CN204992550U - Electrical safety detects protection circuit, switchgear and socket - Google Patents
Electrical safety detects protection circuit, switchgear and socket Download PDFInfo
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- CN204992550U CN204992550U CN201520729571.9U CN201520729571U CN204992550U CN 204992550 U CN204992550 U CN 204992550U CN 201520729571 U CN201520729571 U CN 201520729571U CN 204992550 U CN204992550 U CN 204992550U
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- operational amplifier
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- current signal
- residual current
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- 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
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- 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
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/14—Protecting elements, switches, relays or circuit breakers
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
Abstract
The utility model provides an electrical safety detects protection circuit, switchgear and socket, circuit connection is on the power supply line with the electric loading in the protection, includes: current sensor gathers current signal on the power supply line, voltage sensor gathers voltage signal on the power supply line, the residual current sensor is gathered residual current signal on the power supply line, processing circuit receives current signal, voltage signal and residual current signal carry out the preliminary treatment, the controller with processing circuit connects, judges after the preliminary treatment whether current signal, voltage signal and residual current signal surpass the threshold value that corresponds, if then control is sent the alarm and/or is cut off and supply power with the electric loading. This protection circuit utilization detects the sensor, constitutes an electric monitored control system, and in the convenience of guaranteeing intelligent house, the state of real time monitoring load makes up safe home systems.
Description
Technical field
The utility model relates to Smart Home field, particularly relates to a kind of Electrical Safety and detects protection circuit, switchgear and socket.
Background technology
Common socket: have the insertable seat of one or more circuit connections, various wiring can be inserted by it, be convenient to and other circuit ON.By the connection between circuit and copper piece and disconnection, reach the connecting and disconnecting finally reaching this partial circuit.Along with the develop rapidly of economy and the raising of people's lives, power consumption is also in continuous increase, and new power consumption equipment, smart machine are also ceaselessly emerging in large numbers; And patch the easily a kind of physical device of traditional socket just to electric wire, lack defencive function.Especially protection mechanism and implementation method are lacked to the electric leakage and electric arc that cause electrical fire.
PDU socket: PDU (PowerDistributionUnit) is the power distribution manager that PDU possesses power distribution and management function.The equipment that PDU socket connects is generally be placed on machine room, the equipment such as such as senior computer, server, therefore has the functions such as lightning protection function, master control switch, overload protection, current/voltage display, remote monitoring function, cigarette temperature-sensitive humidity on-line checkingi.But, also lack the protection to electric leakage, electric arc and implementation method.
About the generation of electric arc, socket loosens the sparking caused and belongs to serial arc; The electric arc caused of striking sparks between the live wire that circuit breakage causes and zero line is parallel arc.
In prior art, the problem of the serial arc adopting current transformer effectively to solve by the electric current on detection line, and this detection method is detection method general in industry; But be difficult to solve the problem of parallel arc, because the electric current that parallel arc sparking produces is very little, energy is high, only by detect electric current and cannot identify accurately parallel arc or discrimination not high.
Utility model content
The utility model object is to provide a kind of Electrical Safety to detect protection circuit, be intended to the switch in solution electric process or socket loosens or circuit is damaged time produce the problem of electric arc and electric leakage.
The utility model provides a kind of Electrical Safety and detects protection circuit, is connected in the supply line by electric loading, comprises:
Current sensor, gathers in described supply line in order to analyze the current signal of serial arc;
Voltage sensor, gathers in described supply line in order to analyze the voltage signal of parallel arc;
Residual current transducer, gathers in described supply line in order to analyze the residual current signal of leakage current;
Signal processing circuit, is connected with described current sensor, voltage sensor and residual current transducer, receives described current signal, voltage signal and residual current signal and carries out preliminary treatment;
Controller, be connected with described signal processing circuit, receive pretreated described current signal, voltage signal and residual current signal, judge whether described pretreated described current signal, voltage signal and residual current signal exceed corresponding threshold value, if then control give the alarm and/or cut off electricity consumption load supplying.
Further, described signal processing circuit comprises the first operational amplifier, the second operational amplifier, the 3rd operational amplifier and AD conversion chip, wherein:
The negative input end of described first operational amplifier, the second operational amplifier, the 3rd operational amplifier is connected with described current sensor, voltage sensor, residual current transducer respectively by the first electric capacity; The positive input terminal of described first operational amplifier, the second operational amplifier, the 3rd operational amplifier connects reference voltage respectively, and by the second capacity earth, the output of described first operational amplifier, the second operational amplifier, the 3rd operational amplifier is connected with the input of described AD conversion chip respectively, controller described in the output termination of described AD conversion chip.
Further, described controller is single-chip microcomputer.
The utility model additionally provides a kind of switchgear, is provided with above-mentioned Electrical Safety and detects protection circuit.
The utility model additionally provides a kind of socket, is provided with above-mentioned Electrical Safety and detects protection circuit.
The above-mentioned switch being provided with Electrical Safety detection protection circuit or socket arrange current/voltage detecting sensor, form an electrical monitoring system, while the convenience ensureing Smart Home, monitoring load or the state by electric line, build safe house system in real time.Simultaneously by electric leakage, electric arc, power consumption state information, do total system monitoring in real time, understand each load or the situation by electric line, utilize integration algorithm and large data analysis mode, state ageing predetermination and analysis are carried out to unit power consumption equipment, give warning in advance, realize the security monitoring of equipment and energy-conservation.
Accompanying drawing explanation
Fig. 1 is the circuit module figure that in the utility model preferred embodiment, Electrical Safety detects protection circuit;
Fig. 2 is the circuit theory diagrams that in the utility model preferred embodiment, Electrical Safety detects protection circuit.
Embodiment
In order to make the technical problems to be solved in the utility model, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, Electrical Safety in the utility model preferred embodiment detects protection circuit, be connected to in electric loading or supply line, as being arranged on electric switch, with in electrical socket, hybrid relay, intelligent conversion relay, light-adjusting module, lighting control module or bus power source module.Electrical Safety detects protection circuit, comprises current sensor 110, voltage sensor 120, residual current transducer 130, signal processing circuit 140 and controller 150.
Current sensor 110 is for gathering the current signal in order to analyze serial arc in described supply line; Voltage sensor 120 is for gathering in described supply line in order to analyze the voltage signal of parallel arc; Residual current transducer 130 is for gathering in described supply line in order to analyze the residual current signal of leakage current; Signal processing circuit 140 is connected with described current sensor 110, voltage sensor 120 and residual current transducer 130, receives described current signal, voltage signal and residual current signal and carries out preliminary treatment; Controller 150 is connected with described signal processing circuit 140, receive pretreated described current signal, voltage signal and residual current signal, judge whether described pretreated described current signal, voltage signal and residual current signal exceed corresponding threshold value, if then control give the alarm and/or cut off electricity consumption load supplying.Or pretreated described current signal, voltage signal and residual current signal and predetermined threshold value compared obtain comparative result, control give the alarm and/or cut off electricity consumption load supplying according to comparative result.
Described controller 150 is single-chip microcomputer, the analysis for current leakage module 151 of establishing in controller 150, by the analysis to the residual current information collected, contrasting, exceeding predetermined threshold value and being then recorded as qualification result one according to obtaining electric leakage with predetermined threshold value.Thereafter controller 150 sends the instruction performing and give the alarm and/or cut off electricity consumption load supplying according to this result one.
Particularly, the analysis for current leakage module 151 of described controller 150 sets up the initial curve corresponding with normal residual current, in normal state, automatically sets up the initial curve of the normal electrical leakage (residual current) of load.Wherein, described residual current signal at least comprises residual current duration and/or residual current electricity.Current residual electric current is fitted to corresponding described initial curve, judges whether current residual electric current exceedes predetermined threshold value, if then control gives the alarm and/or cuts off electricity consumption load supplying.By determining error level, determining the electric leakage rank of load or electric wire, often reaching the early warning that a rank carries out different brackets.
In the present embodiment, when the residual current detected is greater than the first predetermined threshold value (if initial residual current is more than 30% ~ 50%), then give the alarm; When the residual current detected is greater than the second predetermined threshold value (if initial residual current is more than 65% ~ 80%), then control to give the alarm and the power supply of cut-out electric loading.
Controller 150 establishes fault electric arc analysis module 152 in going back, this fault electric arc analysis module 152 is by the analysis to the current information collected, judge it is that fault electric arc is then recorded as qualification result two according to national standard, due to the mainly electric current of serial arc impact, smaller to voltage influence, therefore this electric current judges the judgement mainly tackling series circuit.This fault electric arc analysis module 152, by the analysis to the information of voltage collected, judges it is that fault electric arc is then recorded as qualification result three according to national standard; Because parallel arc mainly affects local voltage, can affect the voltage curve of local when electric arc occurs, therefore voltage mainly judges parallel arc.Thereafter controller 150 sends the instruction performing and give the alarm and/or cut off electricity consumption load supplying according to this result two, 3.
Particularly, fault electric arc analysis module 152 judges whether current current signal and voltage signal exceed corresponding predetermined threshold value; Specifically refer to whether the relevant parameter (electric arc generation durations and electric arc amplitude) of serial arc and the parallel arc comprised in current signal and voltage signal exceedes predetermined threshold value.About this predetermined threshold value, national standard thinks that electric arc continues more than 13 cycles, and the amplitude of electric arc reaches 10% of use load current, is that deleterious current needs and alarm.Faint arc current and short-period arc current are thought accidentally a kind of, can not report to the police.But electric arc has very strong harmfulness, occur that electric arc can ignite the combustibles of surrounding, therefore adds hard arc analysis and has a very big significance.
If exceed, be then judged to be fault electric arc, control give the alarm and cut off electricity consumption load supplying; If do not exceed, then carry out carrying out classification and statistical analysis with electric arc generation durations and electric arc amplitude to current current signal and voltage signal, namely for not meeting fault electric arc standard, but the information that may be further development of fault electric arc is preserved equally, and analyzes.
When electric arc tendency information is when progressively worsening, then carry out early warning.First controller 150 carries out classifying with cycle length to the electric arc received, and carries out matching after classification, finds trend.For a statistical analysis, when electric arc trend is progressively worsening, such as: 3 cycle electric arcs, to 5 cycle arc transfer, by occupation proportion in lifting, then carry out early warning, the position of prompting intelligent node and possible fault.Namely the described state that electric arc tendency information is progressively worsening comprises: the generation durations of electric arc in the electric arc amplitude of lasting increase and/or electric arc in lasting increase.
Current signal, voltage signal and residual current signal described in signal processing circuit 140 and carry out preliminary treatment comprise signal filtering, signal amplify and analog-to-digital conversion.With reference to figure 2, described signal processing circuit 140 comprises the first operational amplifier U1, the second operational amplifier U2, the 3rd operational amplifier U3 and AD conversion chip U4.
The negative input end of described first operational amplifier U1, the second operational amplifier U2, the 3rd operational amplifier U3 is connected with described current sensor 110, voltage sensor 120, residual current transducer 130 respectively by the first electric capacity C1; The positive input terminal of described first operational amplifier U1, the second operational amplifier U2, the 3rd operational amplifier U3 meets reference voltage V ref respectively, and by the second electric capacity C2 ground connection, the output of described first operational amplifier U1, the second operational amplifier U2, the 3rd operational amplifier U3 is connected with the input of described AD conversion chip U4 respectively, controller 150 described in the output termination of described AD conversion chip U4.
Voltage signal, current signal and residual current signal, pass through respectively through the first operational amplifier U1, the second operational amplifier U2, the 3rd operational amplifier U3 signal amplification filtering, deliver to AD conversion chip U4 and carry out analog/digital conversion, data after conversion, the communication modes through serial SPI is sent to controller 150 inside for analysis.
In other embodiments, after controller 150 receives pretreated described current signal, voltage signal and residual current signal, pretreated described current signal, voltage signal and residual current signal and predetermined threshold value are compared and obtains comparative result.Described comparative result is uploaded to intelligent appliance control centre (as presence server or Cloud Server), intelligent appliance control centre sends the instruction of the action performing alarm and/or cut power supply to described controller 150 according to described comparative result, controller 150 performs corresponding actions.
Those skilled in the art can be well understood to, for convenience of description and succinctly, only be illustrated with the division of each functional unit of above-mentioned controller, in practical application, can distribute as required and by above-mentioned functions and be completed by different functional units, internal structure by described controller is divided into different functional units or module, to complete all or part of function described above.Each functional unit in embodiment is integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated, above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.In addition, the concrete title of each functional unit, also just for the ease of mutual differentiation, is not limited to the protection range of the application.The specific works process of unit in said apparatus, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In sum, the switch or the socket that are provided with Electrical Safety detection protection circuit arrange current/voltage detecting sensor, form an electrical monitoring system, while the convenience ensureing Smart Home, real-time monitoring load or the state by electric line, build safe house system.Simultaneously by electric leakage, electric arc, power consumption state information, do total system monitoring in real time, understand each load or the situation by electric line, utilize integration algorithm and large data analysis mode, state ageing predetermination and analysis are carried out to unit power consumption equipment, give warning in advance, realize the security monitoring of equipment and energy-conservation.
If described integrated controller unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that the technical scheme of the utility model embodiment contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) perform all or part of step of method described in each embodiment of the utility model embodiment.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
The above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model embodiment.
Claims (5)
1. Electrical Safety detects a protection circuit, is connected in the supply line by electric loading, it is characterized in that, comprising:
Current sensor, gathers in described supply line in order to analyze the current signal of serial arc;
Voltage sensor, gathers in described supply line in order to analyze the voltage signal of parallel arc;
Residual current transducer, gathers in described supply line in order to analyze the residual current signal of leakage current;
Signal processing circuit, is connected with described current sensor, voltage sensor and residual current transducer, receives described current signal, voltage signal and residual current signal and carries out preliminary treatment;
Controller, be connected with described signal processing circuit, receive pretreated described current signal, voltage signal and residual current signal, judge whether described pretreated described current signal, voltage signal and residual current signal exceed corresponding threshold value, if then control give the alarm and/or cut off electricity consumption load supplying.
2. Electrical Safety as claimed in claim 1 detects protection circuit, and it is characterized in that, described signal processing circuit comprises the first operational amplifier, the second operational amplifier, the 3rd operational amplifier and AD conversion chip, wherein:
The negative input end of described first operational amplifier, the second operational amplifier, the 3rd operational amplifier is connected with described current sensor, voltage sensor, residual current transducer respectively by the first electric capacity; The positive input terminal of described first operational amplifier, the second operational amplifier, the 3rd operational amplifier connects reference voltage respectively, and by the second capacity earth, the output of described first operational amplifier, the second operational amplifier, the 3rd operational amplifier is connected with the input of described AD conversion chip respectively, controller described in the output termination of described AD conversion chip.
3. Electrical Safety as claimed in claim 1 detects protection circuit, and it is characterized in that, described controller is single-chip microcomputer.
4. a switchgear, is characterized in that, the Electrical Safety be provided with described in any one of claims 1 to 3 detects protection circuit.
5. a socket, is characterized in that, the Electrical Safety be provided with described in any one of claims 1 to 3 detects protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520729571.9U CN204992550U (en) | 2015-09-18 | 2015-09-18 | Electrical safety detects protection circuit, switchgear and socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520729571.9U CN204992550U (en) | 2015-09-18 | 2015-09-18 | Electrical safety detects protection circuit, switchgear and socket |
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| Publication Number | Publication Date |
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| CN204992550U true CN204992550U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520729571.9U Active CN204992550U (en) | 2015-09-18 | 2015-09-18 | Electrical safety detects protection circuit, switchgear and socket |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676661A (en) * | 2016-03-16 | 2016-06-15 | 北京智慧小树苗科技有限公司 | Intelligent home electric monitoring platform |
| CN107370123A (en) * | 2016-05-13 | 2017-11-21 | 上海电科电器科技有限公司 | Arc fault detection device |
| CN107370124A (en) * | 2016-05-13 | 2017-11-21 | 上海电科电器科技有限公司 | Method for detecting arc |
| CN107994645A (en) * | 2017-12-21 | 2018-05-04 | 杭州普创电子有限公司 | A kind of charge protection method, device, equipment and computer-readable recording medium |
-
2015
- 2015-09-18 CN CN201520729571.9U patent/CN204992550U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676661A (en) * | 2016-03-16 | 2016-06-15 | 北京智慧小树苗科技有限公司 | Intelligent home electric monitoring platform |
| CN107370123A (en) * | 2016-05-13 | 2017-11-21 | 上海电科电器科技有限公司 | Arc fault detection device |
| CN107370124A (en) * | 2016-05-13 | 2017-11-21 | 上海电科电器科技有限公司 | Method for detecting arc |
| CN107370123B (en) * | 2016-05-13 | 2019-02-26 | 上海电科电器科技有限公司 | Arc fault detection device |
| CN107370124B (en) * | 2016-05-13 | 2019-05-03 | 上海电科电器科技有限公司 | Method for detecting arc |
| CN107994645A (en) * | 2017-12-21 | 2018-05-04 | 杭州普创电子有限公司 | A kind of charge protection method, device, equipment and computer-readable recording medium |
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| C14 | Grant of patent or utility model | ||
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