CN208241303U - Three pole on-off leakage protecting plug of intelligent control type - Google Patents
Three pole on-off leakage protecting plug of intelligent control type Download PDFInfo
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- CN208241303U CN208241303U CN201820478921.2U CN201820478921U CN208241303U CN 208241303 U CN208241303 U CN 208241303U CN 201820478921 U CN201820478921 U CN 201820478921U CN 208241303 U CN208241303 U CN 208241303U
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 63
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 10
- 230000006837 decompression Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 description 18
- 230000006698 induction Effects 0.000 description 13
- 238000012360 testing method Methods 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 2
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- 102100040826 Photoreceptor disk component PRCD Human genes 0.000 description 1
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- 238000001514 detection method Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model relates to a kind of three pole on-off leakage protecting plugs of intelligent control type, including rectification circuit and leakage protection circuit；Feature be further include D.C. regulated power supply, single chip machine controlling circuit and relay switching circuit；Single chip machine controlling circuit includes control chip and storaging chip, and control chip is electrically connected with storaging chip, and the output end of leakage protection circuit is electrically connected with the input terminal of control chip；Relay switching circuit includes the relay and driving switch circuit of three groups of normally opened contacts of band, and three groups of normally opened contacts of relay are connected on respectively on firewire L, zero curve N and ground wire E, and the input terminal of driving switch circuit is electrically connected with the output end of control chip.Its advantage are as follows: leak current fault such as occur and meet with single-phase power failure again, power supply all can be cut off immediately, after circuit restores electricity, as long as no leak current fault, original reset working condition will be automatically restored to, can satisfy national standard.
Description
Technical field
The utility model relates to a kind of three pole on-off leakage protecting plugs of intelligent control type.
Background technique
Common leakage protecting plug (PRCD) is typically all to cooperate monitoring circuit to control zero curve with mechanical release device
N, the three pole on/offs of firewire L and ground connection E, because being all residual current acting type trip gear, so there is electric leakage event
When barrier, if the power-off that would not thread off is protected in leakage without shock current;So in the case where resetting working condition, once there is electric leakage event
Hinder and no electric shock tripping power-off before, and meet with it is single-phase power failure as use the single-phase power-off of switch socket situation, leakage guarantor
Control circuit will because lose the job power supply without thread off trip, i.e., cannot cut off three pole power supplys immediately, thus there is also
Some potential safety problems；Currently, have one kind in the case where resetting working condition, once occur leak current fault meet with again it is single-phase have a power failure or
Using the situation of the single-phase power-off of switch socket, the leakage protecting plug that can be cut off the power, but its it is impossible to meet low-voltages
The national standard of work, quiescent dissipation is too big, too complicated etc. many defects of circuit.
Summary of the invention
A kind of safer intelligent control type three is provided the purpose of the utility model is to overcome the deficiencies in the prior art
Pole on-off leakage protecting plug, the leakage are protected in the case where resetting working condition, leak current fault such as occur and meet with single-phase power failure or use again
The situation of the single-phase power-off of switch socket can be stood and all cut off three pole power supplys of firewire, zero curve and ground connection, and circuit restores to supply
After electricity, as long as no leak current fault, original reset working condition will be automatically restored to, can satisfy national standard, moreover it is possible to
Enough meet the national standard to work under low-voltage AC50V state.
It in order to achieve the above object, the utility model is realized in this way, is a kind of three pole on-off of intelligent control type leakage
Electric protection plug, including rectification circuit and leakage protection circuit；The input terminal of the rectification circuit is electrically connected with city's alternating current, whole
The output end of current circuit provides working power for leakage protection circuit；Characterized by further comprising D.C. regulated power supplies, single-chip microcontroller
Control circuit and relay switching circuit, the output end of rectification circuit are electrically connected with the input terminal of D.C. regulated power supply；The list
Piece machine control circuit includes control chip and storaging chip, and reset switch is equipped on the control chip, controls chip and deposits
Chip electrical connection is store, the control chip can transfer the signal of storaging chip storage, the output end of the leakage protection circuit
It is electrically connected with the input terminal of control chip；The relay switching circuit includes that the relay of three groups of normally opened contacts of band and driving are opened
Powered-down road, one end of the relay are electrically connected to obtain DC supply, relay with the output end of D.C. regulated power supply
The other end of device is electrically connected with the output end of driving switch circuit, and three groups of normally opened contacts of relay are connected on firewire L, zero respectively
On line N and ground wire E, the input terminal of the driving switch circuit is electrically connected with the output end of control chip；The DC voltage-stabilizing electricity
The output end in source provides DC supply for control chip and storaging chip.
In the technical scheme, the D.C. regulated power supply includes the first D.C. regulated power supply and the second DC voltage-stabilizing electricity
Source；The input terminal of first D.C. regulated power supply receives the rectified voltage of rectification circuit output and carries out pressure stabilizing output, described
Second D.C. regulated power supply receives the DC voltage of the first D.C. regulated power supply output and carries out decompression and pressure stabilizing；Described first is straight
The output end of stream regulated power supply is electrically connected to obtain DC supply with one end of relay；The second DC voltage-stabilizing electricity
Source provides DC supply for control chip and storaging chip.
In the technical scheme, first D.C. regulated power supply includes field-effect tube, the second zener diode, the second electricity
Appearance and first resistor；The output end of the rectification circuit is electrically connected with one end of the drain electrode of field-effect tube and first resistor respectively,
The other end of first resistor is electrically connected with the cathode of the grid of field-effect tube and the second zener diode respectively, two pole of the second pressure stabilizing
The plus earth of pipe, one end of the second capacitor are electrically connected with the source electrode of field-effect tube, the other end ground connection, the source electrode of field-effect tube with
One end electrical connection of relay is to obtain DC supply；Second D.C. regulated power supply includes two pole of the first pressure stabilizing
Pipe, third capacitor and second resistance；First zener diode and third capacitor are parallel with one another, and the anode of the first zener diode connects
The cathode on ground, the first zener diode is electrically connected by second resistance with the source electrode of field-effect tube, the yin of the first zener diode
The extremely output end of the second D.C. regulated power supply.
It in the technical scheme, further include a diode, the both ends of this diode are attempted by the both ends of relay
And the cathode of diode is electrically connected with the output end of the first D.C. regulated power supply；The driving switch circuit includes switching transistor
And the 5th capacitor, the base stage of the switching transistor are electrically connected by the 7th resistance with the output end of control chip, three pole of switch
The collector of pipe is electrically connected with the other end of relay, the emitter ground connection of switching transistor；5th capacitor is attempted by out
Between the base stage and emitter for closing triode.
In the technical scheme, the model of the control chip is SN8P2711, shares 14 pins；The storaging chip
Model be AT24C02, share 8 pins；The both ends of the reset switch are electrically connected with 2 feet of control chip and 14 feet respectively
It connects, between 12 feet and 14 feet of control chip and is connected to the 6th capacitor, 12 feet for controlling chip are leak current fault signal IΔnIt is defeated
Enter end, 10 feet for controlling chip are drive outputs, and 8 feet for controlling chip are water-flow signal input terminals, and GL is water flow perceptron
Connector socket, the 6th resistance is electrically connected with the output end of the second D.C. regulated power supply, provides DC operation for water flow perceptron
Power supply, 4 feet for controlling chip are electrically connected by the 5th resistance with the output end of the second D.C. regulated power supply, and 3 feet of chip are controlled
It is electrically connected by the 4th resistance with the output end of the second D.C. regulated power supply, controls 1 foot and the second D.C. regulated power supply of chip
Output end electrical connection；8 feet of storaging chip are electrically connected with 1 foot of control chip, 6 feet of storaging chip and the 3 of control chip
5 feet of foot electrical connection, storaging chip are electrically connected with 4 feet of control chip, and 1 to 4 foot and 7 feet of storaging chip are grounded, and the 4th
The both ends of capacitor are electrically connected with 4 feet of storaging chip and 7 feet respectively.
The utility model compared with prior art the advantages of are as follows: in the case where resetting working condition, such as there is leak current fault and meet with again
The situation of single-phase power failure or the single-phase power-off using switch socket is met, it can be immediately by three pole power supplys of firewire, zero curve and ground connection
All cuttings, after circuit restores electricity, as long as no leak current fault, will automatically restore to original reset working condition, energy
Enough meet national standard, additionally it is possible to meet the national standard to work under low-voltage AC50V state；In addition, it is disconnected to also add water outlet
The function of electricity will be automatically cut off the power at once as long as water flow switch senses the flowing of water, after water flow stops, and it is automatic extensive
Multiple power supply, use are more convenient and safe.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, as long as technical characteristic involved in the various embodiments of the present invention described below does not constitute punching each other
It is prominent to be combined with each other.
Term " first " to " the 11st " is used for description purposes only in the description of the present invention, and should not be understood as
Indication or suggestion relative importance.
As shown in Figure 1, it is a kind of three pole on-off leakage protecting plug of intelligent control type, including rectification circuit 1, direct current are steady
Voltage source, single chip machine controlling circuit 3, relay switching circuit 4 and leakage protection circuit 5；Wherein, the rectification circuit 1 is defeated
The electrical connection of the city Ru Duanyu alternating current, the output end of rectification circuit 1 are that leakage protection circuit 5 provides working power, rectification circuit 1
Output end is electrically connected with the input terminal of D.C. regulated power supply；The single chip machine controlling circuit 3 includes control chip IC 2 and storage core
Piece IC3, is equipped with reset switch RESET in the control chip IC 2, and control chip IC 2 and storaging chip IC3 pass through data line
Electrical connection, it is described control chip IC 2 can transfer storaging chip IC3 storage signal, the output end of the leakage protection circuit 5 with
Control the input terminal electrical connection of chip IC 2；The relay switching circuit 4 includes the relay JK and drive of three groups of normally opened contacts of band
Dynamic switching circuit, one end of the relay JK are electrically connected to obtain DC operation electricity with the output end of D.C. regulated power supply
The other end in source, relay JK is electrically connected with the output end of driving switch circuit, and such driving switch circuit can also obtain directly
Flow working power；Three groups of normally opened contacts of relay JK are connected on respectively on firewire L, zero curve N and ground wire E, the driving switch
The input terminal of circuit is electrically connected with the output end of control chip IC 2；The output end of the D.C. regulated power supply is control chip IC 2
And storaging chip IC3 provides DC supply.When work, when leakage protection circuit 5 has electric leakage signal IΔnWhen output, control
The input terminal of chip IC 2 receives the signal I of the output of leakage protection circuit 5ΔnAfter handled, and will treated signal point
It Shu Chu not be disconnected to driving switch circuit and storaging chip IC3, driving switch circuit, relay JK power loss, three groups of normally opened contacts
Restore reset condition to disconnect, to cut off power supply, play the role of protecting personal safety, memory 8 is by single-chip microcontroller control
The signal that circuit 7 processed inputs is stored；After leak current fault excludes, D.C. regulated power supply is respectively single chip machine controlling circuit 3
And leakage protection circuit 5 provides direct-current working volts, presses reset switch RESET, controls 2 output signal of chip IC, driving is opened
The conducting of powered-down road, relay JK obtain electric, and three groups of normally opened contacts conductings restore electricity state, because of the work of relay and control circuit
Making power supply is provided by regulated power supply, and under low-voltage AC50V state, rectification circuit 1 and D.C. regulated power supply are still
Operating voltage can be provided, so that single chip machine controlling circuit 3, relay switching circuit 4 and leakage protection circuit 5 is worked as usual, institute
National standard has been fully met with the technical program.
In the present embodiment, the D.C. regulated power supply includes the first D.C. regulated power supply 21 and the second D.C. regulated power supply
22；The input terminal of first D.C. regulated power supply 21 receives the rectified signal that rectification circuit 1 exports and simultaneously carries out pressure stabilizing, and described the
Two D.C. regulated power supplies 22 receive the DC voltage of the first D.C. regulated power supply 21 output and carry out decompression and pressure stabilizing, and such second
The DC voltage that D.C. regulated power supply 22 exports is more stable；First D.C. regulated power supply 21 is relay JK and driving switch
Circuit provides DC supply；Second D.C. regulated power supply 22 provides direct current for control chip IC 2 and storaging chip IC3
Working power.
In the present embodiment, further include diode D2, the both ends of the diode D2 be attempted by the both ends of relay JK and
The cathode of diode D2 is electrically connected with the output end of the first D.C. regulated power supply 21, absorbs what relay coil generated for short circuit
Inverse peak voltage, protective switch triode Q2 and other elements not will receive the impact of inverse peak voltage；The driving switch circuit packet
Switching transistor Q2 and the 5th capacitor C5 is included, the base stage of the switching transistor Q2 passes through the 7th resistance R7 and control chip IC 2
Output end electrical connection, the collector of switching transistor Q2 is electrically connected with the other end of relay JK, the hair of switching transistor Q2
Emitter grounding；The 5th capacitor C5 is attempted by between the base stage and emitter of switching transistor Q2, for bypassing high-frequency electromagnetic
Interference signal.When work, when 12 feet of control chip IC 2 receive electric leakage signal IΔnWhen, control chip IC 2 exports immediately gives
The base stage low level signal of switching transistor Q2, switching transistor Q2 are disconnected, relay JK power loss, three groups of normally opened contacts disconnect from
And power supply is cut off and will not automatic recovery of power supply；After leak current fault excludes, reset switch RESET is pressed, controls chip IC 2
To switching transistor Q2 base stage export high level signal, switching transistor Q2 conducting, relay JK obtain it is electric, the three of relay JK
Group normally opened contact conducting continues as load supplying.
In the present embodiment, the model of the control chip IC 2 is SN8P2711, shares 14 pins；The storage core
The model of piece IC3 is AT24C02, shares 8 pins；The both ends of the reset switch RESET respectively with control chip IC 22
Foot and the electrical connection of 14 feet between 12 feet and 14 feet of control chip IC 2 and are connected to the 6th capacitor C6, are used for bypass absorption high frequency
12 feet of electromagnetic interference signal, control chip IC 2 are leak current fault signal IΔnInput terminal, 10 feet of control chip IC 2 are drivings
8 feet of output end, control chip IC 2 are water-flow signal input terminals, and GL is the connector socket of water flow perceptron, the 6th resistance R6 with
The output end of second D.C. regulated power supply 22 is electrically connected, and is provided DC supply for water flow perceptron, is controlled the 4 of chip IC 2
Foot is electrically connected by the 5th resistance R5 with the output end of the second D.C. regulated power supply 22, and 3 feet of control chip IC 2 pass through the 4th electricity
Resistance R4 is electrically connected with the output end of the second D.C. regulated power supply 22,1 foot and second D.C. regulated power supply 22 of control chip IC 2
Output end electrical connection；8 feet of storaging chip IC3 are electrically connected with 1 foot of control chip IC 2,6 feet of storaging chip IC3 and control
3 feet of chip IC 2 are electrically connected, and 5 feet of storaging chip IC3 are electrically connected with 4 feet of control chip IC 2, and the 1 to 4 of storaging chip IC3
Foot and 7 feet are grounded, and the both ends of the 4th capacitor C4 are electrically connected with 4 feet of storaging chip IC3 and 8 feet respectively, for bypassing high frequency
Interference signal, power conditioner.When work, reset switch RESET is pressed, controls 10 feet of chip IC 2 by low potential reversion and one
Straight to keep high potential, relay JK obtains electric, switching transistor Q2 conducting, and three groups of normally opened contact conductings provide exchange for load appliance
Power supply；In normal operation, if encounter power failure phenomenon, the first D.C. regulated power supply 21 and the second D.C. regulated power supply 22
Power loss, controls chip IC 2 and relay JK power loss, three groups of normally opened contacts disconnect immediately；When power is restored, as long as no electric leakage
Failure, the first D.C. regulated power supply 21 and the second D.C. regulated power supply 22 it is electric, relay JK obtain it is electric, control chip IC 2 immediately
The normal work signal of storage chip IC3 storage is received, 10 feet of control chip IC 2 are inverted by low potential and are always maintained at high electricity
Position, switching transistor Q2 conducting, three groups of normally opened contact automatic pick conductings are restored to powered operation state.In addition in normal power supply
Under state, when 8 feet of control chip IC 2 sense the stream impulse signal of water flow perceptron GL output, the 10 of control chip IC 2
Foot is reversed to low potential by high potential, and switching transistor Q2 is disconnected, and relay JK power loss, three groups of normally opened contacts disconnect stopping immediately
Power supply；After the stream impulse blackout of water flow perceptron GL, control chip IC 2 is delayed several seconds, and (the specific time is voluntarily set
Set) after, 10 feet for controlling chip IC 2 are reversed to high potential by low potential again, switching transistor Q2 conducting, relay JK obtain it is electric,
Three groups of normally opened contacts are attracted recovery again and power to load appliance.When there is leak current fault, the output end of leakage protection circuit 5 is just
It can be by leak current fault signal IΔn12 feet of control chip IC 2 are input to, control 10 foot of drive output of chip IC 2 by high electricity
Bit reversal is low potential, and switching transistor Q2 is disconnected, relay JK power loss, and three groups of normally opened contacts disconnect stopping power supply immediately, this
If when meet with the situation that restores electricity again that has a power failure then, because control chip IC 2 is by the leakage condition memory signal of storage chip IC3
Control without exporting reverse signal gives switching transistor Q2, so relay JK just power loss always, three groups of normally opened contacts then one
Directly being in an off state will not automatic pick；It has to manually press reset switch RESET again, it will by control chip IC 2
After the leakage condition memory signal of storage chip IC3 is reset, as long as leak current fault has excluded, 10 feet of chip IC 2 are controlled
High potential can be inverted by low potential and be always maintained at, relay JK obtains electric, switching transistor Q2 conducting, three groups of normally opened contact conductings
Restore electricity state.
In the present embodiment, the rectification circuit 1 includes rectifier diode D1,3rd resistor R3, first capacitor C1 and the
Seven capacitor C7, the first capacitor C1 and the 7th capacitor C7 are power filtering capacitor；The rectifier diode D1,3rd resistor
R3 and the 7th capacitor C7 are sequentially connected in series, and the anode of rectifier diode D1 is electrically connected with firewire L, and the positive terminal of the 7th capacitor C7 is leakage
Electric protection circuit 5 provides working power, the negative pole end ground connection of the 7th capacitor C7；The anode of the first capacitor C1 connects two poles of rectification
The cathode of pipe D1, the cathode of first capacitor C1 meet zero curve N.
In the present embodiment, first D.C. regulated power supply 21 include field-effect tube Q1, the second zener diode DW2,
Second capacitor C2 and first resistor R1, the second capacitor C2 are electrolytic capacitor；The cathode of the rectifier diode D1 respectively with
The drain electrode of field-effect tube Q1 and one end electrical connection of first resistor R1, the other end of first resistor R1 is respectively with field-effect tube Q1's
The electrical connection of the cathode of grid and the second zener diode DW2, the plus earth of the second zener diode DW2, second capacitor
The positive terminal of C2 is electrically connected with the source electrode of field-effect tube Q1, the negative pole end ground connection of the second capacitor C2, and the source electrode of field-effect tube Q1 is
Relay JK and driving switch circuit provide DC supply；Second D.C. regulated power supply 22 includes two pole of the first pressure stabilizing
Pipe DW1, third capacitor C3 and second resistance R2；Third capacitor C3 is electrolytic capacitor；The first zener diode DW1, third
Capacitor C3 and the 4th capacitor C4 are mutually in parallel, and the anode of the first zener diode DW1 and the negative pole end of third capacitor C3 are grounded,
The source electrode that the cathode of first zener diode DW1 passes through the second current-limiting resistance R2 and the field-effect tube Q1 of the first D.C. regulated power supply
Electrical connection, the cathode of the first zener diode DW1 are the output end of the second D.C. regulated power supply 22；When work, the first pressure stabilizing two
Operating voltage value of the pole pipe DW1 by the power good after second resistance R2 current limliting needed for single chip machine controlling circuit.
In the present embodiment, the leakage protection circuit 5 include the first induction coil ZCT1, the second induction coil ZCT2,
Test switch TEST, the 8th capacitor C8 to the 14th capacitor C14, the 8th resistance R8, the tenth resistance R10 of the 9th resistance R9, the tenth
One resistance R11 and leak current fault monitor ic chip 1；The leak current fault monitoring ic chip 1 has 8 feet and two inputs
End, 1 foot and 2 feet of leak current fault monitoring ic chip 1 are the first input end of leakage protection circuit 5, leak current fault monitoring collection
2 feet and 3 feet of blocking IC1 are the second input terminals of leakage protection circuit 5, and 7 feet of leak current fault monitoring ic chip 1 are electric leakages
The output end of circuit 5 is protected, 4 feet of leak current fault monitoring ic chip 1 meet zero curve N；Distinguish at the both ends of the 9th capacitor C9
With leak current fault monitoring ic chip 16 feet and 7 feet be electrically connected, the both ends of the 11st capacitor C11 respectively with leak current fault
4 feet and the electrical connection of 5 feet, the both ends of the tenth capacitor C10 for monitoring ic chip 1 monitor integrated package with leak current fault respectively
7 feet of IC1 and the electrical connection of 4 feet, leak current fault monitor the 4 feet ground connection of ic chip 1；8 feet of leak current fault monitoring ic chip 1
It is electrically connected with the other end of 3rd resistor R3, so that monitoring ic chip 1 for leak current fault provides direct-current working volts；Described
One end is electrically connected with 7 feet of leak current fault monitoring ic chip 1 after eight resistance R8 are in parallel with the 8th capacitor C8, the other end and control
12 feet of chip IC 2 are electrically connected, thus by leak current fault signal IΔnIt is input to 12 feet of control chip IC 2, the 9th capacitor
The both ends of C9 are electrically connected with 6 feet of leak current fault monitoring ic chip 1 and 7 feet respectively；The electricity of the 12nd capacitor C12 and the tenth
The both ends for hindering R10 are electrically connected with 1 foot of leak current fault monitoring ic chip 1 and 2 feet respectively；The 13rd capacitor C13 and
The both ends of 11 resistance R11 are electrically connected with 3 feet of leak current fault monitoring ic chip 1 and 2 feet respectively；14th capacitor
One end of C14 is electrically connected with 2 feet of control chip IC 2, other end ground connection；The first induction coil ZCT1 is set in firewire L
And on zero curve N, the both ends of first group of coil of the first induction coil ZCT1 monitor 1 foot of ic chip 1 with leak current fault respectively
And 2 foot electrical connections, one end of second group of coil of the first induction coil ZCT1 concatenate after the 9th current-limiting resistance R9 with test switch
Electrical connection, the other end are electrically connected with firewire L；Another terminal connecting zero line N of the test switch TEST, second induction coil
ZCT2 is set on ground wire E, and both ends and 3 feet of leak current fault monitoring ic chip 1 and 2 feet of the second induction coil ZCT2 are electrically connected
It connects；When work, when the first induction coil ZCT1 or the second induction coil ZCT2 sense leak current fault signal IΔnWhen, electric leakage event
The leak current fault signal that barrier monitoring ic chip 1 immediately senses the first induction coil ZCT1 or the second induction coil ZCT2
IΔn12 feet of control chip IC 2 are input to after amplifying processing, and pass through the 7th electricity again after control chip IC 2 is handled
Resistance is input to the base stage of switching transistor Q2, and switching transistor Q2 is disconnected, relay JK power loss, three groups of normally opened touchings of relay JK
Point disconnects cutting off the power immediately, to achieve the purpose that protect personal safety；After leak current fault excludes, it must press again multiple
Bit switch RESET, after being reset the leakage condition memory signal of storage chip IC3 by control chip IC 2, as long as there is no leakages
10 feet of electric fault, control chip IC 2 will be inverted by low potential and be always maintained at high potential, and relay JK obtains electric, switch three
Pole pipe Q2 conducting, three groups of normally opened contact conductings restore to connect alternating current to load appliance.When detection, when pressing test switch
Second group of coil of TEST, the first induction coil ZCT1 obtain signal, and first group of coil of the first induction coil ZCT1 is by the letter
It number is input to leak current fault monitoring ic chip 1, leak current fault monitoring ic chip 1 amplifies the electric leakage signal sensed
12 feet for handling and being input to control chip IC 2 are input to switch further through the 7th resistance after control chip IC 2 is handled again
The base stage of triode Q2, switching transistor Q2 are disconnected, and relay JK power loss, three groups of normally opened contacts of relay JK are extensive to break immediately
It opens, has achieved the purpose that detect leakage protecting plug working condition.
The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to institute
The embodiment of description.For the ordinary skill in the art, the principles of the present invention and objective are not being departed from
In the case of to these embodiments carry out it is a variety of variation, modification, replacement and deformation still fall in the protection scope of the utility model
It is interior.
Claims (5)
1. a kind of three pole on-off leakage protecting plug of intelligent control type, including rectification circuit (1) and leakage protection circuit (5)；Institute
The input terminal for stating rectification circuit (1) is electrically connected with city's alternating current, and the output end of rectification circuit (1) is that leakage protection circuit (5) mention
For working power；Characterized by further comprising D.C. regulated power supply, single chip machine controlling circuit (3) and relay switching circuit (4),
The output end of rectification circuit (1) is electrically connected with the input terminal of D.C. regulated power supply；The single chip machine controlling circuit (3) includes control
Chip (IC2) and storaging chip (IC3) are equipped with reset switch (RESET) on the control chip (IC2), control chip
(IC2) it is electrically connected with storaging chip (IC3), control chip (IC2) can transfer the signal of storaging chip (IC3) storage, institute
The output end for stating leakage protection circuit (5) is electrically connected with the input terminal of control chip (IC2)；The relay switching circuit (4)
Relay (JK) and driving switch circuit including three groups of normally opened contacts of band, one end of the relay (JK) and DC voltage-stabilizing electricity
The output end electrical connection in source is to obtain DC supply, the other end of relay (JK) and the output end of driving switch circuit
Electrical connection, three groups of normally opened contacts of relay (JK) are connected on respectively on firewire L, zero curve N and ground wire E, the driving switch electricity
The input terminal on road is electrically connected with the output end of control chip (IC2)；The output end of the D.C. regulated power supply is control chip
(IC2) and storaging chip (IC3) provides DC supply.
2. three pole on-off leakage protecting plug of intelligent control type according to claim 1, it is characterised in that the direct current is steady
Voltage source includes the first D.C. regulated power supply (21) and the second D.C. regulated power supply (22)；First D.C. regulated power supply (21)
Input terminal receive rectification circuit (1) output rectified voltage and carry out pressure stabilizing output, second D.C. regulated power supply (22)
It receives the DC voltage of the first D.C. regulated power supply (21) output and carries out decompression and pressure stabilizing；First D.C. regulated power supply
(21) output end is electrically connected that relay (JK) is made to obtain DC supply with one end of relay (JK)；Described second
D.C. regulated power supply (22) is that control chip (IC2) and storaging chip (IC3) provide DC supply.
3. three pole on-off leakage protecting plug of intelligent control type according to claim 2, it is characterised in that described first is straight
Flowing regulated power supply (21) includes field-effect tube (Q1), the second zener diode (DW2), the second capacitor (C2) and first resistor
(R1)；The one end of the output end of the rectification circuit (1) respectively with the drain electrode of field-effect tube (Q1) and first resistor (R1) is electrically connected
It connects, the other end of first resistor (R1) is electric with the cathode of the grid of field-effect tube (Q1) and the second zener diode (DW2) respectively
Connection, the plus earth of the second zener diode (DW2), one end of the second capacitor (C2) and the source electrode of field-effect tube (Q1) are electrically connected
It connects, other end ground connection, the source electrode of field-effect tube (Q1) is electrically connected to obtain DC supply with one end of relay (JK)；
Second D.C. regulated power supply (22) includes the first zener diode (DW1), third capacitor (C3) and second resistance (R2)；The
One zener diode (DW1) is mutually in parallel with third capacitor (C3), the plus earth of the first zener diode (DW1), and first is steady
The cathode of pressure diode (DW1) is electrically connected by second resistance (R2) with the source electrode of field-effect tube (Q1), the first zener diode
(DW1) cathode is the output end of the second D.C. regulated power supply (22).
4. three pole on-off leakage protecting plug of intelligent control type according to claim 1, it is characterised in that further include two poles
It manages (D2), the both ends of the diode (D2) are attempted by the both ends of relay (JK) and the cathode and the first direct current of diode (D2)
The output end of regulated power supply (21) is electrically connected；The driving switch circuit includes switching transistor (Q2) and the 5th capacitor (C5),
The base stage of the switching transistor (Q2) is electrically connected by the 7th resistance (R7) with the output end for controlling chip (IC2), switch three
The collector of pole pipe (Q2) is electrically connected with the other end of relay (JK), the emitter ground connection of switching transistor (Q2)；Described
Five capacitors (C5) are attempted by between the base stage and emitter of switching transistor (Q2).
5. three pole on-off leakage protecting plug of intelligent control type according to claim 1 or 2, it is characterised in that the control
The model of chip (IC2) is SN8P2711, shares 14 pins；The model of the storaging chip (IC3) is AT24C02, shares 8
Pin；The both ends of the reset switch (RESET) are electrically connected with 2 feet of control chip (IC2) and 14 feet respectively, in control core
Between 12 feet and 14 feet of piece (IC2) and it is connected to the 6th capacitor (C6), 12 feet of control chip (IC2) are leak current fault signals
IΔn10 feet of input terminal, control chip (IC2) are drive outputs, and 8 feet of control chip (IC2) are water-flow signal input terminals,
GL is the connector socket of water flow perceptron, and the 6th resistance (R6) is electrically connected with the output end of the second D.C. regulated power supply (22), is
Water flow perceptron provides DC supply, and 4 feet of control chip (IC2) pass through the 5th resistance (R5) and the second DC voltage-stabilizing electricity
The output end in source (22) is electrically connected, and 3 feet of control chip (IC2) pass through the 4th resistance (R4) and the second D.C. regulated power supply (22)
Output end electrical connection, control chip (IC2) 1 foot be electrically connected with the output end of the second D.C. regulated power supply (22)；Store core
8 feet of piece (IC3) are electrically connected with 1 foot of control chip (IC2), 6 feet of storaging chip (IC3) and 3 feet of control chip (IC2)
5 feet of electrical connection, storaging chip (IC3) are electrically connected with 4 feet of control chip (IC2), 1 to 4 foot and 7 of storaging chip (IC3)
Foot is grounded, and the both ends of the 4th capacitor (C4) are electrically connected with 4 feet of storaging chip (IC3) and 7 feet respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820478921.2U CN208241303U (en) | 2018-04-07 | 2018-04-07 | Three pole on-off leakage protecting plug of intelligent control type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820478921.2U CN208241303U (en) | 2018-04-07 | 2018-04-07 | Three pole on-off leakage protecting plug of intelligent control type |
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| Publication Number | Publication Date |
|---|---|
| CN208241303U true CN208241303U (en) | 2018-12-14 |
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|---|---|---|---|
| CN201820478921.2U Expired - Fee Related CN208241303U (en) | 2018-04-07 | 2018-04-07 | Three pole on-off leakage protecting plug of intelligent control type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306257A (en) * | 2018-04-07 | 2018-07-20 | 佛山市顺德区信辉达电子有限公司 | Three pole break-make leakage protecting plug of intelligent control type |
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2018
- 2018-04-07 CN CN201820478921.2U patent/CN208241303U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306257A (en) * | 2018-04-07 | 2018-07-20 | 佛山市顺德区信辉达电子有限公司 | Three pole break-make leakage protecting plug of intelligent control type |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181214 |