CA2484960A1 - Status indicator - Google Patents
Status indicator Download PDFInfo
- Publication number
- CA2484960A1 CA2484960A1 CA002484960A CA2484960A CA2484960A1 CA 2484960 A1 CA2484960 A1 CA 2484960A1 CA 002484960 A CA002484960 A CA 002484960A CA 2484960 A CA2484960 A CA 2484960A CA 2484960 A1 CA2484960 A1 CA 2484960A1
- Authority
- CA
- Canada
- Prior art keywords
- load
- voltage
- amplifier
- operating state
- current
- Prior art date
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
Abstract
A status indicator indicates an operating state, including an electrical malfunction, of an electrical load that is located and controlled from locations remote from a monitoring location.
Claims (16)
1. An indicator to signal an operating state of a load, said indicator comprising a current sensor outputting a first signal in response to a voltage applied to said load application of said voltage is accompanied by a current flow, and outputting a second signal when a voltage applied to said load is not accompanied by a flow of current.
2. The indicator of claim 1 wherein said current sensor comprises an amplifier having a supply voltage responsive to said voltage applied to said load, an amplifier input responsive to a flow of current to said load, and an output responsive to said supply voltage and said amplifier input.
3. The indicator of claim 2 wherein said amplifier input responsive to a flow of current to said load comprises a voltage induced in a secondary winding of a current transformer by a flow of current in a primary winding, said primary winding comprising a conductor of current from a source to said load.
4. The indicator of claim 1 wherein said current sensor comprises an amplifier having a supply voltage responsive to said voltage applied to said load, an amplifier input responsive to a flow of current to said load, and an output, said output having:
(a) a first value when said supply voltage is present and said flow of current to said load exceeds a threshold flow; and (b) a second value when said supply voltage is present and said current to said load does not exceed said threshold.
(a) a first value when said supply voltage is present and said flow of current to said load exceeds a threshold flow; and (b) a second value when said supply voltage is present and said current to said load does not exceed said threshold.
5. The indicator of claim 4 further comprising:
(a) a status annunciator producing a signal in response conduction between a pair of annunciator inputs; and (b) a switch responsive to said second value of said amplifier output to short said annunciator inputs and responsive to said first value of said amplifier output to open a conductive path between said annunciator inputs.
(a) a status annunciator producing a signal in response conduction between a pair of annunciator inputs; and (b) a switch responsive to said second value of said amplifier output to short said annunciator inputs and responsive to said first value of said amplifier output to open a conductive path between said annunciator inputs.
6. The indicator of claim 4 further comprising a first status annunciator producing a first operating state signal in response to said first value of said amplifier output and a second status annunciator producing a second operating state signal in response to said second value of said amplifier output.
7. An indicator to signal an operating state of a load, said indicator comprising:
(a) a current transformer including a primary winding comprising a conductor connected to supply current to a load and a secondary winding magnetically coupled to said primary winding so that a flow of current in said primary winding will induce a voltage in said secondary winding;
(b) an amplifier having an output responsive to an amplifier input and a supply voltage, said amplifier input responsive to said voltage in said secondary winding of said current transformer and said supply voltage responsive to a voltage of said primary winding;
(c) a first annunciator signaling a first operating state of said load in response to connection of said first annunciator to said supply voltage;
(d) a second annunciator signaling a second operating state of said load in response to disconnection of said first annunciator from said supply voltage; and (e) an annunciator switch responsive said amplifier output to connect first annuneiator to said supply voltage.
(a) a current transformer including a primary winding comprising a conductor connected to supply current to a load and a secondary winding magnetically coupled to said primary winding so that a flow of current in said primary winding will induce a voltage in said secondary winding;
(b) an amplifier having an output responsive to an amplifier input and a supply voltage, said amplifier input responsive to said voltage in said secondary winding of said current transformer and said supply voltage responsive to a voltage of said primary winding;
(c) a first annunciator signaling a first operating state of said load in response to connection of said first annunciator to said supply voltage;
(d) a second annunciator signaling a second operating state of said load in response to disconnection of said first annunciator from said supply voltage; and (e) an annunciator switch responsive said amplifier output to connect first annuneiator to said supply voltage.
8. The indicator of claim 7 further comprising a third annunciator responsive to current flow to said second annunciator to signal said second operating state of said load.
9. A method of signaling an operating state of a load, said method comprising the steps of:
(a) generating an amplifier input voltage representative of an amount of current flowing to said load;
(b) generating an amplifier output voltage representative of said amplifier input voltage if a load voltage is applied to said load; and (c) signaling a malfunctioning operating state of said load if said amplifier output is less than a threshold output.
(a) generating an amplifier input voltage representative of an amount of current flowing to said load;
(b) generating an amplifier output voltage representative of said amplifier input voltage if a load voltage is applied to said load; and (c) signaling a malfunctioning operating state of said load if said amplifier output is less than a threshold output.
10. The method of signaling an operating state of a load of claim 9 further comprising the step of signaling a proper operating state of said load if said amplifier output voltage exceeds said threshold voltage.
11. The method of signaling an operating state of a load of claim 10 further comprising the step of signaling state of inoperativeness of said load if said amplifier output does not exceed said threshold output and if a load voltage is not applied to said load.
12. The method of signaling an operating state of a load of claim 9 wherein the step of generating an amplifier input voltage representative of an amount of current flowing to said load comprises the steps of:
(a) connecting a secondary winding of a current transformer to an amplifier input; and (b) magnetically coupling a conductor of current to said load to said secondary winding of said current transformer.
(a) connecting a secondary winding of a current transformer to an amplifier input; and (b) magnetically coupling a conductor of current to said load to said secondary winding of said current transformer.
13. The method of signaling an operating state of a load of claim 9 wherein the step of generating an amplifier output representative of said amplifier input voltage if a load voltage is applied to said load comprises the steps of:
(a) applying said amplifier input voltage to an amplifier input of an amplifier, said amplifier producing an output voltage when a voltage is applied to said amplifier input and a voltage is applied to a supply voltage input; and (b) applying a voltage responsive to said load voltage to said supply voltage input of said amplifier.
(a) applying said amplifier input voltage to an amplifier input of an amplifier, said amplifier producing an output voltage when a voltage is applied to said amplifier input and a voltage is applied to a supply voltage input; and (b) applying a voltage responsive to said load voltage to said supply voltage input of said amplifier.
14. The method of signaling an operating state of a load of claim 9 wherein the step of signaling a malfunctioning operating state of said load if said amplifier output is less than a threshold output comprises the step of disconnecting one of a first annunciator and a second annunciator from a voltage source if said amplifier output is less than said threshold output.
15. The method of signaling an operating state of a load of claim 10 wherein the step of signaling a proper operating state of said load if said amplifier output exceeds a threshold output comprises the step of connecting an annunciator to a voltage source responsive to said load voltage.
16. The method of signaling an operating state of a load of claim 11 wherein the step of signaling a state of inoperativeness of said load comprises the step of connecting at least one annunciator to a voltage source responsive to said load voltage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US61196704P | 2004-09-21 | 2004-09-21 | |
| US60/611,967 | 2004-09-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2484960A1 true CA2484960A1 (en) | 2006-03-21 |
| CA2484960C CA2484960C (en) | 2012-01-24 |
Family
ID=36096928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2484960A Active CA2484960C (en) | 2004-09-21 | 2004-10-15 | Status indicator |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US7310049B2 (en) |
| CA (1) | CA2484960C (en) |
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| US7551097B2 (en) * | 2005-10-11 | 2009-06-23 | Barload Machine Co., Ltd. | Indicator device for machine |
| DE102007061702A1 (en) * | 2006-12-22 | 2008-08-07 | Delta Electronics, Inc. | Hot-swappable fan |
| CN104282086A (en) * | 2007-01-09 | 2015-01-14 | 功率监视器公司 | Method and apparatus for smart circuit breaker |
| US8125345B2 (en) * | 2007-03-01 | 2012-02-28 | Power Monitors | Method and apparatus for loose wiring monitor |
| US20090027190A1 (en) * | 2007-07-25 | 2009-01-29 | Power Monitors, Inc. | Method and apparatus for a low-power radio broadcast alert for monitoring systems |
| CA2609629A1 (en) | 2007-09-10 | 2009-03-10 | Veris Industries, Llc | Current switch with automatic calibration |
| CA2609611A1 (en) | 2007-09-10 | 2009-03-10 | Veris Industries, Llc | Split core status indicator |
| CA2609619A1 (en) | 2007-09-10 | 2009-03-10 | Veris Industries, Llc | Status indicator |
| US9202383B2 (en) * | 2008-03-04 | 2015-12-01 | Power Monitors, Inc. | Method and apparatus for a voice-prompted electrical hookup |
| US8212548B2 (en) | 2008-06-02 | 2012-07-03 | Veris Industries, Llc | Branch meter with configurable sensor strip arrangement |
| US8421443B2 (en) | 2008-11-21 | 2013-04-16 | Veris Industries, Llc | Branch current monitor with calibration |
| US8421639B2 (en) | 2008-11-21 | 2013-04-16 | Veris Industries, Llc | Branch current monitor with an alarm |
| US9335352B2 (en) | 2009-03-13 | 2016-05-10 | Veris Industries, Llc | Branch circuit monitor power measurement |
| US20100237875A1 (en) * | 2009-03-18 | 2010-09-23 | Dominador Limcolioc | Unified brake and light tester |
| US8773108B2 (en) * | 2009-11-10 | 2014-07-08 | Power Monitors, Inc. | System, method, and apparatus for a safe powerline communications instrumentation front-end |
| US9397484B2 (en) * | 2009-12-09 | 2016-07-19 | Veris Industries, Llc | Method for mounting current sensors |
| EP2413105B1 (en) | 2010-07-29 | 2017-07-05 | Power Monitors, Inc. | Method and apparatus for a demand management monitoring system |
| US10060957B2 (en) | 2010-07-29 | 2018-08-28 | Power Monitors, Inc. | Method and apparatus for a cloud-based power quality monitor |
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| US9146264B2 (en) | 2011-02-25 | 2015-09-29 | Veris Industries, Llc | Current meter with on board memory |
| US9329996B2 (en) | 2011-04-27 | 2016-05-03 | Veris Industries, Llc | Branch circuit monitor with paging register |
| US9250308B2 (en) | 2011-06-03 | 2016-02-02 | Veris Industries, Llc | Simplified energy meter configuration |
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| US9766273B2 (en) * | 2012-08-21 | 2017-09-19 | Neilsen-Kuljian, Inc. | Self-powered current sensor with a linear adjustment |
| US10371730B2 (en) | 2015-12-28 | 2019-08-06 | Veris Industries, Llc | Branch current monitor with client level access |
| US10371721B2 (en) | 2015-12-28 | 2019-08-06 | Veris Industries, Llc | Configuration system for a power meter |
| US10408911B2 (en) | 2015-12-28 | 2019-09-10 | Veris Industries, Llc | Network configurable system for a power meter |
| US10274572B2 (en) | 2015-12-28 | 2019-04-30 | Veris Industries, Llc | Calibration system for a power meter |
| US11215650B2 (en) | 2017-02-28 | 2022-01-04 | Veris Industries, Llc | Phase aligned branch energy meter |
| US11193958B2 (en) | 2017-03-03 | 2021-12-07 | Veris Industries, Llc | Non-contact voltage sensor |
| US10705126B2 (en) | 2017-05-19 | 2020-07-07 | Veris Industries, Llc | Energy metering with temperature monitoring |
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| CN111537907A (en) * | 2020-05-15 | 2020-08-14 | 北京小米移动软件有限公司 | Power on-off detection circuit, method and device and storage medium |
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-
2004
- 2004-10-15 CA CA2484960A patent/CA2484960C/en active Active
-
2005
- 2005-06-03 US US11/145,000 patent/US7310049B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US7310049B2 (en) | 2007-12-18 |
| CA2484960C (en) | 2012-01-24 |
| US20060061480A1 (en) | 2006-03-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |