CN105993859A - Automatic irrigation control system based on signal amplification circuit - Google Patents
Automatic irrigation control system based on signal amplification circuit Download PDFInfo
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- CN105993859A CN105993859A CN201610529361.4A CN201610529361A CN105993859A CN 105993859 A CN105993859 A CN 105993859A CN 201610529361 A CN201610529361 A CN 201610529361A CN 105993859 A CN105993859 A CN 105993859A
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- audion
- pole
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- electric capacity
- chip
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses an automatic irrigation control system based on a signal amplification circuit. The automatic irrigation control system is characterized by mainly consisting of a control chip U3, a diode D2, a detecting probe Q1, a detecting probe Q2, a resistor R2, a resistor R1 and the like, wherein the resistor R2 is connected in series between the detecting probe Q1 and a P pole of the diode D2; the resistor R1 is connected in series between the detecting probe Q1 and a VIN tube pin of the control chip U3. The automatic irrigation control system has the advantages that a current signal output from the control chip can be subjected to amplification processing, so that the control chip well recognizes the signal and outputs an accurate control signal, and the control precision of the control system on a water pump is greatly improved.
Description
Technical field
The present invention relates to automation field, specifically refer to a kind of automatic irrigation control based on signal amplification circuit
System processed.
Background technology
The application of modern agricultural technology brings huge economy, society and ecological benefits for society.Along with
The development of society, the consciousness of people's water saving gradually strengthens, and in order to reach the purpose of water saving, people generally use
Automatic irrigating control system controls water pump and irrigates crops, to improve irrigation water efficiency.But,
Agricultural irrigation at present there is also certain problem, the i.e. control accuracy of its automatic irrigating control system used relatively
Low, it is impossible to control pump working accurately, do not reach the requirement of people.
Summary of the invention
It is an object of the invention to solve the defect that the control accuracy of current automatic irrigating control system is low, it is provided that
A kind of automatic irrigating control system based on signal amplification circuit.
The purpose of the present invention is by following technical proposals reality: a kind of automatic irrigation based on signal amplification circuit
Control system, mainly by control chip U3, diode D2, detection probe Q1, detection probe Q2, concatenation
Resistance R2 between the P pole of detection probe Q1 and diode D2, is serially connected in detection probe Q1 and control
Resistance R1, N pole between the VIN pin of chip U3 is connected with detection probe Q1, P pole with control core
The diode D1 that the TON pin of sheet U3 is connected, positive pole is connected with the BOOT pin of control chip U3
Connect, electric capacity C4 that negative pole is connected with the LX pin of control chip U3, be serially connected in control chip U3's
Resistance R3 between NC pin and GND pin, the letter being connected with the ISEN pin of control chip U3
Number amplifying circuit, the power circuit being connected with the N pole of diode D2, and be serially connected in power circuit and
On-off circuit composition between the LX pin of control chip U3；The GND pin of described control chip U3
Ground connection；Described signal amplification circuit is connected with detection probe Q2.
Further, described signal amplification circuit by field effect transistor MOS, audion VT3, audion VT4,
Negative pole is connected with the grid of field effect transistor MOS, positive pole is as the electric capacity of the input of this signal amplification circuit
C6, the resistance R7 being serially connected between the negative pole of electric capacity C6 and the emitter stage of audion VT4, one end is imitated with field
Should the source electrode of pipe MOS be connected, the other end be connected with the emitter stage of audion VT4 while ground connection
Potentiometer R8, positive pole is connected with the drain electrode of field effect transistor MOS, the base stage phase of negative pole and audion VT3
Connect electric capacity C7, positive pole is connected with the drain electrode of field effect transistor MOS, negative pole after resistance R9 with three poles
The electric capacity C8 that the emitter stage of pipe VT4 is connected, is serially connected in drain electrode and the audion VT3 of field effect transistor MOS
Colelctor electrode between resistance R10, N pole be connected with the emitter stage of audion VT4, P pole and audion
The diode D3 that the emitter stage of VT3 is connected, is serially connected in drain electrode and the audion VT4 of field effect transistor MOS
Colelctor electrode between resistance R11, positive pole is connected with the colelctor electrode of audion VT4, negative pole is as this letter
The electric capacity C9 of the outfan of number amplifying circuit, negative pole is connected with the control end of potentiometer R8, positive pole is through electricity
The electric capacity C11 that is connected with the negative pole of electric capacity C9 after resistance R12, and the base stage of positive pole and audion VT4
Be connected, electric capacity C10 that negative pole is connected with the positive pole of electric capacity C11 composition；The base of described audion VT3
Pole is connected with the negative pole of electric capacity C8；The input of described signal amplification circuit is connected with detection probe Q2,
Its outfan is then connected with the ISEN pin of control chip U3.
Described power circuit by transformator T, diode rectifier U, voltage stabilizing chip U1, voltage stabilizing chip U2,
Positive pole is connected with the IN pin of voltage stabilizing chip U1, the cathode output end phase of negative pole and diode rectifier U
The electric capacity C1 connected, positive pole is connected with the OUT pin of voltage stabilizing chip U1, the electric capacity C2 of minus earth,
And positive pole is connected with the OUT pin of voltage stabilizing chip U2, the electric capacity C3 of minus earth composition；Described
The OUT pin of voltage stabilizing chip U1 is also connected with the N pole of diode D2, its GND pin ground connection；Institute
The OUT pin stating voltage stabilizing chip U2 is also connected with on-off circuit, its GND pin ground connection, its IN pipe
Foot then cathode output end with diode rectifier U is connected；The negative pole output of described diode rectifier U
End ground connection；The input of described diode rectifier U of the same name with the secondary inductance coil of transformator T respectively
End is connected with non-same polarity；The former limit inductance coil of described transformator T is as power input.
Described on-off circuit is by NAND gate A1, NAND gate A2, audion VT1, audion VT2, water pump
M, the resistance R6 being serially connected between the outfan of NAND gate A1 and the base stage of audion VT1, be serially connected in
The negative pole of the resistance R5 between negative pole and the outfan of NAND gate A2 of not gate A1, one end and NAND gate A2
Be connected, the resistance R4 of other end ground connection, be serially connected in the colelctor electrode of audion VT1 and voltage stabilizing chip U2
Relay K between OUT pin, and positive pole is connected with the emitter stage of audion VT1, negative pole and three
The electric capacity C5 composition that the colelctor electrode of pole pipe VT2 is connected；The positive pole of described NAND gate A2 and control chip
The LX pin of U3 is connected, its outfan is connected with the base stage of audion VT2；Described audion VT2
Grounded emitter；The plus earth of described NAND gate A1, its outfan are connected with the positive pole of NAND gate A2
Connect；The normally opened contact K-1 of described relay K is then serially connected on the power supply main line of water pump.
Described voltage stabilizing chip U1 and voltage stabilizing chip U2 is 7809 voltage stabilizing chips, and described control chip U3 is
The integrated chip of A6210.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) present invention uses the integrated chip of A6210 as control chip, and combines gate and carries out water pump
Controlling, compare traditional control system and use mechanical switch to control, the misoperation rate of the present invention is lower,
Pump working can be controlled more accurately.
(2) present invention has stable working power, improves the stability of the present invention greatly.
(3) current signal of output control chip can be amplified processing by the present invention, makes control chip more
Good is identified signal, and exports control signal accurately, improves the present invention the most greatly to water pump
Control accuracy.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the structure chart of the signal amplification circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by control chip U3, diode D2, detection probe Q1, detection
Probe Q2, is serially connected in the resistance R2 between the P pole of detection probe Q1 and diode D2, is serially connected in detection
Probe Q1 and the VIN pin of control chip U3 between resistance R1, N pole be connected with detection probe Q1,
The diode D1 that P pole is connected with the TON pin of control chip U3, positive pole is with control chip U3's
The electric capacity C4 that BOOT pin is connected, negative pole is connected with the LX pin of control chip U3, is serially connected in
Resistance R3 between NC pin and the GND pin of control chip U3, with the ISEN of control chip U3
The signal amplification circuit that pin is connected, the power circuit being connected with the N pole of diode D2, and string
The on-off circuit composition being connected between the LX pin of power circuit and control chip U3；Described control chip
The GND pin ground connection of U3；Described signal amplification circuit is connected with detection probe Q2.In order to preferably
Implementing the present invention, the described control chip U3 integrated chip of preferred A6210 realizes.
Wherein, this power circuit is by transformator T, diode rectifier U, voltage stabilizing chip U1, voltage stabilizing chip
U2, electric capacity C1, electric capacity C2 and electric capacity C3 form.
During connection, the positive pole of electric capacity C1 is connected with the IN pin of voltage stabilizing chip U1, its negative pole and two poles
The cathode output end of pipe commutator U is connected.The positive pole of electric capacity C2 and the OUT pin of voltage stabilizing chip U1
Be connected, its minus earth.The positive pole of electric capacity C3 is connected with the OUT pin of voltage stabilizing chip U2, it
Minus earth.
Meanwhile, the OUT pin of described voltage stabilizing chip U1 be also connected with the N pole of diode D2, its GND
Pin ground connection.The OUT pin of described voltage stabilizing chip U2 is also connected with on-off circuit, its GND pin
Ground connection, its IN pin then cathode output end with diode rectifier U is connected.Described diode rectifier
The cathode output end ground connection of U.The input of described diode rectifier U is electric with the secondary of transformator T respectively
The Same Name of Ends of sense coil is connected with non-same polarity.The former limit inductance coil of described transformator T is defeated as power supply
Enter end and connect 220V civil power.In order to preferably implement the present invention, described voltage stabilizing chip U1 and voltage stabilizing chip U2
7809 voltage stabilizing chips are all used to realize.
It addition, described on-off circuit is by NAND gate A1, NAND gate A2, audion VT1, audion VT2,
Water pump M, resistance R4, resistance R5, resistance R6, electric capacity C5 and relay K composition.
During connection, resistance R6 is serially connected between the outfan of NAND gate A1 and the base stage of audion VT1.Electricity
Resistance R5 is serially connected between the negative pole of NAND gate A1 and the outfan of NAND gate A2.One end of resistance R4 with
The negative pole of not gate A2 is connected, its other end ground connection.Relay K is serially connected in the colelctor electrode of audion VT1
And between the OUT pin of voltage stabilizing chip U2.The positive pole of electric capacity C5 is connected with the emitter stage of audion VT1
Connect, its negative pole is connected with the colelctor electrode of audion VT2.
The positive pole of described NAND gate A2 is connected with the LX pin of control chip U3, its outfan and three poles
The base stage of pipe VT2 is connected.The grounded emitter of described audion VT2；The positive pole of described NAND gate A1
Ground connection, its outfan are connected with the positive pole of NAND gate A2.The normally opened contact K-1 of described relay K is then
It is serially connected on the power supply main line of water pump M.
As in figure 2 it is shown, described signal amplification circuit is by field effect transistor MOS, audion VT3, audion
VT4, resistance R7, potentiometer R8, resistance R9, resistance R10, resistance R11, resistance R12, diode
D3, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, electric capacity C10 and electric capacity C11 form.
During connection, the negative pole of electric capacity C6 is connected with the grid of field effect transistor MOS, its positive pole is as this letter
The input of number amplifying circuit is also connected with detection probe Q2.Resistance R7 is serially connected in the negative pole of electric capacity C6
And between the emitter stage of audion VT4.One end of potentiometer R8 is connected with the source electrode of field effect transistor MOS,
Its other end be connected with the emitter stage of audion VT4 while ground connection.The positive pole of electric capacity C7 and field effect
The drain electrode of pipe MOS is connected, its negative pole is connected with the base stage of audion VT3.The positive pole of electric capacity C8 with
The drain electrode of field effect transistor MOS is connected, its negative pole emitter stage with audion VT4 after resistance R9 is connected
Connect.Resistance R10 is serially connected between the drain electrode of field effect transistor MOS and the colelctor electrode of audion VT3.Two poles
The N pole of pipe D3 is connected with the emitter stage of audion VT4, the emitter stage phase of its P pole and audion VT3
Connect.Resistance R11 is serially connected between the drain electrode of field effect transistor MOS and the colelctor electrode of audion VT4.Electricity
The positive pole holding C9 is connected with the colelctor electrode of audion VT4, defeated as this signal amplification circuit of its negative pole
Go out end and be connected with the ISEN pin of control chip U3.The negative pole of electric capacity C11 and the control of potentiometer R8
End processed is connected, its positive pole negative pole with electric capacity C9 after resistance R12 is connected.The positive pole of electric capacity C10
Be connected with the base stage of audion VT4, its negative pole is connected with the positive pole of electric capacity C11.Described audion
The base stage of VT3 is connected with the negative pole of electric capacity C8.
During work, detection probe Q1 and detection probe Q2 are inserted in soil, and make detection probe Q1 and inspection
Probing head Q2 is at a distance of 1～2mm.When soil moisture reaches established standards, detection probe Q1 and detection probe
Resistance between Q2 is the least, the LX pin of control chip U3 output high level, NAND gate A1 and with
Not gate A2 then output low level, audion VT1 and audion VT2 cut-off, at this moment relay K must not electricity
Its normally opened contact keeps continuing out, and water pump M does not works.When soil moisture reduces, detection probe Q1 and inspection
Resistance between probing head Q2 increases, the LX pin output low level of control chip U3, NAND gate A1
Then exporting high level with NAND gate A2 and make audion VT1 and audion VT2 conducting, at this moment relay K obtains
Electricity its normally opened contact Guan Bi, water pump M starts working.
The present invention uses the integrated chip of A6210 as control chip, and combines gate and is controlled water pump,
Comparing traditional control system uses mechanical switch to control, and the misoperation rate of the present invention is lower, it is possible to more
Control pump working accurately.The current signal of output control chip can be amplified processing by the present invention,
Make control chip preferably signal be identified, and export control signal accurately, improve the most greatly
The present invention control accuracy to water pump.
As it has been described above, just can well realize the present invention.
Claims (5)
1. an automatic irrigating control system based on signal amplification circuit, it is characterised in that: main by controlling
Chip U3, diode D2, detection probe Q1, detection probe Q2, it is serially connected in detection probe Q1 and two poles
Resistance R2 between the P pole of pipe D2, be serially connected in detection probe Q1 and control chip U3 VIN pin it
Between resistance R1, N pole be connected with detection probe Q1, the TON pin phase of P pole and control chip U3
The diode D1 connected, positive pole is connected with the BOOT pin of control chip U3, negative pole and control chip
The electric capacity C4 that the LX pin of U3 is connected, is serially connected in NC pin and the GND pin of control chip U3
Between resistance R3, the signal amplification circuit being connected with the ISEN pin of control chip U3, with diode
The power circuit that the N pole of D2 is connected, and it is serially connected in the LX pin of power circuit and control chip U3
Between on-off circuit composition；The GND pin ground connection of described control chip U3；Described signal amplification circuit
It is connected with detection probe Q2.
A kind of automatic irrigating control system based on signal amplification circuit the most according to claim 1, its
It is characterised by: described signal amplification circuit, by field effect transistor MOS, audion VT3, audion VT4, is born
Pole is connected with the grid of field effect transistor MOS, positive pole is as the electric capacity of the input of this signal amplification circuit
C6, the resistance R7 being serially connected between the negative pole of electric capacity C6 and the emitter stage of audion VT4, one end is imitated with field
Should the source electrode of pipe MOS be connected, the other end be connected with the emitter stage of audion VT4 while ground connection
Potentiometer R8, positive pole is connected with the drain electrode of field effect transistor MOS, the base stage phase of negative pole and audion VT3
Connect electric capacity C7, positive pole is connected with the drain electrode of field effect transistor MOS, negative pole after resistance R9 with three poles
The electric capacity C8 that the emitter stage of pipe VT4 is connected, is serially connected in drain electrode and the audion VT3 of field effect transistor MOS
Colelctor electrode between resistance R10, N pole be connected with the emitter stage of audion VT4, P pole and audion
The diode D3 that the emitter stage of VT3 is connected, is serially connected in drain electrode and the audion VT4 of field effect transistor MOS
Colelctor electrode between resistance R11, positive pole is connected with the colelctor electrode of audion VT4, negative pole is as this letter
The electric capacity C9 of the outfan of number amplifying circuit, negative pole is connected with the control end of potentiometer R8, positive pole is through electricity
The electric capacity C11 that is connected with the negative pole of electric capacity C9 after resistance R12, and the base stage of positive pole and audion VT4
Be connected, electric capacity C10 that negative pole is connected with the positive pole of electric capacity C11 composition；The base of described audion VT3
Pole is connected with the negative pole of electric capacity C8；The input of described signal amplification circuit is connected with detection probe Q2,
Its outfan is then connected with the ISEN pin of control chip U3.
A kind of automatic irrigating control system based on signal amplification circuit the most according to claim 2, its
It is characterised by: described power circuit is by transformator T, diode rectifier U, voltage stabilizing chip U1, voltage stabilizing core
Sheet U2, positive pole is connected with the IN pin of voltage stabilizing chip U1, the positive pole of negative pole and diode rectifier U
The electric capacity C1 that outfan is connected, positive pole is connected with the OUT pin of voltage stabilizing chip U1, minus earth
Electric capacity C2, and positive pole is connected with the OUT pin of voltage stabilizing chip U2, the electric capacity C3 group of minus earth
Become；The OUT pin of described voltage stabilizing chip U1 is also connected with the N pole of diode D2, its GND pin
Ground connection；The OUT pin of described voltage stabilizing chip U2 is also connected with on-off circuit, its GND pin ground connection,
Its IN pin then cathode output end with diode rectifier U is connected；Described diode rectifier U's
Cathode output end ground connection；The input of described diode rectifier U respectively with the secondary inductance line of transformator T
The Same Name of Ends of circle is connected with non-same polarity；The former limit inductance coil of described transformator T is as power input.
A kind of automatic irrigating control system based on signal amplification circuit the most according to claim 3, its
Be characterised by: described on-off circuit by NAND gate A1, NAND gate A2, audion VT1, audion VT2,
Water pump M, the resistance R6 being serially connected between the outfan of NAND gate A1 and the base stage of audion VT1, concatenation
Resistance R5 between the negative pole and the outfan of NAND gate A2 of NAND gate A1, one end and NAND gate A2
Negative pole is connected, the resistance R4 of other end ground connection, is serially connected in colelctor electrode and the voltage stabilizing chip of audion VT1
Relay K between the OUT pin of U2, and positive pole is connected with the emitter stage of audion VT1, negative
The electric capacity C5 composition that pole is connected with the colelctor electrode of audion VT2；The positive pole of described NAND gate A2 and control
The LX pin of chip U3 is connected, its outfan is connected with the base stage of audion VT2；Described audion
The grounded emitter of VT2；The plus earth of described NAND gate A1, its outfan and the positive pole of NAND gate A2
It is connected；The normally opened contact K-1 of described relay K is then serially connected on the power supply main line of water pump.
A kind of automatic irrigating control system based on signal amplification circuit the most according to claim 4, its
It is characterised by: described voltage stabilizing chip U1 and voltage stabilizing chip U2 is 7809 voltage stabilizing chips, described control core
Sheet U3 is the integrated chip of A6210.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610529361.4A CN105993859A (en) | 2016-07-06 | 2016-07-06 | Automatic irrigation control system based on signal amplification circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610529361.4A CN105993859A (en) | 2016-07-06 | 2016-07-06 | Automatic irrigation control system based on signal amplification circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105993859A true CN105993859A (en) | 2016-10-12 |
Family
ID=57107709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610529361.4A Pending CN105993859A (en) | 2016-07-06 | 2016-07-06 | Automatic irrigation control system based on signal amplification circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105993859A (en) |
-
2016
- 2016-07-06 CN CN201610529361.4A patent/CN105993859A/en active Pending
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Application publication date: 20161012 |