CN105979649A - Signal buffering circuit based signal processing system for light-controlled LED - Google Patents
Signal buffering circuit based signal processing system for light-controlled LED Download PDFInfo
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- CN105979649A CN105979649A CN201610459137.2A CN201610459137A CN105979649A CN 105979649 A CN105979649 A CN 105979649A CN 201610459137 A CN201610459137 A CN 201610459137A CN 105979649 A CN105979649 A CN 105979649A
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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 signal buffering circuit based signal processing system for a light-controlled LED. The signal processing system is characterized by mainly comprising a processing chip U, a triode VT1, a diode D2, a diode D3, a low-pass filter circuit, a signal emission conditioning circuit, and the signal buffering circuit, wherein the signal emission conditioning circuit is connected with the emitting electrode of the triode VT1 and the processing chip U separately; and the signal buffering circuit is connected between the signal emission conditioning circuit and the VOUT pin of the processing chip U in series. By adoption of the signal processing system, the harmonics generated by the input signal due to external interference electric waves can be eliminated or restrained; in addition, the bandwidth of the output signal can be adjusted; the output signal can be consistent to the input collected signal so as to ensure the accuracy of signal processing of the signal processing system; and in addition, the accuracy of the light-controlled LED control system on the opening and closing control of the LED lamp is effectively ensured.
Description
Technical field
The present invention relates to electronic applications, specifically, be that a kind of light-operated LED based on signal damping circuit is used
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 is
Become one of main product of people's life lighting.People's many employings acoustic control or light-operated control system in life
System realizes the open and close to LED.Light-operated LED control system can use according to LED because of it
The brightness of environment controls the open and close of LED, and can effectively meet people to LED energy-conservation
The requirement of aspect, and enjoy the favor of people.But, the signal processing of existing light-operated LED control system
Luminance signal is easily processed inaccurate by extraneous Electromagnetic Interference by system, causes the light-operated control system can not root
Intensity of illumination according to environment controls the open and close of LED accurately, thus cannot well meet people
Requirement at 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
The signal processing system that it is an object of the invention to overcome light-operated LED control system of the prior art is easy
By extraneous Electromagnetic Interference, luminance signal is processed inaccurate defect, it is provided that one delay based on signal
Rush the light-operated LED signal processing system of circuit.
The present invention is achieved through the following technical solutions: a kind of light-operated LED based on signal damping circuit is believed
Number processing system, mainly by processing chip U, audion VT1, N pole and the FDBK pipe processing chip U
The diode D2, P that foot is connected, P pole is connected with the COM pin processing chip U after resistance R6
Pole is connected with the VNEG pin processing chip U after resistance R7, the base stage of N pole and audion VT1
The diode D3 being connected is low with what the VINP pin processing chip U and GNEG pin were connected respectively
Bandpass filter circuit, the signal being connected with audion VT1 emitter stage and process chip U respectively launches conditioning
Circuit, and the signal being serially connected between signal transmitting modulate circuit and the VOUT pin processing chip U is slow
Rush circuit composition；The colelctor electrode of described audion VT1 is connected with the FDBK pin processing chip U.
Described signal damping electricity routing amplifier P3, positive pole is connected with the positive pole of amplifier P3, negative pole conduct
The input of signal damping circuit the polar capacitor C10 being connected with the VOUT pin processing chip U,
N pole negative pole with amplifier P3 after resistance R15 is connected, P pole after resistance R13 with polar capacitor
The diode D5 that the negative pole of C10 is connected, negative pole negative pole with amplifier P3 after resistance R16 is connected,
The polar capacitor C11 that positive pole is connected with the P pole of diode D5 after resistance R14, positive pole is through resistance R20
Afterwards the outfan with amplifier P3 be connected, the polar capacitor C12 of minus earth, negative pole is after resistance R19
Be connected with the outfan of amplifier P3, positive pole positive pole with amplifier P3 after resistance R17 is connected
Polar capacitor C13, and P pole is connected with the positive pole of amplifier P3, N pole after resistance R18 with polarity
The diode D6 composition that the negative pole of electric capacity C13 is connected；The minus earth of described polar capacitor C11；Institute
The outfan stating amplifier P3 as the outfan of signal damping circuit and is connected with signal transmitting modulate circuit
Connect.
Described low-pass filter circuit is by amplifier P1, and positive pole is connected with the positive pole of amplifier P1, negative pole conduct
The polar capacitor C1 of the input of low-pass filter circuit, one end is connected with the negative pole of polar capacitor C1, separately
The resistance R1 of one end ground connection, positive pole negative pole with amplifier P1 after resistance R2 is connected, minus earth
Polar capacitor C2, positive pole positive pole with amplifier P 1 after resistance R3 is connected, negative pole and amplifier P1
Polar capacitor C3, the P pole that is connected of outfan be connected with the positive pole of amplifier P1, N pole is through resistance
The diode D1 that after R4, negative pole with polar capacitor C3 is connected, and the output of negative pole and amplifier P1
The polar capacitor C4 that end is connected, positive pole is connected with the GNEG pin processing chip U after resistance R5
Composition；The outfan of described amplifier P1 is connected with the VINP pin processing chip U.
Described signal launches modulate circuit by field effect transistor MOS, amplifier P2, N pole and field effect transistor MOS
Drain electrode be connected, P pole after resistance R8 with the diode that is connected of VPOS pin processing chip U
D4, negative pole outfan with amplifier P2 after resistance R11 is connected, positive pole is imitated with field after resistance R9
Should the polar capacitor C5 that is connected of the drain electrode of pipe MOS, one end is connected with the source electrode of field effect transistor MOS,
The adjustable resistance R10 that the other end is connected with the outfan of amplifier P2, negative pole and field effect transistor MOS
The polar capacitor C6 that source electrode is connected, positive pole is connected with the positive pole of amplifier P2, positive pole and audion VT1
The polar capacitor C7 that emitter stage is connected, negative pole negative pole with amplifier P2 after resistance R12 is connected,
Positive pole is connected with the outfan of amplifier P2, negative pole launches the polarity of outfan of modulate circuit as signal
Electric capacity C8, and positive pole is connected with the outfan of amplifier P2, the negative pole phase of negative pole and polar capacitor C8
The polar capacitor C9 composition connected；The minus earth of described polar capacitor C7；Described field effect transistor MOS
Grid be connected with the outfan of amplifier P3.
For the practical effect of the present invention, described process chip U the most preferentially uses the integrated chip of AD603
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 bandwidth of output signal can also be adjusted by the present invention, makes 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 pair
The accuracy opening and closing control of LED.
(2) present invention can improve the switching rate of the signal swing that signal exports on a large scale, effectively raises
Light-operated LED control system opens and closes the speed and accuracy controlled to LED, thus well full
Foot people are in the requirement of energy-conservation aspect.
(3) the process chip of the present invention have employed the integrated chip of AD603 and realizes, this chip performance stable with
External circuit combines 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.
Fig. 2 is the electrical block diagram of the signal damping circuit 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 processing chip U, audion VT1, N pole and process chip U
FDBK pin be connected, P pole after resistance R6 with process chip U COM pin be connected two
Pole pipe D2, P pole is connected with the VNEG pin processing chip U after resistance R7, N pole and audion
The diode D3 that the base stage of VT1 is connected, respectively with VINP pin and the GNEG pin processing chip U
The low-pass filter circuit being connected, the letter being connected with audion VT1 emitter stage and process chip U respectively
Number launch modulate circuit, and be serially connected in signal launch modulate circuit with process chip U VOUT pin it
Between signal damping circuit composition；The colelctor electrode of described audion VT1 and the FDBK pin processing chip U
It is connected.
Wherein, described low-pass filter circuit is by amplifier P1, resistance R1, resistance R2, resistance R3, resistance
R4, resistance R5, polar capacitor C1, polar capacitor C2, polar capacitor C3, polar capacitor C4, and
Diode D1 forms.
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
The input of filter circuit is also connected with luminance sensor.One end of resistance R1 is negative with polar capacitor C1's
Pole is connected, its other end ground connection.The positive pole of polar capacitor C2 after resistance R2 with the negative pole of amplifier P1
Be connected, its minus earth.The positive pole of polar capacitor C3 after resistance R3 with the positive pole phase of amplifier P 1
Connect, its negative pole is connected with the outfan of amplifier P1.
Meanwhile, the P pole of diode D1 is connected with the positive pole of amplifier P1, its N pole is after resistance R4
It is connected with the negative pole of polar capacitor C3.The negative pole of polar capacitor C4 is connected with the outfan of amplifier P1,
Its positive pole is connected with the GNEG pin processing chip U after resistance R5.The output of described amplifier P1
The VINP pin held and process chip U is connected.
Further, described signal launches modulate circuit by field effect transistor MOS, amplifier P2, resistance R8,
Resistance R9, adjustable resistance R10, resistance R11, resistance R12, polar capacitor C5, polar capacitor C6,
Polar capacitor C7, polar capacitor C8, polar capacitor C9, diode D4 form.
During connection, the N pole of diode D4 is connected with the drain electrode of field effect transistor MOS, its P pole is through electricity
It is connected with the VPOS pin processing chip U after resistance R8.The negative pole of polar capacitor C5 is after resistance R11
Be connected with the outfan of amplifier P2, the drain electrode with field effect transistor MOS after resistance R9 of its positive pole is connected
Connect.One end of adjustable resistance R10 is connected with the source electrode of field effect transistor MOS, its other end and amplifier
The outfan of P2 is connected.
Meanwhile, the negative pole of polar capacitor C6 be connected with the source electrode of field effect transistor MOS, its positive pole and amplification
The positive pole of device P2 is connected.The positive pole of polar capacitor C7 is connected with the emitter stage of audion VT1, it is born
Pole negative pole with amplifier P2 after resistance R12 is connected.The positive pole of polar capacitor C8 and amplifier P2
Outfan be connected, its negative pole as signal launch modulate circuit outfan and with light-operated LED controller
It is connected.The positive pole of polar capacitor C9 is connected with the outfan of amplifier P2, its negative pole and polar capacitor
The negative pole of C8 is connected.The minus earth of described polar capacitor C7；The grid of described field effect transistor MOS with
The outfan of amplifier P3 is connected.
As in figure 2 it is shown, described signal damping electricity routing amplifier P3, resistance R13, resistance R14, resistance
R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, polar capacitor C10,
Polar capacitor C11, polar capacitor C12, polar capacitor C13, diode D5, and diode D6 form.
During connection, the positive pole of polar capacitor C10 is connected with the positive pole of amplifier P3, its negative pole is as signal
The input of buffer circuit is also connected with the VOUT pin processing chip U.The N pole warp of diode D5
After resistance R15 the negative pole with amplifier P3 be connected, its P pole after resistance R13 with polar capacitor C10
Negative pole be connected.The negative pole of polar capacitor C11 negative pole with amplifier P3 after resistance R16 is connected,
Its positive pole P pole with diode D5 after resistance R14 is connected.
Meanwhile, the positive pole of polar capacitor C12 outfan with amplifier P3 after resistance R20 be connected, its
Minus earth.The negative pole of polar capacitor C13 outfan with amplifier P3 after resistance R19 is connected, it
Positive pole positive pole with amplifier P3 after resistance R17 is connected.The P pole of diode D6 and amplifier P3
Positive pole be connected, its N pole negative pole with polar capacitor C13 after resistance R18 is connected.Described polarity
The minus earth of electric capacity C11；The outfan of described amplifier P3 as signal damping circuit outfan and with
Signal is launched modulate circuit and is connected.
During enforcement, 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 the collection signal one of output signal and input
Cause, ensure that the present invention accuracy to signal processing.The present invention is by the signal conversion after analyzing and processing
For after data signal accurately and be transferred to the controller of light-operated LED control system, controller is then according to reception
Data signal control the open and close of LED.
Meanwhile, the present invention can improve the switching rate of the signal swing that signal exports on a large scale, effectively improves
Light-operated LED control system opens and closes the speed and accuracy controlled to LED, thus well
Meet people's requirement at energy-conservation aspect.For the practical effect of the present invention, described process chip U is then
The preferential employing integrated chip of AD603 realizes.
According to above-described embodiment, can well realize the present invention.
Claims (5)
1. a light-operated LED signal processing system based on signal damping circuit, it is characterised in that main
Will be by processing chip U, audion VT1, N pole is connected with the FDBK pin processing chip U, P pole
Diode D2, the P pole being connected with the COM pin processing chip U after resistance R6 is after resistance R7
With the diode that VNEG pin is connected, N pole is connected with the base stage of audion VT1 processing chip U
D3, the low-pass filter circuit being connected with the VINP pin processing chip U and GNEG pin respectively, point
The signal not being connected with audion VT1 emitter stage and process chip U launches modulate circuit, and concatenation
The signal damping circuit composition between modulate circuit and the VOUT pin processing chip U is launched at signal；Institute
The colelctor electrode stating audion VT1 is connected with the FDBK pin processing chip U.
A kind of light-operated LED signal processing based on signal damping circuit the most according to claim 1
System, it is characterised in that described signal damping electricity routing amplifier P3, the positive pole phase of positive pole and amplifier P3
Connect, negative pole as the input of signal damping circuit and is connected with the VOUT pin processing chip U
Polar capacitor C10, N pole negative pole with amplifier P3 after resistance R15 is connected, P pole is through resistance R13
The diode D5 that negative pole with polar capacitor C10 is connected afterwards, negative pole after resistance R16 with amplifier P3
The polar capacitor C11 that negative pole is connected, positive pole is connected with the P pole of diode D5 after resistance R14,
Positive pole outfan with amplifier P3 after resistance R20 is connected, the polar capacitor C12 of minus earth, negative
Pole outfan with amplifier P3 after resistance R19 is connected, positive pole after resistance R17 with amplifier P3
The polar capacitor C13 that is connected of positive pole, and P pole is connected with the positive pole of amplifier P3, N pole is through electricity
The diode D6 composition being connected with the negative pole of polar capacitor C13 after resistance R18；Described polar capacitor C11
Minus earth；The outfan of described amplifier P3 as the outfan of signal damping circuit and is launched with signal
Modulate circuit is connected.
A kind of light-operated LED signal processing based on signal damping circuit the most according to claim 2
System, it is characterised in that described low-pass filter circuit by amplifier P1, the positive pole phase of positive pole and amplifier P1
Connect, negative pole as the polar capacitor C1 of the input of low-pass filter circuit, one end is with polar capacitor C1's
Negative pole is connected, the resistance R1 of other end ground connection, and positive pole negative pole with amplifier P1 after resistance R2 is connected
Connect, the polar capacitor C2 of minus earth, positive pole positive pole with amplifier P 1 after resistance R3 is connected, negative
Polar capacitor C3, the P pole that pole is connected with the outfan of amplifier P1 is connected with the positive pole of amplifier P1,
The diode D1 that N pole negative pole with polar capacitor C3 after resistance R4 is connected, and negative pole and amplifier
The pole that the outfan of P1 is connected, positive pole is connected with the GNEG pin processing chip U after resistance R5
Property electric capacity C4 composition；The outfan of described amplifier P1 is connected with the VINP pin processing chip U.
A kind of light-operated LED signal processing based on signal damping circuit the most according to claim 3
System, it is characterised in that described signal launches modulate circuit by field effect transistor MOS, amplifier P2, N pole
Be connected with the drain electrode of field effect transistor MOS, P pole after resistance R8 with process chip U VPOS pin
The diode D4 being connected, negative pole outfan with amplifier P2 after resistance R11 is connected, positive pole warp
The polar capacitor C5 being connected with the drain electrode of field effect transistor MOS after resistance R9, one end and field effect transistor MOS
The adjustable resistance R10 that source electrode is connected, the other end is connected with the outfan of amplifier P2, negative pole and field
The polar capacitor C6 that the source electrode of effect pipe MOS is connected, positive pole is connected with the positive pole of amplifier P2, just
Pole is connected with the emitter stage of audion VT1, negative pole negative pole with amplifier P2 after resistance R12 is connected
The polar capacitor C7 connect, positive pole is connected with the outfan of amplifier P2, negative pole launches conditioning as signal
The polar capacitor C8 of the outfan of circuit, and positive pole is connected with the outfan of amplifier P2, negative pole with
The polar capacitor C9 composition that the negative pole of polar capacitor C8 is connected；The minus earth of described polar capacitor C7；
The grid of described field effect transistor MOS is connected with the outfan of amplifier P3.
A kind of light-operated LED signal processing based on signal damping circuit the most according to claim 4
System, 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 |
|---|---|---|---|
| CN201610459137.2A CN105979649A (en) | 2016-06-22 | 2016-06-22 | Signal buffering circuit based signal processing system for light-controlled LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459137.2A CN105979649A (en) | 2016-06-22 | 2016-06-22 | Signal buffering circuit based signal processing system for light-controlled LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105979649A true CN105979649A (en) | 2016-09-28 |
Family
ID=57021927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610459137.2A Pending CN105979649A (en) | 2016-06-22 | 2016-06-22 | Signal buffering circuit based signal processing system for light-controlled LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105979649A (en) |
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2016
- 2016-06-22 CN CN201610459137.2A patent/CN105979649A/en active Pending
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Application publication date: 20160928 |