CN105514930B - The control method of protection device and protection device - Google Patents
The control method of protection device and protection device Download PDFInfo
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- CN105514930B CN105514930B CN201610027298.4A CN201610027298A CN105514930B CN 105514930 B CN105514930 B CN 105514930B CN 201610027298 A CN201610027298 A CN 201610027298A CN 105514930 B CN105514930 B CN 105514930B
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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
- H02H3/08—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
- H02H3/083—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 for three-phase systems
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Abstract
The control method of a kind of protection device and protection device provided in an embodiment of the present invention; it is related to electronic technology field; including with the first connection unit, the second connection unit; the zero line of first connection unit is electrically connected by the first variable connector with the zero line of second connection unit, and the zero line side of the first connection unit is electrically connected by the second variable connector with the zero line side of second connection unit；Protection device also includes the first discharge prevention unit, and the zero line of the first discharge prevention unit is electrically connected with first variable connector, and the zero line side of the first discharge prevention unit is electrically connected with second variable connector.Load appliance is isolated entirely from by this protection device when detecting the high current of burst with live wire and zero line, is effectively avoided the high current happened suddenly in supply line and is delivered to load appliance, load appliance is damaged.Improve existing thunder-lightning wiring board it is higher to installation environment requirement, cause its applicability not strong and the problem of poor lightning protection effect.
Description
Technical field
The present invention relates to electronic technology field, in particular to a kind of protection device and the controlling party of protection device
Method.
Background technology
Thunder and lightning is a kind of common natural electric discharge phenomena.Because thunder and lightning can discharge stronger electric energy in electric discharge, work as thunder and lightning
When hitting building, the electrical equipment in building may be caused to damage.Lightning ingress is to mainly having four approach in electrical equipment：For
Electric wire, telephone wire, feeder line of cable television or radiovision etc..In order to reduce the damage caused by Lightning disturbance, household electrical appliance
It would generally be switched on power by the wiring board of thunder-lightning.But, the wiring board of existing thunder-lightning to installation environment requirement compared with
Height, causes that its applicability is not strong and lightning protection effect is poor.
The content of the invention
It is an object of the invention to provide a kind of protection device and the control method of protection device, to improve existing lightning protection
The wiring board of electricity requires higher to installation environment, causes its applicability not strong and the problem of poor lightning protection effect.
In a first aspect, the embodiments of the invention provide a kind of protection device, including for city is electrically connected first is connected
Unit and for the second connection unit to protected electric power supply, the zero line of first connection unit passes through more than first
Way switch is electrically connected with the zero line of second connection unit, and the zero line side of first connection unit is opened by the second multichannel
Pass is electrically connected with the zero line side of second connection unit；The protection device also includes at least one first discharge prevention list
Member, the zero line of the first discharge prevention unit is electrically connected with first variable connector, the first discharge prevention unit
Zero line side electrically connected with second variable connector；
The protection device also includes circuit abnormality detection unit, the first relay, microcontroller and electric supply installation, institute
Circuit abnormality detection unit, the first relay and electric supply installation is stated to electrically connect with the microcontroller respectively, described first after
Electrical equipment is electrically connected with first variable connector；The circuit abnormality detection unit is arranged at the first connection unit correspondence
Place, for the circuit state value of first connection unit collected to be passed into the microcontroller, the microcontroller
For when detecting that the circuit state value exceedes default threshold value, being opened by the first multichannel described in first Control
The connection with the zero line of second connection unit is opened in shut-off, and is connected with the zero line of the first discharge prevention unit,
And control second variable connector disconnects the connection with the zero line side of second connection unit, and discharged with described first
The zero line side connection of protection location.
Second aspect, it is single the embodiments of the invention provide a kind of protection device, including for the first connection that signal is accessed
Member and the second connection unit for providing signal to protected electrical equipment, the signal input part of first connection unit pass through
First variable connector is electrically connected with the signal input part of second connection unit, and the earth terminal of first connection unit passes through
Second variable connector is electrically connected with the earth terminal of second connection unit；The protection device also includes at least one electric discharge and protected
Unit is protected, the input of the discharge prevention unit electrically connects with first variable connector, the discharge prevention unit connects
Ground terminal is electrically connected with second variable connector；The signal input part of first variable connector and first connection unit it
Between be serially connected with electric capacity；
The protection device also includes circuit abnormality detection unit, relay and microcontroller, the circuit abnormality inspection
Survey unit and relay is electrically connected with the microcontroller respectively, the relay is electrically connected with first variable connector；
The circuit abnormality detection unit is arranged at the first connection unit corresponding position, for first connection collected is single
The circuit state value of member passes to the microcontroller, so that the microcontroller passes through described in the Control more than first
Way switch disconnects the connection with the signal input part of second connection unit, and connects with the input of the discharge prevention unit
It is logical, and control second variable connector disconnects the connection with the earth terminal of second connection unit, and with the electric discharge
The earth terminal connection of protection location.
The third aspect, a kind of control method of protection device, applied to above-mentioned protection device, the control method includes：
The microcontroller receives the circuit state of first connection unit of the circuit abnormality detection unit collection
Value；
The circuit state value and default state threshold are contrasted, when the circuit state value is more than the state
During threshold value, the microcontroller sends control instruction to first relay, so that more than first described in the Control
Way switch disconnects the connection with the zero line of second connection unit, and connects with the zero line of the first discharge prevention unit
It is logical, and control second variable connector disconnects the connection with the zero line side of second connection unit, and with described first
The zero line side connection of discharge prevention unit.
The control method of a kind of protection device and protection device provided in an embodiment of the present invention, passes through the microcontroller
It is disconnected by the first variable connector described in first Control when detecting the circuit state value more than default threshold value
The connection with the zero line of second connection unit is opened, and is connected with the zero line of the first discharge prevention unit, and
Control second variable connector to disconnect the connection with the zero line side of second connection unit, and with first discharge prevention
The mode of the zero line side connection of unit so that the zero line of the first discharge prevention unit connects with the zero line of the first connection unit
Logical, the zero line side of the first discharge prevention unit is connected with the zero line side of the first connection unit, by load appliance and live wire and zero line
It is isolated entirely from, effectively avoids the high current happened suddenly in supply line and be delivered to load appliance, load appliance is caused brokenly
It is bad.Improve existing thunder-lightning wiring board it is higher to installation environment requirement, cause its applicability not strong and lightning protection effect compared with
Poor the problem of.
Other feature and advantage of invention will be illustrated in subsequent specification, also, partly become aobvious from specification
And be clear to, or by implementing understanding of the embodiment of the present invention.The purpose of the present invention and other advantages can be by the explanations write
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.By shown in accompanying drawing, above and other purpose of the invention, feature and advantage will become apparent from.In whole
Identical reference indicates identical part in accompanying drawing.Deliberately accompanying drawing, emphasis are not drawn by actual size equal proportion scaling
It is the purport for showing the present invention.
The structural representation for the protection device that Fig. 1 provides for first embodiment of the invention (load appliance is not isolated)；
The structural representation for the protection device that Fig. 2 provides for first embodiment of the invention (load appliance is isolated)；
The structure of multiple first discharge prevention units is provided with the protection device that Fig. 3 provides for first embodiment of the invention
Schematic diagram (load appliance is not isolated)；
The structural representation for the protection device that Fig. 4 provides for second embodiment of the invention；
The structural representation for the protection device that Fig. 5 provides for third embodiment of the invention；
The flow chart of the control method for the protection device that Fig. 6 provides for fourth embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
When thunder and lightning hits building, higher electric energy may be discharged on the power cable of building, and then for
The load appliance that power cable is connected to is damaged.In order to improve above mentioned problem, inventors herein propose a kind of protection device with
And the control method of protection device.
Fig. 1-3, a kind of protection device provided in an embodiment of the present invention are referred to, the protection device is used to supply to load appliance
While electric, load appliance can also be protected not broken by the burst high current of the generations such as the surge in supply line, thunder and lightning
It is bad.
Powered to realize to load appliance, protection device include being used for the first connection unit 101 for being electrically connected with city with
And for the second connection unit 102 to protected electric power supply.In implementation process, the first connection unit 101 can be for
Plug through being matched with the socket that city is electrically connected, or the wire to be directly connected with mains-supplied line.For the ease of to load
Electric power supply, as a kind of embodiment, the second connection unit 102 can be jack.
It is in order to have on service cable is detected during the high current of burst, load appliance is completely isolated with supply line
Open, the zero line of the first connection unit 101 is electrically connected by the zero line of the first variable connector and second connection unit 102
Connect, the zero line side of first connection unit 101 passes through the second variable connector and the zero line side of second connection unit 102 is electric
Connection.After load appliance is isolated, the high current of burst is discharged in advance in order to form discharge loop, the protection device
Also include at least one first discharge prevention unit 103, the zero line of the first discharge prevention unit 103 and more than described first
Way switch is electrically connected, and the zero line side of the first discharge prevention unit 103 is electrically connected with second variable connector.
In practice process, in order to detect the abnormalities such as the burst high current on power supply circuit, the protection device is also
Including circuit abnormality detection unit 105, the first relay 104, microcontroller 106 and electric supply installation.In the embodiment of the present invention
In be more than the highest input current that can bear of load appliance and can be considered high current.The circuit abnormality detection unit 105,
One relay 104 and electric supply installation are electrically connected with the microcontroller 106 respectively, first relay 104 and described the
One variable connector is electrically connected.Circuit abnormality detection unit 105 is used for the circuit state value in capture setting region, and by the electricity of collection
Line state value passes to microcontroller 106.Microcontroller 106, then for the circuit state value that will receive and default state
Threshold value is contrasted, and when contrast finds to exceed state threshold, takes corresponding safeguard measure.First relay 104 is then used to control
System above-mentioned the first variable connector and the second variable connector.
For example, as a kind of embodiment, circuit abnormality detection unit 105 can be current transformer, then corresponding shape
State threshold value is current threshold.The current value of first connection unit 101 of collection is delivered to microcontroller 106 by current transformer,
Microcontroller 106 then contrasts the current value of reception and default current threshold, when current value exceedes current threshold, then to the
One relay 104 sends control instruction, the zero line disconnection of the first variable connector of control and load appliance, with the first discharge prevention
The zero line connection of unit 103, and the zero line side of the second variable connector and load appliance disconnect, with the first discharge prevention unit
103 zero line side connection, to isolate load appliance.In addition, as another embodiment, circuit abnormality detection unit 105 is also
Can be voltage transformer, then corresponding state threshold is voltage threshold.The corresponding control flow of voltage transformer and electric current are mutual
The principle of sensor is identical, and here is omitted.
As a kind of preferably embodiment, the first variable connector and the second variable connector can be that single-pole double throw is opened
Close.Single-pole double-throw switch (SPDT) includes fixing end, first choice end and the second selection end.As shown in figure 1, when the first variable connector is
During single-pole double-throw switch (SPDT) K1, the zero line of first connection unit 101 is electrically connected with the fixing end, and second connection is single
The zero line of member 102 is electrically connected with the first choice end, the zero line of the first discharge prevention unit 103 and the described second selection
End electrical connection.When the second variable connector be single-pole double-throw switch (SPDT) K2 when, the zero line side of first connection unit 101 with it is described solid
Fixed end is electrically connected, and the zero line side of second connection unit 102 is electrically connected with the first choice end, the first discharge prevention unit
103 zero line side is electrically connected with the described second selection end.Certainly, the first variable connector and the second variable connector can also be other
The switch of type, such as double-point double-throw switch.
In the protection device that the present embodiment is provided, the area that the first connection unit 101 is flowed through at first for the high current of burst
Domain, in order to be effectively protected load appliance, the circuit abnormality detection unit 105 is arranged at 101 pairs of the first connection unit
It should locate, for the circuit state value of first connection unit 101 collected to be passed into the microcontroller 106.When micro-
When controller 106 detects the circuit state value more than default threshold value, control instruction is sent to the first relay 104, with
The first relay 104 is set to control first variable connector to disconnect the connection with the zero line of second connection unit 102, and
Connected with the zero line of the first discharge prevention unit 103, and the second variable connector of control disconnects and is connected with described second
The connection of the zero line side of unit 102, and connected with the zero line side of the first discharge prevention unit 103 so that the first electric discharge is protected
The zero line of shield unit 103 is connected with live wire, and zero line side is connected with zero line, and load appliance and live wire and zero line is completely isolated
Open.
When the burst current in supply line is stronger, in order to further lift the protection device that the present embodiment is provided
Discharging efficiency, preferably, the protection device also includes at least one second discharge prevention unit, second discharge prevention
Unit is parallel between the zero line of first connection unit 101 and zero line side.Further, it is also possible to by the way that the first electric discharge is protected
The mode that unit 103 is grounded is protected, discharging efficiency is lifted.
Remote control is carried out for the ease of user, preferably, the protection device also includes being used to receive controlled in wireless
The wireless communication unit of signal, the wireless communication unit is electrically connected with the microcontroller 106.The wireless communication unit can be with
For infrared communication unit or WIFI communication units.
It should be noted that in order to detect the drain conditions in protection device, being used as a kind of embodiment, Ke Yi
Zero sequence current mutual inductor is set in the protection device that the present embodiment is provided.
It should be noted that the quantity of the setting of above-mentioned the first discharge prevention unit 103 and the second protection location 107 can
To be determined according to actual conditions.The speed of usual thunder and lightning is all very rapidly, to ensure in order to further in thunder and lightning in power supply
The high current excited on circuit is delivered to before load appliance, and load appliance is completely isolated, as a kind of preferably embodiment,
As shown in figure 3, multiple first discharge prevention units 103 and the second protection location 107 can be set, in favor of being supplied in thunder and lightning more
Before the high current excited in electric line is delivered to, the zero line of each first discharge prevention unit 103 is connected with live wire, and zero
Line end is connected with zero line, so that multi-stage isolation discharge loop will be set between load appliance and supply line, is carried step by step with realizing
The mode of preceding electric discharge, discharges the electricity that rear class loop further passes over previous stage, to avoid because of thunder and lightning
Transmission speed is faster than the response speed of the protection device of the present embodiment offer, and the load appliance caused is damaged.
It should be noted that when set multiple first discharge prevention units 103 and the second protection location 107 formed it is multistage every
After discharge loop, in order to avoid by outside input circuit live wire and zero line short circuit, impacting or damaging to external transmission lines road
It is bad.Discharging in advance is preferably since second the first discharge prevention unit 103 along current direction.
Certainly, the first discharge prevention unit 103 and the second protection location can have numerous embodiments, can be specific real
Set during applying according to specific load appliance.For example, can be 600V piezo-resistance, it can also be put for 600V ceramics
Fulgurite.Second protection location can also be 800V piezo-resistance, can also be 800V ceramic discharge tubes.
A kind of protection device and protection device provided in an embodiment of the present invention, are detected by the microcontroller 106
When the circuit state value exceedes default threshold value, first variable connector is controlled to disconnect by first relay 104
With the connection of the zero line of second connection unit 102, and connected with the zero line of the first discharge prevention unit 103,
And control second variable connector disconnects the connection with the zero line side of second connection unit 102, and with described first
The mode of the zero line side connection of discharge prevention unit 103 so that the zero line of the first discharge prevention unit 103 is connected single with first
The zero line connection of member 101, the zero line side of the first discharge prevention unit 103 is connected with the zero line side of the first connection unit 101, will
Load appliance is isolated entirely from live wire and zero line, is effectively avoided the high current happened suddenly in supply line and is delivered to load electricity
Device, is damaged to load appliance.Improve existing thunder-lightning wiring board it is higher to installation environment requirement, cause its be applicable
Property not strong and lightning protection effect it is poor the problem of.
Second embodiment
Referring to Fig. 4, the protection device that the protection device that second embodiment of the invention is provided is provided with first embodiment is most
Main difference is that, in the present embodiment, in order to be played a protective role to microcontroller 106, the protection dress that the present embodiment is provided
Putting also includes being used for the transformer 201 of isolated buck effect, and the transformer 201 is provided with first input end a, the second input
B and output end are held, the first input end a is electrically connected with the zero line of first connection unit 101, second input
End b is electrically connected with the zero line side of first connection unit 101, and the output end is electrically connected with the microcontroller 106.Transformation
The initial coil and secondary coil of mutual inductance are isolation in device 201, then can play the work of certain isolation burst heavy current
With.
For different areas, the magnitude of voltage of civil power has difference, and the protection device provided for the ease of the present embodiment has
Preferable applicability, can switch input port according to different line voltages, preferably, the electric supply installation also includes storage
Energy electric capacity C1, the 3rd multipole switch K3 and the second relay 203, the transformer 201 are additionally provided with the 3rd input c, institute
Transformer 201 is stated including primary coil, the first input end a, the second input b and the 3rd input c with it is described just
The tie point of level coil connection, the second input b and the primary coil is located at the first input end a, the 3rd input
Hold between c and the tie point of the primary coil；The second input b is connected by the storage capacitor C1 with described first
The zero line side electrical connection of unit 101；The 3rd input c passes through the 3rd multipole switch K3 and first connection unit
101 zero line side electrical connection, second relay 203 is electric with the 3rd multipole switch K3 and microcontroller 106 respectively
Connection.Storage capacitor C1 is used for civil power incoming end when the second input b and the 3rd input c switches, and keeps transformer 201
Output current amplitude of variation will not be excessive, causes the power down of microcontroller 106.
For example, when the corresponding input voltages of the second input b are 260V, when the corresponding input voltages of the 3rd input c are
During 450V.When voltage transformer detects line voltage less than 260V, then in the presence of the second relay 203, by the 3rd
Multipole switch K3 cutter head is switched to the second input b, when civil power is higher than 260V, in the presence of the second relay, is inciting somebody to action
3rd multipole switch K3 cutter head is switched to the 3rd input c.
In order to further lift the stability of the output current of transformer 201, the electric supply installation also includes current rectification
Filter circuit 202, the input of the current rectification filter circuit 202 is connected with the output end of the transformer 201, the electricity
The output end of stream current rectifying and wave filtering circuit 202 is electrically connected with the microcontroller 106.
A kind of protection device and protection device provided in an embodiment of the present invention, not only realize the isolation to load appliance
Protection, also achieves the protection to the microcontroller 106 in protection device, further ensure that the protection that the present embodiment is provided
Device can effectively work for a long time.
Referring to Fig. 5, a kind of protection device that third embodiment of the invention is provided, including connect for signal is accessed first
Order member 101 and the second connection unit 102 for providing signal to protected electrical equipment, first connection unit 101
Signal input part is electrically connected by the first variable connector with the signal input part of second connection unit 102, and described first connects
The earth terminal of order member 101 is electrically connected by the second variable connector with the earth terminal of second connection unit 102；The protection
Device also includes at least one discharge prevention unit, and the input of the discharge prevention unit is electrically connected with first variable connector
Connect, the earth terminal of the discharge prevention unit is electrically connected with second variable connector；First variable connector and described the
Electric capacity C2 is serially connected between the signal input part of one connection unit 101；Second variable connector and first connection unit
Electric capacity C3 is serially connected between 101 earth terminal.
The protection device also includes circuit abnormality detection unit 105, relay and microcontroller 106, the circuit
Abnormality detecting unit 105 and relay are electrically connected with the microcontroller 106 respectively, the relay and first multichannel
Switch electrical connection；The circuit abnormality detection unit 105 is arranged at the corresponding position of the first connection unit 101, for that will gather
To the circuit state value of first connection unit 101 pass to the microcontroller 106 so that the microcontroller 106
Company with the signal input part of second connection unit 102 is disconnected by the first variable connector described in the Control
Connect, and connected with the input of the discharge prevention unit, and control second variable connector to disconnect and connect with described second
The connection of the earth terminal of order member 102, and connected with the earth terminal of the discharge prevention unit.
In the present embodiment, the first connection unit 101 and the second connection unit 102 can be coaxial fitting.Need
It is noted that the quantity of the setting of the first discharge prevention unit 1 and the second protection location in the present embodiment can basis
Actual conditions decision, the electricity in the region thunder and lightning more frequent or power supply circuit for the protection device that setting the present embodiment is provided
Gush more strong, several first discharge prevention units and the second protection location can be set more.Certainly, the first discharge prevention unit and
Second protection location can have numerous embodiments, it can be set in specific implementation process according to specific load appliance.
Can also be 30V ceramic discharge tubes for example, can be 30V piezo-resistance.Second protection location can also be the pressure-sensitive of 600V
Resistance, can also be 600V ceramic discharge tubes.
A kind of protection device and protection device provided in an embodiment of the present invention, are detected by the microcontroller 106
When the circuit state value exceedes default threshold value, first variable connector is controlled to disconnect by first relay 104
With the connection of the signal input part of second connection unit 102, and connect with the input of the first discharge prevention unit 103
It is logical, and control second variable connector disconnects the connection with the earth terminal of second connection unit 102, and with described the
The mode of the earth terminal connection of one discharge prevention unit 103 so that the input of the first discharge prevention unit 103 is connected with first
The signal input part connection of unit 101 so that the earth terminal of the first discharge prevention unit 103 connects with the first connection unit 101
Ground terminal is connected, and load appliance is isolated entirely from signal input part and earth terminal, effectively avoided on signal input line road
The high current of burst is delivered to load appliance, and load appliance is damaged.Improve existing thunder-lightning wiring board to peace
Fill environmental requirement higher, cause its applicability not strong and the problem of poor lightning protection effect.
Referring to Fig. 6, a kind of control method for protection device that fourth embodiment of the invention is provided, implements applied to first
Protection device in example, the control method includes：
Step S401：The microcontroller receives first connection unit of the circuit abnormality detection unit collection
Circuit state value；
Step S402：The circuit state value and default state threshold are contrasted, when the circuit state value is big
When the state threshold, the microcontroller sends control instruction to first relay, so that the Control
First variable connector disconnects the connection with the zero line of second connection unit, and with the first discharge prevention unit
Zero line connection, and control second variable connector disconnects the connection with the zero line side of second connection unit, and
Connected with the zero line side of the first discharge prevention unit.
A kind of control method of protection device provided in an embodiment of the present invention, the electricity is detected by the microcontroller
When line state value exceedes default threshold value, disconnected and described second by the first variable connector described in first Control
The connection of the zero line of connection unit, and connected with the zero line of the first discharge prevention unit, and control described second
Variable connector disconnects the connection with the zero line side of second connection unit, and with the zero line side of the first discharge prevention unit
The mode of connection so that the zero line of the first discharge prevention unit is connected with the zero line of the first connection unit, the first electric discharge is protected
The zero line side of shield unit is connected with the zero line side of the first connection unit, and load appliance is isolated entirely from live wire and zero line, had
The high current happened suddenly in supply line that avoids of effect is delivered to load appliance, and load appliance is damaged.Improve existing
The wiring board of thunder-lightning requires higher to installation environment, causes its applicability not strong and the problem of poor lightning protection effect.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the method for foregoing description
The specific work process of middle design device, may be referred to the corresponding process in aforementioned means embodiment, will not be repeated here.
, can be with several embodiments provided herein, it should be understood that disclosed systems, devices and methods
Realize by another way.Device embodiment described above is only schematical, for example, the division of the unit,
It is only a kind of division of logic function, there can be other dividing mode when actually realizing, in another example, multiple units or component can
To combine or be desirably integrated into another system, or some features can be ignored, or not perform.It is another, it is shown or beg for
The coupling each other of opinion or direct-coupling or communication connection can be by some communication interfaces, device or unit it is indirect
Coupling is communicated to connect, and can be electrical, machinery or other forms.
The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein it can realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of protection device, it is characterised in that including the first connection unit for being electrically connected with city and for being protected
The second connection unit of electric power supply is protected, the zero line of first connection unit is connected by the first variable connector with described second
The zero line electrical connection of order member, the zero line side of first connection unit is connected single with described second by the second variable connector
The zero line side electrical connection of member；The protection device also includes at least one first discharge prevention unit, first discharge prevention
The zero line of unit is electrically connected with first variable connector, the zero line side of the first discharge prevention unit and more than described second
Way switch is electrically connected；
The protection device also includes circuit abnormality detection unit, the first relay, microcontroller and electric supply installation, the electricity
Road abnormality detecting unit, the first relay and electric supply installation are electrically connected with the microcontroller respectively, first relay
Electrically connected with first variable connector；The circuit abnormality detection unit is arranged at the first connection unit corresponding position, uses
In the circuit state value of first connection unit collected is passed into the microcontroller, the microcontroller is used to work as
When detecting that the circuit state value exceedes default threshold value, disconnected by the first variable connector described in first Control
With the connection of the zero line of second connection unit, and connected with the zero line of the first discharge prevention unit, and control
Make second variable connector and disconnect connection with the zero line side of second connection unit, and with the first discharge prevention list
The zero line side connection of member.
2. protection device according to claim 1, it is characterised in that the protection device also includes at least one and second put
Electric protection unit, the second discharge prevention unit is parallel between the zero line of first connection unit and zero line side.
3. protection device according to claim 1, it is characterised in that first variable connector is single-pole double-throw switch (SPDT),
The single-pole double-throw switch (SPDT) includes fixing end, first choice end and the second selection end；The zero line of first connection unit
Electrically connected with the fixing end, the zero line of second connection unit is electrically connected with the first choice end, the first electric discharge is protected
The zero line for protecting unit is electrically connected with the described second selection end.
4. protection device according to claim 1, it is characterised in that the protection device also includes being used to receive wireless controlled
The wireless communication unit of signal processed, the wireless communication unit is electrically connected with the microcontroller.
5. according to any described protection devices of claim 1-4, it is characterised in that the circuit abnormality detection unit is electric current
Transformer or voltage transformer.
6. protection device according to claim 1, it is characterised in that the electric supply installation includes being used for isolated buck work
Transformer, the transformer is provided with first input end, the second input and output end, the first input end and institute
The zero line electrical connection of the first connection unit is stated, second input is electrically connected with the zero line side of first connection unit,
The output end is electrically connected with the microcontroller.
7. protection device according to claim 6, it is characterised in that the electric supply installation also includes storage capacitor, the 3rd
Multipole switch and the second relay, the transformer are additionally provided with the 3rd input, and the transformer includes primary coil, institute
State first input end, the second input and the 3rd input to be connected with the primary coil, second input and institute
The tie point for stating primary coil is located between the tie point of the first input end, the 3rd input and the primary coil；Institute
The second input is stated to electrically connect with the zero line side of first connection unit by the storage capacitor；3rd input leads to
Cross the 3rd multipole switch to electrically connect with the zero line side of first connection unit, second relay is respectively with described
Three multipole switches and microcontroller electrical connection.
8. protection device according to claim 7, it is characterised in that the electric supply installation also includes current rectification filtered electrical
Road, the input of the current rectification filter circuit is connected with the output end of the transformer, the current rectification filter circuit
Output end electrically connected with the microcontroller.
9. a kind of protection device, it is characterised in that including the first connection unit accessed for signal and for protected
Electrical equipment provides the second connection unit of signal, the signal input part of first connection unit by the first variable connector with it is described
The signal input part electrical connection of second connection unit, the earth terminal of first connection unit by the second variable connector with it is described
The earth terminal electrical connection of second connection unit；The protection device also includes at least one discharge prevention unit, and the electric discharge is protected
The input of shield unit is electrically connected with first variable connector, the earth terminal of the discharge prevention unit and second multichannel
Switch electrical connection；Electric capacity is serially connected between the signal input part of first variable connector and first connection unit；
The protection device also includes circuit abnormality detection unit, relay and microcontroller, and the circuit abnormality detection is single
Member and relay are electrically connected with the microcontroller respectively, and the relay is electrically connected with first variable connector；It is described
Circuit abnormality detection unit is arranged at the first connection unit corresponding position, for by first connection unit collected
Circuit state value passes to the microcontroller, so that the microcontroller is opened by the first multichannel described in the Control
The connection with the signal input part of second connection unit is opened in shut-off, and is connected with the input of the discharge prevention unit,
And control second variable connector disconnects the connection with the earth terminal of second connection unit, and with the discharge prevention
The earth terminal connection of unit.
10. a kind of control method of protection device, it is characterised in that described applied to protection device as claimed in claim 1
Control method includes：
The microcontroller receives the circuit state value of first connection unit of the circuit abnormality detection unit collection；
The circuit state value and default state threshold are contrasted, when the circuit state value is more than the state threshold
When, the microcontroller sends control instruction to first relay, so that the first multichannel is opened described in the Control
The connection with the zero line of second connection unit is opened in shut-off, and is connected with the zero line of the first discharge prevention unit,
And control second variable connector disconnects the connection with the zero line side of second connection unit, and discharged with described first
The zero line side connection of protection location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610027298.4A CN105514930B (en) | 2016-01-15 | 2016-01-15 | The control method of protection device and protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610027298.4A CN105514930B (en) | 2016-01-15 | 2016-01-15 | The control method of protection device and protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105514930A CN105514930A (en) | 2016-04-20 |
| CN105514930B true CN105514930B (en) | 2017-11-03 |
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ID=55722699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610027298.4A Expired - Fee Related CN105514930B (en) | 2016-01-15 | 2016-01-15 | The control method of protection device and protection device |
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| Country | Link |
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| CN (1) | CN105514930B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU663473B2 (en) * | 1990-10-12 | 1995-10-12 | Raychem Limited | Circuit protection arrangement |
| CN2207019Y (en) * | 1994-12-02 | 1995-09-06 | 吴锡洲 | Safety protection device of power socket |
| CN2865098Y (en) * | 2005-12-19 | 2007-01-31 | 王树武 | Lightening arrester for power supply |
| TW200838088A (en) * | 2007-03-07 | 2008-09-16 | Sinbon Elect Co Ltd | Power source protection circuit |
| CN102804538B (en) * | 2009-06-24 | 2014-12-03 | 松下电器产业株式会社 | Power supply protection circuit and motor drive device provided with same |
| WO2013170301A1 (en) * | 2012-05-16 | 2013-11-21 | Baldamero Gato | Electrical protection device, system and control circuit |
| CN205355778U (en) * | 2016-01-15 | 2016-06-29 | 周金滚 | Protection device |
-
2016
- 2016-01-15 CN CN201610027298.4A patent/CN105514930B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105514930A (en) | 2016-04-20 |
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