The present invention relates to the communication technology and can be used for monitoring connections of patch panels.
There are many different means for cable systems monitoring. The main purpose of the systems is to determine what ports of patch panels a patch cord connects to. In other words it is to monitor connection of variable part of a “cable channel” (according to ISO/IEC 11801:2002 standard).
For example, the U.S. Pat. No 6,784,802 (31 Aug 2004) discloses the similar system based on RFID. Plugs of patch cords are provided with RFID tags. Identifiers of the RFID tags are read by RFID sensors (antennas) of an RFID interrogator. The sensors are mounted at every port of a patch panel. The disadvantage of the system is that every port of the patch panel needs proper RFID sensor (antenna).
The closest analog is the system described in U.S. Pat. No 6,424,710 (23 Jul. 2002). Each port of patch panels in the system is provided with the sensor that detects the presence of a patch cord plug in the patch panel port. The disadvantage of the system is that it can not determine what specific patch cords is connected to the port of patch panel.
Thus, the object of the present invention consists in developing such means of monitoring detachable connections of cable channel that allow to identify a patch cord and a patch panel port where a plug of the patch cord is connected to. In addition these means do not require a proper antenna of RFID interrogator for every port of the patch panel.
In order for achieving this technical result, it is proposed a system for monitoring detachable connections of cable channel using RFID tags, which system comprising: patch panels thereto each of at least some ports of the patch panels is provided with the sensor of presence, which changes its state when a patch cord plug is connected to the port; computer system, which processes the signals of said sensor of presence of plug. In addition, in accordance with the present invention, the system comprises the patch cord at least one plug of which is provided with the sensor of plug with the RFID tag which tag changes its reply signal perceived by an RFID interrogator when the plug is connected to the port of patch panel. Also the system comprises one or several RFID interrogator that is/are used to interrogate the data of said RFID tag of sensor of plug at some interval of time. The memory of the computer system contains the identifier of the RFID tag of sensor of plug and the identifier is correlated with the patch cord and/or the plug of the patch cord where the sensor of plug is mounted. The computer system is capable of identifying of the plug or/and the patch cord and the patch panel port where the plug connected to. In addition the identification is based on the signal of the sensor of presence and the data of the changing of the reply signal of the RFID tag of the sensor of the plug. And the data is/are transmitted by the RFID interrogator or interrogators to the computer system after connecting the plug provided with the sensor of plug to the port provided with the sensor of presence.
In the proposed system, the sensor of presence of plug can comprise the RFID tag which changes its reply signal perceived by the RFID interrogator when a patch cord plug is connected to the port.
The changing of reply signal of the RFID tags of sensors of plug and/or sensors of presence can be expressed itself in possibility or impossibility to identify the RFID tags by the RFID interrogator or interrogators.
In some cases changing of reply signal of the RFID tags of sensors of plug and/or sensors of presence takes place as a result of influence of the interference generated by approach the RFID tags to metal.
It is possible to provide electrical circuits of RFID tags of sensors of plug and/or sensors of presence with a switch, which can be a dry reed switch.
In other cases the changing of reply signal of the RFID tags of sensors of plug and/or sensors of presence is expressed itself in changing of data transmitted in the reply signal of the RFID tags.
The RFID interrogator can have a near-field antenna.
In addition RFID interrogator or interrogators can have an antenna multiplexer that feeds or/and receives the signal of RFID antennas depending on data of states of external sensors.
Throughout all drawings, the same reference numerals relate to the same or identical elements.
The system according to the present invention can be implemented in several similar embodiments that are, nevertheless, implemented in the same way that is presented in
Possible design of sensors according the present invitation is presented in
In another implementation presented in
The more complicated RFID tag can have two RFID transponder chips and two dry reed switch. The first of switches is normal closed, the second one is normal opened. In this case the RFID tag (having two chips) transmits one identifier when external magnetic field presents and another identifier when external magnetic field is absent.
The computer system 5 with software and the RFID interrogator 6 in
Number | Date | Country | Kind |
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2007145103 | Dec 2007 | RU | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/RU2008/000739 | 12/3/2008 | WO | 00 | 6/4/2010 |