CN105934035A - Light-controlled LED (Light-Emitting Diode) energy-saving control system - Google Patents
Light-controlled LED (Light-Emitting Diode) energy-saving control system Download PDFInfo
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- CN105934035A CN105934035A CN201610407837.7A CN201610407837A CN105934035A CN 105934035 A CN105934035 A CN 105934035A CN 201610407837 A CN201610407837 A CN 201610407837A CN 105934035 A CN105934035 A CN 105934035A
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- pole
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
This invention discloses a light-controlled LED energy-saving control system. The control system is mainly composed of a control chip U1, a brightness sensor, a triode VT1, a voltage-stabilizing diode D2, a polar capacitor C4, a signal receiving circuit, a current-regulating circuit and a linear drive circuit; the positive pole of the polar capacitor C4 passes through a resistor R4 to be connected with a CTH pin of the control chip U1, and the negative pole is connected with the ground; the signal receiving circuit is connected between the brightness sensor and an ANT pin of the control chip U1 in series; the current-regulating circuit is connected with an emitting electrode of the triode VT1 and the control chip U1; and the linear drive circuit is connected with the current-regulating circuit. Through adopting the control system provided by this invention, the interfering signal in the signals outputted by the brightness sensor can be cleared, so that the signals outputted by the brightness sensor are more accurate; thus, the accuracy for processing the signals of the control system is improved; simultaneously, the current intensity can be effectively regulated by the control system; and thus, the steady current can be outputted by the control system.
Description
Technical field
The present invention relates to electronic applications, specifically, be a kind of light-operated LED energy-saving control system.
Background technology
At present, due to LED have that energy consumption is low, the feature such as length in service life and safety and environmental protection, it is
Become one of main product of people's life lighting.People's many employings acoustic control, light-operated LED in life
Control system realizes the open and close to LED.Light-operated LED control system can be according to LED because of it
Lamp uses the brightness of environment to control the open and close of LED, and can effectively meet people to LED
In the requirement of energy-conservation aspect, and enjoy the favor of people.But, existing light-operated LED control system exists
Luminance signal is processed inaccurate problem, causes it can not control accurately according to the intensity of illumination of environment
The open and close of LED, thus cannot well meet people's requirement at energy-conservation aspect.Meanwhile, existing
Some light-operated LED control systems there is also the problem that output electric current is unstable, causes LED luminance unstable,
Thus have impact on the service life of LED.
Therefore it provides one can improve luminance signal processes accuracy, can ensure that again the electric current that output is stable
Light-operated LED control system be the task of top priority.
Summary of the invention
It is an object of the invention to overcome light-operated LED control system of the prior art to exist to luminance signal
Manage inaccurate, there is the defect that output electric current is unstable simultaneously, it is provided that a kind of light-operated LED Energy Saving Control system
System.
The present invention is achieved through the following technical solutions: a kind of light-operated LED energy-saving control system, mainly by
Control chip U1, luminance sensor, triode VT1, N pole is connected with the VDD pin of control chip U1
Connect, Zener diode D2 that P pole base stage with triode VT1 after resistance R3 is connected, positive pole is through electricity
Resistance R4 after be connected with the CTH pin of control chip U1, the polar capacitor C4 of minus earth, be serially connected in
Signal receiving circuit between the ANT pin of luminance sensor and control chip U1, respectively with triode VT1
The emitter stage matrix current adjustment circuit that is connected with control chip U1, and be connected with matrix current adjustment circuit
Linear drive circuit forms；The grounded collector of described triode VT1；The VSS of described control chip U1
Pin is connected with VDD pin, and its DO pin is then connected with SHUT pin.
Described signal receiving circuit is by amplifier P, and negative pole is connected with the positive pole of amplifier P, positive pole is with bright
The degree polar capacitor C1 that is connected of sensor, positive pole negative pole with amplifier P after resistance R1 is connected,
Polar capacitor C2, the P pole of minus earth is connected with the positive pole of polar capacitor C1, N pole is after resistance R2
The diode D1 being connected with the output of amplifier P, and positive pole is connected with the output of amplifier P,
The polar capacitor C3 composition that negative pole is connected with the ANT pin of control chip U1.
Described matrix current adjustment circuit is by the REF of triode VT2, triode VT3, positive pole and control chip U1
Polar capacitor C5, the P pole that pin is connected, negative pole is connected with the base stage of triode VT2 is through resistance R8
Afterwards the positive pole with polar capacitor C5 be connected, N pole after adjustable resistance R9 with the colelctor electrode of triode VT3
The diode D3 being connected, one end is connected with the CAGC pin of control chip U1, the other end and three poles
The resistance R7 that the emitter stage of pipe VT2 is connected, one end is connected with the colelctor electrode of triode VT2, another
The inductance L that end is connected with the base stage of triode VT3, and positive pole is sequentially after resistance R6 and resistance R5
Be connected with the emitter stage of triode VT1, polar capacitor that negative pole is connected with the base stage of triode VT3
C6 forms；The base stage of described triode VT3 is connected with the SHUT pin of control chip U；Described three
The emitter stage of pole pipe VT3 and the N pole of diode D3 are collectively forming output and the line of matrix current adjustment circuit
Property drive circuit is connected.
Described linear drive circuit is by driving chip U2, triode VT4, and FET MOS, P are the most suitable
Secondary be connected through resistance R13 CS pin with driving chip U2 after resistance R10, N pole is through resistance R14
The base stage of the Zener diode D4 that the source electrode with FET MOS is connected afterwards, negative pole and triode VT4
Be connected, polar capacitor C8 that positive pole is connected with the OUT pin of driving chip U2, positive pole is through resistance
After R11, the emitter stage with triode VT3 is connected, FB with driving chip U2 manages after negative pole resistance R12
Polar capacitor C7, the P pole that pin is connected is connected with the colelctor electrode of triode VT4, N pole and driving chip
The diode D5 that the FB pin of U2 is connected, and positive pole after resistance R15 with FET MOS's
The polar capacitor C9 composition of ground connection after drain electrode is connected, negative pole is connected with the N pole of diode D5；Described
The VCC pin of driving chip U2 is connected with the emitter stage of triode VT3, its GND pin ground connection；
The emitter stage of described triode VT4 is connected with the grid of FET MOS；Described resistance R13 and electricity
The tie point of resistance R10 is connected with the N pole of diode D3；The N pole of described Zener diode D4 and pole
The negative pole of property electric capacity C9 is collectively forming the output of linear drive circuit.
For the practical effect of the present invention, described control chip U1 the most preferentially uses MICRF007 collection
Chip is become to realize；The most described driving chip U2 the most preferentially have employed and realizes for the integrated chip of AP3766.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the interference signal in the signal of luminance sensor output can be eliminated by the present invention, makes brightness pass
The signal of sensor output is more accurate, thus improves the present invention accuracy to signal transacting, it is ensured that this
The bright open and close that can control LED according to the intensity of illumination in range accurately, the most satisfied
People requirements at energy-conservation aspect；The intensity of electric current can effectively be adjusted by the present invention simultaneously, thus
Ensure that the present invention can export stable electric current, make the brightness stability of LED, effective prolongation LED
Service life.
(2) present invention employs the integrated chip of AP3766 and be used as driving chip, this chip performance is stable,
There is the function such as overtemperature protection, overcurrent protection simultaneously, thus enable the invention to export stable driving electric current,
Ensure that the stability of LED brightness.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described in further detail, but the enforcement of the present invention
Mode is not limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by control chip U1, luminance sensor, triode VT1, electricity
Resistance R3, resistance R4, polar capacitor C4, Zener diode D2, signal receiving circuit, matrix current adjustment circuit,
And linear drive circuit composition.
During enforcement, the N pole of Zener diode D2 is connected with the VDD pin of control chip U1, its P
Pole base stage with triode VT1 after resistance R3 is connected.The positive pole of polar capacitor C4 is after resistance R4
Be connected with the CTH pin of control chip U1, its minus earth.Signal receiving circuit is serially connected in brightness and passes
Between the ANT pin of sensor and control chip U1.Matrix current adjustment circuit respectively with the transmitting of triode VT1
Pole is connected with control chip U1.Linear drive circuit is connected with matrix current adjustment circuit.Described triode
The grounded collector of VT1；The VSS pin of described control chip U1 is connected with VDD pin, its DO
Pin is then connected with SHUT pin；The output of described linear drive circuit is then connected with LED group
Connect；The N pole of described Zener diode D2 is connected with outside 12V DC voltage.
Wherein, described signal receiving circuit by amplifier P, resistance R1, resistance R2, polar capacitor C1,
Polar capacitor C2, polar capacitor C3, and diode D1 form.
During connection, the negative pole of polar capacitor C1 is connected with the positive pole of amplifier P, its positive pole passes with brightness
Sensor is connected.The positive pole of polar capacitor C2 negative pole with amplifier P after resistance R1 is connected, it is born
Pole ground connection.The P pole of diode D1 is connected with the positive pole of polar capacitor C1, its N pole is after resistance R2
It is connected with the output of amplifier P.The positive pole of polar capacitor C3 is connected with the output of amplifier P,
Its negative pole is connected with the ANT pin of control chip U1.
Further, described matrix current adjustment circuit is by triode VT2, triode VT3, resistance R5, electricity
Resistance R6, resistance R7, resistance R8, adjustable resistance R9, inductance L, polar capacitor C5, polar capacitor C6,
And diode D3 composition.
During connection, the positive pole of polar capacitor C5 is connected with the REF pin of control chip U1, its negative pole
It is connected with the base stage of triode VT2.The P pole of diode D3 after resistance R8 with polar capacitor C5's
Positive pole is connected, its N pole colelctor electrode with triode VT3 after adjustable resistance R9 is connected.Resistance R7
One end be connected with the CAGC pin of control chip U1, the emitter stage of its other end and triode VT2
It is connected.One end of inductance L is connected with the colelctor electrode of triode VT2, its other end and triode VT3
Base stage be connected.The positive pole of polar capacitor C6 sequentially after resistance R6 and resistance R5 with triode VT1
Emitter stage be connected, its negative pole is connected with the base stage of triode VT3.
The base stage of described triode VT3 is connected with the SHUT pin of control chip U；Described triode
The N pole of the emitter stage of VT3 and diode D3 be collectively forming matrix current adjustment circuit output and with linearly drive
Dynamic circuit is connected.
Further, described linear drive circuit is by driving chip U2, triode VT4, FET
MOS, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, polarity
Electric capacity C7, polar capacitor C8, polar capacitor C9, Zener diode D4, and diode D5 form.
During connection, the P pole of Zener diode D4 sequentially after resistance R13 and resistance R10 with driving chip
The CS pin of U2 is connected, its N pole source electrode with FET MOS after resistance R14 is connected.
The negative pole of polar capacitor C8 is connected with the base stage of triode VT4, the OUT of its positive pole and driving chip U2
Pin is connected.The positive pole of polar capacitor C7 emitter stage with triode VT3 after resistance R11 is connected,
It is connected with the FB pin of driving chip U2 after its negative pole resistance R12.The P pole of diode D5 and three poles
The colelctor electrode of pipe VT4 is connected, its N pole is connected with the FB pin of driving chip U2.Polar capacitor
The drain electrode with FET MOS after resistance R15 of the positive pole of C9 is connected, its negative pole and diode D5
N pole be connected after ground connection.
The VCC pin of described driving chip U2 is connected with the emitter stage of triode VT3, and its GND manages
Pin ground connection；The emitter stage of described triode VT4 is connected with the grid of FET MOS；Described resistance
The tie point of R13 and resistance R10 is connected with the N pole of diode D3；The N of described Zener diode D4
Pole is collectively forming the output of linear drive circuit and is connected with LED group with the negative pole of polar capacitor C9.
During operation, the interference signal in the signal of luminance sensor output can be eliminated by the present invention, makes bright
The signal of degree sensor output is more accurate, thus improves the present invention accuracy to signal transacting, it is ensured that
The accuracy that LED opens and closes, preferably achieves people's requirement at energy-conservation aspect.
Meanwhile, present invention employs the integrated chip of AP3766 and be used as driving chip U2, this chip performance is steady
Fixed, there is the function such as overtemperature protection, overcurrent protection simultaneously, thus enable the invention to export stable driving electricity
Stream, it is ensured that the stability of LED brightness.The intensity of electric current can effectively be adjusted by the present invention, from
And ensure that the present invention can export stable electric current, make the brightness stability of LED, effectively extend LED
Service life.
During enforcement, for the practical effect of the present invention, described control chip U1 the most preferentially uses
The integrated chip of MICRF007 realizes.Brightness signal value is prestored, this control chip in this control chip U1
U1 can obtain luminance signal after being analyzed processing by the ambient light signal being gathered luminance sensor
Data value, when the data value signal that control chip U1 obtains is less than the data value of its internal memory, output controls electricity
Stream, now, triode VT3 must conduct, and LED group obtains electric being lit.Otherwise, work as control chip
The data value signal that U1 obtains does not exports control electric current, now, triode when being more than the data value of its internal memory
VT3 dead electricity disconnects, and LED group is not lit.
According to above-described embodiment, can well realize the present invention.
Claims (6)
1. a light-operated LED energy-saving control system, it is characterised in that main by control chip U1, brightness
Sensor, triode VT1, N pole is connected with the VDD pin of control chip U1, P pole is through resistance R3
The Zener diode D2 that base stage with triode VT1 is connected afterwards, positive pole after resistance R4 with control chip
The CTH pin of U1 is connected, the polar capacitor C4 of minus earth, is serially connected in luminance sensor and controls core
Signal receiving circuit between the ANT pin of sheet U1, respectively with the emitter stage of triode VT1 and control core
The matrix current adjustment circuit that sheet U1 is connected, and the linear drive circuit group being connected with matrix current adjustment circuit
Become；The grounded collector of described triode VT1；The VSS pin of described control chip U1 is managed with VDD
Pin is connected, and its DO pin is then connected with SHUT pin.
A kind of light-operated LED energy-saving control system the most according to claim 1, it is characterised in that institute
Stating signal receiving circuit by amplifier P, negative pole is connected with the positive pole of amplifier P, positive pole and luminance sensor
The polar capacitor C1 being connected, positive pole negative pole with amplifier P after resistance R1 is connected, minus earth
Polar capacitor C2, P pole be connected with the positive pole of polar capacitor C1, N pole after resistance R2 with amplifier
The diode D1 that the output of P is connected, and positive pole is connected with the output of amplifier P, negative pole with
The polar capacitor C3 composition that the ANT pin of control chip U1 is connected.
A kind of light-operated LED energy-saving control system the most according to claim 2, it is characterised in that institute
State the matrix current adjustment circuit REF pin by triode VT2, triode VT3, positive pole and control chip U1
Be connected, polar capacitor C5, P pole that negative pole is connected with the base stage of triode VT2 after resistance R8 with
The positive pole of polar capacitor C5 is connected, N pole colelctor electrode with triode VT3 after adjustable resistance R9 is connected
The diode D3 connect, one end is connected with the CAGC pin of control chip U1, the other end and triode
The resistance R7 that the emitter stage of VT2 is connected, one end is connected with the colelctor electrode of triode VT2, the other end with
The inductance L that the base stage of triode VT3 is connected, and positive pole sequentially after resistance R6 and resistance R5 with three
The polar capacitor C6 group that the emitter stage of pole pipe VT1 is connected, negative pole is connected with the base stage of triode VT3
Become；The base stage of described triode VT3 is connected with the SHUT pin of control chip U；Described triode
The N pole of the emitter stage of VT3 and diode D3 be collectively forming matrix current adjustment circuit output and with linearly drive
Dynamic circuit is connected.
A kind of light-operated LED energy-saving control system the most according to claim 3, it is characterised in that institute
Stating linear drive circuit by driving chip U2, triode VT4, FET MOS, P pole is sequentially through resistance
R13 is connected with CS pin with driving chip U2 after resistance R10, N pole is imitated with field after resistance R14
Should the Zener diode D4 that is connected of the source electrode of pipe MOS, negative pole is connected with the base stage of triode VT4,
The polar capacitor C8 that positive pole is connected with the OUT pin of driving chip U2, positive pole after resistance R11 with three
The emitter stage of pole pipe VT3 is connected, be connected with the FB pin of driving chip U2 after negative pole resistance R12
Polar capacitor C7, P pole be connected with the colelctor electrode of triode VT4, the FB of N pole and driving chip U2
The diode D5 that pin is connected, and positive pole drain electrode with FET MOS after resistance R15 is connected
Connect, negative pole be connected with the N pole of diode D5 after ground connection polar capacitor C9 composition；Described driving chip
The VCC pin of U2 is connected with the emitter stage of triode VT3, its GND pin ground connection；Described three poles
The emitter stage of pipe VT4 is connected with the grid of FET MOS；Described resistance R13 and resistance R10's
Tie point is connected with the N pole of diode D3；The N pole of described Zener diode D4 and polar capacitor C9
Negative pole be collectively forming the output of linear drive circuit.
A kind of light-operated LED energy-saving control system the most according to claim 4, it is characterised in that institute
Stating control chip U1 is the integrated chip of MICRF007.
A kind of light-operated LED energy-saving control system the most according to claim 4, it is characterised in that institute
Stating driving chip U2 is the integrated chip of AP3766.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610407837.7A CN105934035A (en) | 2016-06-08 | 2016-06-08 | Light-controlled LED (Light-Emitting Diode) energy-saving control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610407837.7A CN105934035A (en) | 2016-06-08 | 2016-06-08 | Light-controlled LED (Light-Emitting Diode) energy-saving control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105934035A true CN105934035A (en) | 2016-09-07 |
Family
ID=56833119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610407837.7A Pending CN105934035A (en) | 2016-06-08 | 2016-06-08 | Light-controlled LED (Light-Emitting Diode) energy-saving control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105934035A (en) |
-
2016
- 2016-06-08 CN CN201610407837.7A patent/CN105934035A/en active Pending
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160907 |
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| WD01 | Invention patent application deemed withdrawn after publication |