CN107667912A - Constant current mode automatic water supplementation control system based on signal peak clipping processing - Google Patents
Constant current mode automatic water supplementation control system based on signal peak clipping processing Download PDFInfo
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- CN107667912A CN107667912A CN201711034213.6A CN201711034213A CN107667912A CN 107667912 A CN107667912 A CN 107667912A CN 201711034213 A CN201711034213 A CN 201711034213A CN 107667912 A CN107667912 A CN 107667912A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 230000009469 supplementation Effects 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 44
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 38
- 230000005611 electricity Effects 0.000 claims description 11
- 241001274660 Modulus Species 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 25
- 244000144977 poultry Species 0.000 abstract description 11
- 239000003651 drinking water Substances 0.000 abstract description 7
- 235000020188 drinking water Nutrition 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K39/00—Feeding or drinking appliances for poultry or other birds
- A01K39/02—Drinking appliances
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Birds (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Feeding And Watering For Cattle Raising And Animal Husbandry (AREA)
Abstract
The invention discloses a kind of constant current mode automatic water supplementation control system based on signal peak clipping 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 constant current mode based on signal peak clipping 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 constant current mode based on signal peak clipping processing is mended automatically
Water control system.
The purpose of the present invention is achieved through the following technical solutions：Constant current mode based on signal peak clipping 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 connected by amplifier P1, amplifier P2, amplifier P3, positive pole with amplifier P1 positive pole
Connect, the electric capacity C5 that negative pole is connected with amplifier P1 output end, be serially connected in the output of amplifier P1 positive pole and amplifier P2
Resistance R7 between end, one end is connected with amplifier P1 negative pole, the resistance R6 of other end ground connection, is serially connected in amplifier P1's
Resistance R8, P pole between output end and amplifier P2 positive pole is connected with amplifier P2 output end, N poles and amplifier P2
The diode D3 that is connected of positive pole, positive pole is connected with amplifier P2 output end, negative pole and amplifier P3 output end phase
The electric capacity C6 of connection, one end is connected with amplifier P3 negative pole, the resistance R9 of other end ground connection, the positive pole phase with amplifier P3
The frontend amplifying circuit of connection, the resistance R10 being serially connected between frontend amplifying circuit and amplifier P2 negative pole, with amplifier P3
The high-pass filtering circuit that is connected of output end, the constant-current source circuit being connected with amplifier P2 output end, and respectively with
The freq converting circuit composition that constant-current source circuit is connected with high-pass filtering circuit；The output end and amplifier of the amplifier P1
P3 positive pole is connected；Output termination+12V the voltages of the amplifier P2；The output end and monolithic of the freq converting circuit
Machine is connected, 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 constant-current source circuit is connected by triode VT1, amplifier P5, amplifier P6, one end with amplifier P5 negative pole
Connect, the resistance R18 of other end ground connection, negative pole is connected with amplifier P5 positive pole, positive pole is connected with amplifier P2 output end
The electric capacity C16 connect, the electric capacity C17 that positive pole is connected with amplifier P5 negative pole, negative pole is connected with amplifier P5 output end,
Resistance R19, the N pole being in parallel with electric capacity C17 is connected with amplifier P5 positive pole, P poles are connected with amplifier P6 output end
The diode D5 connect, one end is connected with amplifier P5 output end, base stage of the other end after resistance R23 with triode VT1
The resistance R20 being connected, the resistance R21 being serially connected between amplifier P5 output end and triode VT1 colelctor electrode, is serially connected in
Resistance R22 between triode VT1 base stage and emitter stage, and P poles are connected with triode VT1 emitter stage, N poles with frequency
The diode D6 compositions that rate change-over circuit is connected；The grounded emitter of the triode VT1；The positive pole of the amplifier P6 with
Diode D5 P poles are connected, output end of its negative pole then with amplifier P5 is connected.
Further, the high-pass filtering circuit is connected by triode VT, amplifier P4, negative pole with amplifier P4 negative pole
Connect, the electric capacity C12 that positive pole is connected with amplifier P3 output end, negative pole is connected with triode VT base stage, positive pole is through electricity
The electric capacity C13 being connected after resistance R15 with amplifier P4 negative pole, one end is connected with triode VT emitter stage, another termination
The resistance R17 on ground, the electric capacity that positive pole is connected with amplifier P4 output end, negative pole is connected with triode VT colelctor electrode
The diode D4 that C14, P pole ground connection, N poles are connected after potentiometer R16 with amplifier P4 output end, and positive pole and amplification
The electric capacity C15 compositions that device P4 output end is connected, negative pole is connected with freq converting circuit；The positive pole of the amplifier P4 is same
Enter and be connected with the control terminal of diode D4 N poles and potentiometer R16.
The frontend amplifying circuit is serially connected in diode D1 N poles and process chip U1 by process chip U1, diode D1
- IN pins between resistance R1, one end is connected with process chip U1+IN pins, the other end and diode D1 P are extremely common
Same resistance R2, the P poles ground connection for forming input and being connected with level sensor, N poles are after resistance R4 with process chip U1's
The diode D2 that REF pins are connected, positive pole is connected with process chip U1+IN pins, negative pole and diode D2 P poles phase
The electric capacity C2 of connection, one end is connected with process chip U1-VS pins, the other end is negative with amplifier P2 after resistance R10
The resistance R3 that pole is connected, positive pole is connected with process chip U1 RG2 pins, negative pole is connected with diode D2 P poles
Electric capacity C4, negative pole is connected with process chip U1 RG1 pins, positive pole is connected after potentiometer R5 with electric capacity C4 negative pole
Electric capacity C1, and positive pole is connected with process chip U1+VS pins, the electric capacity C3 compositions of negative pole ground connection；The process chip
U1+VS pins connect+12V voltages, its OUT pin is connected with amplifier P3 positive pole；The company of the resistance R3 and resistance R10
Contact is grounded；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 D6 N 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 constant-current source circuit of the present invention.
Fig. 5 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, with amplifier
The constant-current source circuit that P2 output end is connected, and the frequency being connected respectively with constant-current source circuit and high-pass filtering circuit turn
Change circuit composition.The output end of the amplifier P1 is connected with amplifier P3 positive pole.The output termination of the amplifier P2+
12V voltages.The output end of the freq converting circuit is connected with peak-clipping circuit, the input of the frontend amplifying circuit then with
Level sensor is connected.
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, and constant-current source circuit
Constant electric current can be then provided for freq converting circuit, so that freq converting circuit work is more stable；Because electric signal
After amplitude limit and filtering process, so the frequency signal after freq converting circuit conversion is more stable, so that monolithic function
It is enough that preferably detection signal is identified, compared, the opening and closing of magnetic valve are preferably controlled, so as to more accurately
The water in pond is fed in control, to meet the drinking-water demand of poultry.Amplifier P1 uses LM118 high speed and precision operational amplifiers,
Amplifier P2 and amplifier P3 then uses LM119 type amplifiers, and resistance R6 and resistance R7 resistance is 20K Ω, and resistance R8~
R10 resistance is that 15K Ω, electric capacity C5 and electric capacity C6 capacitance are 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 constant-current source circuit and process chip U2 VS pins.Electric capacity C7 negative pole with
Conversion chip U2 VS pins are connected, plus earth.Electric capacity C9 positive pole is connected with conversion chip U2 VS pins, negative pole
Ground connection.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 be connected with conversion chip U2 FREQ pins, negative pole is grounded after resistance R14.Electric capacity C10 positive pole and conversion core
Piece 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 with
Electric capacity C7 negative pole is connected, and its negative pole of THRES pins then with electric capacity C11 is connected, and its IN pin is then electric with high-pass filtering
Road 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。
In order that freq converting circuit work is more stable, as shown in figure 4, the constant-current source circuit is by triode VT1, amplifier
P5, amplifier P6, resistance R18, resistance R19, resistance R20, resistance R21, resistance R22, resistance R23, diode D5, diode
D6, electric capacity C16 and electric capacity C17 are formed.
During connection, resistance R18 one end is connected with amplifier P5 negative pole, other end ground connection.Electric capacity C16 negative pole with
Amplifier P5 positive pole is connected, and positive pole is connected with amplifier P2 output end.Electric capacity C17 positive pole is negative with amplifier P5's
Pole is connected, and negative pole is connected with amplifier P5 output end.Resistance R19 is in parallel with electric capacity C17.Diode D5 N poles with
Amplifier P5 positive pole is connected, and P poles are connected with amplifier P6 output end.Resistance R20 one end is defeated with amplifier P5's
Go out end to be connected, base stage of the other end with triode VT1 after resistance R23 is connected.Resistance R21 is serially connected in the defeated of amplifier P5
Go out between end and triode VT1 colelctor electrode.Resistance R22 is serially connected between triode VT1 base stage and emitter stage.Diode D6
P poles be connected with triode VT1 emitter stage, N poles are connected after resistance R12 with conversion chip U2 VS pins.It is described
Triode VT1 grounded emitter.The positive pole of the amplifier P6 is connected with diode D5 P poles, its negative pole then with amplification
Device P5 output end is connected.
Wherein, amplifier P5, resistance R19 and electric capacity C17 form a buffer, and the buffer plays the other electricity of protection
The effect of sub- component.Amplifier P6 and diode D5 then form regenerative feedback loop, and it can reduce current error, so that
The electric current of amplifier P5 outputs is more constant.The electric current of amplifier P5 outputs is supplied to frequency after triode VT1 and diode D6
Rate change-over circuit, due to possessing constant operating current, freq converting circuit work is more stable, so as to preferably by telecommunications
Number be converted to frequency signal.Amplifier P5 and amplifier P6 model are LF353N, and triode VT1 uses 3DG12C types three
Pole pipe, diode D5 and diode D6 use 1N4001 type diodes, and resistance R18~R23 resistance is 10K Ω, electric capacity
C16 capacitance is 1 μ F, and electric capacity C17 capacitance is then 0.1 μ F.
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 5, 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 (5)
1. the constant current mode automatic water supplementation control system based on signal peak clipping 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 connected with amplifier P1 positive pole, born by amplifier P1, amplifier P2, amplifier P3, positive pole
The electric capacity C5 that pole is connected with amplifier P1 output end, it is serially connected between amplifier P1 positive pole and amplifier P2 output end
Resistance R7, one end is connected with amplifier P1 negative pole, the resistance R6 of other end ground connection, is serially connected in amplifier P1 output end
Resistance R8, P pole between amplifier P2 positive pole is connected with amplifier P2 output end, N poles and amplifier P2 positive pole
The diode D3 being connected, positive pole is connected with amplifier P2 output end, negative pole is connected with amplifier P3 output end
Electric capacity C6, one end is connected with amplifier P3 negative pole, the resistance R9 of other end ground connection, is connected with amplifier P3 positive pole
Frontend amplifying circuit, the resistance R10 being serially connected between frontend amplifying circuit and amplifier P2 negative pole, the output with amplifier P3
Hold the high-pass filtering circuit that is connected, the constant-current source circuit being connected with amplifier P2 output end, and respectively with constant-current source
The freq converting circuit composition that circuit is connected with high-pass filtering circuit；The output end and amplifier P3 of the amplifier P1 is just
Pole is connected；Output termination+12V the voltages of the amplifier P2；The output end of the freq converting circuit is connected with single-chip microcomputer
Connect, 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, 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 constant-current source circuit is connected, separately by triode VT1, amplifier P5, amplifier P6, one end with amplifier P5 negative pole
The resistance R18 of one end ground connection, the electricity that negative pole is connected with amplifier P5 positive pole, positive pole is connected with amplifier P2 output end
Hold C16, the electric capacity C17 that positive pole is connected with amplifier P5 negative pole, negative pole is connected with amplifier P5 output end, with electric capacity
Resistance R19, the N pole that C17 is in parallel is connected with amplifier P5 positive pole, two that P poles are connected with amplifier P6 output end
Pole pipe D5, one end is connected with amplifier P5 output end, base stage of the other end with triode VT1 after resistance R23 is connected
Resistance R20, the resistance R21 being serially connected between amplifier P5 output end and triode VT1 colelctor electrode, be serially connected in triode
Resistance R22 between VT1 base stage and emitter stage, and P poles are connected with triode VT1 emitter stage, N poles and frequency conversion
The diode D6 compositions that circuit is connected；The grounded emitter of the triode VT1；The positive pole and diode of the amplifier P6
D5 P poles are connected, output end of its negative pole then with amplifier P5 is connected.
2. the constant current mode automatic water supplementation control system according to claim 1 based on signal peak clipping processing, it is characterised in that
The high-pass filtering circuit is by triode VT, amplifier P4, and negative pole is connected with amplifier P4 negative pole, positive pole and amplifier P3
The electric capacity C12 that is connected of output end, negative pole is connected with triode VT base stage, positive pole after resistance R15 with amplifier P4
The electric capacity C13 that is connected of negative pole, one end is connected with triode VT emitter stage, the resistance R17 of other end ground connection, positive pole with
Electric capacity C14, the P poles that amplifier P4 output end is connected, negative pole is connected with triode VT colelctor electrode are grounded, N poles are through electricity
The diode D4 being connected after the device R16 of position with amplifier P4 output end, and positive pole be connected with amplifier P4 output end,
The electric capacity C15 compositions that negative pole is connected with freq converting circuit；The positive pole of the amplifier P4 with enter with diode D4 N poles and
Potentiometer R16 control terminal is connected.
3. the constant current mode automatic water supplementation control system according to claim 2 based on signal peak clipping 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.
4. the constant current mode automatic water supplementation control system according to claim 3 based on signal peak clipping processing, it is characterised in that
The freq converting circuit is by conversion chip U2, the electricity being serially connected between diode D6 N 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.
5. the constant current mode automatic water supplementation control system according to claim 4 based on signal peak clipping processing, it is characterised in that
The process chip U1 is AD620 integrated chips, and the conversion chip U2 is LM331 integrated chips.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711034213.6A CN107667912A (en) | 2017-10-30 | 2017-10-30 | Constant current mode automatic water supplementation control system based on signal peak clipping processing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711034213.6A CN107667912A (en) | 2017-10-30 | 2017-10-30 | Constant current mode automatic water supplementation control system based on signal peak clipping processing |
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| CN107667912A true CN107667912A (en) | 2018-02-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109792961A (en) * | 2019-01-23 | 2019-05-24 | 深圳市智信农联科技有限公司 | A kind of channel devices and monitoring method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109792961A (en) * | 2019-01-23 | 2019-05-24 | 深圳市智信农联科技有限公司 | A kind of channel devices and monitoring method |
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Application publication date: 20180209 |