CN209373078U - A kind of power sense circuit and electronic equipment - Google Patents
A kind of power sense circuit and electronic equipment Download PDFInfo
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- CN209373078U CN209373078U CN201821858606.9U CN201821858606U CN209373078U CN 209373078 U CN209373078 U CN 209373078U CN 201821858606 U CN201821858606 U CN 201821858606U CN 209373078 U CN209373078 U CN 209373078U
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Abstract
The utility model relates to power detecting technical fields, more particularly to a kind of power sense circuit and electronic equipment.Power sense circuit includes: zero cross detection circuit, for detecting the zero passage dotted state of power module, and generates zero cross signal；Controller, for determining the on off operating mode of power module according to zero cross signal；Power supply circuit, for power module by off-state to on-state during, provide power supply for controller.Therefore, on the one hand, controller analyzes power module unexpected abnormality according to zero cross signal and works in off-state, just control of the subsequent implementation to household electrical appliance.On the other hand, before implementing power module and restoring on-state, power supply circuit is continuously controller and provides power supply, during with before restoring on-state, guarantees that controller can control household electrical appliance.In general, the utility model embodiment can implement control, reliable operation by detecting the on off operating mode of power module.
Description
Technical field
The utility model relates to power detecting technical fields, more particularly to a kind of power sense circuit and electronic equipment.
Background technique
Household electrical appliance are needed to need to assemble the electric apparatus control apparatus such as remote controler, remote controler and household electrical appliance wireless telecommunications, with
The working condition of household electrical appliance is controlled, for example, the starting of control household electrical appliance or closing.
In the implementation of the present invention, at least there is following difference in discovery traditional technology to inventor: once remote controler etc.
The failures such as electric apparatus control apparatus loss, damage, then user is unable to control the working condition of household electrical appliance.
Utility model content
One purpose of the utility model embodiment is intended to provide a kind of power sense circuit and electronic equipment, is able to detect
The on off operating mode of power module implements control.
In order to solve the above technical problems, the utility model embodiment the following technical schemes are provided:
In a first aspect, the utility model embodiment provides a kind of power sense circuit, for detecting the logical of power module
Disconnected state, the power sense circuit include:
Zero cross detection circuit for detecting the zero passage dotted state of the power module, and generates zero cross signal；
Controller is connect with the zero cross detection circuit, for determining the power module according to the zero cross signal
On off operating mode；
Power supply circuit is connect with the controller, for the mistake in the power module by off-state to on-state
Cheng Zhong provides power supply for the controller.
Optionally, the zero cross detection circuit includes:
Sample circuit, for sampling the power supply signal of the power module；
Squaring circuit is connect with the sample circuit and the controller respectively, for the power supply signal is whole
Form square-wave signal.
Optionally, the zero cross detection circuit further includes filter circuit, the filter circuit and the squaring circuit
Connection includes harmonic signal in the square-wave signal for filtering.
Optionally, the sample circuit includes first resistor, second resistance, first diode, first capacitor and optocoupler, institute
First resistor one end is stated for as the first collection terminal for acquiring the power module, described second resistance one end to be used to be used as and adopt
Collect the second collection terminal of the power module, the first resistor other end, the first diode cathode, the first capacitor
One end and optocoupler primary side one end are all connected to first node, the first diode anode, the first capacitor other end,
The optocoupler primary side other end and the second resistance other end are all connected to second node, described optical coupling secondary edges one end with it is described
Squaring circuit connection, the optical coupling secondary edges other end ground connection.
Optionally, the squaring circuit includes 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the second electricity
Hold and PNP type triode, described 3rd resistor one end and described 4th resistance one end are all connected to described optical coupling secondary edges one end, institute
The emitter for stating the 3rd resistor other end and the PNP type triode is all used to be applied external voltage, and the 4th resistance is another
One end is connect with the base stage of the PNP type triode, and described 5th resistance one end and described 6th resistance one end are all connected to institute
The collector of PNP type triode is stated, the 5th resistance other end is connect with second capacitor one end, and the 6th resistance is another
One end and the second capacitor other end are grounded.
Optionally, the sample circuit includes the 7th resistance, the 8th resistance, the second diode and third capacitor, and described the
Seven resistance one end are used for as the collection terminal for acquiring the power module, the 7th resistance other end and the 8th resistance one
End connection, the 8th resistance other end, second diode cathode and third capacitor one end are all whole with the square wave
Shape circuit connection, second diode cathode are all grounded with the third capacitor other end.
Optionally, the squaring circuit includes the 9th resistance, the tenth resistance, the 4th capacitor and NPN type triode, institute
The base stage for stating NPN type triode is connect with third capacitor one end, the emitter ground connection of the NPN type triode, the NPN
The collector of type triode is connect with described 9th resistance one end and described tenth resistance one end, and the 9th resistance other end is used
In being applied external voltage, the tenth resistance other end is connect with described 4th capacitor one end, the 4th capacitor other end
Ground connection.
Optionally, the power supply circuit includes energy-storage travelling wave tube, and the energy-storage travelling wave tube is connect with the controller, in institute
During power module is stated by off-state to on-state, power supply is provided for the controller.
Optionally, the energy-storage travelling wave tube is electrolytic capacitor.
In second aspect, the utility model embodiment provides a kind of electronic equipment, including described in any item power detectings
Circuit.
In the power sense circuit and electronic equipment that each embodiment of the utility model provides, zero cross detection circuit is used for
The zero passage dotted state of power module is detected, and generates zero cross signal；Controller is connect with zero cross detection circuit, for according to zero passage
Signal determines the on off operating mode of power module；Power supply circuit is connect with controller, in power module by off-state to connecing
During logical state, power supply is provided for controller.Therefore, on the one hand, controller analyzes power module according to zero cross signal
Unexpected abnormality and work in off-state, just control of the subsequent implementation to household electrical appliance.On the other hand, implementing power module
Before restoring on-state, power supply circuit is continuously controller and provides power supply, during with before restoring on-state, protects
Card controller can control household electrical appliance.In general, the utility model embodiment can pass through the on-off of detection power module
State implements control, reliable operation.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is that the utility model embodiment provides a kind of schematic block circuit diagram of power sense circuit；
Fig. 2 is the schematic block circuit diagram of zero cross detection circuit in Fig. 1；
Fig. 3 is the electrical block diagram of power module and zero cross detection circuit provided by the embodiment of the utility model；
Fig. 4 is that the circuit structure of power module and zero cross detection circuit that another embodiment of the utility model provides is illustrated
Figure.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this
Utility model is not used to limit the utility model.
Power sense circuit provided by the embodiment of the utility model is used to detect the on off operating mode of power module, can be applied to
The electronic equipment of any proper function, for example, electronic equipment is lamplight component, which includes power sense circuit, LED
Driving power circuit and LED light, power sense circuit are connect with LED drive power circuit, LED drive power circuit and LED light
Connection.When LED drive circuit is worked by normally on-state in abnormal off-state, power sense circuit is detected
LED drive power circuit works in off-state, and then, power sense circuit stops sending control signal to LED light, to disconnect
LED light.
In addition to the power sense circuit that above-described embodiment illustrates can implement the switch control functions to household electrical appliance, one
In a little embodiments, power sense circuit can also control household electrical appliance according to on/off state and implement other control functions.Example
Such as, electronic equipment is lamplight component, and power sense circuit is according to the different tunable opticals of on-off times or toning.Electronic equipment is electricity
Speed and the direction of motor are adjusted according to the difference of on-off times for thermomechanical components, power sense circuit.Electronic equipment is that intelligence is set
Standby, power sense circuit executes binding pairing to smart machine and unbundlings act according to the different of on-off times, reduced with this or
Remove the control of external key and remote controler.
Referring to Fig. 1, Fig. 1 is that the utility model embodiment provides a kind of schematic block circuit diagram of power sense circuit.Such as
Shown in Fig. 1, power sense circuit 100 includes: zero cross detection circuit 11, controller 12 and power supply circuit 13.
Zero cross detection circuit 11 is used to detect the zero passage dotted state of power module 14, and generates zero cross signal.In this implementation
In example, power module 14 uses alternating current, can be the isolated power supply (such as LED drive power) in traditional technology, also may be used
Think the non-isolated power supply (resistance-capacitance depressurization power supply) in traditional technology.When power module 14 is isolated power supply, zero passage detection electricity
The input stage in isolated power supply can be set in the collection point that road 11 acquires the alternating current of power module 14, can also be set to isolation
The output stage of power supply.The alternating current of power module 14 is mains supply.When power module 14 is non-isolated power supply, zero passage detection
The collection point that circuit 11 acquires the alternating current of power module 14 can be set in the filtering end of non-isolated power supply.
In the present embodiment, when the zero passage that power module 14 is continued working in on-state, and zero cross detection circuit acquires
Signal is periodical pwm signal identical with mains frequency.When power module 14 is continued working in off-state, zero passage detection
The zero cross signal of circuit acquisition is to continue low level.
Controller 12 is connect with zero cross detection circuit 11, and controller 12 is used to determine power module 14 according to zero cross signal
On off operating mode.For example, power module 14 continues working when controller 12 detects that zero cross signal is periodical pwm signal
In on-state.When controller detects that zero cross signal is to continue low level, power module 14 is continued working in off-state.
Therefore, controller 12 analyzes 14 unexpected abnormality of power module according to zero cross signal and works in off-state, continues after an action of the bowels real
Apply the control to household electrical appliance.
In some embodiments, power conversion and work that controller 12 passes through output control signal control power supply module 14
State, the control signal are pwm signal.
Power supply circuit 13 is connect with controller 12, and power supply circuit 13 is used in power module 14 by off-state to connection shape
During state, power supply is provided for controller 12.Therefore, before implementing power module and restoring on-state, power supply circuit is held
Continue and provide power supply for controller, during with before restoring on-state, guarantees that controller can control household electrical appliance.
In some embodiments, power supply circuit 13 includes energy-storage travelling wave tube, and energy-storage travelling wave tube is connect with controller 12, energy-storage travelling wave tube
For power module 14 by off-state to on-state during, provide power supply for controller 12.
In some embodiments, energy-storage travelling wave tube includes energy storage inductor or electrolytic capacitor.
In general, the utility model embodiment can implement control, work by detecting the on off operating mode of power module
Reliably.
Referring to Fig. 2, zero cross detection circuit 11 includes: sample circuit 111, squaring circuit 112 and filter circuit
113.Squaring circuit 112 is connect with sample circuit 111 and controller 12 respectively, filter circuit 113 and squaring circuit
112 connections.
Sample circuit 111 is used to sample the power supply signal of power module 14, for example, the power supply signal is in power module 14
Alternating current.Squaring circuit 112 is used to power supply signal being shaped to square-wave signal, the square-wave signal as zero cross signal,
It can be conducive to controller 12 and make analysis.Filter circuit 113 is used for the harmonic signal filtered include in square-wave signal.
In order to elaborate the working principle of power sense circuit provided by the embodiment of the utility model, below with reference to Fig. 3
It makes and being further described, specific as follows:
Referring to Fig. 3, sample circuit 111 includes first resistor R1, second resistance R2, first diode D1, first capacitor
C1 and optocoupler U1, the one end first resistor R1 are used for the first collection terminal as acquisition power module 14, and the one end second resistance R2 is used
In the second collection terminal as acquisition power module 14, the first resistor R1 other end, first diode D1 cathode, first capacitor C1
One end and optocoupler U1 primary side one end are all connected to first node 3A, first diode D1 anode, the first capacitor C1 other end, optocoupler
The U1 primary side other end and the second resistance R2 other end are all connected to second node 3B, optocoupler U1 pair side one end and squaring circuit
112 connections, optocoupler U1 pair side other end ground connection.
Squaring circuit 112 includes 3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the second electricity
Hold C2 and PNP type triode Q1, the one end 3rd resistor R3 and the 4th one end resistance R4 are all connected to optocoupler U1 pair side one end, third
The emitter of the resistance R3 other end and PNP type triode Q1 are all used to be applied external voltage, the 4th resistance R4 other end and PNP
The base stage of type triode Q1 connects, and the 5th one end resistance R5 is all connected to the collection of PNP type triode Q1 with the 6th one end resistance R6
Electrode, the 5th resistance R5 other end are connect with second one end capacitor C2, the 6th resistance R6 other end and the second capacitor C2 other end
Ground connection.
The working principle of power sense circuit in Fig. 3 is as follows:
The alternating current of power module 14 by first resistor R1, second resistance R2, first diode D1, first capacitor C1 and
After the processing of optocoupler U1, optocoupler U1 pair side output and alternating current with frequency sampled signal, the sampled signal by 3rd resistor R3,
4th resistance R4, the 5th resistance R5, the 6th resistance R6, the second capacitor C2 and PNP type triode Q1 processing after, obtain a side
Wave signal, for the square-wave signal as in zero cross signal input controller 12, controller 12 analyzes power supply mould according to the zero cross signal
The on off operating mode of block 14.Power module 14 by off-state to on-state during, power supply circuit 13 is controller 12
Power supply is provided.
With the working principle of above-described embodiment power sense circuit shown in Fig. 3 the difference lies in that in some embodiments,
As shown in figure 4, sample circuit 111 include the 7th resistance R7, the 8th resistance R8, the second diode D2 and third capacitor C3, the 7th
The one end resistance R7 is used for the collection terminal as acquisition power module 14, and the 7th resistance R7 other end and the 8th one end resistance R8 connect
It connecing, the 8th resistance R8 other end, the second diode D2 cathode and the one end third capacitor C3 are all connect with squaring circuit 112,
Second diode D2 anode is all grounded with the third capacitor C3 other end.
Squaring circuit 112 includes the 9th resistance R9, the tenth resistance R10, the 4th capacitor C4 and NPN type triode Q2,
The base stage of NPN type triode Q2 is connect with the one end third capacitor C3, the emitter ground connection of NPN type triode Q2, NPN type triode
The collector of Q2 is connect with the 9th one end resistance R9 and the tenth one end resistance R10, and the 9th resistance R9 other end is outer for being applied
Portion's voltage, the tenth resistance R10 other end are connect with the 4th one end capacitor C4, the 4th capacitor C4 other end ground connection.
The working principle of power sense circuit in Fig. 4 is as follows:
The alternating current of power module 14 passes through the 7th resistance R7, the 8th resistance R8, the second diode D2 and third capacitor C3
Processing after, with alternating current with the sampled signal of frequency.The sampled signal passes through the 9th resistance R9, the tenth resistance R10, the 4th capacitor C4
And after the processing of NPN type triode Q2, a square-wave signal is obtained, the square-wave signal is as zero cross signal input controller 12
In, controller 12 analyzes the on off operating mode of power module 14 according to the zero cross signal.In power module 14 by off-state to connecing
During logical state, power supply circuit 13 is that controller 12 provides power supply.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Under the thinking of the utility model, it can also be combined between the technical characteristic in above embodiments or different embodiments,
Step can be realized with random order, and there are many other variations of the different aspect of the utility model as described above, be
Simplicity, they do not provide in details；Although the utility model is described in detail with reference to the foregoing embodiments, this
The those of ordinary skill in field it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments,
Or equivalent replacement of some of the technical features；And these are modified or replaceed, and do not make the sheet of corresponding technical solution
Matter is detached from the range of each embodiment technical solution of the application.
Claims (10)
1. a kind of power sense circuit, for detecting the on off operating mode of power module, which is characterized in that the power sense circuit
Include:
Zero cross detection circuit for detecting the zero passage dotted state of the power module, and generates zero cross signal；
Controller is connect with the zero cross detection circuit, for determining the on-off of the power module according to the zero cross signal
State；
Power supply circuit is connect with the controller, for the power module by off-state to on-state during,
Power supply is provided for the controller.
2. power sense circuit according to claim 1, which is characterized in that the zero cross detection circuit includes:
Sample circuit, for sampling the power supply signal of the power module；
Squaring circuit is connect with the sample circuit and the controller respectively, for the power supply signal to be shaped to
Square-wave signal.
3. power sense circuit according to claim 2, which is characterized in that the zero cross detection circuit further includes filtered electrical
Road, the filter circuit are connect with the squaring circuit, include harmonic signal in the square-wave signal for filtering.
4. power sense circuit according to claim 2, which is characterized in that the sample circuit includes first resistor,
Two resistance, first diode, first capacitor and optocoupler, described first resistor one end are used for the as the acquisition power module
One collection terminal, described second resistance one end are used for as the second collection terminal for acquiring the power module, and the first resistor is another
One end, the first diode cathode, described first capacitor one end and optocoupler primary side one end are all connected to first node, institute
State first diode anode, the first capacitor other end, the optocoupler primary side other end and the second resistance other end all
It is connected to second node, described optical coupling secondary edges one end is connect with the squaring circuit, the optical coupling secondary edges other end ground connection.
5. power sense circuit according to claim 4, which is characterized in that the squaring circuit includes third electricity
Resistance, the 4th resistance, the 5th resistance, the 6th resistance, the second capacitor and PNP type triode, described 3rd resistor one end and described the
Four resistance one end are all connected to described optical coupling secondary edges one end, the transmitting of the 3rd resistor other end and the PNP type triode
Pole is all used to be applied external voltage, and the 4th resistance other end is connect with the base stage of the PNP type triode, and the described 5th
Resistance one end and described 6th resistance one end are all connected to the collector of the PNP type triode, the 5th resistance other end
It is connect with second capacitor one end, the 6th resistance other end and the second capacitor other end are grounded.
6. power sense circuit according to claim 2, which is characterized in that the sample circuit includes the 7th resistance, the
Eight resistance, the second diode and third capacitor, described 7th resistance one end are used for as the collection terminal for acquiring the power module,
The 7th resistance other end is connect with described 8th resistance one end, and the 8th resistance other end, second diode are negative
Pole and third capacitor one end are all connect with the squaring circuit, second diode cathode and the third capacitor
The other end is all grounded.
7. power sense circuit according to claim 6, which is characterized in that the squaring circuit includes the 9th electricity
Resistance, the tenth resistance, the 4th capacitor and NPN type triode, the base stage of the NPN type triode and third capacitor one end connect
It connects, the emitter ground connection of the NPN type triode, the collector of the NPN type triode and described 9th resistance one end and institute
State the connection of the tenth resistance one end, the 9th resistance other end for being applied external voltage, the tenth resistance other end with
4th capacitor one end connection, the 4th capacitor other end ground connection.
8. power sense circuit according to any one of claims 1 to 7, which is characterized in that the power supply circuit includes storage
Can element, the energy-storage travelling wave tube connect with the controller, in the power module by off-state to on-state
In the process, power supply is provided for the controller.
9. power sense circuit according to claim 8, which is characterized in that the energy-storage travelling wave tube is electrolytic capacitor.
10. a kind of electronic equipment, which is characterized in that including power sense circuit as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821858606.9U CN209373078U (en) | 2018-11-12 | 2018-11-12 | A kind of power sense circuit and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821858606.9U CN209373078U (en) | 2018-11-12 | 2018-11-12 | A kind of power sense circuit and electronic equipment |
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| CN209373078U true CN209373078U (en) | 2019-09-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111148313A (en) * | 2020-01-19 | 2020-05-12 | 杭州昀芯光电科技有限公司 | LED system with alternating current zero-crossing signal path and power supply path separated |
| CN116709613A (en) * | 2023-05-24 | 2023-09-05 | 日炀(东莞)电子科技有限公司 | Engineering construction equipment and electronic circuit |
-
2018
- 2018-11-12 CN CN201821858606.9U patent/CN209373078U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111148313A (en) * | 2020-01-19 | 2020-05-12 | 杭州昀芯光电科技有限公司 | LED system with alternating current zero-crossing signal path and power supply path separated |
| CN116709613A (en) * | 2023-05-24 | 2023-09-05 | 日炀(东莞)电子科技有限公司 | Engineering construction equipment and electronic circuit |
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