Low-power-consumption asset management system

Abstract

The invention belongs to the technical field of optical fiber communication, and particularly relates to a low-power-consumption asset management system which comprises a main control board, an acquisition board, an RFID tag, a cloud platform and a display terminal. The problems that an existing RFID device is high in power consumption in the working period, and a well-designed low-power-consumption strategy is essential for application scenes where electricity taking is limited and battery power supply is needed are solved. According to the low-power-consumption asset management system, the acquisition boards are sequentially awakened through the main control board in a manual or timing mode, low-power-consumption card detection and recognition are performed on the tail fiber tags one by one, management and pairing of dense assets are completed, and the remote intelligent asset management system is achieved by uploading the data to the server through wires, Bluetooth and 4G / 5G.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical fiber communication, and in particular relates to a low-power asset management system. Background Art

[0002] Fiber optic communication has become the mainstream technology of modern communication networks with its high speed and large capacity. Fiber optic networks are widely used in telecommunications, the Internet, data centers, enterprise parks and other fields. With the popularization of fiber optic networks, the number of fiber optic ports has increased dramatically, and the complexity of management has also increased. At present, many companies still rely on manual entry of QR codes. Due to the uncontrollable factors of manual intervention, data is prone to errors, which affects the management effect; at the same time, due to the untimely update of data, the asset management information database is inaccurate. The number of fiber optic ports in large networks is huge, and the complexity of management has also increased dramatically. In addition, data integration between different systems is difficult, and it is impossible to implement an automated and standardized management system.

[0003] As one of the core technical branches of radio frequency identification (RFID) technology: Near Field Communication (NFC) is a short-range, contactless wireless communication technology, and has long been the only choice for access control and identity recognition; and another important technical branch: Ultra High Frequency (UHF) RFID has also been widely used in long-range identification scenarios such as warehousing and logistics. In recent years, the results of domestic chip substitution have been remarkable, and the cost of RFID identification equipment (such as UHF RFID readers, NFC readers, etc.) and tags has dropped significantly. Due to the passive characteristics of RFID (NFC and UHD RFID) tags, it is convenient for low-power and fast on-site implementation and deployment. Based on the above situation, several major operators, State Grid and other large enterprises have gradually begun to adopt RFID technology for asset inventory, network operation and maintenance, personnel and vehicle management and other visual management.

[0004] Fiber optic port and service fiber pairing management is an important part of fiber optic network construction and operation and maintenance. With the rapid development of fiber optic networks, the scale and complexity of the system have also increased dramatically. The traditional manual management method can no longer meet the needs. Fully automated and intelligent management based on radio frequency identification has become a development trend. Considering the inconvenience of power supply in outdoor optical cross-connection boxes, most of them use lithium batteries for power supply, and the normal power consumption of RFID identification equipment is relatively high. Therefore, for applications that are sensitive to power consumption and intensive asset management such as optical fibers and ports in optical cross-connection boxes, a low-power asset management system is particularly important. Summary of the invention

[0005] The purpose of the present invention is to provide a low-power asset management system to solve the problems raised in the background technology.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0007] A low-power asset management system, comprising a main control board, at least one acquisition board, at least one RFID tag and a cloud platform;

[0008] The RFID tag stores a tag ID indicating asset information of the asset to be managed, and the RFID tag is used to bind to the corresponding asset to be managed; the main control board includes a main control unit and a communication module; the acquisition board includes an RFID identification module and a plurality of antenna units, and the antenna units correspond to ports one by one;

[0009] The low-power asset pairing management process includes an initialization calibration phase and a measurement phase;

[0010] In the initialization calibration phase, the RFID identification modules of the acquisition boards poll each antenna unit respectively, send measurement signals, and report the corresponding port numbers of all antenna units and the corresponding received signal strengths to the cloud platform via the main control board;

[0011] During the measurement phase, the cloud platform sends an asset pairing command. After receiving the command through the communication module, the main control unit wakes up each acquisition board to detect the RFID tag.

[0012] Optionally, the asset information includes at least one of a business type, a production date, a manufacturer, and a serial number corresponding to the asset to be managed.

[0013] Optionally, during the initialization calibration phase, the RFID tag is not bound to the asset to be managed, and the RFID identification module polls each antenna unit in turn, sends a measurement signal, and measures the RF signal strength RSSI reference value PR ij , PR ij Same as port number p ij Upload them to the main control board together; the main control board polls each acquisition board until the RSSI reference value measurement of all antenna units is completed, and reports the port numbers and RSSI reference value list L corresponding to all antenna units to the cloud platform.

[0014] Optionally, the cloud platform sends an asset pairing command, and after receiving the command, the main control unit requests the list L and temporarily stores it, and then wakes up each acquisition board in turn to detect each RFID tag one by one.

[0015] Optionally, the specific process in the measurement phase includes: the RFID identification module of the acquisition board sends a measurement signal to each antenna unit to measure the current RSSI value PS ij And the corresponding RSSI reference value PR ij Do poorly and get PD ij =|PS ij -PR ij |;

[0016] When PD ij If it is greater than the preset threshold PT, it means that an RFID tag is detected, and the tag ID of the RFID tag is read and recorded; otherwise, it means that the current antenna unit has no corresponding RFID tag, and the current antenna unit operation is exited;

[0017] Each acquisition board repeats the above operation for each antenna unit to detect the RFID tag and read and record the tag ID for each port.

[0018] The present invention has the following advantages:

[0019] 1. Through the contactless communication between RFID tags and acquisition boards, the automatic pairing and management of fiber optic ports and RFID tags are realized, which greatly improves the management efficiency and accuracy and reduces manual intervention and human errors.

[0020] 2. Placing the RFID identification module on the acquisition board avoids signal attenuation during transmission, thereby reducing system power consumption. At the same time, through the low-power card detection mechanism, it automatically skips the tag-free area, further reducing unnecessary energy consumption and extending battery life.

[0021] 3. The system does not require modification of existing power supply lines or interruption of existing fiber optic services, making it easy to deploy on-site. In addition, as the cost of RFID identification equipment and tags decreases, the overall cost of the system is also effectively controlled.

[0022] 4. The system supports both on-site real-time inventory and remote control and scheduled automatic inventory, meeting the management needs in different scenarios. At the same time, the system can be applied to any similar "one-to-one", "one-to-many" and other asset pairing inventory management, and has good scalability.

[0023] 5. Through the integration of cloud platform and display terminal, the visual display of asset matching and management is realized, which is convenient for managers to monitor and query asset information in real time, and improves management transparency and decision-making efficiency.

[0024] 6. The system is not only suitable for port management of optical fiber communication networks, but can also be widely used in other intensive asset management fields such as library management, warehousing and logistics, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.

[0026] Figure 1 A schematic diagram of a low-power asset management system of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the acquisition board of the present invention. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] like Figure 1-2 As shown, a low-power asset management system of the present invention includes a main control board, an acquisition board, an RFID tag, a cloud platform (including a case where it is a host computer) and a display terminal;

[0030] The RFID tag is a tag storing a code representing asset information; the main control board includes a main control unit MCU and a communication module; the acquisition board is composed of an RFID identification module, a switch device and a number of antenna units; the cloud platform is the background master control, used to issue and receive commands from the main control board; the display terminal includes a mobile phone and a tablet smart device, which is used for visual display of asset pairing and management;

[0031] The low-power asset pairing management process includes an initialization calibration phase and a measurement phase;

[0032] If the RFID identification module is placed on the main control board, the RFID transceiver signal will be attenuated when it is transmitted through the RF signal lines at all levels. As the total number of acquisition boards increases and the switch cascade increases, the RFID signal received (sent) by the acquisition board at the end of the cascade becomes weaker. In order to ensure the activation of the RFID tag and the successful demodulation of the signal, the RFID identification module of the main control board must work at the maximum transmission power, which results in higher system power consumption. Considering the low-power application requirements, this patent places the RFID identification module on the acquisition board to achieve low-power intensive asset pairing and management;

[0033] It should be noted that the low-power operation process proposed in this patent is applicable to other similar asset pairing and management systems, including but not limited to RFID identification devices on acquisition boards, and RFID identification modules include but are not limited to electromagnetic induction and coupled communication technologies such as NFC, UHF, and RFID readers;

[0034] For all RFID tags, the business type, production date, manufacturer, serial number and other related information corresponding to the optical fiber are encoded and written into the tag storage area (such as EPC, User area, etc.), and the tag is attached to the adapter of the corresponding optical fiber. The tag can also be integrated into the optical fiber adapter. The system includes a main control board with MCU and communication module, multiple acquisition boards with RFID identification modules and a large number of RFID tags. The main control board controls each acquisition board to read the RFID tag corresponding to the antenna unit one by one. Since each acquisition board has an RFID identification module, only digital control lines are needed to connect the main control board and each acquisition board, and there is no problem of step-by-step attenuation of RFID transceiver signals.

[0035] The main control board is placed in the free area of ​​the optical cross-connect box, and each acquisition board is connected in sequence. Each acquisition board is placed one by one on the dense ports in the optical cross-connect box. A row or a column is used as an antenna group. The low-power asset pairing process includes two core processes: initialization calibration and measurement phase;

[0036] Initialization calibration phase: At this time, there are no RFID tags on the antenna components of the acquisition board, and the antenna is in an unloaded state. The identification module polls each antenna unit port in turn, sends a specific measurement signal, and measures the RF signal strength RSSI reference value PR ij , same as port number p ij Together, that is (p ij ,PR ij ) upload to the main control board, the main control board polls each acquisition board until the RSSI reference value measurement of all antenna units is completed, and the corresponding port number of all antenna units and the RSSI reference value list L = [(p 11 ,PR 11 ),...,(p mn ,PR mn )] Report to the cloud platform;

[0037] Measurement phase: The remote server sends (or the terminal manually initiates) an asset pairing command. After receiving the command, the main control board requests the corresponding port numbers and RSSI reference value list L of all antenna units and temporarily stores them. Then, each acquisition board is woken up in turn to poll the antenna units one by one and perform low-power card detection on the RFID tag.

[0038] The specific process is that the identification module sends a specific measurement signal to measure the RSSI value PS ij , and subtract it from the RSSI reference value to get PD ij =|PS ij -PR ij |, if PD ijIf it is greater than the preset threshold PT, it means that an RFID tag is detected, and the RFID tag ID is read and recorded; otherwise, it means that the current antenna unit does not have a corresponding RFID tag, and the current antenna unit operation is exited; repeat the above operation, poll the next antenna unit for low-power card detection and reading, and so on. Each antenna unit on each acquisition board works one by one, and polls each antenna unit port in turn to detect the card, read and record the RFID tag ID. A port can have no RFID tag, but at most one optical tag. Each acquisition board can work in time-sharing or at the same time. The power consumption of the same number of acquisition boards to complete port optical fiber pairing is the same.

[0039] Example:

[0040] The present invention is applicable to any similar intensive asset pairing and management applications such as port and RFID tag pairing management and book management in optical communication networks. For a general optical cross-connect box, there are 12 ports in a row, then n=12, and a minimum optical cross-connect box has at least 6 rows. For convenience, the following takes a minimum optical cross-connect box in an optical communication network as an example to describe in detail the low-power system operation flow of automatic pairing of ports and RFID tags.

[0041] initialization:

[0042] Step 1: Fix the main control board in the free area of ​​the optical cross-connect box and ensure that it is easy to power and connect to the acquisition board;

[0043] Step 2: Take a row or column of ports of the optical cross-connect box as a basic unit ( Figure 1 Take one row as an example), fix each acquisition board to each basic unit of the optical cross-connect box port in turn, and use digital control lines to connect the main control board and each acquisition board step by step;

[0044] Step 3: The main control board starts the RSSI reference value measurement process, controls the acquisition board to poll the antenna units one by one, sends a specific measurement signal, measures the RF signal strength RSSI reference value PRij, and uploads it together with the port number pij, i.e. (pij, PRij) to the main control board;

[0045] Step 4: The main control board polls each acquisition board and repeats step 3 until the RSSI reference value measurement of all antenna units is completed, and a mapping list L = [(p 11 ,PR 11 ),...,(p mn ,PR mn )] and report to the cloud platform;

[0046] Step 5: The cloud platform establishes a database of optical delivery box numbers and mapping lists L based on the optical delivery box numbers;

[0047] Step 6: For the optical fiber jumper (or pigtail) 1, the service type, production date, manufacturer, serial number and other related information corresponding to the optical fiber are encoded in sequence (i.e., tag ID), and written into the internal storage area of ​​the RFID tag (optical fiber adapter) t1, such as EPC, User area, etc.;

[0048] Step 7: Install the RFID tag (fiber adapter) t1 to the fiber jumper (or pigtail) 1, so that the antenna unit in the acquisition board overlaps with the RFID tag as much as possible to ensure the activation of the tag and the normal transmission and reception of signals;

[0049] Repeat steps 6-7 until the corresponding RFID tags (fiber optic adapters) of all fiber jumpers (or pigtails) are installed.

[0050] Low power tag detection, reading and pairing:

[0051] Step 1: The cloud platform issues an asset pairing command;

[0052] Step 2: After receiving the command, the main control board requests all antenna units to correspond to the port number and RSSI reference value list L = [(p 11 ,PR 11 ),...,(p mn ,PR mn )](m=6,n=12) and stored in a temporary low-power memory;

[0053] Step 3: The main control board wakes up acquisition board 1 in turn (it can also wake up multiple acquisition boards at the same time to reduce system pairing time) and switches to antenna unit 11;

[0054] Step 4: The identification module sends a specific measurement signal and measures the RSSI value PS 11 And with the RSSI reference value PR 11 Do poorly and get PD 11 =|PS 11 -PR 11 |;

[0055] Step 5: If PD 11 If it is greater than the preset threshold PT, it means that an RFID tag is detected, and the RFID tag ID is read and recorded; otherwise, it means that the current antenna unit has no corresponding RFID tag, and the current antenna unit operation is exited;

[0056] Step 6: Each antenna unit can read at most one tag ID at a time, and no antenna unit reads a duplicate tag ID, then the antenna unit and tag ID, i.e., the port number (p ij ) and RFID tag (t v) one-to-one correspondence;

[0057] Step 7: The acquisition board switches to the next antenna unit and repeats steps 4-5 to perform low-power card detection and reading until all antenna units on acquisition board 1 are completed. The established port number (p ij ) and RFID tag (t v ) is uploaded to the main control board;

[0058] Step 8: Repeat steps 3-6 until the low-power polling read operation of all antenna acquisition boards in the optical cross-connect box is completed, and the pairing list of all port numbers and RFID tags is obtained. 11 ,t1),...,(p mn ,t w )](w is the total number of RFID tags in the optical delivery box);

[0059] Step 9: After completing the pairing identification of all ports in the optical cross-connect box, the communication module in the main control board uploads the pairing list ML of all port numbers and RFID tag numbers to the cloud platform through a certain transmission protocol (USB, Bluetooth, Cat1, etc.);

[0060] Step 10: The cloud platform receives the uploaded pairing list and updates it to the backend database. It can also be sent to smart terminals (tablets, mobile phones, etc.) for visual display.

[0061] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A low-power asset management system, characterized by: It includes a main control board, at least one acquisition board, at least one RFID tag and a cloud platform; The RFID tag stores a tag ID indicating asset information of the asset to be managed, and the RFID tag is used to be bound to the corresponding asset to be managed; The main control board includes a main control unit and a communication module; the acquisition board includes an RFID identification module and a plurality of antenna units, and the antenna units correspond to the ports one by one; The low-power asset pairing management process includes an initialization calibration phase and a measurement phase; In the initialization calibration phase, the RFID identification modules of the acquisition boards poll each antenna unit respectively, send measurement signals, and report the corresponding port numbers of all antenna units and the corresponding received signal strengths to the cloud platform via the main control board; During the measurement phase, the cloud platform sends an asset pairing command, and after receiving the command through the communication module, the main control unit wakes up each of the acquisition boards to detect the RFID tags.

2. A low-power asset management system according to claim 1, characterized in that: The asset information includes at least one of the business type, production date, manufacturer, and serial number corresponding to the asset to be managed.

3. A low-power asset management system according to claim 1, characterized in that: During the initialization calibration phase, the RFID tag is not bound to the asset to be managed. The RFID identification module polls each antenna unit in turn, sends a measurement signal, and measures the RF signal strength RSSI reference value PR ij , PR ij Same as port number p ij Upload the main control board together; The main control board polls each acquisition board until the RSSI reference value measurement of all antenna units is completed, and reports the port numbers and RSSI reference value list L corresponding to all antenna units to the cloud platform.

4. A low-power asset management system according to claim 3, characterized in that: The cloud platform sends an asset pairing command. After receiving the command, the main control unit requests the list L and temporarily stores it, and then wakes up each acquisition board in turn to detect each RFID tag one by one.

5. A low-power asset management system according to claim 4, characterized in that: The specific process in the measurement phase includes: the RFID recognition module of the acquisition board sends a measurement signal to each antenna unit to measure the current RSSI value PS ij And the corresponding RSSI reference value PR ij Do poorly and get PD ij =|PS ij -PR ij |; When PD ij If it is greater than the preset threshold PT, it means that an RFID tag is detected, and the tag ID of the RFID tag is read and recorded; otherwise, it means that the current antenna unit has no corresponding RFID tag, and the current antenna unit operation is exited; Each acquisition board repeats the above operation for each antenna unit to detect the RFID tag and read and record the tag ID for each port.

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