CN104918381A - LED power supply segmented switching control module and control method thereof - Google Patents
LED power supply segmented switching control module and control method thereof Download PDFInfo
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- CN104918381A CN104918381A CN201510330951.XA CN201510330951A CN104918381A CN 104918381 A CN104918381 A CN 104918381A CN 201510330951 A CN201510330951 A CN 201510330951A CN 104918381 A CN104918381 A CN 104918381A
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Abstract
The present invention discloses an LED power supply segmented switching control module and a control method thereof. The LED power supply segmented switching control module comprises an IC power supply anode VDD, a switching signal input pin SW, a mode setting pin SET, an output first channel CH1, an output second channel CH2, an output third channel CH3 and an IC power supply cathode VSS. A user can carry out segmented control dimming on an LED lamp; when a wall switch is switched on, a warm light lamp source is light; when the wall switch is switched off and then is switched on, a white light lamp source is light; and then when the wall switch is operated again, two paths of lamp sources are simultaneously light. The LED power supply segmented switching control module is suitable for the household illumination segmented control place and enables the LED fluorescent lamp to be more humanized and more saving in electric energy.
Description
Technical field
The present invention relates to a kind of LED power supply block switch control module and control method.
Background technology
Along with the universal of LED and the development of technology, LED replaces the lamp source of original fluorescent lamp as fluorescent lamp gradually.But the control switch of current LED Down lamp does not have Discrete control dimming function usually, the work of light source can not be selected to combine according to occasion, not meet the requirement of product hommization.
Summary of the invention
For overcoming the deficiencies in the prior art, an object of the present invention is to provide a kind of LED power supply block switch control module, realizes multichannel light source independence or work in combination by single switch, provides diversity to select to the work of light source combination.
Two of the object of the invention is to provide a kind of LED power supply block switch control module and control method:
The present invention is the technical scheme that the technical problem solving one of the object of the invention adopts: a kind of LED power supply block switch control module, comprise: drive control module and several LED module groups, at least two or more LED lamp pearl is provided with in described LED module group, that connects with described LED module group is suitable for the independent some LED lamp pearls controlled, and the sum of described LED lamp pearl is no less than LED lamp pearl number in LED module group; Some LED module groups, LED lamp bead produce an output voltage after forming serial module structure;
Described drive control module comprises driver module, block switch control module, public anode, the first negative electrode, the second negative electrode, described driver module comprises rectification module, filtration module and drive IC, described rectification module comprises the first rectifier bridge and the second rectifier bridge that are connected with ac input end, the output of described first rectifier bridge connects the input of drive IC, and the power take-off of described drive IC is connected to public anode by filtration module; Described block switch control module comprises block switch IC, the first optical coupler, the second optical coupler, the first triode, the second triode, described block switch IC has the first output, the second output, first output is connected with the input of the first optical coupler, second output is connected with the input of the second optical coupler, the output of the first optical coupler is connected to the first negative electrode by the first triode, and the output of the second optical coupler is connected to the second negative electrode by the second triode.
Described LED power supply block switch control module also comprises: be suitable for respectively to the adaptation module that each LED module group, LED lamp pearl control, this adaptation module comprises:
Voltage coarse adjustment module, is suitable for by set upper limit reference voltage and lower limit reference voltage, controls each LED module group respectively and lights or extinguish, and to adjust described output voltage, makes it be stabilized between described upper limit reference voltage and lower limit reference voltage;
Voltage fine module, be suitable for by setting the second reference voltage, control each LED lamp pearl respectively light or extinguish, again to adjust described output voltage, make it be stable between described upper limit reference voltage and the second reference voltage or between lower limit reference voltage and the second reference voltage.
Further, described voltage coarse adjustment module comprises: the first adaptive voltage detecting unit, the first logic control element, and several first self-adaptive controllers in parallel with each LED module group respectively;
Described first adaptive voltage detecting unit comprises: upper voltage limit comparator, lower voltage limit comparator, and described output voltage is connected to the end of oppisite phase of upper voltage limit comparator and the in-phase end of lower voltage limit comparator respectively;
The in-phase end access upper limit reference voltage of described upper voltage limit comparator,
The end of oppisite phase access lower limit reference voltage of described lower voltage limit comparator;
Described first logic control element adopts the first shifting deposit unit, the serial input terminal access low level that moves to left of described first shifting deposit unit, the serial input terminal that moves to right access high level, or the serial input terminal access high level that moves to left, the serial input terminal that moves to right access low level;
Two inputs of the control mode of described first shifting deposit unit are connected with the output of upper and lower limit voltage comparator respectively, to realize the control that moves to left or move to right;
The output of described first shifting deposit unit is connected with the control end of each first self-adaptive controller respectively.
Further, described voltage fine module comprises: the second adaptive voltage detecting unit, the second logic control element, several the second self-adaptive controllers in parallel with LED lamp pearl respectively, and described second logic control element adopts the second shifting deposit unit;
Described second adaptive voltage detecting unit, comprise: fine tuning voltage comparator, the end of oppisite phase of this fine tuning voltage comparator accesses described output voltage, described second reference voltage of its in-phase end access, and this second reference voltage is that lower limit reference voltage adds a stepped voltage;
On described, the output of lower voltage limit comparator is also connected with two inputs of door with one respectively, should be connected with the first input end of a three value and gate with the output of door, the output of described fine tuning voltage comparator is connected with the second input of described three value and gate by the first not gate, 3rd input of this three value and gate accesses a pulse signal, the output of this three value and gate is connected with the CP pulse ends of described second shifting deposit unit, the output of described fine tuning voltage comparator is also connected by move to right serial input terminal or the serial input terminal that moves to left of the second not gate and described second shifting deposit unit,
The output of described second shifting deposit unit is connected with the control end of each second self-adaptive controller respectively.
Further, described voltage fine module comprises: the second adaptive voltage detecting unit, the second logic control element, several the second self-adaptive controllers in parallel with LED lamp pearl respectively, and described second logic control element adopts the second shifting deposit unit;
Described second adaptive voltage detecting unit, comprise: fine tuning voltage comparator, the end of oppisite phase of this fine tuning voltage comparator accesses described output voltage, described second reference voltage of its in-phase end access, and this second reference voltage is that upper limit reference voltage deducts a stepped voltage;
On described, the output of lower voltage limit comparator is also connected with two inputs of door with one respectively, should be connected with the first input end of a three value and gate with the output of door, the output of described fine tuning voltage comparator is connected with the second input of described three value and gate, 3rd input of this three value and gate accesses a pulse signal, the output of this three value and gate is connected with the CP pulse ends of described second shifting deposit unit, the output of described fine tuning voltage comparator is also connected with move to right serial input terminal or the serial input terminal that moves to left of described second shifting deposit unit,
The output of described second shifting deposit unit is connected with the control end of each second self-adaptive controller respectively.
The technical scheme of the object of the invention two is as follows:
A control method for LED power supply block switch control module,
Described control method comprises two kinds of mode of operations:
Wherein mode of operation one is 3 grades of control switchs, and following steps realize:
Step one, during first time start, CH1 exports, and CH2, CH3 close;
Step 2, after second time switch motion, CH2 exports, and CH1, CH3 close;
Step 3, after third time switch motion, CH1, CH2 export simultaneously, and CH3 closes;
Step 4, turn back to first time switch motion state after the 4th switch motion, loop control like this exports.
Wherein mode of operation two is 4 grades of control switchs, and following steps realize:
Step one, during first time start, CH1 exports, and CH2, CH3 close;
Step 2, after second time switch motion, CH2 exports, and CH1, CH3 close;
Step 3, after third time switch motion, CH1, CH2 export simultaneously, and CH3 closes;
Step 4, after the 4th switch motion, CH3 exports, and CH1, CH2 close;
Step 5, turns back to the 1st switch motion state after the 5th switch motion.Loop control like this exports.
Further, described control switch comprises: the first adaptive voltage detecting unit, the first logic control element, and several first self-adaptive controllers in parallel with each LED module group respectively;
Described first adaptive voltage detecting unit comprises: upper voltage limit comparator, lower voltage limit comparator, and described output voltage is connected to the end of oppisite phase of upper voltage limit comparator and the in-phase end of lower voltage limit comparator respectively;
The in-phase end access upper limit reference voltage of described upper voltage limit comparator,
The end of oppisite phase access lower limit reference voltage of described lower voltage limit comparator;
If described output voltage is greater than upper limit reference voltage, then the first adaptive voltage detecting unit makes the first shifting deposit unit produce the shift signal turned off successively by each first self-adaptive controller, until described output voltage drops between upper limit reference voltage and lower limit reference voltage; If described output voltage is less than lower limit reference voltage, then the first adaptive voltage detecting unit makes the first shifting deposit unit produce the shift signal of each first self-adaptive controller successively conducting, until output voltage is elevated between described upper limit reference voltage and lower limit reference voltage;
If described output voltage is between described upper limit reference voltage and lower limit reference voltage, then the first adaptive voltage detecting unit makes the first shifting deposit unit produce the signal maintained the original state by each first self-adaptive controller.
Further again, described first logic control element adopts the first shifting deposit unit, the serial input terminal access low level that moves to left of this first shifting deposit unit, the serial input terminal that moves to right access high level, or the serial input terminal access high level that moves to left, the serial input terminal that moves to right access low level;
Two inputs of the control mode of described first shifting deposit unit are connected with the output of upper and lower limit voltage comparator respectively, to realize the control that moves to left or move to right;
The output of described first shifting deposit unit is connected with the control end of each first self-adaptive controller respectively; When the input voltage fluctuation of described serial module structure;
If described output voltage is greater than upper limit reference voltage, described upper voltage limit comparator output low level, lower voltage limit comparator exports high level, described first shifting deposit unit is exported successively make the shift signal that each first self-adaptive controller turns off, namely corresponding LED module group is lighted successively, to reduce described output voltage, until between upper limit reference voltage and lower limit reference voltage;
If described output voltage is less than lower limit reference voltage, described upper voltage limit comparator exports high level, lower voltage limit comparator output low level, described first shifting deposit unit is made to export the shift signal making each first self-adaptive controller conducting successively, namely corresponding LED module group is extinguished successively, to improve described output voltage, until between upper limit reference voltage and lower limit reference voltage;
If described output voltage is between described upper limit reference voltage and lower limit reference voltage, described upper voltage limit comparator, lower voltage limit comparator all export high level, described first shifting deposit unit is exported maintain the original state, namely each LED module group maintains the original state.
Further again, described voltage fine module comprises: the second adaptive voltage detecting unit, the second logic control element, several the second self-adaptive controllers in parallel with LED lamp pearl respectively, and described second logic control element adopts the second shifting deposit unit;
Described second adaptive voltage detecting unit, comprise: fine tuning voltage comparator, the end of oppisite phase of this fine tuning voltage comparator accesses described output voltage, described second reference voltage of its in-phase end access, and this second reference voltage is that lower limit reference voltage adds a stepped voltage;
On described, the output of lower voltage limit comparator is also connected with two inputs of door with one respectively, should be connected with the first input end of a three value and gate with the output of door, the output of described fine tuning voltage comparator is connected with the second input of described three value and gate by the first not gate, 3rd input of this three value and gate accesses a pulse signal, the output of this three value and gate is connected with the CP pulse ends of described second shifting deposit unit, the output of described fine tuning voltage comparator is also connected by move to right serial input terminal or the serial input terminal that moves to left of the second not gate and described second shifting deposit unit,
The output of described second shifting deposit unit is connected with the control end of each second self-adaptive controller respectively; When described output voltage is between described upper limit reference voltage and lower limit reference voltage, and when this output voltage is greater than the second reference voltage, realize reducing this output voltage by lighting LED lamp pearl; Namely, describedly export high level with door, access to the first input end of described three value and gate, fine tuning voltage comparator output low level, and export high level by described not gate, access to the second input of described three value and gate, namely described pulse signal accesses to the CP pulse ends of the second shifting deposit unit; And the second shifting deposit unit moves to right, serial input terminal or the serial input terminal that moves to left access the low level that described fine tuning voltage comparator exports, move to left or move to right into this low level to make described second shifting deposit unit, corresponding second self-adaptive controller turns off, then corresponding LED lamp pearl is lighted, to reduce described output voltage, until when this output voltage is between the second reference voltage and lower limit reference voltage, stop displacement.
The invention has the beneficial effects as follows: a kind of LED power supply block switch control module that the present invention adopts and control method, user can carry out Discrete control light modulation to LED, it is bright that closed switch on wall warms up light modulation source, disconnect again closed white light source bright, again operate switch on wall two street lamp source simultaneously bright, be applicable to domestic lighting Discrete control occasion, make LED fluorescent lamp more humane, more saves energy.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the invention will be further described.
Fig. 1 is the structure principle chart of drive control module of the present invention.
Fig. 2 is drive control module pin distribution map of the present invention.
Fig. 3 is drive control module pin instruction card of the present invention.
Embodiment
Illustrate with reference to Fig. 1-3, a kind of LED power supply block switch control module, comprise: drive control module and several LED module groups, at least two or more LED lamp pearl is provided with in described LED module group, that connects with described LED module group is suitable for the independent some LED lamp pearls controlled, and the sum of described LED lamp pearl is no less than LED lamp pearl number in LED module group; Some LED module groups, LED lamp bead produce an output voltage after forming serial module structure;
Described drive control module comprises driver module, block switch control module, public anode, the first negative electrode, the second negative electrode, described driver module comprises rectification module, filtration module and drive IC, described rectification module comprises the first rectifier bridge and the second rectifier bridge that are connected with ac input end, the output of described first rectifier bridge connects the input of drive IC, and the power take-off of described drive IC is connected to public anode by filtration module; Described block switch control module comprises block switch IC, the first optical coupler, the second optical coupler, the first triode, the second triode, described block switch IC has the first output, the second output, first output is connected with the input of the first optical coupler, second output is connected with the input of the second optical coupler, the output of the first optical coupler is connected to the first negative electrode by the first triode, and the output of the second optical coupler is connected to the second negative electrode by the second triode.
Described LED power supply block switch control module also comprises: be suitable for respectively to the adaptation module that each LED module group, LED lamp pearl control, this adaptation module comprises:
Voltage coarse adjustment module, is suitable for by set upper limit reference voltage and lower limit reference voltage, controls each LED module group respectively and lights or extinguish, and to adjust described output voltage, makes it be stabilized between described upper limit reference voltage and lower limit reference voltage;
Voltage fine module, be suitable for by setting the second reference voltage, control each LED lamp pearl respectively light or extinguish, again to adjust described output voltage, make it be stable between described upper limit reference voltage and the second reference voltage or between lower limit reference voltage and the second reference voltage.
Further, described voltage coarse adjustment module comprises: the first adaptive voltage detecting unit, the first logic control element, and several first self-adaptive controllers in parallel with each LED module group respectively;
Described first adaptive voltage detecting unit comprises: upper voltage limit comparator, lower voltage limit comparator, and described output voltage is connected to the end of oppisite phase of upper voltage limit comparator and the in-phase end of lower voltage limit comparator respectively;
The in-phase end access upper limit reference voltage of described upper voltage limit comparator,
The end of oppisite phase access lower limit reference voltage of described lower voltage limit comparator;
Described first logic control element adopts the first shifting deposit unit, the serial input terminal access low level that moves to left of described first shifting deposit unit, the serial input terminal that moves to right access high level, or the serial input terminal access high level that moves to left, the serial input terminal that moves to right access low level;
Two inputs of the control mode of described first shifting deposit unit are connected with the output of upper and lower limit voltage comparator respectively, to realize the control that moves to left or move to right;
The output of described first shifting deposit unit is connected with the control end of each first self-adaptive controller respectively.
Further, described voltage fine module comprises: the second adaptive voltage detecting unit, the second logic control element, several the second self-adaptive controllers in parallel with LED lamp pearl respectively, and described second logic control element adopts the second shifting deposit unit;
Described second adaptive voltage detecting unit, comprise: fine tuning voltage comparator, the end of oppisite phase of this fine tuning voltage comparator accesses described output voltage, described second reference voltage of its in-phase end access, and this second reference voltage is that lower limit reference voltage adds a stepped voltage;
On described, the output of lower voltage limit comparator is also connected with two inputs of door with one respectively, should be connected with the first input end of a three value and gate with the output of door, the output of described fine tuning voltage comparator is connected with the second input of described three value and gate by the first not gate, 3rd input of this three value and gate accesses a pulse signal, the output of this three value and gate is connected with the CP pulse ends of described second shifting deposit unit, the output of described fine tuning voltage comparator is also connected by move to right serial input terminal or the serial input terminal that moves to left of the second not gate and described second shifting deposit unit,
The output of described second shifting deposit unit is connected with the control end of each second self-adaptive controller respectively.
Further, described voltage fine module comprises: the second adaptive voltage detecting unit, the second logic control element, several the second self-adaptive controllers in parallel with LED lamp pearl respectively, and described second logic control element adopts the second shifting deposit unit;
Described second adaptive voltage detecting unit, comprise: fine tuning voltage comparator, the end of oppisite phase of this fine tuning voltage comparator accesses described output voltage, described second reference voltage of its in-phase end access, and this second reference voltage is that upper limit reference voltage deducts a stepped voltage;
On described, the output of lower voltage limit comparator is also connected with two inputs of door with one respectively, should be connected with the first input end of a three value and gate with the output of door, the output of described fine tuning voltage comparator is connected with the second input of described three value and gate, 3rd input of this three value and gate accesses a pulse signal, the output of this three value and gate is connected with the CP pulse ends of described second shifting deposit unit, the output of described fine tuning voltage comparator is also connected with move to right serial input terminal or the serial input terminal that moves to left of described second shifting deposit unit,
The output of described second shifting deposit unit is connected with the control end of each second self-adaptive controller respectively.
A control method for LED power supply block switch control module,
Described control method comprises two kinds of mode of operations:
Wherein mode of operation one is 3 grades of control switchs, and following steps realize:
Step one, during first time start, CH1 exports, and CH2, CH3 close;
Step 2, after second time switch motion, CH2 exports, and CH1, CH3 close;
Step 3, after third time switch motion, CH1, CH2 export simultaneously, and CH3 closes;
Step 4, turn back to first time switch motion state after the 4th switch motion, loop control like this exports.
Wherein mode of operation two is 4 grades of control switchs, and following steps realize:
Step one, during first time start, CH1 exports, and CH2, CH3 close;
Step 2, after second time switch motion, CH2 exports, and CH1, CH3 close;
Step 3, after third time switch motion, CH1, CH2 export simultaneously, and CH3 closes;
Step 4, after the 4th switch motion, CH3 exports, and CH1, CH2 close;
Step 5, turns back to the 1st switch motion state after the 5th switch motion.Loop control like this exports.
Further, described control switch comprises: the first adaptive voltage detecting unit, the first logic control element, and several first self-adaptive controllers in parallel with each LED module group respectively;
Described first adaptive voltage detecting unit comprises: upper voltage limit comparator, lower voltage limit comparator, and described output voltage is connected to the end of oppisite phase of upper voltage limit comparator and the in-phase end of lower voltage limit comparator respectively;
The in-phase end access upper limit reference voltage of described upper voltage limit comparator,
The end of oppisite phase access lower limit reference voltage of described lower voltage limit comparator;
If described output voltage is greater than upper limit reference voltage, then the first adaptive voltage detecting unit makes the first shifting deposit unit produce the shift signal turned off successively by each first self-adaptive controller, until described output voltage drops between upper limit reference voltage and lower limit reference voltage; If described output voltage is less than lower limit reference voltage, then the first adaptive voltage detecting unit makes the first shifting deposit unit produce the shift signal of each first self-adaptive controller successively conducting, until output voltage is elevated between described upper limit reference voltage and lower limit reference voltage;
If described output voltage is between described upper limit reference voltage and lower limit reference voltage, then the first adaptive voltage detecting unit makes the first shifting deposit unit produce the signal maintained the original state by each first self-adaptive controller.
Further again, described first logic control element adopts the first shifting deposit unit, the serial input terminal access low level that moves to left of this first shifting deposit unit, the serial input terminal that moves to right access high level, or the serial input terminal access high level that moves to left, the serial input terminal that moves to right access low level;
Two inputs of the control mode of described first shifting deposit unit are connected with the output of upper and lower limit voltage comparator respectively, to realize the control that moves to left or move to right;
The output of described first shifting deposit unit is connected with the control end of each first self-adaptive controller respectively; When the input voltage fluctuation of described serial module structure;
If described output voltage is greater than upper limit reference voltage, described upper voltage limit comparator output low level, lower voltage limit comparator exports high level, described first shifting deposit unit is exported successively make the shift signal that each first self-adaptive controller turns off, namely corresponding LED module group is lighted successively, to reduce described output voltage, until between upper limit reference voltage and lower limit reference voltage;
If described output voltage is less than lower limit reference voltage, described upper voltage limit comparator exports high level, lower voltage limit comparator output low level, described first shifting deposit unit is made to export the shift signal making each first self-adaptive controller conducting successively, namely corresponding LED module group is extinguished successively, to improve described output voltage, until between upper limit reference voltage and lower limit reference voltage;
If described output voltage is between described upper limit reference voltage and lower limit reference voltage, described upper voltage limit comparator, lower voltage limit comparator all export high level, described first shifting deposit unit is exported maintain the original state, namely each LED module group maintains the original state.
Further again, described voltage fine module comprises: the second adaptive voltage detecting unit, the second logic control element, several the second self-adaptive controllers in parallel with LED lamp pearl respectively, and described second logic control element adopts the second shifting deposit unit;
Described second adaptive voltage detecting unit, comprise: fine tuning voltage comparator, the end of oppisite phase of this fine tuning voltage comparator accesses described output voltage, described second reference voltage of its in-phase end access, and this second reference voltage is that lower limit reference voltage adds a stepped voltage;
On described, the output of lower voltage limit comparator is also connected with two inputs of door with one respectively, should be connected with the first input end of a three value and gate with the output of door, the output of described fine tuning voltage comparator is connected with the second input of described three value and gate by the first not gate, 3rd input of this three value and gate accesses a pulse signal, the output of this three value and gate is connected with the CP pulse ends of described second shifting deposit unit, the output of described fine tuning voltage comparator is also connected by move to right serial input terminal or the serial input terminal that moves to left of the second not gate and described second shifting deposit unit,
The output of described second shifting deposit unit is connected with the control end of each second self-adaptive controller respectively; When described output voltage is between described upper limit reference voltage and lower limit reference voltage, and when this output voltage is greater than the second reference voltage, realize reducing this output voltage by lighting LED lamp pearl; Namely, describedly export high level with door, access to the first input end of described three value and gate, fine tuning voltage comparator output low level, and export high level by described not gate, access to the second input of described three value and gate, namely described pulse signal accesses to the CP pulse ends of the second shifting deposit unit; And the second shifting deposit unit moves to right, serial input terminal or the serial input terminal that moves to left access the low level that described fine tuning voltage comparator exports, move to left or move to right into this low level to make described second shifting deposit unit, corresponding second self-adaptive controller turns off, then corresponding LED lamp pearl is lighted, to reduce described output voltage, until when this output voltage is between the second reference voltage and lower limit reference voltage, stop displacement.
The invention has the beneficial effects as follows: a kind of LED power supply block switch control module that the present invention adopts and control method, user can carry out Discrete control light modulation to LED, it is bright that closed switch on wall warms up light modulation source, disconnect again closed white light source bright, again operate switch on wall two street lamp source simultaneously bright, be applicable to domestic lighting Discrete control occasion, make LED fluorescent lamp more humane, more saves energy.
The above, just preferred embodiment of the present invention, the present invention is not limited to above-mentioned execution mode, as long as it reaches technique effect of the present invention with identical means, all should belong to protection scope of the present invention.
Claims (8)
1. a LED power supply block switch control module, it is characterized in that comprising: drive control module and several LED module groups, at least two or more LED lamp pearl is provided with in described LED module group, that connects with described LED module group is suitable for the independent some LED lamp pearls controlled, and the sum of described LED lamp pearl is no less than LED lamp pearl number in LED module group; Some LED module groups, LED lamp bead produce an output voltage after forming serial module structure;
Described drive control module comprises driver module, block switch control module, public anode, the first negative electrode, the second negative electrode, described driver module comprises rectification module, filtration module and drive IC, described rectification module comprises the first rectifier bridge and the second rectifier bridge that are connected with ac input end, the output of described first rectifier bridge connects the input of drive IC, and the power take-off of described drive IC is connected to public anode by filtration module; Described block switch control module comprises block switch IC, the first optical coupler, the second optical coupler, the first triode, the second triode, described block switch IC has the first output, the second output, first output is connected with the input of the first optical coupler, second output is connected with the input of the second optical coupler, the output of the first optical coupler is connected to the first negative electrode by the first triode, and the output of the second optical coupler is connected to the second negative electrode by the second triode;
Described LED power supply block switch control module also comprises: be suitable for respectively to the adaptation module that each LED module group, LED lamp pearl control, this adaptation module comprises:
Voltage coarse adjustment module, is suitable for by set upper limit reference voltage and lower limit reference voltage, controls each LED module group respectively and lights or extinguish, and to adjust described output voltage, makes it be stabilized between described upper limit reference voltage and lower limit reference voltage;
Voltage fine module, be suitable for by setting the second reference voltage, control each LED lamp pearl respectively light or extinguish, again to adjust described output voltage, make it be stable between described upper limit reference voltage and the second reference voltage or between lower limit reference voltage and the second reference voltage.
2. according to the LED power supply block switch control module described in claim 1, it is characterized in that, described voltage coarse adjustment module comprises: the first adaptive voltage detecting unit, the first logic control element, and several first self-adaptive controllers in parallel with each LED module group respectively;
Described first adaptive voltage detecting unit comprises: upper voltage limit comparator, lower voltage limit comparator, and described output voltage is connected to the end of oppisite phase of upper voltage limit comparator and the in-phase end of lower voltage limit comparator respectively;
The in-phase end access upper limit reference voltage of described upper voltage limit comparator,
The end of oppisite phase access lower limit reference voltage of described lower voltage limit comparator;
Described first logic control element adopts the first shifting deposit unit, the serial input terminal access low level that moves to left of described first shifting deposit unit, the serial input terminal that moves to right access high level, or the serial input terminal access high level that moves to left, the serial input terminal that moves to right access low level;
Two inputs of the control mode of described first shifting deposit unit are connected with the output of upper and lower limit voltage comparator respectively, to realize the control that moves to left or move to right;
The output of described first shifting deposit unit is connected with the control end of each first self-adaptive controller respectively.
3. according to the LED power supply block switch control module described in claim 2, it is characterized in that, described voltage fine module comprises: the second adaptive voltage detecting unit, second logic control element, several the second self-adaptive controllers in parallel with LED lamp pearl respectively, described second logic control element adopts the second shifting deposit unit;
Described second adaptive voltage detecting unit, comprise: fine tuning voltage comparator, the end of oppisite phase of this fine tuning voltage comparator accesses described output voltage, described second reference voltage of its in-phase end access, and this second reference voltage is that lower limit reference voltage adds a stepped voltage;
On described, the output of lower voltage limit comparator is also connected with two inputs of door with one respectively, should be connected with the first input end of a three value and gate with the output of door, the output of described fine tuning voltage comparator is connected with the second input of described three value and gate by the first not gate, 3rd input of this three value and gate accesses a pulse signal, the output of this three value and gate is connected with the CP pulse ends of described second shifting deposit unit, the output of described fine tuning voltage comparator is also connected by move to right serial input terminal or the serial input terminal that moves to left of the second not gate and described second shifting deposit unit,
The output of described second shifting deposit unit is connected with the control end of each second self-adaptive controller respectively.
4. according to the LED power supply block switch control module described in claim 2, it is characterized in that, described voltage fine module comprises: the second adaptive voltage detecting unit, second logic control element, several the second self-adaptive controllers in parallel with LED lamp pearl respectively, described second logic control element adopts the second shifting deposit unit;
Described second adaptive voltage detecting unit, comprise: fine tuning voltage comparator, the end of oppisite phase of this fine tuning voltage comparator accesses described output voltage, described second reference voltage of its in-phase end access, and this second reference voltage is that upper limit reference voltage deducts a stepped voltage;
On described, the output of lower voltage limit comparator is also connected with two inputs of door with one respectively, should be connected with the first input end of a three value and gate with the output of door, the output of described fine tuning voltage comparator is connected with the second input of described three value and gate, 3rd input of this three value and gate accesses a pulse signal, the output of this three value and gate is connected with the CP pulse ends of described second shifting deposit unit, the output of described fine tuning voltage comparator is also connected with move to right serial input terminal or the serial input terminal that moves to left of described second shifting deposit unit,
The output of described second shifting deposit unit is connected with the control end of each second self-adaptive controller respectively.
5., according to a control method for the LED power supply block switch control module described in claim 1, it is characterized in that,
Described control method comprises two kinds of mode of operations:
Wherein mode of operation one is 3 grades of control switchs, and following steps realize:
Step one, during first time start, CH1 exports, and CH2, CH3 close;
Step 2, after second time switch motion, CH2 exports, and CH1, CH3 close;
Step 3, after third time switch motion, CH1, CH2 export simultaneously, and CH3 closes;
Step 4, turn back to first time switch motion state after the 4th switch motion, loop control like this exports;
Wherein mode of operation two is 4 grades of control switchs, and following steps realize:
Step one, during first time start, CH1 exports, and CH2, CH3 close;
Step 2, after second time switch motion, CH2 exports, and CH1, CH3 close;
Step 3, after third time switch motion, CH1, CH2 export simultaneously, and CH3 closes;
Step 4, after the 4th switch motion, CH3 exports, and CH1, CH2 close;
Step 5, turns back to the 1st switch motion state after the 5th switch motion, loop control like this exports.
6., according to the control method of the LED power supply block switch control module described in claim 5, it is characterized in that,
Described control switch comprises: the first adaptive voltage detecting unit, the first logic control element, and several first self-adaptive controllers in parallel with each LED module group respectively;
Described first adaptive voltage detecting unit comprises: upper voltage limit comparator, lower voltage limit comparator, and described output voltage is connected to the end of oppisite phase of upper voltage limit comparator and the in-phase end of lower voltage limit comparator respectively;
The in-phase end access upper limit reference voltage of described upper voltage limit comparator,
The end of oppisite phase access lower limit reference voltage of described lower voltage limit comparator;
If described output voltage is greater than upper limit reference voltage, then the first adaptive voltage detecting unit makes the first shifting deposit unit produce the shift signal turned off successively by each first self-adaptive controller, until described output voltage drops between upper limit reference voltage and lower limit reference voltage; If described output voltage is less than lower limit reference voltage, then the first adaptive voltage detecting unit makes the first shifting deposit unit produce the shift signal of each first self-adaptive controller successively conducting, until output voltage is elevated between described upper limit reference voltage and lower limit reference voltage;
If described output voltage is between described upper limit reference voltage and lower limit reference voltage, then the first adaptive voltage detecting unit makes the first shifting deposit unit produce the signal maintained the original state by each first self-adaptive controller.
7. according to the control method of the LED power supply block switch control module described in claim 6, it is characterized in that, described first logic control element adopts the first shifting deposit unit, the serial input terminal access low level that moves to left of this first shifting deposit unit, the serial input terminal that moves to right access high level, or the serial input terminal access high level that moves to left, the serial input terminal that moves to right access low level;
Two inputs of the control mode of described first shifting deposit unit are connected with the output of upper and lower limit voltage comparator respectively, to realize the control that moves to left or move to right;
The output of described first shifting deposit unit is connected with the control end of each first self-adaptive controller respectively; When the input voltage fluctuation of described serial module structure;
If described output voltage is greater than upper limit reference voltage, described upper voltage limit comparator output low level, lower voltage limit comparator exports high level, described first shifting deposit unit is exported successively make the shift signal that each first self-adaptive controller turns off, namely corresponding LED module group is lighted successively, to reduce described output voltage, until between upper limit reference voltage and lower limit reference voltage;
If described output voltage is less than lower limit reference voltage, described upper voltage limit comparator exports high level, lower voltage limit comparator output low level, described first shifting deposit unit is made to export the shift signal making each first self-adaptive controller conducting successively, namely corresponding LED module group is extinguished successively, to improve described output voltage, until between upper limit reference voltage and lower limit reference voltage;
If described output voltage is between described upper limit reference voltage and lower limit reference voltage, described upper voltage limit comparator, lower voltage limit comparator all export high level, described first shifting deposit unit is exported maintain the original state, namely each LED module group maintains the original state.
8. according to the control method of the LED power supply block switch control module described in claim 7, it is characterized in that, described voltage fine module comprises: the second adaptive voltage detecting unit, second logic control element, several the second self-adaptive controllers in parallel with LED lamp pearl respectively, described second logic control element adopts the second shifting deposit unit;
Described second adaptive voltage detecting unit, comprise: fine tuning voltage comparator, the end of oppisite phase of this fine tuning voltage comparator accesses described output voltage, described second reference voltage of its in-phase end access, and this second reference voltage is that lower limit reference voltage adds a stepped voltage;
On described, the output of lower voltage limit comparator is also connected with two inputs of door with one respectively, should be connected with the first input end of a three value and gate with the output of door, the output of described fine tuning voltage comparator is connected with the second input of described three value and gate by the first not gate, 3rd input of this three value and gate accesses a pulse signal, the output of this three value and gate is connected with the CP pulse ends of described second shifting deposit unit, the output of described fine tuning voltage comparator is also connected by move to right serial input terminal or the serial input terminal that moves to left of the second not gate and described second shifting deposit unit,
The output of described second shifting deposit unit is connected with the control end of each second self-adaptive controller respectively; When described output voltage is between described upper limit reference voltage and lower limit reference voltage, and when this output voltage is greater than the second reference voltage, realize reducing this output voltage by lighting LED lamp pearl; Namely, describedly export high level with door, access to the first input end of described three value and gate, fine tuning voltage comparator output low level, and export high level by described not gate, access to the second input of described three value and gate, namely described pulse signal accesses to the CP pulse ends of the second shifting deposit unit; And the second shifting deposit unit moves to right, serial input terminal or the serial input terminal that moves to left access the low level that described fine tuning voltage comparator exports, move to left or move to right into this low level to make described second shifting deposit unit, corresponding second self-adaptive controller turns off, then corresponding LED lamp pearl is lighted, to reduce described output voltage, until when this output voltage is between the second reference voltage and lower limit reference voltage, stop displacement.
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