CN108649399A - Safety power strip plate - Google Patents
Safety power strip plate Download PDFInfo
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- CN108649399A CN108649399A CN201810442236.9A CN201810442236A CN108649399A CN 108649399 A CN108649399 A CN 108649399A CN 201810442236 A CN201810442236 A CN 201810442236A CN 108649399 A CN108649399 A CN 108649399A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6675—Structural association with built-in electrical component with built-in electronic circuit with built-in power supply
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
This application involves a kind of safety power strip plates, including：Input, output end, relay, driving output circuit, normal detection circuit, abnormal detection circuit；Relay includes two normally opened contacts and coil；Two normally opened contacts are separately connected input terminal and output end；It includes two input terminals to drive output circuit, is respectively used to input normal signal and stop signal；Normal detection circuit is connect with the input terminal for inputting normal signal of the driving output circuit, for generating normal signal, and is sent to driving output circuit；Abnormal detection circuit is connect with the input terminal for inputting stop signal of driving output circuit, for generating stop signal, and is sent to driving output circuit；Driving output circuit keeps output open circuit for exporting electric signal after receiving normal signal to coil after not receiving normal signal or receiving stop signal；Coil is used for two normally opened contacts of triggering after the electric signal for receiving driving output circuit output and is closed.
Description
Technical field
This application involves electrical equipment field more particularly to a kind of safety power strip plates.
Background technology
Electric power plug socket plate is also known as socket, is commonly called as power board, is daily necessities.Such as in the family, multiple electric appliances need
When charging, it is necessary to use interleaving plate.
In the related technology, the realization method of some interleaving plates, but there is a problem of in secure context it is certain, for example, high
Idle job, moist washing bay, with the presence of sharp instrument metal, the security risk when children gather the uses such as place.
Invention content
To overcome the problems, such as at least to a certain extent present in the relevant technologies, the application provides a kind of safety power strip
Plate.
The embodiment of the present application provides a kind of safety power strip plate, including：Input, output end, relay, driving are defeated
Go out circuit, normal detection circuit, abnormal detection circuit；The relay includes two normally opened contacts and coil；It is described two normal
It opens contact and is separately connected input terminal and output end；The output end of the driving output circuit connects the coil；The driving is defeated
It includes two input terminals to go out circuit, is respectively used to input normal signal and stop signal；The normal detection circuit and the drive
The input terminal connection for inputting normal signal of dynamic output circuit, is sent to for generating normal signal, and by normal signal
The driving output circuit；The input terminal for inputting stop signal of the abnormal detection circuit and the driving output circuit
Connection, the driving output circuit is sent to for generating stop signal, and by stop signal；The driving output circuit is used for
Electric signal is exported after receiving normal signal to the coil, and is not being received normal signal or received stop signal
Output open circuit is kept afterwards；The coil is used to after the electric signal for receiving the driving output circuit output trigger described two
Normally opened contact is closed, and keeps described two normally opened contacts disconnected after the electric signal for not receiving the driving output circuit output
It opens.
Optionally, the input terminal includes first input end and the second input terminal, and the output end includes the first output end
And second output terminal, the normal signal are enabling signal, the normal detection circuit includes load detecting start-up circuit, described
Load detecting start-up circuit includes：NPN type triode, PNP type triode, the first photoelectrical coupler (U2)；NPN type triode
Emitting stage connects first input end, and the ground level of NPN type triode connects first input end by first resistor (R1) all the way,
The another way of the ground level of NPN type triode connects the first output end by second resistance (R2) and 3rd resistor (R3)；Positive-negative-positive three
The emitting stage of pole pipe connects the second input terminal, the ground level of PNP type triode it is defeated by the connection second of the 7th resistance (R7) all the way
Enter end, the another way of the ground level of PNP type triode connects second output terminal by the 4th resistance (R4) and the 5th resistance (R5)；
The current collection grade of PNP type triode connects the hair of the first photoelectrical coupler (U2) by the first diode (D1) and the 6th resistance (R6)
One end of light pipe, the current collection grade of NPN type triode connect the other end of the luminous tube of the first photoelectrical coupler (U2)；First photoelectricity
The output end of coupler (U2) for exporting enabling signal, and be transferred to the driving output circuit for inputting normal signal
Input terminal.
Optionally, the normal signal is holding signal, and the interleaving plate further includes：First current transformer (L1) and
One rectifier bridge (D5)；The first winding of first current transformer (L1) is connected in the circuit of output end, secondary winding and first
The input terminal of rectifier bridge (D5) is connected；The normal detection circuit includes load detecting holding circuit, and the load detecting is kept
Circuit includes：First voltage comparator (U1B) and the second diode (D12)；The cathode output end of first rectifier bridge (D5) and
The negative input of one voltage comparator (U1B) connects, the cathode output end ground connection of the first rectifier bridge (D5)；First voltage compares
The electrode input end of device (U1B) and the dividing point of bleeder circuit connect, and described bleeder circuit one end connects internal electric source, the other end
Ground connection；The output end of first voltage comparator (U1B) keeps signal for exporting, and is transferred to by the second diode (D12)
The input terminal for inputting normal signal of the driving output circuit.
Optionally, the driving output circuit includes：9th resistance (R20), the tenth resistance (R21), the first capacitance (C5),
Second capacitance (C1), third diode (D10), second voltage comparator (U1C), the first triode (Q8)；The second voltage
The negative input of comparator (U1C) is used for inputting normal signal, the electrode input end of the second voltage comparator (U1C)
In input stop signal；The negative input of the second voltage comparator (U1C) and one end of the 9th resistance (R20), first
One end of capacitance (C5) and the anode connection of third diode (D10), the other end connection of the 9th resistance (R20) are internal
Power supply, the other end ground connection of first capacitance (C5), the cathode of the third diode (D10) is for inputting normal signal；
The electrode input end of the second voltage comparator (U1C) and one end of the tenth resistance (R21), the second capacitance (C1) one end,
The cathode connection of the anode and the 5th diode (D14) of 4th diode (D4), the other end of the tenth resistance (R21)
Internal electric source is connected, the other end of second capacitance (C1) is grounded, and the plus earth of the 5th diode (D14) is described
The cathode of 4th diode (D4) is for inputting abnormal signal；The output end connection first of the second voltage comparator (U1C)
All the way, the another way of the ground level of first triode (Q8) is by resistance eutral grounding for the ground level of triode (Q8), and described first
The emitter of triode (Q8) is grounded, and the collector of first triode (Q8) is directly connected to one end of the coil all the way,
Another way connects the other end of the coil by diode.
Optionally, further include：Delay circuit, the input terminal of the delay circuit are connect with the abnormal detection circuit, institute
The output end for stating delay circuit is connect with the input terminal for inputting stop signal of the driving output circuit.
Optionally, the abnormal detection circuit includes moist detection circuit, and the humidity detection circuit includes：It is arranged defeated
Conduct piece near outlet；Second photoelectrical coupler (U3)；The input terminal passes through the second photoelectrical coupler described in capacitance connection
(U3) one end of luminous tube；The conduct piece connects second photoelectrical coupler (U3) by current-limiting resistance (R30, R31)
Luminous tube the other end；The output end of second photoelectrical coupler (U3) is connect with the delay circuit.
Optionally, further include：First current transformer (L1) and the first rectifier bridge (D5)；First current transformer (L1)
First winding is connected in the major loop of output end, and secondary winding is connected with the input terminal of the first rectifier bridge (D5)；The exception
Detection circuit included current circuit, and the current circuit of crossing includes：Eleventh resistor (R22), the 6th diode (D11), third electricity
Hold (C11), the 7th diode (D3), twelfth resistor (R26) and the second triode (Q7)；The anode of first rectifier bridge (D5) is defeated
Outlet is connect with the anode of one end of eleventh resistor (R22), the 6th diode (D11), and first rectifier bridge (D5) is born
Pole output end ground connection, the other end ground connection of the eleventh resistor (R22)；The anode of the third capacitance (C11) and described the
The cathode connection of the cathode of six diodes (D11), the 7th diode (D3), the cathode ground connection of the third capacitance (C11)；It is described
The anode of 7th diode (D3) connects the ground level of the second triode (Q7) all the way by resistance；Second triode (Q7)
Ground level another way pass through resistance eutral grounding, second triode (Q7) emitter ground connection, second triode (Q7)
Collector connect with the delay circuit.
Optionally, the abnormal detection circuit includes leakage circuit, and the leakage circuit includes：Second current transformer
(L2), the second rectifier bridge (D16) and tertiary voltage comparator (U1A)；The first winding of second current transformer (L1) is connected on
In the major loop of output end, secondary winding is connected with the input terminal of the first rectifier bridge (D5)；The cathode of second rectifier bridge (D16) is defeated
Outlet is grounded；The cathode output end of second rectifier bridge (D16) passes through the negative of resistance connection tertiary voltage comparator (U1A) all the way
Pole input terminal, another way pass through capacity earth；The output of the electrode input end connection bleeder circuit of tertiary voltage comparator (U1A)
End；The output end of tertiary voltage comparator (U1A) is connect by diode with the delay circuit.
Optionally, the delay circuit includes：4th voltage comparator (U1D)；4th voltage comparator (U1D)
Electrode input end is connect with the abnormal detection circuit, also with one end of the 14th resistance (R18), the anode of the 4th capacitance (C7)
The other end of connection, the 14th resistance (R18) connects internal electric source, the cathode ground connection of the 4th capacitance (C7)；It is described
The cathode of the negative input of 4th voltage comparator (U1D) and one end of the 15th resistance (R15), the 9th diode (D22)
The other end of connection, the 15th resistance (R15) connects internal electric source, the plus earth of the 9th diode (D22)；Institute
The output end for stating the 4th voltage comparator (U1D) connects the input terminal for inputting stop signal of the driving output circuit.
Optionally, further include：Switching Power Supply, the input terminal of the Switching Power Supply connect the input terminal of the interleaving plate, institute
The output end for stating Switching Power Supply provides the internal electric source.
Technical solution provided by the present application can include the following benefits：
By the way that normal detection circuit, abnormal detection circuit and driving output circuit is arranged, driving output circuit is used for
Electric signal is exported to coil after receiving normal signal, and is kept after not receiving normal signal or receiving stop signal
Output open circuit, coil are used for two normally opened contacts of triggering after the electric signal for receiving driving output circuit output and are closed, and
Two normally opened contacts are kept to disconnect after not receiving the electric signal of driving output circuit output, so as to so that circuit is different in generation
When reason condition, such as under electric leakage, moisture conditions, contact is kept to disconnect, cut-out input and output path so that interleaving plate stops normal
Work reduces the possibility got an electric shock when use, therefore can improve safety.
It should be understood that above general description and following detailed description is only exemplary and explanatory, not
The application can be limited.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and the principle together with specification for explaining the application.
Fig. 1 is the module diagram for the safety power strip plate that the application one embodiment provides；
Fig. 2 is the load detecting start-up circuit for the safety power strip plate that the application one embodiment provides and moist detection
The schematic diagram of circuit；
Fig. 3 is the schematic diagram of the load detecting holding circuit for the safety power strip plate that the application one embodiment provides；
Fig. 4 is the schematic diagram of the driving output circuit for the safety power strip plate that the application one embodiment provides；
Fig. 5 is the schematic diagram for crossing current circuit for the safety power strip plate that the application one embodiment provides；
Fig. 6 is the schematic diagram of the leakage circuit for the safety power strip plate that the application one embodiment provides；
Fig. 7 is the schematic diagram of the delay circuit for the safety power strip plate that the application one embodiment provides；
Fig. 8 is the schematic diagram of the switching power circuit for the safety power strip plate that the application one embodiment provides；
Fig. 9 is the integrated circuit schematic diagram of the safety power strip plate of the application another embodiment offer.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of consistent device and method of some aspects be described in detail in claims, the application.
Fig. 1 is the module diagram for the safety power strip plate that the application one embodiment provides.Referring to Fig.1, the safety
Electric power plug socket plate includes：
Input terminal 11, output end 12, relay 13, driving output circuit 14, normal detection circuit 15, abnormal detection circuit
16；
Relay 13 includes two normally opened contacts and coil；
Two normally opened contacts are separately connected input terminal and output end；
The output end of output circuit 14 is driven to connect coil；
It includes two input terminals to drive output circuit 14, is respectively used to input normal signal and stop signal；
Normal detection circuit 15 is connect with the input terminal for inputting normal signal of driving output circuit 14, for generating
Normal signal, and normal signal is sent to driving output circuit 14；
Abnormal detection circuit 16 is connect with the input terminal for inputting stop signal of driving output circuit 14, for generating
Stop signal, and stop signal is sent to driving output circuit 14；
Driving output circuit 14 is not receiving normally for exporting electric signal after receiving normal signal to coil
Signal receives holding output open circuit after stop signal；
Coil is used for two normally opened contacts of triggering after the electric signal for receiving driving output circuit output and is closed, and not
Two normally opened contacts are kept to disconnect after receiving the electric signal of driving output circuit output.
Above-mentioned input terminal is used to provide power supply, such as the alternating current of input 220V to electric power plug socket plate；Above-mentioned output end is used
In slotting charging plug；Above-mentioned relay control signal is connected into circuit with output end；Above-mentioned normal detection circuit detection circuit is just
In the case of often, generates normal signal and be sent to driving output circuit；The electric leakage of above-mentioned abnormal detection circuit detection circuit or into
In the case of water, generates stop signal and be sent to driving output circuit；Above-mentioned driving output circuit is when receiving normal signal
Electric signal is exported to coil, holding circuit off-state when not receiving normal signal or receiving stop signal.
In the present embodiment, by the way that normal detection circuit, abnormal detection circuit and driving output circuit, driving output is arranged
Circuit is not receiving normal signal or is receiving stopping for exporting electric signal after receiving normal signal to coil
Output open circuit, coil is kept to be used to trigger two normally opened contacts after the electric signal for receiving driving output circuit output after signal
It is closed, and keeps two normally opened contacts to disconnect after the electric signal for not receiving driving output circuit output, so as to so that electricity
Road keeps contact to disconnect when being abnormal situation, such as under electric leakage, moisture conditions, cut-out input and output path so that insert row
Plate stops normal work, reduces the possibility got an electric shock when use, therefore can improve safety.
In some embodiments, input terminal includes first input end (J7) and the second input terminal (J8), and output end includes first
Output end (J1J2) and second output terminal (J3J4), normal signal are enabling signal, and normal detection circuit 4 is opened including load detecting
Dynamic circuit 6.
Referring to Fig. 2, load detecting start-up circuit 6 includes：
NPN type triode (Q2), PNP type triode (Q1), the first photoelectrical coupler (U2)；
The emitting stage of NPN type triode connects first input end, and the ground level of NPN type triode passes through first resistor all the way
(R1) first input end is connected, the another way of the ground level of NPN type triode is connected by second resistance (R2) and 3rd resistor (R3)
Connect the first output end；
The emitting stage of PNP type triode connects the second input terminal, and the ground level of PNP type triode passes through the 7th resistance all the way
(R7) the second input terminal is connected, the another way of the ground level of PNP type triode is connected by the 4th resistance (R4) and the 5th resistance (R5)
Connect second output terminal；
The current collection grade of PNP type triode connects the first photoelectrical coupler by the first diode (D1) and the 6th resistance (R6)
(U2) one end of luminous tube, the current collection grade of NPN type triode connect the other end of the luminous tube of the first photoelectrical coupler (U2)；
The output end of first photoelectrical coupler (U2) is transferred to being used for for driving output circuit for exporting enabling signal
Input the input terminal of normal signal.
J1J2, J3J4 are output ends, and J7J8 is 220V input terminals.The connection or disconnection of input terminal and output end are by relay
The connection of device contact disconnects control, and when contact disconnects, the transmission path of input terminal and output end is to disconnect, when contact connects
When logical, input terminal is connected to the transmission path of output end.The emitter of Q1Q2 also accesses 220V.Two one, triodes
The ground level of another NPN of PNP, two triodes are connected to output end by two current-limiting resistances (R2 and R3 or R4 and R5).Do not having
Q1Q2 is not turned on when loaded；When output end wherein has one end to have input, i.e., when input is phase line, for example contacted with hand
Metal touches output end, and only there are one triode ON, another triode is not turned at high-impedance state, the collection of two triodes
Electrode does not have electric current to flow through, relay not inhale and, it is assumed that two current-limiting resistances (such as R2 and R3) are 1M Ω, then flow through human body
Electric current it is minimum (<110UA), it can be ignored, human body will not be damaged, so also may be used when people accidentally touches output end
To ensure safety.When J1J2, J3J4, which are output ends, load, Q1Q2 is simultaneously turned on, collector by D1R6 current-limiting resistances to
Photoelectrical coupler U2 conveys pulse, starts subsequent circuit, and relay is attracted, and input, output end are closed, to loading normal supply
Electricity.High-impedance state is presented in Q1Q2 basis sets and emitter short circuit, Q1Q2 after circuit start, and circuit is not turned on.Complete one-shot.
Above-mentioned NPN type triode is that the triode among two pieces of N-type semiconductors is arranged in one piece of P-type semiconductor；Positive-negative-positive three
The triode among two pieces of P-type semiconductors is arranged for one piece of N-type semiconductor in pole pipe.
Photoelectrical coupler is a kind of electrical-optical-electrical switching device using light as media transmission electric signal.It by light emitting source and by
Light device two parts form.Light emitting source and light-receiving device are assembled in same closed shell, are isolated to each other with transparent insulator.
The pin of light emitting source is input terminal, and the pin of light-receiving device is output end, and common light emitting source is light emitting diode, and light-receiving device is light
Quick diode, phototriode etc..
By load detecting start-up circuit in the present embodiment, circuit is set to detect under normal circumstances, normal operation.
In some embodiments, normal signal is holding signal, and interleaving plate further includes：First current transformer (L1) and first
Rectifier bridge (D5)；
The first winding of first current transformer (L1) is connected in the circuit of output end, secondary winding and the first rectifier bridge
(D5) input terminal series connection；
Normal detection circuit 4 includes load detecting holding circuit 7, and with reference to Fig. 3, load detecting holding circuit includes：
First voltage comparator (U1B) and the second diode (D12)；
The cathode output end of first rectifier bridge (D5) is connect with the negative input of first voltage comparator (U1B), and first
The cathode output end of rectifier bridge (D5) is grounded；
The electrode input end of first voltage comparator (U1B) and the dividing point of bleeder circuit connect, and bleeder circuit one end connects
Connect internal electric source, other end ground connection；
The output end of first voltage comparator (U1B) keeps signal for exporting, and is transmitted by the second diode (D12)
To the input terminal for inputting normal signal of driving output circuit.
Voltage comparator is to be differentiated circuit compared with to input signal, is the base for forming non-sine wave generation circuit
This element circuit.
Load detecting holding circuit is made of current transformer L1, voltage comparator U1B, R14, D9, rectifier bridge D5.It is negative
After carrying detection start-up circuit startup, current transformer L1 has electric current to flow through output end, and output end exports corresponding alternating voltage,
Direct current force feed is exported after rectifier bridge D5 rectifications to voltage comparator U1B6 feet, and 6 foot voltages and 5 foot voltages are compared
Compared with when 6 foot voltages are more than 5 foot voltage, U1B7 feet export low level, and subsequent circuit is made to work, and relay keeps being attracted, and makes
220V input/output terminals, which are closed, to be kept stablizing output.
Current transformer is that primary side high current is converted into secondary side low current to measure electricity according to electromagnetic induction principle
The instrument of stream.Rectifying tube is exactly enclosed in a shell by rectifier bridge, and within each work period of rectifier bridge, the same time only has
Two diodes work, and by the one-way conduction function of diode, alternating current are converted into unidirectional DC pulse moving voltage.
In the present embodiment, by load detecting holding circuit, electric signal output is kept, electric power plug socket plate is made to be in normal work
Make state.
With reference to Fig. 4, in some embodiments, driving output circuit 3 includes：
9th resistance (R20), the tenth resistance (R21), the first capacitance (C5), the second capacitance (C1), third diode
(D10), second voltage comparator (U1C), the first triode (Q8)；
The negative input of second voltage comparator (U1C) is used to input normal signal, second voltage comparator (U1C)
Electrode input end is for inputting stop signal；
One end of the negative input of second voltage comparator (U1C) and the 9th resistance (R20), the first capacitance (C5) one
The anode connection of end and third diode (D10), the other end of the 9th resistance (R20) connect internal electric source, the first capacitance
(C5) other end ground connection, the cathode of third diode (D10) is for inputting normal signal；
One end of the electrode input end of second voltage comparator (U1C) and the tenth resistance (R21), the second capacitance (C1) one
The cathode connection at end, the anode of the 4th diode (D4) and the 5th diode (D14), the other end of the tenth resistance (R21) connect
Connect internal electric source, the other end ground connection of the second capacitance (C1), the plus earth of the 5th diode (D14), the 4th diode (D4)
Cathode for inputting abnormal signal；
The output end of second voltage comparator (U1C) connects the ground level of the first triode (Q8) all the way, the first triode
(Q8) another way of ground level is grounded by resistance eutral grounding, the emitter of the first triode (Q8), the collection of the first triode (Q8)
Electrode is directly connected to one end of coil all the way, and another way connects the other end of coil by diode.
Control signal mouth there are two driving in output circuit.Start and stop, stopping preferential.Level is not turned on to be added to
When U1C9 feet, U1C9 feet R20 charges to C5 close to 12V, while R21 charges to C1, and for charging voltage by D14 clampers, U1C10 feet are low
In 9 foot voltage outputs, 8 feet export low level, and Q8 basis sets are also low level, and driving circuit is not turned on, and relay is failure to actuate.When
When U1C9 feet have enabling signal, 10 foot voltages are higher than 9 foot voltages, and 8 feet are turned into high level, triode Q8 conductings, and relay is inhaled
It closes, 220V input/output terminals are closed normal output.
In the present embodiment, when there is electric leakage, moisture, overcurrent, overheat, detection circuit output is low level, low
Level is connected to 10 feet, and 10 foot voltages are pulled low to rapidly less than 9 foot voltages, and output pin is at low level, and Q8 also stops being connected, relay
It disconnects, 220V output ends also stop exporting.
In some embodiments, further include：The input terminal of delay circuit 8, delay circuit 8 is connect with abnormal detection circuit 5, is prolonged
When circuit 8 output end connect with the input terminal for inputting stop signal of driving output circuit 3.
The delay duration of delay circuit is determined by the value of R18C7.When there is electric leakage, moisture, overcurrent, overheat,
Detection circuit output is low level, and low level is connected to voltage comparator U1D12 feet, and 12 foot voltage instantaneous pull into low level, 14 feet
Also low level, 220V output end instant cut-offs are turned into from high level.
In the present embodiment, when there is moisture, overcurrent, electric leakage, circuit stops output, and R18 charges about 5 seconds to C7
Voltage could be charged to more than 13 foot voltages, circuit restores output.If moisture, overcurrent, any circuit operation output end of electric leakage
20 milliseconds are electrically energized, circuit can stop 5 seconds again.Until moisture, overcurrent, electric leakage do not detect that there is no problem and can just restore to supply
Electricity.
In some embodiments, abnormal detection circuit 5 includes moist detection circuit 7, and with reference to Fig. 2, moist detection circuit 7 is wrapped
It includes：The conduct piece being arranged near output end；
Second photoelectrical coupler (U3)；
One end that input terminal passes through the luminous tube of the second photoelectrical coupler of capacitance connection (U3)；
Conduct piece connects the other end of the luminous tube of the second photoelectrical coupler (U3) by current-limiting resistance (R30, R31)；The
The output end of two photoelectrical couplers (U3) is connect with delay circuit 8.
Above-mentioned conduct piece can be metal or stainless steel, and shape can be sheet or ring-type.
J1J2, J3J4 are output ends, and there are one moist detection rings for periphery.When have moisture enter output end and detection interannular,
Insulation resistance resistance becomes smaller, and electric current passes through R30 or R31 current-limiting resistances, lights the luminous tube of U3 photoelectrical couplers, three pole of output end
Pipe generates pulse output.Subsequent driving output circuit is driven to close by force, relay disconnects, and keeps 220V input/output terminals disconnected
It opens, cuts off the power supply of load.
In the present embodiment, by the way that moist detection circuit is arranged, in wet condition, there is moisture to enter output end and detection ring
Between when, make driving output circuit close, cut off the power supply of load, avoid interleaving plate water inlet break down.
In some embodiments, further include：First current transformer (L1) and the first rectifier bridge (D5)；First current transformer
(L1) first winding is connected in the major loop of output end, and secondary winding is connected with the input terminal of the first rectifier bridge (D5)；
With reference to Fig. 5, abnormal detection circuit included current circuit, crosses current circuit and includes：Eleventh resistor (R22), the six or two
Pole pipe (D11), third capacitance (C11), the 7th diode (D3), twelfth resistor (R26) and the second triode (Q7)；
The cathode output end of first rectifier bridge (D5) and one end of eleventh resistor (R22), the 6th diode (D11) are just
Pole connects, the cathode output end ground connection of the first rectifier bridge (D5), the other end ground connection of eleventh resistor (R22)；
The anode of third capacitance (C11) is connect with the cathode of the cathode of the 6th diode (D11), the 7th diode (D3),
The cathode of third capacitance (C11) is grounded；
The anode of 7th diode (D3) connects the ground level of the second triode (Q7) all the way by resistance；
The another way of the ground level of second triode (Q7) is grounded by resistance eutral grounding, the emitter of the second triode (Q7),
The collector of second triode (Q7) is connect with delay circuit.
After load detecting start-up circuit starts, current transformer L1 has electric current to flow through output end, and output end output is corresponding
Alternating voltage, after D5 rectifier bridge rectifications, output DC voltage is shunted to another way by D11R21, by electric current electricity at this time
Press size as predetermined threshold value.When the electric current of mutual inductor L1 is more than predetermined threshold value, C11 both end voltages also increase rapidly, are higher than
The voltage stabilizing value of voltage-stabiliser tube D3, electric current will pass through D3R26 to Q7 basis sets, and Q7 conductings is made to go control delay circuit output low level,
220V output ends are made to stop output.
In the present embodiment, by the way that current circuit was arranged, when electric current is excessively high in circuit, safety patch board plate is made to stop work in time
Make.
In some embodiments, abnormal detection circuit includes leakage circuit, and with reference to Fig. 6, leakage circuit includes：Second electric current is mutual
Sensor (L2), the second rectifier bridge (D16) and tertiary voltage comparator (U1A)；
The first winding of second current transformer (L1) is connected in the major loop of output end, secondary winding and the first rectification
The input terminal of bridge (D5) is connected；
The cathode output end of second rectifier bridge (D16) is grounded；The cathode output end of second rectifier bridge (D16) passes through all the way
Resistance connects the negative input of tertiary voltage comparator (U1A), and another way passes through capacity earth；
The output end of the electrode input end connection bleeder circuit of tertiary voltage comparator (U1A)；
The output end of tertiary voltage comparator (U1A) is connect by diode with delay circuit.
When the state that L2 leakage current transformers do not leak electricity, the current phase flowed through in L2 is cancelled out each other on the contrary, and L2 does not have
There is voltage output.Just have voltage output when there is electric leakage L2 occur, after D16 rectifications, U1A2 feet be sent to using R17,3 feet by
R9D20 bias 0.6V, when 2 feet are higher than 3 foot voltages, 1 foot output low-voltage removes control delay circuit, and delay circuit is after delay
Again power transmission again.
In the present embodiment, by the way that leakage circuit is arranged, when drain conditions occur for circuit, it is delayed and is sent out using delay circuit
Electricity avoids human electric shock.
With reference to Fig. 7, in some embodiments, delay circuit 8 includes：4th voltage comparator (U1D)；
The electrode input end of 4th voltage comparator (U1D) is connect with abnormal detection circuit 5, also with the 14th resistance
(R18) other end of the anode connection of one end, the 4th capacitance (C7), the 14th resistance (R18) connects internal electric source, the 4th electricity
Hold the cathode ground connection of (C7)；
The negative input of 4th voltage comparator (U1D) and one end, the 9th diode of the 15th resistance (R15)
(D22) cathode connection, the other end of the 15th resistance (R15) connect internal electric source, and the anode of the 9th diode (D22) connects
Ground；
The input for inputting stop signal of the output end connection driving output circuit 3 of 4th voltage comparator (U1D)
End.
Based on above-described embodiment, same or similar part, and will not be described here in detail.
In the present embodiment, by making the output end of the 4th voltage comparator stop letter with the input that is used for of driving output circuit
Number output end connection, occur need delay when, can quickly send stop signal to drive output circuit.
With reference to Fig. 8, in some embodiments, further include：Switching Power Supply 11, the input terminal connection interleaving plate of Switching Power Supply 11
The output end of input terminal 1, Switching Power Supply 11 provides internal electric source.
Switching Power Supply is no longer described in detail with reference to power supply in the prior art herein.
Description based on each part mentioned above gives an overall diagram of safety power strip plate referring to Fig. 9.Each portion
The explanation divided may refer to above-mentioned associated description, and this will not be detailed here.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to same or analogous content in other embodiment.
It should be noted that in the description of the present application, term " first ", " second " etc. are used for description purposes only, without
It can be interpreted as indicating or implying relative importance.In addition, in the description of the present application, unless otherwise indicated, the meaning of " multiple "
Refer at least two.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the application includes other realization, wherein can not press shown or discuss suitable
Sequence, include according to involved function by it is basic simultaneously in the way of or in the opposite order, to execute function, this should be by the application
Embodiment person of ordinary skill in the field understood.
It should be appreciated that each section of the application can be realized with hardware, software, firmware or combination thereof.Above-mentioned
In embodiment, software that multiple steps or method can in memory and by suitable instruction execution system be executed with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit application-specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiments or example in can be combined in any suitable manner.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of safety power strip plate, which is characterized in that including：
Input, output end, relay, driving output circuit, normal detection circuit, abnormal detection circuit；
The relay includes two normally opened contacts and coil；
Described two normally opened contacts are separately connected input terminal and output end；
The output end of the driving output circuit connects the coil；
The driving output circuit includes two input terminals, is respectively used to input normal signal and stop signal；
The normal detection circuit is connect with the input terminal for inputting normal signal of the driving output circuit, for generating
Normal signal, and normal signal is sent to the driving output circuit；
The abnormal detection circuit is connect with the input terminal for inputting stop signal of the driving output circuit, for generating
Stop signal, and stop signal is sent to the driving output circuit；
The driving output circuit is not receiving just for exporting electric signal after receiving normal signal to the coil
Regular signal receives holding output open circuit after stop signal；
The coil is used to trigger described two normally opened contacts after the electric signal for receiving the driving output circuit output and close
It closes, and keeps described two normally opened contacts to disconnect after the electric signal for not receiving the driving output circuit output.
2. interleaving plate according to claim 1, which is characterized in that the input terminal includes first input end and the second input
End, the output end include the first output end and second output terminal, and the normal signal is enabling signal, the normal detection electricity
Road includes load detecting start-up circuit, and the load detecting start-up circuit includes：
NPN type triode, PNP type triode, the first photoelectrical coupler (U2)；
The emitting stage of NPN type triode connects first input end, and the ground level of NPN type triode passes through first resistor (R1) all the way
Connect first input end, the another way of the ground level of NPN type triode connects the by second resistance (R2) and 3rd resistor (R3)
One output end；
The emitting stage of PNP type triode connects the second input terminal, and the ground level of PNP type triode passes through the 7th resistance (R7) all the way
Connect the second input terminal, the another way of the ground level of PNP type triode passes through the 4th resistance (R4) and the connection of the 5th resistance (R5) the
Two output ends；
The current collection grade of PNP type triode connects the first photoelectrical coupler (U2) by the first diode (D1) and the 6th resistance (R6)
Luminous tube one end, the current collection grade of NPN type triode connects the other end of the luminous tube of the first photoelectrical coupler (U2)；
The output end of first photoelectrical coupler (U2) is transferred to being used for for the driving output circuit for exporting enabling signal
Input the input terminal of normal signal.
3. interleaving plate according to claim 1, which is characterized in that the normal signal is to keep signal, the interleaving plate
Further include：
First current transformer (L1) and the first rectifier bridge (D5)；
The first winding of first current transformer (L1) is connected in the circuit of output end, secondary winding and the first rectifier bridge (D5)
Input terminal series connection；
The normal detection circuit includes load detecting holding circuit, and the load detecting holding circuit includes：
First voltage comparator (U1B) and the second diode (D12)；
The cathode output end of first rectifier bridge (D5) is connect with the negative input of first voltage comparator (U1B), the first rectification
The cathode output end of bridge (D5) is grounded；
The electrode input end of first voltage comparator (U1B) and the dividing point of bleeder circuit connect, and described bleeder circuit one end connects
Connect internal electric source, other end ground connection；
The output end of first voltage comparator (U1B) keeps signal for exporting, and is transferred to institute by the second diode (D12)
State the input terminal for inputting normal signal of driving output circuit.
4. interleaving plate according to claim 1, which is characterized in that the driving output circuit includes：
9th resistance (R20), the tenth resistance (R21), the first capacitance (C5), the second capacitance (C1), third diode (D10),
Two voltage comparators (U1C), the first triode (Q8)；
The negative input of the second voltage comparator (U1C) is for inputting normal signal, the second voltage comparator
(U1C) electrode input end is for inputting stop signal；
The negative input of the second voltage comparator (U1C) and one end of the 9th resistance (R20), the first capacitance (C5) one
The anode connection of end and third diode (D10), the other end of the 9th resistance (R20) connect internal electric source, and described the
The other end of one capacitance (C5) is grounded, and the cathode of the third diode (D10) is for inputting normal signal；
The electrode input end of the second voltage comparator (U1C) and one end of the tenth resistance (R21), the second capacitance (C1) one
The cathode connection at end, the anode of the 4th diode (D4) and the 5th diode (D14), the tenth resistance (R21) it is another
End connection internal electric source, the other end ground connection of second capacitance (C1), the plus earth of the 5th diode (D14), institute
The cathode of the 4th diode (D4) is stated for inputting abnormal signal；
The output end of the second voltage comparator (U1C) connects the ground level of the first triode (Q8) all the way, and the described 1st
The another way of the ground level of pole pipe (Q8) is grounded by resistance eutral grounding, the emitter of first triode (Q8), and the described 1st
The collector of pole pipe (Q8) is directly connected to one end of the coil all the way, and another way connects the another of the coil by diode
End.
5. interleaving plate according to claim 1, which is characterized in that further include：
Delay circuit, the input terminal of the delay circuit are connect with the abnormal detection circuit, the output end of the delay circuit
It is connect with the input terminal for inputting stop signal of the driving output circuit.
6. interleaving plate according to claim 5, which is characterized in that the abnormal detection circuit includes moist detection circuit,
It is described humidity detection circuit include：
The conduct piece being arranged near output end；
Second photoelectrical coupler (U3)；
One end that the input terminal passes through the luminous tube of the second photoelectrical coupler (U3) described in capacitance connection；
The conduct piece connects the another of the luminous tube of second photoelectrical coupler (U3) by current-limiting resistance (R30, R31)
End；The output end of second photoelectrical coupler (U3) is connect with the delay circuit.
7. interleaving plate according to claim 5, which is characterized in that further include：
First current transformer (L1) and the first rectifier bridge (D5)；
The first winding of first current transformer (L1) is connected in the major loop of output end, secondary winding and the first rectifier bridge
(D5) input terminal series connection；
The abnormal detection circuit included current circuit, and the current circuit of crossing includes：
Eleventh resistor (R22), the 6th diode (D11), third capacitance (C11), the 7th diode (D3), twelfth resistor
(R26) and the second triode (Q7)；
The cathode output end of first rectifier bridge (D5) and the anode of one end of eleventh resistor (R22), the 6th diode (D11) connect
It connects, the cathode output end ground connection of first rectifier bridge (D5), the other end ground connection of the eleventh resistor (R22)；
The anode of the third capacitance (C11) and the cathode of the cathode of the 6th diode (D11), the 7th diode (D3) connect
It connects, the cathode ground connection of the third capacitance (C11)；
The anode of 7th diode (D3) connects the ground level of the second triode (Q7) all the way by resistance；
The another way of the ground level of second triode (Q7) is connect by resistance eutral grounding, the emitter of second triode (Q7)
The collector on ground, second triode (Q7) is connect with the delay circuit.
8. interleaving plate according to claim 5, which is characterized in that the abnormal detection circuit includes leakage circuit, described
Leakage circuit includes：
Second current transformer (L2), the second rectifier bridge (D16) and tertiary voltage comparator (U1A)；
The first winding of second current transformer (L1) is connected in the major loop of output end, secondary winding and the first rectifier bridge
(D5) input terminal series connection；
The cathode output end of second rectifier bridge (D16) is grounded；
The cathode for passing through resistance connection tertiary voltage comparator (U1A) all the way of the cathode output end of second rectifier bridge (D16) is defeated
Enter end, another way passes through capacity earth；
The output end of the electrode input end connection bleeder circuit of tertiary voltage comparator (U1A)；
The output end of tertiary voltage comparator (U1A) is connect by diode with the delay circuit.
9. interleaving plate according to claim 5, which is characterized in that the delay circuit includes：
4th voltage comparator (U1D)；
The electrode input end of 4th voltage comparator (U1D) is connect with the abnormal detection circuit, also with the 14th resistance
(R18) the anode connection of one end, the 4th capacitance (C7), the other end of the 14th resistance (R18) connect internal electric source, institute
State the cathode ground connection of the 4th capacitance (C7)；
The negative input of 4th voltage comparator (U1D) and one end, the 9th diode of the 15th resistance (R15)
(D22) cathode connection, the other end of the 15th resistance (R15) connect internal electric source, the 9th diode (D22)
Plus earth；
The output end of 4th voltage comparator (U1D) connect the driving output circuit for inputting the defeated of stop signal
Enter end.
10. according to the interleaving plate described in claim 3,4,9, which is characterized in that further include：
Switching Power Supply, the input terminal of the Switching Power Supply connect the input terminal of the interleaving plate, the output end of the Switching Power Supply
The internal electric source is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810442236.9A CN108649399B (en) | 2018-05-10 | 2018-05-10 | Safety power strip plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810442236.9A CN108649399B (en) | 2018-05-10 | 2018-05-10 | Safety power strip plate |
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| Publication Number | Publication Date |
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| CN108649399A true CN108649399A (en) | 2018-10-12 |
| CN108649399B CN108649399B (en) | 2019-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810442236.9A Active CN108649399B (en) | 2018-05-10 | 2018-05-10 | Safety power strip plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888575A (en) * | 2019-03-05 | 2019-06-14 | 王佳旭 | Electric socket |
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| US20160056589A1 (en) * | 2013-03-29 | 2016-02-25 | Panasonic Intellectual Property Management Co., Ltd. | Connector for electrical connection |
| CN105428923A (en) * | 2015-11-17 | 2016-03-23 | 中国计量学院 | Intelligent patch board |
| CN206931986U (en) * | 2017-04-28 | 2018-01-26 | 中国石油大学(华东) | A kind of Portable earth leakage protective with mounting structure |
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|---|---|---|---|---|
| CN201503966U (en) * | 2009-08-24 | 2010-06-09 | 许智华 | Power socket with safety circuit |
| US20160056589A1 (en) * | 2013-03-29 | 2016-02-25 | Panasonic Intellectual Property Management Co., Ltd. | Connector for electrical connection |
| CN204992555U (en) * | 2015-05-14 | 2016-01-20 | 广州市纬志电子科技有限公司 | Hot drawing picture peg card power protection circuit |
| CN105428923A (en) * | 2015-11-17 | 2016-03-23 | 中国计量学院 | Intelligent patch board |
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