CN109061264A - Electric energy meter takes the control method of control system - Google Patents
Electric energy meter takes the control method of control system Download PDFInfo
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- CN109061264A CN109061264A CN201810974478.2A CN201810974478A CN109061264A CN 109061264 A CN109061264 A CN 109061264A CN 201810974478 A CN201810974478 A CN 201810974478A CN 109061264 A CN109061264 A CN 109061264A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/56—Special tariff meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/25—Arrangements for indicating or signalling faults
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Abstract
The present invention relates to the control methods that a kind of electric energy meter takes control system, wherein it includes electric energy meter, control module and magnetic latching relay that electric energy meter, which takes control system,.The control method includes: to the system electrification, and control module receives the control signal from electric energy meter, and detects the opening and closing state of magnetic latching relay and the phases line voltage of magnetic latching relay inlet wire side；When the control signal that control module receives is arrearage signal, control module controls magnetic latching relay separating brake, and electric line is used in disconnection；When the control signal that control module receives is to continue to pay dues signal, control module controls magnetic latching relay and closes a floodgate, and closure uses electric line.
Description
Technical field
The present invention relates to the control methods that a kind of electric energy meter takes control 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, cause electric energy meter expense control system power dissipation it is big.
Summary of the invention
The present invention mainly solves above-mentioned technical problem, provides a kind of control method of electric energy meter expense control system,
Middle electric energy meter takes in control system using magnetic latching relay, can save the energy.
Above-mentioned technical problem of the invention is mainly to be addressed by following technical proposals: a kind of electric energy meter expense control system
The control method of system, the electric energy meter expense control system includes electric energy meter, control module and magnetic latching relay, the control method
It include: to the system electrification, control module receives the control signal from electric energy meter；When the control letter that control module receives
Number be arrearage signal when, control module control magnetic latching relay separating brake, disconnection use electric line；When the control that control module receives
Signal processed is when continuing to pay dues signal, and control module controls magnetic latching relay and closes a floodgate, and closure uses electric line.
Preferably, the control module includes control circuit and current detection circuit, and the magnetic latching relay includes electricity
Detection components are flowed, the control method further includes the current signal that the current detection component acquisition flows through magnetic latching relay,
And export the current signal to current detection circuit, control circuit receives the signal from current detection circuit, and accordingly
Whether judgement is overloaded with electric line or short circuit, and magnetic latching relay separating brake is controlled after judging electricity consumption circuit overload or short circuit.
Preferably, the control module includes control circuit and power failure detection circuit, and the control method further includes described
Power failure detection circuit detects the phases line voltage of magnetic latching relay inlet wire side, and control is outputed signal to after voltage signal is handled
Circuit processed, control circuit judge whether there is electricity with electric line with this, if keeping point of magnetic latching relay without electricity with electric line
"on" position is constant, if having electricity with electric line, control circuit controls magnetic latching relay point according to the control signal of electric energy meter
It closes a floodgate.
Preferably, the control module includes control circuit, control signal receiving circuit and driving circuit, the controlling party
In method, the control signal receiving circuit of control module receives the control signal from electric energy meter, and outputs signal to control circuit,
Control circuit outputs signal to driving circuit after carrying out operation to the signal received, and driving circuit controls magnetic latching relay
Divide-shut brake movement.
Preferably, the control module further includes the feed circuit being connected between electric energy meter and magnetic latching relay, institute
It states control method and further includes that the feed circuit obtains terminal block terminal voltage signal, and output signal after voltage signal is handled
To electric energy meter, electric energy meter with this judge magnetic latching relay opening and closing state whether with control Signal Matching, when electric energy meter
When control signal is arrearage signal, if the voltage signal got is more than predetermined value, judges that magnetic latching relay is in and close a floodgate
State, electric energy meter alarm；When the control signal of electric energy meter is to continue to pay dues signal, if the voltage signal got is lower than predetermined value,
Then judge that magnetic latching relay is in gate-dividing state, electric energy meter alarm.
Further, the feed circuit is additionally coupled to control circuit, and the control method further includes the feedback electricity
Road obtains the voltage signal at terminal block end, and exports after voltage signal is handled to control circuit, and control circuit is judged with this
The opening and closing state of magnetic latching relay.
Preferably, wherein the control module includes that manual/auto operation mode selects switch and hand push button, described
Control method further comprises: when user is by manual/auto operation mode selection switch selection manual operation mode, control
Module controls magnetic latching relay divide-shut brake to the operation of hand push button according to user；When user passes through manual/auto operation mould
When formula selection switch selection automatic operation mode, control module controls magnetic latching relay division according to the control signal of electric energy meter
Lock.
Further, wherein when controlling signal is arrearage signal, control module is limited according to user to pressing manually
The operation of button controls magnetic latching relay divide-shut brake.
Further, the control module includes control circuit, the manual/auto operation mode selection switch and hand
Dynamic button is connected to control circuit.
Preferably, the control module includes control circuit and the condition indication circuit for being connected to control circuit, controls mould
The control circuit of block receives the control signal from electric energy meter and according to the divide-shut brake of control signal control magnetic latching relay, institute
State the opening and closing state that control method further includes condition indication circuit instruction magnetic latching relay.
Therefore, the invention has the advantages that compared to the prior art, electric energy meter provided by the invention takes the controlling party of control system
Method controls magnetic latching relay divide-shut brake by control module, wherein only needing to supply arteries and veins to the coil in magnetic latching relay
It rushes signal i.e. and can control its divide-shut brake, so as to save the energy.
Detailed description of the invention
Fig. 1 is the schematic diagram that electric energy meter of the present invention takes control system embodiment；
Fig. 2 is the schematic diagram of internal structure of magnetic latching relay in switch module of the present invention；
Fig. 3 is the schematic diagram of internal structure of control module in switch module of the present invention；
Fig. 4 is the structural schematic diagram that control module and magnetic latching relay are riveted together in switch module of the present invention；
Fig. 5 is the circuit diagram of the first embodiment of the driving circuit of control module in switch module of the present invention；
Fig. 6 is the circuit diagram of the second embodiment of the driving circuit of control module in switch module of the present invention.
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:
Below in conjunction with the embodiment that attached drawing 1 to 6 provides, the controlling party of electric energy meter expense control system of the present invention is further illustrated
The specific embodiment of method.The control method of electric energy meter expense control system of the invention is not limited to the following description.
As shown in Figure 1, the electric energy meter expense control system of the embodiment of the present invention includes electric energy meter 1 and switching device, switching device
Including control module 2 and magnetic latching relay 3, wherein the quantity of magnetic latching relay 3 can be one or more.Magnetic keep after
Electric appliance 3 is connected to in electric line, can control use by combined floodgate to sound contact in magnetic latching relay 3 or sub-switching operation
The on-off of electric line.Control module 2 is connected between electric energy meter 1 and magnetic latching relay 3, and control module 2, which receives, comes from electric energy
The control signal of table 1, and 3 divide-shut brake of magnetic latching relay is controlled according to control signal.Wherein control signal can be arrearage letter
Number or the signal that continues to pay dues, when control signal be arrearage signal when, control module 2 control 3 separating brake of magnetic latching relay, disconnection use electric wire
Road；When controlling signal is to continue to pay dues signal, control module 2 controls magnetic latching relay 3 and closes a floodgate, and closure uses electric line.Control mould
Block 2 includes control circuit 5, control signal receiving circuit 4, driving circuit 6, wherein the control signal in control module 2 receives
Circuit 4 outputs signal to control circuit 5 after receiving control signal from electric energy meter 1, control circuit 5 to the signal received at
Driving circuit 6 is outputed signal to after reason, operation, driving circuit 6 controls the divide-shut brake movement of magnetic latching relay 3.Control circuit 5
Including power circuit and microcontroller, power circuit provides 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 keeps relay for the schematic diagram of internal structure of magnetic latching relay 3 in switching device of the present invention
The shell mechanism of device 3 is unit construction identical with housing of mini-type circuit breaker structure in the art.Magnetic latching relay 3 includes
Shell 30, static contact 31, static contact terminal plate 32, moving contact 33, moving contact terminal plate 34, connecting terminal 35, armature component 36,
Yoke component 37, coil 7 and current detection component 8.Wherein, shell 30 is unit construction, and the shell 30 includes left and right sides
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) divide on the inside of the left side plate of shell
It is not provided with a connecting terminal 35, the intermediate position of lower side panel forms a recessed portion to recess on the inside of shell 30, by this
Shell 30 can be fixed in outer rail by recessed portion, the intermediate position of epipleural support or oppose the direction from lower side panel protrusion.It is quiet
Contact 31, moving contact 33, armature component 36, yoke component 37 and coil 7 are arranged close to after epipleural outwardly protrudes in shell
In the accommodation space that 30 insides are formed.Yoke component 37 include across coil 7 iron core (not shown) and be located at line
The upper yoke 371 and lower yoke 372 of 7 upper and lower ends are enclosed, upper yoke 371 and lower yoke 372 are contacted or are integrally formed with iron core.Rank
Iron component 36 includes armature 361, armature bracket 362 and pushing plate 363, and armature 361 is installed in the left and right two of armature bracket 362
Side, 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 drives armature bracket 362
Rotation, to push pushing plate 363, pushing plate 363 drives moving contact 33 to contact or separate with static contact 31, i.e. control magnetic is kept
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 gives coil 7
Power supply.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 moving contact
Terminal plate 34 and connecting terminal are connected to electric line, and contacting or separate with static contact 31 by controlling moving contact 33 can control
With the on-off of electric line.In the present embodiment, current detection component 8 includes detection resistance, and detection resistance is connected to moving contact
On terminal plate 34, detection resistance is connected to current detection circuit 9 as shown in Figure 1 and feedback by conducting wire (not shown)
The current signal that circuit 14 will test flow through magnetic latching relay 3 is exported to current detection circuit 9 and feed circuit 14.
It is understood that current detection component 8 can also use current transformer, connect by the way that current transformer is set in moving contact
The acquisition of current signal is realized on line 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 shell 20.
As shown in figure 4, the shell 20 of control module 2 and the shell 30 of magnetic latching relay 3 pass through together with rivet.
As shown in figure 5, for the circuit of the first embodiment of the driving circuit 6 of control module 2 in switching device of the present invention
Schematic diagram, in the present embodiment, the coil of magnetic latching relay 3 use unicoil, including coil L1, and driving circuit includes electricity
Hinder R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, triode Q1, triode Q2, three poles
Pipe 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 resistance
The one end R5 and triode Q1 collector, triode Q1 base stage connect the one end resistance R3, and the resistance R3 other end connects control circuit 5
First control signal output end P1, triode Q1 emitter are separately connected the base stage of the one end resistance R4 and triode Q2, resistance R4
The other end ground connection, triode Q2 collector connect coil L1 first end A, triode Q2 emitter ground connection, the resistance R5 other end with
The connection of triode Q5 base stage, the emitter of triode Q5 connect power supply VCC, and triode Q5 collector connects coil L1 second end B,
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, triode
Q4 base stage connects the one end resistance R8, and the resistance R8 other end connects second control signal the output end P2, triode Q4 of control circuit 5
Emitter is separately connected the base stage of the one end resistance R7 and triode Q3, resistance R7 other end ground connection, the connection of triode Q3 collector
Coil L1 second end B, triode Q3 emitter ground connection, the resistance R6 other end are connect with triode Q6 base stage, the hair of triode Q6
Emitter-base bandgap grading connects power supply VCC, and triode Q6 collector connects coil L1 first end A.Driving circuit 6 is controlled by control circuit 5 first
Signal output end P1 and second control signal output end P2 issues control signal, when second control signal output end P2 is high level
There is forward current in coil L1, has reverse current in coil L1 when first control signal output end P1 is high level.When the second control
Signal output end P2 processed is high level, when first control signal output end P1 is low level, triode Q3, Q4, Q6 conducting, and three poles
The turn-on time of pipe Q3, Q4, Q6 are preferably greater than 200ms, and triode Q1, Q2, Q5 end, the electric current side of flowing through coil L1
To for power supply VCC-triode Q6-coil L1 first end-coil L1 second end-triode Q3-ground, relay coil is obtained
After taking pulse signal, relay set.When second control signal output end P2 is low level, first control signal output end P1 is
When high level, triode Q1, Q2, Q5 conducting, the turn-on time of triode Q1, Q2, Q5 are preferably greater than 200ms, and three poles
Pipe Q3, Q4, Q5 cut-off, the current direction of flowing through coil L1 are power supply VCC-triode Q5-coil L1 second end-coil L1
First end-triode Q2-ground, after relay coil obtains pulse signal, relay resets.When second control signal output end
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 electricity of the second embodiment of the driving circuit 6 of control module 2 in switching device of the present invention
Road schematic diagram, in the present embodiment, the coil of magnetic latching relay 3 use twin coil, including coil L2 and coil L3,
Driving circuit 6 includes resistance R9, resistance R10, triode Q7, triode Q8, and the one end coil L2 connects power supply, the 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 and controls
Signal output end P1 processed, triode Q9 emitter ground connection, the one end coil L3 connects power supply, coil L3 other end connecting triode Q8
Collector, triode Q8 base stage connect the one end resistance R10, and the resistance R10 other end connects the output of control circuit second control signal
Hold P2, triode Q8 emitter ground connection.Its coil L2 is resetting coil, and coil L3 is set coil.Control circuit first is controlled
Signal output end P1 and second control signal output end P2 processed issue control signal, when second control signal output end is high level
There is electric current in coil L3, has electric current in coil L2 when first control signal output end position high level.Specifically, when the second control letter
Number output end P2 is high level, when first control signal output end P1 is low level, triode Q8 conducting, and the conducting of triode Q8
Time is preferably greater than 200ms, triode Q7 cut-off, and current direction is power supply VCC-coil L3-triode Q8-ground.When
Second control signal output end P2 is low level, when first control signal output end P1 is high level, triode Q7 conducting, and three poles
The turn-on time of pipe Q7 is preferably greater than 200ms, triode Q8 cut-off, and current direction is power supply VCC-pole coil L2-tri-
Pipe Q7-ground.When second control signal output end P2 is low level, and first control signal output end P1 is low level, triode
All end, the equal no current of coil.
The electric energy meter of the embodiment of the present invention as shown in Figure 1 takes control system, and control method is to take control to the electric energy meter
System electrification, after powering on, control module 2 receives the control signal from electric energy meter 1, and detects the division of magnetic latching relay 3
The phases line voltage of 3 inlet wire side of lock state and magnetic latching relay is to judge whether there is electricity with electric line.Specifically, control module
2 by control signal receiving circuit 4 receive the control signal from electric energy meter 1, control signal be arrearage signal or the signal that continues to pay dues,
Control signal receiving circuit 4 outputs signal to control circuit 5,5 pairs of control circuit receptions after receiving the control signal of electric energy meter 1
To signal carry out outputing signal to driving circuit 6 after processing operation, driving circuit 6 controls the divide-shut brake of magnetic latching relay 3
Movement.Specifically, the signal judgement electric wire that control module 2 can also be detected by control circuit 5 and current detection circuit 9
Road whether overload or short circuit, and judgement occur overload or short circuit when send driving signal to driving circuit 5 control magnetic keep after
3 separating brake of electric appliance, to realize to the overload and short-circuit protection with electric line.Specifically, the current detection circuit in control module 2
9 obtain the current signal that current detection component 8 acquires, and control circuit 5 is outputed signal to after current signal is handled, if electric current
The collected current signal of detection components 8 is more than predetermined value, then judges that magnetic latching relay 3 is in overload or short-circuit condition, 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 is lower than
Predetermined value then judges that magnetic latching relay 3 is in normal operating conditions.Specifically, control module 2 by control circuit 5 and is broken
The detection of power detection circuit 11 judges the phases line voltage of 3 phase line side of magnetic latching relay, and exports letter after voltage signal is handled
Number to control circuit 5, control circuit 5 judges whether there is electricity with electric line with this, if judgement electric line keeps magnetic to protect without electricity
It is constant to hold 3 opening and closing state of relay, if judgement electric line has an electricity, control circuit 5 is according to the control signal control of electric energy meter 1
3 divide-shut brake of magnetic latching relay processed.Specifically, the feed circuit 14 in control module 2 is connected to electric energy meter 1 and magnetic keeps relay
Between device 3, the input terminal of feed circuit 14 is handled voltage signal simultaneously after obtaining voltage of the magnetic latching relay for end
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,
When the control signal of electric energy meter 1 is arrearage signal, if the voltage signal got is more than predetermined value, judge that magnetic keeps relay
Device 3 is in "on" position, and electric energy meter 1 is alarmed；When the control signal of electric energy meter 1 is to continue to pay dues signal, if the voltage letter got
Number it is lower than predetermined value, then judges that magnetic latching relay 3 be in gate-dividing state, electric energy meter is alarmed.In addition, feed circuit 14 is 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 will be described
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.
In addition, the control when user selects switch 12 to select manual operation mode by manual/auto operation mode, in control module 2
Circuit 5 processed controls 3 divide-shut brake of magnetic latching relay to the operation of hand push button 13 according to user；When user is by manual/auto
When operation mode selects switch 13 to select automatic operation mode, control module 2 controls magnetic according to the control signal of electric energy meter 1 and keeps
3 divide-shut brake of relay.Specifically, when controlling signal is arrearage signal, control circuit 5 in control module 2 by limitation according to
User controls 3 divide-shut brake of magnetic latching relay to the operation of hand push button 13.In addition, condition indication circuit 10 indicate magnetic keep after
The opening and closing state of electric appliance 3, after the state of magnetic latching relay 3 changes, condition indication circuit 10 can indicate that magnetic is protected in time
Hold the opening and closing state after relay 3 changes.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. a kind of electric energy meter takes the control method of control system, the electric energy meter expense control system includes electric energy meter, control module and magnetic
Guard relay, the control method include:
To the system electrification, control module receives the control signal from electric energy meter, and detects the division of magnetic latching relay
The phases line voltage of lock state and magnetic latching relay inlet wire side；
When the control signal that control module receives is arrearage signal, control module controls magnetic latching relay separating brake, disconnects
Use electric line；
When the control signal that control module receives is to continue to pay dues signal, control module controls magnetic latching relay and closes a floodgate, closure
Use electric line.
2. electric energy meter according to claim 1 takes the control method of control system, the control module include control circuit and
Current detection circuit, the magnetic latching relay include current detection component, and the control method further includes the current detecting
Component acquires the current signal for flowing through magnetic latching relay, and the current signal is exported to current detection circuit, control electricity
Road receives the signal from current detection circuit, and whether judgement is overloaded or short circuit with electric line accordingly, and in judgement electric wire
Magnetic latching relay separating brake is controlled after passing by load or short circuit.
3. electric energy meter according to claim 1 takes the control method of control system, the control module include control circuit and
Power failure detection circuit, the control method further include the phase line of power failure detection circuit detection magnetic latching relay inlet wire side
Voltage, and control circuit is outputed signal to after voltage signal is handled, control circuit judges whether there is electricity with electric line with this, if
With electric line without electricity, then keep the opening and closing state of magnetic latching relay constant, if having an electricity with electric line, control circuit according to
The control signal of electric energy meter controls magnetic latching relay divide-shut brake.
4. electric energy meter according to claim 1 takes the control method of control system, the control module includes control circuit, control
Signal receiving circuit processed and driving circuit, in the control method, the control signal receiving circuit of control module is received from electricity
The control signal of energy table, and control circuit is outputed signal to, control circuit is to output signal after the signal progress operation received
To driving circuit, driving circuit controls the divide-shut brake movement of magnetic latching relay.
5. electric energy meter according to claim 1 takes the control method of control system, the control module further includes being connected to electricity
Feed circuit between energy table and magnetic latching relay, the control method further include that the feed circuit obtains terminal block end
Voltage signal, and electric energy meter is outputed signal to after voltage signal is handled, electric energy meter judges the division of magnetic latching relay with this
Lock state whether with control Signal Matching, when the control signal of electric energy meter is arrearage signal, if the voltage signal got is super
Predetermined value is crossed, then judges that magnetic latching relay is in "on" position, electric energy meter alarm；When the control signal of electric energy meter is the letter that continues to pay dues
Number when, if the voltage signal got is lower than predetermined value, judge that magnetic latching relay be in gate-dividing state, electric energy meter is alarmed.
6. electric energy meter according to claim 5 takes the control method of control system, the feed circuit is additionally coupled to control electricity
Road, the control method further include the voltage signal that the feed circuit obtains terminal block end, and after voltage signal is handled
To control circuit, control circuit judges the opening and closing state of magnetic latching relay with this for output.
7. the control method that electric energy meter according to claim 1 takes control system, wherein the control module include manually/
Automatic operation mode selection switch and hand push button, the control method further comprises:
When user is by manual/auto operation mode selection switch selection manual operation mode, control module is according to user couple
The operation of hand push button controls magnetic latching relay divide-shut brake；
When user is by manual/auto operation mode selection switch selection automatic operation mode, control module is according to electric energy meter
Control signal control magnetic latching relay divide-shut brake.
8. the control method that electric energy meter according to claim 7 takes control system, wherein when control signal is arrearage signal
When, control module, which is limited, controls magnetic latching relay divide-shut brake to the operation of hand push button according to user.
9. taking the control method of control system according to electric energy meter described in claim foot 7, the control module includes control circuit,
The manual/auto operation mode selection switch and hand push button are connected to control circuit.
10. electric energy meter according to claim 1 takes the control method of control system, the control module include control circuit and
It is connected to the condition indication circuit of control circuit, the control circuit of control module receives the control signal from electric energy meter and basis
The divide-shut brake of signal control magnetic latching relay is controlled, the control method further includes that condition indication circuit instruction magnetic keeps relay
The opening and closing state of device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810974478.2A CN109061264A (en) | 2018-08-24 | 2018-08-24 | Electric energy meter takes the control method of control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810974478.2A CN109061264A (en) | 2018-08-24 | 2018-08-24 | Electric energy meter takes the control method of control system |
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