CN206422708U - Intelligent strong and weak electricity safety switching device - Google Patents
Intelligent strong and weak electricity safety switching device Download PDFInfo
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- CN206422708U CN206422708U CN201720024682.9U CN201720024682U CN206422708U CN 206422708 U CN206422708 U CN 206422708U CN 201720024682 U CN201720024682 U CN 201720024682U CN 206422708 U CN206422708 U CN 206422708U
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Abstract
The utility model is related to a kind of intelligent strong and weak electricity safety switching device.The deficiencies in the prior art are solved, technical scheme is：Including：Switching power circuit, switching power circuit input is electrically connected with city, and the light current output end of switching power circuit and the light current input of switching circuit are connected；Control module, is powered by switching power circuit, is connected with the output end of load judgment circuit, is connected with the control end of switching circuit；Load judgment circuit, the detection input of load judgment circuit is electrically connected with city, and the detection output of load judgment circuit and the forceful electric power input of switching circuit are connected, and load judgment circuit output end is connected with control module；The control end of switching circuit is connected with control module, the light current input of switching circuit and the output end of switching power circuit are connected, the forceful electric power input of switching circuit is connected with the detection output of load judgment circuit, the earth terminal of switching circuit is connected with weak electricity measuring circuit, and the connecting to neutral end of switching circuit is connected with civil power zero line.
Description
Technical field
The utility model is a kind of safe voltage conversion equipment, more particularly to a kind of safe converting means of intelligent strong and weak electricity
Put.
Background technology
Socket, switch at present commercially is all directly to be connected on above the forceful electric power of civil power, and various countries' standard is different, substantially divides
For 110VAC or so and 220VAC or so, they are applied in all occasions for having an electricity, sometimes very dangerous, such as：Family
When having child in front yard etc., after human body imprudence is touched, it may be possible to fatal threat.So if releasing intelligence
Strong, weak electricity conversion equipment, whether energy automatic decision, which has, is really supported on above loop, if resistive load, even compare
Faint load, such as：0.5W, can open forceful electric power, also can intelligence if Switching Power Supply, the capacitive load of resistance-capacitance depressurization class
Forceful electric power is opened after determining, if do not loaded, human safety voltage can be switched to, typically conventional 24V or 12V most insures,
It is ensured that human body Long Term Contact does not have any problem.Tool understands, at present on the market also without real intelligent decision and control
Forceful electric power（Civil power 110VAC and 220VAC is the more commonly used）With light current（Safe voltage is below 36V）Voltage between converting means
Put, including safety socket on the market, be all to ensure not touch copper sheet from structure, but copper sheet is in itself or with forceful electric power
, it is not real safety, simply plays a part of isolation, if isolation is bad, still can causes human electric shock.
Utility model content
The purpose of this utility model is current on the market also without real intelligence to solve to exist in current technology scheme
It can judge and control forceful electric power（Civil power 110VAC and 220VAC is the more commonly used）With light current（Safe voltage is below 36V）Voltage it
Between conversion equipment, including safety socket on the market is all to ensure not touch copper sheet from structure, but copper sheet is in itself
Or with forceful electric power, it is not real safety, simply plays a part of isolation, if isolation is bad, still can cause human body
The problem of electric shock, this utility model provides a kind of intelligent strong and weak electricity safety switching device.
The utility model solves the technical scheme that its technical problem used：A kind of safe converting means of intelligent strong and weak electricity
Put, by mains-supplied, including：
Switching power circuit, switching power circuit input is electrically connected with city, the light current output end of switching power circuit with
The light current input connection of switching circuit；
Control module, is powered by switching power circuit, is connected with the output end of load judgment circuit, the control with switching circuit
End connection processed；
Load judgment circuit, the detection input of load judgment circuit is electrically connected with city, and the detection of load judgment circuit is defeated
Go out end to be connected with the forceful electric power input of switching circuit, load judgment circuit output end is connected with control module；
Switching circuit, the control end of switching circuit is connected with control module, light current input and the switch electricity of switching circuit
The output end connection of source circuit, the forceful electric power input of switching circuit is connected with the detection output of load judgment circuit, switching electricity
The earth terminal on road is connected with weak electricity measuring circuit, and the connecting to neutral end of switching circuit is connected with civil power zero line；
Weak electricity measuring circuit：The earth terminal of weak electricity measuring circuit and the earth terminal of switching circuit are connected, weak electricity measuring circuit
Control end be connected with control module.The utility model by the difference according to load, intelligent decision short circuit, open circuit, human contact,
Resistive load, capacitive load etc., perfectly solve socket, switch etc. and apply the unsafe problem of class occasion, filled up market
Vacuum requirement, it will produce huge economical, societal benefits.
Preferably, the load judgment circuit includes：
Current transformer ZT1, diode D3, diode D4, amplifier U3A, resistance R14, resistance R17 and electric capacity C21, electricity
Current transformer ZT1 the 4th Duan Yu cities electrical connection, current transformer ZT1 the 3rd end and the forceful electric power input of switching circuit connect
Connect, current transformer ZT1 first end anode respectively with diode D3, diode D4 negative electrode and amplifier U3A it is negative
Input is connected, anode, diode the D3 negative electrode and amplifier of current transformer ZT1 the second end respectively with diode D4
U3A positive input terminal connection, diode D4 plus earth, diode D4 negative electrode passes through the defeated of resistance R14 and amplifier U3A
Go out end connection, amplifier U3A output end is connected with resistance R17 first end, resistance R17 the second end and control module connect
Connect, resistance R17 the second end is grounded by electric capacity C21.
Preferably, the switching circuit includes：Triode Q1, triode Q2, resistive load R20, resistance R18, resistance
R19, resistance R25 and capacitive load C23, diode D5, diode D6, relay RY1, socket ACL2, socket ACN2, relay
RY1 includes relay coil and double-point double-throw switch, and switching circuit is also connected with the control power end of switching power circuit,
Triode Q2 emitter stage and the light current output end of switching power circuit are connected, triode Q2 emitter stage and three poles
Connected between pipe Q2 base stage by resistance R25, triode Q2 base stage and control module connector are connected, triode
Q2 colelctor electrode and the first normally-closed contact of double-point double-throw switch are connected；
First normally opened contact of double-point double-throw switch and current transformer ZT1 three-terminal link, double-point double-throw switch
Second normally opened contact is connected with civil power zero line；
Diode D5 negative electrode and the light current output end of switching power circuit are connected, diode D5 anode and triode Q1
Colelctor electrode connection, diode D5 negative electrode is connected by relay coil with diode D5 anode, triode Q1 transmitting
Pole is grounded, and triode Q1 base stage is connected by resistance R18 and a connector of control module, and triode Q1 base stage passes through
Resistance R19 is connected with triode Q1 emitter stage；
First movable contact of double-point double-throw switch is connected with socket ACL2, the second movable contact and socket of double-point double-throw switch
ACN2 connections, socket ACL2 is connected by resistive load R20 with socket ACN2, and socket ACL2 is also by capacitive load C23 with inserting
Seat ACN2 connections.
Preferably, the weak electricity measuring circuit include resistance R21, resistance R22, resistance R26, resistance R24, resistance R23,
Diode D6 and electric capacity C22, resistance R21 first end are connected with resistance R22 the second end, and resistance R22 first end passes through electricity
R23 ground connection is hindered, resistance R24 first end is connected with resistance R22 first end, and resistance R24 the second end is connect by electric capacity C22
Ground, resistance R24 the second end is connected with diode D6 anode, and diode D6 negative electrode is connected with control power end, diode
D6 anode and control module connector are connected, resistance R21 the second end pass through resistance R26 and control module one
Connector is connected, and resistance R21 the second end and the second normally-closed contact of double-point double-throw switch are connected.
Preferably, the control module is to include AD mouthfuls, one input port of two analog-to-digital conversions and two delivery outlets
Single-chip microcomputer.
Substantial effect of the present utility model is：The utility model is by the difference according to load, and intelligent decision is short-circuit, disconnected
Road, human contact, resistive load, capacitive load etc., perfectly solve socket, switch etc. and are asked using class occasion is unsafe
Topic, has filled up the vacuum requirement in market, it will produce huge economical, societal benefits.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of control module in the utility model；
Fig. 2 is the circuit theory diagrams of switching power circuit in the utility model；
Fig. 3 is the circuit theory diagrams of load judgment circuit in the utility model；
Fig. 4 is the circuit theory diagrams of switching circuit in the utility model.
Embodiment
Below by specific embodiment, and with reference to accompanying drawing, the technical solution of the utility model is made further specifically
It is bright.
Embodiment：
A kind of intelligent strong and weak electricity safety switching device（Referring to accompanying drawing 1 to accompanying drawing 4）, by mains-supplied, including：
Switching power circuit, switching power circuit input is electrically connected with city, the light current output end of switching power circuit with
The light current input connection of switching circuit；
Control module, is powered by switching power circuit, is connected with the output end of load judgment circuit, the control with switching circuit
End connection processed；
Load judgment circuit, the detection input of load judgment circuit is electrically connected with city, and the detection of load judgment circuit is defeated
Go out end to be connected with the forceful electric power input of switching circuit, load judgment circuit output end is connected with control module；
Switching circuit, the control end of switching circuit is connected with control module, light current input and the switch electricity of switching circuit
The output end connection of source circuit, the forceful electric power input of switching circuit is connected with the detection output of load judgment circuit, switching electricity
The earth terminal on road is connected with weak electricity measuring circuit, and the connecting to neutral end of switching circuit is connected with civil power zero line；
Weak electricity measuring circuit：The earth terminal of weak electricity measuring circuit and the earth terminal of switching circuit are connected, weak electricity measuring circuit
Control end be connected with control module.
The load judgment circuit includes：
Current transformer ZT1, diode D3, diode D4, amplifier U3A, resistance R14, resistance R17 and electric capacity C21, electricity
Current transformer ZT1 the 4th Duan Yu cities electrical connection, current transformer ZT1 the 3rd end and the forceful electric power input of switching circuit connect
Connect, current transformer ZT1 first end anode respectively with diode D3, diode D4 negative electrode and amplifier U3A it is negative
Input is connected, anode, diode the D3 negative electrode and amplifier of current transformer ZT1 the second end respectively with diode D4
U3A positive input terminal connection, diode D4 plus earth, diode D4 negative electrode passes through the defeated of resistance R14 and amplifier U3A
Go out end connection, amplifier U3A output end is connected with resistance R17 first end, resistance R17 the second end and control module connect
Connect, resistance R17 the second end is grounded by electric capacity C21.
The switching circuit includes：Triode Q1, triode Q2, resistive load R20, resistance R18, resistance R19, resistance
R25 and capacitive load C23, diode D5, diode D6, relay RY1, socket ACL2, socket ACN2, relay RY1 include
Relay coil and double-point double-throw switch, switching circuit are also connected with the control power end of switching power circuit,
Triode Q2 emitter stage and the light current output end of switching power circuit are connected, triode Q2 emitter stage and three poles
Connected between pipe Q2 base stage by resistance R25, triode Q2 base stage and control module connector are connected, triode
Q2 colelctor electrode and the first normally-closed contact of double-point double-throw switch are connected；
First normally opened contact of double-point double-throw switch and current transformer ZT1 three-terminal link, double-point double-throw switch
Second normally opened contact is connected with civil power zero line；
Diode D5 negative electrode and the light current output end of switching power circuit are connected, diode D5 anode and triode Q1
Colelctor electrode connection, diode D5 negative electrode is connected by relay coil with diode D5 anode, triode Q1 transmitting
Pole is grounded, and triode Q1 base stage is connected by resistance R18 and a connector of control module, and triode Q1 base stage passes through
Resistance R19 is connected with triode Q1 emitter stage；
First movable contact of double-point double-throw switch is connected with socket ACL2, the second movable contact and socket of double-point double-throw switch
ACN2 connections, socket ACL2 is connected by resistive load R20 with socket ACN2, and socket ACL2 is also by capacitive load C23 with inserting
Seat ACN2 connections.
The weak electricity measuring circuit includes resistance R21, resistance R22, resistance R26, resistance R24, resistance R23, diode D6
With electric capacity C22, resistance R21 first end is connected with resistance R22 the second end, and resistance R22 first end is connect by resistance R23
Ground, resistance R24 first end is connected with resistance R22 first end, and resistance R24 the second end is grounded by electric capacity C22, resistance
R24 the second end is connected with diode D6 anode, and diode D6 negative electrode is connected with control power end, diode D6 anode
It is connected with a connector of control module, resistance R21 the second end is connected by resistance R26 and a connector of control module
Connect, resistance R21 the second end and the second normally-closed contact of double-point double-throw switch are connected.
The control module is the single-chip microcomputer for including AD mouthfuls, one input port of two analog-to-digital conversions and two delivery outlets.
When the present embodiment is used：
Load judgment circuit judges the situation of load in forceful electric power work, senses whether there is electricity by current transformer ZT1
Stream, and amplify by amplifier U3A and be converted into voltage so that the voltage detected enters an analog-to-digital conversion of control module
AD mouthfuls of MCU-AD1 judge to be currently operating in underloading, heavy duty or no-load condition；
Switching circuit judges loadtype with switching the output of forceful electric power or light current by relay RY1, when on control device
Electricity or from forceful electric power be converted into light current when, control module control mouth MCU-IO1 output low level, triode Q1 disconnect, relay
RY1 is operated in normally-closed contact, now starts to judge that load is resistive load, capacitive load or zero load；
The determination methods of resistive load：
In 1 second, safe voltage is directly connected to by control unit MCU control triode Q2 conductings by triode Q2
On socket ACL2, if there is resistive load outside, then the current loop of safe voltage will be connected to slotting by resistive load R20
Seat ACN2, then by resistance R21, R22 and resistance R23 partial pressure, obtains the magnitude of voltage of resistive load, passes through current-limiting resistance
R24 is connected in control module, obtains different voltages according to the size of resistive load, MCU so as to judge be short circuit, open circuit or
Human contact, if short circuit or human contact's situation would not switch to forceful electric power, has carried out the protection of safety；
The determination methods of capacitive load：
As judged within 1 second no resistive load above, the delivery outlet MCU-IO2 level that control module can be set at lower 1 second is arteries and veins
Punching output, will produce the voltage of an alternation, capacitive load electric capacity C23 will have electric current to pass through, so as to form loop, now electric current
Control module will be connected to by resistance R26, directly determines whether voltage to determine whether capacitive load；
Unloaded determination methods：
Judged resistive load above by 1 second, the another method for judging capacitive load for 1 second draws whether there be depositing for real load
If both above load is all judged as NO, then be exactly unloaded；
According to above-mentioned judgement, if resistive or capacitive load, control module driving triode Q1 conductings, relay
RY1 is operated in normally opened contact, and accessory power outlet ACL2 and ACN2 switches to forceful electric power to export.
The present embodiment is by the difference according to load, intelligent decision short circuit, open circuit, human contact, resistive load, capacitive load
Deng, perfectly solve socket, switch etc. apply the unsafe problem of class occasion, filled up the vacuum requirement in market, it will production
Raw huge economical, societal benefits.
Embodiment described above is a kind of preferably scheme of the present utility model, not makees any to the utility model
Formal limitation, also has other variants and remodeling on the premise of without departing from the technical scheme described in claim.
Claims (5)
1. a kind of intelligent strong and weak electricity safety switching device, by mains-supplied, it is characterised in that including：
Switching power circuit, switching power circuit input is electrically connected with city, light current output end and the switching of switching power circuit
The light current input connection of circuit；
Control module, is powered by switching power circuit, is connected with the output end of load judgment circuit, the control end with switching circuit
Connection；
Load judgment circuit, the detection input of load judgment circuit is electrically connected with city, the detection output of load judgment circuit
It is connected with the forceful electric power input of switching circuit, load judgment circuit output end is connected with control module；
Switching circuit, the control end of switching circuit is connected with control module, the light current input and switch power supply of switching circuit
The output end connection on road, the forceful electric power input of switching circuit is connected with the detection output of load judgment circuit, switching circuit
Earth terminal is connected with weak electricity measuring circuit, and the connecting to neutral end of switching circuit is connected with civil power zero line；
Weak electricity measuring circuit：The earth terminal of weak electricity measuring circuit and the earth terminal of switching circuit are connected, the control of weak electricity measuring circuit
End processed is connected with control module.
2. intelligent strong and weak electricity safety switching device according to claim 1, it is characterised in that the load judgment circuit bag
Include：
Current transformer ZT1, diode D3, diode D4, amplifier U3A, resistance R14, resistance R17 and electric capacity C21, electric current are mutual
Sensor ZT1 the 4th Duan Yu cities electrical connection, current transformer ZT1 the 3rd end and the forceful electric power input of switching circuit are connected, electricity
The negative input end of current transformer ZT1 first end anode respectively with diode D3, diode D4 negative electrode and amplifier U3A
Connection, current transformer ZT1 the second end anode respectively with diode D4, diode D3 negative electrode and amplifier U3A
Positive input terminal is connected, diode D4 plus earth, and diode D4 negative electrode passes through resistance R14 and amplifier U3A output end
Connection, amplifier U3A output end is connected with resistance R17 first end, and resistance R17 the second end is connected with control module, electricity
Resistance R17 the second end is grounded by electric capacity C21.
3. intelligent strong and weak electricity safety switching device according to claim 2, it is characterised in that the switching circuit includes：
Triode Q1, triode Q2, resistive load R20, resistance R18, resistance R19, resistance R25 and capacitive load C23, diode D5,
Diode D6, relay RY1, socket ACL2, socket ACN2, relay RY1 include relay coil and double-point double-throw switch, cut
Circuit is changed also to be connected with the control power end of switching power circuit,
Triode Q2 emitter stage and the light current output end of switching power circuit are connected, triode Q2 emitter stage and triode Q2
Base stage between connected by resistance R25, triode Q2 base stage and control module connector are connected, triode Q2's
The first normally-closed contact connection of colelctor electrode and double-point double-throw switch；
First normally opened contact of double-point double-throw switch and current transformer ZT1 three-terminal link, the second of double-point double-throw switch
Normally opened contact is connected with civil power zero line；
Diode D5 negative electrode and the light current output end of switching power circuit are connected, diode D5 anode and triode Q1 collection
Electrode is connected, and diode D5 negative electrode is connected by relay coil with diode D5 anode, and triode Q1 emitter stage connects
Ground, triode Q1 base stage is connected by resistance R18 and a connector of control module, and triode Q1 base stage passes through resistance
R19 is connected with triode Q1 emitter stage；
First movable contact of double-point double-throw switch is connected with socket ACL2, the second movable contact and the socket ACN2 of double-point double-throw switch
Connection, socket ACL2 is connected by resistive load R20 with socket ACN2, and socket ACL2 also passes through capacitive load C23 and socket
ACN2 connections.
4. intelligent strong and weak electricity safety switching device according to claim 3, it is characterised in that the weak electricity measuring circuit bag
Include resistance R21, resistance R22, resistance R26, resistance R24, resistance R23, diode D6 and electric capacity C22, resistance R21 first end with
Resistance R22 the second end series connection, resistance R22 first end is grounded by resistance R23, and resistance R24 first end is with resistance R22's
First end is connected, and resistance R24 the second end is grounded by electric capacity C22, and resistance R24 the second end connects with diode D6 anode
Connect, diode D6 negative electrode is connected with control power end, diode D6 anode and control module connector are connected, electricity
The second end for hindering R21 is connected by resistance R26 and a connector of control module, resistance R21 the second end and DPDT
The second normally-closed contact connection of switch.
5. intelligent strong and weak electricity safety switching device according to claim 3, it is characterised in that the control module is to include
There is the single-chip microcomputer of AD mouthfuls, one input port of two analog-to-digital conversions and two delivery outlets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720024682.9U CN206422708U (en) | 2017-01-10 | 2017-01-10 | Intelligent strong and weak electricity safety switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720024682.9U CN206422708U (en) | 2017-01-10 | 2017-01-10 | Intelligent strong and weak electricity safety switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206422708U true CN206422708U (en) | 2017-08-18 |
Family
ID=59574104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720024682.9U Withdrawn - After Issue CN206422708U (en) | 2017-01-10 | 2017-01-10 | Intelligent strong and weak electricity safety switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206422708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533242A (en) * | 2017-01-10 | 2017-03-22 | 杭州和而泰智能控制技术有限公司 | Intelligent strong and weak current safe conversion apparatus and safe conversion method therefor |
-
2017
- 2017-01-10 CN CN201720024682.9U patent/CN206422708U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533242A (en) * | 2017-01-10 | 2017-03-22 | 杭州和而泰智能控制技术有限公司 | Intelligent strong and weak current safe conversion apparatus and safe conversion method therefor |
| CN106533242B (en) * | 2017-01-10 | 2023-05-23 | 杭州和而泰智能控制技术有限公司 | Intelligent strong and weak current safety conversion device and safety conversion method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170818 Effective date of abandoning: 20230523 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20170818 Effective date of abandoning: 20230523 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |