GB2492482A - Smart plug for identifying individual appliance and monitoring their power consumption - Google Patents

Smart plug for identifying individual appliance and monitoring their power consumption Download PDF

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Publication number
GB2492482A
GB2492482A GB1211547.3A GB201211547A GB2492482A GB 2492482 A GB2492482 A GB 2492482A GB 201211547 A GB201211547 A GB 201211547A GB 2492482 A GB2492482 A GB 2492482A
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GB
United Kingdom
Prior art keywords
text
appliance
plug
power consumption
socket
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB1211547.3A
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GB201211547D0 (en
GB2492482B (en
Inventor
Warren Garrett
Adrian Mckeon
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Individual
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Individual
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Filing date
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Publication of GB201211547D0 publication Critical patent/GB201211547D0/en
Publication of GB2492482A publication Critical patent/GB2492482A/en
Application granted granted Critical
Publication of GB2492482B publication Critical patent/GB2492482B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00028—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6691—Structural association with built-in electrical component with built-in electronic circuit with built-in signalling means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/717—Structural association with built-in electrical component with built-in light source
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/0005—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving power plugs or sockets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/66—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with pins, blades or analogous contacts and secured to apparatus or structure, e.g. to a wall
    • H01R24/70—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with pins, blades or analogous contacts and secured to apparatus or structure, e.g. to a wall with additional earth or shield contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R31/00—Coupling parts supported only by co-operation with counterpart
    • H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
    • H01R31/065—Intermediate parts for linking two coupling parts, e.g. adapter with built-in electric apparatus

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

A smart plug 2 comprises an adaptor with a plug 13 and a socket outlet 10 into which an appliance can be received, means for monitoring and calculating the power consumption of the appliance, means for transmitting power consumption information and means for identifying the appliance. The appliance may be identified by the transmission, reflection and detection of light signals from the socket 10 to a surface of the applianceâ s plug and back to a sensor in the socket 10. The applianceâ s plug may have a patterned surface which is readable by the light sources in the socket 10. The light emitting means may comprise a pipe with a first branch with a light emitter and a second branch with a light detector. Four such pipes may correspond with four dots which may encode a binary identifier. The readable identifying pattern may be disposed on a label having openings for the pins of the applianceâ s plug.

Description

Power Consumption Measurement Deviee The present invention relates to a power consumption measurement device and a label for an electrical plug.
Smart meters that measure electricity consumption are increasingly being used to provide information on power consumption within the home.
Embodiments of the present invention are directed to smart plugs into which individual appliances can be plugged and which collect data on electricity consumption of each of those appliances. The energy consumption data for a plurality of appliances can then be transmitted to a central point for analysis and presentation to the consumer, with the aim of assisting the consumer to manage their energy consumption.
i According to the invention there is provided a power consumption measurement device comprising a plug for plugging the device into a power socket, a socket for receiving an electrical plug connected to an appliance, means for calculating power consumption of the appliance, means for transmitting information relating to the power consumption and means for identifying the appliance that is plugged into the device.
The identifying means may comprise means for transmitting light towards the appliance plug and means for receiving a corresponding signal reflected from the appliance plug.
The light transmitting means may comprise a plurality of light emitting devices arranged to transmit light via the socket face.
The light transmitting means may comprise a pipe having an outlet at the socket face, a first branch of the pipe extending to at least one of the light emitting devices, the pipe further comprising a second branch extending to a sensor for detecting the reflected light.
The device may further comprise means for determining a pattern arranged on a surface of the appliance plug, for example on a label arranged over the pins of the 3s appliance plug, to determine the identity of the appliance.
The information transmitting means for transmitting the power consumption information is arranged to transmit the determined pattern information together with the power consumption information.
According to the invention there is further provided a system for providing information about power consumption of a plurality of appliances, the system comprising a plurality of power consumption measuring devices, each as defined above, and a bridge module for receiving the power consumption information from each of the plurality of power consumption measuring devices, wherein the bridge module is arranged to transmit the io information over the Internet to a computer server for presentation on a website.
The computer server may be arranged to determine the identity of each appliance from the pattern associated with the plug of the appliance.
The pattern may be arranged on a label affixed to the plug.
According to an aspect to the invention, there is provided a label for an electrical plug, a label having openings through which the plug pins are arranged to pass, the label further comprising a predetermined pattern which is capable of being read by a sensor in a socket into which the plug is inserted to permit identification of the appliance. The pattern may comprise a plurality of regions that reflect or absorb light provided by the sensor.
Embodiments of the invention will now be described by way of example with reference s to the accompanying drawings, in which: Figure 1 is an overview of a system according to the invention; Figure 2 illustrates the form of a power consumption measurement device that forms part of the system of Figure i; Figurc 3 is a system diagram of thc powcr consumption mcasurcmcnt device of Figure 2; Figure 4 is an example of a sensor device pattern on the face of the socket of the power consumption measurement device according to the invention; Figure 5 is an example implementation of a sensor device as shown in Figure 4; Figure 6 is a diagram showing a plug label according to the invention; Figures 7A and 7B are diagrams showing plug labels illustrating various pattern of dots that can be read by the sensor device pattern shown in Figure 4; and Figure 8 is a flow chart explaining the operation of the system according to the invention.
Referring to Figure 1, a system 1 according to the invention comprises one or more power consumption measurement devices, also referred to as smart plugs 2. A plurality of smart plugs a, 2b, ..., 2n are shown, each of the plugs being connected to the household electricity supply (mains) 3. In one embodiment, data from each of the smart plugs is transmitted externally over the mains using a power line communication (PLC) scheme. A PLC to Ethernet bridge 4 is also connected to the household electricity supply to allow connection to an IP network such as the Internet 5 via, for example, an RJ45 socket. The PLC to Ethernet bridge converts data bidirectionally between the internet and the PLC system, so that the smart plugs can be controlled via the Internet. The data measured by the smart plugs is sent to a computer system 6 where it is processed and can subsequently be accessed by the consumer over the Internet, for example showing the actual cost in monetary terms, rather than just power units (eg. kwh), of running each appliance within the home.
Each consumer may have an account on the computer system 6 which holds information such as the consumer's current energy tariff, to allow the calculation of the monetary cost of each appliance.
Figure 2 shows one example of a smart plug according to the invention. The smart plug 2 includes a socket 10 for receiving an appliance plug (not shown), status indicators 12, for example power on indicators, a plug 13 for plugging the smart plug into a conventional power socket (not shown) and optionally a USB interface 15 for receiving and powering external sensors and devices. The appliance plug and power socket are conventional devices, for example a 3-pin plug and corresponding socket in the UK, but not limited to this configuration.
Figure 3 illustrates the internal structure of the smart plug 2 shown in Figure 2. The smart plug comprises a data measurement circuit 16 for measuring the voltages and current necessary to calculate power consumption, a data transmission circuit 17 for transmitting information via the mains or, optionally, wirelessly, memory 18, for example flash memory, a microprocessor 19, an optional USB interface 20 and an API 21 running under the control of the microprocessor 19 to allow external access to the smart plug functionality.
When an electrical appliance is plugged into the smart plug, data on power consumption is collected, stored in flash memory and transmitted via the electrical wiring system (mains) within the house to the bridge plug 4 which transmits the data over the internet to a server, where the data is processed and can subsequently be accessed by the consumer. In addition to transmission via the house's electrical system, the data can also be transmitted via a wireless network with wireless transmitter/receivers built into each smart plug.
Long term analysis of power usage by an appliance requires that the smart plug is aware of the identity of the appliance. Without this information, patterns of power usage at different times cannot be determined, particularly since a consumer may unplug one appliance from a smart plug and plug in another.
Figure 4 illustrates a sensor array 25 on the face of the device socket lo. Figure 5 shows an example implementation of one sensor 26 in the sensor array.
Each sensor 26 comprises a light guide 27, for example, made of glass or plastic, comprising a single pipe section 27a passing through the socket face 28, the single pipe section being connected to first and second branches 271), 27c. An infrared light emitter 29 is arranged at the end of the first branch 27b and a photodetector 30 arranged at the end of the second branch 27c. Light passes from the emitter 29 through the socket face 28 and is reflected from the plug face 31, the reflected light being detected by the photodetector 30.
The infra-red light emitter 29 is arranged to emit a continuous series of pulses under the control of a control circuit 32 towards the appliance plug plugged into the socket.
The light is absorbed by or reflected from a corresponding region 33 on the plug surface and the reflected signal is detected by the photodetector.
Figure 6 illustrates a label 35 to be applied to the surface of the plug, the label including a predetermined pattern to identify a particular appliance. The label may be made of paper, plastic or any suitable material that allows the application of a pattern.
Figure 6 shows four possible dot positions 36 at which a reflective or absorbing portion may be placed to indicate the presence or absence of a dot in that region. For example, where a reflective portion is attached at the dot position, the irifra red light is reflected more strongly from that dot position than from the surrounding area, which indicates the presence of a dot. Alternatively, a black portion or dot could be placed in the region which absorbs infra red light provided by the sensor. In this case, the absence of a strong reflection indicates the presence of a dot in that region.
By combining a plurality of dots a number of different appliances can be identified in accordance with a standard binary code. For example, by providing four regions which may or may not contain a dot, sixteen different appliances can theoretically be io identified ranging from the absence of all dots (binary o) to the presence of four dots (binary 15). In practice, a smaller number of appliances may be identifiable since it may be desirable to exclude the presence of all dots or no dots to differentiate from a plug that does not include a label according to the invention.
While the above embodiment has been described with four dots, the number of dots is of course not limited and, for example, five dots would enable the identification of up to thirty-two (practically, 30) appliances.
As an example, Figure 7A illustrates a label for a microwave having, for example, two dots 37 disposed diagonally, while Figure 7B illustrates a label for a washing machine having two dots 38 disposed in an alternative diagonal configuration. Figure 7A represents, for example, appliance id 5 (binary code oioi), starting from the top left and working clockwise, while Figure 7B represents appliance id 10 (binary code iorn).
However, the appliance ids are clearly not limited to these specific codes.
Referring to Figure 8, the installer places the label for a given appliance over the pins of the appliance plug for each of the appliances in the home (step Si). Once the system is commissioned (step S2) data for the electrical consumption of each of the appliances is collected, stored and transmitted over the internet together with thc identity of each appliance according to the binary coding (step S3). For example, for the washing machine, the appliance data is transmitted along with the identification code 10. The data is received by the computer system 6 and processed and stored against the appliance id (step S4).
Should the householder unplug one appliance and connect another, the appliance code changes and the stored data is then associated with the different code. This permits ong term analysis of data for each different appliance.
Although the embodiments of the invention have been described in connection with a specific method of detecting the dot pattern, it will be apparent to the skilled person that many variants are possible within the scope of the invention as defined in the claims. For examp'e, while it has been described that infra-red light is absorbed or reflected by a pattern of dots, the term dots does not imply any particular shape and io different types of light might be used and different levels of absorption/reflection are possib'e and would be fully impementable by the skilled person within their range of expertise. The types of appliances that cou'd be monitored are not limited and could for example include televisions, air conditioners, washing machines, ovens, microwaves, ketfles and so on.

Claims (1)

  1. <claim-text>Claims A power consumption measurement device comprising: a plug for plugging the device into a power socket, a socket for receiving an electrical plug connected to an appliance; means for calculating power consumption of the appliance; means for transmitting information relating to the power consumption; and means for identifying the appliance that is plugged into the device.</claim-text> <claim-text>2. The device of claim i, wherein the identifying means comprise: means for transmitting light towards the appliance plug; and means for receiving a corresponding signal reflected from the appliance plug.</claim-text> <claim-text>3. The device of claim 2, wherein the light transmitting means comprises a plurality of light emitting devices arranged to transmit light via the socket face.</claim-text> <claim-text>4. The device of claim 3, wherein the light transmitting means comprises a pipe having an outlet at the socket face, a first branch of the pipe extending to at least one of the light emitting devices, the pipe further comprising a second branch extending to a detector for detecting the reflected light.</claim-text> <claim-text>5. The device of any one of the preceding claims, further comprising means for determining a pattern arranged on a surface of the appliance plug to determine the identity of the appliance.</claim-text> <claim-text>6. The device of claim 5, wherein the information transmitting means for transmitting the power consumption information is arranged to transmit the determined pattern information together with the power consumption information.</claim-text> <claim-text>7. A system for providing information about power consumption of a plurality of appliances, the system comprising: a plurality of power consumption measuring devices, each according to any one of the preceding claims; a bridge module for receiving the power consumption information from each of 3s the plurality of power consumption measuring devices, wherein the bridge module is arranged to transmit the information over the Internet to a computer server for presentation on a website.</claim-text> <claim-text>8. The system of claim 7, wherein the computer server is arranged to determine the identity of each appliance from the pattern associated with the plug of the appliance.</claim-text> <claim-text>9. The system of claims, wherein the pattern is arranged on a label affixed to the plug.to. A label for an electrical plug, the label having openings through which the plug pins are arranged to pass, the label further comprising a predetermined pattern which is capable of being read by one or more sensors in a socket into which the plug is inserted to permit identification of the appliance.ii. The label of claim to, wherein the pattern comprises a plurality of regions that reflect or absorb light provided by a light transmitting means at the socket.12. The label of claim 10 or 11, wherein a predetermined pattern of regions is associated with a predetermined appliance.</claim-text>
GB1211547.3A 2011-06-29 2012-06-29 Power consumption measurement device Expired - Fee Related GB2492482B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB1111090.5A GB201111090D0 (en) 2011-06-29 2011-06-29 Shimmer smart plug

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GB201211547D0 GB201211547D0 (en) 2012-08-15
GB2492482A true GB2492482A (en) 2013-01-02
GB2492482B GB2492482B (en) 2013-08-28

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GBGB1111090.5A Ceased GB201111090D0 (en) 2011-06-29 2011-06-29 Shimmer smart plug
GB1211547.3A Expired - Fee Related GB2492482B (en) 2011-06-29 2012-06-29 Power consumption measurement device

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GBGB1111090.5A Ceased GB201111090D0 (en) 2011-06-29 2011-06-29 Shimmer smart plug

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103969618A (en) * 2013-10-18 2014-08-06 深圳市科陆电子科技股份有限公司 Detecting device and detecting method of smart sockets
CN104135407A (en) * 2014-08-12 2014-11-05 中国联合网络通信集团有限公司 Electrical apparatus operational monitoring method, server and system
WO2016012736A1 (en) * 2014-07-21 2016-01-28 Kingsley, Naomi Power consumption measurement device, system for providing information about power consumption of a plurality of appliances and method of determining power consumption
CN111903011A (en) * 2018-02-05 2020-11-06 新加坡国立大学 Smart electrical receptacle/outlet apparatus, systems, and related methods

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US20090192927A1 (en) * 2006-09-13 2009-07-30 Berg Michel J Enhanced power outlet system incorporating a smart receptacle
US20110098867A1 (en) * 2009-10-25 2011-04-28 Jonsson Karl S Automated load assessment device and mehtod
GB2475565A (en) * 2009-11-24 2011-05-25 Univ Montfort Identifying an appliance by data on the earth pin of its plug
US20120016605A1 (en) * 2010-07-16 2012-01-19 Powertech Industrial Co., Ltd. Carbon emission tracker and tracking system
US20120013442A1 (en) * 2010-07-16 2012-01-19 Powertech Industrial Co., Ltd. Power cord
US20120045926A1 (en) * 2010-08-20 2012-02-23 Powertech Industrial Co., Ltd. Identifiable plug and plug assembly having the same
GB2483304A (en) * 2010-09-06 2012-03-07 Sony Corp Managing electrical energy consumption of devices over a time frame
US20120060044A1 (en) * 2010-05-10 2012-03-08 Greenwave Reality, Pte, Ltd. Power node with network switch

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Publication number Priority date Publication date Assignee Title
US20090192927A1 (en) * 2006-09-13 2009-07-30 Berg Michel J Enhanced power outlet system incorporating a smart receptacle
US20110098867A1 (en) * 2009-10-25 2011-04-28 Jonsson Karl S Automated load assessment device and mehtod
US20110095608A1 (en) * 2009-10-25 2011-04-28 Jonsson Karl S Power node for energy management
GB2475565A (en) * 2009-11-24 2011-05-25 Univ Montfort Identifying an appliance by data on the earth pin of its plug
US20120060044A1 (en) * 2010-05-10 2012-03-08 Greenwave Reality, Pte, Ltd. Power node with network switch
US20120016605A1 (en) * 2010-07-16 2012-01-19 Powertech Industrial Co., Ltd. Carbon emission tracker and tracking system
US20120013442A1 (en) * 2010-07-16 2012-01-19 Powertech Industrial Co., Ltd. Power cord
US20120045926A1 (en) * 2010-08-20 2012-02-23 Powertech Industrial Co., Ltd. Identifiable plug and plug assembly having the same
GB2483304A (en) * 2010-09-06 2012-03-07 Sony Corp Managing electrical energy consumption of devices over a time frame

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103969618A (en) * 2013-10-18 2014-08-06 深圳市科陆电子科技股份有限公司 Detecting device and detecting method of smart sockets
WO2016012736A1 (en) * 2014-07-21 2016-01-28 Kingsley, Naomi Power consumption measurement device, system for providing information about power consumption of a plurality of appliances and method of determining power consumption
CN104135407A (en) * 2014-08-12 2014-11-05 中国联合网络通信集团有限公司 Electrical apparatus operational monitoring method, server and system
CN111903011A (en) * 2018-02-05 2020-11-06 新加坡国立大学 Smart electrical receptacle/outlet apparatus, systems, and related methods
CN111903011B (en) * 2018-02-05 2022-07-19 新加坡国立大学 Smart electrical outlet/socket device, system and related method

Also Published As

Publication number Publication date
GB201111090D0 (en) 2011-08-10
GB201211547D0 (en) 2012-08-15
GB2492482B (en) 2013-08-28

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20170629