CN109963394A - A kind of flash switch detection circuit and Intelligent lamp - Google Patents
A kind of flash switch detection circuit and Intelligent lamp Download PDFInfo
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- CN109963394A CN109963394A CN201910412314.5A CN201910412314A CN109963394A CN 109963394 A CN109963394 A CN 109963394A CN 201910412314 A CN201910412314 A CN 201910412314A CN 109963394 A CN109963394 A CN 109963394A
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- 238000001514 detection method Methods 0.000 title claims abstract description 130
- 238000001914 filtration Methods 0.000 claims abstract description 73
- 239000003990 capacitor Substances 0.000 claims description 33
- 230000005611 electricity Effects 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 3
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- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention discloses a kind of flash switch detection circuits, including current rectifying and wave filtering circuit, detection circuit, DC-DC converter and control circuit；The input terminal of current rectifying and wave filtering circuit connects AC power source, and output end is connected with the input terminal of DC-DC converter；Detection circuit is used to detect the flash state of the AC power source of the input terminal of current rectifying and wave filtering circuit；And works as and detect that flash state then generates the level signal conveyed to control circuit；Working condition of the control circuit for response levels signal control power load.Flash switch detection circuit in the application, so that user can either realize the function of the working condition of conventional power source switch control electrical equipment, it can guarantee the continued power to electrical equipment again, possibility be provided for the wireless control of electrical equipment, convenient for the use of intelligentized electrical equipment.A kind of Intelligent lamp is also disclosed in the application, and there is above-mentioned beneficial effect.
Description
Technical field
The present invention relates to intelligent electric appliance control technology fields, more particularly to a kind of flash switch detection circuit and one kind
Intelligent lamp.
Background technique
With the development of network technology, more and more electrical equipments are configured with the mobile terminal of wireless control.But base
The traditional habit of electrical equipment is used in people, often by manually controlling power switch to be switched off or on electrical equipment
Power supply opens or closes to have the function that control electrical equipment.And if once electrical equipment is disconnected because of the control of power switch
Electricity will fail to the control of electrical equipment by the mobile terminal of the control electrical equipment of wireless network, this is electrical equipment
Wireless control is made troubles.
Summary of the invention
The object of the present invention is to provide a kind of flash switch detection circuit and a kind of Intelligent lamps, solve power switch
Electrical equipment is powered off, is the problem of the wireless control inconvenience of electrical equipment.
In order to solve the above technical problems, the present invention provides a kind of flash switch detection circuit, including current rectifying and wave filtering circuit, inspection
Slowdown monitoring circuit, DC-DC converter and control circuit；
The input terminal of the current rectifying and wave filtering circuit connects AC power source, the input terminal of output end and the DC-DC converter
It is connected；
The output end of the input terminal of the detection circuit and current rectifying and wave filtering circuit electrical connection, for detecting the rectification
The flash state of the AC power source of the input terminal of filter circuit；And works as and detect that the flash state is then generated to the control electricity
The level signal of road conveying；Wherein the flash state is that the AC power source power-off duration breaking no more than preset duration occurs
Electricity condition；
The control circuit is for responding the working condition that the level signal controls the power load.
Wherein, the detection circuit includes the first detection circuit for detecting the off-position of the AC power source, with
And for determining whether the power-off duration is no more than the second detection circuit of preset duration；
Wherein, the input terminal of first detection circuit is connected with the output end of the current rectifying and wave filtering circuit, output end
It is connected with the first input end of the control circuit；
The input terminal of second detection circuit is connected with the output end of the DC-DC converter, output end and described
Second input terminal of control circuit is connected.
Wherein, first detection circuit includes first resistor, second resistance, 3rd resistor, the 4th resistance, first capacitor
And hysteresis loop comparator；
Wherein, the first end of the first resistor is connected with the output end of the current rectifying and wave filtering circuit, second end and institute
The non-inverting input terminal for stating hysteresis loop comparator is connected；
The first end of the second resistance is connected with the output end of the current rectifying and wave filtering circuit, second end and the hysteresis
The reversed phase input terminal of comparator is connected；
The first end of the 3rd resistor is connected with the non-inverting input terminal of the hysteresis loop comparator, second end ground connection；
The first end of the first end of 4th resistance and the first capacitor with the reversed phase of the hysteresis loop comparator
Input terminal is connected；The second end of 4th resistance and the second end of the first capacitor are grounded；
The positive pressure limiting input terminal of the hysteresis loop comparator is connected with the output end of the DC-DC converter；It is described stagnant
The output end for returning comparator is the output end of first detection circuit.
Wherein, first detection circuit includes first resistor, second resistance, 3rd resistor, the 4th resistance and hysteresis
Comparator；
Wherein, the first end of the first resistor is connected with the output end of the current rectifying and wave filtering circuit, second end and institute
The non-inverting input terminal for stating hysteresis loop comparator is connected；
The first end of the second resistance is connected with the output end of the DC-DC converter, second end and the hysteresis
The reversed phase input terminal of comparator is connected；
The first end of the 3rd resistor is connected with the non-inverting input terminal of the hysteresis loop comparator, second end ground connection；
The first end of 4th resistance is connected with the reversed phase input terminal of the hysteresis loop comparator, and second end connects
Ground；
The positive pressure limiting input terminal of the hysteresis loop comparator is connected with the output end of the DC-DC converter；It is described stagnant
The output end for returning comparator is the output end of first detection circuit.
Wherein, second detection circuit includes the 5th resistance, the 6th resistance, the second capacitor and switching device；
The first end of 5th resistance is connected with the output end of the DC-DC converter, second end and the described 6th
The first end of resistance and the first end of the second capacitor are connected；The of the second end of 6th resistance and second capacitor
Two ends ground connection；
The first end of the switching device is connected with the output end of the DC-DC converter, second end ground connection, third end
It is electrically connected with the second end of the 5th resistance；It is described and when the second end voltage of the 5th resistance is greater than predeterminated voltage
The first end and second end of switching device is connected；It is described to open when the second end voltage of the 5th resistance is less than predeterminated voltage
The first end and second end for closing device disconnects；The first end of the switching device is the output end of second detection circuit.
Wherein, the switching device is NPN type triode；The collector of the NPN type triode and DC-DC conversion
The output end of device is connected, and emitter ground connection, base stage is connected with the second end of the 5th resistance；
Or the switching device is NMOS tube；The drain electrode of the NMOS tube and the output end phase of the DC-DC converter
Connection, source electrode ground connection, grid are connected with the second end of the 5th resistance.
Wherein, second detection circuit further includes the second end that the 5th resistance is arranged in and the switching device
The 7th resistance between third end.
Wherein, second detection circuit further includes the output end and the derailing switch that the DC-DC converter is arranged in
The 8th resistance between the first end of part.
It wherein, further include input terminal and AC power source electrical connection, the input of output end and the current rectifying and wave filtering circuit
Hold the flash switch being connected.
Wherein, the control circuit further includes the switching command for receiving the working condition for switching the power load
Wireless communication module.
A kind of Intelligent lamp is additionally provided in the present invention, including as above described in any item flash switch detection circuits, drive
Dynamic model block and lamp group；
The output of the first input end of the drive module and the current rectifying and wave filtering circuit in the flash switch detection circuit
End is connected, and the second input terminal is connected with the output end of the control circuit, and output end is connected with the lamp group.
Flash switch detection circuit provided by the present invention can be switched with flash and be used cooperatively, will be switched by flash
The alternating current of input is converted using current rectifying and wave filtering circuit, obtains direct current, and detection circuit is detected by the direct current,
It can get the power blackout situation of current rectifying and wave filtering circuit input terminal, and generate corresponding level signal to control circuit, so that the control
The working condition of circuit switching power load；It, can be with and on the basis of can detecte the off-position of voltage of input
Distinguish whether power-off duration is more than preset duration, thus distinguish the off-position be flash switch be pressed and the power-off that generates also
Caused by being grid cut-off, so that control circuit can more accurately control the working condition of power load.
Flash switch detection circuit in the application can be switched with flash and is used cooperatively, and user can either realize use
The function of the working condition (for example, opening and closing) of switch control electrical equipment, and can guarantee to continue electrical equipment
Power supply, provides possibility for the wireless control of electrical equipment, convenient for the use of intelligentized electrical equipment.
A kind of Intelligent lamp is also disclosed in the application, and there is above-mentioned beneficial effect.
Detailed description of the invention
It, below will be to embodiment or existing for the clearer technical solution for illustrating the embodiment of the present invention or the prior art
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the electrical block diagram of flash switch detection circuit provided in an embodiment of the present invention；
Fig. 2 be another embodiment of the present invention provides flash switch detection circuit structural schematic diagram；
Fig. 3 is that the output voltage of current rectifying and wave filtering circuit provided in an embodiment of the present invention changes coordinate diagram；
Fig. 4 is the electrical block diagram of the first detection circuit provided in an embodiment of the present invention；
Fig. 5 be another embodiment of the present invention provides the first detection circuit electrical block diagram；
Fig. 6 is the electrical block diagram of the second detection circuit provided in an embodiment of the present invention；
Fig. 7 be another embodiment of the present invention provides the second detection circuit electrical block diagram；
Fig. 8 be another embodiment of the present invention provides flash switch detection circuit structural schematic diagram；
Fig. 9 is the structural schematic diagram of Intelligent lamp provided in an embodiment of the present invention.
Specific embodiment
In electrical equipment practical application, user generallys use the wireless terminals such as operation button or the remote control of electrical equipment
The working condition of equipment control and regulation electrical equipment.But to electrical equipment carry out one of various control and regulation on condition that,
The power switch for controlling the opening and closing of electrical equipment is in the state connected, and guarantees that external power supply and electrical equipment are powered.
But the traditional habit that electrical equipment is used according to people, often habit is closed or is opened by control power switch
Open electrical equipment.For example, household light fixtures, user's general custom closes lamps and lanterns by switch on wall；When user passes through switch on wall
When closing lamps and lanterns, lamps and lanterns and external power supply power-off, user can not be again by way of the wireless control such as remote control or cell phone application software
Lamps and lanterns are controlled, are made troubles for the operation of user.
In summary it is found that user directly controls the energized state of electrical equipment by power switch, to realize
The opening and closing of electrical equipment are made troubles for user's intelligence wireless control electrical equipment.
When applicant expects that user operates button switch as a result, if only only generation one is of short duration for button switch
Off-position, restore power supply to electrical equipment again later, the continued power of electrical equipment can be realized, meet wireless control
The requirement of electrical equipment, a kind of instruction type in addition also inputting this off-position as user, by the work of electrical equipment
It is switched to the state of user's needs as state, meets the demand for control of user.
Flash switch detection circuit provided in the present invention is both being capable of the of short duration power-off of external power supply to electrical equipment
This state is detected, and the working condition based on testing result control electrical equipment.
The technical solution in the application will be illustrated with specific embodiment below.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in FIG. 1, FIG. 1 is the electrical block diagrams of flash switch detection circuit provided in an embodiment of the present invention, should
Flash switch detection circuit may include:
Current rectifying and wave filtering circuit 1, detection circuit 2, DC-DC converter 3 and control circuit 4；
The input terminal of current rectifying and wave filtering circuit 1 connects AC power source, and output end is connected with the input terminal of DC-DC converter 3；
The output end electrical connection of the input terminal and current rectifying and wave filtering circuit 1 of detection circuit 2, for detecting current rectifying and wave filtering circuit 1
Input terminal AC power source flash state；And believe when detecting that flash state is then generated to the level of the conveying of control circuit 4
Number；Wherein flash state is the off-position that AC power source occurs that power-off duration is no more than preset duration；
Working condition of the control circuit 4 for response levels signal control power load 5.
It should be noted that the required power supply that works is largely using alternating current for most of electrical equipment
The alternating current that power grid provides is as power supply.But the work for the power load of electrical equipment 5 and control circuit 4 etc.
Voltage is usually DC voltage.Therefore, the alternating current of 1 pair of current rectifying and wave filtering circuit input can be first passed through after accessing alternating current
It is converted, and exports the direct current of constant voltage.But for the direct current that current rectifying and wave filtering circuit 1 exports, voltage value one
As it is higher, for example, 1 input terminal of current rectifying and wave filtering circuit input be 310V alternating current, 1 output end of current rectifying and wave filtering circuit output
DC voltage be 220V direct current, this high voltage is not appropriate for the supply voltage as control circuit 4, therefore also needs
It to be the direct current of low-voltage by the DC conversion of high voltage in the connection DC-DC converter of rectification filter circuit output end.
Specifically, the current rectifying and wave filtering circuit 1 in the present embodiment specifically can using with energy-storage function rectifier bridge (or
Person AC/DC chip) and filter combined use, this is in circuit design commonly for that will exchange the circuit for being converted to direct current
Structure, to not being described in detail in this application.
Because the flash switch detection circuit in the present embodiment is to detect the flash state that the alternating current of input occurs.
Specifically, which refers to that of short duration off-position occurs in the alternating current of input, which is usually user's control
The switch of electrical equipment processed is formed by.When user's push switch, between AC power source and the power input of electrical equipment
Open circuit is formed, after user's trip switch, external power supply again restores electricity to electrical equipment；Habit based on user operable switch
It is used, to the pressing operation of switch will not last very long, therefore typically just there is of short duration power process, this is of short duration disconnected
The state of electricity is flash state signified in the application.
When flash state occurs in the AC power source of input AC electricity, namely it is comparable to the input terminal of current rectifying and wave filtering circuit 1
There is flash state in alternating voltage, and correspondingly, the DC voltage that current rectifying and wave filtering circuit 1 exports can also occur to change accordingly.This
The of short duration off state of input terminal based on current rectifying and wave filtering circuit 1 in embodiment makes the DC voltage of its output end change this therewith
One state is able to detect the DC voltage change of the output end of current rectifying and wave filtering circuit 1 in the output end setting of current rectifying and wave filtering circuit 1
Detection circuit 2.When the detection circuit 2 detects the DC voltage change of 1 output end of current rectifying and wave filtering circuit, can judge whole
There is flash state in stream 1 input terminal of filter circuit.Detection circuit 2 is based on this testing result and inputs accordingly to control circuit 4
Level signal, be equivalent to control circuit 4 receive user by way of of short duration power-off to control circuit 4 send one switching
The switching command of power load.Control circuit 4 realizes the switching of 5 working condition of power load based on this switching command.And it uses
After the circuit to input electrical equipment of short duration by switch powers off, AC power source has been restored again to electrical equipment at family
Power supply, so that user is either controlled electrical equipment at open state or closed state, external power supply by switch
Electrical equipment can be powered, so that wireless control may be implemented in electrical equipment, be mentioned for user's intelligentized control method
For convenience.
In addition, the flash state that detection circuit 2 detects the input terminal of current rectifying and wave filtering circuit 1 includes off-position and power-off
Detection of both duration removes mainly in view of off-position occurs in the alternating voltage inputted for electrical equipment input terminal
Because other than off-position caused by user's control switchs, it is also possible to occur because of power-off caused by grid cut-off, if control
Circuit 4 switches the working condition of power load 5, hence it is evident that will lead to electricity consumption after grid cut-off re-powers again
Load the problem of 5 working state controls inaccuracy.And the maximum difference of grid cut-off and flash state is to power off duration difference.
Therefore, the detection circuit 2 in the application can also detect power-off duration, distinguish grid cut-off with this in addition to detecting off-position
With flash state, the work for the control power load 5 for enabling the flash switch detection circuit in the present embodiment more accurate
State.
The flash state of flash switch detection circuit in the present invention, the alternating current inputted by 2 Duis of detection circuit carries out
Detection, and switch the working condition of power load 5 according to testing result, so that user can be realized by of short duration power-off to electric appliance
The switching control of the working condition of equipment, also, no matter electrical equipment is switched to open state or closed state by user, all
It is able to maintain the power supply to electrical equipment, so that electrical equipment will not can not receive wireless control because of there is no power supply
The problem of, and then convenience is provided for user's intelligentized control method electrical equipment.
Based on the above embodiment, in another embodiment of the present invention, as shown in Fig. 2, Fig. 2 is another reality of the present invention
The structural schematic diagram of the flash switch detection circuit of example offer is applied, the detection circuit 2 in the flash switch detection circuit specifically may be used
To include:
For detecting the first detection circuit 21 of the off-position of alternating voltage；
And for determining whether power-off duration is no more than the second detection circuit 22 of preset duration；
Wherein, the input terminal of first detection circuit 21 is connected with the output end of the current rectifying and wave filtering circuit 1, output
End is connected with the first input end of the control circuit 4；
The input terminal of second detection circuit 22 is connected with the output end of the DC-DC converter 3, output end and institute
The second input terminal for stating control circuit 4 is connected.
As previously mentioned, when flash state occurs in the alternating voltage of the input terminal of current rectifying and wave filtering circuit 1, output end
The DC voltage of Vout1, which necessarily can also generate, correspondingly to be changed.Specifically, because in current rectifying and wave filtering circuit 1 including capacitor etc.
Energy-storage travelling wave tube, when the power-off of the input terminal of current rectifying and wave filtering circuit 1, the electrical energy discharge of its own storage, as discharge time side is prolonged
Long, the output voltage of output end vo ut1 is gradually reduced.As shown in figure 3, Fig. 3 is rectifying and wave-filtering provided in an embodiment of the present invention
The output voltage of circuit changes coordinate diagram, and in Fig. 3, ordinate is the output voltage U of 1 output end vo ut1 of current rectifying and wave filtering circuit, horizontal
Coordinate is time coordinate t, and start time is that the input terminal of current rectifying and wave filtering circuit 1 starts (to be equivalent to user to start at the time of power-off
At the time of push switch)；Time t0It is powered off for 1 input terminal of current rectifying and wave filtering circuit and (is equivalent to user's trip switch at the time of end
At the time of)；U0For t0The output voltage of the output end vo ut1 of moment corresponding current rectifying and wave filtering circuit 1, that is to say in flash state
The minimum output voltage that 1 output end vo ut1 of current rectifying and wave filtering circuit can reach.From the figure 3, it may be seen that 1 output end of current rectifying and wave filtering circuit
The output voltage of Vout1 is first to drop to rise afterwards.
For DC-DC converter 3, the voltage of input terminal is the output voltage of current rectifying and wave filtering circuit 1, DC-DC
The voltage of 3 output end vo ut2 of converter is constant voltage U1.Also, when U is greater than U1When, 3 output end vo ut2 of DC-DC converter
Output voltage be U1, and when U is less than U1When, the voltage of 3 output end vo ut2 of DC-DC converter is 0.
In conjunction with Fig. 2 and Fig. 3, as time t0It is relatively short, so that U0Greater than U1, DC-DC converter 2 during entire flash
Output end vo ut2 voltage be constant voltage values U1.As time t0It is relatively long, so that U0Less than U1, DC-DC converter 2 is defeated
The voltage of outlet Vout2 is by constant voltage values U1Become 0, until 1 input terminal of current rectifying and wave filtering circuit recloses alternating voltage, makes
It obtains 2 input terminal voltage of DC-DC converter and becomes greater than constant voltage values U again1When, output end vo ut2 output voltage is just heavy
Newly become constant voltage values U1, and the output voltage of 2 output end vo ut2 of DC-DC converter is 0 duration length, i.e.,
For the key for distinguishing flash state and grid cut-off.
The input terminal of the first detection circuit 21 in the present embodiment is connected with the output end of current rectifying and wave filtering circuit 1, can be with
It detects that the voltage of 1 output end vo ut1 of current rectifying and wave filtering circuit first drops and rises this process afterwards, to judge current rectifying and wave filtering circuit 1
There is flash state in input terminal.And the input terminal of the second detection circuit 22 is connected with 3 output end vo ut2 of DC-DC converter, it can
To detect the voltage of 3 output end vo ut2 of DC-DC converter by constant voltage values U1Become 0, and after temporary duration, again
Become constant voltage values U1This process, and the length of time for being 0 according to the continuous voltage of 3 output end vo ut2 of DC-DC converter
Corresponding electric signal is exported to control circuit 4, so that control circuit 4 is after re-powering, according to the electricity of the second detection circuit 22
Signal can judge the working condition to power load 5 whether is needed to switch over.
It is discussed in detail below with circuit structure of the specifically embodiment to the first detection circuit and the second detection circuit.
As shown in figure 4, Fig. 4 is the electrical block diagram of the first detection circuit provided in an embodiment of the present invention.This first
Detection circuit 21 can specifically include:
First resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, first capacitor C1 and hysteresis loop comparator；
Wherein, the first end of first resistor R1 is connected with the output end of current rectifying and wave filtering circuit 1, and second end and hysteresis compare
The non-inverting input terminal of device is connected；
The first end of second resistance R2 is connected with the output end of current rectifying and wave filtering circuit 1, second end and hysteresis loop comparator
Reversed phase input terminal is connected；
The first end of 3rd resistor R3 is connected with the non-inverting input terminal of hysteresis loop comparator, second end ground connection；
The first end of 4th resistance R4 and the first end of first capacitor C1 with the reversed phase input terminal phase of hysteresis loop comparator
Connection；The second end of 4th resistance R4 and the second end of first capacitor C1 are grounded；
The positive pressure limiting input terminal of hysteresis loop comparator is connected with the output end of DC-DC converter 3；Hysteresis loop comparator it is defeated
Outlet is the output end IO1 of the first detection circuit 21.
As shown in figure 4, the first end of first resistor R1 and second resistance R2 access rectification filter in the first detection circuit 21
The output voltage of 1 output end vo ut1 of wave circuit.Reasonably select first resistor R1, second resistance R2,3rd resistor R3 and the 4th
The resistance value size of resistance R4, so that the non-inverting input terminal voltage of hysteresis loop comparator is greater than the voltage of inverting input terminal, hysteresis compares
The output end IO1 of device can output high level voltage.For first resistor R1, second resistance R2,3rd resistor R3 and the 4th
The resistance value set-up mode of resistance R4, as long as the resistance value ratio of 3rd resistor R3 and first resistor R1 are greater than the electricity of the 4th resistance R4 and second
The resistance value ratio of resistance R2 is not specifically limited the specific resistance value of four resistance in the present embodiment.
Because being also parallel with first capacitor C1 on the 4th resistance R4, electric energy can be stored, then when current rectifying and wave filtering circuit 1 exports
The voltage of Vout1 is held because first capacitor C1 starts to discharge, so that hysteresis loop comparator is same mutually defeated when flash of-state voltage reduces
Enter the voltage at end to the voltage value for being lower than inverting input terminal, the output end of hysteresis loop comparator that is to say the defeated of the first detection circuit 21
Outlet IO1 exports low level.When flash state terminates, after the voltage of 1 output end vo ut1 of current rectifying and wave filtering circuit increases again, the
The output end IO1 of one detection circuit 21 exports high level again.
Become again when the output end IO1 voltage that control circuit 4 receives the first detection circuit 21 becomes low level from high level
For high level, the working condition of power load 5 can be switched over.
Certainly, the input terminal to second resistance R2 in this present embodiment is primarily to one reference voltage of access, makes
It obtains when the decline of the voltage of output end vo ut1 of current rectifying and wave filtering circuit 1 occurs, the input electricity of the inverting input terminal of hysteresis loop comparator
Drops speed is slower than the input voltage decrease speed of non-inverting input terminal, and then realizes that the output end of hysteresis loop comparator that is to say the
The output end IO1 of one detection circuit 21 is from high level to low transition.
Therefore, in another embodiment of the present invention, the voltage of the inverting input terminal of hysteresis loop comparator is also deposited
In another input mode, specifically as shown in figure 5, Fig. 5 be another embodiment of the present invention provides the first detection circuit electricity
Line structure schematic diagram, first detection circuit can specifically include:
First resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4 and hysteresis loop comparator；
Wherein, the first end of first resistor R1 is connected with the output end of current rectifying and wave filtering circuit 1, and second end and hysteresis compare
The non-inverting input terminal of device is connected；
The first end of second resistance R2 is connected with the output end of DC-DC converter 3, second end and hysteresis loop comparator it is anti-
It is connected to phase input terminal；
The first end of 3rd resistor R3 is connected with the non-inverting input terminal of hysteresis loop comparator, second end ground connection；
The first end of 4th resistance R4 is connected with the reversed phase input terminal of hysteresis loop comparator, and second end is grounded；
The positive pressure limiting input terminal of hysteresis loop comparator is connected with the output end of DC-DC converter 3；Hysteresis loop comparator it is defeated
Outlet is the output end of the first detection circuit 21.
Referring to Fig. 4 and Fig. 5, in the first detection circuit 21 the first detection circuit 21 corresponding with Fig. 4 in the present embodiment
The main distinction is that the inverting input terminal of hysteresis loop comparator passes through second resistance R2 and the 4th resistance R4 and DC- in the present embodiment
The output end of DC converter is connected, and does not need shunt capacitance on the 4th resistance R4.
When the output end vo ut1 normal output voltage of current rectifying and wave filtering circuit 1, by the way that first resistor R1, is rationally arranged
The resistance value of two resistance R2,3rd resistor R3, the 4th resistance R4, so that the voltage of hysteresis loop comparator non-inverting input terminal is defeated greater than reversed
Enter the voltage at end, the output end of hysteresis loop comparator is the output end IO1 output high level of the first detection circuit 21 at this time.
When the output voltage of the output end vo ut1 of current rectifying and wave filtering circuit 1 reduces, the voltage of first resistor R1 access subtracts
Small, the non-inverting input terminal input voltage of hysteresis loop comparator accordingly reduces；As long as and working as the output end vo ut1 of current rectifying and wave filtering circuit 1
Permanent ground constant voltage U of the output voltage greater than 2 output end vo ut2 of DC-DC converter1, the inverting input terminal of hysteresis loop comparator
Input voltage is constant, and the reverse input end voltage of hysteresis loop comparator is finally made to be greater than non-inverting input terminal voltage, the first detection electricity
The output end IO1 on road 21 exports low level.
Relative to the structure of the first detection circuit 21 in a upper embodiment, the reverse phase of the hysteresis loop comparator in the present embodiment is defeated
Enter end and store electric energy without capacity cell, but directly guarantees the electricity of inverting input terminal by the energy of DC-DC converter 3
Pressure does not decline or declines slower relative to the voltage of non-inverting input terminal.
The first detection circuit 21 in above two embodiment the output end vo ut1 of current rectifying and wave filtering circuit 1 voltage because
When flash state and first dropping rises afterwards, the output voltage of the output end of the first detection circuit 21 can be made to become low from high level
Level becomes high level, the switching of the working condition of output end power load of the control circuit 4 based on the first detection circuit 21 again.
In addition, may further be the first detection in order to avoid the factors such as power network fluctuation cause 21 erroneous detection of the first detection circuit
The low level that circuit 21 exports is arranged a reasonable minimum duration and limits, that is, has been more than the low level variation ability quilt of certain time length
It is considered as and flash state has occurred.
As previously mentioned, for the positive limiting voltage of the hysteresis loop comparator in the first detection circuit in above-mentioned two embodiment
The input voltage of input terminal by DC-DC converter output end vo ut2 provide, if but the user operable switch duration compared with
Long, leading to the output voltage of the output end vo ut2 of DC-DC converter is 0, then hysteresis loop comparator cisco unity malfunction, at this point,
Second detection circuit 22 can be with open detection function.
Specifically, as shown in fig. 6, Fig. 6 is the structural schematic diagram of the second detection circuit provided in an embodiment of the present invention, this
Two detection circuits can specifically include:
5th resistance R5, the 6th resistance R6, the second capacitor C2 and switching device Q1；
The first end of 5th resistance R5 is connected with the output end of DC-DC converter 3, and the of second end and the 6th resistance R6
The first end of one end and the second capacitor C2 are connected；
The second end of 6th resistance R6 and the second end of the second capacitor C2 ground connection；
The first end of switching device Q is connected with the output end of DC-DC converter 3, second end ground connection, third end and the 5th
The second end of resistance R5 is electrically connected；
And when the second end voltage of the 5th resistance R5 is greater than predeterminated voltage, the first end and second end of switching device Q1
Conducting；
When the second end voltage of the 5th resistance R5 is less than predeterminated voltage, the first end and second end of switching device Q1 is disconnected
It opens；
The first end of switching device Q1 is the output end IO2 of the second detection circuit 22.
As shown in fig. 6, working as the output end vo ut2 of DC-DC converter 3 because flash occurs in the input terminal of current rectifying and wave filtering circuit 1
State and power off, output voltage be 0 when, the second capacitor C2 electric discharge；Before the second capacitor C2 discharges completion completely, if rectification filter
The input terminal of wave circuit 1 accesses alternating current again, and 3 output voltage of DC-DC converter becomes constant voltage values U from 01When, second
Capacitor C2 is because itself being stored with certain energy, and therefore, the charging voltage of the second capacitor C2 first end is opposite to tell somebody what one's real intentions are, so that switch
The third end voltage of device Q1 is greater than conducting voltage, and the first end and second end of switching device Q1 is connected, the second detection circuit 21
Output end IO2 be equivalent to ground connection, export low level.
If the output end vo ut2 of DC-DC converter because grid cut-off leads to output voltage be 0 when, because of grid cut-off
Time general persistence is longer；Therefore, the second capacitor is again extensive in the output voltage of the output end vo ut2 of DC-DC converter
Again to U1Before, the electric energy stored just release completely.When the output voltage of the output end vo ut2 of DC-DC converter is again extensive
Again to U1When, the second capacitor needs recharge, therefore the voltage phase of the second capacitor first end namely the 5th resistance second end
To lower, the third end input voltage of switching device is caused to be less than turn-on voltage, the first end and second end of switching device is disconnected
It opens, the first end voltage of switching device is equal to the output voltage of DC-DC converter output end vo ut2, and the second detection circuit 22 is defeated
Outlet IO2 exports high level, and with the charging complete of the second capacitor C2, the third end input voltage of switching device Q2 gradually increases
Greatly, so that the first end and second end of switching device Q2 is connected again, the output end IO2 of the second detection circuit 22 exports low electricity
It is flat.
It can be seen that becoming U from 0 when there is 3 output end vo ut2 output voltage of DC-DC converter1This change procedure
When, if 22 output end IO2 of the second detection circuit exports always low level, illustrate that flash occurs in 1 input terminal of current rectifying and wave filtering circuit
State；If 22 output end IO2 of the second detection circuit first exports high level and exports low level again, illustrate that current rectifying and wave filtering circuit 1 is defeated
Enter the appearance grid cut-off at end.
It should be noted that having above-mentioned each embodiment it is found that the second capacitor C2 in the second detection circuit 22 is whole
The input terminal of stream filter circuit 1 has continued that the electricity went off, and certain time just starts to discharge later, is normally operated and is opened according to user
The habit of pass, the duration of user's push switch do not survive into the second capacitor C2 generally and discharge completely completion.In addition, in order to slow down
The velocity of discharge of second capacitor C2 can also suitably select the resistance value size of the 5th resistance R5 and the 6th resistance R6, so that second
The electric discharge duration of capacitor C2 can reach testing requirements.
Optionally, in another embodiment of the present invention, can also further include:
Switching device Q1 is NPN type triode or is NMOS tube；
If switching device Q1 is NPN type triode, the collector of NPN type triode and the output end phase of DC-DC converter 3
Connection, emitter ground connection, base stage are connected with the second end of the 5th resistance R5；
If switching device Q1 is NMOS tube, the drain electrode of NMOS tube is connected with the output end of DC-DC converter 3, and source electrode connects
The second end of ground, grid and the 5th resistance R5 are connected.
Further, Fig. 7 be another embodiment of the present invention provides the second detection circuit structural schematic diagram, in order to adjust
The electric current of the grid of the base stage or NMOS tube of NPN type triode, can be in the second end and switching device Q1 of the 5th resistance R5
The 7th resistance R7 of equipment between third end, to realize the metering function to the third end of switching device Q1.
Further, it can also be set between the first end of switching device Q1 and the output end vo ut2 of DC-DC converter 3
The 8th resistance R8 is set, is adjusted for the level signal to 22 output end IO2 of the second detection circuit.
Based on above-mentioned any embodiment, as shown in figure 8, Fig. 8 be another embodiment of the present invention provides flash switch detection
The structural schematic diagram of circuit can also further include that input terminal and AC power source are electrically connected in another embodiment of the invention
It connects, the flash switch 6 that output end is connected with the input terminal of current rectifying and wave filtering circuit 1；
The flash switch 6 is that can control between 1 input terminal of current rectifying and wave filtering circuit and AC power source flash occur
The switch of state.
For the specific structure type of the flash switch 6, can be can automatic rebounding button switch, such as host computer
Power switch；Can also be can automatic rebounding rocker switch, such as the doorbell rocker switch of electronic door bell；It can also be touching
Control screen switch, when user's finger touch-control, circuit is disconnected, and when user's finger not touch-control, circuit is connected.There are also have similar function
The switch of energy structure will not enumerate herein.
It should be noted that the switch of the of short duration power-off of user's control illustrated in above-mentioned each embodiment is this implementation
Flash switch in example.
As previously mentioned, the flash switch detection circuit in the application be for electrical equipment in case of constant power, can
To receive user by the working condition of flash switch control electrical equipment so that user to the wireless control of electrical equipment more
It is convenient.Therefore, in another embodiment of the present invention, control circuit 4 further includes switching the power load 5 for receiving
Working condition switching command wireless communication module.
In other words control circuit 4 can be the work of flash state that receiving test circuit 2 detects to power load 5
State is adjusted, and is also possible to receive remote control or wireless signal that mobile phone A AP software issues is to the work shape of power load 5
State is adjusted.
A kind of Intelligent lamp is additionally provided in the present invention, as shown in figure 9, Fig. 9 is intelligent lamp provided in an embodiment of the present invention
The structural schematic diagram of tool, the Intelligent lamp can specifically include flash switch detection circuit described in above-mentioned any embodiment, drive
Dynamic model block 51 and lamp group 52；
The first input end of drive module 51 is connected with the output end of the current rectifying and wave filtering circuit 1 in flash switch detection circuit
It connects, the second input terminal is connected with the output end of control circuit 4, and output end is connected with lamp group 52.
Drive module 51 and lamp group 52 in the present embodiment are equivalent to the power load 5 in above-mentioned each embodiment, intelligence
The switch of lamps and lanterns can be flash switch 7.When user is by pressing flash switch 7, lamps and lanterns 52 can be become going out from bright state
State can also be become bright state from the state of going out.
And no matter Intelligent lamp is in bright state or to go out state, and user can pass through remote control or cell phone application
The luminance of software control Intelligent lamp provides convenience to the control of Intelligent lamp for user.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other
The difference of embodiment, same or similar part may refer to each other between each embodiment.For being filled disclosed in embodiment
For setting, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part
Explanation.
Claims (11)
1. a kind of flash switch detection circuit, which is characterized in that including current rectifying and wave filtering circuit, detection circuit, DC-DC converter and
Control circuit；
The input terminal of the current rectifying and wave filtering circuit connects AC power source, and output end is connected with the input terminal of the DC-DC converter
It connects；
The output end of the input terminal of the detection circuit and current rectifying and wave filtering circuit electrical connection, for detecting the rectifying and wave-filtering
The flash state of the AC power source of the input terminal of circuit；And it is defeated to the control circuit when detecting that the flash state is then generated
The level signal sent；Wherein the flash state is the power-off shape that the AC power source occurs that power-off duration is no more than preset duration
State；
The control circuit is for responding the working condition that the level signal controls the power load.
2. flash switch detection circuit as described in claim 1, which is characterized in that the detection circuit includes for detecting
The first detection circuit of the off-position of AC power source is stated, and for determining whether the power-off duration is no more than preset duration
The second detection circuit；
Wherein, the input terminal of first detection circuit is connected with the output end of the current rectifying and wave filtering circuit, output end and institute
The first input end for stating control circuit is connected；
The input terminal of second detection circuit is connected with the output end of the DC-DC converter, output end and the control
Second input terminal of circuit is connected.
3. flash switch detection circuit as claimed in claim 2, which is characterized in that first detection circuit includes the first electricity
Resistance, second resistance, 3rd resistor, the 4th resistance, first capacitor and hysteresis loop comparator；
Wherein, the first end of the first resistor is connected with the output end of the current rectifying and wave filtering circuit, second end and described stagnant
The non-inverting input terminal for returning comparator is connected；
The first end of the second resistance is connected with the output end of the current rectifying and wave filtering circuit, and second end and the hysteresis compare
The reversed phase input terminal of device is connected；
The first end of the 3rd resistor is connected with the non-inverting input terminal of the hysteresis loop comparator, second end ground connection；
The first end of 4th resistance and the first end of the first capacitor are mutually inputted with the reversed of the hysteresis loop comparator
End is connected；The second end of 4th resistance and the second end of the first capacitor are grounded；
The positive pressure limiting input terminal of the hysteresis loop comparator is connected with the output end of the DC-DC converter；The hysteresis ratio
Compared with the output end that the output end of device is first detection circuit.
4. flash switch detection circuit as claimed in claim 2, which is characterized in that first detection circuit includes the first electricity
Resistance, second resistance, 3rd resistor, the 4th resistance and hysteresis loop comparator；
Wherein, the first end of the first resistor is connected with the output end of the current rectifying and wave filtering circuit, second end and described stagnant
The non-inverting input terminal for returning comparator is connected；
The first end of the second resistance is connected with the output end of the DC-DC converter, and second end and the hysteresis compare
The reversed phase input terminal of device is connected；
The first end of the 3rd resistor is connected with the non-inverting input terminal of the hysteresis loop comparator, second end ground connection；
The first end of 4th resistance is connected with the reversed phase input terminal of the hysteresis loop comparator, and second end is grounded；
The positive pressure limiting input terminal of the hysteresis loop comparator is connected with the output end of the DC-DC converter；The hysteresis ratio
Compared with the output end that the output end of device is first detection circuit.
5. flash switch detection circuit as claimed in claim 2, which is characterized in that second detection circuit includes the 5th electricity
Resistance, the 6th resistance, the second capacitor and switching device；
The first end of 5th resistance is connected with the output end of the DC-DC converter, second end and the 6th resistance
First end and the first end of the second capacitor be connected；The second end of 6th resistance and the second end of second capacitor
Ground connection；
The first end of the switching device is connected with the output end of the DC-DC converter, second end ground connection, third end and institute
State the second end electrical connection of the 5th resistance；And when the second end voltage of the 5th resistance is greater than predeterminated voltage, the switch
The first end and second end of device is connected；When the second end voltage of the 5th resistance is less than predeterminated voltage, the derailing switch
The first end and second end of part disconnects；The first end of the switching device is the output end of second detection circuit.
6. flash switch detection circuit as claimed in claim 5, which is characterized in that the switching device is NPN type triode；
The collector of the NPN type triode is connected with the output end of the DC-DC converter, emitter ground connection, base stage and described
The second end of 5th resistance is connected；
Or the switching device is NMOS tube；The drain electrode of the NMOS tube is connected with the output end of the DC-DC converter,
Source electrode ground connection, grid are connected with the second end of the 5th resistance.
7. flash switch detection circuit as claimed in claim 6, which is characterized in that second detection circuit further includes setting
The 7th resistance between the second end of the 5th resistance and the third end of the switching device.
8. flash switch detection circuit as claimed in claim 6, which is characterized in that second detection circuit further includes setting
The 8th resistance between the output end of the DC-DC converter and the first end of the switching device.
9. flash switch detection circuit as claimed in any one of claims 1 to 8, which is characterized in that further include input terminal and institute
AC power source electrical connection is stated, the flash switch that output end is connected with the input terminal of the current rectifying and wave filtering circuit.
10. flash switch detection circuit as claimed in claim 9, which is characterized in that the control circuit further includes for connecing
Receive the wireless communication module for switching the switching command of working condition of the power load.
11. a kind of Intelligent lamp, which is characterized in that switch detection electricity including flash as described in any one of claim 1 to 10
Road, drive module and lamp group；
The output end phase of the first input end of the drive module and the current rectifying and wave filtering circuit in the flash switch detection circuit
Connection, the second input terminal are connected with the output end of the control circuit, and output end is connected with the lamp group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/095557 WO2020011224A1 (en) | 2018-07-12 | 2019-07-11 | Flashoff switch detection circuit and electronic device including same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018107646732 | 2018-07-12 | ||
| CN201810764673.2A CN109041373A (en) | 2018-07-12 | 2018-07-12 | Flash switch detection circuit and Intelligent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109963394A true CN109963394A (en) | 2019-07-02 |
Family
ID=64640557
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810764673.2A Pending CN109041373A (en) | 2018-07-12 | 2018-07-12 | Flash switch detection circuit and Intelligent lamp |
| CN201920709481.1U Active CN210670688U (en) | 2018-07-12 | 2019-05-17 | Flash switch detection circuit and intelligent lamp |
| CN201910412314.5A Pending CN109963394A (en) | 2018-07-12 | 2019-05-17 | A kind of flash switch detection circuit and Intelligent lamp |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810764673.2A Pending CN109041373A (en) | 2018-07-12 | 2018-07-12 | Flash switch detection circuit and Intelligent lamp |
| CN201920709481.1U Active CN210670688U (en) | 2018-07-12 | 2019-05-17 | Flash switch detection circuit and intelligent lamp |
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Cited By (3)
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| CN110687475A (en) * | 2019-11-18 | 2020-01-14 | 珠海格力电器股份有限公司 | Remote fault diagnosis circuit, detection method and multi-split air conditioning unit |
| WO2020011224A1 (en) * | 2018-07-12 | 2020-01-16 | 青岛亿联客信息技术有限公司 | Flashoff switch detection circuit and electronic device including same |
| EP3817023A1 (en) * | 2019-11-01 | 2021-05-05 | Beijing Xiaomi Mobile Software Co., Ltd. | Flash switch on-off detection circuit and electronic device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019206263A1 (en) * | 2018-04-26 | 2019-10-31 | 青岛亿联客信息技术有限公司 | Intelligent lamp control system and detection circuit for temporary power-off switch thereof |
| CN109041373A (en) * | 2018-07-12 | 2018-12-18 | 青岛亿联客信息技术有限公司 | Flash switch detection circuit and Intelligent lamp |
| WO2020211113A1 (en) * | 2019-04-19 | 2020-10-22 | 青岛亿联客信息技术有限公司 | Intelligent lamp control system and flicker control circuit thereof |
| CN110049608B (en) * | 2019-06-04 | 2022-09-09 | 青岛亿联客信息技术有限公司 | Intelligent lamp and control method thereof |
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Also Published As
| Publication number | Publication date |
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| CN210670688U (en) | 2020-06-02 |
| CN109041373A (en) | 2018-12-18 |
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