Circuit Break Connect Monitoring to 5G Mobile Application by williamss98675d

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021

CIRCUIT BREAK CONNECT MONITORING TO 5G MOBILE APPLICATION Ton Tsang and Cheung Yip Kan Centre of International Education, Hong Kong College of Technology, Hong Kong

ABSTRACT Along by a continuous improvement to composite electronic devices, a safety to technicians takes additionally become the matter to good concern, as a result to technicians' lives is in jeopardy while their work through shutting down circuit breakers, even that even once the breaker takes been switched off, someone will inadvertently flip to while a technician remains working. That should be a system to guarantee safety that technicians. Also, individuals do not love switching all the time toward turn on / off appliances like fans/lighting/air conditioners. It ends in wasted energy thanks to unnecessarily placing the instrument. To address these issues, we tend to come up through the system through mobile app-controlled circuit breakers that degrade wireless management to home appliances to hunt down a golem app. That replaces a traditional breaker through the mobile app-controlled system in the on / off system, where no one will activate the breaker, while not the word. The remote of home appliances helps a user to save electricity. That enhances a quality of life and luxury. Additionally, a system includes the home security mechanism against drone intrusion using the mobile app-controlled door lock system besides the mechanism that sleuthing dangerous gas leaks. A formation of the system subtracts the degree of victim associate ESP 32 microcontroller, the Bluetooth module, matrix 4x4 keyboards, and the paraffin gas detector associate with a golem mobile application. The entire system is usually compact systems.

KEYWORDS ESP 32, BT, mobile app, fire alarm, machine-controlled door lock, word-controlled breaker I.

1. INTRODUCTION As electric parts are getting better day through day, the safety to electricians take becoming the important issue along by it. Typically, electricians finish a longest line to breaker earlier working the any device. Therefore, they need to make it positive that when a trained worker is performing on home appliances, no one returns it. The reception of individuals at a constant time additionally seeks a cushy life. Once people research about these needs, we tend to come up with a solution. We tend to assure that our system is making progress that can serve the wide variety to individuals besides make a life to users simple besides comfortable. At an interval of the designed system, 2 classes to people progress to benefit. A benefiting cluster is progressing to be electric. The World Health Organization is progressing to that able toward end a breaker using the mobile app-controlled interface through that working on electric home appliances. Other class remains that a World Health Organization, the end group of users, has progressed to be able to manage home devices by victimizing mobile apps [1],[2]. They may also that able toward avoid a risk to the gas leakage, as a result of the paraffin gas detector, if they accidentally place the gas stove on the gas stove, they can eliminate the gas stove. In that absence to that safety system at intervals, a running kitchen range can refill the room by gas besides once a stove remains on, it will cause the stove to explode. An association plays out the restriction of building electrical DOI: 10.5121/ijcsit.2021.13505

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021

force and making it available at the zone any place it's required. Its concerned 3 territories - age, transmission and dispersing conveyed over a fantastic geographic area. The office structure incorporates entirely unexpected electrical and mechanical gadget gismo that arranges to remain up a tireless easily of capacity to the purchaser. The switch is one such contraption whose working is primed to the upkeep of consistent dexterously of intensity. As its name recommends, it is wont to address the junction in time the development of power. It’s utilized to organize the framework along these lines on the executives the heap stream and separate the office structure from any litigant parts. Once gave the breaker increases some scholastic encounters of 20-40 years all through that its state changes conflictingly. The breaker takes no comprehension to its own. It’s worked through association security moves which comprehend deficiencies on a framework besides separate a worthy breaker towards that opened toward isolate an inadequacy besides permit a structure toward work [3]. Essentially, the breaker is likewise worked through a manual solicitation from power structure managers. Regularly a breaker probably won't open or close available, allowing a deformity toward exist that and the ton of drawn out fluctuate than the framework will continue while working typically. Disoperation of breakers can incite undesirable changes in framework working that outcome into the structure moving into an odd state. In stunning absolute, the office gadget may need to figure past its evaluations and is hypothetically expecting to get injured. The aftereffects of sporadic working reach from flashing obstacle of association in neighborhoods complete framework breakdown. This may cost where that sensitive load toward loss to be variation dollars. Power outage limits inside the advancing years have shown well the need of getting a reliable association. The switch traces an essential an aspect of the attestation structure similarly in light of the fact that the higher-up the board and data Acquisition framework (SCADA) Its activity ought to be solid, secure and rapid. To ensure these choices reformist review and upkeep that be performed to the breakers toward recognize besides fix that the abrogate deteriorating breakers [4],[5].

1.1. Problem Definition A control is encased various mechanical gadget parts. The basic portions of a breaker are contacts, dielectric, working instrument, input circle partner degreed packaging. A shortcoming in at any rate one among these parts could incite discontentedness of electrical switch development. Clear looking frameworks are sorted out and intended to screen the remaining of those sections and anticipate the hour of help. A social gathering of pros has built up a watching structure that gets information with respect to the instrument speed, stage streams, gas weight and temperature. Another function here at Texas A&M workforce has built up an electrical switch viewing and assessment programming that utilizations signal getting ready partner degreed expert structures to inspect the control criticism circle hails and separate irregularities inside the working of the electrical switch. One all a ton of accumulation of specialists has composed a structure for making positive with respect to and examining vibration signals from an electrical switch. • • •

Supervise the working states of the electrical switch stop activity if the electrical switch is outside its operational cutoff points Execute working solicitations whenever it's guaranteed to attempt to hence

Signs recorded that a control circuit will give information around these cutoff points besides have connection end of control circuit thriving. Beginning at now accessible checking structures are extreme and don't thoroughly legitimize the expense of introducing them [6],[7]. This proposal rotates around organizing a reaction for screen the control circuit of an electrical switch and assembles information which would then have the alternative to be eviscerated to anticipate upkeep time.

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021

The design of a monitoring system involves: • • • •

Determining a total toward be surveyed Defining the utilitarian necessities that checking framework Designing the planning that checking framework Evaluating the model to an organized electrical switch screen

The organized framework must cook explicitly to appraisal of the control circuit signals. The going with an area portrays a touch of the current watching plans and their injuries.

1.2. Proposed solution Web seeing of control input circle are frequently acclimated drive the degree partner degreed fleeting request of unequivocal encourage exercises to be performed. Synchronized record: The CBM synchronizes recorded data to a general time typical sharing framework wide application toward utilizes the recorded information. • • • •

Straightforward establishment: The electrical switch checking structure can be given at a station inside minutes by 2 or 3 staff. The framework basically must be constrained to be identified with the signs and ability to be usable. Estimation of establishment: beside the irrelevant work cost the same expense is associated with gear establishment. Straightforward use and support: an on the spot graphical UI award the customer to deal with the structure and screen the breaker. Data interface: The framework outfits combine limit with a data interface whereat totally various applications are frequently delivered, as such broadening utility of the structure [8],[9].

1.3. Objective 1. For building services 4 type services need converge one or two type service for further development. 2. Study survey project need include design issues. 3. This is design, innovation & research projects. 4. Saving energy and power consumption issues need indicate how much % improvement in performance parameters.

1.4. Conclusion This part spoke to the issue that the sorted-out breaker Monitor hopes to explain. Upkeep techniques right as of now being used by organization affiliations were investigated. The power remaining of set up was depicted and a territory of the current examination was assessed. A short system of the necessities for the arranged arrangement was introduced.

2. LITERATURE REVIEW 2.1. System Architecture This half portrays the overall concocting of the control checking structure. The framework arrangement is measurable to nature toward think about re-accommodation to equipment besides 61

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021

programming blocks. A need envisioned to the past part show that the information guaranteeing about unit ought to be mounted that breaker. One information getting unit besides dealing by unit remains required that each breaker. In order to decrease a by and large estimation of the structure educated slave design is arranged that keeps the information securing equipment at the breaker, known as the slave, to while not an uncertainty the base and consolidates the dealing with that all breakers into one professional unit, known as a master. Inside the expert slave planning, a slave unit remain found at each breaker that switchyard besides should get the sign information. The learned unit remains prepared that an administration house toward store up an information collected through all slave units besides cycle it six shows a setup of the CBM framework inside a substation. A structure remains wanted toward consider comparative assortment of slaves as that remain circuit breakers to substation. A slave structures will be controlled that the control house abuses an interface gave through a learned framework.

2.2. Hardware Architecture The rigging is wanted to gracefully a sensible reaction for checking information effectively. It incorporates slave structures mounted near a circuit breaker to environment evidence specialties. A master unit remains place inside an administration house that consumes controlled environment that vigorous activity to expert unit inside basic cutoff points.

Figure 1

2.3. Slave unit architecture An unimportant work account checking makes that rudimentary that a slave unit to perform information securing at each breaker to stripped right down toward a base necessity. Subsequently a slave unit is sorted out signally towards picked up information flags and sent them to the master unit while loathing out any asset genuine dealing with on the signs. The slave unit contains four huge segments - signal trim, direct to inventive change, dealing with and much off transmission.

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021

Figure 2

Figure 3. Circuit Breaker Monitoring



Signal trim module: The sign adornment and partition module give satisfactory voltage levels to information securing. The signs of the control input circuit are at 2 voltage levels. A standing signs are at 130V DC however the shunt flags that screen streams are inside the ±1V space. The sign trim component scales the data signs that be in the [-5, +5] V shift variable at the responsibility of the A/D convertor component. The concocting of the sign adornment module is anticipated to the reason that the high or low potential unitage input signals are first condensed or heightened in centrality [4],[10],[11]. The circuit gives selectable development modules to accomplish this. The signs are then rehearsed a withdrawal block.

Figure 4. Input Amplifier 63

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021



Simple to creative change component: The A/D component takes the data signal in [-5, +5] volt reach and converts it to a programmed sign. The module should give a goal of least twelve things for the voltage range. The examination is achieved at indistinguishable time for all channels. The looking at rate will be set by the customer inside the available degree of the apparatus. The component is said with the processor and moves information thereto and gains power orders from it. Remote Transceiver: an unfamiliar electronic hardware abuse Frequency Hopping unfurl Spectrum headway is utilized to pass on the collected information to the educated unit inside the administration house. Continue skipping spread arrive at improvement is singled out the grounds that the transmission shift required in a really station ought to be developed utilizing this inaccessible progression. The modem works in a component multipoint mode [12]. During this mode, the slave units talk with the ace unit and furthermore the contrary route around in any case there's no correspondence between the slaves. During this mode the guarantee to expert information partner is regularly solid, ensuring valiant nature of information move. The far-off module goes more likely than not together of the multipoint focuses and chats with the expert unit. The correspondence is constrained by the chip that plans the distant phone for non-concurrent broadcast all together that messages will be sent and gotten as and once ability occur.

3. METHODOLOGY The past region portrayed the nonexclusive planning of the framework that may fulfill the strong conditions of the control checking structure. This fragment depicts the use of a working model to fulfill the objectives appeared in past parts. The improvement of the electrical circuit watching System could be a constant cycle at the electrical Power besides Power Engineering (EPPE) labs in Texas A&M School. An execution to first model that checking structure besides consequently a driving force that item made game plans for the accompanying model is depicted during this fragment. The utilization of second model is advancing at the hour of making out of this report. The execution is routinely comprehensively assembled into 2 courses of action for straightforwardness of portrayal. One request is instrumentation that depicts all the contraptions that went into the structure and another is adjusting which portrays the organization headings written to make the rigging play out the ideal undertaking [13]. The equipment configuration is basically vague as in each the fundamental and second model, the most separation being that the accompanying model uses ease fragments giving very nearly a relative utility because the basic model. This part depicts the equipment inferred for the principle model. The item expected for the main model is a straightforward one. It basically offers accomplice degree demand line interface toward execute data guarantee limits. No interface remains available toward move the plan of the contraption or to check a got information [13]. The central method of composing PC programs was made with the plan toward check the working of the model inside the field and in this way toward make a necessary alteration that ensuing variety toward fulfill a sensible basics. This part depicts the organized of second sort of the item with the movements set.

3.1. Hardware The framework instrumentation is every now and again secluded into slave unit equipment and master unit gear. These 2 strategies of unit are truly specific from each other. They at any rate rely upon one another to play out the data ensuring about hence should utilize strong turn of events. The resulting two domains depict the slave besides thusly a master unit hardware.

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021

3.1.1.

Slave unit hardware

A slave unit equipment fuses to five modules combined, signal frivolity module, processor, streak putting away, distant French telephone and force deftly. 3.1.2.

Signal conditioning module

A sign condition module remains masterminded through discrete portions mounted to the PCB toward offer confining, confinement besides right augmentation that data signals. A circuit is replicated indistinct extent of times on the PCB in light of the fact that the proportion of required channels. The circuit is consistently allocated into 3 zones as indicated by the capacity each performs. Starting section is formed circuit U1 by outside resistors, capacitors accomplice degreed inductors. Inductors L1 besides L2, besides capacitors C1 then C2 are utilized toward perform change separating. Made circuit U1 is operational speaker which, with outside resistors fills in as an arrangement intensifier. Its motivation is to achieve signal trim.

Figure 5: Signal conditioning module

3.1.3.

Processor and storage

An 80486-style based by and large processor running the ROM-DOS working framework remains used considering a way that the basic creation arranged contraption. A 32Mb flicker microchip introduced on a processor board fills in as a breaking point contraption that recorded information. A processor combines the fifty-pin transport that conversing through A/D board. A processor in addition takes 2 sequent ports, one in all that remains used that correspondence through a star unit. 3.1.4.

Wireless transceiver

The far-off handset made by Freeware impels is related to the progressive port to the processor. That chats through a master handset unit utilizing Frequency Hopping spread out Spectrum advancement. A handset remains set up toward figure as the slave inside an element multipoint methodology to development. A data rate remains set at 115,200 Bps.

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021

3.2. Software 3.2.1.

Slave unit software

1. Instrumentality subordinate restricts: These cutoff points depend upon the equipment for accomplishing the ideal objective. The Hardware introduction work, A/D baffle and memory warehousing limit have a locale with this class. 2. Instrumentality free restricts: These cutoff points are autonomous of the equipment and a code can be reused whether a processor changes as long as it may be gathered to a new processor. A A/D interfere with work and the continuous correspondence intrude on limits make the thing work driven. At whatever point A/D change happens the AD Interrupt () intrude with work gets the changed over modernized respects that an ADC besides stores them to cyclic assistance to processor's key memory. On an off chance that a limit has happened the Data Record () work begins recording an information that cyclic that streak memory. A cyclic cushion besides contains information that going before a second once the work happened. This information offers data as for the conditions before the limits and is additionally recorded that streak memory through a post work information. A Retransfer () work remains used toward move information toward besides from the sparkle memory. At the explanation, when a record has been placing away, the slave request that the master perceive information file and upon affirmation sends the data record. Table 1. Slave unit software

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021

Figure 6. Flow diagram of slave unit software

3.2.2.

Communication protocol

A correspondence show shapes a connection among the ace besides slave unit programming adventures. An order named CommRS232 () remains proposed toward understand a correspondence show among an ace besides slave unit. a class executes strategies to empower correspondence that persistent port. •

•

Relay orders from expert to slave Transfer new strategy data from genius to slave

A class takes ways to understand a correspondence show besides gives interfaces that enable totally startling characterizations or capacities to incite to the correspondence work environments. This thing figured out framework licenses ease of progress and programming support. On these lines, regardless of whether the slave and master unit programming checks change a correspondence show class shouldn't be changed. The going with generally not many passages depicts the subtleties of the correspondence show. The faraway structure organized works to the component multipoint mode. In that mode a master gives near message toward all a slave unit besides a message isn't seen through a slave. At any rate that slaves set up an association with the master a message is seen through a professional. A return partner remains as such the solid one. That show remains finished inside through an inaccessible gadget utilized for communication. The correspondence show utilized by the far away handsets is specific and hence stands out from the affiliation organizing the modems [13]. The correspondence show executed in the thing is organized in order to work with any restrictive show as long as the select show fulfills information move necessities. The show expected that Master-slave correspondence connects each slave unit to perceive if the message is made arrangements that it. Each slave remains 67

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021

distributed an ID which is one byte long. A degree to IDs remains that 0 to 255. An ID 0 is saved toward imply "all slaves" besides an ID one remains set something aside the Master unit. Thus, that are as often as possible a limitation of two54 slaves for every master. The all-inclusive message is what's all the more modestly coded into a 1 PC memory unit code, implied as code. Table 2. Master side view of communication codes

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021

Figure 7. Command message structure

On the off likelihood that everyone slaves are to execute a vague solicitation; the ID byte will zero. The masterminding orders appeared to the Tables license an ace unit toward talk by a slave unit as such as toward perform client showed course of action tries and a couple robotized strategies errands. The solicitations are utilized to demand current approach that the slave, see receipt to design, send new plan toward the slave besides see change to course of action. a data move orders remain utilized to perceive to the slave remains set up to send information, get information, confer and header records from slave and see a receipt to the information. A GPS synchronization orders remain utilized through a GPS synchronization tally depicted later during this part. Totally startling solicitations like restart grant the client to regulate slave development [18]. 3.2.3.

Data transfer

The solicitation codes hush up unambiguously to contain messages that practices to a slave needs to perform. An equivalent regardless genuinely extraordinary strategy remains applied that move to data among an ace besides slave units. A data is isolated to the bunch the best size of that is picked reliant to the far-off transmission data move capacity besides might be arranged through the UI. That all gathering remain included 2 zones. 3.2.4.

Data packet structure

Figure 8. Command message structure

The information contained inside the bundle is in equivalent arrangement yet is tended to in positional depiction system base in the figure for comfort. The focal PC memory unit is that the slave id. A subsequent two bytes address a gathering number to unsigned into plan. That can be 69

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021

the limitation of 32768 packs earlier a number again goes toward zero. a going with 4 bytes chooses a measure to bytes 'N' contained to that pack. A data remains in unsigned long into plan. In this way the best number to bytes. A going with N bytes contains an information byte that the record. An information bytes remain 2-byte whole numbers to two's improvement plan. Precisely that a slave unit finishes the way toward recording of a limit, it demands the professional to perceive information. The master unit arranges the information gathering programming and sends besides sees toward the slave unit. A slave unit by then beginnings moves of information gatherings. The expert unit gets the gathering and checks in the event that it contains the predestined extent of information. On the off chance that the bundle size is right, the expert unit affirms get-together of the gathering with a see signal. In the event that the slave doesn't get a see message that master after a specific time interval, it emphasizes an information bundle [2]. Right when all information bundles that be sent besides seen, a slave unit sends an "Information move total" sign to the star unit and the master unit information move assessment finishes and moves control to the arrangement record move check.

Figure 9. design data structure in software

3.2.5.

Configuration and header file transfer

The plan besides header record move figuring’s similar to the information move assessment adjacent to that the reports are little to the point that the calculations don't need to break them into different bundles. Additionally, the number of bytes to pack remain in ASCII plan for 54 ease of progress to message setup reports.

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021

3.3. Master unit software • • •

•

Correspondence by the slaves Graphical UI that control GPS synchronization Information assessment besides breaking point

A master unit composing PC programs remains a limit driven programming what's more uses a graphical UI to permit the customer to deal with the observing framework. It’s made in Visual C# that ponders direct improvement of each these highlights. 3.3.1.

Graphical user interface

A graphical UI connects with a client to control a watching framework by varied structure interfaces like gets, textboxes and thereafter forward showed up on the windows interface. Table 3. Windows forms designed in master unit software

3.3.2.

Design

The designed project can turn on or off the most important breaker in the house by a help to the 4x4 matrix keyboard. Additionally, a BT board has been used that Bluetooth assets to mobile applications by ESP 32. A Bluetooth module offers an option to simultaneously add intervals from zero to one hundred meters, with a two hundred Mbps information transfer rate and thirtytwo gigabytes. We connected a home appliance to an ESP 32 board with relay module. The user remains allowed toward control home appliances through a mobile application. This explicit system is built in some way so that the data input device is accessible by a trained worker to get the word in to close the breaker. A silencing button next to the keyboard is complemented. If the 71

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021

paraffin gas detector becomes active and therefore eliminates the need for an alarm, the buzzer it is usually silenced by the silent button.

Figure 10. Flowchart of the operation process

3.4. Summary of Methodology The instrumentation required besides that combine subtleties remained portrayed that both a slave besides a master unit. An item made toward play out A data ensuring about limit on the slave unit remained investigated. The movement of the thing for master unit, that co-ordinates the data ensuring about amongst slaves and makes the information responsive absolutely different applications was examined. The following half portrays the examination of this model course of action.

4. CONCLUSIONS 4.1. Conclusions This part spoke to the issue that the sorted-out breaker Monitor hopes to explain. Upkeep techniques right as of now being used by organization affiliations were investigated. The power remaining of set up was depicted and a territory of the current examination was assessed. A short system of the necessities for the arranged arrangement was introduced. Partner in treatment gifted slave planning is extended which can have a cost to the structure per breaker toward a base. A different segment to the slave besides master gear remains depicted besides their interconnection subtleties remain introduced. A thing necessity is that slave besides expert structure remain spoken to besides that part modules remain depicted to detail. A course of action portrayed 72

International Journal of Computer Science & Information Technology (IJCSIT) Vol 13, No 5, October 2021

during this part is nonexclusive in nature. The instrumentation required besides its combine subtleties remained portrayed that both a slave besides a master unit. An item made toward play out a data ensuring about limit that slave unit remained investigated. A movement to a thing that master unit, that coordinates a data ensuring about between slaves besides makes the information responsive absolutely different applications was examined. The following half portrays the examination of this model course of action. Circuit breakers structure a key a bit of the force framework and need standard evaluation and support to ensure immovable nature of activity. This assistance procedure utilized consolidates hands going truly to the breaker. They record the info hover signals by working the breaker and build an end subject to the evaluation between recorded signals and reference signals. Different affiliations have begun utilizing arranged checking of circuit breakers regardless it's yet to impel wide insistence. Inspectors have made ways to deal with eviscerate the recorded signs in addition, make decisions regarding breaker status. At any rate crucial expense of utilization veered from the utility that the robotized frameworks give is an impediment to their colossal degree use. Smallest effort discerning related robotized assessment structures that give fare explicitly to switch looking at aren't open viewing. A straightforwardness checking framework orchestrated expressly to figure with electrical switch control signals was existent and overviewed. The framework will screen up to 15 electrical switch signals. Accomplice master slave planning was depicted for the framework which reduces use regard per breaker by utilizing a solitary processor as far as possible fundamental to any or all data procure units. The slave unit secures the signs from the electrical switch input circle and converts them to arranged structure. The signs are around then sent remotely to master unit. The choice to talk data remotely was made to reduce association expenses and expansion ease of establishment.

4.2. Recommendation This arrangement typically extends to working with each GSM and Bluetooth association at the same time. That is a controller typically complementary to the offered connection check. If A Bluetooth association remains out there, it works through a Bluetooth association. If Bluetooth association remains not offered then it works through GSM association. In this way, that be able toward function below in all circumstances. Voice management can also be supplemented by this system, thus not requiring a user toward press any button toward issue commands, but only commands. A system can also be worked through optional home appliances to a skin part of the house. It can also be extended toward associate itself with predefined Macintosh addresses to Bluetooth modules.

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U.S.-Canada Power System Outage Task Force, “Final report on the August 14, 2003 blackout in the United States and Canada: Causes and recommendations,” accessed on April 2004. J. Endrenyi, S. Aboresheid, R. N. Allan, G. J. Anders, S. Asgarpoor et al., “The present status of maintenance strategies and the impact of maintenance on reliability,” IEEE Transactions on Power Systems, vol. 16, no. 4, pp. 638–646, November 2001. Bosma and R. Thomas, “Condition monitoring and maintenance strategies for high-voltage circuit breakers,” in IEE 6th International Conference on Advances in Power System Control, Operation and Management (APSCOM-2003), vol. 1, Hong Kong, Nov. 11–14, 2003, pp. 191–196. CIGRE Working Group A3.12, “Failure survey on circuit breaker control systems: Summary report,” Electra, vol. N-216, Oct. 2004. W. Liu, H. Liu, J. Wang, and D. Fang, “An on-line working condition monitoring and fault alarm system for high voltage circuit breakers,” in IEE 2nd International Conference on Advances in Power System Control, Operation and Management (APSCOM-93), vol. 2, Hong Kong, Dec. 7–10, 1993, pp. 695–699

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AUTHORS Tony Tsang (MIEEE’2000) received the BEng degree in Electronics & Electrical Engineering with First Class Honours in U.K., in 1992. He studied the Master Degree in Computation from Computing Laboratory, Oxford University (U.K.) in 1995. He received the Ph.D from the La Trobe University (Australia) in 2000. He was awarded the La Trobe University Post-graduation Scholarship in 1998. He works in Hong Kong Polytechnic University as Lecturer since 2001. He works in Hong Kong College of Technology in 2014. He has numerous publications (more than 110 articles) in international journals and conferences and is a technical reviewer for several international journals and conferences. His research interests include mobile computing, networking, protocol engineering and formal methods. Dr. Tsang is a member of the IET and the IEEE.