CN107643772A - Low interference automatic water supplementation control system based on signal peak processing - Google Patents
Low interference automatic water supplementation control system based on signal peak processing Download PDFInfo
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Abstract
The invention discloses a kind of low interference automatic water supplementation control system based on signal peak processing, it is characterized in that, mainly by single-chip microcomputer, the magnetic valve and peak-clipping circuit being connected respectively with single-chip microcomputer, the V/F modular converters being connected with peak-clipping circuit, and the level sensor composition being connected with V/F modular converters.V/F modular converters in the present invention can carry out amplitude limit and filtering process while being changed to detection signal to the waveform of detection signal, improve the stability of detection signal, so that single-chip microcomputer can preferably be identified to detection signal, compare, the preferably opening and closing of control magnetic valve, so as to more accurately control the water for feeding pond, to meet the drinking-water demand of poultry.
Description
Technical field
The present invention relates to automation field, in particular to a kind of low interference based on signal peak processing to be automatically replenished control
System processed.
Background technology
During home poultry raising, poultry raiser must feed water to poultry daily, and traditional method is by manually to family
Fowl feeds water, but with the continuous expansion of raising scale, then needs to spend substantial amounts of cost of labor using traditional water method of feeding.For
Solve the above problems, occurred automatic water-feeding device on the market at present, automatic water-feeding device is using level sensor to feeding
Water in pond is monitored, and when water is very few then by control system automatic controlled water replanishing, and controls the water fed in pond
Amount.Poultry is carried out using automatic water-feeding device to feed water, can effectively replace manually feeding water, saved it is substantial amounts of manually into
This.But the automatic water-feeding device used at present still has the defects of very big, i.e. the control accuracy of its control system is not high, its
Effectively the water for feeding pond can not be controlled, it is impossible to meet the drinking-water demand of poultry.
The content of the invention
The control accuracy of control system is not high used by it is an object of the invention to overcome current automatic water-feeding device,
The defects of effectively can not being controlled to the water for feeding pond, there is provided a kind of low interference based on signal peak processing is mended automatically
Water control system.
The purpose of the present invention is achieved through the following technical solutions：Low interference based on signal peak processing is automatically replenished control
System, mainly by single-chip microcomputer, the magnetic valve and peak-clipping circuit being connected respectively with single-chip microcomputer, the V/F being connected with peak-clipping circuit
Modular converter, and the level sensor composition being connected with V/F modular converters；The V/F modular converters are put by amplifier P1
Big device P2, amplifier P3, the electric capacity that positive pole is connected with amplifier P1 positive pole, negative pole is connected with amplifier P1 output end
C5, the resistance R7 being serially connected between amplifier P1 positive pole and amplifier P2 output end, one end and amplifier P1 negative pole phase
Connection, the resistance R6, the resistance R8, P being serially connected between amplifier P1 output end and amplifier P2 positive pole of other end ground connection
The diode D3 that pole is connected with amplifier P2 output end, N poles are connected with amplifier P2 positive pole, positive pole and amplifier P2
Output end be connected, the electric capacity C6 that negative pole is connected with amplifier P3 output end, one end is connected with amplifier P3 negative pole
Connect, the resistance R9 of other end ground connection, the frontend amplifying circuit being connected with amplifier P3 positive pole, be serially connected in frontend amplifying circuit
Resistance R10 between amplifier P2 negative pole, the high-pass filtering circuit being connected with amplifier P3 output end, and respectively
The freq converting circuit composition being connected with amplifier P2 output end and high-pass filtering circuit；The output end of the amplifier P1
It is connected with amplifier P3 positive pole；Output termination+12V the voltages of the amplifier P2；The output of the freq converting circuit
End is connected with single-chip microcomputer, and the input of the frontend amplifying circuit is then connected with level sensor.
The peak-clipping circuit includes triode VT101, and positive pole is connected with triode VT101 emitter stage, negative pole ground connection
Electric capacity C105, the resistance R103 being in parallel with electric capacity C105, base stage of the negative pole with triode VT101 after resistance R102 be connected
Connect, the electric capacity C101 that positive pole is connected after resistance R101 with V/F modular converters, positive pole is connected with electric capacity C101 positive pole,
The electric capacity C102 that negative pole is connected with electric capacity C101 negative pole, positive pole is connected with triode VT101 base stage, negative pole is grounded
The diode D101 that electric capacity C103, N pole is connected with electric capacity C103 negative pole, P poles are connected with electric capacity C101 negative pole, positive pole
It is connected with electric capacity C101 positive pole, the electric capacity C104 that negative pole is connected with triode VT101 colelctor electrode, with electric capacity C104 phases
Inductance L101 in parallel；The emitter stage of the triode VT101 is connected with single-chip microcomputer.
The high-pass filtering circuit by triode VT, amplifier P4, negative pole is connected with amplifier P4 negative pole, positive pole with
The electric capacity C12 that amplifier P3 output end is connected, negative pole is connected with triode VT base stage, positive pole after resistance R15 with
The electric capacity C13 that amplifier P4 negative pole is connected, one end is connected with triode VT emitter stage, the resistance of other end ground connection
R17, electric capacity C14, the P poles that positive pole is connected with amplifier P4 output end, negative pole is connected with triode VT colelctor electrode connect
The diode D4 that ground, N poles are connected after potentiometer R16 with amplifier P4 output end, and positive pole and amplifier P4's are defeated
Go out the electric capacity C15 compositions that end is connected, negative pole is connected with freq converting circuit；The positive pole of the amplifier P4 enters together and two poles
Pipe D4 N poles are connected with potentiometer R16 control terminal.
Further, the frontend amplifying circuit is by process chip U1, diode D1, be serially connected in diode D1 N poles and
Resistance R1 between process chip U1-IN pins, one end is connected with process chip U1+IN pins, the other end and two poles
Resistance R2, P poles that pipe D1 P poles are collectively forming input and are connected with level sensor ground connection, N poles after resistance R4 with place
The diode D2 that reason chip U1 REF pins are connected, positive pole is connected with process chip U1+IN pins, negative pole and two poles
The electric capacity C2 that pipe D2 P poles are connected, one end is connected with process chip U1-VS pins, the other end after resistance R10 with putting
The resistance R3 that big device P2 negative pole is connected, positive pole is connected with process chip U1 RG2 pins, negative pole and diode D2 P
The electric capacity C4 that pole is connected, negative pole is connected with process chip U1 RG1 pins, positive pole is negative with electric capacity C4 after potentiometer R5
The electric capacity C1 that pole is connected, and positive pole is connected with process chip U1+VS pins, the electric capacity C3 compositions of negative pole ground connection；Institute
+ VS the pins for stating process chip U1 connect+12V voltages, its OUT pin is connected with amplifier P3 positive pole；The resistance R3 and
Resistance R10 tie point ground connection；Control terminal of the negative pole of the electric capacity C4 also with potentiometer R5 is connected.
The freq converting circuit is serially connected in diode D3 P poles and process chip U2 VS pins by conversion chip U2
Between resistance R12, negative pole is connected with conversion chip U2 VS pins, the electric capacity C7 of plus earth, positive pole and conversion chip
U2 VS pins are connected, the electric capacity C9 of negative pole ground connection, be grounded while negative pole is connected with conversion chip U2 GND pins,
The electric capacity C8 that positive pole is connected after resistance R11 with conversion chip U2 REF pins, it is serially connected in conversion chip U2 OUT pins
Resistance R13 between FREQ pins, positive pole is connected with conversion chip U2 FREQ pins, negative pole is grounded after resistance R14
Electric capacity C11, and positive pole is connected with conversion chip U2 OUT pins, negative pole as output end and after resistance R101 with
The electric capacity C10 compositions that electric capacity C101 positive pole is connected；The RC pins of the conversion chip U2 are connected with electric capacity C7 negative pole,
Its THRES pin is then connected with electric capacity C11 negative pole, its negative pole of IN pins then with electric capacity C15 is connected.
The process chip U1 is AD620 integrated chips, and the conversion chip U2 is LM331 integrated chips.
The present invention compared with the prior art, has advantages below and beneficial effect：
(1) V/F modular converters of the invention can also be to the ripple of detection signal while being changed to detection signal
Shape carries out amplitude limit, the stability of detection signal is improved, so that single-chip microcomputer can preferably be identified to detection signal, compare
It is right, the opening and closing of magnetic valve are preferably controlled, so as to more accurately control the water for feeding pond, to meet poultry
Drinking-water demand.
(2) V/F modular converters of the invention can be filtered the interference in detection signal, the shadow to exclude the interference signal
Ring, single-chip microcomputer is preferably identified, is compared to detection signal, preferably control the opening and closing of magnetic valve, from
And the water for feeding pond can be more accurately controlled, to meet the drinking-water demand of poultry.
(3) peak-clipping circuit of the invention can suppress to the crest of detection signal, avoid the peak value of signal excessive, carry
The stability of high RST.
Brief description of the drawings
Fig. 1 is the overall structure figure of the present invention.
Fig. 2 is the structure chart of the V/F modular converters of the present invention.
Fig. 3 is the structure chart of the high-pass filtering circuit of the present invention.
Fig. 4 is the structure chart of the peak-clipping circuit of the present invention.
Embodiment
The present invention is described in further detail with reference to embodiment, but embodiments of the present invention are not limited to
This.
Embodiment
As shown in figure 1, the present invention is mainly by single-chip microcomputer, magnetic valve, peak-clipping circuit, V/F modular converters and level sensor
Device forms.Wherein, the signal output interface of the level sensor is connected with the input of V/F modular converters, and it is used to detect
Feed the water level in pond and export corresponding electric signal and give V/F modular converters, it, which need to be arranged at, feeds inside pond；The level sensor
Device uses AL200W type pressure resistance type level sensors, and the AL200W type pressure resistance type level sensors will be directly proportional to liquid level depth
Fluid pressure accurate measurement comes out, and is converted into standard electric signal output, it is established that output signal and liquid depth it is linear right
It should be related to, so as to measure level sensor end to the liquid level of liquid level, draw the water fed in pond.The V/F
Modular converter is used to be handled the electric signal of level sensor output, and is converted to frequency signal and exports to peak-clipping circuit,
The peak-clipping circuit is transferred to single-chip microcomputer after then handling the crest of signal.
Control centre of the single-chip microcomputer as the present invention, it is internally provided with setting value, i.e. the inside of the single-chip microcomputer is set
Have and feed required water value in pond, after detection signal is input to single-chip microcomputer, single-chip microcomputer by detection signal be identified and with
Internal setting value is compared, and exports corresponding control signal to magnetic valve, and control magnetic valve opens or closes, so as to give
Water replenishment is fed, realizes the control to feeding pond water；The single-chip microcomputer realized using AT89S51 types single-chip microcomputer, the AT89S51
The P1.0I/O interfaces of single-chip microcomputer are connected with the output end of peak-clipping circuit, its P2.1I/O interface then control terminal phase with magnetic valve
Connection.The magnetic valve is arranged on the filling pipe for feeding pond.
In order to preferably be handled electric signal and be changed, as shown in Fig. 2 the V/F modular converters are put by amplifier P1
Big device P2, amplifier P3, the electric capacity that positive pole is connected with amplifier P1 positive pole, negative pole is connected with amplifier P1 output end
C5, the resistance R7 being serially connected between amplifier P1 positive pole and amplifier P2 output end, one end and amplifier P1 negative pole phase
Connection, the resistance R6, the resistance R8, P being serially connected between amplifier P1 output end and amplifier P2 positive pole of other end ground connection
The diode D3 that pole is connected with amplifier P2 output end, N poles are connected with amplifier P2 positive pole, positive pole and amplifier P2
Output end be connected, the electric capacity C6 that negative pole is connected with amplifier P3 output end, one end is connected with amplifier P3 negative pole
Connect, the resistance R9 of other end ground connection, the frontend amplifying circuit being connected with amplifier P3 positive pole, be serially connected in frontend amplifying circuit
Resistance R10 between amplifier P2 negative pole, the high-pass filtering circuit being connected with amplifier P3 output end, and respectively
The freq converting circuit composition being connected with amplifier P2 output end and high-pass filtering circuit.The output end of the amplifier P1
It is connected with amplifier P3 positive pole.Output termination+12V the voltages of the amplifier P2.The output of the freq converting circuit
End is connected with peak-clipping circuit, and the input of the frontend amplifying circuit is then connected with level sensor.
The electric signal that level sensor exports can be amplified processing by the frontend amplifying circuit.And amplifier P1, electricity
Resistance R6 and electric capacity C5 collectively constitutes an integrating circuit, and the integrating circuit can be carried out the offset voltage of frontend amplifying circuit
Eliminate；The amplifier P2, amplifier P3, electric capacity C6 and resistance R9 then form an amplitude limiter circuit, and the amplitude limiter circuit can be cut
Go the interference with lower curtate at the top of electric signal waveform；It is such then can be very good the waveform of detection signal carrying out amplitude limit, improve inspection
Survey the stability of signal.The high-pass filtering circuit can filter to the interference signal in detection signal, improve detection signal
Cleannes.The freq converting circuit can convert electrical signals to frequency signal and export to peak-clipping circuit, because electric signal passes through
After crossing amplitude limit and filtering process, so the frequency signal after freq converting circuit conversion is more stable, so that single-chip microcomputer can
Preferably detection signal is identified, compared, the opening and closing of magnetic valve are preferably controlled, so as to more accurately control
System feeds the water in pond, to meet the drinking-water demand of poultry.Amplifier P1 uses LM118 high speed and precision operational amplifiers, puts
Big device P2 and amplifier P3 then uses LM119 type amplifiers, and resistance R6 and resistance R7 resistance are 20K Ω, resistance R8~R10
Resistance be that 15K Ω, electric capacity C5 and electric capacity C6 capacitance is 0.02 μ F, diode D3 model 1N914.
The frontend amplifying circuit is by process chip U1, diode D1, resistance R1, resistance R2, resistance R3, resistance R4, current potential
Device R5, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4 and diode D2 are formed.
During connection, resistance R1 is serially connected between diode D1 N poles and process chip U1-IN pins.The one of resistance R2
End is connected with process chip U1+IN pins, and the other end and diode D1 P poles are collectively forming input and and level sensor
The signal output interface of device is connected.Diode D2 P poles ground connection, REF pin phase of the N poles after resistance R4 with process chip U1
Connection.Electric capacity C2 positive pole is connected with process chip U1+IN pins, and negative pole is connected with diode D2 P poles.Resistance R3
One end be connected with process chip U1-VS pins, negative pole of the other end with amplifier P2 after resistance R10 is connected.Electricity
The positive pole for holding C4 is connected with process chip U1 RG2 pins, and negative pole is connected with diode D2 P poles.Electric capacity C1 negative pole
It is connected with process chip U1 RG1 pins, negative pole of the positive pole with electric capacity C4 after potentiometer R5 is connected.Electric capacity C3 positive pole
It is connected with process chip U1+VS pins, negative pole ground connection.+ VS the pins of the process chip U1 connect+12V voltages, its OUT
Pin is connected with amplifier P3 positive pole.The tie point ground connection of the resistance R3 and resistance R10.The negative pole of the electric capacity C4 is also
It is connected with potentiometer R5 control terminal.
The electric signal output of level sensor output is amplified to after process chip U1 by process chip U1 to electric signal
Processing, regulation potentiometer R5 resistance can then adjust the multiplication factor of electric signal.Process chip U1 integrates core using AD620
Piece, potentiometer R5 maximum value are that 1K Ω, resistance R1 and resistance R2 resistance are 12K Ω, resistance R3 and resistance R4 resistance
The capacitance that value is 18K Ω, electric capacity C1 and electric capacity C2 is that 1000PF, electric capacity C3 and electric capacity C4 appearance resistance are 0.1 μ F, and two
Pole pipe D1 and diode D2 model are 1N914.
In addition, the freq converting circuit is by conversion chip U2, resistance R11, resistance R12, resistance R13, resistance R14, electric capacity
C7, electric capacity C8, electric capacity C9, electric capacity C10 and electric capacity C11 are formed.
During connection, resistance R12 is serially connected between diode D3 P poles and process chip U2 VS pins.Electric capacity C7's is negative
Pole is connected with conversion chip U2 VS pins, plus earth.Electric capacity C9 positive pole is connected with conversion chip U2 VS pins,
Negative pole is grounded.Electric capacity C8 negative pole is grounded while being connected with conversion chip U2 GND pins, positive pole after resistance R11 with
Conversion chip U2 REF pins are connected.Resistance R13 is serially connected between conversion chip U2 OUT pins and FREQ pins.Electric capacity
C11 positive pole is connected with conversion chip U2 FREQ pins, and negative pole is grounded after resistance R14.Electric capacity C10 positive pole and conversion
Chip U2 OUT pins are connected, and negative pole is connected as output end and with peak-clipping circuit.The RC pins of the conversion chip U2
Be connected with electric capacity C7 negative pole, its negative pole of THRES pins then with electric capacity C11 is connected, its IN pin then with high-pass filtering
Circuit is connected.
The electric signal output of amplifier P3 outputs is converted electrical signals to accordingly to conversion chip U2 by conversion chip U2
Frequency signal export to peak-clipping circuit.Conversion chip U2 is LM331 integrated chips, and electric capacity C9 capacitance is 0.1 μ F, electric capacity
C8, electric capacity C10 and electric capacity C11 capacitance are 0.01 μ F, and resistance R12 resistance is 20K Ω, and resistance R11 is 18K Ω's
High-accuracy resistance, resistance R14 are 100K Ω high-accuracy resistance, and resistance R13 resistance is 2.7K Ω, and electric capacity C7 capacitance is
1000PF。
The high-pass filtering circuit can be filtered the interference signal in detection signal, and its structure is as shown in figure 3, by three
Pole pipe VT, amplifier P4, resistance R5, potentiometer R16, resistance R17, diode D4, electric capacity C12, electric capacity C13, electric capacity C14 and
Electric capacity C15 is formed.
During connection, electric capacity C12 negative pole is connected with amplifier P4 negative pole, and positive pole is connected with amplifier P3 output end
Connect.Electric capacity C13 negative pole is connected with triode VT base stage, and negative pole of the positive pole with amplifier P4 after resistance R15 is connected.
Resistance R17 one end is connected with triode VT emitter stage, other end ground connection.Electric capacity C14 positive pole is defeated with amplifier P4's
Go out end to be connected, negative pole is connected with triode VT colelctor electrode.Diode D4 P poles ground connection, N poles after potentiometer R16 with
Amplifier P4 output end is connected.Electric capacity C15 positive pole is connected with amplifier P4 output end, negative pole and frequency conversion electricity
Road is connected.The positive pole of the amplifier P4 is same to be entered with diode D4 N poles and potentiometer R16 control terminal to be connected.
Amplifier P4, triode VT, electric capacity C13, electric capacity C14, potentiometer R16 and resistance R15 collectively constitute a height
Bandpass filter；The detection signal of amplifier P3 outputs inputs to the high-pass filter after electric capacity C12, will be examined by high-pass filter
The interference signal surveyed in signal is filtered, the influence to exclude the interference signal, makes the essence of the frequency signal after change-over circuit conversion
Du Genggao so that single-chip microcomputer can preferably be identified to detection signal, compare, preferably control magnetic valve opening and
Close, so as to more accurately control the water for feeding pond, to meet the drinking-water demand of poultry.By adjusting potentiometer R16
The frequency filtering of high-pass filter can then be changed.Amplifier P4 model LM119, triode VT model
3DG12C, diode D4 model 1N4001, electric capacity C12 and electric capacity C15 capacitance are 0.1 μ F, electric capacity C13 and electric capacity
The resistance that C14 capacitance is 1 μ F, resistance R15 and resistance R17 is 33K Ω, and potentiometer R16 maximum value is then 15.8K
Ω。
The V/F modular converters waveform of detection signal can be carried out while being changed to detection signal amplitude limit and
Filtering process, the stability of detection signal is improved, so that single-chip microcomputer can preferably be identified to detection signal, compare,
The preferably opening and closing of control magnetic valve, so as to more accurately control the water for feeding pond, to meet the drink of poultry
Water demand.
As shown in figure 4, the peak-clipping circuit includes triode VT101, positive pole is connected with triode VT101 emitter stage
Connect, negative pole ground connection electric capacity C105, the resistance R103 being in parallel with electric capacity C105, negative pole after resistance R102 with triode
The electric capacity C101 that VT101 base stage is connected, positive pole is connected after resistance R101 with electric capacity C10 negative pole, positive pole and electric capacity
The electric capacity C102 that C101 positive pole is connected, negative pole is connected with electric capacity C101 negative pole, the base stage of positive pole and triode VT101
It is connected, electric capacity C103, the N pole of negative pole ground connection is connected with electric capacity C103 negative pole, P poles are connected with electric capacity C101 negative pole
Diode D101, the electric capacity that positive pole is connected with electric capacity C101 positive pole, negative pole is connected with triode VT101 colelctor electrode
C104, the inductance L101 being in parallel with electric capacity C104；The emitter stage of the triode VT101 and the P1.0I/O interfaces of single-chip microcomputer
It is connected.
Signal is come in through resistance R101 outputs, turn-on transistor VT101, in the process, diode D101 and electric capacity
C103 is suppressed the crest of signal, avoids the peak value of signal excessive.Electric capacity C105 and resistance R103 then form RC filtered electricals
Road, it is further filtered to interference signal.The emitter stage of signal from triode VT101 after processing are input to single-chip microcomputer
In.In the present embodiment, triode VT101 model 3DU511D, resistance R101 resistance are 3K Ω, electric capacity C101 and
Electric capacity C102 capacitance is 10 μ F, and inductance L101 sensibility reciprocal is 0.5H, and electric capacity C104 capacitance is 5 μ F, resistance R102 resistance
It is worth for 56K Ω, electric capacity C103 capacitance is 47 μ F, and diode D101 model 1N914, resistance R103 resistance are 560 Ω,
Electric capacity C105 capacitance is 332 μ F.
During work, the water in pond is fed in level sensor detection, and exports corresponding electric signal to peak-clipping circuit, peak clipping
Circuit exports after handling the peak value of signal gives V/F modular converters, and the V/F modular converters are defeated after handling electric signal
Go out corresponding frequency signal to single-chip microcomputer, single-chip microcomputer is identified to frequency signal and compared with its internal setting value,
When detected value is less than setting value, it exports corresponding control signal to magnetic valve, opens magnetic valve, starts to mend to hello pond
Water；When detected value is more than setting value, single-chip microcomputer then outputs signal to magnetic valve, makes closed electromagnetic valve, so as to stop feeding water
Pond moisturizing；It is such then can be very good to feed pond in water be accurately controlled, to meet the drinking-water demand of domestic animal.
As described above, the present invention can be realized well.
Claims (4)
1. the low interference automatic water supplementation control system based on signal peak processing, it is characterised in that mainly by single-chip microcomputer, respectively with
The magnetic valve and peak-clipping circuit that single-chip microcomputer is connected, the V/F modular converters being connected with peak-clipping circuit, and with V/F moduluss of conversion
The level sensor composition that block is connected；The V/F modular converters are by amplifier P1, and amplifier P2, amplifier P3, positive pole is with putting
Big device P1 positive pole is connected, the electric capacity C5 that negative pole is connected with amplifier P1 output end, is serially connected in amplifier P1 positive pole
Resistance R7 between amplifier P2 output end, one end is connected with amplifier P1 negative pole, the resistance R6 of other end ground connection,
Resistance R8, the P pole being serially connected between amplifier P1 output end and amplifier P2 positive pole is connected with amplifier P2 output end
Connect, the diode D3 that N poles are connected with amplifier P2 positive pole, positive pole is connected with amplifier P2 output end, negative pole is with putting
The electric capacity C6 that big device P3 output end is connected, one end is connected with amplifier P3 negative pole, the resistance R9 of other end ground connection, with
The frontend amplifying circuit that amplifier P3 positive pole is connected, the electricity being serially connected between frontend amplifying circuit and amplifier P2 negative pole
Hinder R10, the high-pass filtering circuit being connected with amplifier P3 output end, and the output end and high pass with amplifier P2 respectively
The freq converting circuit composition that filter circuit is connected；The output end of the amplifier P1 is connected with amplifier P3 positive pole；
Output termination+12V the voltages of the amplifier P2；The output end of the freq converting circuit is connected with single-chip microcomputer, before described
The input of end amplifying circuit is then connected with level sensor；
The peak-clipping circuit includes triode VT101, and positive pole is connected with triode VT101 emitter stage, the electricity of negative pole ground connection
Hold C105, the resistance R103 being in parallel with electric capacity C105, negative pole is connected after resistance R102 with triode VT101 base stage,
The electric capacity C101 that positive pole is connected after resistance R101 with V/F modular converters, positive pole is connected with electric capacity C101 positive pole, negative pole
The electric capacity C102 being connected with electric capacity C101 negative pole, positive pole is connected with triode VT101 base stage, the electric capacity of negative pole ground connection
The diode D101 that C103, N pole are connected with electric capacity C103 negative pole, P poles are connected with electric capacity C101 negative pole, positive pole and electricity
Appearance C101 positive pole is connected, the electric capacity C104 that negative pole is connected with triode VT101 colelctor electrode, is in parallel with electric capacity C104
Inductance L101；The emitter stage of the triode VT101 is connected with single-chip microcomputer；
The high-pass filtering circuit is by triode VT, amplifier P4, and negative pole is connected with amplifier P4 negative pole, positive pole and amplification
The electric capacity C12 that device P3 output end is connected, negative pole is connected with triode VT base stage, positive pole after resistance R15 with amplification
The electric capacity C13 that device P4 negative pole is connected, one end is connected with triode VT emitter stage, the resistance R17 of other end ground connection, just
Electric capacity C14, the P poles that pole is connected with amplifier P4 output end, negative pole is connected with triode VT colelctor electrode are grounded, N poles
The diode D4 being connected after potentiometer R16 with amplifier P4 output end, and the output end phase of positive pole and amplifier P4
The electric capacity C15 compositions that connection, negative pole are connected with freq converting circuit；The positive pole of the amplifier P4 enters with diode D4's together
N poles are connected with potentiometer R16 control terminal.
2. the low interference automatic water supplementation control system according to claim 1 based on signal peak processing, it is characterised in that
The frontend amplifying circuit is serially connected in diode D1 N poles and process chip U1-IN pipes by process chip U1, diode D1
Resistance R1 between pin, one end is connected with process chip U1+IN pins, the other end and diode D1 P poles are collectively forming
Input and resistance R2, the P poles being connected with level sensor are grounded, REF pin of the N poles after resistance R4 with process chip U1
The diode D2 being connected, positive pole is connected with process chip U1+IN pins, negative pole is connected with diode D2 P poles
Electric capacity C2, one end is connected with process chip U1-VS pins, negative pole of the other end with amplifier P2 after resistance R10 is connected
The resistance R3 connect, the electric capacity C4 that positive pole is connected with process chip U1 RG2 pins, negative pole is connected with diode D2 P poles,
The electric capacity C1 that negative pole is connected with process chip U1 RG1 pins, positive pole is connected after potentiometer R5 with electric capacity C4 negative pole,
And positive pole is connected with process chip U1+VS pins, the electric capacity C3 compositions of negative pole ground connection；+ the VS of the process chip U1
Pin connects+12V voltages, its OUT pin is connected with amplifier P3 positive pole；The tie point of the resistance R3 and resistance R10 connect
Ground；Control terminal of the negative pole of the electric capacity C4 also with potentiometer R5 is connected.
3. the low interference automatic water supplementation control system according to claim 2 based on signal peak processing, it is characterised in that
The freq converting circuit is by conversion chip U2, the electricity being serially connected between diode D3 P poles and process chip U2 VS pins
R12 is hindered, negative pole is connected with conversion chip U2 VS pins, the electric capacity C7 of plus earth, and the VS of positive pole and conversion chip U2 is managed
Pin is connected, the electric capacity C9 of negative pole ground connection, and ground connection, positive pole are through electricity while negative pole is connected with conversion chip U2 GND pins
The electric capacity C8 being connected after resistance R11 with conversion chip U2 REF pins, it is serially connected in conversion chip U2 OUT pins and FREQ pipes
Resistance R13 between pin, positive pole is connected with conversion chip U2 FREQ pins, the electric capacity that negative pole is grounded after resistance R14
C11, and positive pole is connected with conversion chip U2 OUT pins, negative pole as output end and after resistance R101 with electric capacity
The electric capacity C10 compositions that C101 positive pole is connected；The RC pins of the conversion chip U2 are connected with electric capacity C7 negative pole, it
THRES pins are then connected with electric capacity C11 negative pole, its negative pole of IN pins then with electric capacity C15 is connected.
4. the low interference automatic water supplementation control system according to claim 3 based on signal peak processing, it is characterised in that
The process chip U1 is AD620 integrated chips, and the conversion chip U2 is LM331 integrated chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711030304.2A CN107643772A (en) | 2017-10-30 | 2017-10-30 | Low interference automatic water supplementation control system based on signal peak processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711030304.2A CN107643772A (en) | 2017-10-30 | 2017-10-30 | Low interference automatic water supplementation control system based on signal peak processing |
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| CN201711030304.2A Pending CN107643772A (en) | 2017-10-30 | 2017-10-30 | Low interference automatic water supplementation control system based on signal peak processing |
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