CN106211415A - A kind of light-operated LED signal processing system - Google Patents
A kind of light-operated LED signal processing system Download PDFInfo
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- CN106211415A CN106211415A CN201610460108.8A CN201610460108A CN106211415A CN 106211415 A CN106211415 A CN 106211415A CN 201610460108 A CN201610460108 A CN 201610460108A CN 106211415 A CN106211415 A CN 106211415A
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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]
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Abstract
The invention discloses a kind of light-operated LED signal processing system, it is characterized in that, mainly by processing chip U, audion VT1, diode D2, diode D3, the low-pass filter circuit being connected with the VINP pin processing chip U and GNEG pin respectively, and the signal being connected with audion VT1 emitter stage and process chip U respectively launch modulate circuit composition.Harmonics elimination that input signal can be produced by the present invention because of external interference electric wave or suppression；And the bandwidth of output signal can also be adjusted by the present invention, make output signal consistent with the collection signal of input, ensure that the present invention accuracy to signal processing, effectively ensure that light-operated LED control system opens and closes the accuracy controlled to LED.
Description
Technical field
The present invention relates to electronic applications, specifically, be a kind of light-operated LED signal processing 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 has had become as people
One of the main product of life lighting.In life, people's many employings acoustic control or light-operated control system realize LED
Open and close.Light-operated LED control system can use the brightness of environment to control unlatching and the pass of LED according to LED because of it
Close, and can effectively meet people to LED in the requirement of energy-conservation aspect, and enjoy the favor of people.But, existing light-operated
Luminance signal is easily processed inaccurate by extraneous Electromagnetic Interference by the signal processing system of LED control system, causes light-operated
Control system and can not control the open and close of LED according to the intensity of illumination of environment accurately, thus cannot well meet people
In the requirement of energy-conservation aspect.
Can the signal processing system of process accurate to luminance signal be the task of top priority therefore it provides a kind of.
Summary of the invention
It is an object of the invention to overcome the signal processing system of light-operated LED control system of the prior art easily by the external world
Electromagnetic Interference and to luminance signal process inaccurate defect, it is provided that a kind of light-operated LED signal processing system.
The present invention is achieved through the following technical solutions: a kind of light-operated LED signal processing system, mainly by processing chip
U, audion VT1, N pole with process chip U FDBK pin be connected, P pole after resistance R6 with process chip U COM pin
Diode D2, the P pole being connected is connected with the VNEG pin processing chip U after resistance R7, the base of N pole and audion VT1
The diode D3 that pole is connected, the low-pass filter circuit being connected with the VINP pin processing chip U and GNEG pin respectively, with
And the signal transmitting modulate circuit composition being connected with audion VT1 emitter stage and process chip U respectively；Described audion
The colelctor electrode of VT1 is connected with the FDBK pin processing chip U.
Described low-pass filter circuit is by amplifier P1, and positive pole is connected with the positive pole of amplifier P1, negative pole is as low pass filtered
The polar capacitor C1 of the input of wave circuit, one end is connected with the negative pole of polar capacitor C1, the resistance R1 of other end ground connection, just
Pole negative pole with amplifier P1 after resistance R2 is connected, the polar capacitor C2 of minus earth, positive pole after resistance R3 with amplification
Polar capacitor C3, the P pole that the positive pole of device P 1 is connected, negative pole is connected with the outfan of amplifier P1 is with amplifier P1 just
The diode D1 that pole is connected, N pole negative pole with polar capacitor C3 after resistance R4 is connected, and negative pole is with amplifier P1's
The polar capacitor C4 composition that outfan is connected, positive pole is connected with the GNEG pin processing chip U after resistance R5；Described put
The outfan of big device P1 is connected with the VINP pin processing chip U.
Described signal is launched modulate circuit and is connected with the drain electrode of field effect transistor MOS by field effect transistor MOS, amplifier P2, N pole
Connect, P pole after resistance R8 with the diode D4 that is connected of VPOS pin processing chip U, negative pole after resistance R11 with amplifier
The polar capacitor C5 that the outfan of P2 is connected, positive pole is connected with the drain electrode of field effect transistor MOS after resistance R9, one end and field
The adjustable resistance R10 that the source electrode of effect pipe MOS is connected, the other end is connected with the outfan of amplifier P2, negative pole is imitated with field
Should the polar capacitor C6 that source electrode is connected, positive pole is connected with the positive pole of amplifier P2 of pipe MOS, positive pole is with audion VT1's
The polar capacitor C7 that emitter stage is connected, negative pole negative pole with amplifier P2 after resistance R12 is connected, positive pole and amplifier P2
Outfan be connected, negative pole launches the polar capacitor C8 of outfan of modulate circuit as signal, and positive pole and amplifier
The polar capacitor C9 composition that the outfan of P2 is connected, negative pole is connected with the negative pole of polar capacitor C8；Described polar capacitor C7
Minus earth；The grid of described field effect transistor MOS is connected with the VOUT pin processing chip U.
For the practical effect of the present invention, described process chip U the most preferentially uses the integrated chip of AD603 to realize.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) input signal can be produced by the present invention because of external interference electric wave Harmonics elimination or suppression；And the present invention
The bandwidth of output signal can also be adjusted, make output signal consistent with the collection signal of input, ensure that the present invention
Accuracy to signal processing, effectively ensure that light-operated LED control system opens and closes the accurate of control to LED
Property.
(2) the process chip of the present invention have employed the integrated chip of AD603 and realizes, and this chip performance is stable and external circuit
Combine the accuracy effectively raising the present invention to signal processing.
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 embodiments of the present invention are not
It is limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by processing chip U, audion VT1, N pole and the FDBK pin phase processing chip U
Connect, P pole after resistance R6 with diode D2, the P pole that is connected of COM pin processing chip U after resistance R7 with process core
The diode D3 that the VNEG pin of sheet U is connected, N pole is connected with the base stage of audion VT1, respectively with process chip U's
The low-pass filter circuit that VINP pin is connected with GNEG pin, and respectively with audion VT1 emitter stage and process chip U
The signal being connected launches modulate circuit composition；The colelctor electrode of described audion VT1 is connected with the FDBK pin processing chip U
Connect.
Wherein, described low-pass filter circuit is by amplifier P1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, pole
Property electric capacity C1, polar capacitor C2, polar capacitor C3, polar capacitor C4, and diode D1 composition.
During connection, the positive pole of polar capacitor C1 is connected with the positive pole of amplifier P1, its negative pole is as low-pass filter circuit
Input and be connected with luminance sensor.One end of resistance R1 is connected with the negative pole of polar capacitor C1, its another termination
Ground.The positive pole of polar capacitor C2 negative pole with amplifier P1 after resistance R2 is connected, its minus earth.Polar capacitor C3 is just
Pole positive pole with amplifier P 1 after resistance R3 is connected, its negative pole is connected with the outfan of amplifier P1.
Meanwhile, the P pole of diode D1 be connected with the positive pole of amplifier P1, its N pole after resistance R4 with polar capacitor C3
Negative pole be connected.The negative pole of polar capacitor C4 is connected with the outfan of amplifier P1, its positive pole after resistance R5 with process
The GNEG pin of chip U is connected.The outfan of described amplifier P1 is connected with the VINP pin processing chip U.
Further, described signal launches modulate circuit by field effect transistor MOS, and amplifier P2, resistance R8, resistance R9 can
Adjust resistance R10, resistance R11, resistance R12, polar capacitor C5, polar capacitor C6, polar capacitor C7, polar capacitor C8, polarity electricity
Hold C9, diode D4 composition.
During connection, the N pole of diode D4 is connected with the drain electrode of field effect transistor MOS, its P pole after resistance R8 with process core
The VPOS pin of sheet U is connected.The negative pole of polar capacitor C5 outfan with amplifier P2 after resistance R11 is connected, its just
Pole drain electrode with field effect transistor MOS after resistance R9 is connected.The source electrode phase of one end of adjustable resistance R10 and field effect transistor MOS
Connect, its other end is connected with the outfan of amplifier P2.
Meanwhile, the negative pole of polar capacitor C6 be connected with the source electrode of field effect transistor MOS, the positive pole of its positive pole and amplifier P2
It is connected.The positive pole of polar capacitor C7 is connected with the emitter stage of audion VT1, its negative pole after resistance R12 with amplifier P2
Negative pole be connected.The positive pole of polar capacitor C8 is connected with the outfan of amplifier P2, its negative pole launches conditioning as signal
The outfan of circuit is also connected with light-operated LED controller.The positive pole of polar capacitor C9 is connected with the outfan of amplifier P2,
Its negative pole is connected with the negative pole of polar capacitor C8.The minus earth of described polar capacitor C7；The grid of described field effect transistor MOS
It is connected with the VOUT pin processing chip U.
During enforcement, Harmonics elimination that input signal can be produced by the present invention because of external interference electric wave or suppression；And this
The bandwidth of output signal can also be adjusted by invention, makes output signal consistent with the collection signal of input, ensures that this
The invention accuracy to signal processing.Signal after analyzing and processing is converted to accurately after data signal and be transferred to by the present invention
The controller of light-operated LED control system, controller then controls the open and close of LED according to the data signal received.For
The practical effect of the present invention, described process chip U the most preferentially uses the integrated chip of AD603 to realize.
According to above-described embodiment, can well realize the present invention.
Claims (4)
1. a light-operated LED signal processing system, it is characterised in that mainly by processing chip U, audion VT1, N pole and place
Diode D2, the P pole that FDBK pin is connected, P pole is connected with the COM pin processing chip U after resistance R6 of reason chip U
With the diode D3 that VNEG pin is connected, N pole is connected with the base stage of audion VT1 processing chip U after resistance R7, point
The low-pass filter circuit not being connected with the VINP pin processing chip U and GNEG pin, and send out with audion VT1 respectively
The signal that emitter-base bandgap grading is connected with process chip U launches modulate circuit composition；The colelctor electrode of described audion VT1 and process chip U
FDBK pin be connected.
A kind of light-operated LED signal processing system the most according to claim 1, it is characterised in that described low-pass filtering electricity
Routing amplifier P1, positive pole is connected with the positive pole of amplifier P1, negative pole is electric as the polarity of the input of low-pass filter circuit
Hold C1, one end is connected with the negative pole of polar capacitor C1, the resistance R1 of other end ground connection, positive pole after resistance R2 with amplifier P1
Negative pole be connected, the polar capacitor C2 of minus earth, positive pole positive pole with amplifier P1 after resistance R3 is connected, negative pole with
Polar capacitor C3, the P pole that the outfan of amplifier P1 is connected is connected with the positive pole of amplifier P1, N pole after resistance R4 with
The diode D1 that the negative pole of polar capacitor C3 is connected, and negative pole is connected with the outfan of amplifier P1, positive pole is through resistance
The polar capacitor C4 composition being connected with the GNEG pin processing chip U after R5；The outfan of described amplifier P1 and process core
The VINP pin of sheet U is connected.
A kind of light-operated LED signal processing system the most according to claim 2, it is characterised in that described signal launches tune
Reason circuit by field effect transistor MOS, amplifier P2, N pole is connected with the drain electrode of field effect transistor MOS, P pole after resistance R8 with process
The diode D4 that the VPOS pin of chip U is connected, negative pole outfan with amplifier P2 after resistance R11 is connected, positive pole
The polar capacitor C5 being connected with the drain electrode of field effect transistor MOS after resistance R9, one end is connected with the source electrode of field effect transistor MOS
Connect, adjustable resistance R10 that the other end is connected with the outfan of amplifier P2, negative pole is connected with the source electrode of field effect transistor MOS,
The polar capacitor C6 that positive pole is connected with the positive pole of amplifier P2, positive pole is connected with the emitter stage of audion VT1, negative pole is through electricity
The polar capacitor C7 being connected with the negative pole of amplifier P2 after resistance R12, positive pole is connected with the outfan of amplifier P2, negative pole is made
Launch the polar capacitor C8 of the outfan of modulate circuit for signal, and positive pole is connected with the outfan of amplifier P2, negative pole
The polar capacitor C9 composition being connected with the negative pole of polar capacitor C8；The minus earth of described polar capacitor C7；Described field effect
The grid of pipe MOS is connected with the VOUT pin processing chip U.
A kind of light-operated LED signal processing system the most according to claim 3, it is characterised in that described process chip U is
The integrated chip of AD603.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610460108.8A CN106211415A (en) | 2016-06-22 | 2016-06-22 | A kind of light-operated LED signal processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610460108.8A CN106211415A (en) | 2016-06-22 | 2016-06-22 | A kind of light-operated LED signal processing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106211415A true CN106211415A (en) | 2016-12-07 |
Family
ID=57460849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610460108.8A Pending CN106211415A (en) | 2016-06-22 | 2016-06-22 | A kind of light-operated LED signal processing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106211415A (en) |
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2016
- 2016-06-22 CN CN201610460108.8A patent/CN106211415A/en active Pending
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161207 |