CN209148750U - Switching device, electric energy meter take control system - Google Patents
Switching device, electric energy meter take control system Download PDFInfo
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- CN209148750U CN209148750U CN201821378679.8U CN201821378679U CN209148750U CN 209148750 U CN209148750 U CN 209148750U CN 201821378679 U CN201821378679 U CN 201821378679U CN 209148750 U CN209148750 U CN 209148750U
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Abstract
A kind of switching device includes control module and several magnetic latching relays, the control module is for receiving control signal and controlling magnetic latching relay divide-shut brake, the control module includes control circuit, for receiving the control signal receiving circuit of control signal, driving circuit for driving magnetic latching relay to act, current detection circuit and power failure detection circuit, current detection component is provided in the magnetic latching relay, current detection circuit is connected between current detection component and control circuit, power failure detection circuit is used to detect the phases line voltage of magnetic latching relay inlet wire side and the voltage signal that will test is exported to control circuit, the on-off of magnetic latching relay connection electric line and control electric line.The utility model further relates to a kind of electric energy meter expense control system including above-mentioned switching device.
Description
Technical field
The utility model relates to a kind of electric energy meter technical fields, take control system more particularly, to a kind of switching device, electric energy meter
System.
Background technique
Currently, the electric energy meter expense control system in power grid mainly include by electric energy meter and external breaker, external breaker by
Control the intelligence expense control function that arrearage automatic brake separating, the automatic closing that continues to pay dues are realized in electric energy meter.External breaker by control circuit,
Motor drive module, motor, position detecting circuit, transmission mechanism, breaker composition.Wherein, control circuit receives electric energy meter
Motor-drive circuit is sent instructions to after expense control signal, control motor rotation drives transmission mechanism to complete the divide-shut brake of breaker,
Realize the function of arrearage separating brake, the combined floodgate that continues to pay dues.Wherein transmission mechanism needs to have enough intensity, and motor needs to supply enough
Power could reliable operation, lead to electric energy meter expense control system structure and assembly technology be complicated and power consumption is big.
Summary of the invention
The utility model mainly solves electric energy meter in the prior art and takes control system structure and assembly technology complexity and power consumption
Big problem provides a kind of switching device, electric energy meter expense control system.Magnetic latching relay, Neng Goujie are used in switching device
Save the energy.
Above technical problems of the utility model are mainly solved by the following technical scheme: a kind of switch dress
It sets, the switching device includes control module and several magnetic latching relays, and the control module is for receiving control signal
And magnetic latching relay divide-shut brake is controlled, the control module includes control circuit, the control signal for receiving control signal
Circuit, driving circuit, current detection circuit and power failure detection circuit for driving magnetic latching relay to act are received, it is described
Be provided with current detection component in magnetic latching relay, current detection circuit be connected to current detection component and control circuit it
Between, power failure detection circuit is used to detect the phases line voltage of magnetic latching relay inlet wire side and the voltage signal that will test exports
To control circuit, the on-off of magnetic latching relay connection electric line and control electric line.Be provided in the utility model with
The control module that magnetic latching relay matches realizes that intelligence takes the function of control, instead of the external breaker of existing electric energy meter
Circuit drives breaker without motor-drive circuit, more energy saving, reduces costs.The utility model passes through
Driving circuit controls relay set and reset, and when work need to only add pulse, is then not necessarily to any driving, be greatly saved
Energy reduces consumption.
As a preferred embodiment, the current detection component includes detection resistance or current transformer, control circuit root
Operation is carried out according to detection resistance or the collected voltage/current signals of current transformer and whether judgement is overloaded or short with electric line
Road.This programme detect control circuit can also to the electric current on magnetic latching relay, by control circuit according to current potential
Difference calculates the current value of each phase, and short circuit and overload protection function may be implemented.
As a preferred embodiment, the control module further includes condition indication circuit, condition indication circuit connection control
Circuit and the opening and closing state for being used to indicate magnetic latching relay.
As a preferred embodiment, the control module further include manual/auto operation mode selection switch and manually by
Button, manual/auto operation mode selection switch connects control circuit with hand push button, when user passes through manual/auto operation mould
When formula selection switch selection automatic operation mode, control circuit controls magnetic latching relay division according to the control signal received
Lock；When user is by manual/auto operation mode selection switch selection manual operation mode, user can operate hand push button,
Control circuit controls magnetic latching relay divide-shut brake to the operation of hand push button according to user.Pass through manual/auto operation mode
Selection switch provides the selection of manually and automatically control function.When selecting manual, control circuit, control circuit are transmitted a signal to
The expense control signal from electric energy meter is not handled, and the on-off of magnetic latching relay is by manual operation.When selecting automatic, magnetic is kept
The on off operating mode of relay is controlled automatically by the expense control signal of electric energy meter, i.e. arrearage separating brake, and continue to pay dues automatic closing.By pressing manually
Button realizes the control of magnetic latching relay contact, transmits a signal to control circuit after pressing hand push button, is controlled by control circuit
Operation.In the case that power grid has electricity, non-arrearage, user can realize magnetic latching relay contact by hand push button
On-off control, when arrearage occurs, do not close a floodgate user presses hand push button.
As a preferred embodiment, when controlling signal is predetermined value, control circuit is limited according to user to pressing manually
The operation of button controls magnetic latching relay divide-shut brake.
As a preferred embodiment, the control module and the magnetic latching relay all have the shell of unit construction
The shell of body, control module and magnetic latching relay is riveted together.
The utility model also provides a kind of electric energy meter expense control system, and the switching device connects an electric energy meter, switching device
It receives the control signal from electric energy meter and magnetic latching relay divide-shut brake is controlled according to control signal.
As a preferred embodiment, the control module of the switching device further includes feed circuit, the feed circuit
Input terminal connects the terminal block end of magnetic latching relay, and output end connects control circuit and electric energy meter.Feed circuit input terminal
It is connected to the leading-out terminal i.e. terminal block end of magnetic latching relay and load connection, feed circuit is for acquiring magnetic latching relay
Then the three phase mains signal of leading-out terminal feeds back to electric energy meter, the work of control circuit feedback control circuit.
Therefore, the utility model has the advantages that:
It is provided with the control module matched with magnetic latching relay, realizes that intelligence takes the function of control, instead of existing
The external breaker circuit of electric energy meter, drives breaker without motor-drive circuit, more energy saving, reduces into
This.
Control relay set and reset by driving circuit, when work need to only add pulse, then be not necessarily to any drive
It is dynamic, energy is greatly saved, reduces consumption.
Detailed description of the invention
Fig. 1 is a kind of structural framing schematic diagram for taking control system in the utility model；
Fig. 2 is a kind of schematic diagram of internal structure of magnetic latching relay in the utility model switching device；
Fig. 3 is a kind of schematic diagram of internal structure of control module in the utility model switching device；
Fig. 4 is the structural representation that control module and magnetic latching relay are riveted together in the utility model switching device
Figure；
Fig. 5 is that the circuit structure of the first embodiment of the driving circuit of control module in the utility model switching device shows
It is intended to；
Fig. 6 is that the circuit structure of the second embodiment of the driving circuit of control module in the utility model switching device shows
It is intended to.
1- electric energy meter 2- control module 3- magnetic latching relay 4- controls signal receiving circuit 5- control circuit 6- and drives
Dynamic circuit 7- coil 8- current detection component 9- current detection circuit 10- condition indication circuit 11- power failure detection circuit
The manual/auto operation mode of 12- selects switch 13- hand push button 14- feed circuit 20- control module shell 30- shell
31- static contact 32- static contact terminal plate 33- moving contact 34- moving contact terminal plate 35- connecting terminal 36- armature component
Yoke 372- lower yoke on 37- yoke component 361- armature 362- armature bracket 363- pushing plate 371-.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment:
A kind of electric energy meter takes control system, as shown in Figure 1, including electric energy meter 1 and switching device, switching device includes control mould
Block 2 and magnetic latching relay 3, wherein the quantity of magnetic latching relay 3 can be one or more.Magnetic latching relay 3 connects
Live wires road, can be controlled by combined floodgate to sound contact in magnetic latching relay 3 or sub-switching operation with electric line
On-off.Control module 2 is connected between electric energy meter 1 and magnetic latching relay 3, and control module 2 receives the control from electric energy meter 1
Signal, and 3 divide-shut brake of magnetic latching relay is controlled according to control signal.Wherein control signal can be arrearage signal or the letter that continues to pay dues
Number, when controlling signal is arrearage signal, control module 2 controls 3 separating brake of magnetic latching relay, and electric line is used in disconnection；Work as control
Signal is when continuing to pay dues signal, and control module 2 controls magnetic latching relay 3 and closes a floodgate, and closure uses electric line.Control module 2 includes control
Circuit 5 processed, control signal receiving circuit 4, driving circuit 6, wherein the control signal in control module 2 receives circuit 4 from electricity
Control circuit 5 can be outputed signal to after the reception control signal of table 1, control circuit 5 is handled the signal received, after operation
Driving circuit 6 is outputed signal to, driving circuit 6 controls the divide-shut brake movement of magnetic latching relay 3.Control circuit 5 includes power supply
Circuit and microcontroller, power circuit provide power supply for microcontroller.
Control module 2 further includes current detection circuit 9, and magnetic latching relay 3 includes coil 7 and current detection component 8, line
The driving circuit 6 of 7 link control modules 2 is enclosed, current detection circuit 9 is connected between current detection component 8 and control circuit 5,
Current detection component 8 can be current transformer or detection resistance, such as copper-manganese resistance.Wherein, the acquisition of current detection component 8 stream
Current signal through magnetic latching relay 3, and collected current signal is exported to current detection circuit 9, current detecting electricity
To control circuit 5 is outputed signal to after current signal processing, control circuit 5 is collected according to current detection circuit 9 on road 9
Voltage/current signals are handled, operation and the loading condition that magnetic latching relay 3 is judged with this, that is, judge that magnetic keeps relay
3 load end of device whether overloaded with electric line or short circuit.Specifically, when the current signal that current detection component 8 detects is lower than
When predetermined value, then judge that magnetic latching relay 3 is in normal load state；When the current signal that current detection component 8 detects
When higher than predetermined value, then the overload of magnetic latching relay 3 or short circuit are judged, and control after judging electricity consumption circuit overload or short circuit
3 separating brake of magnetic latching relay, to realize to the overload or short-circuit protection with electric line.Specifically, when control circuit 5 judges electricity
The signal that current detection circuit 9 detects is more than predetermined value in the given time, then judges electricity consumption circuit overload or short circuit, and export
Signal to driving circuit 6, driving circuit 6 drives 3 separating brake of magnetic latching relay.
Control module 2 further includes power failure detection circuit 11, and power failure detection circuit 11 connects control circuit 5.Outage detection electricity
Road 11 connects the side of magnetic latching relay end of incoming cables, for detecting the phases line voltage of inlet wire side, and the voltage that will test
To control circuit 5, whether control circuit 5 has electricity according to the signal judgement electric line received for output after signal processing.Work as control
The control signal that circuit 5 processed receives is arrearage signal, and when electricity no with electric line, then keep point of magnetic latching relay 3
"on" position is constant, if having electricity with electric line, controls 3 separating brake of magnetic latching relay.When the control letter that control circuit 5 receives
Number to continue to pay dues signal, and when with electric line without electricity, then keep the opening and closing state of magnetic latching relay 3 constant, if using electric wire
Lu You electricity then controls the combined floodgate of magnetic latching relay 3.In this way, control circuit 5 judges magnetic when receiving control signal, in addition to detecting
Outside the opening and closing state of guard relay 3, can also detect whether judgement electric line has electricity, further ensure that magnetic keep after
The reliability of the operation of electric appliance 3.
Control module 2 further includes feed circuit 14, and feed circuit 14 is connected between electric energy meter 1 and magnetic latching relay 3,
Feed circuit 14 obtains the voltage signal at acquisition terminal block end from the leading-out terminal of magnetic latching relay 3, and will be at voltage signal
Output signal to electric energy meter 1 after reason, electric energy meter 1 with this judge the opening and closing state after magnetic latching relay 3 acts whether with control
Signal Matching processed.When the control signal that electric energy meter 1 exports is arrearage signal, if the voltage signal that feed circuit 14 is got is super
Predetermined value is crossed, then electric energy meter 1 judges that magnetic latching relay 3 is in "on" position, i.e. magnetic latching relay 3 is used without normally disconnecting
Electric line or possibility there are stealing, electric energy meter 1 is alarmed at this time.When the control signal that electric energy meter 1 exports is to continue to pay dues signal,
If the voltage signal that feed circuit 14 is got is lower than predetermined value, electric energy meter 1 judges that magnetic latching relay 3 is in separating brake shape
State, i.e. magnetic latching relay do not have a normally closed circuit, after subscriber payment still can not normal electricity consumption, electric energy meter 1 alarms.In addition,
Feed circuit 14 is also connected with control circuit 5, and feed circuit 14, will after the voltage that magnetic latching relay 3 obtains terminal block end
Control circuit 5 is outputed signal to after voltage signal processing, control circuit 5 judges the opening and closing state of magnetic latching relay 3 with this,
Judge magnetic latching relay 3 either with or without after control circuit 5 sends a signal to driving circuit 6 under the control of driving circuit 6
Normally complete divide-shut brake movement.
Control module 2 further includes manual/auto operation mode selection switch 12 and hand push button 13, manual/auto operation
Mode selection switch 12 and hand push button 13 are connected to control circuit 5, and user can select to open by manual/auto operation mode
It closes 12 switching manual operation modes or is automatically brought into operation operation.In the manual operating mode, user can be controlled by hand push button 13
3 divide-shut brake of magnetic latching relay processed.In addition, that is, electric energy meter 1 is to the control signal that control module 2 issues if subscriber arrearage
Arrearage signal, user can not control magnetic latching relay divide-shut brake by hand push button 13, i.e., announcement user passes through manual/auto
Operation mode selection switch 12 has selected manual operation mode, and the control circuit 5 of control module 2 will not respond user to manual
The operation of button 13 and control 3 divide-shut brake of magnetic latching relay, at this time control circuit 5 be only in response to electric energy meter 1 output control
Signal.Under automatic operation mode, user can not control 3 divide-shut brake of magnetic latching relay by hand push button 13, at this point, control
Circuit 5 controls 3 divide-shut brake of magnetic latching relay according to the control signal of electric energy meter 1.
Control module 2 further includes condition indication circuit 10, and condition indication circuit 10 connects control circuit 5, and control circuit 5 is defeated
Signal is to condition indication circuit 10 out, and condition indication circuit 10 is according to the opening and closing state of signal designation magnetic latching relay.
As shown in Fig. 2, magnetic is kept for the schematic diagram of internal structure of magnetic latching relay 3 in the utility model switching device
The shell mechanism of relay 3 is unit construction identical with housing of mini-type circuit breaker structure in the art.Magnetic latching relay 3
Including shell 30, static contact 31, static contact terminal plate 32, moving contact 33, moving contact terminal plate 34, connecting terminal 35, armature group
Part 36, yoke component 37, coil 7 and current detection component 8.Wherein, shell 30 is unit construction, and the shell 30 includes a left side
Right side plate, upper and lower side plate and front and back side plate (one in the side plate of front and back is only shown in figure), in the left side plate of shell
Side is respectively arranged with a connecting terminal 35, and the intermediate position of lower side panel forms a recessed portion to recess on the inside of shell 30, leads to
Crossing the recessed portion can be fixed on shell 30 in outer rail, and the intermediate position of epipleural is supported or opposed convex from the direction of lower side panel
Out.Static contact 31, moving contact 33, armature component 36, yoke component 37 and coil 7 are arranged close to after epipleural outwardly protrudes
In the accommodation space formed on the inside of shell 30.Yoke component 37 includes the iron core (not shown) and difference position across coil 7
In the upper yoke 371 and lower yoke 372 of 7 upper and lower ends of coil, upper yoke 371 and lower yoke 372 contacted with iron core or one at
Type.Armature component 36 includes armature 361, armature bracket 362 and pushing plate 363, and armature 361 is installed in a left side for armature bracket 362
Right two sides, armature bracket 362 are installed on shell 30 and can rotate around carriage center.363 one end of pushing plate connects armature bracket
362, the other end connects moving contact 33.Armature 361 is attracted and rotated by yoke component 37 after coil 7 is powered, and with moving armature branch
Frame 362 rotates, to push pushing plate 363, pushing plate 363 drives moving contact 33 to contact or separate with static contact 31, that is, controls
Magnetic latching relay 3 closes a floodgate or separating brake.As shown in Figure 1, the driving circuit 6 in 7 link control module 2 of coil, driving circuit 6 are given
Coil 7 is powered.Static contact 31 is connected to by static contact terminal plate 32 and connecting terminal 35 with electric line, and moving contact 33 passes through dynamic
Contact terminal plate 34 and connecting terminal are connected to electric line, and with static contact 31 contacting or separate by control moving contact 33 can be with
The control on-off of electric line.In the present embodiment, current detection component 8 includes detection resistance, and detection resistance is connected to dynamic
On contact terminal plate 34, detection resistance by conducting wire (not shown) be connected to current detection circuit 9 as shown in Figure 1 and
The current signal that feed circuit 14 will test flow through magnetic latching relay 3 is exported to current detection circuit 9 and feedback electricity
Road 14.It is understood that current detection component 8 can also use current transformer, it is dynamic by the way that current transformer to be set in
The acquisition of current signal is realized on contact terminal plate 34 or static contact terminal plate 32.
As shown in figure 3, the shell mechanism of the control module 2 is mould similar with the shell mechanism of magnetic latching relay 3
Numberization structure, control module 2 are installed in control module shell 20.
As shown in figure 4, the shell 30 of the control module shell 20 of control module 2 and magnetic latching relay 3 passes through rivet riveting
It is connected together.
As shown in figure 5, for the first embodiment of the driving circuit 6 of control module 2 in the utility model switching device
Circuit diagram, in the present embodiment, the coil of magnetic latching relay 3 use unicoil, including coil L1, driving circuit packet
Include resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, triode Q1, triode Q2,
Triode Q3, triode Q4, triode Q5, triode Q6, the one end resistance R1 connect power supply, and the resistance R1 other end is connected respectively to
The one end resistance R5 and triode Q1 collector, triode Q1 base stage connect the one end resistance R3, resistance R3 other end connection control electricity
The first control signal output end P1 on road 5, triode Q1 emitter are separately connected the base stage of the one end resistance R4 and triode Q2, electricity
R4 other end ground connection is hindered, triode Q2 collector connects coil L1 first end A, and triode Q2 emitter is grounded, and resistance R5 is another
End is connect with triode Q5 base stage, and the emitter of triode Q5 connects power supply VCC, and triode Q5 collector connects coil L1 second
B is held, the one end resistance R2 connects power supply VCC, and the resistance R2 other end is connected respectively to the one end resistance R6 and triode Q4 collector, and three
Pole pipe Q4 base stage connects the one end resistance R8, and the resistance R8 other end connects the second control signal output end P2 of control circuit 5, three poles
Pipe Q4 emitter is separately connected the base stage of the one end resistance R7 and triode Q3, resistance R7 other end ground connection, triode Q3 collector
Coil L1 second end B, triode Q3 emitter ground connection are connected, the resistance R6 other end is connect with triode Q6 base stage, triode Q6
Emitter connect power supply VCC, triode Q6 collector connect coil L1 first end A.Driving circuit 6 is by control circuit 5 first
Control signal output P1 and second control signal output end P2 issues control signal, and second control signal output end P2 is high electricity
Usually there is forward current in coil L1, has reverse current in coil L1 when first control signal output end P1 is high level.When
Two control signal output P2 are high level, when first control signal output end P1 is low level, triode Q3, Q4, Q6 conducting,
The turn-on time of triode Q3, Q4, Q6 are preferably greater than 200ms, and triode Q1, Q2, Q5 end, the electricity of flowing through coil L1
Stream direction is power supply VCC-triode Q6-coil L1 first end-coil L1 second end-triode Q3-ground, relay line
After circle obtains pulse signal, relay set.When second control signal output end P2 is low level, first control signal output end
When P1 is high level, triode Q1, Q2, Q5 conducting, the turn-on time of triode Q1, Q2, Q5 are preferably greater than 200ms, and
Triode Q3, Q4, Q5 cut-off, the current direction of flowing through coil L1 are power supply VCC-triode Q5-coil L1 second end-line
L1 first end-triode Q2-ground is enclosed, after relay coil obtains pulse signal, relay resets.When second control signal is defeated
Outlet P2 is low level, and when first control signal output end P1 is low level, triode all ends, coil L1 no current.
As shown in fig. 6, being the second embodiment of the driving circuit 6 of control module 2 in the utility model switching device
Circuit diagram, in the present embodiment, the coil of magnetic latching relay 3 uses twin coil, including coil L2 and line
L3 is enclosed, driving circuit 6 includes resistance R9, resistance R10, triode Q7, triode Q8, and the one end coil L2 connects power supply, coil L2
Other end connecting triode Q7 collector, triode Q7 base stage connect the one end resistance R9, and the resistance R9 other end connects control circuit
First control signal output end P1, triode Q9 emitter ground connection, the one end coil L3 connect power supply, coil L3 other end connection three
Pole pipe Q8 collector, triode Q8 base stage connect the one end resistance R10, and the resistance R10 other end connects the control letter of control circuit second
Number output end P2, triode Q8 emitter ground connection.Its coil L2 is resetting coil, and coil L3 is set coil.Control circuit
First control signal output end P1 and second control signal output end P2 issues control signal, and second control signal output end is height
There is electric current when level in coil L3, has electric current in coil L2 when first control signal output end position high level.Specifically, when second
Control signal output P2 is high level, when first control signal output end P1 is low level, triode Q8 conducting, and triode Q8
Turn-on time be preferably greater than 200ms, triode Q7 cut-off, current direction is power supply VCC-coil L3-triode
Q8-ground.When second control signal output end P2 is low level, and first control signal output end P1 is high level, triode Q7
Conducting, the turn-on time of triode Q7 are preferably greater than 200ms, triode Q8 cut-off, and current direction is power supply VCC-coil
L2-triode Q7-ground.When second control signal output end P2 is low level, first control signal output end P1 is low level
When, triode all ends, the equal no current of coil.
The electric energy meter of the utility model embodiment as shown in Figure 1 takes control system, and control method is to the electric energy meter
Take control system electrification, after powering on, control module 2 receives the control signal from electric energy meter 1, and detects magnetic latching relay 3
The phases line voltage of 3 inlet wire side of opening and closing state and magnetic latching relay is to judge whether there is electricity with electric line.Specifically, it controls
Module 2 receives the control signal from electric energy meter 1 by control signal receiving circuit 4, and control signal is arrearage signal or continues to pay dues
Signal, control signal receiving circuit 4 output signal to control circuit 5, control circuit 5 after receiving the control signal of electric energy meter 1
Driving circuit 6 is outputed signal to after carrying out processing operation to the signal received, driving circuit 6 controls magnetic latching relay 3
Divide-shut brake movement.Specifically, control module 2 can also be judged by the signal that control circuit 5 and current detection circuit 9 detect
Whether overloaded with electric line or short-circuit, and transmission driving signal to driving circuit 5 controls magnetic when overload or short circuit occur for judgement
3 separating brake of guard relay, to realize to the overload and short-circuit protection with electric line.Specifically, the electric current inspection in control module 2
Slowdown monitoring circuit 9 obtains the current signal that current detection component 8 acquires, and control circuit 5 is outputed signal to after current signal is handled,
If the collected current signal of current detection component 8 is more than predetermined value, judge that magnetic latching relay 3 is in overload or short-circuit shape
State, and relay separating brake is controlled after judging electricity consumption circuit overload or short circuit；If the collected current signal of current detection component 8
Lower than predetermined value, then judge that magnetic latching relay 3 is in normal operating conditions.Specifically, control module 2 passes through control circuit 5
And the detection of power failure detection circuit 11, judge the phases line voltage of 3 phase line side of magnetic latching relay, and defeated after voltage signal is handled
Signal to control circuit 5, control circuit 5 judges whether there is electricity with electric line with this out, if judgement electric line is kept without electricity
3 opening and closing state of magnetic latching relay is constant, if judgement electric line has electricity, control circuit 5 is believed according to the control of electric energy meter 1
Number 3 divide-shut brake of control magnetic latching relay.Specifically, the feed circuit 14 in control module 2 is connected to electric energy meter 1 and magnetic is kept
Between relay 3, the input terminal of feed circuit 14 will be at voltage signal after obtaining voltage of the magnetic latching relay for holding
Manage and output signal to electric energy meter 1, electric energy meter 1 with this judge magnetic latching relay 3 opening and closing state whether with control signal
Matching, if the voltage signal got is more than predetermined value, judges that magnetic is protected when the control signal of electric energy meter 1 is arrearage signal
It holds relay 3 and is in "on" position, electric energy meter 1 is alarmed；When the control signal of electric energy meter 1 is to continue to pay dues signal, if get
Voltage signal is lower than predetermined value, then judges that magnetic latching relay 3 is in gate-dividing state, electric energy meter alarm.In addition, feed circuit 14
Also in succession to control circuit 5, the feed circuit 14 acquires the voltage signal for flowing through 3 terminal block end of magnetic latching relay, and
Control circuit 5 will be outputed signal to after voltage signal processing, control circuit 5 judges the division of magnetic latching relay 3 with this
Lock state.In addition, when user selects switch 12 to select manual operation mode by manual/auto operation mode, control module 2
In control circuit 53 divide-shut brake of magnetic latching relay is controlled to the operation of hand push button 13 according to user；When user passes through hand
When dynamic/automatic operation mode selection selection automatic operation mode of switch 13, control module 2 is according to the control signal control of electric energy meter 1
3 divide-shut brake of magnetic latching relay processed.Specifically, 5 quilt of control circuit when controlling signal is arrearage signal, in control module 2
Limitation controls 3 divide-shut brake of magnetic latching relay to the operation of hand push button 13 according to user.In addition, condition indication circuit 10 indicates
The opening and closing state of magnetic latching relay 3, after the state of magnetic latching relay 3 changes, condition indication circuit 10 can be timely
Indicate the opening and closing state after magnetic latching relay 3 changes.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although the terms such as electric energy meter, control module, magnetic latching relay are used more herein, use is not precluded
A possibility that other terms.The use of these terms is merely for the convenience of describing and explaining the nature of the invention；?
It is contrary to the spirit of the present invention that they, which are construed to any additional limitation all,.
Claims (8)
1. a kind of switching device, it is characterised in that: the switching device includes control module and several magnetic latching relays, institute
State control module for receive control signal and control magnetic latching relay divide-shut brake, the control module include control circuit,
For receiving control signal receiving circuit, the driving circuit for driving magnetic latching relay to act, electric current inspection of control signal
Slowdown monitoring circuit and power failure detection circuit are provided with current detection component, current detection circuit connection in the magnetic latching relay
Between current detection component and control circuit, power failure detection circuit is used to detect the phase line electricity of magnetic latching relay inlet wire side
It presses and the voltage signal that will test is exported to control circuit, magnetic latching relay connection electric line and control electric line
On-off.
2. switching device according to claim 1, which is characterized in that the current detection component includes detection resistance or electricity
Current transformer, control circuit carry out operation according to detection resistance or the collected voltage/current signals of current transformer and judge
Whether overloaded with electric line or short-circuit.
3. switching device according to claim 1, it is characterized in that the control module further includes condition indication circuit, state
Indicating circuit connection control circuit and the opening and closing state for being used to indicate magnetic latching relay.
4. switching device according to claim 1, which is characterized in that the control module further includes manual/auto operation
Mode selection switch and hand push button, manual/auto operation mode selection switch connect control circuit with hand push button, work as user
When selecting switch selection automatic operation mode by manual/auto operation mode, control circuit is according to the control signal received
Control magnetic latching relay divide-shut brake；When user is by manual/auto operation mode selection switch selection manual operation mode,
User can operate hand push button, and control circuit controls magnetic latching relay divide-shut brake to the operation of hand push button according to user.
5. switching device according to claim 4, which is characterized in that when controlling signal is predetermined value, control circuit quilt
Limitation controls magnetic latching relay divide-shut brake to the operation of hand push button according to user.
6. switching device according to claim 1, which is characterized in that the control module and the magnetic latching relay are equal
The shell of shell with unit construction, control module and magnetic latching relay is riveted together.
7. a kind of electric energy meter takes control system, including switching device as claimed in any one of claims 1 to 6, it is characterised in that: described
Switching device connects an electric energy meter, and switching device receives the control signal from electric energy meter and kept according to control signal control magnetic
Relay divide-shut brake.
8. electric energy meter according to claim 7 takes control system, which is characterized in that the control module of the switching device is also wrapped
Include feed circuit, the terminal block end of the input terminal connection magnetic latching relay of the feed circuit, output end connection control electricity
Road and electric energy meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821378679.8U CN209148750U (en) | 2018-08-24 | 2018-08-24 | Switching device, electric energy meter take control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821378679.8U CN209148750U (en) | 2018-08-24 | 2018-08-24 | Switching device, electric energy meter take control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342794A (en) * | 2018-08-24 | 2019-02-15 | 浙江正泰电器股份有限公司 | Switching device, electric energy meter take control system and its control method |
| CN110288819A (en) * | 2019-07-31 | 2019-09-27 | 安徽匠桥电子信息有限公司 | A kind of intelligent electric meter system based on Zigbee network |
| CN110727235A (en) * | 2019-10-15 | 2020-01-24 | 紫光云(南京)数字技术有限公司 | Mechanical electronic composite controller |
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2018
- 2018-08-24 CN CN201821378679.8U patent/CN209148750U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342794A (en) * | 2018-08-24 | 2019-02-15 | 浙江正泰电器股份有限公司 | Switching device, electric energy meter take control system and its control method |
| CN110288819A (en) * | 2019-07-31 | 2019-09-27 | 安徽匠桥电子信息有限公司 | A kind of intelligent electric meter system based on Zigbee network |
| CN110727235A (en) * | 2019-10-15 | 2020-01-24 | 紫光云(南京)数字技术有限公司 | Mechanical electronic composite controller |
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Assignee: NOARK ELECTRICS (SHANGHAI) Co.,Ltd. Assignor: Zhejiang Chint Electrics Co.,Ltd. Contract record no.: X2020330000023 Denomination of utility model: Switch device, electric energy meter fee control system and control method thereof Granted publication date: 20190723 License type: Common License Record date: 20200426 |