CN107196270B - A kind of electricity floor heating, the GFCI control system of hot-water heating controller - Google Patents
A kind of electricity floor heating, the GFCI control system of hot-water heating controller Download PDFInfo
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- CN107196270B CN107196270B CN201710558932.1A CN201710558932A CN107196270B CN 107196270 B CN107196270 B CN 107196270B CN 201710558932 A CN201710558932 A CN 201710558932A CN 107196270 B CN107196270 B CN 107196270B
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- Prior art keywords
- gfci
- detection circuit
- load
- leakage
- circuit
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
Abstract
The invention discloses a kind of electricity floor heatings, the GFCI control system of hot-water heating controller, including power end, mutual inductor, load switch, load, GFCI detection circuit, GFCI self-checking circuit, MCU, TEST switch and fictitious load, power end passes through mutual inductor, load switch is connected with load, power end also passes through mutual inductor, TEST switch is connected with fictitious load, GFCI detection circuit is connected with mutual inductor, GFCI detection circuit is connected with the GFCI self-checking circuit, the signal end of GFCI detection circuit and GFCI self-checking circuit is connected with the signal end of MCU respectively, the signal end of MCU is connected with load switch, GFCI detection circuit is connected with load switch.The present invention is able to detect whether user equipment leaks electricity, once electric leakage, then automatic cutting equipment power supply, can real-time detection circuit it is whether normal, and there is TEST key, can at any time artificial detection leakage protection circuit it is whether normal.
Description
Technical field
The present invention relates to electronic information technical field, especially a kind of electricity floor heating, the GFCI control system of hot-water heating controller.
Background technique
GFCI is the abbreviation of English Ground Fault Circuit Interrupter, and Chinese claims earth-fault current leakage
Non-electricity protector.Operating voltage 264VAC-102VAC, operating temperature -35Deg arrive 66Deg, and turn-off time <, 25mS was (in 500 Europe
When TRIP CURRENT), turn-off current: 4-6mA；The control equipment for exporting to North America market will add this kind of protector, big portion
Sub-control control equipment is furnished with leakage protecting plug, and portioned product then carries GFCI function.The product of North America is exported to, if to be UL
Or ETL certification, GFCI function can all be done and strictly examine and test.
The electricity floor heating or Water heating temperature control of the overwhelming majority export to North America market all without design GFCI defencive function
Then receive certain limitation.Small part temperature controller is also configured with GFCI control system, but is to utilize a dedicated collection of GFCI
The generation of leakage current is determined whether at chip, once this integrated chip itself is faulty, then GFCI function performs practically no function.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of GFCI of electricity floor heating, hot-water heating controller controls
System processed, the application can automatically detect whether user equipment leaks electricity, once electric leakage, then automatic cutting equipment power supply, energy are real-time
Whether detection circuit normal, and have TEST key, can at any time artificial detection leakage protection circuit it is whether normal.
The purpose of the present invention is achieved through the following technical solutions:
A kind of electricity floor heating, the GFCI control system of hot-water heating controller, including power end, mutual inductor, load switch and load,
The power end passes sequentially through mutual inductor, load switch is connected with the load, and the load is also grounded by leakage current line；
It further includes manual TEST electric-leakage detection circuit, GFCI detection circuit, GFCI self-checking circuit and MCU；
Whether the manual TEST electric-leakage detection circuit is normal for manual test GFCI detection circuit；
The GFCI detection circuit, if detection has electric leakage, automatically cuts off load for detecting whether load leaks electricity automatically
Switch；
Whether the GFCI self-checking circuit is normal for monitoring GFCI detection circuit, if detecting, GFCI detection circuit is different
Often, then alarm signal is sent to MCU, and disconnects load switch；
The test side of the GFCI detection circuit is connected with mutual inductor, and the control terminal of the GFCI detection circuit is born with described
Load switch is connected；The test side of the GFCI self-checking circuit is connected with GFCI detection circuit, the GFCI detection circuit, described
GFCI self-checking circuit is connected with MCU respectively, and the MCU is also connected with the load switch, the manual TEST detection of electrical leakage electricity
Road is connected by mutual inductor with power end.
In the present invention, the manual TEST electric-leakage detection circuit includes TEST switch and fictitious load, the power end
Pass sequentially through the mutual inductor, TEST switch is connected with fictitious load.
In the present invention, the leakage current of the leakage current line is 4mA.
In the present invention, it is additionally provided with warning device, the warning device is connected by signal wire with the MCU.
The beneficial effects of the present invention are:
(1) it can automatically detect whether user load leaks electricity, once electric leakage, then automatically cut off load switch, disconnect load
Power supply；
(2) when system has 4mA or less leakage current, GFCI detection circuit is not responded, when there are 6mA electric current,
It is then immediately performed and disconnects load power source operation, meet UL943 examination criteria；
(3) GFCI detection circuit discovery has electric leakage, understands oneself cut-off equipment power supply, while reported data is obtained to MCU, MCU
When getting system equipment failure, can reliability service in case of a fault, and alert and in time and be uploaded to monitoring center；
(4) it is equipped with GFCI self-checking circuit, whether normal can constantly monitor GFCI detection circuit；
(5) have TEST switch, can at any time artificial detection GFCI detection circuit it is whether normal.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
In figure, 10- power end, 11- mutual inductor, 12- load switch, 13- load, 14-TEST switch, 15- fictitious load,
16-MCU, 17-GFCI detection circuit, 18-GFCI self-checking circuit.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that in the absence of conflict, following embodiment and implementation
Feature in example can be combined with each other.
It should be noted that illustrating the basic structure that only the invention is illustrated in a schematic way provided in following embodiment
Think, only shown in schema then with related component in the present invention rather than component count, shape and size when according to actual implementation
Draw, when actual implementation kenel, quantity and the ratio of each component can arbitrarily change for one kind, and its assembly layout kenel
It is likely more complexity.
Embodiment:
A kind of electricity floor heating, the GFCI control system of hot-water heating controller, including power end 10, mutual inductor 11, load switch 12
With load 13, the power end 10 passes sequentially through mutual inductor 11, load switch 12 is connected with the load 13, and the load 13 is also
It is grounded by leakage current line；It further includes manual TEST electric-leakage detection circuit, GFCI detection circuit 17, GFCI self-checking circuit 18
And MCU16；
Whether the manual TEST electric-leakage detection circuit is normal for manual test GFCI detection circuit；
The GFCI detection circuit 17, if detection has electric leakage, is automatically cut off for detecting whether load 13 leaks electricity automatically
Load switch 12；
Whether the GFCI self-checking circuit 18 is normal for monitoring GFCI detection circuit 17, if detecting GFCI detection circuit
17 is abnormal, then sends alarm signal to MCU16, and disconnect load switch 12；
The test side of the GFCI detection circuit 17 is connected with mutual inductor 11, the control terminal of the GFCI detection circuit 17 with
The load switch 12 is connected；The test side of the GFCI self-checking circuit 18 is connected with GFCI detection circuit 17, the GFCI inspection
Slowdown monitoring circuit 17, the GFCI self-checking circuit 18 are connected with MCU16 respectively, and the MCU16 is also connected with the load switch 12, institute
Manual TEST electric-leakage detection circuit is stated to be connected by mutual inductor 11 with power end 10.
In the present invention, the manual TEST electric-leakage detection circuit includes TEST switch 14 and fictitious load 15, the electricity
Source 10 passes sequentially through the mutual inductor 11, the TEST switch 14 is connected with fictitious load 15.
In the present invention, the leakage current of the leakage current line is 4mA.
In the present invention, it is additionally provided with warning device, the warning device is connected by signal wire with the MCU16.
The principle of GFCI detection circuit is as follows: power end 10 includes L line and N line, L line and N line also cross mutual inductor 11,
If not leaking electricity generation, the electric current for flowing into L line is equal with the outflow size of current of N line, and contrary, mutual inductor 11 incudes
Current differential be then zero.If there is electric leakage occurs, then mutual inductor 11 can then induce the current differential of L line Yu N line, that is, leak electricity
Electric current.Two signals are judged and generated through GFCI detection circuit 17: a signal directly controls load switch 12, cutting load electricity
Source；Another signal is supplied to MCU16, and MCU16 disconnects load power source and warning note according to signal.
Further, fictitious load 15 and TEST switch 14 form manual TEST electric-leakage detection circuit, which is then to use
It is whether normal in manual test GFCI detection circuit, by designing a fictitious load on L line, press TEST switch 14, people
For constitute electric leakage, observation GFCI detection function whether normal response.
The present invention can constantly detect whether user equipment leaks electricity automatically, once electric leakage, then automatic cutting equipment power supply, has
Leakage protection circuit real-time monitoring has TEST switch, can at any time artificial detection leakage protection circuit it is whether normal.
A specific embodiment of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.
Claims (3)
1. a kind of electricity floor heating, the GFCI control system of hot-water heating controller, which is characterized in that opened including power end, mutual inductor, load
It closes and loads, the power end passes sequentially through mutual inductor, load switch is connected with the load, and the load is also electric by electric leakage
Streamline ground connection；It further includes manual TEST electric-leakage detection circuit, GFCI detection circuit, GFCI self-checking circuit and MCU；
Whether the manual TEST electric-leakage detection circuit is normal for manual test GFCI detection circuit；
The GFCI detection circuit, if detection has electric leakage, automatically cuts off load switch for detecting whether load leaks electricity automatically；
Whether the GFCI self-checking circuit is normal for monitoring GFCI detection circuit, if detecting, GFCI detection circuit is abnormal,
Alarm signal is sent to MCU, and disconnects load switch；
The test side of the GFCI detection circuit is connected with mutual inductor, and the control terminal of the GFCI detection circuit is opened with the load
It closes and is connected；The test side of the GFCI self-checking circuit is connected with GFCI detection circuit, and the GFCI detection circuit, the GFCI are certainly
Inspection circuit is connected with MCU respectively, and the MCU is also connected with the load switch, and the manual TEST electric-leakage detection circuit passes through
Mutual inductor is connected with power end；
The manual TEST electric-leakage detection circuit includes that TEST switch and fictitious load, the power end pass sequentially through the mutual inductance
Device, TEST switch are connected with fictitious load.
2. a kind of electricity floor heating, the GFCI control system of hot-water heating controller according to claim 1, which is characterized in that the leakage
The leakage current of electric current line is 4mA.
3. a kind of electricity floor heating, the GFCI control system of hot-water heating controller according to claim 1, which is characterized in that it also sets
There is warning device, the warning device is connected by signal wire with the MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710558932.1A CN107196270B (en) | 2017-06-30 | 2017-06-30 | A kind of electricity floor heating, the GFCI control system of hot-water heating controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710558932.1A CN107196270B (en) | 2017-06-30 | 2017-06-30 | A kind of electricity floor heating, the GFCI control system of hot-water heating controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107196270A CN107196270A (en) | 2017-09-22 |
| CN107196270B true CN107196270B (en) | 2019-01-15 |
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ID=59883612
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710558932.1A Active CN107196270B (en) | 2017-06-30 | 2017-06-30 | A kind of electricity floor heating, the GFCI control system of hot-water heating controller |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1964148A (en) * | 2006-11-21 | 2007-05-16 | 陈景正 | An intelligent detection and protection circuit for termination of service life of ground fault breaker |
| CN201975753U (en) * | 2011-03-01 | 2011-09-14 | 卫星电子（中山）有限公司 | Automatic electric leakage detecting circuit for water heater |
| CN104422830A (en) * | 2013-08-27 | 2015-03-18 | 施耐德电器工业公司 | Leakage protector and leakage protection function detection method |
| CN105406441A (en) * | 2015-12-15 | 2016-03-16 | 陈泽 | Power ground fault protection circuit |
| CN205429696U (en) * | 2016-02-02 | 2016-08-03 | 益而益(集团)有限公司 | With electric detection means and electric jointing equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10135235B2 (en) * | 2015-11-24 | 2018-11-20 | Abb Schweiz Ag | Digital ground-fault circuit interrupter |
-
2017
- 2017-06-30 CN CN201710558932.1A patent/CN107196270B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1964148A (en) * | 2006-11-21 | 2007-05-16 | 陈景正 | An intelligent detection and protection circuit for termination of service life of ground fault breaker |
| CN201975753U (en) * | 2011-03-01 | 2011-09-14 | 卫星电子（中山）有限公司 | Automatic electric leakage detecting circuit for water heater |
| CN104422830A (en) * | 2013-08-27 | 2015-03-18 | 施耐德电器工业公司 | Leakage protector and leakage protection function detection method |
| CN105406441A (en) * | 2015-12-15 | 2016-03-16 | 陈泽 | Power ground fault protection circuit |
| CN205429696U (en) * | 2016-02-02 | 2016-08-03 | 益而益(集团)有限公司 | With electric detection means and electric jointing equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107196270A (en) | 2017-09-22 |
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Address after: 241000 No. 86, guandoumen Road, Jiujiang Economic Development Zone, Wuhu District, China (Anhui) pilot Free Trade Zone, Wuhu City, Anhui Province Patentee after: WUHU JIAHONG NEW MATERIAL Co.,Ltd. Address before: 241000 Wanli Industrial Park, Jiujiang Economic Development Zone, Wuhu City, Anhui Province Patentee before: WUHU JIAHONG NEW MATERIAL Co.,Ltd. |