CN105958433B - A kind of detection of relay zero-crossing, calibration method and device - Google Patents
A kind of detection of relay zero-crossing, calibration method and device Download PDFInfo
- Publication number
- CN105958433B CN105958433B CN201610509497.9A CN201610509497A CN105958433B CN 105958433 B CN105958433 B CN 105958433B CN 201610509497 A CN201610509497 A CN 201610509497A CN 105958433 B CN105958433 B CN 105958433B
- Authority
- CN
- China
- Prior art keywords
- zero
- relay
- time interval
- phase
- voltage
- 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.)
- Active
Links
Classifications
-
- 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
- H02H3/08—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 excess current
Landscapes
- Radio Relay Systems (AREA)
Abstract
The invention discloses a kind of detection of relay zero-crossing, calibration method and devices.Wherein, relay zero-crossing detection method, comprising: in relay conducting, the voltage-phase of control relay controlled terminal；Obtain the time interval of the adjacent zero passage twice of voltage-phase；The zero passage that time interval is sent to relay is calibrated into side.The present invention detects relay by the way that individual zero crossing detection device is arranged, and product circuit itself is not required, while without screening again to relay, can effectively save the research and development time of product, reduce the production cost of product.
Description
Technical field
The present invention relates to relay control technology field more particularly to a kind of detections of relay zero-crossing, calibration method and dress
It sets.
Background technique
With the development of smart home industry, home intelligence product is more and more diversified.Light, window are controlled by mobile phone
Curtain is already present in ordinary people.The mechanical switch of common control light can no longer meet requirement, therefore intelligence occurs
It can switch.Intelligent switching control load controls its on-off as switch generally by relay, and common is resistive or perceptual
Load such as light bulb, energy-saving lamp, all there is no problem for curtain motor.But after LED energy-saving lamp occurs now, since it is negative for capacitive
It carries, when loading opening, surge current is very big to relay contact impact, and switch several times, will damage relay contact, make
It, can not normal switch lamp or curtain at relay adhesion.
Most of relay is all by increasing zero cross detection circuit at present.By detecting zero crossing, in zero crossing
Turn-on relay avoids relay contact from receiving big rush of current damage.But existing zero passage detection method have it is certain
Limitation: first is that product circuit itself has error, cause detection inaccurate；Second is that the actuation time of relay conducting is different
Sample can not accurately determine the time of passing zero trigger.Therefore, if zero cross detection circuit will reduce the error of zero passage detection, first is that
Need to improve product circuit precision, second is that accurately being screened to relay.But both mode practical operations get up and are all
It is relatively difficult, it is very time-consuming and the production cost of product is caused to greatly increase.It therefore, can not be effective using zero cross detection circuit
Conducting is solved for the current impact of relay.
Summary of the invention
Technical problem to be solved by the present invention lies in a kind of detection of relay zero-crossing, calibration method and device is provided, use
It is damaged when solving the problem of relay conducting in the prior art vulnerable to inrush current shock.
For achieving the above object, the present invention uses following technical solutions.
According to one aspect of the present invention, a kind of relay zero-crossing detection method is provided, for wrapping in zero passage detection side
It includes:
In relay conducting, the voltage-phase of the relay controlled terminal is detected；
Obtain the time interval of the adjacent zero passage twice of voltage-phase；
The zero passage that the time interval is sent to the relay is calibrated into side.
Further, using zigbee wireless communication protocol, the time interval is sent to relay zero-crossing calibration side.
According to one aspect of the present invention, a kind of relay zero-crossing calibration method is provided, calibrates side for zero passage, comprising:
The time interval of the adjacent zero passage twice of controlled terminal voltage-phase when receiving the relay conducting that zero passage detection side is sent；
The time interval is compared with preset threshold, according to comparing result to the zero-crossing timing of the relay into
Row calibration.
Further, using zigbee wireless communication protocol, the adjacent zero passage twice of the controlled terminal voltage-phase is received
Time interval.
It is further, described to be calibrated according to zero-crossing timing of the comparing result to the relay, comprising:
Calculate the difference of the time interval Yu the preset threshold；
When the time interval is greater than the preset threshold, detecting that the relay first time voltage-phase is zero
Time point after, the time point that second of voltage-phase of the relay is zero is shifted to an earlier date into the difference；
When the time interval is less than the preset threshold, detecting that the relay first time voltage-phase is zero
Time point after, the time point that second of voltage-phase of the relay is zero is postponed into the difference.
Further, described when being calibrated according to zero-crossing timing of the comparing result to the relay, further includes: to work as institute
When stating time interval equal to the preset threshold, the time interval is stored.
According to one aspect of the present invention, a kind of relay zero-crossing detection device is provided, comprising:
Detection unit, for detecting the voltage-phase of the relay controlled terminal in relay conducting；
Acquiring unit, for obtaining the time interval of the adjacent zero passage twice of voltage-phase；
Transmission unit, the zero passage for the time interval to be sent to the relay calibrate side.
Further, the time interval is sent to relay using zigbee wireless communication protocol by the transmission unit
Zero passage calibrates side.
According to one aspect of the present invention, a kind of relay zero-crossing calibrating installation is provided, comprising:
Receiving unit, when for receiving the relay conducting of zero passage detection side transmission, controlled terminal voltage-phase is adjacent twice
The time interval of zero passage；
Comparison unit, for comparing the time interval with preset threshold；
Calibration unit, for being calibrated according to zero-crossing timing of the comparing result to the relay.
Further, the receiving unit is adjacent using the zigbee wireless communication protocol reception controlled terminal voltage-phase
The time interval of zero passage twice.
Further, the calibration unit is specifically used for:
Calculate the difference of the time interval Yu the preset threshold；
When the time interval is greater than the preset threshold, detecting that the relay first time voltage-phase is zero
Time point after, the time point that second of voltage-phase of the relay is zero is shifted to an earlier date into the difference；
When the time interval is less than the preset threshold, detecting that the relay first time voltage-phase is zero
Time point after, the time point that second of voltage-phase of the relay is zero is postponed into the difference.
Further, described device further includes storage unit, is used for when the time interval is equal to the preset threshold,
The time interval is stored.
The invention has the following advantages:
The detection of relay zero-crossing provided by the embodiment of the present invention, calibration method and device need to only increase a zero passage inspection
Device is surveyed, zero-crossing timing when being often supported on the actuating of relay all the way is detected by zero crossing detection device；And will test two
The time interval that a adjacent voltage-phase twice is zero is sent in smart electronics product by zigbee wireless communication protocol；By
Whether smart electronics product according to zero-crossing timing interval judges zero-crossing timing accurate, and adjusts until accurate zero crossing.It is logical
It crosses the present invention both not having to improve circuit precision and screen relay, so that it may effectively avoid the surge electricity of relay contact
Stream, so that relay be made to be protected, increases its service life；By configuring independent detection circuit, production can be effectively reduced
The production cost of product.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only
Some embodiments of the present invention, for those of ordinary skill in the art, without any creative labor, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the flow chart of relay zero passage detection method in the embodiment of the present invention；
Fig. 2 is the flow chart of relay zero-crossing calibration method in the embodiment of the present invention；
Fig. 3 is the structural block diagram of relay zero crossing detection device in the embodiment of the present invention；
Fig. 4 is the electrical block diagram of relay zero crossing detection device in the embodiment of the present invention；
Fig. 5 is the electrical block diagram of relay in product in the embodiment of the present invention；
Fig. 6 is the structural block diagram of relay zero-crossing calibrating installation in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
The embodiment of the invention provides a kind of relay zero-crossing detection methods, are used for zero passage detection side, referring to Fig. 1, specifically
Include the following steps:
Step 101, when relay is connected, the voltage-phase of relay controlled terminal is detected；
In this step, the voltage at zero passage detection side detection relay controlled terminal (i.e. output end) both ends, can effectively keep away
Exempt from error caused by the delay because of relay itself.Therefore, by detect relay controlled terminal voltage-phase, without consider after
The delay situation of electric appliance itself need to only obtain the voltage of relay output end.
Step 102, the time interval of the adjacent zero passage twice of voltage-phase is obtained.
In this step, it when obtaining zero-crossing timing interval, (is beaten when receiving relay on-off control instruction first
When switch), the zero crossing time t0 when voltage-phase for detecting relay is zero；Then when the conducting of detection relay, voltage phase
The zero-crossing timing t1 that position is zero.Calculate zero crossing time interval T=t1-t0.
Step 103, the zero passage that time interval is sent to relay is calibrated into side.
In this step, zero passage detection side is independent device.Zero passage detection side obtains the adjacent zero passage twice of voltage-phase
Time interval after, by the time interval be sent to relay zero passage calibrate side, for subsequent relay be connected when zero passage
Time point then stops being detected.
Usual zero passage calibration side is located in smart electronics product.Wireless controlled usually may be implemented in smart electronics product at present
System, therefore zero passage detection side equally uses wireless mode, and time interval is sent to zero passage calibration side.Specifically, it can use
Bluetooth, wifi, zigbee etc..Zigbee wireless communication protocol is preferably used in the embodiment of the present invention.Zigbee protocol propagate away from
It is simple from close, low-power consumption, low cost, agreement, the cost of zero passage detection side can be effectively reduced, while guaranteeing the reliable biography of data
It is defeated.
Relay zero-crossing detection method provided by the embodiment of the present invention, by the voltage phase for detecting relay controlled terminal
Position, the actuation time be connected without considering further that relay itself, according to the time interval of zero passage twice, zero passage calibrates side can be real
Existing zero passage calibration.Therefore, the embodiment of the present invention detects relay by the way that individual zero crossing detection device is arranged, for producing
Product circuit itself does not require, while without screening again to relay, can effectively save the research and development time of product, reduce
The production cost of product.
Embodiment 2
The embodiment of the invention also provides a kind of relay zero-crossing calibration methods, calibrate side for zero passage, referring to fig. 2, tool
Body includes the following steps:
Step 201, controlled terminal voltage-phase adjacent zero passage twice when receiving the relay conducting that zero passage detection side is sent
Time interval.
In this step, zero passage calibration side can use the wireless communication protocols such as bluetooth, wifi, zigbee.It is preferred that using
Zigbee wireless communication protocol convenient for reducing product cost, while guaranteeing reliable data transmission.Pass through zigbee communication protocol
The long-range control of product can be realized by smart machine so that product is not limited by firewire, zero curve, number for smart electronics product
System, is easy to implement home intelligence.
Step 202, time interval and preset threshold are compared, when according to comparing result to the zero passage of the relay
Between calibrated.
In the embodiment of the present invention, the 50HZ AC wave shape of standard is generallyd use, the all-wave period is 20ms, and half wave cycles are
10ms.Time interval between namely two zero crossings is 10ms.Therefore, preset threshold uses in the embodiment of the present invention
Zero-crossing timing interval is compared by 10ms with 10ms.According to the difference compared, the zero-crossing timing of relay is calibrated.
When being calibrated according to zero-crossing timing of the comparing result to relay, specifically comprise the following steps:
Calculate the difference at zero-crossing timing interval and preset time threshold；
When time interval is greater than preset threshold, after detecting the time point that relay first time voltage-phase is zero,
The time point that second of voltage-phase of relay is zero is shifted to an earlier date into corresponding difference；
When time interval is less than preset threshold, after detecting the time point that relay first time voltage-phase is zero,
The time point that second of voltage-phase of relay is zero is postponed into corresponding difference；
When time interval is equal to preset threshold, which is stored into electronic product, as leading for relay
The time interval of zero crossing when logical, while prompting to calibrate successfully.
Zero passage detection calibration method provided by the embodiment of the present invention is detected by zero crossing detection device and is often loaded all the way
Zero-crossing timing in the actuating of relay；And the time interval that the two adjacent voltage-phases twice that will test are zero passes through
Zigbee wireless communication protocol will be sent in smart electronics product；Judged by smart electronics product according to zero-crossing timing interval
Whether the zero-time is accurate, and adjusts until accurate zero crossing.Both do not have to improve circuit precision and to relay through the invention
Device is screened, so that it may effectively the surge current of relay contact is avoided, so that relay be made to be protected.In addition, this hair
It is bright to be not necessarily to change design to hardware circuit, reduce hardware cost.
Embodiment 3
Referring to Fig. 3, the embodiment of the invention also provides a kind of relay zero-crossing detection devices, comprising:
Detection unit, for detecting the voltage-phase of relay controlled terminal in relay conducting；
Acquiring unit, for obtaining the time interval of the adjacent zero passage twice of voltage-phase；
Transmission unit, the zero passage for time interval to be sent to relay calibrate side.
Further, time interval is sent to relay zero-crossing calibration using zigbee wireless communication protocol by transmission unit
Side.Zigbee wireless communication protocol is preferably used in the embodiment of the present invention.Zigbee protocol propagation distance is close, low-power consumption, it is low at
Originally, agreement is simple, the cost of zero passage detection side can be effectively reduced, while guaranteeing the reliable transmission of data.
Further, the circuit diagram of relay zero-crossing detection device, as shown in Figure 4, it can be achieved that relay in Fig. 5 in product
Device K1 and K2 carry out zero passage detection.The zero-crossing examination of two relays can be achieved in Fig. 4, the zero passage detection with relay K1 is
Example is illustrated.Wherein, photoelectrical coupler IC6 connects with resistance R110, resistance R117, resistance R118, is used for 220V forceful electric power
It is isolated with weak electric signal；Resistance R110, resistance R117, resistance R118 are the circuit 220V current-limiting resistance；Resistance R119 leads for optocoupler
Logical current-limiting resistance is grounded by photoelectrical coupler IC6；The tie point of resistance R119 and photoelectrical coupler IC6 passes through resistance
The base stage of R141 connecting triode N115；The base stage of N115 is by resistance R143 connection；Resistance R143 is point of optocoupler conducting
Piezoresistance, both ends shunt capacitance C126；Capacitor C126 is filter capacitor, filters out power supply disturbance burr；Triode N115 is waveform
Shaping, emitter grounding, collector improve anti-interference by resistance R142 connection+5V power supply；Resistance R142 and capacitor C21 are
MCU acquires signal filtered power.
Relay zero-crossing detection device provided by the embodiment of the present invention, by detection relay controlled terminal it is adjacent twice
The time interval that voltage-phase is zero, and agreement is sent to zero passage calibration side by wireless communication, is realized by zero passage calibration side
Zero calibration.Relay is detected by the way that individual zero crossing detection device is arranged, without configuring zero passage inspection in electronic product
The production cost of product can be effectively reduced in slowdown monitoring circuit.
Embodiment 4
Referring to Fig. 6, the embodiment of the invention also provides a kind of relay zero-crossing calibrating installations, comprising:
Receiving unit, when for receiving the relay conducting of zero passage detection side transmission, controlled terminal voltage-phase is adjacent twice
The time interval of zero passage；
Comparison unit, for comparing time interval and preset threshold；
Calibration unit, for being calibrated according to zero-crossing timing of the comparing result to relay.
Further, receiving unit receives the adjacent zero passage twice of controlled terminal voltage-phase using zigbee wireless communication protocol
Time interval.
Further, calibration unit is specifically used for:
Calculate the difference of time interval and preset threshold；
When time interval is greater than preset threshold, after detecting the time point that relay first time voltage-phase is zero,
The time point that second of voltage-phase of relay is zero is shifted to an earlier date into difference；
When time interval is less than preset threshold, after detecting the time point that relay first time voltage-phase is zero,
The time point that second of voltage-phase of relay is zero is postponed into difference.
Further, device further includes storage unit, for when time interval be equal to preset threshold when, by time interval into
Row storage.
Zero passage detection calibrating installation provided by the embodiment of the present invention, by the CPU of smart electronics product itself according to zero passage
Time interval judges whether the zero-crossing timing of relay is accurate, and adjusts until accurate zero crossing.Through the invention neither
Circuit precision and relay is screened with improving, so that it may effectively avoid the surge current of relay contact, thus make after
Electric appliance is protected.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.For system embodiment
For, since it is basically similar to the method embodiment, so being described relatively simple, referring to the portion of embodiment of the method in place of correlation
It defends oneself bright.Also, herein, the terms "include", "comprise" or its any other variant are intended to nonexcludability
Include so that include a series of elements process, method, article or equipment not only include those elements, but also
Including other elements that are not explicitly listed, or further include for this process, method, article or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want
There is also other identical elements in the process, method, article or equipment of element.In addition, those of ordinary skill in the art can be with
Understand and realize that all or part of the steps of above-described embodiment may be implemented by hardware, correlation can also be instructed by program
Hardware complete, the program can store in a kind of computer readable storage medium, and storage medium mentioned above can
To be read-only memory, disk or CD etc..
Although describing the application by embodiment, it will be apparent to one skilled in the art that the application is there are many deformation and becomes
Change without departing from the spirit and scope of the present invention.If being wanted in this way, these modifications and changes of the present invention belongs to right of the present invention
Ask and its equivalent technologies within the scope of, then the present invention is also intended to include these modifications and variations.
Claims (12)
1. a kind of relay zero-crossing detection method, in zero passage detection side characterized by comprising
In relay conducting, the voltage-phase of the relay controlled terminal is detected；
The time interval for obtaining the adjacent zero passage twice of voltage-phase, specifically includes:
When receiving relay on-off control instruction, zero crossing time t0 when the voltage-phase for detecting relay is zero, detection
The zero-crossing timing tl that voltage-phase is zero when relay is connected calculates zero crossing time interval T, T=t1-t0；
The zero passage that the time interval is sent to the relay is calibrated into side.
2. the method as described in claim 1, which is characterized in that zigbee wireless communication protocol is used, by the time interval
It is sent to relay zero-crossing calibration side.
3. a kind of relay zero-crossing calibration method calibrates side for zero passage characterized by comprising
Receive the time interval as described in claim 1 that zero passage detection side is sent；
The time interval is compared with preset threshold, school is carried out according to zero-crossing timing of the comparing result to the relay
It is quasi-.
4. method as claimed in claim 3, which is characterized in that use zigbee wireless communication protocol, receive the controlled terminal
The time interval of the adjacent zero passage twice of voltage-phase.
5. method as claimed in claim 3, which is characterized in that it is described according to comparing result to the zero-crossing timing of the relay
It is calibrated, comprising:
Calculate the difference of the time interval Yu the preset threshold；
When the time interval be greater than the preset threshold when, detect the relay first time voltage-phase be zero when
Between put after, the time point that second of voltage-phase of the relay is zero is shifted to an earlier date into the difference；
When the time interval be less than the preset threshold when, detect the relay first time voltage-phase be zero when
Between put after, the time point that second of voltage-phase of the relay is zero is postponed into the difference.
6. method as claimed in claim 3, which is characterized in that it is described according to comparing result to the zero-crossing timing of the relay
When being calibrated, further includes: when the time interval is equal to the preset threshold, the time interval is stored.
7. a kind of relay zero-crossing detection device characterized by comprising
Detection unit, for detecting the voltage-phase of the relay controlled terminal in relay conducting；
Acquiring unit is specifically used for for obtaining the time interval of the adjacent zero passage twice of voltage-phase:
When receiving relay on-off control instruction, zero crossing time t0 when the voltage-phase for detecting relay is zero, detection
The zero-crossing timing tl that voltage-phase is zero when relay is connected calculates zero crossing time interval T, T=t1-t0；
Transmission unit, the zero passage for the time interval to be sent to the relay calibrate side.
8. device as claimed in claim 7, which is characterized in that the transmission unit uses zigbee wireless communication protocol by institute
It states time interval and is sent to relay zero-crossing calibration side.
9. a kind of relay zero-crossing calibrating installation characterized by comprising
Receiving unit, for receiving the time interval as claimed in claim 7 of zero passage detection side transmission；
Comparison unit, for comparing the time interval with preset threshold；
Calibration unit, for being calibrated according to zero-crossing timing of the comparing result to the relay.
10. device as claimed in claim 9, which is characterized in that the receiving unit is connect using zigbee wireless communication protocol
Receive the time interval of the adjacent zero passage twice of the controlled terminal voltage-phase.
11. device as claimed in claim 9, which is characterized in that the calibration unit is specifically used for:
Calculate the difference of the time interval Yu the preset threshold；
When the time interval be greater than the preset threshold when, detect the relay first time voltage-phase be zero when
Between put after, the time point that second of voltage-phase of the relay is zero is shifted to an earlier date into the difference；
When the time interval be less than the preset threshold when, detect the relay first time voltage-phase be zero when
Between put after, the time point that second of voltage-phase of the relay is zero is postponed into the difference.
12. device as claimed in claim 9, which is characterized in that described device further includes storage unit, for working as the time
When interval is equal to the preset threshold, the time interval is stored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610509497.9A CN105958433B (en) | 2016-06-30 | 2016-06-30 | A kind of detection of relay zero-crossing, calibration method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610509497.9A CN105958433B (en) | 2016-06-30 | 2016-06-30 | A kind of detection of relay zero-crossing, calibration method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105958433A CN105958433A (en) | 2016-09-21 |
| CN105958433B true CN105958433B (en) | 2019-08-09 |
Family
ID=56903037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610509497.9A Active CN105958433B (en) | 2016-06-30 | 2016-06-30 | A kind of detection of relay zero-crossing, calibration method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105958433B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109445336B (en) * | 2018-10-30 | 2022-05-17 | 温州市麦特力克电器有限公司 | Switch control circuit and switch control system |
| CN109994341B (en) * | 2019-03-29 | 2020-08-14 | 公牛集团股份有限公司 | Relay zero switch self-calibration method and system |
| CN110535162B (en) * | 2019-09-23 | 2021-09-03 | 阳光电源（上海）有限公司 | Local load starting control method of energy storage inverter and energy storage inverter |
| CN111474404A (en) * | 2020-04-26 | 2020-07-31 | 杭州梅蒂斯智能科技有限公司 | Intelligent switch adjusting method with self-adaptive zero-crossing detection function |
| CN113433451B (en) * | 2021-06-21 | 2022-05-20 | 西蒙电气（中国）有限公司 | Relay zero-crossing switch |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645655A (en) * | 2013-12-24 | 2014-03-19 | 上海贝岭股份有限公司 | Control method of relay for one-phase smart electric meter |
| CN105261523A (en) * | 2015-10-29 | 2016-01-20 | 厦门市智联信通物联网科技有限公司 | Relay zero-crossing on and off control method and relay zero-crossing on and off control system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE516437C2 (en) * | 2000-06-07 | 2002-01-15 | Abb Ab | Method, apparatus, apparatus and use, computer program with computer product for predicting a zero passage of an AC |
| JP4825648B2 (en) * | 2006-11-28 | 2011-11-30 | 三菱電機株式会社 | Switch control device |
| CN101403778A (en) * | 2008-10-23 | 2009-04-08 | 泰豪科技股份有限公司 | Self-adapting assembly line type AC parameter measuring method |
| CN104934264B (en) * | 2015-07-09 | 2017-08-29 | 深圳市兰丁科技有限公司 | A kind of method and system of protective relay |
-
2016
- 2016-06-30 CN CN201610509497.9A patent/CN105958433B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645655A (en) * | 2013-12-24 | 2014-03-19 | 上海贝岭股份有限公司 | Control method of relay for one-phase smart electric meter |
| CN105261523A (en) * | 2015-10-29 | 2016-01-20 | 厦门市智联信通物联网科技有限公司 | Relay zero-crossing on and off control method and relay zero-crossing on and off control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105958433A (en) | 2016-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105958433B (en) | A kind of detection of relay zero-crossing, calibration method and device | |
| CN103424606B (en) | A kind of low voltage electric power carrier communication zero cross detection circuit of frequency self-adaption | |
| US20110101956A1 (en) | Electricity Usage Monitor System | |
| CN102955098A (en) | Neutral point non-effective earthing system single-phase earthing fault identification method | |
| CN103454535A (en) | Comprehensive load series connection arc fault identification method | |
| CN105356416A (en) | Three-phase alternating voltage phase sequence monitoring system | |
| CN102570198B (en) | Human body induction energy-saving electric shock preventing socket | |
| CN202679686U (en) | Voltage sampling and surge protection circuit of electromagnetic stove | |
| CN113550121B (en) | Washing machine door lock state detection method and device | |
| CN103308755B (en) | The insulation detection device of high voltage direct current remote electric power system and method | |
| CN109557892A (en) | A kind of DIO channel status detection method and embedded test system | |
| CN101345408B (en) | Method for assigning a fault current to one of the three phase currents of a three-phase system | |
| CN203961717U (en) | A kind of fire-proof roll screen control that there is the automatic detection of phase sequence and adjust function | |
| CN203377584U (en) | Three-phase non-midline phase-lack, undervoltage and overvoltage protection circuit | |
| CN205029898U (en) | Electromagnetic heating system and surge detection device thereof | |
| CN204575759U (en) | A kind of lightning current HF reject device with data upload function | |
| CN211426729U (en) | Fire detection alarm electric quantity detection circuit and fire detection alarm | |
| CN103675672A (en) | Pressure switch state detection circuit, circuit board, and electric heating product with circuit board | |
| CN105403756A (en) | Circuit device having ground wire live detection function | |
| CN208334499U (en) | A kind of Digital Instantaneous Frequency Measurement system | |
| CN109870667B (en) | Current transformer signal conditioning circuit with short circuit and open circuit detection functions | |
| CN209088589U (en) | Charging high-temperature protection circuit and cooker | |
| CN108508285B (en) | Method for detecting phase loss and positioning fault of buried line | |
| CN204129179U (en) | The isolated pick-up unit of on off state | |
| CN209357051U (en) | A kind of computer USB Communication Hub |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230425 Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Patentee after: QINGDAO HAIER INTELLIGENT HOME APPLIANCE TECHNOLOGY Co.,Ltd. Address before: 100086 Beijing Haidian District Zhichun Road 106 Zhongguancun Crown Plaza office 15 Floor Patentee before: BEIJING HAIER GUANGKE DIGITAL TECHNOLOGY Co.,Ltd. Patentee before: QINGDAO HAIER INTELLIGENT HOME APPLIANCE TECHNOLOGY Co.,Ltd. |