CN207541466U - A kind of circuit that can effectively avoid electric network power-fail malfunction - Google Patents
A kind of circuit that can effectively avoid electric network power-fail malfunction Download PDFInfo
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- CN207541466U CN207541466U CN201721798935.4U CN201721798935U CN207541466U CN 207541466 U CN207541466 U CN 207541466U CN 201721798935 U CN201721798935 U CN 201721798935U CN 207541466 U CN207541466 U CN 207541466U
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Abstract
The utility model provides a kind of circuit that can effectively avoid electric network power-fail malfunction, it includes MCU, the MCU respectively with for detect ammeter control signal control signal detection module, for detecting the connection of the motor activation point detection module of motor activation point, and the control circuit is additionally provided with the power module for providing power supply, the control circuit is additionally provided with the energy consumption module for consuming the electric energy that power module stores, the energy consumption module is connect respectively with the MCU and power module, the utility model passes through the module that consumes energy, system can effectively evade the influence of grid power blackout failure generation, prevent malfunction.
Description
Technical field
The utility model is related to the external breaker technical fields of electric energy meter, and in particular to one kind can effectively avoid electric network power-fail
The circuit of malfunction.
Background technology
According to the intelligentized demand of China's supply network, State Grid Corporation of China requires breaker to realize supply network intelligence
Change, it is desirable that remote control can be carried out in end user location and carry out the functions such as the functions such as divide-shut brake and pre-payment, and put into effect
Relevant criterion, such as《The external on-load switch technical specification of electric energy meter》.The specification provides that the external breaker of electric energy meter is encountering electricity
It when net has a power failure, should not malfunction, i.e., breaker should keep the state before power down generation.But in grid power blackout, control
Signal intensity form is identical with the signal form of arrearage signal, is easy to cause system mistake identification；And during grid power blackout, circuit system
The energy of the filter capacitor remaining of system is again relatively more.Two factors combine, and easily malfunction.
At present many product all to this kind the occurrence of leave things to chance, such as be configured smaller filter capacitor or
Malfuncton probability etc. is reduced using the time difference, but above method all can not really avoid the occurrence of this kind.
Utility model content
For the deficiency more than solving, the utility model provides a kind of electricity that can effectively avoid electric network power-fail malfunction
Road.
The utility model provides a kind of circuit that can effectively avoid electric network power-fail malfunction, including MCU, the MCU points
Not with for detect the control signal of ammeter control signal detection module, for detect the motor of motor activation point driving position
Detection module connection is put, and the control circuit is additionally provided with the power module for providing power supply, the control circuit is additionally provided with
For consuming the energy consumption module of the electric energy of power module storage, the energy consumption module connects respectively with the MCU and power module
It connects.
The energy consumption module includes triode Q1, and the collector pull-up resistor R3 of the triode is followed by power supply VCC_9, and three
Emitter the ground connection GND, the base series resistor R5 of triode Q1 of pole pipe are followed by control terminal the Shut down, triode Q1 of MCU
Base stage and emitter between parallel resistance R8.
The motor activation point detection module includes several microswitches, the actuator being linked with the shaft of motor
Coordinate with microswitch and realize position detection.
The collector that control signal detection module includes optocoupler U4, the optocoupler U4 meets power supply VCC_5, the optocoupler U4's
Emitter passes sequentially through the signal detection end for being followed by MCU of capacitance C10 and resistance R11 ground connection, the anode series union II of optocoupler U4
Pole pipe D12 is followed by the port CTR being connect with ammeter, and the cathode of optocoupler U4 is sequentially connected in series resistance R19 and resistance R17 and connects alternating current N lines.
Parallel diode D10, capacitance C8 and capacitance C21 successively between the anode and cathode of the optocoupler U4.
The power module includes Switching Power Supply and regulator circuit.
The Switching Power Supply includes sequentially connected rectification circuit, input energy storage filter circuit, power supply chip, high frequency transformation
Device and output energy storage filter circuit.
For the utility model by the module that consumes energy, system can effectively evade the influence of grid power blackout failure generation, prevent malfunction
Work occurs.
Description of the drawings
Fig. 1 is the logic diagram of the utility model.
The circuit diagram of Fig. 2 signal detection modules in order to control.
Fig. 3 is the circuit diagram of MCU.
Fig. 4 is the circuit diagram of motor activation point detection module.
Fig. 5 is the circuit diagram of energy consumption module.
Fig. 6 is the circuit diagram of motor-drive circuit.
Fig. 7 is the circuit diagram of power module.
Fig. 8, Fig. 9 and Figure 10 are the partial schematic diagram of Fig. 7.
Specific embodiment
The utility model embodiment is described further below in conjunction with the accompanying drawings：
As shown in figure to Figure 10, the utility model discloses it is a kind of can effectively avoid electric network power-fail malfunction circuit,
Including MCU1, the MCU1 respectively with for detect the control signal of ammeter control signal detection module 2, for detecting motor
The motor activation point detection module 4 of activation point connects, and the control circuit is additionally provided with the power supply mould for providing power supply
Block 3, the control circuit are additionally provided with the energy consumption module 5 for consuming the electric energy that power module stores, and the energy consumption module 5 is distinguished
It is connect with the MCU and power module.Wherein MCU uses 16F1503 chips, preferably, the power supply termination of energy consumption module
The output terminal of power module, for consuming the energy storage of Switching Power Supply；Energy consumption module is controlled by MCU, and the MCU is driven by motor
Dynamic circuit is connect, and control motor action with motor.
The energy consumption module includes triode Q1, and the collector pull-up resistor R3 of the triode is followed by power supply VCC_9, and three
Emitter the ground connection GND, the base series resistor R5 of triode Q1 of pole pipe are followed by control terminal the Shut down, triode Q1 of MCU
Base stage and emitter between parallel resistance R8.The low and high level of MCU conveyings acts on the base stage of triode, determines triode
Conducting, it is achieved thereby that consume energy module open and close, and can according to the period of low and high level come realize energy consumption
The duration of module.
When MCU recognizes control semaphore request separating brake, driving energy consumption module carries out the energy expenditure operation of 2S first；Such as
Fruit sub-gate signal is generated due to grid power blackout, then the energy expenditure of 2S enough expend fall all capacitive energy storages, then by
In without electrical energy drive, whole system is stopped, so as to avoid malfunction；If practical sub-gate signal, then be
System has enough energy for consuming, and after energy consumption, product performs sub-switching operation.
The motor activation point detection module includes several microswitches, the actuator being linked with the shaft of motor
Coordinate with microswitch and realize position detection.Motor band fixed handle division operation, and the actuator being linked with handle, then can
Different microswitches is triggered in separating brake and closing position, so as to fulfill position detection.
The collector that control signal detection module includes optocoupler U4, the optocoupler U4 meets power supply VCC_5, the optocoupler U4's
Emitter passes sequentially through the signal detection end for being followed by MCU of capacitance C10 and resistance R11 ground connection, the anode series union II of optocoupler U4
Pole pipe D12 is followed by the port CTR being connect with ammeter, and the cathode of optocoupler U4 is sequentially connected in series resistance R19 and resistance R17 and connects alternating current N lines,
Control signal detection module is used to obtain the divide-shut brake signal of ammeter transmission, and be converted by control signal detection module can quilt
Whether the signal of MCU identifications, MCU simultaneously open energy consumption module according to the signal deciding.
Parallel diode D10, capacitance C8 and capacitance C21 successively between the anode and cathode of the optocoupler U4 play optocoupler
To the effect of protection.
It connects between the anode of the optocoupler U4 and diode D12 light emitting diode D9, the capacitance C8 and capacitance C21 points
Not Wei Yu light emitting diode D9 both sides.
The power module includes Switching Power Supply and regulator circuit.The Switching Power Supply includes sequentially connected rectified current
Road, input energy storage filter circuit, power supply chip, high frequency transformer and output energy storage filter circuit, energy consumption module then with output
Energy storage filter circuit connects, and for consuming the electric energy of output energy storage filter circuit storage, wherein power supply chip uses TNY286DG,
Its circuit is formed referring to Fig. 7 to Figure 10.
Embodiment is not construed as the limitation to the utility model, but changing of being made of any spirit based on the utility model
Into should all be within the protection scope of the utility model.
Claims (7)
1. a kind of circuit that can effectively avoid electric network power-fail malfunction, it is characterised in that：It includes MCU, the MCU respectively with
In detection ammeter control signal control signal detection module, for detect the motor activation point of motor activation point detect
Module connects, and the control circuit is additionally provided with the power module for providing power supply, and the control circuit is additionally provided with to disappear
The energy consumption module of the electric energy of power consumption source module storage, the energy consumption module are connect respectively with the MCU and power module.
2. a kind of circuit that can effectively avoid electric network power-fail malfunction according to claim 1, it is characterised in that：The consumption
Energy module includes triode Q1, and the collector pull-up resistor R3 of the triode is followed by power supply VCC_9, and the emitter of triode connects
The base series resistor R5 of ground GND, triode Q1 are followed by the base stage and emitter of control terminal the Shut down, triode Q1 of MCU
Between parallel resistance R8.
3. a kind of circuit that can effectively avoid electric network power-fail malfunction according to claim 1, it is characterised in that：The electricity
Machine activation point detection module includes several microswitches, and the actuator being linked with the shaft of motor coordinates with microswitch
Realize position detection.
4. a kind of circuit that can effectively avoid electric network power-fail malfunction according to claim 1, it is characterised in that：Control letter
The collector that number detection module includes optocoupler U4, the optocoupler U4 meets power supply VCC_5, and the emitter of the optocoupler U4 passes sequentially through
Capacitance C10 and the signal detection end for being followed by MCU of resistance R11 ground connection, the anode series diode D12 of optocoupler U4 are followed by and electricity
The port CTR of table connection, the cathode of optocoupler U4 are sequentially connected in series resistance R19 and resistance R17 and connect alternating current N lines.
5. a kind of circuit that can effectively avoid electric network power-fail malfunction according to claim 4, it is characterised in that：The light
Parallel diode D10, capacitance C8 and capacitance C21 successively between the anode and cathode of coupling U4.
6. a kind of circuit that can effectively avoid electric network power-fail malfunction according to claim 1, it is characterised in that：The electricity
Source module includes Switching Power Supply and regulator circuit.
7. a kind of circuit that can effectively avoid electric network power-fail malfunction according to claim 6, it is characterised in that：It is described to open
Powered-down source includes sequentially connected rectification circuit, input energy storage filter circuit, power supply chip, high frequency transformer and output energy storage
Filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721798935.4U CN207541466U (en) | 2017-12-21 | 2017-12-21 | A kind of circuit that can effectively avoid electric network power-fail malfunction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721798935.4U CN207541466U (en) | 2017-12-21 | 2017-12-21 | A kind of circuit that can effectively avoid electric network power-fail malfunction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207541466U true CN207541466U (en) | 2018-06-26 |
Family
ID=62618968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721798935.4U Active CN207541466U (en) | 2017-12-21 | 2017-12-21 | A kind of circuit that can effectively avoid electric network power-fail malfunction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207541466U (en) |
-
2017
- 2017-12-21 CN CN201721798935.4U patent/CN207541466U/en active Active
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