1. Technical Field
This invention relates to the collection and compilation of data to help understand power usage trends. More particularly, the invention relates to the collection and compilation of such data to help make policy decisions in connection with reducing the carbon footprint of in-home power consuming equipment.
2. Description of the Background Art
Communication using power line has been limited, until recently, to a few local area networks (LANs) within homes or offices or, at best, within apartment complexes. Power line communication has also been used in a limited number of applications where other types of communication methods do not provide sufficient security and remote connectivity, such as for power line control applications.
Basic devices for connecting to the power line for communication and power supply have been designed and are used to provide service within LANs. But, due to the availability of more efficient competing technologies, the infrastructure for power line communication (PLC) has never been developed enough to make it a mainstream technology. This can be attributed to various reasons, including the higher cost of available devices, the lack of suitable devices for communication using the PLC technology, etc. The result has been that PLC has not found a path for growth in the standard voice and data communication field catered to by technologies such as xDSL, cell phones, and satellite communications.
Today there is an emerging need for the ability to collect information and provide remote control capability for appliances in the home to reduce the carbon footprint of the home. There is also a need to use such collected information, for example information concerning energy use, to enhance our understanding of power and other utility use trends, and thus develop a public policy that leads to optimum use of resources in a way that reduces the carbon footprint of the home. This would require the ability to capture and compile the data collected and to convert it to a usable form, if such data is to be used to enhance our understanding and provide meaningful inputs to national level utility policy planning.
An embodiment of the invention provides in-home or office data collection, with the capability to consolidate the collected information locally from groups of homes, and to supply this information to a national policy making body. This approach caters to the collection and compilation of the needed information through an available power line communication (PLC) network of the type that enables communication and streaming media capability in the home.
Thus, in an embodiment a green energy smart-grid residential system collects power usage information from a plurality of connected homes by progressively integrating information collected from each of the individual homes using a group of sensor devices; and a method that compiles such information to a usable format via distributed computers. The in-home sensor devices for collecting power usage information can include an intelligent master device, and one or more of a communication and power switch device, a ZigBee® enabled switch device, and a power control switch device, each of which typically operate over a PLC network. The master device collects, compiles, and communicates the collected data to the Web or outside world. The information from a number of these homes in a local area is consolidated using local distributed processors on the Web and provided to a main processing unit for compilation and integration with other regional inputs for use in national policy decision making.
An embodiment of the invention provides a green energy, smart-grid residential system that collects power use information from a plurality of connected homes by progressively integrating information that is collected from each of the individual homes via the use of a group of sensors. Such information is compiled to a usable format using distributed computers. The in-home sensors that are used to collect power usage information include an intelligent master device and one or more of a communication and power switch, a ZigBee® enabled switch, and a power control switch, each of which typically operate over a power line communication (PLC) network. The master device collects, compiles, and communicates the collected data to the Web. The information from a number of homes in a local area is consolidated using local distributed processors on the Web and provided to a main processing unit for compilation and integration with other regional inputs for use in national policy decision making.
The development of green technologies and the need for monitoring and control of the carbon footprint of homes and offices has created a need to assess power and other utility use patterns remotely. This requires the ability to measure power use and determine the impact that any policy decisions may have in affecting such use. It is also necessary to have the ability to supervise and control the use of power remotely and to provide the consumer with the ability to monitor and control power use on a micro level. The consumer is able to exercise the necessary constraints on use if the proper information, incentives, and tools are provided. The usage pattern and collected utility data on a macro level is needed for use in developing policies that are beneficial to the overall reduction in the carbon footprint at the home and office level, as well as on a national level. Empowering the individual and the society to exercise the necessary constraints and controls by monitoring the power and other utility use is an area where an in-home or office power line communication (PLC) network can be effectively and optimally used.
The PLC network is a network that is capable of collecting and compiling the power use of connected appliances and also collecting other utility use information. The detailed operation of the sensor units and the in-home PLC network are described in U.S. patent application Ser. No. 13/197,623, filed Aug. 3, 2011 which, in turn, claims priority to U.S. patent application Ser. No. 13/153,194, filed Jun. 3, 2011 which, in turn, claims priority to U.S. patent application Ser. No. 13/032,454, filed Feb. 22, 2011, each of which claim inventions made by the same inventors and assigned to the same assignee, and each of which is incorporated herein in its entirety by this reference thereto.
The SW 100 has a power plug that is connected to the AC power distribution lines 101 through a power meter and relay 104.
The relay in the power meter and relay module 104 provides the capability to switch on or switch off the supply to the power plug 103 remotely. It also allows for controlling the power supplied to the plug, where a power control module is included in the power meter and relay module 104.
The power meter in the power meter and relay module 104 monitors the power usage by the appliances connected to the power plug. The power meter and relay module 104 is connected via bi-directional communication links 106 to a microcontroller (MCU) 107 similar to an Intel® 8051. The microcontroller accepts the information on the power usage and compiles it prior to transfer to the broadband communication module 109. The power meter in the power meter and relay module 104 continuously monitors the flow of power to the power plug 103 and feeds the information to the MCU 107 through the communication links 106. The power usage information is compiled by the MCU 107 and sent to a broadband communication module 109 via communication links 108 which are connected to a UART enabled port on the communication module 109 for onward transmission over the PLC network.
The ETH 200 is a combination of two sub-units: a broadband PLC sub-unit, and a SW sub-unit similar to SW 100.
The SW sub-unit in this instantiation (ETH 200) uses broadband communication for information transfer on power usage and remote control of connected appliances over an Internet connection.
The broadband PLC Ethernet bridge adaptor module includes a 200 Mbps communication sub-unit for broadband sharing including, for example, on line gaming, voice over Internet protocol (VoIP), Internet protocol television (IPTV), and for audio and video streaming.
In
The communication module 209, in this case, is common for communication and for power usage and status information transfer and control. Here, the communication module 209 is used to convert the incoming data stream into the broadband format used for PLC. The switch sub-unit of the ETH 200 operates similar to the SW 100. The power usage and power plug status information collected by the power meter and relay module 104 are also passed through the MCU 207 to the broadband communication module 209 for conversion to an output information stream using the broadband PLC format. Both the data stream and the power usage and status information stream are then transferred from the communication module 209 to the power distribution lines 101 in the home or office through the coupler filter module 111. Similarly, the communication module 209 receives the incoming communication data streams and the command and control instructions that are sent to the ETH 200 and passes them to the respective modules of the ETH 200 for processing.
The broadband communication module 209 is also enabled with a unique address so that communication to it and from it can be identified. Because the broadband communication elements are bidirectional, the broadband communication module can send and receive full duplex broadband communication between itself and any communication device connected to the RJ45 connector 215 via the MCU 207. Similarly, the communication module 209 can send out information streams comprising the power usage and status of the plug to the AC power distribution lines 101, and receive command and control information streams from the AC power distribution lines 101.
The received data and command and control information streams are decoded, the address is checked to see if it correct, and the streams are decrypted, if needed, based on the address. The communication module 209 then converts the received data stream into an analog format and sends it through the Mil interface of the MCU for transfer through the PHY to the RJ45 module 215, and thence to the connected customer device. Similarly, the communication module sends the command and control information to the MCU 207 for interpretation. The MCU 207 then generates instructions to the power meter and relay module 104 that are used by the power meter and relay module 104 to control the power flow to the power plug 103, and thence to the appliance connected to the power plug 103.
The use of multiple ETH 200 devices within a home or office enables PLC local area network connectivity within the home or office. Here, the disclosed use of broadband communication within the PLC LAN, using the ETH devices, enables streaming media delivery capability and IPTV delivery capability for connected display devices, connected to appropriate communication units within the PLC LAN.
The Z-SW 300 has a power plug 103 that is connected to the AC power distribution lines 101 through a power meter and relay 104. The relay in the power meter and relay module 104 provides the capability to switch on or switch off the supply to the power plug 103 remotely. It also allows for controlling the power supplied to the plug when a power control module is included in the power meter and relay module 104.
The power meter in the power meter and relay module 104 monitors the power usage by the appliances connected to the power plug. The power meter and relay module 104 is connected via bi-directional communication links 106 to a microcontroller (MCU) 107. The MCU 107 accepts the information on the power usage from the power meter and relay module 104 and compiles this information prior to transfer to the broadband communication module 109. The power meter in the power meter and relay module 104 continuously monitors the flow of power to the power plug 103 and feeds the information to the MCU 107 through the communication links 106. The power usage information is compiled by the MCU 107 and sent to a broadband communication module 109 via communication links 108 connected to a UART enabled port on the communication module 109, thus enabling the compiled data to be transmitted out.
The operational commands for the ZigBee® unit 310 of the Z-SW 300 are received over the power line at the broadband communication module 109 as a data stream. These commands are demodulated, decrypted, and provided to the MCU 107 over the communication links 109 via the UART enabled port. The MCU 107 converts the data into instructions and passes them on to the ZigBee® unit 310 via the bidirectional port 311 over the link 312. The ZigBee® unit 310 sends out commands to the ZigBee® technology enabled appliance connected to the Z-SW 300, based on received instructions, to execute operational commands of reading meters, changing temperature settings, etc. The response after the command has been executed is sent back to the built-in ZigBee® unit 310 by the ZigBee® technology enabled appliance, which then transfers it to information and passes it on to the MCU 107 via the bidirectional link 312 through the port 311. The MCU collects the information and forwards it with the address to be responded to by the broadband communication module 109 via communication links 108 connected to the UART enabled port on the communication module 109.
In the example of
The communication module 109 sends out the modulated the data stream over the broadband connection 110 to a coupler filter 111 which is connected to the AC power distribution lines 101 by power line connections 112. The coupler filter acts as a bi-directional high pass filter to filter out power line frequency interference from the communication module. The broadband communication module 109 also demodulates the communication stream received over the AC power distribution lines 101 to provide the command and control instructions for power control and operational control to the MCU 107. The MCU 107 interprets any received command and control instructions to the power meter and instructs the power meter and relay module 104 for controlling the power flow to the power plug 103. The MCU 107 also interprets any operational command and instructions for the ZigBee® unit 310 and passes on these to the ZigBee® unit 310 to be directed to the ZigBee® technology enabled connected appliances.
In this implementation, a 32 bit MCU is provided as a system on chip (SOC) 407. The SOC 407 implementation provides for higher processing power and integration of modules with the MCU. The SOC 407 integrates a PHY into the MCU, allowing the RJ45 connector 415 to connect the customer's modem device directly to a port on the SOC 407. This connection is a 10/100 base TX, auto-negotiation Ethernet port and provides the gateway to the Internet through any connected modem for the PLC communication from all the connected ETH units within the PLC network. The typical communication module of the MST 400 uses, for example, any one chosen modulation scheme from the list of modulation protocols comprising OFDM, QAM1024/256/64/16, DQPSK, DBPSK, and ROBO, for sending and receiving communication data streams to the connected ETH units within the PLC network. The frequency band used for broadband PLC is 2 to 30 MHz, with a data transfer rate of up to 200 Mbps.
The gateway provided by the MST 400 is also used to send out the collected and processed information on the power usage and utility usage, as well as the status of the power monitoring and relay units within the PLC, for enabling control of the power plug 103. Any remote control commands are received from the Web via the gateway provided by the MST 400 for transfer to connected SW 100, ETH 200, and Z-SW 300 units for control of the power flow to connected appliances. In the MST 400, the modulation, frequency band, and data rates are the same as those used for the information and command transfer within the PLC network. The SOC 407 is enabled to enforce all communication related security protocols associated within the PLC network.
All data and power monitoring and control information is sent to the SOC 407 by the connected SW 100, Z-SW 300, and ETH 200 within the home or office via the power distribution lines 101 through the coupler filter module 111 and the communication module 409. The communication module 409 of the MST 400 is used to demodulate the incoming streams and decrypt them prior to transferring them to the MCU that forms part of the SOC 407. The SOC 407 receives the information and processes it, by compiling and consolidating it, for outward transmission to the Web.
The SOC 407 also has a memory 417 associated with it, typically connected to a memory port on the SOC 407. The memory 417 enables the SOC 407 to store the received power monitoring and control information prior to processing and compiling the information. The memory 417 is also used to store the compiled information to transmit it out through the gateway optimally when the bandwidth usage for data communication is low. The memory 417 also stores the transaction history with a timestamp for the data communication and power usage information transmitted out, and for incoming remote commands sent to the connected SW 100 and ETH 400 within the home or office. The memory 417 provides for tracking of performance and remote debugging capability with pinging and path tracking capability for the MST 400, as well as the connected SW 100 and ETH 200.
The MST 400 provides a power plug 103 of its own that is connected to the power distribution lines 101 through a power meter and relay 104 for connecting any needed appliance with the necessary power monitoring and control capability. This monitored information is sent to the MCU, which is implemented as an SOC 407, to be combined with the information received over the PLC LAN over the power distribution lines 101 through the coupler filter module 111 and the communication module 409. This collected information forms part of the power monitoring information input to the MST 400. The power monitoring information is stored in the memory and compiled and processed for transmission to the monitoring sources in the WAN through the modem connected to the SOC 407 port with the RJ45 connector 415. The transfer of the compiled information is typically done as in store and forward manner with storage in the memory 417 to enable best use of the available bandwidth of the gateway, as discussed earlier.
Remote control commands received via the gateway are received through duplex port with the RJ45 connector 415 from the connected modem. These control commands are interpreted by the SOC 407 of the MST 400 and sent to the respective SW 100, ETH 200, or Z-SW 300 to which it is addressed over the broadband PLC network through communication module 409 and coupler filter module 111 for necessary action at the addressed receiving units.
Typical Connection for the Devices within the Home or Office to Enable Collection and Compilation of Power and Utility Data
The SW unit 541 shown as part of the PLC network 500 is used where the requirement is for power connection capability with monitoring and control, but without the need to connect a communication device into the PLC network. In the PLC network 500, the SW 541 is used to connect an oven 523 to the power line with power monitoring capability.
The ETH devices 551 to 554 allow communication devices to be connected to the PLC LAN, while providing a power plug or power source which can be monitored and controlled where needed. In the PLC network 500, the ETH 551 is connected to a telephone system 520, the ETH 552 is connected to the computer 522, the ETH 553 is connected to an IP-TV 524, and the ETH 554 connected to the home security system 525.
With regard to the Z-SW devices in the PLC network 500, some of these devices are used to provide power to connected appliances and to control the operation of the appliance, as in the Z-SW 561 which is connected to the ZigBee® enabled refrigerator 526, and the Z-SW 562 which is connected to the home climate control unit 527, and other devices are used to collect usage information of a utility for billing and monitoring, as in the case of the Z-SW 563 which is connected to the ZigBee® enabled water meter and the Z-SW 564 which is connected to the ZigBee® enabled gas meter.
There is a single MST for each in-home or office PLC network. In the PLC network 500, the MST 531 is connected to a router 521 that is connected to the xDSL or other broad band access gateway 510 to the Internet/WAN 505. This establishes a connection to the WAN 505, enabling the PLC network 500 to communicate with the outside world in accordance with security and connection rules. The power plug of the MST is used provide power supply with power monitoring and control capability to the router 521.
Multiple SW, Z-SW, and ETH devices with a single MST device can be used to establish the power and utility monitoring and control for the home and provide connectivity for data communication using the PLC network.
Because communication connections to the WAN 505 and within the PLC network 500 are all broadband enabled, the system is able to provide steaming media capability within the PLC network 500 using the ETH 552 connected to computer 522 and the ETH 553 connected to the IP-TV 524. The PLC network 500 can access and enable streaming media delivery to the ETH 552 and ETH 553 connected display devices, through the MST 531 via the router 521 connected to the WAN 505.
The MST 531 is also used as a collection and compilation point for the power and utility usage. Information concerning power usage and other utility usage within the home over pre-specified periods of time that is received from the connected SW 541, Z-SW 561 to 564, ETH 551 to 554, and MST 531 is consolidated and compiled using the capability in the MCU 407 of the MST 531, and stored in the memory module 417 of the MST 531. Each of the connected devices SW 541, ETH 551 to 554, and Z-SW 561 to 564 is provided with a unique identity number to enable traceability of the monitoring and control of the collected monitoring and control functions.
Because there is connectivity with control capability on each of the SW 541, Z-SW 561 to 564, ETH 551 to 554, and MST 531 devices, the power delivery through each of these SW and ETH units can be monitored and controlled from any of the communication devices connected to the PLC network. The collected information is compiled and stored in a traceable format in the memory 417 of the MST 531 using the identity number for traceability.
A compilation of the power and utility information 700 collected from a home over the PLC network 500 from the connected appliances is shown in
Similar to Home Group 1, the collected and compiled data from each home in Home Group 2602 is sent to the Group2 power and utility consolidation unit 612, and the information from Home Group 3603 is sent to the Group3 power and utility consolidation unit 613. Each home in a home group provides to the group power and utility consolidation system associated with it the details of the connected power and utility usage, typically in the format of compilation of power and utility information 700, as shown in
Using WAN based computing capability in the local area reduces compilation costs associated with large capacity dedicated systems that are needed to do the collection, storage, tracking, and compilation of data received from homes in a home group. This data received from all the homes in the Home Group 1601, for example, is then stored, compiled, and consolidated by the Group1 power and utility consolidation unit 611.
A typical output format for the consolidated information, shown in
The local collected and compiled data from the various group (1, 2, 3) power and utility consolidation units, such as 611, 612, and 633 is then sent to the next level, which may be the state or national level, for consolidation. The ultimate aim of such a hierarchical system is to provide traceable power and utility usage information to state and national level policy makers. In
The in-home PLC network is set up with the necessary sensors to enable collection of power usage information using the power plugs enabled for monitoring and utility usage measurement through the ZigBee® technology using ZigBee® enabled meters connecting to the sensors (S901).
The sensors deliver the collected power and utility usage information to the in-home MST device over the PLC network for storage and compilation (S902).
A format is established for the MST to generate a consolidated compilation of the received power and utility usage information which retains the capability for information traceability to the collecting sensors (S903).
An Internet gateway is set up and established from the in-home MST to the WAN for information transfer to and from the WAN based units (S904).
A group power and utility consolidation unit is set up and configured, typically in the WAN, to receive power and utility usage information from multiple local homes, thus forming a home group having sufficient CPU computational power and storage capability to provide for consolidation and storage of the received power and utility usage information (S905).
Establish a data format on the group power and utility unit for the compiled power and utility usage information received from the individual MSTs of the home group. The data format being capable of providing traceability and authentication of the original collected data by enabling identification of the home and the sensor within the home used to collect the power or utility usage data. S906.
A national green energy planning system is established, having enough computing power to collect and consolidate the power and utility information received from the multiple local area group power and utility consolidation units across the nation to create a green energy data base, while keeping the traceability of the information collected (S907).
The national green energy planning system is further enabled to generate reports for the policy makers to assimilate and define effective policy to achieve reduction of greenhouse gases at the home and at national level (S908).
The power usage within a home is collected by the connected sensor devices that include SW, Z-SW, ETH, and MST devices having power plugs and the other utility usage, as collected by the Z-SW using the ZigBee® technology from ZigBee® enabled meters (S1001).
The information is sent by the collecting sensors in the home over the PLC network of the home to the MST device of the home for collection and compilation and storage (S1002).
The MST of the home receives the information sent over the PLC network of the home. This information is accepted, stored, compiled, and stored again in a deliverable format, keeping the traceability of the information to individual appliance or meters in the home (S1003).
The MST transmits the compiled information through the connected Internet gateway and the WAN to a local group power and utility consolidation unit. Such a group power and utility consolidation unit, having sufficient computing power, is established typically in the WAN for each of such local group of homes to which a set of local homes belongs (S1004).
The group power and utility consolidation unit receives the information on power usage from the MST devices of each of the homes in the home group and consolidates the information received. The consolidated power and utility information in the consolidated form is designed to maintain the traceability to the original collection point for authentication (S1005).
The group level consolidated information is sent over the Internet to a national green energy planning system established, with sufficient computing and memory capability, to collect and compile the national level power and utility usage information (S1006).
The national green energy planning system receives the power and utility information sent by the group power and utility consolidation units covering all different local areas in the nation (S1007).
The national green energy planning system combines the inputs from various home groups, stores them, and consolidates the power and utility usage information to develop a national power and utility usage data base with full traceability of information to the collection points for verification of data (S1008).
The national power and utility usage information database is used to generate reports for assimilation by the policy makers, who can then define an effective national policy on green energy to reduce the power and utility usage. This may include changing the cost structure for the consumer, providing incentives for converting to more efficient appliances, and implementing incentive schemes for reduced utility usage. Such policies can be oriented at reducing the overall power and utility usage of homes and hence reduce the carbon footprint of the homes and the nation (S1009).
The green energy smart-grid residential system is also capable of doing comparative studies and providing sampling results of possible policy changes and incentive plans proposed for improving the impact policy being proposed.
Typically, before any new incentive plans are introduced to induce the consumer to change his behavioral pattern of power and utility usage, the plan must be tested out for effectiveness on a sample population. For example, providing an incentive to the consumer to change from using incandescent bulbs to low energy fluorescent bulbs, or providing an incentive to change from high water flow flush to a low water flow flush, etc. It is very important to test this traceability. One home group, e.g. Home Group 1601, may be used as a test subject while Home Group 2602 and Home Group 3603 are used as standards. When a monetary incentive or other type of incentive scheme is provided to the Home Group 1601 to change from high water flow flush to a low water flow power flush, the data collected from the water meter over a period of time shows the effectiveness of the incentive to push the customer to change his flush to a low water flow flush. It also shows the impact the incentive has in reducing the overall water usage within the selected group. If these results show that the incentive scheme is cost effective, then it can be considered for implementation on a national level as part of national policy on water conservation policy. Such checks can also be used to decide the most effective policies from a number of available policy alternatives. The capability to trace the usage of power and other utility within a home, and to identify homes which implement specific upgrades and trace its impact, becomes critical in these studies. Such a capability is provided by the disclosed invention.
A person skilled-in-the-art would readily appreciate that the invention disclosed herein is described with respect to specific exemplary embodiments of the devices and systems currently used. It is also possible to provide other formats for presentation of the collected data and information, which may be more in line with the policy maker's needs. However, these described embodiments should not be considered limitations on the scope of the invention. Specifically, other implementations of the disclosed invention are envisioned and hence the invention should not be considered to be limited, to the specific embodiments discussed herein above. The system may be implemented with processing in dedicated central computing facility, in distributed computing facility in the WAN, or a combination of the two. The units, devices, and systems may be implemented as hardware and/or software implemented and running over hardware such as computers, distributed or otherwise, as assembly of individual components, as a combination of components and integrated circuits, or SOCs. The invention should not be considered as being limited in scope based on specific block level details, but should be considered on the basis of current and future envisioned functionality.
Although the invention is described herein with reference to the preferred embodiment, one skilled in the art will readily appreciate that other applications may be substituted for those set forth herein without departing from the spirit and scope of the present invention. Accordingly, the invention should only be limited by the Claims included below.
This application a continuation-in-part of U.S. patent application Ser. No. 13/197,623, filed Aug. 3, 2011, which, in turn, claims priority to U.S. patent application Ser. No. 13/153,194, filed Jun. 3, 2011, which application claims priority to U.S. patent application Ser. No. 13/032,454, filed Feb. 22, 2011, each of which is incorporated herein in its entirety by this reference thereto.
Number | Date | Country | |
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Parent | 13197623 | Aug 2011 | US |
Child | 13270896 | US | |
Parent | 13153194 | Jun 2011 | US |
Child | 13197623 | US | |
Parent | 13032454 | Feb 2011 | US |
Child | 13153194 | US |