit reading through a complete set of embedded control systems, and realizes active identification of the RFID (label 12) on the wafer transport box placed in a certain storage unit of the electronic shelf, so as to realize automatic identification of the wafer transport box, active initiation of RFID signal reading, corresponding light display according to the reading result and a series of storage location management measures and the like. Through a specific antenna layout and a signal processing mode, the application realizes efficient and accurate identification of wafer transport boxes of different positions and different types on the shelf, and reduces system cost and debugging difficulty.

[0117] The antenna in the antenna module is connected to the electric control box 50 arranged below the shelf through a network line and a coaxial line. That is, the signal transceiver transmits information to the reading controller in the electric control box 50 through the coaxial line and the RJ12 network line. When the wafer box is placed in the corresponding storage unit position unit, the sensing module on the signal transceiver 11 is triggered, the antenna module is initiated by the MCU module on the Reader board in the reading controller, the antenna module in the signal transceiver 11 starts to send a first signal to the label of the wafer transport box and receive a second signal; after reading, the signal reading module in the Reader board analyzes the information; finally, the MCU in the Reader board reports the reading result to the shelf controller; and sends a light-on instruction to light the indicator light on the signal transceiver 11 to display the storage state of the goods.

[0118] The main controller and the reading controller 13 are installed in the electric control box 50 below the shelf, the main controller is connected to the business system server through the main switch, the main controller is connected to the reading controller 13 through a TCP / IP protocol, and the reading controller 13 is connected to the antenna through an RJ12 network line and a coaxial line.

[0119] The business system server runs a business system, responsible for issuing tasks such as taking and placing, etc.; the tasks issued by the business system include receiving and responding to sensor state, receiving and responding to label 12 information, setting the color of the indicator light, etc., and can query all sensor states. The hardware architecture of the reading controller 13 and the signal transceiver 11 supports multi-antenna reading. The separated architecture of the reading controller 13 and the signal transceiver 11 reduces the transmission amount or improves the communication efficiency compared to the integrated structure.

[0120] The signal transceiver 11 is composed of an antenna module (RFID antenna circuit), an induction module (optical sensor module), an indicator light module, and an interface module. The integrated circuit board is installed in the antenna cover, the central hole of the cover is drilled, the detection light of the signal transceiver 11 passes through the hole, and the LED light can be observed through the hole drilled on the side of the antenna cover.

[0121] When the wafer transport box is placed on the location unit of the shelf, the optical sensor on the location unit senses the presence of an object and reports the sensing signal to the MCU of the reading controller 13 through the signal transceiver 11 interface (RJ45 interface).

[0122] The reading controller 13 is composed of an MCU, an RFID drive IC, a power module, an LDE lamp drive module, and corresponding antenna switching circuit and corresponding antenna interface. The MCU is the decision layer of the reading controller 13, sends the RFID information read by the RFID drive IC to the main control board, issues antenna start instructions and light instructions to the signal transceiver 11, and can control the start and stop of the buzzer through the buzzer interface. The reading controller 13 adopts POE power supply mode, and the 12V power supply is provided by the POE power supply.

[0123] The reading controller 13 is connected to the main control board through a network cable, and the reading result is sent to the main control board through the TCP / IP protocol. The main control board also sends control instructions obtained from the business system to the control module MCU of the reading controller 13 through the protocol.

[0124] When the optical sensor module places the wafer transport box on the shelf, the optical sensor senses the signal of the object being placed and reports it to the control module MCU of the reading controller 13 through the signal transceiver 11 interface (RJ45 interface). The control module MCU of the reading controller 13 immediately starts the RFID drive circuit, starts the antenna matching circuit on the signal transceiver 11 through the RFID drive circuit, senses the signal of the passive RFID, identifies the read RFID information through the RFID drive circuit on the reading controller 13, and reports the reading result to the MCU. The MCU reports the reading result to the main control board through the TCP / IP protocol, and the main control board reports the reading result and the information of the storage unit to the business system, completing the business closed loop.

[0125] After the card is read successfully, the control module MCU of the reading controller 13 starts the LED driving circuit according to the information whether the reading is successful while reporting the reading result, and displays green light for successful reading and red light for unsuccessful reading, etc. The light rules can be set in the program of the reading controller 13, and the buzzer can also emit different beeping sounds according to the reading result.

[0126] In the specification, the same or similar parts among various embodiments can be referred to each other, and each embodiment focuses on the difference from other embodiments. Especially, for the embodiments described later, the description is relatively simple, and the relevant parts can be referred to the part of the foregoing embodiments.

[0127] The above merely describes the specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A semiconductor electronic shelf identification system, the electronic shelf comprising a shelf body and a plurality of placement layers fixed in the shelf body, each of the placement layers being provided with at least one storage unit for storing goods with tags, the tags having attribute information; the identification system comprising signal transceivers and a reading controller arranged on the electronic shelf; at least one signal transceiver is arranged at each of the storage units; the signal transceiver comprises an antenna module and a sensing module, the antenna module being configured to send a first signal to the tag and receive a second signal returned from the tag and carrying the attribute information, the sensing module being triggered when the goods are stored in the corresponding storage unit; the reading controller comprises a control module electrically connected to the antenna module and the sensing module, the control module being configured to control the start and stop of the antenna module when the sensing module is triggered. the signal transceiver further comprises a first circuit board, and the antenna module and the sensing module are integrated on the first circuit board.

2. The semiconductor electronic shelf tag identification system of claim 1, wherein, the reading controller further comprises a signal reading module and a second circuit board; 3. The semiconductor electronic shelf tag identification system of claim 1, wherein, the control module is electrically connected to the signal reading module, the signal reading module is electrically connected to the antenna module, and the signal reading module is configured to read the second signal; the control module and the signal reading module are integrated on the second circuit board; alternatively, the signal transceiver further comprises a reading chip module and a first circuit board; the control module is electrically connected to the reading chip module, the reading chip module is electrically connected to the antenna module, and the reading chip module is configured to read the second signal; the antenna module and the reading chip module are integrated on the first circuit board. the reading controller further comprises an antenna switching circuit; 4. The semiconductor electronic shelf tag identification system of claim 3, wherein, the control module is electrically connected to the antenna switching circuit, the antenna switching circuit is electrically connected to the antenna module, and the antenna switching circuit is configured to perform level conversion and control the circuit on-off switching of the antenna module; the antenna switching circuit is integrated on the second circuit board. the signal transceiver further comprises an indicator light module and a first circuit board; 5. The semiconductor electronic shelf tag identification system of claim 1, wherein, the control module is electrically connected to the indicator light module in the plurality of signal transceivers, and the indicator light module is configured to indicate the storage state of the goods; the indicator light module and the antenna module are integrated on the first circuit board; and / or, the reading controller further comprises a buzzer interface and a second circuit board; the control module is electrically connected to the buzzer interface, the buzzer interface is electrically connected to a buzzer, and the control module controls the buzzer to indicate the state of the goods through the buzzer interface; the buzzer interface and the control module are integrated on the second circuit board. 6.The semiconductor electronic shelf identification system of claim 1, wherein the signal transceiver further comprises a first interface module and a first circuit board, and the reading controller further comprises a plurality of second interface modules and a second circuit board. ​ The number of the second interface modules corresponds to the number of the signal transceivers, and one of the second interface modules is electrically connected with one of the first interface modules; The first interface module and the antenna module are integrated on the first circuit board, and the second interface module and the control module are integrated on the second circuit board.

7. The semiconductor electronic shelf tag identification system of claim 1, wherein, The placing layer is used for storing goods with labels, and the goods are wafer transport boxes; The signal transceiver arranged at each storage unit comprises a first signal transceiver and / or a second signal transceiver; The first signal transceiver is arranged between the bottom end of the goods and the placing layer, and the antenna module in the first signal transceiver is used for transmitting a first signal to the label at the bottom end and / or the side end of the goods, and receiving a second signal returned from the label at the bottom end and / or the side end of the goods and carrying the attribute information; The second signal transceiver is arranged between the top end of the goods and the placing layer, and the antenna module of the second signal transceiver is used for transmitting a first signal to the label at the top end of the goods, and receiving a second signal returned from the label at the top end of the goods and carrying the attribute information.

8. The semiconductor electronic shelf tag identification system of claim 7, wherein, Each signal transceiver has an antenna cover, wherein the signal transceiver is arranged in the antenna cover and is mounted on the electronic shelf through the antenna cover; The antenna cover comprises a first antenna cover for mounting the first signal transceiver and a second antenna cover for mounting the second signal transceiver; The bottom end of the first antenna cover is circumferentially connected with a plurality of first connecting pieces, each of the first connecting pieces comprises a main body and a limiting part, one end of the main body is connected to the bottom end of the first antenna cover, and the other end of the main body is provided with the limiting part, so that a limiting area is formed between the first connecting piece and the bottom end of the first antenna cover; The top end of the second antenna cover is connected with a second connecting piece, each of the second connecting pieces comprises a connecting plate, a plurality of suspension parts and a plurality of hook-shaped parts, the connecting plate is connected to the top surface of the second antenna cover, a plurality of the suspension parts are arranged on the connecting plate along the circumference of the connecting plate, one end of each of the suspension parts is connected to the connecting plate, and the other end of the suspension part is connected to the hook-shaped part.

9. The semiconductor electronic shelf tag identification system of claim 8, wherein, The placing layer is arranged as multiple layers on the shelf body, the shelf body is further provided with a mounting layer above the storage unit on the top layer, and the width of the mounting layer is smaller than the width of the placing layer; the second antenna cover corresponding to the storage unit on the top layer is mounted below the mounting layer through the second connecting piece; The placing layer and the mounting layer each comprise a layer frame, a plurality of first connecting rods fixedly arranged in parallel in the layer frame, and a plurality of second connecting rods fixedly arranged in parallel in the layer frame, and the first connecting rods and the second connecting rods are arranged in cross; The main body of each first connecting piece abuts against the corresponding first connecting rod and the second connecting rod, so that the corresponding first connecting rod and the second connecting rod are located in the limiting area, and the first antenna cover is mounted above the placing layer. The hook-shaped parts of each second connecting piece hook the corresponding second connecting rod, and each second antenna shell is limitedly installed below the corresponding placement layer and installation layer.

10. The semiconductor electronic shelf tag identification system of claim 1, wherein, The identification system further comprises a main controller, a switch and a service system server; the reading controller is electrically connected to the main controller, the main controller is electrically connected to the switch, and the switch is connected to the service system server; The label identification system further comprises an electric control box installed below the bottom end placement layer in the electronic shelf, and the reading controller and the main controller are located in the electric control box; The reading controller further comprises a data conversion module, a third interface module, a power module and a second circuit board; The control module is electrically connected to the data conversion module, the data conversion module is electrically connected to the third interface module, and the third interface module is electrically connected to the main controller; The power module is electrically connected to an active Ethernet power supply module; The data conversion module, the third interface module, the power module and the control module are integrated on the second circuit board.

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