CN202738204U - Dimming circuit with dimming wire and dimming control module - Google Patents
Dimming circuit with dimming wire and dimming control module Download PDFInfo
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- CN202738204U CN202738204U CN 201220390697 CN201220390697U CN202738204U CN 202738204 U CN202738204 U CN 202738204U CN 201220390697 CN201220390697 CN 201220390697 CN 201220390697 U CN201220390697 U CN 201220390697U CN 202738204 U CN202738204 U CN 202738204U
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Abstract
An embodiment of the utility model provides a dimming circuit with a dimming wire and a dimming control module. The dimming circuit comprises: a mechanical switch connected with a power supply; an LED (Light Emitting Diode) driver connected with the mechanical switch; and the dimming control module, wherein one input end of the dimming control module is connected with an auxiliary power line of the LED driver, the other input end of the dimming control module is connected with a signal ground wire of the LED driver, when the dimming control module detects that the LED driver starts, the dimming control module controls a voltage amplitude output by an output end thereof to be a preset voltage amplitude, when the dimming control module detects that preset times of quick changes occur on the voltage of the auxiliary power line, the dimming control module controls the voltage amplitude output by the output end thereof to change according to a preset rule, one output end of the dimming control module is connected with the dimming wire of the LED driver. The dimming circuit provided by the embodiment of the utility model can realize an 'ON-OFF' dimming function of the LED driver dimming circuit with the dimming wire, save electric energy, and prolong the service life of an LED load.
Description
Technical field
The utility model relates to circuit field, relates in particular a kind of light adjusting circuit with the light modulation line and dimming controlling module.
Background technology
Along with the development of green solid lighting source LED technology, LED becomes the development trend of following illumination gradually.The outstanding advantage of LED is: LED can light modulation.The brightness of the light modulation of LED lamp being accused led light source processed changes, because the LED lamp is controlled by the led driver with dimming function.
Fig. 1 is the circuit diagram with the light adjusting circuit of light modulation line Dim, as shown in Figure 1, led driver 101 links to each other with power supply 102 by mechanical switch S1, and led driver 101 has positive output line Vo+, negative output line Vo-, auxiliary power supply line Vcc, light modulation line Dim and signal ground GND.Wherein positive output line Vo+ is connected LED load A1 with negative output line Vo-, can an external voltage signal (such as the voltage signal of 0-10V) between light modulation line Dim and the signal ground GND, after switch S 1 closure, led driver 101 beginning driving LED load A1 illuminations, after led driver 101 detects voltage magnitude between light modulation line Dim and the signal ground GND and changes, the brightness of control LED load A1 changes, thereby reaches the purpose of light modulation, and LED load A1 extinguishes after mechanical switch S1 disconnects.
Just be used for controlling the startup of led driver 101 and closing with mechanical switch S1 in the light adjusting circuit of light modulation line Dim, in application scenes, need state by mechanical switch S1 in Preset Time by closure state to off-state and again by off-state to closure state (i.e. the once fast action of " disconnection-closure " of the carrying out of mechanical switch S1 in Preset Time), regulate the brightness of LED load A1, namely mechanical switch S1 is carried out once fast the action of " disconnection-closure ", the curent change of LED load, be the quick acting of the luminosity response mechanical switch S1 of light source, this dimming function is called " ON-OFF " dimming function.
Only have the voltage magnitude between light modulation line Dim and earth connection GND to change in the light adjusting circuit with light modulation line Dim, the brightness that just can control LED load A1 changes, because light modulation line Dim can not respond mechanical switch S 1 action, so do not possess the function of " ON-OFF " light modulation with the light adjusting circuit of light modulation line Dim.
The utility model content
In view of this, it is a kind of with light modulation line light adjusting circuit and dimming controlling module that the utility model provides, to realize " ON-OFF " dimming function with the light adjusting circuit of light modulation line.
For achieving the above object, the utility model provides following technical scheme:
A kind of light adjusting circuit with the light modulation line comprises:
The mechanical switch that links to each other with power supply;
Link to each other with described mechanical switch, have the led driver of auxiliary power supply line, light modulation line and signal ground;
One input links to each other with the auxiliary power supply line of described led driver, another input links to each other with the signal ground of described led driver, when detecting described led driver and opening machine, the voltage magnitude of controlling its output output is the predeterminated voltage amplitude, detect described auxiliary power supply line and power on Hair Fixer when giving birth to the quick variation of preset times, control the voltage magnitude of its output output according to the dimming controlling module of default rule variation, one output of described dimming controlling module links to each other with the light modulation line of described led driver, another output links to each other with the signal ground of described led driver, described quick variation refers to be reduced to low level by high level in Preset Time, be increased to high level by low level again, the maximum current that led driver output current corresponding to described predeterminated voltage amplitude exported less than described led driver.
A kind of dimming controlling module, be applied in the light adjusting circuit with the light modulation line, described light adjusting circuit comprises: led driver, described led driver comprises: auxiliary power supply line, signal ground and light modulation line, one input of described dimming controlling module links to each other with the auxiliary power supply line of described led driver, another input links to each other with the signal ground of described led driver, and an output links to each other with the light modulation line of described led driver, and another output links to each other with the signal ground of described led driver;
When described dimming controlling module opens machine for detecting described led driver, the voltage magnitude of controlling its output output is the predeterminated voltage amplitude, detect described auxiliary power supply line and power on Hair Fixer when giving birth to the quick variation of preset times, control the voltage magnitude of its output output according to the dimming controlling module of default rule variation, described quick variation refers to be reduced to low level by high level in Preset Time, be increased to high level by low level again, the maximum current that led driver output current corresponding to described predeterminated voltage amplitude exported less than described led driver.
Wherein, described default rule is that voltage that the voltage magnitude of described dimming controlling module output reduces/raise a voltage magnitude grade, the output of described dimming controlling module raise continuously/the reduces voltage continuous separate grade of variations, the output of described dimming controlling module raises/reduces and changes or voltage cycle variation that described dimming controlling module is exported.
Wherein, described dimming controlling module specifically comprises:
One input links to each other with the auxiliary power supply line of described led driver, another input links to each other with the signal ground of described led driver, detecting described auxiliary power supply line powers on when Hair Fixer is living to be changed fast, the first detection signal of respective change is carried out in control output end output, detects the first detecting unit of exporting the second detection signal when described led driver opens machine;
Input links to each other with the output of described the first detecting unit, when receiving described the second detection signal, export corresponding the second control signal, record described the first detecting unit and export the change frequency of the first detection signal, and export the first logical block of corresponding the first control signal according to the change frequency of record;
Input links to each other with the output of described the first logical block, according to described the second control signal, the voltage magnitude of control output is the predeterminated voltage amplitude, according to the output unit of described the first control signal control output according to the voltage magnitude of described default rule variation, one output of described output unit links to each other with the light modulation line of described led driver, and another output links to each other with the signal ground of described led driver.
Wherein, described dimming controlling module also comprises:
One input links to each other with the auxiliary power supply line of described led driver, another input links to each other with the signal ground of described led driver, detect when voltage regulation changes for N time fast on the described auxiliary power supply line, the second detecting unit of the 3rd detection signal of respective change is carried out in control output end output, and N is the positive integer greater than described preset times;
Input links to each other with the output of described the second detecting unit, records the change frequency that described the second detecting unit is exported the 3rd detection signal, and exports the second logical block of corresponding the 3rd control signal according to the change frequency of record;
Input links to each other with the output of described the second logical block, control the control unit that the voltage magnitude of described output unit output stops to change according to described the 3rd control signal, one output of described control unit links to each other with described output unit, and another output links to each other with the signal ground of described led driver.
A kind of light adjusting circuit with the light modulation line comprises:
The mechanical switch that links to each other with power supply;
Link to each other with described mechanical switch, have the led driver of light modulation line and signal ground;
One end links to each other with the light modulation line of described led driver, the other end links to each other with the signal ground of described led driver, when detecting described led driver and opening machine, the voltage magnitude of controlling its two ends output is the predeterminated voltage amplitude, detect described light modulation line and power on Hair Fixer when giving birth to the quick variation of preset times, control the voltage magnitude of its two ends output according to the dimming controlling module of default rule variation, one output of described dimming controlling module links to each other with the light modulation line of described led driver, another output links to each other with the signal ground of described led driver, described quick variation refers to be reduced to low level by high level in Preset Time, be increased to high level by low level again, the maximum current that led driver output current corresponding to described predeterminated voltage amplitude exported less than described led driver.
A kind of dimming controlling module, be applied in the light adjusting circuit with the light modulation line, described light adjusting circuit comprises: led driver, described led driver comprises: signal ground and light modulation line, one end of described dimming controlling module links to each other with the light modulation line of described led driver, and the other end links to each other with the signal ground of described led driver;
When described dimming controlling module opens machine for detecting described led driver, the voltage magnitude of controlling its two ends output is the predeterminated voltage amplitude, detect described light modulation line and power on Hair Fixer when giving birth to the quick variation of preset times, control the voltage magnitude of its two ends output according to the dimming controlling module of default rule variation, described quick variation refers to be reduced to low level by high level in Preset Time, be increased to high level by low level again, the maximum current that led driver output current corresponding to described predeterminated voltage amplitude exported less than described led driver.
Wherein, described default rule is that voltage that the voltage magnitude of described dimming controlling module output reduces/raise a voltage magnitude grade, the output of described dimming controlling module raise continuously/the reduces voltage continuous separate grade of variations, the output of described dimming controlling module raises/reduces and changes or voltage cycle variation that described dimming controlling module is exported.
Wherein, described dimming controlling module specifically comprises:
One input links to each other with the light modulation line of described led driver, another input links to each other with the signal ground of described led driver, detecting described light modulation line powers on when Hair Fixer is living to be changed fast, the first detection signal of respective change is carried out in control output end output, detects the first detecting unit of exporting the second detection signal when described led driver opens machine;
Input links to each other with the output of described the first detecting unit, when receiving described the second detection signal, export corresponding the second control signal, record described the first detecting unit and export the change frequency of the first detection signal, and export the first logical block of corresponding the first control signal according to the change frequency of record;
Input links to each other with the output of described the first logical block, according to described the second control signal, the voltage magnitude of control output is the predeterminated voltage amplitude, according to the output unit of described the first control signal control output according to the voltage magnitude of described default rule variation, one output of described output unit links to each other with the light modulation line of described led driver, and another output links to each other with the signal ground of described led driver.
Wherein, described dimming controlling module also comprises:
One input links to each other with the light modulation line of described led driver, another input links to each other with the signal ground of described led driver, detect when voltage regulation changes for N time fast on the described light modulation line, the second detecting unit of the 3rd detection signal of respective change is carried out in control output end output, and N is the positive integer greater than described preset times;
Input links to each other with the output of described the second detecting unit, records the change frequency that described the second detecting unit is exported the 3rd detection signal, and exports the second logical block of corresponding the 3rd control signal according to the change frequency of record;
Input links to each other with the output of described the second logical block, control the control unit that the voltage magnitude of described output unit output stops to change according to described the 3rd control signal, one output of described control unit links to each other with described output unit, and another output links to each other with the signal ground of described led driver.
Via above-mentioned technical scheme as can be known, adopt the utility model embodiment, fast-changing number of times occurs in the voltage that detects on the auxiliary power supply line by dimming controlling module, when fast-changing number of times arrives preset times, the voltage magnitude of dimming controlling module control output end output is according to default rule conversion, thereby the brightness that makes light source begins to change according to default rule, thereby realized " ON-OFF " dimming function with the led driver light adjusting circuit of light modulation line, when dimming controlling module detects led driver and opens machine, control output end output predeterminated voltage amplitude, because the predeterminated voltage amplitude is lower than the voltage magnitude corresponding to maximum current of described led driver output, can saves like this electric energy and prolong the life-span of LED load.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to the accompanying drawing that provides other accompanying drawing.
Fig. 1 is the circuit diagram with the light adjusting circuit of light modulation line Dim;
Fig. 2 is that the disclosed the first of the utility model embodiment is with the circuit diagram of the light adjusting circuit of light modulation line;
Fig. 3 is the circuit diagram of the disclosed a kind of ON-OFF dimming controlling module of the utility model embodiment;
Fig. 4 is that the disclosed the second of the utility model embodiment is with the circuit diagram of the light adjusting circuit of light modulation line.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment one
See also Fig. 2, be the circuit diagram of the disclosed the first of the utility model embodiment with the light adjusting circuit of light modulation line, this circuit can comprise: mechanical switch S1, led driver 101 and dimming controlling module 201, wherein:
One input of led driver 101 links to each other with the end of mechanical switch S1, the other end of mechanical switch S1 links to each other with an end of power supply 102, the other end of power supply 102 links to each other with another input of led driver 101, the auxiliary power supply line Vcc of led driver 101 links to each other with an input of dimming controlling module 201, the signal ground GND of led driver 101 links to each other with another input of dimming controlling module 201, the light modulation line Dim of led driver 101 links to each other with an output of dimming controlling module 201, and the signal ground GND of led driver 101 links to each other with another output of dimming controlling module 201; The positive output line Vo+ of led driver 101 is connected LED load A1 with negative output line Vo-.
Because led driver 101 is the brightness of controlling LED load A1 according to the voltage between light modulation line Dim and the signal ground GND, so an input of dimming controlling module 201 need to be linked to each other with the signal ground GND of led driver 101.
Need to prove, the light modulation line among the application or auxiliary power supply line or signal ground are the line of broad sense, can be all electrical connections with wire function, and be not limited to electric wire.
Need to prove that the light modulation line among the application is preferably the dimming interface of the 0-10V of standard.
Operation principle is as follows:
At initial mechanical switch S1 when being disconnected to closure, led driver 101 opens machine, dimming controlling module 201 detects led driver and is in when opening the machine state, the voltage of controlling its output is the predeterminated voltage amplitude, because the output current of the led driver that the predeterminated voltage amplitude is corresponding is less than the maximum current of described led driver output, the rush of current to the LED load is less like this, so can prolong the life-span of LED load, and because the electric current of output is little, so can also save electric energy.When mechanical switch S1 when a quick acting occurs in Preset Time, voltage on the auxiliary power supply line Vcc in the dimming controlling module 201 occurs once to change fast thereupon, when the quick acting of preset times occurs in mechanical switch S1, the quick variation of preset times also occurs in the voltage on the auxiliary power supply line Vcc, dimming controlling module detects auxiliary power supply line Vcc and powers on Hair Fixer when giving birth to the quick variation of preset times, the voltage magnitude of controlling its output output changes according to default rule, thereby make led driver along with the voltage that changes according to default rule on the light modulation line, output realizes that according to the electric current that default rule changes the brightness of LED load changes according to default rule.
Dimming controlling module 201 detects led driver and is in the machine state of opening several different methods is arranged, and concrete can when detecting that voltage is increased to high level by low level for the first time on the auxiliary power supply line, determine that be in open machine state for led driver this moment.
Wherein, mechanical switch S1 in Preset Time by closure state to off-state and again by off-state to closure state, be called the quick acting of mechanical switch S1.Above-mentioned auxiliary power supply line Vcc is reduced to low level by high level in Preset Time, be increased to high level by low level again, is called once changing fast of auxiliary power supply line Vcc.
Above-mentioned Preset Time is relevant with the performance of led driver 101, after mechanical switch S1 disconnects, be that power supply 102 stops to be led driver 101 power supplies, if the residual electric energy in the led driver 101 just runs out of after 10s, Preset Time can be made as the arbitrary value less than 10s so, if it is closed with mechanical switch S1 again to surpass 10s, led driver 101 may also be " closure " action with mechanical switch S1, as boot action, namely led driver 101 has memory in Preset Time, above behind the Preset Time, the memory of led driver 101 empties when far away.
In above-described embodiment, default rule can for: raise continuously/reduce change, the continuous separate grade raise/reduce change, circulation change (changing and the graduation circulation change such as continuous circulation), a voltage magnitude grade or other rules raise/reduce.The realization that the sort of default rule does not affect the utility model embodiment on earth, so do not do concrete restriction at this.The below illustrates above-mentioned several default rule.
Continuous rising/reduction variation is described, when dimming controlling module 201 detects the quick variation of the voltage generation preset times on the auxiliary power supply line Vcc, the control output voltage amplitude begins continuous rising/reduction from current amplitude, and concrete rising or reduction are to be determined by the program code in the dimming controlling module 201.Continuous separate grade rising/reduction variation is described, suppose that dimming controlling module 201 current output voltage are 10V, the conversion grade of voltage is 1V, the time that changes is 1s, when dimming controlling module 201 detects the quick variation of the voltage generation preset times on the auxiliary power supply line Vcc, the control output voltage amplitude raises continuously take 1V as gradient/reduces every 1s from 10V, be increased to 11V from 10V during such as 1s, be increased to 12V from 11V during 2s, or as be reduced to 9V from 10V during 1s, be reduced to 8V from 9V during 2s.Variation describes to continuous circulation, continuous circulation changes and can comprise: rise continuously (decline) reduces (rising) more continuously, rising (decline) is classified and is reduced (rising) continuously, continuous separate grade rising (decline) is continuously decline (rising) again, when dimming controlling module 201 detects the quick variation of the voltage generation preset times on the auxiliary power supply line Vcc, the control output voltage amplitude begins continuous rising (this sentences to raise and is example) from current amplitude, when being increased to maximum, begin continuous reducing from current maximum again, so move in circles; Perhaps, current amplitude begins continuous rising (this sentences to raise and is example), when being increased to maximum, jumps to minimum value from current maximum again, begins continuous rising from minimum value, so moves in circles.The graduation circulation change is described, when dimming controlling module 201 detects the quick variation of the voltage generation preset times on the auxiliary power supply line Vcc, when dimming controlling module 201 detects the quick variation of the voltage generation preset times on the auxiliary power supply line Vcc, the control output voltage from current amplitude every Preset Time raise continuously take default amplitude as gradient (this sentences and raises as example), when being increased to maximum, reduce continuously take default amplitude as gradient again, so move in circles, perhaps, saltus step is minimum value when being increased to maximum, raise continuously take default amplitude as gradient again, so move in circles, as suppose that dimming controlling module 201 current output voltage are 10V, default amplitude is 1V, Preset Time is 1s, the output voltage maximum is that the 15V minimum value is 1V, be increased to 11V from 10V during 1s, be increased to 12V from 11V during 2s, when 5s is increased to 15V, reduce from 15V take 1V as gradient again, be reduced to 14V during 6s, perhaps, saltus step is 1V when 5s is increased to 15V, begins to raise continuously with gradient 1V from 1V, so moves in circles.The voltage magnitude grade that raises/reduce is described, when dimming controlling module 201 detects the quick variation of the voltage generation preset times on the auxiliary power supply line Vcc, the amplitude of controlling the voltage of its output output voltage magnitude grade that raises/reduce.Suppose altogether M level of led driver 101 output current grades, be respectively: I1, I2,, IM, wherein, I1 is lowest high-current value, and M is the positive integer greater than 1, and the voltage of dimming controlling module output also has M electric pressure, be respectively V1, V2 ..., VM, wherein when dimming controlling module 201 output voltage V 1, led driver output current I1 is when dimming controlling module 201 output voltage V 2, led driver output current I2, by that analogy.When dimming controlling module 201 detects the quick variation of the voltage generation preset times on the auxiliary power supply line Vcc, the amplitude of the voltage of dimming controlling module 201 outputs output raises or reduces an electric pressure, supposed before the quick variation that detects the voltage generation preset times on the auxiliary power supply line Vcc, the voltage of dimming controlling module 201 outputs output is V2, during the quick variation of the voltage generation preset times on detecting auxiliary power supply line Vcc, the voltage of the dimming controlling module 201 outputs output electric pressure that raises namely becomes V1, perhaps reduces an electric pressure and namely becomes V3.
Above-mentioned preset times can be arbitrarily time fast variation, because preset times is the realization that does not affect several times the utility model embodiment on earth, so do not do concrete restriction at this.
Preferably, when the N time quick variation also occurs for the voltage on detecting auxiliary power supply line Vcc in dimming controlling module 201, the voltage magnitude of controlling the output of its output stops to change, so because voltage stops to change the output current of led driver also stops to change.At this moment, the electric current of LED load also stops to change, and the brightness of LED load also stops to change, and wherein, N is the positive integer greater than above-mentioned preset times.
More clearly understand the operation principle of this use new embodiment for those skilled in the art, the below describes according to being changed to continuously example with the output voltage of dimming controlling module 201:
The quick variation of supposing above-mentioned preset times refers to once change fast, the 1st quick acting of mechanical switch S1 is masked as K1, it is C1 that auxiliary power supply line Vcc voltage is carried out the 1st quick change flag thereupon, the N time quick acting of mechanical switch S1 is masked as KN, and it is CN that auxiliary power supply line Vcc voltage is carried out the N time quick change flag thereupon;
When the input of dimming controlling module 201 detects the C1 variation of auxiliary power supply line Vcc, the amplitude of control output end output voltage changes (the continuous variation among the application continuously, can be to raise continuously to change, also can be to reduce continuously to change), at this moment, led driver 101 detects voltage magnitude between light modulation line Dim and the signal ground GND change continuously after, the output current of control led driver 101 changes (the continuous variation of this output current changes along with the continuous variation of dimming controlling module 201 output voltage amplitudes) continuously, and then the brightness of LED load A1 also changes thereupon continuously; When dimming controlling module 201 detects the CN variation of auxiliary power supply line Vcc, the amplitude of control output end output voltage stops to change, and this amplitude is kept the continuous end amplitude constantly that changes, at this moment, led driver 101 detects voltage magnitude between light modulation line Dim and the signal ground GND to be stopped to change and maintains continuously when changing constantly amplitude of end, and the output current of control led driver 101 stops to change and maintains brightness and changes continuously end brightness constantly.
Wherein, described continuous variation end refers to constantly: after mechanical switch S1 carries out the K1 action, auxiliary power supply line Vcc carries out after C1 changes, the 201 output voltage continually varying last moments of dimming controlling module, suppose, the voltage of dimming controlling module output raises continuously from 10V, carry out KN when action receiving mechanical switch S1, the voltage of dimming controlling module output has been increased to 10.5V, change so continuously the end and constantly refer to that voltage is increased to the moment of 10.5V, at this moment, the amplitude of dimming controlling module 201 control output end output voltages is 10.5V, also namely, mechanical switch S1 carries out the previous moment of the CN variation of KN action or auxiliary power supply line Vcc.
Need to prove because the output current of led driver can change in the time continuously at K1 to KN, when time interval of twice quick acting of mechanical switch S1 K1 to KN not simultaneously, the current value of the output current of led driver after twice quick acting is also different.For example, the output current initial value of led driver is 100mA, when the time interval of twice quick acting of mechanical switch S1 K1 to KN is 10s, the output current of led driver is from 100mA continuous reduction in the time interval of twice quick acting K1 to KN 10s, is reduced to 6mA the finish time at time 10s; If twice QA time interval of mechanical switch S1, the output current of led driver stopped to reduce at time 15s the finish time, then is reduced to less than 6mA, such as 4mA when being 15s.
When mechanical switch S1 behind quick acting first time K1, the output voltage of dimming controlling module 201 begins to change according to certain rule, when mechanical switch S1 carries out the N time quick acting KN, the output voltage of dimming controlling module stops to change, if this moment N 2, also namely have at least quick acting Ki one time between the K1 of mechanical switch S1 and KN action, then dimming controlling module 201 can change according to this quick acting Ki the Changing Pattern of output voltage.For example, behind mechanical switch S1 the first quick acting K1, the output voltage of dimming controlling module 201 begins continuous reduction, when mechanical switch S1 carries out the i time quick acting Ki, the output voltage of dimming controlling module 201 changes continuous rising into from continuous reduction before this, perhaps from reducing continuously to change into fast slowly and reduce etc. continuously before this.In a word, within the time interval of the quick acting K1 of mechanical switch S1 and KN, if also comprise one or more quick acting Ki, dimming controlling module 201 can respond these quick actings, the Changing Pattern of its output voltage is changed behind this quick acting Ki, wherein, i is greater than 1 positive integer less than N.
Above-mentioned example is once to be changed to fast the explanation that example is carried out with being changed to fast of preset times, when being changed to fast of preset times changes fast for m time, principle is identical with above-mentioned example, at this moment, when m quick acting (being Km) occurs in mechanical switch S 1, the output voltage of dimming controlling module 201 just can change according to default rule, when x quick acting (being Km+x) occurs in mechanical switch S1 again, the output voltage of dimming controlling module 201 changes according to other default rules again, and certainly default rule can be identical with previous default rule.Wherein, m is more than or equal to 1 positive integer less than or equal to N.
When supposing that the quick acting of preset times occurs mechanical switch S 1, dimming controlling module 201 will receive the indication that changes according to default rule, when so dimming controlling module 201 being received the indication that changes according to default rule for the first time, the corresponding QA number of times of mechanical switch S1 is called for the first time QA number of times, when dimming controlling module 201 is received the indication that changes according to default rule for the n time, the QA number of times of mechanical switch that receives the indication correspondence that changes according to default rule for the n-1 time is called QA number of times the n time with the difference that receives according to the QA number of times of mechanical switch corresponding to the indication of presetting the rule variation for the n time, can be the same or different with the f time QA number of times also can be identical for the e time QA number of times so, wherein, n is more than or equal to 1 positive integer less than or equal to N, e and f are more than or equal to 1 positive integer less than or equal to n, and m is not equal to n.
Adopt the utility model embodiment, fast-changing number of times occurs in the voltage that detects on the auxiliary power supply line Vcc by dimming controlling module 201, when fast-changing number of times arrives preset times, the voltage magnitude of dimming controlling module 201 control output ends output is according to default rule conversion, thereby the brightness that makes light source begins to change according to default rule, thereby realized " ON-OFF " dimming function with led driver 101 light adjusting circuits of light modulation line, when dimming controlling module detects led driver and opens machine, control output end output predeterminated voltage amplitude, because the predeterminated voltage amplitude is lower than the voltage magnitude corresponding to maximum current of described led driver output, can saves like this electric energy and prolong the life-span of LED load.
Embodiment two
See also Fig. 3, the circuit diagram of a kind of dimming controlling module that provides for the utility model embodiment, dimming controlling module 201 can comprise: the first detecting unit 301, the first logical block 302 and output unit 303, wherein:
One input of the first detecting unit 301 links to each other with the auxiliary power supply line Vcc of led driver 101, another input links to each other with the signal ground GND of led driver 101, the output of the first detecting unit 301 links to each other with the input of the first logical block 302, and the output of the first logical block 302 links to each other with the input of output unit 303.
Operation principle is as follows:
At initial mechanical switch S1 when being disconnected to closure, led driver 101 opens machine, dimming controlling module 201 detects led driver and is in when opening the machine state, the voltage of controlling its output is the predeterminated voltage amplitude, because the output current of the led driver that the predeterminated voltage amplitude is corresponding is lower than the maximum current of described led driver output, the rush of current to the LED load is less like this, so can prolong the life-span of LED load, and because the electric current of output is little, so can also save electric energy.When mechanical switch S 1 when a quick acting occurs in Preset Time, voltage on the auxiliary power supply line Vcc in the dimming controlling module 201 occurs once to change fast thereupon, when the quick acting of preset times occurs in mechanical switch S1, the quick variation of preset times also occurs in the voltage on the auxiliary power supply line Vcc, dimming controlling module detects auxiliary power supply line Vcc and powers on Hair Fixer when giving birth to the quick variation of preset times, the voltage magnitude of controlling its output output changes according to default rule, thereby make led driver along with the voltage that changes according to default rule on the light modulation line, output realizes that according to the electric current that default rule changes the brightness of LED load changes according to default rule.
Preferably, can also comprise: the second detecting unit 304, the second logical block 305 and control unit 306, wherein:
One input of the second detecting unit 304 links to each other with the auxiliary power supply line Vcc of led driver 101, another input links to each other with the signal ground GND of led driver 101, the output of the second detecting unit 304 links to each other with the input of the second logical block 305, the output of the second logical block 305 links to each other with the input of control unit 306, and the output of control unit 306 links to each other with output unit 303.Control unit 306 can belong to output unit 303, and namely the function of output unit 303 also comprises the function of control unit 306, and control unit 306 also can be two independently unit with output unit 303 certainly.
Operation principle is as follows:
The second detecting unit 304 detects the auxiliary power supply line Vcc Hair Fixer that powers on and gives birth to the N time fast during variation, the 3rd detection signal of respective change is carried out in control output end output, the 3rd detection signal passes through the variation of its parameter (such as level magnitude, or duty ratio, or low duration, or high level lasting time etc.) show that auxiliary power supply line Vcc " reducing-raise " has occured changed, the second logical block 305 records the 3rd detecting unit is exported the change frequency of the 3rd detection signal, and according to the record change frequency export corresponding the 3rd control signal, control unit 306 stops to change according to the voltage magnitude of the 3rd control signal control output unit 303 outputs, and N is the positive integer greater than described preset times.
The first detecting unit 301 and the second detecting unit 304 can be the two kind functions of same detecting unit under different situations, can certainly be two different detecting units, the first logical block 302 and the second logical block 305 can for the two kind functions of same logical block under different situations, can certainly be two different logical blocks.
Dimming controlling module in the present embodiment can be distinguished individual packages with led driver 101, can certainly be packaged together with led driver 101.
Embodiment three
See also Fig. 4, the second that provides for the utility model embodiment is with the circuit diagram of the light adjusting circuit of light modulation line, and this circuit can comprise: mechanical switch S1, led driver 101 and dimming controlling module 201, wherein:
One input of led driver 101 links to each other with the end of mechanical switch S1, the other end of mechanical switch S1 links to each other with an end of power supply 102, the other end of power supply 102 links to each other with another input of led driver 101, the light modulation line Dim of led driver 101 links to each other with an end of dimming controlling module 201, and the signal ground GND of led driver 101 links to each other with the other end of dimming controlling module 201; The positive output line Vo+ of led driver 101 is connected LED load A1 with negative output line Vo-.
Because led driver 101 is the brightness of controlling LED load A1 according to the voltage between light modulation line Dim and the signal ground GND, so an end of dimming controlling module 201 need to be linked to each other with the signal ground GND of led driver 101.
Operation principle is as follows:
At initial mechanical switch S1 when being disconnected to closure, led driver 101 opens machine, dimming controlling module 201 detects led driver and is in when opening the machine state, the voltage of controlling its output is the predeterminated voltage amplitude, because the output current of the led driver that the predeterminated voltage amplitude is corresponding is lower than the maximum current of described led driver output, the rush of current to the LED load is less like this, so can prolong the life-span of LED load, and because the electric current of output is little, so can also save electric energy.When mechanical switch S1 when a quick acting occurs in Preset Time, voltage on the light modulation line Dim in the dimming controlling module 201 occurs once to change fast thereupon, when the quick acting of preset times occurs in mechanical switch S1, the quick variation of preset times also occurs in the voltage on the light modulation line Dim, dimming controlling module 201 detects light modulation line Dim and powers on Hair Fixer when giving birth to the quick variation of preset times, the amplitude of controlling its both end voltage changes according to default rule, thereby make led driver along with the voltage that changes according to default rule on the light modulation line, output realizes that according to the electric current that default rule changes the brightness of LED load changes according to default rule.
Dimming controlling module 201 detects led driver and is in the machine state of opening several different methods is arranged, and concrete can when detecting that voltage is increased to high level by low level for the first time on the light modulation line, determine that be in open machine state for led driver this moment.
In above-described embodiment, default rule can for: raise continuously/reduce change, the continuous separate grade raise/reduce change, circulation change (continuous circulation changes and the graduation circulation change), a voltage magnitude grade or other rules raise/reduce.The realization that the sort of default rule does not affect the utility model embodiment on earth, so do not do concrete restriction at this.Concrete example is referring to the statement among the embodiment one, just with " auxiliary power supply line Vcc is revised as light modulation line dim " among the embodiment one.
In addition, dimming controlling module 201, detect the quick variation of voltage on the light modulation line, thereby regulate the led driver output current by the amplitude of regulating light modulation line voltage, and then regulate the brightness of LED load, although the input of dimming controlling module 201 is connected with output all is the light modulation line, do not influence each other, this is because the dimming controlling module input detects is the variation of voltage on the light modulation line, and output control is the amplitude of voltage when being in stable state on the light modulation line.
Preferably, when dimming controlling module 201 also was used for voltage on detecting light modulation line Dim and occurs to change fast for the N time, the voltage magnitude of controlling its two ends stopped to change, so also stop variation because voltage stops to change the output current of led driver.At this moment, the electric current of LED load also stops to change, and the brightness of LED load also stops to change, and wherein, N is the positive integer greater than the fast-changing number of times of above-mentioned preset times.
Wherein, dimming controlling module 201 comprises:
One input of the first detecting unit 301 links to each other with the light modulation line Dim of led driver 101, another input links to each other with the signal ground GND of led driver 101, the output of the first detecting unit 301 links to each other with the input of the first logical block 302, and the output of the first logical block 302 links to each other with the input of output unit 303.
Operation principle is as follows:
When a quick acting occured mechanical switch S1, the voltage on the light modulation line Dim occured once to change fast.The first detecting unit 301 detects voltage between light modulation line Dim and the signal ground GND when occuring once to change fast, the first detection signal of respective change is carried out in output, the first detection signal passes through the variation of its parameter (such as level magnitude, or duty ratio, or low duration, or high level lasting time etc.) show that light modulation line Dim " reducing-raise " has occured changed, the change frequency of the first logical block 302 records the first detecting unit 301 outputs the first detection signal, and export corresponding the first control signal to output unit 303 according to the change frequency of the first detection signal, output unit 303 is controlled its output according to the first control signal voltage magnitude changes according to default rule.
Preferably, can also comprise: the second detecting unit 304, the second logical block 305 and control unit 306, wherein:
One input of the second detecting unit 304 links to each other with the light modulation line Dim of led driver 101, another input links to each other with the signal ground GND of led driver 101, the output of the second detecting unit 304 links to each other with the input of the second logical block 305, the output of the second logical block 305 links to each other with the input of control unit 306, and the output of control unit 306 links to each other with output unit 303.Control unit 306 can belong to output unit 303, and namely the function of output unit 303 also comprises the function of control unit 306, and control unit 306 also can be two independently unit with output unit 303 certainly.
Operation principle is as follows:
The second detecting unit 304 detects the light modulation line Dim Hair Fixer that powers on and gives birth to the N time fast during variation, the second detection signal of respective change is carried out in control output end output, the second detection signal passes through the variation of its parameter (such as level magnitude, or duty ratio, or low duration, or high level lasting time etc.) show that light modulation line Dim " reducing-raise " has occured changed, the second logical block 305 records the second detecting unit is exported the change frequency of the second detection signal, and according to the record change frequency export corresponding the second control signal, control unit 306 stops to change according to the voltage magnitude of the second control signal control output unit 303 outputs, and N is the positive integer greater than described preset times.
The first detecting unit 301 and the second detecting unit 304 can be the two kind functions of same detecting unit under different situations, can certainly be two different detecting units, the first logical block 302 and the second logical block 305 can for the two kind functions of same logical block under different situations, can certainly be two different logical blocks.
Adopt the utility model embodiment, fast-changing number of times occurs in the voltage that detects on the light modulation line Dim by dimming controlling module 201, when fast-changing number of times arrives preset times, the voltage magnitude of dimming controlling module 201 control output ends output is according to default rule conversion, thereby the brightness that makes light source begins to change according to default rule, thereby has realized " ON-OFF " dimming function with led driver 101 light adjusting circuits of light modulation line.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For the disclosed device of embodiment, because it is corresponding with the disclosed method of embodiment, so description is fairly simple, relevant part partly illustrates referring to method and gets final product.
Also need to prove, in this article, relational terms such as the first and second grades only is used for an entity or operation are separated with another entity or operating space, and not necessarily requires or hint and have the relation of any this reality or sequentially between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby not only comprise those key elements so that comprise process, method, article or the equipment of a series of key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.In the situation that not more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from spirit or scope of the present utility model, in other embodiments realization.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. the light adjusting circuit with the light modulation line is characterized in that, comprising:
The mechanical switch that links to each other with power supply;
Link to each other with described mechanical switch, have the led driver of auxiliary power supply line, light modulation line and signal ground;
One input links to each other with the auxiliary power supply line of described led driver, another input links to each other with the signal ground of described led driver, when detecting described led driver and opening machine, the voltage magnitude of controlling its output output is the predeterminated voltage amplitude, detect described auxiliary power supply line and power on Hair Fixer when giving birth to the quick variation of preset times, control the voltage magnitude of its output output according to the dimming controlling module of default rule variation, one output of described dimming controlling module links to each other with the light modulation line of described led driver, another output links to each other with the signal ground of described led driver, described quick variation refers to be reduced to low level by high level in Preset Time, be increased to high level by low level again, the maximum current that led driver output current corresponding to described predeterminated voltage amplitude exported less than described led driver.
2. a dimming controlling module is applied in the light adjusting circuit with the light modulation line, and described light adjusting circuit comprises: led driver, and described led driver comprises: auxiliary power supply line, signal ground and light modulation line, it is characterized in that,
One input of described dimming controlling module links to each other with the auxiliary power supply line of described led driver, another input links to each other with the signal ground of described led driver, one output links to each other with the light modulation line of described led driver, and another output links to each other with the signal ground of described led driver;
When described dimming controlling module opens machine for detecting described led driver, the voltage magnitude of controlling its output output is the predeterminated voltage amplitude, detect described auxiliary power supply line and power on Hair Fixer when giving birth to the quick variation of preset times, control the voltage magnitude of its output output according to the dimming controlling module of default rule variation, described quick variation refers to be reduced to low level by high level in Preset Time, be increased to high level by low level again, the maximum current that led driver output current corresponding to described predeterminated voltage amplitude exported less than described led driver.
3. described dimming controlling module according to claim 2, it is characterized in that, described default rule is that voltage that the voltage magnitude of described dimming controlling module output reduces/raise a voltage magnitude grade, the output of described dimming controlling module raise continuously/the reduces voltage continuous separate grade of variations, the output of described dimming controlling module raises/reduces and changes or voltage cycle variation that described dimming controlling module is exported.
4. according to claim 2 or 3 described dimming controlling module, it is characterized in that, described dimming controlling module specifically comprises:
One input links to each other with the auxiliary power supply line of described led driver, another input links to each other with the signal ground of described led driver, detecting described auxiliary power supply line powers on when Hair Fixer is living to be changed fast, the first detection signal of respective change is carried out in control output end output, detects the first detecting unit of exporting the second detection signal when described led driver opens machine;
Input links to each other with the output of described the first detecting unit, when receiving described the second detection signal, export corresponding the second control signal, record described the first detecting unit and export the change frequency of the first detection signal, and export the first logical block of corresponding the first control signal according to the change frequency of record;
Input links to each other with the output of described the first logical block, according to described the second control signal, the voltage magnitude of control output is the predeterminated voltage amplitude, according to the output unit of described the first control signal control output according to the voltage magnitude of described default rule variation, one output of described output unit links to each other with the light modulation line of described led driver, and another output links to each other with the signal ground of described led driver.
5. described dimming controlling module according to claim 4 is characterized in that, described dimming controlling module also comprises:
One input links to each other with the auxiliary power supply line of described led driver, another input links to each other with the signal ground of described led driver, detect when voltage regulation changes for N time fast on the described auxiliary power supply line, the second detecting unit of the 3rd detection signal of respective change is carried out in control output end output, and N is the positive integer greater than described preset times;
Input links to each other with the output of described the second detecting unit, records the change frequency that described the second detecting unit is exported the 3rd detection signal, and exports the second logical block of corresponding the 3rd control signal according to the change frequency of record;
Input links to each other with the output of described the second logical block, control the control unit that the voltage magnitude of described output unit output stops to change according to described the 3rd control signal, one output of described control unit links to each other with described output unit, and another output links to each other with the signal ground of described led driver.
6. the light adjusting circuit with the light modulation line is characterized in that, comprising:
The mechanical switch that links to each other with power supply;
Link to each other with described mechanical switch, have the led driver of light modulation line and signal ground;
One end links to each other with the light modulation line of described led driver, the other end links to each other with the signal ground of described led driver, when detecting described led driver and opening machine, the voltage magnitude of controlling its two ends output is the predeterminated voltage amplitude, detect described light modulation line and power on Hair Fixer when giving birth to the quick variation of preset times, control the voltage magnitude of its two ends output according to the dimming controlling module of default rule variation, one output of described dimming controlling module links to each other with the light modulation line of described led driver, another output links to each other with the signal ground of described led driver, described quick variation refers to be reduced to low level by high level in Preset Time, be increased to high level by low level again, the maximum current that led driver output current corresponding to described predeterminated voltage amplitude exported less than described led driver.
7. a dimming controlling module is applied in the light adjusting circuit with the light modulation line, and described light adjusting circuit comprises: led driver, and described led driver comprises: signal ground and light modulation line, it is characterized in that,
One end of described dimming controlling module links to each other with the light modulation line of described led driver, and the other end links to each other with the signal ground of described led driver;
When described dimming controlling module opens machine for detecting described led driver, the voltage magnitude of controlling its two ends output is the predeterminated voltage amplitude, detect described light modulation line and power on Hair Fixer when giving birth to the quick variation of preset times, control the voltage magnitude of its two ends output according to the dimming controlling module of default rule variation, described quick variation refers to be reduced to low level by high level in Preset Time, be increased to high level by low level again, the maximum current that led driver output current corresponding to described predeterminated voltage amplitude exported less than described led driver.
8. described dimming controlling module according to claim 7, it is characterized in that, described default rule is that voltage that the voltage magnitude of described dimming controlling module output reduces/raise a voltage magnitude grade, the output of described dimming controlling module raise continuously/the reduces voltage continuous separate grade of variations, the output of described dimming controlling module raises/reduces and changes or voltage cycle variation that described dimming controlling module is exported.
9. according to claim 7 or 8 described dimming controlling module, it is characterized in that, described dimming controlling module specifically comprises:
One input links to each other with the light modulation line of described led driver, another input links to each other with the signal ground of described led driver, detecting described light modulation line powers on when Hair Fixer is living to be changed fast, the first detection signal of respective change is carried out in control output end output, detects the first detecting unit of exporting the second detection signal when described led driver opens machine;
Input links to each other with the output of described the first detecting unit, when receiving described the second detection signal, export corresponding the second control signal, record described the first detecting unit and export the change frequency of the first detection signal, and export the first logical block of corresponding the first control signal according to the change frequency of record;
Input links to each other with the output of described the first logical block, according to described the second control signal, the voltage magnitude of control output is the predeterminated voltage amplitude, according to the output unit of described the first control signal control output according to the voltage magnitude of described default rule variation, one output of described output unit links to each other with the light modulation line of described led driver, and another output links to each other with the signal ground of described led driver.
10. described dimming controlling module according to claim 9 is characterized in that, described dimming controlling module also comprises:
One input links to each other with the light modulation line of described led driver, another input links to each other with the signal ground of described led driver, detect when voltage regulation changes for N time fast on the described light modulation line, the second detecting unit of the 3rd detection signal of respective change is carried out in control output end output, and N is the positive integer greater than described preset times;
Input links to each other with the output of described the second detecting unit, records the change frequency that described the second detecting unit is exported the 3rd detection signal, and exports the second logical block of corresponding the 3rd control signal according to the change frequency of record;
Input links to each other with the output of described the second logical block, control the control unit that the voltage magnitude of described output unit output stops to change according to described the 3rd control signal, one output of described control unit links to each other with described output unit, and another output links to each other with the signal ground of described led driver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220390697 CN202738204U (en) | 2012-08-08 | 2012-08-08 | Dimming circuit with dimming wire and dimming control module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220390697 CN202738204U (en) | 2012-08-08 | 2012-08-08 | Dimming circuit with dimming wire and dimming control module |
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| CN202738204U true CN202738204U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220390697 Expired - Lifetime CN202738204U (en) | 2012-08-08 | 2012-08-08 | Dimming circuit with dimming wire and dimming control module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111405724A (en) * | 2020-05-04 | 2020-07-10 | 上海欧切斯实业有限公司 | Dimming parameter online adjusting circuit and dimming method |
| CN115394228A (en) * | 2022-08-19 | 2022-11-25 | 武汉天马微电子有限公司 | Voltage control method, device, equipment, medium and product |
-
2012
- 2012-08-08 CN CN 201220390697 patent/CN202738204U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111405724A (en) * | 2020-05-04 | 2020-07-10 | 上海欧切斯实业有限公司 | Dimming parameter online adjusting circuit and dimming method |
| CN115394228A (en) * | 2022-08-19 | 2022-11-25 | 武汉天马微电子有限公司 | Voltage control method, device, equipment, medium and product |
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