CN110191549A - A kind of accurate time switch lamp of LED and its driving circuit of accurate timing - Google Patents
A kind of accurate time switch lamp of LED and its driving circuit of accurate timing Download PDFInfo
- Publication number
- CN110191549A CN110191549A CN201910600187.1A CN201910600187A CN110191549A CN 110191549 A CN110191549 A CN 110191549A CN 201910600187 A CN201910600187 A CN 201910600187A CN 110191549 A CN110191549 A CN 110191549A
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistance
- controller
- connect
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- 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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- 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
Abstract
The invention discloses a kind of driving circuits of accurate timing, comprising: for receiving exchange input, to the main power supply circuit of load supplying when in running order；It is connect with exchange input and controller, the alternating current signal detection circuit of impulse wave is converted to for input will to be exchanged；Controller, for after receiving the first timing signal, obtain corresponding first operating mode of the first timing signal, and the quantity of the impulse wave received by statistics determines statistics duration, the control signal for corresponding to statistics duration is issued to control circuit based on statistics duration, the first operating mode is met by the working condition that control circuit controls main power supply circuit；It is a length of when statistics to send at the time of controlling signal away from the duration passed through at the time of receiving the first timing signal；The control circuit being connect respectively with controller and main power supply circuit.Using the scheme of the application, be conducive to improve accuracy of timekeeping, disclosed herein as well is a kind of accurate time switch lamps of LED, have corresponding effect.
Description
Technical field
The present invention relates to timing circuit design fields, more particularly to a kind of accurate time switch lamp of LED and its essence
Driving circuit when certainly.
Background technique
Time switch lamp is a kind of lamp that switch time can be set in advance.Traditional time switch lamp is generally basede on crystal oscillator
It is timed, such as inexpensively, using the design of built-in crystal oscillator and single-chip microcontroller, for another example precision is some higher, using list
The design of piece machine and external crystal oscillator, design scheme also can use the design of single-chip microcontroller, external crystal oscillator and clock chip.
Since traditional scheme is all using crystal oscillator as main timing device, and the frequency of crystal oscillator is easy by external environment
The influence of temperature and deviate, cause the timing of crystal oscillator deviation occur, such as switch lamp is required to close at 9 points originally, it is practical
It is possible that turning off the light or delaying ahead of time the case where turning off the light when operation.In addition, in actual scene, it may be in different location cloth
Different time switch lamps is set, each switch lamp is controlled by different single-chip microcontrollers, when the temperature difference of different location, such as
Fruit needs to simultaneously close off these time switch lamps, due to the respective timing error of each switch lamp, it is easier to which appearance can not synchronize
The case where turning off the light.
It is current those skilled in the art technical problem urgently to be solved in conclusion how to improve accuracy of timekeeping.
Summary of the invention
The object of the present invention is to provide a kind of accurate time switch lamp of LED and its driving circuits of accurate timing, to improve
Accuracy of timekeeping.
In order to solve the above technical problems, the invention provides the following technical scheme:
A kind of driving circuit of accurate timing, comprising:
For receiving exchange input, the main power supply circuit being powered when in running order to load；
It is connect with exchange input and controller, for the exchange input to be converted to the AC signal of impulse wave
Detection circuit；Wherein, the period of the impulse wave is equal to the period of the exchange input；
The controller obtains first timing signal corresponding for after receiving the first timing signal
One operating mode, and statistics duration is determined by the quantity of impulse wave that statistics receives, based on the statistics duration to
Control circuit issues the control signal for corresponding to the statistics duration, controls the main power supply circuit by the control circuit
Working condition meets first operating mode；Wherein, distance connects at the time of a length of transmission control signal when the statistics
The duration passed through at the time of receiving first timing signal；
The control circuit being connect respectively with the controller and the main power supply circuit.
Preferably, first operating mode are as follows: after the controller receives first timing signal, the master
Power supply circuit is that load continuous power supply reaches preset first duration, and stops after reaching first duration as institute
State load supplying；
The controller is specifically used for: after receiving the first timing signal, it is corresponding to obtain first timing signal
First operating mode, and statistics duration is determined by the quantity of impulse wave that statistics receives, when the statistics
When duration is not greater than first duration, Xiang Suoshu control circuit issues the control signal of the first level state, when the statistics
When duration is greater than first duration, Xiang Suoshu control circuit issues the control signal of second electrical level state, passes through the control
The working condition of main power supply circuit described in circuit control meets first operating mode.
Preferably, the load includes N number of display device；
The main power supply circuit includes:
For receiving exchange input, and the current rectifying and wave filtering circuit for being rectified and being filtered；
It is all connected with the control circuit and the current rectifying and wave filtering circuit, is used for stabling current, and be in work shape
To the constant-current circuit for loading and being powered when state.
Preferably, further includes: connect with the current rectifying and wave filtering circuit and the controller, for the controller into
The controller power supply circuit of row power supply.
Preferably, the alternating current signal detection circuit includes: rectification part, second resistance and first switch circuit；
The input terminal of the rectification part with it is described exchange input zero curve or firewire connect, the rectification part it is defeated
Outlet is connect with the first end of the second resistance；
The first end of the second resistance is connect with the control terminal of the first switch circuit, and the second of the second resistance
End ground connection；
The first end of the first switch circuit is connect with the step-by-step counting end of the controller, the first switch circuit
Second end ground connection；
The rectification part includes the first resistor and first diode being connected in series, the first end of the first resistor
Input terminal as the input terminal of the rectification part or the anode of the first diode as the rectification part；
When exchange input is in positive half period, the step-by-step counting end of the controller is opened by described first
Circuit ground is closed, is low level state；When exchange input is in negative half-cycle, the step-by-step counting of the controller
End is high level state.
Preferably, the alternating current signal detection circuit further includes first capacitor, and the first switch circuit is the one or three pole
Pipe；
The first end of the first capacitor is connect with the first end of the second resistance, the second end of the first capacitor with
The second end of the second resistance connects；
Control terminal of the base stage of first triode as the first switch circuit, the current collection of first triode
First end of the pole as the first switch circuit, the emitter of first triode as the first switch circuit
Two ends.
Preferably, the control circuit includes: 3rd resistor and second switch circuit；
The first end of the 3rd resistor respectively with the control signal output of the controller and the second switch
The control terminal of circuit connects, the second end ground connection of the 3rd resistor；
The first end of the second switch circuit is connect with the enable end of the constant current chip in the constant-current circuit, and described
The second end of two switching circuits is grounded；
When the control signal of control signal output output is low level state, the second switch circuit
First end and the second switch circuit second end between end, the constant current chip is in running order so that described negative
Load is powered；
When the control signal of control signal output output is high level state, the second switch circuit
First end and the second switch circuit second end between be connected, the constant current chip is in off working state so that described
Load is not powered.
Preferably, the control circuit further includes the 4th resistance, and the second switch circuit is the second metal-oxide-semiconductor；
The control with the first end of the 3rd resistor and the controller respectively of the first end of 4th resistance
Signal output end connection processed, the second end of the 4th resistance are connect with the grid of second metal-oxide-semiconductor；
The source electrode of control terminal of the grid of second metal-oxide-semiconductor as the second switch circuit, second metal-oxide-semiconductor is made
For the second end of the second switch circuit, first end of the drain electrode of second metal-oxide-semiconductor as the second switch circuit.
Preferably, the constant-current circuit includes: the second diode, constant current chip, the 5th resistance, the second capacitor, the first electricity
Sense, the 6th resistance and the 7th resistance；
The enable end of the constant current chip is connect with the output end of the control circuit, the input terminal of the constant current chip with
First output end of the current rectifying and wave filtering circuit connects, and the first output end and second output terminal of the constant current chip are and institute
State the second diode anode connection, the third output end of the constant current chip respectively with the first end of the 6th resistance and
The first end of 7th resistance connects；
The second end of 6th resistance and the second end of the 7th resistance are grounded；
The cathode of second diode is connect with the first output end of the current rectifying and wave filtering circuit；
The first end of first inductance is connect with the anode of second diode, the second end point of first inductance
It is not connect with the second end of the second end of second capacitor and the 5th resistance；
The first end of second capacitor is connect with the first output end of the current rectifying and wave filtering circuit；
First output end of the first end of 5th resistance as the constant-current circuit, the second end of the 5th resistance
Second end output end as the constant-current circuit.
A kind of accurate time switch lamp of LED, the driving electricity including the described in any item accurate timings of such as preceding claim
Road.
In the scheme of the application, alternating current signal detection circuit is connect with exchange input and controller, defeated for that will exchange
Enter and is converted to impulse wave, the quantity for the impulse wave that controller can be received after receiving the first timing signal by statistics
Determine statistics duration, i.e. realization timing.Since controller is to carry out timing according to the frequency of exchange input, compared to temperature,
The frequency of exchange input is not easy to change, therefore is conducive to improve accuracy of timekeeping.Also, working as has multiple loads needs to pass through
When timing result is controlled, such as when needing to simultaneously close off multiple time switch lamps, if unified carried out by a controller
Control, be not in naturally can not close synchronously the case where, and even if being controlled respectively by different controllers, due to being to use
The exchange of identical frequency inputs, thus will not occur can not close synchronously the case where, that is, the frequency for exchanging input can't picture
Temperature is the same, is easy have different temperature values in different location, leads to the asynchronous of the control to different loads.Therefore, this Shen
Scheme please is based on exchange input and carries out timing, is conducive to improve accuracy of timekeeping.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of the driving circuit of accurate timing in the present invention；
Fig. 2 is the structural schematic diagram of the driving circuit of accurate timing in a kind of specific embodiment of the present invention.
Specific embodiment
Core of the invention is to provide a kind of driving circuit of accurate timing, is conducive to improve accuracy of timekeeping.
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.
Referring to FIG. 1, Fig. 1 is a kind of structural schematic diagram of the driving circuit of accurate timing in the present invention, the accurate timing
Driving circuit may include:
For receiving exchange input, the main power supply circuit 10 being powered when in running order to load.
Exchange input typically 220V, the alternating current of 50Hz can be the friendship of other forms certainly in specific occasion
Stream input, has no effect on implementation of the invention.But it should be recognized that since controller 30 is needed based on the impulse wave received
Quantity determine statistics duration, the period of impulse wave is equal to the period of exchange input again, therefore, the scheme of the application needs
The frequency of exchange input is known in advance.
The concrete form of main power supply circuit 10, which also can according to need, to be set, such as is supplied when load needs to receive exchange
When electric, main power supply circuit 10 can be AC-AC circuit, and for another example, the scheme of the application is usually applied in DC load, then main confession
Circuit 10 can be AC-DC circuit, further, it is also possible to which the defencive functions such as filter circuit are arranged on main power supply circuit 10.
When main power supply circuit 10 is in running order, available power supply is loaded, correspondingly, at main power supply circuit 10
When off working state, load is unable to get power supply, therefore, by controlling the state of main power supply circuit 10, can control negative
The power supply state of load, for example, load be headlamp when, can according to need control its light on and off.Load described herein, can be with
Including single power device, it is also possible to multiple power devices and is electrically connected constituted load, it can is multiple to use Denso
The combination for setting series connection and/or parallel connection, does not influence implementation of the invention.
It is connect with exchange input and controller 30, the alternating current signal detection electricity of impulse wave is converted to for input will to be exchanged
Road 20；Wherein, the period of impulse wave is equal to the period of exchange input.
Exchange input can be converted to impulse wave by alternating current signal detection circuit 20, namely be realized for exchange input
It counts, count value is every to increase by 1, just indicates that the duration of process increases the duration of exchange input a cycle.Alternating current signal detection
The specific composition of circuit 20, which can according to need, to be set and is adjusted, and is had no effect on implementation of the invention, be can be realized this Shen
Function please can be equal to the impulse wave of the frequency of exchange input to 30 output frequency of controller.
Controller 30, for after receiving the first timing signal, obtaining corresponding first work of the first timing signal
Mode, and the quantity of the impulse wave received by statistics determines statistics duration, is based on statistics duration to control circuit 40
The control signal for corresponding to statistics duration is issued, meets first by the working condition that control circuit 40 controls main power supply circuit 10
Operating mode；Wherein, passed through at the time of the first timing signal of distance reception at the time of a length of transmission control signal when statistics
Duration.
The control circuit 40 being connect respectively with controller 30 and main power supply circuit 10.
The concrete type and model of controller 30, which can according to need, to be set and is adjusted, such as can be chosen for into
This lower single-chip microcontroller, can for another example be chosen for relevant control chip with better function, to make more complicated operating mode.
Controller 30 can receive the first timing signal by relevant pins, and the first timing signal can be by input unit
It is sent, which can be the relatively simple multi gear bit switch of structure, and key switch etc., can also be can be with control
The other kinds of input unit that device 30 processed is communicated does not influence implementation of the invention, such as the specific embodiment of Fig. 2
In, input unit includes a three position switch S1 and the 8th resistance R8.
Controller 30 can receive different timing signals, when the timing signal difference received, the work that gets
Mode is typically different, certainly, the particular content of corresponding relationship and operating mode between timing signal and operating mode
To be set and be adjusted in advance.Indicate that controller 30 receives some timing and believes in the application with the first timing signal
Number.
Such as in a kind of specific embodiment of the invention, the first operating mode can be with specifically: connects in controller 30
After receiving the first timing signal, main power supply circuit 10 is that load continuous power supply reaches preset first duration, and is reaching first
Stop being load supplying after duration.The value of first duration, which also can according to need, to be set and is adjusted.
Under this kind of operating mode, controller 30 is specifically used for: after receiving the first timing signal, it is fixed to obtain first
When corresponding first operating mode of signal, and statistics duration is determined by the quantity of impulse wave that statistics receives, works as system
When timing length is not greater than the first duration, the control signal of the first level state is issued to control circuit 40, load works on, when
When counting duration greater than the first duration, the control signal of second electrical level state is issued to control circuit 40, load stops working, and leads to
It crosses control circuit 40 and controls the working condition of main power supply circuit 10 and meet the first operating mode.For example, the control of the first level state
Signal processed can be low level control signal, and the control signal of second electrical level state can be the control signal of high level.
It is a kind of more common setting, i.e. practical application for the setting of the first operating mode in this kind of embodiment
In, it is often necessary to the first duration for allowing loaded work piece to set automatically controls the closing of load again after reaching the first duration.Example
As Fig. 2 embodiment in, 3 kinds of operating modes can be disposed as such mode, the first duration is respectively set as 1h,
2h, 3h.Controller 30 is specially single-chip microcontroller U3 in Fig. 2, and three position switch S1 are dialed to and are drawn with No. 5 of the single-chip microcontroller U3 in Fig. 2
Foot connect when, the operating mode of acquisition are as follows: main power supply circuit 10 be load continuous power supply reaches 1 hour, and reach 1 hour it
Stop being load supplying afterwards.Correspondingly, three position switch S1 are dialed to when being connect with No. 6 pins of the single-chip microcontroller U3 in Fig. 2, obtain
The operating mode taken are as follows: main power supply circuit 10 is that load continuous power supply reaches 2 hours, and stops being negative after reaching 2 hours
Carry power supply.
Certainly, in addition to the common operating mode in previous embodiment, there can also be other more multiple in practical applications
Miscellaneous operating mode does not influence implementation of the invention.For example, controller 30 after receiving the first timing signal, obtains
To corresponding first operating mode are as follows: main power supply circuit 10 is that load continuous power supply reaches 1 hour, is stopped as load supplying, and
And when stopping reaching 1 hour for the duration of load supplying, continues power supply 1 hour, so recycle.
Controller 30 is receiving the first timing signal, after obtaining the first operating mode, can constantly carry out statistics duration
Calculating, statistics duration refer to send control signal at the time of distance receive the first timing signal at the time of passed through when
It is long.Controller 30 can issue the control signal for corresponding to statistics duration based on statistics duration to control circuit 40, to pass through
The working condition that control circuit 40 controls main power supply circuit 10 meets the first operating mode.
That is, control signal can change accordingly when the numerical value difference of calculated statistics duration, for example,
It receives the first timing signal, obtains in 1 hour after the first operating mode, export low level electric signal and load is obtained
Power supply, and more than 1 hour after persistently export high level signal make load be unable to get power supply.
Statistics duration is a constantly cumulative numerical value, a length of 0 when being counted when receiving the first timing signal, hereafter whenever
Controller 30 receives a pulse, and statistics duration just increases a unit time, which is to be equal to exchange input
The duration in period.For example, the frequency of China's alternating current is 50Hz, when the quantity for the impulse wave received that controller 30 counts is
When 10, when statistics, is 0.2 second a length of, when the quantity for the impulse wave received that controller 30 counts is 50, a length of 1 when statistics
Second.For another example, the ac frequency of Countries is 60Hz, then the quantity of the impulse wave received counted when controller 30 is 60
When, when statistics, is 1 second a length of.
Controller 30 meets the first operating mode by the working condition that control circuit 40 controls main power supply circuit 10.Control
The concrete form of circuit 40, which also can according to need, to be set and is adjusted, and the function of the application can be completed, can
According to the difference for the control signal that controller 30 is sent, the working condition of main power supply circuit 10 is adaptably adjusted.
In the scheme of the application, alternating current signal detection circuit is connect with exchange input and controller, defeated for that will exchange
Enter and is converted to impulse wave, the quantity for the impulse wave that controller can be received after receiving the first timing signal by statistics
Determine statistics duration, i.e. realization timing.Since controller is to carry out timing according to the frequency of exchange input, compared to temperature,
The frequency of exchange input is not easy to change, therefore is conducive to improve accuracy of timekeeping.Also, working as has multiple loads needs to pass through
When timing result is controlled, such as when needing to simultaneously close off multiple time switch lamps, if unified carried out by a controller
Control, be not in naturally can not close synchronously the case where, and even if being controlled respectively by different controllers, due to being to use
The exchange of identical frequency inputs, thus will not occur can not close synchronously the case where, that is, the frequency for exchanging input can't picture
Temperature is the same, is easy have different temperature values in different location, leads to the asynchronous of the control to different loads.Therefore, this Shen
Scheme please is based on exchange input and carries out timing, is conducive to improve accuracy of timekeeping.
In a kind of specific embodiment of the invention, load includes N number of display device；
Main power supply circuit 10 includes:
For receiving exchange input, and the current rectifying and wave filtering circuit for being rectified and being filtered；
It is all connected with control circuit 40 and current rectifying and wave filtering circuit, is used for stabling current, and when in running order pair
Load the constant-current circuit being powered.
N number of display device is specifically as follows the display devices such as the LED light of N number of electric connection, since time switch lamp is frequent
Need to preset the opening time of switch lamp, therefore the scheme of the application is widely used in this kind of occasion.Display dress
It sets and generallys use direct current supply, therefore, the main power supply circuit 10 in this kind of embodiment includes current rectifying and wave filtering circuit and constant current
Circuit.
Current rectifying and wave filtering circuit is used to carry out the pretreatment of electric current, that is, receives exchange input, and rectified and filtered.It is whole
The input of the output and constant-current circuit of flowing filter circuit connects, meanwhile, control circuit 40 is also connect with constant-current circuit, control circuit
40 can control the working condition of constant-current circuit, and constant-current circuit can be also used for stabling current.
In the embodiment of Fig. 2, current rectifying and wave filtering circuit is rectified by bridge rectifier module BD1, and is also set up
The second inductance L2, the 5th capacitor C5 and the resistance R0 in parallel with the second inductance L2 realizes filtering.The first of 5th capacitor C5
Hold the first output end as current rectifying and wave filtering circuit, the second end ground connection of the 5th capacitor C5.In addition, also in current rectifying and wave filtering circuit
Provided with fuse F1.
In a kind of specific embodiment of the invention, further includes: connect, use with current rectifying and wave filtering circuit and controller 30
In the controller power supply circuit being powered to controller 30.
In the specific implementation, controller 30 can be powered using various ways, such as passes through electrolytic capacitor, primary
Property battery etc. as power supply be that controller 30 is powered.For another example in this kind of embodiment, it is contemplated that controller 30 usually requires to receive
The direct current of 5V or 3.3V as power supply, therefore can by controller power supply circuit respectively with current rectifying and wave filtering circuit and control
Device 30 connects, specifically, the input of controller power supply circuit and the output of current rectifying and wave filtering circuit can be connected, adjustment voltage etc.
It is exported again after grade to the relevant pins of controller 30.
The physical circuit composition of controller power supply circuit can be set and be chosen according to actual needs, such as Fig. 2
The controller power supply circuit in a kind of concrete scene is shown in embodiment.In Fig. 2, controller power supply circuit includes the 9th
Resistance R9, the tenth resistance R10, third capacitor C3, the first zener diode ZD1, voltage stabilizing chip U2 and the 4th capacitor C4.
Specifically, the first end of the 9th resistance R9 is connect with firewire, i.e., it is defeated with first of bridge-type rectification module BD1 in Fig. 2
Outlet connection, the second end of the 9th resistance R9 are connect with the first end of the tenth resistance R10, the second end difference of the tenth resistance R10
With the first end of third capacitor C3, the input terminal connection of the cathode and voltage stabilizing chip U2 of the first zener diode ZD1；Third electricity
Hold the second end of C3, the anode of the first zener diode ZD1 and the ground terminal of voltage stabilizing chip U2 are grounded；Voltage stabilizing chip U2's
Output end is connect with No. 1 pin of the first end of the 4th capacitor C4 and single-chip microcontroller U3 respectively, the second termination of the 4th capacitor C4
Ground.
In a kind of specific embodiment of the invention, alternating current signal detection circuit 20 includes: rectification part, second resistance
R2 and first switch circuit；
The input terminal of rectification part is connect with the zero curve of exchange input or firewire, the output end of rectification part and the second electricity
Hinder the first end connection of R2；
The first end of second resistance R2 is connect with the control terminal of first switch circuit, the second end ground connection of second resistance R2；
The first end of first switch circuit is connect with the step-by-step counting end of controller 30, the second termination of first switch circuit
Ground；
Rectification part includes the first resistor R1 and first diode D1 being connected in series, and the first end of first resistor R1 is made
Input terminal for the input terminal of rectification part or the anode of first diode D1 as rectification part；
When exchange input is in positive half period, the step-by-step counting end of controller 30 is by first switch circuit ground
Low level state；When exchange input is in negative half-cycle, the step-by-step counting end of controller 30 is high level state.
In the embodiment of Fig. 2, input terminal of the first end of first resistor R1 as rectification part, first diode D1
Output end of the cathode as rectification part.As can be seen that when exchange input is in positive half period, the control of first switch circuit
Voltage difference between end processed and the second end of first switch circuit is the voltage of second resistance R2, and the first of first switch circuit
It being connected between end and the second end of first switch circuit, the step-by-step counting end of controller 30 will pass through first switch circuit ground,
It is at this time low level state.Correspondingly, the first end of first switch circuit is height at this time when exchange input is in negative half-cycle
It is not turned between level state, the i.e. first end of first switch circuit and the second end of first switch circuit.
The concrete form of first switch circuit, which can according to need, to be set and is adjusted, such as in the embodiment of Fig. 2,
First switch circuit be the first triode Q1, control terminal of the base stage of the first triode Q1 as first switch circuit, the one or three
First end of the collector of pole pipe Q1 as first switch circuit, the emitter of the first triode Q1 is as first switch circuit
Second end.In addition, first switch circuit is also possible to other kinds of transistor, such as metal-oxide-semiconductor etc..
Further, in the specific implementation, alternating current signal detection circuit 20 can also include first capacitor C1, first capacitor
The first end of C1 is connect with the first end of second resistance R2, and the second end of first capacitor C1 and the second end of second resistance R2 connect
It connects, clamper is carried out to voltage by first capacitor C1, be conducive to avoid to damage first switch circuit when overtension, while also having
Lead to the miscount situation of controller 30 conducive to voltage fluctuation.
The collector of first triode Q1 connects as the first end of first switch circuit and the step-by-step counting end of controller 30
Connect, the step-by-step counting end of controller 30 is No. 3 pins of the single-chip microcontroller U3 in Fig. 2, and No. 1 pin of single-chip microcontroller U3 respectively with
The second end connection of the output end and eleventh resistor R11 of voltage stabilizing chip U2, the first end of eleventh resistor R11 and the one or three
The collector of pole pipe Q1 connects.No. 2 pins of single-chip microcontroller U3 are connect as control signal output with control circuit 40.
In a kind of specific embodiment of the invention, control circuit 40 includes: 3rd resistor R3 and second switch circuit；
The control with the control signal output of controller 30 and second switch circuit respectively of the first end of 3rd resistor R3
End connection processed, the second end ground connection of 3rd resistor R3；
The enable end of constant current chip in the first end and constant-current circuit of second switch circuit connects, second switch circuit
Second end ground connection；
When the control signal of control signal output output is low level state, the first end of second switch circuit and the
End between the second end of two switching circuits, constant current chip is in running order so that load is powered；
When the control signal of control signal output output is high level state, the first end of second switch circuit and the
It is connected between the second end of two switching circuits, constant current chip is in off working state so that load is not powered.
In this kind of embodiment, control circuit 40 is made of 3rd resistor R3 and second switch circuit, and circuit structure is simple,
It is convenient to carry out.Certainly, in other embodiments, there can be the control circuit 40 of other forms completely, such as can be when control
When the control signal of signal output end output processed is low level state, control circuit 40 controls constant current chip and is in inoperative shape
State.
Metal-oxide-semiconductor is voltage controlling device, therefore in the specific implementation, second switch circuit can usually be chosen for Fig. 2
In the second metal-oxide-semiconductor Q2, specifically, control terminal of the grid of the second metal-oxide-semiconductor Q2 as second switch circuit, the second metal-oxide-semiconductor Q2
Second end of the source electrode as second switch circuit, first end of the drain electrode of the second metal-oxide-semiconductor Q2 as second switch circuit.When
So, in other embodiments, the switching tube of other forms also can be set as second switch circuit, can be realized to constant current
The control of circuit has no effect on implementation of the invention.
In addition, the 4th resistance R4 is also provided in control circuit 40 in the embodiment of Fig. 2, specifically, the 4th resistance R4
First end connect respectively with the control signal output of the first end of 3rd resistor R3 and controller 30, the control of controller 30
Signal output end processed is No. 2 pins of U3, and the second end of the 4th resistance R4 is connect with the grid of the second metal-oxide-semiconductor Q2.Due to setting
The 4th resistance R4 has been set, has been conducive to protect the second metal-oxide-semiconductor Q2 when the second metal-oxide-semiconductor Q2 is connected, second can also be reduced
The power consumption of metal-oxide-semiconductor Q2.
In a kind of specific embodiment of the invention, constant-current circuit includes: the second diode D2, constant current chip U1, the
Five resistance R5, the second capacitor C2, the first inductance L1, the 6th resistance R6 and the 7th resistance R7；
The enable end of constant current chip U1 is connect with the output end of control circuit 40, and the input terminal of constant current chip U1 and rectification are filtered
First output end of wave circuit connects, and the first output end and second output terminal of constant current chip U1 is with the second diode D2's
Anode connection, the third output end of the constant current chip U1 first end with the first end of the 6th resistance R6 and the 7th resistance R7 respectively
Connection；
The second end of 6th resistance R6 and the second end of the 7th resistance R7 are grounded；
The cathode of second diode D2 and the first output end of current rectifying and wave filtering circuit connect；
The first end of first inductance L1 is connect with the anode of the second diode D2, and the second end of the first inductance L1 is respectively with
The second end of two capacitor C2 is connected with the second end of the 5th resistance R5；
The first end of second capacitor C2 and the first output end of current rectifying and wave filtering circuit connect；
First output end of the first end of 5th resistance R5 as constant-current circuit, the second end of the 5th resistance R5 is as constant current
The second end output end of circuit.
In the embodiment of Fig. 2, the enable end of constant current chip U1 refers to its No. 2 pins, correspondingly, constant current chip U1
First output end, second output terminal and third output end successively refer to its No. 5 pins, No. 6 pins and No. 7 pins, permanent
The input terminal of stream chip U1 refers to its No. 4 pins.As can be seen that this kind of embodiment in, the enable end of constant current chip U1 with
The output end of control circuit 40 connects, therefore control circuit 40 can change the work of constant current chip by the level state exported
State.When constant current chip is in running order, in the embodiment of Fig. 2, No. 4 pins and No. 5 pins of constant current chip U1 with
And No. 6 pins are both turned on, and enable constant-current circuit to load supplying.Correspondingly, when control circuit 40 controls at constant current chip
When off working state, in the embodiment of Fig. 2, No. 4 pins and No. 5 pins and No. 6 pins of constant current chip are turned off, and are made
Obtain power supply of the constant-current circuit stopping to load.
It, can be with the embodiment of the invention also provides a kind of accurate time switch lamp of LED corresponding to above method embodiment
Driving circuit including the accurate timing in any of the above-described embodiment, can be with cross-referenced, not repeated explanation herein above.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including element.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand technical solution of the present invention and its core concept.It should be pointed out that for the common of the art
, without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for technical staff, these
Improvement and modification are also fallen within the protection scope of the claims of the present invention.
Claims (10)
1. a kind of driving circuit of accurate timing characterized by comprising
For receiving exchange input, the main power supply circuit being powered when in running order to load；
It is connect with exchange input and controller, for the exchange input to be converted to the alternating current signal detection of impulse wave
Circuit；Wherein, the period of the impulse wave is equal to the period of the exchange input；
The controller, for after receiving the first timing signal, obtaining corresponding first work of first timing signal
Operation mode, and the quantity of the impulse wave received by statistics determines statistics duration, is based on the statistics duration to control
Circuit issues the control signal for corresponding to the statistics duration, and the work of the main power supply circuit is controlled by the control circuit
State meets first operating mode；Wherein, distance receives institute at the time of a length of transmission control signal when the statistics
The duration passed through at the time of stating the first timing signal；
The control circuit being connect respectively with the controller and the main power supply circuit.
2. the driving circuit of accurate timing according to claim 1, which is characterized in that first operating mode are as follows:
After the controller receives first timing signal, the main power supply circuit is that load continuous power supply reaches preset
First duration, and stop being the load supplying after reaching first duration；
The controller is specifically used for: after receiving the first timing signal, obtaining the corresponding institute of first timing signal
The first operating mode is stated, and the quantity of the impulse wave received by statistics determines statistics duration, when the statistics duration
When not being greater than first duration, Xiang Suoshu control circuit issues the control signal of the first level state, when the statistics duration
When greater than first duration, Xiang Suoshu control circuit issues the control signal of second electrical level state, passes through the control circuit
The working condition for controlling the main power supply circuit meets first operating mode.
3. the driving circuit of accurate timing according to claim 1, which is characterized in that the load includes that N number of display fills
It sets；
The main power supply circuit includes:
For receiving exchange input, and the current rectifying and wave filtering circuit for being rectified and being filtered；
It is all connected with the control circuit and the current rectifying and wave filtering circuit, is used for stabling current, and when in running order
To the constant-current circuit for loading and being powered.
4. the driving circuit of accurate timing according to claim 3, which is characterized in that further include: with the rectifying and wave-filtering
Circuit and controller connection, the controller power supply circuit for being powered to the controller.
5. the driving circuit of accurate timing according to claim 1, which is characterized in that the alternating current signal detection circuit packet
It includes: rectification part, second resistance and first switch circuit；
The input terminal of the rectification part is connect with the zero curve of the exchange input or firewire, the output end of the rectification part
It is connect with the first end of the second resistance；
The first end of the second resistance is connect with the control terminal of the first switch circuit, the second termination of the second resistance
Ground；
The first end of the first switch circuit is connect with the step-by-step counting end of the controller, and the of the first switch circuit
Two ends ground connection；
The rectification part includes the first resistor and first diode being connected in series, the first end conduct of the first resistor
The input terminal of the input terminal of the rectification part or the anode of the first diode as the rectification part；
When exchange input is in positive half period, the step-by-step counting end of the controller passes through the first switch electricity
Road ground connection is low level state；When exchange input is in negative half-cycle, the step-by-step counting end of the controller is
High level state.
6. the driving circuit of accurate timing according to claim 5, which is characterized in that the alternating current signal detection circuit is also
Including first capacitor, the first switch circuit is the first triode；
The first end of the first capacitor is connect with the first end of the second resistance, the second end of the first capacitor with it is described
The second end of second resistance connects；
The collector of control terminal of the base stage of first triode as the first switch circuit, first triode is made
For the first end of the first switch circuit, the emitter of first triode as the first switch circuit second
End.
7. the driving circuit of accurate timing according to claim 3, which is characterized in that the control circuit includes: third
Resistance and second switch circuit；
The first end of the 3rd resistor respectively with the control signal output of the controller and the second switch circuit
Control terminal connection, the 3rd resistor second end ground connection；
The first end of the second switch circuit is connect with the enable end of the constant current chip in the constant-current circuit, and described second opens
The second end on powered-down road is grounded；
When the control signal of control signal output output is low level state, the of the second switch circuit
End between one end and the second end of the second switch circuit, the constant current chip is in running order so that described load
To power supply；
When the control signal of control signal output output is high level state, the of the second switch circuit
It is connected between one end and the second end of the second switch circuit, the constant current chip is in off working state so that the load
It is not powered.
8. the driving circuit of accurate timing according to claim 7, which is characterized in that the control circuit further includes the 4th
Resistance, the second switch circuit are the second metal-oxide-semiconductor；
The first end of 4th resistance is believed with the control of the first end of the 3rd resistor and the controller respectively
The connection of number output end, the second end of the 4th resistance are connect with the grid of second metal-oxide-semiconductor；
Control terminal of the grid of second metal-oxide-semiconductor as the second switch circuit, the source electrode of second metal-oxide-semiconductor is as institute
State the second end of second switch circuit, first end of the drain electrode of second metal-oxide-semiconductor as the second switch circuit.
9. the driving circuit of accurate timing according to claim 3, which is characterized in that the constant-current circuit includes: second
Diode, constant current chip, the 5th resistance, the second capacitor, the first inductance, the 6th resistance and the 7th resistance；
The enable end of the constant current chip is connect with the output end of the control circuit, the input terminal of the constant current chip with it is described
First output end of current rectifying and wave filtering circuit connects, and the first output end and second output terminal of the constant current chip are with described the
The anodes of two diodes connects, the third output end of the constant current chip respectively with the first end of the 6th resistance and described
The first end of 7th resistance connects；
The second end of 6th resistance and the second end of the 7th resistance are grounded；
The cathode of second diode is connect with the first output end of the current rectifying and wave filtering circuit；
The first end of first inductance is connect with the anode of second diode, the second end of first inductance respectively with
The second end of second capacitor is connected with the second end of the 5th resistance；
The first end of second capacitor is connect with the first output end of the current rectifying and wave filtering circuit；
First output end of the first end of 5th resistance as the constant-current circuit, the second end conduct of the 5th resistance
The second end output end of the constant-current circuit.
10. a kind of accurate time switch lamp of LED, which is characterized in that including as described in any one of claim 1 to 9 precisely fixed
When driving circuit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910600187.1A CN110191549B (en) | 2019-07-04 | 2019-07-04 | LED (light emitting diode) accurate timing switch lamp and accurate timing drive circuit thereof |
| PCT/CN2019/107407 WO2021000433A1 (en) | 2019-07-04 | 2019-09-24 | Precise timing switch led lamp, and precise timing drive circuit for same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910600187.1A CN110191549B (en) | 2019-07-04 | 2019-07-04 | LED (light emitting diode) accurate timing switch lamp and accurate timing drive circuit thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110191549A true CN110191549A (en) | 2019-08-30 |
| CN110191549B CN110191549B (en) | 2021-03-09 |
Family
ID=67725030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910600187.1A Active CN110191549B (en) | 2019-07-04 | 2019-07-04 | LED (light emitting diode) accurate timing switch lamp and accurate timing drive circuit thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110191549B (en) |
| WO (1) | WO2021000433A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110740552A (en) * | 2019-10-20 | 2020-01-31 | 北京芯思电子有限公司 | Timing electronic switch circuit and timing control method |
| WO2021000433A1 (en) * | 2019-07-04 | 2021-01-07 | 浙江阳光美加照明有限公司 | Precise timing switch led lamp, and precise timing drive circuit for same |
| CN112738947A (en) * | 2019-10-15 | 2021-04-30 | 松下知识产权经营株式会社 | Lighting circuit and synchronization method thereof |
| CN112752376A (en) * | 2021-02-06 | 2021-05-04 | 漳州立达信光电子科技有限公司 | Multi-control switch circuit |
| CN113365387A (en) * | 2020-03-02 | 2021-09-07 | 科斯莫灯饰公司 | Light-emitting controller with multiple light-emitting modes for lamp string, control method and lamp string assembly |
| CN113899062A (en) * | 2021-10-14 | 2022-01-07 | 熊先辉 | School toilet LED lighting and ventilation control circuit |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113038660B (en) * | 2021-04-21 | 2023-08-29 | 嘉兴市光泰照明有限公司 | LED turns to auxiliary lighting lamp control circuit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062929A (en) * | 2013-03-22 | 2014-09-24 | 鸿富锦精密工业(武汉)有限公司 | Fixed-time switching on/off control system |
| CN105682295A (en) * | 2016-03-21 | 2016-06-15 | 上海东软载波微电子有限公司 | Light emitting diode (LED) control circuit |
| CN206075043U (en) * | 2016-06-08 | 2017-04-05 | 王安 | A kind of power supply with timing on-off function |
| EP3185257A1 (en) * | 2015-12-25 | 2017-06-28 | Omron Corporation | Timer apparatus |
| CN207869446U (en) * | 2017-12-29 | 2018-09-14 | 江阴旺达电子有限公司 | A kind of great power LED intelligent driver |
| CN109039305A (en) * | 2018-08-02 | 2018-12-18 | 黄琦 | A kind of circuit generating clock pulse signal based on alternating current |
| CN109287032A (en) * | 2018-10-15 | 2019-01-29 | 深圳市力生美半导体股份有限公司 | Based on the time-controlled Christmas lamp of mains frequency |
| CN208739458U (en) * | 2018-08-16 | 2019-04-12 | 宁波亚达电器有限公司 | A kind of timing circuit using power frequency as clock source |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1359255A (en) * | 2000-12-18 | 2002-07-17 | 刘英彰 | Digital type light-adjusting circuit |
| CN2634785Y (en) * | 2003-06-07 | 2004-08-18 | 金以城 | Intelligent light regulator |
| CN100397263C (en) * | 2004-09-01 | 2008-06-25 | 庞浩 | Electric power regulating method and its system with timing function |
| JP4430084B2 (en) * | 2007-02-28 | 2010-03-10 | シャープ株式会社 | LED light emitting device, and device and lamp using the LED light emitting device |
| CN110191549B (en) * | 2019-07-04 | 2021-03-09 | 浙江阳光美加照明有限公司 | LED (light emitting diode) accurate timing switch lamp and accurate timing drive circuit thereof |
-
2019
- 2019-07-04 CN CN201910600187.1A patent/CN110191549B/en active Active
- 2019-09-24 WO PCT/CN2019/107407 patent/WO2021000433A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062929A (en) * | 2013-03-22 | 2014-09-24 | 鸿富锦精密工业(武汉)有限公司 | Fixed-time switching on/off control system |
| EP3185257A1 (en) * | 2015-12-25 | 2017-06-28 | Omron Corporation | Timer apparatus |
| CN105682295A (en) * | 2016-03-21 | 2016-06-15 | 上海东软载波微电子有限公司 | Light emitting diode (LED) control circuit |
| CN206075043U (en) * | 2016-06-08 | 2017-04-05 | 王安 | A kind of power supply with timing on-off function |
| CN207869446U (en) * | 2017-12-29 | 2018-09-14 | 江阴旺达电子有限公司 | A kind of great power LED intelligent driver |
| CN109039305A (en) * | 2018-08-02 | 2018-12-18 | 黄琦 | A kind of circuit generating clock pulse signal based on alternating current |
| CN208739458U (en) * | 2018-08-16 | 2019-04-12 | 宁波亚达电器有限公司 | A kind of timing circuit using power frequency as clock source |
| CN109287032A (en) * | 2018-10-15 | 2019-01-29 | 深圳市力生美半导体股份有限公司 | Based on the time-controlled Christmas lamp of mains frequency |
Non-Patent Citations (3)
| Title |
|---|
| 何希才: "《稳压电源电路的设计与应用》", 28 February 2006 * |
| 朱玉龙: "《汽车电子硬件设计》", 31 October 2011 * |
| 贺良华: "《现代检测技术》", 30 September 2008 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021000433A1 (en) * | 2019-07-04 | 2021-01-07 | 浙江阳光美加照明有限公司 | Precise timing switch led lamp, and precise timing drive circuit for same |
| CN112738947A (en) * | 2019-10-15 | 2021-04-30 | 松下知识产权经营株式会社 | Lighting circuit and synchronization method thereof |
| CN112738947B (en) * | 2019-10-15 | 2023-08-22 | 松下知识产权经营株式会社 | Lighting circuit and synchronization method thereof |
| CN110740552A (en) * | 2019-10-20 | 2020-01-31 | 北京芯思电子有限公司 | Timing electronic switch circuit and timing control method |
| CN113365387A (en) * | 2020-03-02 | 2021-09-07 | 科斯莫灯饰公司 | Light-emitting controller with multiple light-emitting modes for lamp string, control method and lamp string assembly |
| CN112752376A (en) * | 2021-02-06 | 2021-05-04 | 漳州立达信光电子科技有限公司 | Multi-control switch circuit |
| CN112752376B (en) * | 2021-02-06 | 2023-10-13 | 漳州立达信光电子科技有限公司 | Multi-control switch circuit |
| CN113899062A (en) * | 2021-10-14 | 2022-01-07 | 熊先辉 | School toilet LED lighting and ventilation control circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021000433A1 (en) | 2021-01-07 |
| CN110191549B (en) | 2021-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110191549A (en) | A kind of accurate time switch lamp of LED and its driving circuit of accurate timing | |
| CN102843025B (en) | Control circuit, control method, and power supply system for power factor correction (PFC) circuit | |
| CN103281849A (en) | Light-adjusting device and method of LED illuminating lamp | |
| CN103312130B (en) | A kind of Bidirectional thyristor trigger circuit and method | |
| CN101420813A (en) | Digital addressable illumination control system and method thereof | |
| CN103687217A (en) | Switching and dimming LED driving circuit | |
| CN103813593A (en) | Novel high-energy-saving automatic light adjustment LED (light emitting diode) street lamp | |
| CN103716952B (en) | A kind of LED switch power supply and control method thereof | |
| CN104635042A (en) | Electric energy acquisition module used for intelligent home | |
| CN102545580A (en) | In-system programming universal PFC multifunctional processor | |
| CN208210373U (en) | A kind of synchronous color lamp | |
| CN102811535B (en) | Ultra-High Efficiency LED constant current power supply based on single stage shift controlled rectification | |
| CN209231858U (en) | A kind of system in case of system halt charging reset circuit | |
| CN102882389B (en) | Constant current source | |
| CN204045189U (en) | Small size color screen backlight control circuit | |
| CN103607817B (en) | A kind of mixing dimming control system | |
| CN203466998U (en) | Illumination automatically constant system | |
| CN106160559A (en) | There is the pure sine wave inverter of high frequency chopping current sample input isolation features | |
| CN202014393U (en) | LED (light-emitting diode) power supply dimming control device | |
| CN206640838U (en) | A kind of non-isolation type tunable optical constant-current LED driver | |
| CN201298954Y (en) | Digital addressable lighting control system | |
| CN114299737B (en) | Synchronous timing signal generating device for internet connection signal lamp | |
| CN104298116A (en) | Intelligent home equipment | |
| CN204462250U (en) | For the electric energy collection module of Smart Home | |
| CN207427531U (en) | A kind of four-in-one dimming LED drive circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |