CN107743328A - A kind of light-operated LED signal frequency split anti-interference processing system - Google Patents
A kind of light-operated LED signal frequency split anti-interference processing system Download PDFInfo
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- CN107743328A CN107743328A CN201711091961.8A CN201711091961A CN107743328A CN 107743328 A CN107743328 A CN 107743328A CN 201711091961 A CN201711091961 A CN 201711091961A CN 107743328 A CN107743328 A CN 107743328A
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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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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/01—Details
- H03K3/013—Modifications of generator to prevent operation by noise or interference
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/00006—Changing the frequency
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/01—Shaping pulses
- H03K5/04—Shaping pulses by increasing duration; by decreasing duration
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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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Abstract
The invention discloses a kind of light-operated LED signal frequency split anti-interference processing system, it is characterized in that, mainly by process chip U, triode VT1, diode D2, diode D3, low-pass filter circuit, signal transmitting modulate circuit, anti-electromagnetic wave interference circuit, signal offset correction circuit, and signal buffer circuit composition.The present invention can by input signal because of external interference electric wave and caused by Harmonics elimination or suppression；And the present invention can also be adjusted to the bandwidth of output signal, make output signal consistent with the collection signal inputted, accuracy of the present invention to signal transacting is ensured that, effectively ensure that the accuracy that open and close of the light-operated LED control system to LED control.
Description
Technical field
The present invention relates to a kind of signal processing system, is that a kind of light-operated LED signal frequency split is anti-interference specifically
Formula processing system.
Background technology
At present, because LED has the characteristics that energy consumption is low, service life is long and safety and environmental protection, it has become people
One of the main product of life lighting.People are realized to LED using acoustic control or light-operated control system more in life
Open and close.Light-operated LED control system can control the unlatching of LED and pass because of it according to the brightness of LED use environment
Close, and can effectively meet requirement of the people to LED in terms of energy-conservation, and enjoy the favor of people.It is however, existing light-operated
The signal processing system of LED control system is easily inaccurate to luminance signal processing by the Electromagnetic Interference in the external world, causes light-operated
Control system can not accurately control the open and close of LED according to the intensity of illumination of environment, so as to meet people well
Requirement in terms of energy-conservation.
Therefore it provides a kind of can be the task of top priority to the signal processing system of the accurate processing of luminance signal.
The content 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 processing it is inaccurate the defects of, there is provided a kind of light-operated LED signal frequency split anti-interference
Processing system.
The present invention is achieved through the following technical solutions：A kind of light-operated LED signal frequency split anti-interference processing system, it is main
By process chip U, triode VT1, signal process chip U FDBK pin and triode VT1 colelctor electrode between is concatenated
Offset correction circuit, N poles are connected with process chip U FDBK pins, COM pin of the P poles after resistance R6 with process chip U
Diode D2, the P pole being connected is connected after resistance R7 with process chip U VNEG pins, N poles and triode VT1 base
The diode D3 that pole is connected, the low-pass filter circuit being connected respectively with process chip U VINP pins and GNEG pins, point
The signal transmitting modulate circuit not being connected with triode VT emitter stage and process chip U, launches modulate circuit phase with signal
The anti-electromagnetic wave interference circuit of connection and the letter being serially connected between signal transmitting modulate circuit and process chip U VOUT pins
Number buffer circuit composition；The colelctor electrode of the triode VT1 is connected with process chip U FDBK pins；The anti-electromagnetic wave
Circuit is disturbed by FET MOS101, FET MOS102, amplifier P101, the drain electrode of positive pole and FET MOS101
It is connected, polar capacitor C101, the P pole of negative pole ground connection is connected with polar capacitor C101 negative pole, N poles are through adjustable resistance R101
The diode D101 being connected afterwards with amplifier P101 negative pole, one end are connected with FET MOS101 grid, are another
Hold the inductance L101 being connected with FET MOS102 drain electrode, N pole phase of the positive pole after resistance R102 with diode D101
Polar capacitor C102, the N pole that connection, negative pole are grounded after being connected with amplifier P101 output end is with FET MOS102's
The diode D102 that source electrode is connected, N poles are connected after resistance R103 with FET MOS102 grid, one end and two poles
The inductance L102 that pipe D102 P poles are connected, the other end is connected with amplifier P101 output end, and one end and field-effect
The inductance L103 compositions that pipe MOS102 grid is connected, the other end is connected with amplifier P101 output end；The field effect
Should pipe MOS101 drain electrode and signal transmitting modulate circuit be connected, FET MOS101 source electrode is connected with external power source
Connect；Positive pole of the grid of the FET MOS102 also with amplifier P101 is connected；The output end of the amplifier P101
Output end as anti-electromagnetic wave interference circuit.
The signal offset correction circuit is by triode VT2, triode VT3, positive pole after adjustable resistance R24 with triode
VT3 base stage is connected, negative pole as signal offset correction circuit input and be connected with process chip U FDBK pins
Polar capacitor C15, positive pole is connected after resistance R21 with polar capacitor C15 negative pole, negative pole ground connection polar capacitor C14,
It is connected after the adjustable resistance R26 of N poles with triode VT3 colelctor electrode, negative pole phase of the P poles after resistance R23 with polar capacitor C14
The diode D9 of connection, the pole that negative pole is connected with triode VT2 base stage, positive pole is connected with polar capacitor C15 negative pole
Property electric capacity C16, N poles are connected with triode VT2 colelctor electrode, positive pole of the P poles with polar capacitor C16 after resistance R22 is connected
Diode D7, the P pole connect is connected after resistance R27 with triode VT3 emitter stage, N poles are as signal offset correction circuit
Output end and the diode D8 that is connected with triode VT1 colelctor electrode, and positive pole after resistance R25 with triode VT2
Colelctor electrode be connected, polar capacitor C17 that negative pole is connected after resistance R28 with diode D8 N poles composition；Three pole
Pipe VT2 emitter stage is connected with adjustable resistance R24 adjustable end.
The signal buffer circuit is by amplifier P3, and positive pole is connected with amplifier P3 positive pole, negative pole delays as signal
Polar capacitor C10, the N pole for rushing the input of circuit and being connected with process chip U VOUT pins after resistance R15 with amplification
The diode D5 that device P3 negative pole is connected, P poles are connected after resistance R13 with polar capacitor C10 negative pole, negative pole is through resistance
It is connected after R16 with amplifier P3 negative pole, the polar capacitor that positive pole is connected after resistance R14 with diode D5 P poles
C11, positive pole is connected after resistance R20 with amplifier P3 output end, the polar capacitor C12 of negative pole ground connection, and negative pole is through resistance
It is connected after R19 with amplifier P3 output end, the polar capacitor that positive pole is connected after resistance R17 with amplifier P3 positive pole
C13, and P poles are connected with amplifier P3 positive pole, N poles are connected after resistance R18 with polar capacitor C13 negative pole two
Pole pipe D6 is formed；The negative pole ground connection of the polar capacitor C11；The output end of the amplifier P3 is as the defeated of signal buffer circuit
Go out end and be connected with signal transmitting modulate circuit.
The low-pass filter circuit is by amplifier P1, and positive pole is connected with amplifier P1 positive pole, negative pole is as low pass filtered
The polar capacitor C1 of the input of wave circuit, one end is connected with polar capacitor C1 negative pole, the resistance R1 of other end ground connection, just
Pole is connected after resistance R2 with amplifier P1 negative pole, negative pole ground connection polar capacitor C2, positive pole after resistance R3 with amplification
Polar capacitor C3, the P pole that device P1 positive pole is connected, negative pole is connected with amplifier P1 output end and amplifier P1 positive pole
It is connected, the diode D1 that N poles are connected after resistance R4 with polar capacitor C3 negative pole, and negative pole and amplifier P1's is defeated
Go out the polar capacitor C4 compositions that end is connected, positive pole is connected after resistance R5 with process chip U GNEG pins；The amplification
Device P1 output end is connected with process chip U VINP pins.
The signal transmitting modulate circuit is connected by FET MOS, amplifier P2, N pole with FET MOS drain electrode
Connect, the diode D4 that P poles are connected after resistance R8 with process chip U VPOS pins, negative pole after resistance R11 with amplifier
The polar capacitor C5 that P2 output end is connected, positive pole is connected after resistance R9 with FET MOS drain electrode, one end and field
The adjustable resistance R10 that effect pipe MOS source electrode is connected, the other end is connected with amplifier P2 output end, negative pole are imitated with field
Should pipe MOS source electrode be connected, the polar capacitor C6 that positive pole is connected with amplifier P2 positive pole, positive pole and triode VT1's
The polar capacitor C7 that emitter stage is connected, negative pole is connected after resistance R12 with amplifier P2 negative pole, positive pole and amplifier P2
Output end be connected, polar capacitor C8 of the negative pole as the output end of signal transmitting modulate circuit, and positive pole and amplifier
The polar capacitor C9 compositions that P2 output end is connected, negative pole is connected with polar capacitor C8 negative pole；The polar capacitor C7
Negative pole ground connection；The grid of the FET MOS is connected with amplifier P3 output end；The negative pole of the polar capacitor C8
Drain electrode with FET MOS101 is connected.
For the practical effect of the present invention, the process chip U is then preferentially realized using AD603 integrated chips.
The present invention compared with prior art, has advantages below and beneficial effect：
(1) present invention can by input signal because of external interference electric wave and caused by 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 inputted, ensure that the present invention
To the accuracy of signal transacting, it is accurate effectively to ensure that open and close of the light-operated LED control system to LED control
Property.
(2) the anti-electromagnetic wave interference circuit that the present invention is set can carry out scaling down processing to signal, i.e. the circuit will can input
The height frequency of signal separated, and the Electromagnetic Interference signal in height frequency is eliminated respectively, believes output
It is number more accurate, more steady.
(3) the signal offset drift caused by the reasons such as temperature is corrected in present invention energy signal transacting, makes signal
Dead point held stationary, so as to improve accuracy of the present invention to signal transacting.
(4) present invention can improve the switching rate for the signal swing that signal exports on a large scale, effectively raise light-operated LED
The speed and accuracy that open and close of the control system to LED control, so as to meet people in terms of energy-conservation well
It is required that.
(5) process chip of the invention employs AD603 integrated chips to realize, chip performance stabilization and external circuit
It is combined and effectively raises accuracy of the present invention to signal transacting.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the electrical block diagram of the signal buffer circuit of the present invention.
Fig. 3 is the electrical block diagram of signal offset correction circuit.
Fig. 4 is that the anti-electromagnetic wave of the present invention disturbs the electrical block diagram of circuit.
Embodiment
The present invention is described in further detail with reference to embodiment and its accompanying drawing, but embodiments of the present invention are not
It is limited to this.
Embodiment
As shown in figure 1, the present invention is mainly by process chip U, triode VT1, concatenation process chip U FDBK pins and three
Signal offset correction circuit between pole pipe VT1 colelctor electrode, N poles are connected with process chip U FDBK pins, P poles are through electricity
VNEG pin of diode D2, the P pole being connected after resistance R6 with process chip U COM pins after resistance R7 with process chip U
It is connected, the diode D3 that N poles are connected with triode VT1 base stage, the VINP pins and GNEG with process chip U are managed respectively
The low-pass filter circuit that pin is connected, the signal transmitting conditioning being connected respectively with triode VT emitter stage and process chip U
Circuit, circuit is disturbed with the anti-electromagnetic wave that is connected of signal transmitting modulate circuit, and be serially connected in signal transmitting modulate circuit with
Signal buffer circuit composition between process chip U VOUT pins；The colelctor electrode of the triode VT1 is with process chip U's
FDBK pins are connected.
Wherein, the 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, polar capacitor C1 positive pole is connected with amplifier P1 positive pole, its negative pole is as low-pass filter circuit
Input and be connected with luminance sensor.Resistance R1 one end is connected with polar capacitor C1 negative pole, its another termination
Ground.Polar capacitor C2 positive pole is connected after resistance R2 with amplifier P1 negative pole, its negative pole ground connection.Polar capacitor C3 is just
Pole is connected after resistance R3 with amplifier P1 positive pole, its negative pole is connected with amplifier P1 output end.
Meanwhile diode D1 P poles are connected with amplifier P1 positive pole, its N pole after resistance R4 with polar capacitor C3
Negative pole be connected.Polar capacitor C4 negative pole is connected with amplifier P1 output end, its positive pole after resistance R5 with processing
Chip U GNEG pins are connected.The output end of the amplifier P1 is connected with process chip U VINP pins.
Further, the signal launches modulate circuit by FET MOS, 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 compositions.
During connection, diode D4 N poles are connected with FET MOS drain electrode, its P pole after resistance R8 with handling core
Piece U VPOS pins are connected.Polar capacitor C5 negative pole is connected after resistance R11 with amplifier P2 output end, its just
Drain electrode of the pole with FET MOS after resistance R9 is connected.Adjustable resistance R10 one end and FET MOS source electrode phase
Connection, its other end are connected with amplifier P2 output end.
Meanwhile polar capacitor C6 negative pole is connected with FET MOS source electrode, the positive pole of its positive pole and amplifier P2
It is connected.Polar capacitor C7 positive pole is connected with triode VT1 emitter stage, its negative pole after resistance R12 with amplifier P2
Negative pole be connected.Polar capacitor C8 positive pole is connected with amplifier P2 output end, its negative pole launches conditioning as signal
The output end of circuit is simultaneously connected with light-operated LED controller.Polar capacitor C9 positive pole is connected with amplifier P2 output end,
Its negative pole is connected with polar capacitor C8 negative pole.The negative pole ground connection of the polar capacitor C7；The grid of the FET MOS
It is connected with amplifier P3 output end.The negative pole of the polar capacitor C8 is connected with FET MOS101 drain electrode.
As shown in Fig. 2 the signal buffer circuit is by 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 compositions.
During connection, polar capacitor C10 positive pole is connected with amplifier P3 positive pole, its negative pole is as signal buffer circuit
Input and be connected with process chip U VOUT pins.Diode D5 N poles are negative with amplifier P3 after resistance R15
Pole is connected, its negative pole of P poles with polar capacitor C10 after resistance R13 is connected.Polar capacitor C11 negative pole is through resistance R16
It is connected afterwards with amplifier P3 negative pole, its positive pole is connected after resistance R14 with diode D5 P poles.
Meanwhile polar capacitor C12 positive pole is connected after resistance R20 with amplifier P3 output end, its negative pole ground connection.
Polar capacitor C13 negative pole is connected after resistance R19 with amplifier P3 output end, its positive pole after resistance R17 with amplification
Device P3 positive pole is connected.Diode D6 P poles are connected with amplifier P3 positive pole, its N pole is electric with polarity after resistance R18
The negative pole for holding C13 is connected.The negative pole ground connection of the polar capacitor C11；The output end of the amplifier P3 buffers as signal
The output end of circuit is simultaneously connected with signal transmitting modulate circuit.
As shown in figure 3, the signal offset correction circuit is by triode VT2, triode VT3, resistance R21, resistance R22,
Resistance R23, adjustable resistance R24, resistance R25, adjustable resistance R26, resistance R27, resistance R28, polar capacitor C14, polar capacitor
C15, polar capacitor C16, polar capacitor C17, diode D7, diode D8, and diode D9 compositions.
During connection, polar capacitor C15 positive pole is connected after adjustable resistance R24 with triode VT3 base stage, its negative pole
As signal offset correction circuit input and be connected with process chip U FDBK pins.Polar capacitor C14 positive pole warp
It is connected after resistance R21 with polar capacitor C15 negative pole, its negative pole ground connection.With three after diode D9 N poles adjustable resistance R26
Pole pipe VT3 colelctor electrode is connected, its negative pole of P poles with polar capacitor C14 after resistance R23 is connected.Polar capacitor C16's
Negative pole is connected with triode VT2 base stage, its positive pole is connected with polar capacitor C15 negative pole.
Meanwhile diode D7 N poles are connected with triode VT2 colelctor electrode, its P pole is electric with polarity after resistance R22
The positive pole for holding C16 is connected.Diode D8 P poles are connected after resistance R27 with triode VT3 emitter stage, its N poles conduct
The output end of signal offset correction circuit is simultaneously connected with triode VT1 colelctor electrode.Polar capacitor C17 positive pole is through resistance
It is connected after R25 with triode VT2 colelctor electrode, its negative pole is connected after resistance R28 with diode D8 N poles.Described three
Pole pipe VT2 emitter stage is connected with adjustable resistance R24 adjustable end.
As shown in figure 4, the anti-electromagnetic wave disturbs circuit by FET MOS101, FET MOS102, amplifier
P101, polar capacitor C101, polar capacitor C102, adjustable resistance R101, resistance R102, resistance R103, diode D101, two poles
Pipe D102, inductance L101, inductance L012, and inductance L103 compositions.
During connection, polar capacitor C101 positive pole is connected with FET MOS101 drain electrode, negative pole ground connection.Diode
D101 P poles are connected with polar capacitor C101 negative pole, negative pole of the N poles with amplifier P101 after adjustable resistance R101 is connected
Connect.Inductance L101 one end is connected with FET MOS101 grid, the other end and FET MOS102 drain electrode phase
Connection.Polar capacitor C102 positive pole is connected after resistance R102 with diode D101 N poles, negative pole and amplifier P101
Output end is grounded after being connected.Diode D102 N poles are connected with FET MOS102 source electrode, N poles are through resistance R103
The grid with FET MOS102 is connected afterwards.Inductance L102 one end is connected with diode D102 P poles, the other end with
Amplifier P101 output end is connected.Inductance L103 one end is connected with FET MOS102 grid, the other end with
Amplifier P101 output end is connected.
The drain electrode of the FET MOS101 is connected with signal transmitting modulate circuit, FET MOS101 source
Pole is connected with external power source, and its external power source is 12V DC voltage.The grid of the FET MOS102 also with amplification
Device P101 positive pole is connected；The output end of the amplifier P101 as anti-electromagnetic wave interference circuit output end and with it is light-operated
LED control system is connected, and for light-operated LED control, system provides accurate control signal source, to ensure that light-operated LED control system can be accurate
True is controlled to LED.
Wherein, during the operation of anti-electromagnetic wave interference circuit, FET MOS101 and FET MOS102 and inductance
L101 forms frequency dividing circuit, grid output of the high-frequency signal in its signal through FET MOS101, and passes through inductance L101
Exported after carrying out magnetic reactance processing through FET MOS102；And the low frequency signal in signal is then through polar capacitor C101 and diode
The signalling channel that D101 is formed delivers to the low frequency amplification that amplifier P101 and adjustable resistance R101 and polar capacitor C102 are formed
Device enters line frequency amplification, and the low frequency signal after frequency amplification carries out magnetic reactance processing through inductance L103, finally after its separating treatment
Signal is merged into a complete signal frequency in the letter frequency passage that inductance L102 and diode D102 is formed.Therefore, should
Circuit separates to the height frequency of the signal of input by carrying out scaling down processing to signal, realizes the height to signal
Electromagnetic Interference signal in low frequency is eliminated respectively, makes output signal more accurate, more steady.
During implementation, the present invention can by input signal because of external interference electric wave and caused by Harmonics elimination or suppression；And this
Invention can also be adjusted to the bandwidth of output signal, make output signal consistent with the collection signal inputted, and by analysis
Signal after reason is converted to disturbs circuit to carry out scaling down processing to signal after accurate data-signal by anti-electromagnetic wave, i.e., to letter
Number height frequency separated, while the Electromagnetic Interference signal in height frequency is eliminated respectively, its anti-electromagnetic wave
Interference circuit finally provides an accurate control information for the controller of light-operated LED control system.Also, the present invention will analysis
Signal after processing is converted to after accurate data-signal and is transferred to the controller of light-operated LED control system, controller then root
The open and close of LED are controlled according to the data-signal of reception.Thus it is ensured that accuracy of the present invention to signal transacting,
The accuracy that the effective open and close that ensure that light-operated LED control system to LED control.
Meanwhile present invention employs AD603 integrated chips to be used as process chip U, the chip performance is stable and external electrical
Road, which is combined, effectively raises accuracy of the present invention to signal transacting.The present invention can improve the signal that signal exports on a large scale
The switching rate of the amplitude of oscillation, effectively raise speed that open and close of the light-operated LED control system to LED control and accurate
Property, so as to meet requirement of the people in terms of energy-conservation well.For the practical effect of the present invention, the process chip U
Then preferentially realized using AD603 integrated chips.
According to above-described embodiment, you can realize the present invention well.
Claims (6)
1. a kind of light-operated LED signal frequency split anti-interference processing system, it is characterised in that mainly by process chip U, triode
VT1, the signal offset correction circuit between concatenation process chip U FDBK pins and triode VT1 colelctor electrode, N poles and place
Reason chip U FDBK pins are connected, diode D2, the P poles that P poles are connected after resistance R6 with process chip U COM pins
It is connected after resistance R7 with process chip U VNEG pins, the diode D3 that N poles are connected with triode VT1 base stage, point
The low-pass filter circuit not being connected with process chip U VINP pins and GNEG pins, respectively with triode VT emitter stage
The signal transmitting modulate circuit being connected with process chip U, the anti-electromagnetic wave being connected with signal transmitting modulate circuit disturb electricity
Road and the signal buffer circuit being serially connected between signal transmitting modulate circuit and process chip U VOUT pins form；It is described
Triode VT1 colelctor electrode is connected with process chip U FDBK pins；The anti-electromagnetic wave disturbs circuit by FET
MOS101, FET MOS102, amplifier P101, positive pole is connected with FET MOS101 drain electrode, negative pole is grounded
Polar capacitor C101, P pole is connected with polar capacitor C101 negative pole, N poles after adjustable resistance R101 with amplifier P101's
The diode D101 that negative pole is connected, one end is connected with FET MOS101 grid, the other end and FET
The inductance L101 that MOS102 drain electrode is connected, positive pole is connected after resistance R102 with diode D101 N poles, negative pole is with putting
Polar capacitor C102, the N pole that big device P101 output end is grounded after being connected is connected with FET MOS102 source electrode, N
The diode D102 that pole is connected after resistance R103 with FET MOS102 grid, one end and diode D102 P poles
It is connected, the inductance L102 that the other end is connected with amplifier P101 output end, and one end is with FET MOS102's
The inductance L103 compositions that grid is connected, the other end is connected with amplifier P101 output end；The FET MOS101
Drain electrode and signal transmitting modulate circuit be connected, FET MOS101 source electrode is connected with external power source；The field
Positive pole of the effect pipe MOS102 grid also with amplifier P101 is connected；The output end of the amplifier P101 is as anti-electromagnetism
The output end of wave interference circuit.
A kind of 2. light-operated LED according to claim 1 signal frequency split anti-interference processing system, it is characterised in that institute
Signal offset correction circuit is stated by triode VT2, triode VT3, base stage of the positive pole after adjustable resistance R24 with triode VT3
Be connected, negative pole as signal offset correction circuit input and be connected with process chip U FDBK pins polarity electricity
Hold C15, positive pole is connected after resistance R21 with polar capacitor C15 negative pole, the polar capacitor C14, N of negative pole ground connection are extremely adjustable
It is connected after resistance R26 with triode VT3 colelctor electrode, P poles are connected after resistance R23 with polar capacitor C14 negative pole
Diode D9, the polar capacitor that negative pole is connected with triode VT2 base stage, positive pole is connected with polar capacitor C15 negative pole
C16, N pole are connected with triode VT2 colelctor electrode, P poles are connected after resistance R22 with polar capacitor C16 positive pole two
Pole pipe D7, P pole is connected after resistance R27 with triode VT3 emitter stage, output of the N poles as signal offset correction circuit
The diode D8 for holding and being connected with triode VT1 colelctor electrode, and current collection of the positive pole after resistance R25 with triode VT2
The polar capacitor C17 compositions that pole is connected, negative pole is connected after resistance R28 with diode D8 N poles；The triode VT2
Emitter stage be connected with adjustable resistance R24 adjustable end.
A kind of 3. light-operated LED according to claim 2 signal frequency split anti-interference processing system, it is characterised in that institute
Signal buffer circuit is stated by amplifier P3, positive pole is connected with amplifier P3 positive pole, negative pole is defeated as signal buffer circuit
Enter negative pole of polar capacitor C10, the N pole held and be connected with process chip U VOUT pins after resistance R15 with amplifier P3
It is connected, the diode D5 that P poles are connected after resistance R13 with polar capacitor C10 negative pole, negative pole is after resistance R16 with putting
Big device P3 negative pole is connected, the polar capacitor C11 that positive pole is connected after resistance R14 with diode D5 P poles, and positive pole is through electricity
Resistance R20 after be connected with amplifier P3 output end, negative pole ground connection polar capacitor C12, negative pole after resistance R19 with amplifier
The polar capacitor C13 that P3 output end is connected, positive pole is connected after resistance R17 with amplifier P3 positive pole, and P poles with
The diode D6 compositions that amplifier P3 positive pole is connected, N poles are connected after resistance R18 with polar capacitor C13 negative pole；Institute
State polar capacitor C11 negative pole ground connection；Output end and and signal of the output end of the amplifier P3 as signal buffer circuit
Transmitting modulate circuit is connected.
A kind of 4. light-operated LED according to claim 3 signal frequency split anti-interference processing system, it is characterised in that institute
Low-pass filter circuit is stated by amplifier P1, positive pole is connected with amplifier P1 positive pole, negative pole is as the defeated of low-pass filter circuit
Enter the polar capacitor C1 at end, one end is connected with polar capacitor C1 negative pole, the resistance R1 of other end ground connection, and positive pole is through resistance R2
It is connected afterwards with amplifier P1 negative pole, the polar capacitor C2 of negative pole ground connection, positive pole of the positive pole after resistance R3 with amplifier P1
It is connected, polar capacitor C3, the P pole that negative pole is connected with amplifier P1 output end is connected with amplifier P1 positive pole, N poles
The diode D1 being connected after resistance R4 with polar capacitor C3 negative pole, and negative pole are connected with amplifier P1 output end
Connect, the polar capacitor C4 compositions that positive pole is connected after resistance R5 with process chip U GNEG pins；The amplifier P1's is defeated
Go out end with process chip U VINP pins to be connected.
A kind of 5. light-operated LED according to claim 4 signal frequency split anti-interference processing system, it is characterised in that institute
State signal and launch modulate circuit by FET MOS, amplifier P2, N pole is connected with FET MOS drain electrode, P poles are through electricity
The diode D4 being connected after resistance R8 with process chip U VPOS pins, output end of the negative pole after resistance R11 with amplifier P2
It is connected, the polar capacitor C5 that positive pole is connected after resistance R9 with FET MOS drain electrode, one end and FET MOS
Source electrode be connected, the adjustable resistance R10 that the other end is connected with amplifier P2 output end, negative pole and FET MOS's
The polar capacitor C6 that source electrode is connected, positive pole is connected with amplifier P2 positive pole, positive pole are connected with triode VT1 emitter stage
Connect, the polar capacitor C7 that negative pole is connected after resistance R12 with amplifier P2 negative pole, the output end phase of positive pole and amplifier P2
The polar capacitor C8 of connection, negative pole as the output end of signal transmitting modulate circuit, and the output end of positive pole and amplifier P2
It is connected, the polar capacitor C9 compositions that negative pole is connected with polar capacitor C8 negative pole；The negative pole ground connection of the polar capacitor C7；
The grid of the FET MOS is connected with amplifier P3 output end；The negative pole and FET of the polar capacitor C8
MOS101 drain electrode is connected.
A kind of 6. light-operated LED according to claim 5 signal frequency split anti-interference processing system, it is characterised in that institute
It is AD603 integrated chips to state process chip U.
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| CN201711091961.8A CN107743328A (en) | 2017-11-08 | 2017-11-08 | A kind of light-operated LED signal frequency split anti-interference processing system |
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