FORM 2
THE PATENT ACT 1970
&
The Patents Rules, 2003
COMPLETE SPECIFICATION (See section 10 and rule 13)
1. TITLE OF THE INVENTION:
"System for Visual Fault Location Indication Using Radio Frequency
Identification"
2. APPLICANT:
(a) NAME: Larsen &Toubro Limited
(b) NATIONALITY: Indian Company registered under the
provisions of the Companies Act-1956.
(c) ADDRESS: LARSEN & TOUBRO LIMITED,
L&T House, Ballard Estate, P. 0. Box: 278. Mumbai 400 001, India
3. PREAMBLE TO THE DESCRIPTION:
COMPLETE
The following specification particularly describes the invention and the manner in which it is to be performed.

System for Visual Fault Location Indication Using Radio Frequency
Identification
Field of the invention
The present invention relates to an electronic trip unit and more particularly, to a use of radio frequency identification (RFID) in the electronic trip unit for transmitting data, particularly fault data, to a central RFID reader for providing a visual location of a fault,
Background of the invention
Presently available systems in an electronic trip unit use serial communication to transmit data to a central monitoring system. However, the data is transmitted only when information is asked by a control panel that forms a master slave configuration. The data on which the fault conditions were present to trigger the trip condition is useful for fault diagnosis. However, the fault diagnosis is complicated due to lack of information. Also, the exact location of fault is not known unless the mapping is done with respect to its ID which could be quite complex in multi breaker panel network.
Efforts are being made for the use of a radio frequency identification (RFID) technology for an asset tracking and monitoring. For example, US Patent Application No. 20070247768 Al discloses use of RFID technology for controlling operation of a circuit breaker through a hand held device. Further, an European Patent, EP2021737 Al discloses use of a RFID passive tag for building monitoring and safety. Another US Patent Application 20080129301 discloses a method of detecting and verifying installed circuit breaker architecture. Furthermore, another European Patent, EP2178023 discloses a RFID based contact position indication which is used to stop the operation of the RFID tag to indicate the opening of a switch.

In a typical fault scenario, the circuit breaker records an event and trips the system thereby clearing the fault. But in certain events, even the power of the circuit breaker is removed. So the trip unit records the event as fault before power goes OFF. Hence, the circuit breaker needs to be powered separately through an auxiliary supply to know the recent trip event record.
Accordingly, there exists a need to provide a system which immediately updates the information of trip to a central monitoring system along with a fault location and a fault data before the circuit breaker trips.
Objects of the invention
An object of the present invention is to immediately update information of a trip to a central monitoring system along with a fault location and a fault data before a c ircu it breaker tri ps.
Another object of the present invention is to provide a system that consumes least power and transmits information in compact form without having to wait for a request query.
Summary of the invention
Accordingly, the present invention provides a system for visual fault location indication using radio frequency identification (RFID) within an electronic trip unit. The system includes a plurality of RFID modules configured in the electronic trip unit. The plurality of RFID modules are capable of sending information by any one of wired and wireless means. Further, the system includes a microcontrollei for sensing information from the plurality of RFID modules and providing information about protection of the plurality of RFID modules. Furthermore, the system includes a plurality of RFID readers. Each RFJD reader of the plurality of RFID readers is capable of capturing tripping data from the

electronic trip unit. Moreover, the system includes a control panel capable of receiving the captured information from the plurality of RFID readers by any one of wired and wireless means and a display means capable of interfacing with the control panel to show the visual fault location.
Brief description of drawings
Other features as well as the advantages of the invention will be clear from the following description.
In the appended drawings:
Figure 1 shows a circuit diagram of a system for visual fault location indication using radio frequency identification (RFID) within an electronic trip unit, in accordance with the present invention;
Figure 2 shows a schematic diagram of the system for a visual fault location indication,in accordance with the present invention; and
Figure 3 shows a representation of visual fault location indication, in accordance with the present invention.
Detailed description of the invention
For a thorough understanding of the present invention, reference is.to be made to the following detailed description, including the appended claims, in connection with the above-described drawings. Although the present invention is described in connection with exemplary embodiments, the present invention is not intended to be limited to the specific forms set forth herein. It is understood that various omissions and substitutions of equivalents are contemplated as circumstances may suggest or render expedient, but these are intended to cover the application or implementation without departing from the spirit or scope of the claims of the

present invention. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
The present invention provides a system for visual fault location indication using radio frequency identification (RFID) within an electronic trip unit. The RFID in the electronic trip unit of the present invention immediately updates the information of a trip to a central monitoring system along with a fault location and a fault data before a circuit breaker trips.
Referring to figures 1 and 2, there is shown a system (100) for visual fault location indication using radio frequency identification (RFID) within an electronic trip unit (60), in accordance with the present invention. The system (100) comprises a plurality of RFID modules (10), a microcontroller (20), a plurality of RFID readers (30), a control panel (40) and a display means (50).
The plurality of RFID modules (10) are configured in the electronic trip unit (60). The plurality of RFID modules (10) is capable of sending information by any one of wired and wireless means. The plurality of RFID modules (10) includes RFID tags for sending the information to the microcontroller (20). Specifically, the microcontroller (20) senses input signal from the RFID tags and provides information abQut protection of the plurality of RFID modules (10). The information sent by the plurality of RFID tags is captured by the plurality of RFID readers (30). Specifically following chart shows data format of the RFID active tag, for example, information to be sent by the plurality of RFID readers (30).

Data 1 Data 2 Data 3
Starting sequence Unique ID Protection status
Specifically, each RFID reader of the plurality of RFID readers (30) is capable of capturing tripping data from the electronic trip unit. The plurality of RFID readers

(3Q) captures and sends the trip data from the electronic trip unit (60) to the control panel (40).
The control panel (40) is capable of receiving the captured information from the plurality of RF.ID readers (30) by any one of wired and wireless means. The display means (50) is capable of interfacing with the control panel (40) to show the visual fault location. In an embodiment, the display means (50) is a human machine interface coupled to a computer (PC HMI),
Again referring to figure 2. there are shown a plurality of electronic tripping units
(80). The RFID reader (30) captures the tripping data from the plurality of
electronic trip unit (80), which is sent further to control panel (40) and
subsequently to the display means (50), for example PC HMI for indication of the
i fault visually thereon. The system (100) is an automatic fault monitoring and
alarming system as the system (100) transmits information in a compact form
without having to wait for a request query from the control panel (40).
Referring to figure 3, a sample of the visual fault location as shown by "A" on a sample floor plan in accordance with the present invention is shown. The display means (50) for example PC HMI shows the visual indication of the fault on the floor plan.
Advantages of the invention
1. The system (100) provides a visual fault location on the PC HMI (50).
2. The system (100) provides an automatic fault monitoring and alarming system.
3. The system (100) provides a real time fault update about the fault data along with the location.

4. The system (100) consumes least power for information to be updated before tripping and provides a compact form of data transmission to reduce transmission power.
5. The system (100) transmits information wivelessly to ease the installation hassles.
6. The system (100) helps the customer to take necessary action immediately without having to wait for communication system to update the information. The customer also gets to know the location of fault for immediate addressing of the issue.
The foregoing descriptions of specific embodiments of the present invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the present invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the present invention and its practical application, and to thereby enable others skilled in the art to best utilize the present invention and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omissions and substitutions of equivalents are contemplated as circumstances may suggest or render expedient, but such omissions and substitutions are intended to cover the application or implementation without departing from the spirit or scope of the claims of the present invention.

We Claim:
1. A system for visual fault location indication using radio frequency
identification (RF1D) within an electronic trip unit, the system comprising:
a plurality of RFID modules configured in the electronic trip unit, the plurality of RFID modules capable of sending information by any one of wired and wireless means;
a microcontroller for sensing information from the plurality of RFID modules and providing information about protection of the plurality of RFID modules;
a plurality of RFID readers, each RFID reader capable of capturing tripping data from the electronic trip unit;
a control panel capable of receiving the captured information from the plurality of RFID readers by any one of wired and wireless means; and
a display means capable of interfacing with the control panel to show the visual fault location.
2. The system as claimed in claim 1, wherein the plurality of RFID
modules includes active RFID tags.