Monitoring system for identifying port occupation in optical cable cross connecting cabinet

Abstract

The invention discloses a monitoring system for identifying port occupation in an optical cable cross connecting cabinet. The monitoring system is characterized by comprising a reader, a master label and a slave label. According to the invention, the problem of label pairing is effectively solved, non-contact detection of the occupancy state of the port of the optical cable cross connecting cabinet is realized, physical contact of the port or a jumper fiber is not needed, and the convenience and safety of operation are improved. And the reader can receive and decode the information of the master tag and the slave tag in real time and quickly judge the state of the port, so that remote monitoring and management are facilitated. Through cooperation of the master tag and the slave tag, the occupation condition of the port can be accurately identified, errors possibly caused by manual judgment are effectively avoided, and the accuracy of data is improved.

Description

Technical Field

[0001] The invention belongs to the field of radio frequency identification and communication, and in particular relates to a monitoring system for realizing identification of port occupancy in an optical cross-connect box. Background Art

[0002] Optical cross-connect boxes are usually used in optical fiber switching networks to realize branch connections of optical cables. With the development of the Internet of Things and optical fiber communication technology, optical fiber is becoming more and more widely used as an important data transmission medium for metropolitan area networks and local area networks. However, passive optical cross-connect boxes also expose some problems during use. For example, its internal wiring is disordered, and it is not easy for workers to identify port occupancy and the matching of optical fiber jumpers with ports when repairing or installing optical fibers.

[0003] The inventory of ports in the optical cross-connect box is usually solved through manual identification or with the help of RFID reader guns.

[0004] Manual identification: When maintaining optical fiber, workers usually need to rely on paper labels to identify the port number corresponding to the optical fiber in order to find the match between the optical fiber jumper and the port. When installing new optical fiber, workers also need to check whether the port resources are occupied, and in both states, they need to manually record the port status information.

[0005] RFID point-reading gun identification method, this method is to equip the connector and port of each fiber jumper with RFID electronic tags. During inventory, workers need to use RFID readers to scan each port to read the number of the electronic tag to realize the status inventory of the port.

[0006] Manual identification is not convenient to use and maintain, and a large number of labels and records waste man-hours, resulting in low work efficiency. What is more difficult is that paper labels are easy to wear or lose, information maintenance is not timely, and the overall cost is high.

[0007] When using the RFID point-reading gun identification method, it is necessary to keep the reader and the tag at an appropriate distance, and it is difficult to ensure that each interface can achieve one-to-one accurate identification, which is prone to cross-reading. In addition, due to the large number of interfaces in the optical exchange box, it takes a long time for the RFID reader to scan one by one.

[0008] In summary, manual inspection and RFID reader identification have the defects of low efficiency, easy error, untimely inventory, etc. Therefore, this paper proposes a method to identify port occupancy in optical cross-connect box, which can realize automatic, timely and rapid identification of the status of optical cross-connect box port. Summary of the invention

[0009] The purpose of the present invention is to provide a monitoring system for identifying port occupancy in an optical cross-connect box in view of the defects of the prior art.

[0010] In order to achieve the above object, the present invention adopts the following technical solution: a monitoring system for identifying port occupancy in an optical cross-connect box, characterized by comprising: a reader, a master tag and a slave tag;

[0011] The reader is used to send radio frequency energy to power the master and slave tags, then receive the reflected signal of the master tag and decode it to determine whether the port in the optical cross-connect box is occupied, and send the occupied status of the port to the cloud;

[0012] The master tag is set on the optical cross-box port. After receiving the energy from the reader, it first enters the waiting mode for receiving data, delays for Δt, and then enters the sending mode. If a slave tag signal is received, the slave tag signal and the master tag data information are transmitted to the reader. If no slave tag signal is received, the master tag data information is transmitted to the reader.

[0013] The slave tag is set at one end of the jumper connector and is used to send a signal to the master tag by generating a reverse magnetic field after receiving energy from the reader.

[0014] Furthermore, the frequency of the radio frequency energy emitted by the reader is 840-845Mhz or 920-925Mhz.

[0015] Furthermore, the main tag includes two antenna coils, which are a near-field antenna and a far-field antenna respectively; the near-field antenna is used to collect the radio frequency energy emitted by the reader to power its own tag and receive the backscattered signal from the tag; the far-field antenna is used to send data information to the reader through backscattering.

[0016] Furthermore, the communication distance of the near-field antenna is less than 1 cm, and the communication distance of the far-field antenna is greater than 1 m.

[0017] Furthermore, the main tag also includes a tag chip, and the tag chip includes an impedance matching circuit, a rectifier, an energy storage capacitor, an energy management module, a digital baseband module and a backscatter modulation module;

[0018] The near-field antenna coil receives the RF carrier transmitted by the reader, and after impedance matching, it enters the rectifier. The rectifier converts the RF AC signal into a DC signal to charge the energy storage capacitor.

[0019] The energy storage capacitor is connected to the digital baseband module and the backscatter modulation module respectively through the energy management module, and the backscatter modulation module is connected to the far-field antenna;

[0020] When the near-field antenna coil receives energy, the digital baseband module controls the delay device to set the delay Δt through the state machine, and triggers the chip to enter the waiting mode for receiving data. The near-field antenna receives the backscattered signal from the tag. After the delay device ends, it enters the sending data mode, and the backscatter modulation module sends the data information to the reader through the far-field antenna.

[0021] Furthermore, the slave tag includes an antenna coil and a tag chip; the antenna coil collects radio frequency energy emitted by the reader to power the tag chip, and generates a reverse magnetic field for the tag chip through the antenna coil to send a signal to the master tag.

[0022] The present invention effectively solves the problem of tag pairing, realizes non-contact detection of the occupancy status of the optical cross-box port, and does not require physical contact with the port or fiber jumper, thereby improving the convenience and safety of operation. The reader can instantly receive and decode the information of the master tag and the slave tag, quickly determine the port status, and facilitate remote monitoring and management. Through the collaboration of the master tag and the slave tag, the occupancy status of the port can be accurately identified, effectively avoiding the errors that may occur in manual judgment and improving the accuracy of the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a flowchart of the solution of the embodiment.

[0024] Figure 2 is a label distribution diagram of an embodiment.

[0025] Figure 3 is an equivalent circuit diagram of the tag and the antenna of the embodiment. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The present invention proposes a semantic communication method for binocular 3D target detection, which uses a deep neural network to perform semantic extraction and coding compression at the semantic layer and realizes channel feature extraction at the communication layer, and can show better efficiency than traditional communication systems under frequency selective channels. The solution flow chart is shown in the figure below. Figure 1 shown.

[0028] A method for identifying port occupancy in an optical cross-connect box. The implementation of this method requires the cooperation of three modules: a reader, a master tag, and a slave tag. The reader needs to send radio frequency energy to power the master and slave tags. The frequency of the radio frequency energy sent by a general reader is 840-845Mhz or 920-925Mhz. The reader then needs to receive the tag reflection signal and decode it. The master tag has two antenna coils and a tag chip inside, and the slave tag has an antenna coil and a tag chip inside.

[0029] The tag chip contained in each of the master tag and the slave tag includes an impedance matching circuit, a rectifier, an energy storage capacitor, an energy management module, a digital baseband module and a backscatter modulation module, which can provide impedance matching, rectification, energy storage capacitor, energy management, digital baseband and backscatter modulation functions. The near-field antenna, impedance matching, rectification, energy storage capacitor of the slave tag are connected to the energy management module, and the near-field antenna coil receives the RF carrier transmitted by the reader. After impedance matching, it enters the rectifier, and the rectifier converts the RF AC signal into a DC signal to charge the energy storage capacitor. The energy management module is connected to the digital baseband module and the backscatter modulation module respectively. The near-field antenna of the master tag is connected to the impedance matching module, the rectifier module, the energy storage capacitor and the energy management module, and the backscatter modulation module is connected to the far-field antenna.

[0030] The main tag is located on the port of the optical cross-connect box, and has two antenna coils inside, one is a near-field antenna and the other is a far-field antenna. The function of the near-field antenna in the main tag is to collect the RF energy emitted by the reader to power its own tag, and to receive the backscattered signal from the slave tag. The function of the far-field antenna in the main tag is to send the data information of the master and slave tag signals to the reader through backscattering. The slave tag is located at one end of the jumper connector, and has a near-field antenna inside, which is used to receive the RF energy emitted by the reader to power the tag and exchange data with the main tag. Figure 2 shown.

[0031] The working principle of the reader and master-slave tag is as follows:

[0032] The reader sends radio frequency energy to the master tag and the slave tag. The near-field antenna coils of the two tags can provide energy to the tag chip after receiving the radio frequency signals respectively. The specific implementation is that the reader generates a dynamically changing magnetic field. At this moment, the master and slave near-field antennas are in a dynamically changing magnetic field, and their induction coils will dynamically capture the energy in the magnetic field, and then the tags obtain the energy of the induced electromotive force for their own work.

[0033] The digital baseband module of the main tag controls the timing logic of the entire reflection link. When the near-field antenna coil of the main tag receives energy, the tag chip starts working. The digital baseband module controls the delay through the state machine and triggers the chip to enter the waiting mode for receiving data. After the delay ends, the state machine triggers the chip to enter the sending data working mode.

[0034] The master tag has two working modes and the slave tag has one working mode. When the master tag and the slave tag receive RF energy at the same time at time T0, the slave tag enters the data sending mode and the master tag enters the data waiting mode. After the delay ends, that is, Δt, the master tag enters the data sending mode.

[0035] The slave tag does not need to respond to the reader, but only needs to respond to the master tag. The slave tag generates a weak reverse magnetic field so that the master tag can obtain the weak magnetic field generated by the slave tag, and the master tag can receive the signal of the slave tag from the reverse magnetic field. After receiving the signal of the slave tag, the master tag converts the data information of the master and slave tags into radio frequency signals through backscattering and transmits them to the reader through the same magnetic field induction principle.

[0036] After the reader successfully receives the data sent by the master tag, it decodes the data. If the decoded data contains only the master tag's serial number, it means that this port in the optical cross-connect box is not occupied; if the data returned by the master tag contains the slave tag's serial number, it means that this port in the optical cross-connect box is occupied. The reader can then send the port's occupancy status to the cloud via 4 / 5G wireless communication.

[0037] The near-field antenna described by the master tag and slave tag above has a very short communication distance. The inductance value of the near-field antenna can be described by LA, and the inductance LA has a very small loss resistance RA. When the near-field antenna senses a magnetic field, a current is induced, and an open-circuit voltage VOC appears at its terminals. The chip can be described by an input resistor RS and a built-in tuning capacitor CS. The input resistor RS, the antenna resistance RA, and the built-in tuning capacitor CS together form a series resonant circuit with the antenna's inductance LA, such as Figure 3 According to engineering experience, the operating frequency can be set to 915Mhz, and the tuning capacitor can be set to 50pf.

[0038]

[0039] It can be seen that L A At 6.06×10 -10 H. Assuming the radius of the antenna coil is a, there is L in the inductive near field. A ≈μ0πaN 2 , N is the number of turns of the coil, μ0=4π×10 -7H / m, the size of the tag can be made into 5cm×8cm, and the number of turns of the coil can be calculated. d is the backscattered communication distance, L is the length of the antenna coil, so in the case of a near-field antenna, the size of the tag and the number of turns of the coil determine the communication distance. According to the requirements of this application, the near-field communication distance is less than 1cm, and the far-field communication distance is greater than 1m, then

[0040] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A monitoring system for identifying port occupancy in an optical cross-connect box, characterized in that include: Reader, master tag and slave tag; The reader is used to send radio frequency energy to power the master and slave tags, then receive the reflected signal of the master tag and decode it to determine whether the port in the optical cross-connect box is occupied, and send the occupied status of the port to the cloud; The master tag is set on the optical cross-box port. After receiving the energy from the reader, it first enters the waiting mode for receiving data, delays for Δt, and then enters the sending mode. If a slave tag signal is received, the slave tag signal and the master tag data information are transmitted to the reader. If no slave tag signal is received, the master tag data information is transmitted to the reader. The slave tag is set at one end of the jumper connector and is used to send a signal to the master tag by generating a reverse magnetic field after receiving energy from the reader.

2. The monitoring system for identifying port occupancy in an optical cross-connect box according to claim 1, characterized in that: The frequency of the radio frequency energy emitted by the reader is 840-845Mhz or 920-925Mhz.

3. The monitoring system for identifying port occupancy in an optical cross-connect box according to claim 1, characterized in that: The main tag includes two antenna coils, which are a near-field antenna and a far-field antenna respectively; the near-field antenna is used to collect the radio frequency energy emitted by the reader to power its own tag and receive the backscattered signal from the tag; the far-field antenna is used to send data information to the reader through backscattering.

4. The monitoring system for identifying port occupancy in an optical cross-connect box according to claim 1, characterized in that: The communication distance of the near-field antenna is less than 1 cm, and the communication distance of the far-field antenna is greater than 1 m.

5. The monitoring system for identifying port occupancy in an optical cross-connect box according to claim 3, characterized in that: The main tag also includes a tag chip, which includes an impedance matching circuit, a rectifier, an energy storage capacitor, an energy management module, a digital baseband module and a backscatter modulation module; The near-field antenna coil receives the RF carrier transmitted by the reader, and after impedance matching, it enters the rectifier. The rectifier converts the RF AC signal into a DC signal to charge the energy storage capacitor. The energy storage capacitor is connected to the digital baseband module and the backscatter modulation module respectively through the energy management module, and the backscatter modulation module is connected to the far-field antenna; When the near-field antenna coil receives energy, the digital baseband module controls the delay device to set the delay Δt through the state machine, and triggers the chip to enter the waiting mode for receiving data. The near-field antenna receives the backscattered signal from the tag. After the delay device ends, it enters the sending data mode, and the backscatter modulation module sends the data information to the reader through the far-field antenna.

6. The monitoring system for identifying port occupancy in an optical cross-connect box according to claim 1, characterized in that: The slave tag includes an antenna coil and a tag chip; the antenna coil collects radio frequency energy emitted by the reader to power the tag chip, and generates a reverse magnetic field through the antenna coil to send a signal to the master tag.

Images