CN113389772A - Agricultural small-size hydraulic pressure station control system - Google Patents

Agricultural small-size hydraulic pressure station control system Download PDF

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Publication number
CN113389772A
CN113389772A CN202110698598.6A CN202110698598A CN113389772A CN 113389772 A CN113389772 A CN 113389772A CN 202110698598 A CN202110698598 A CN 202110698598A CN 113389772 A CN113389772 A CN 113389772A
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China
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pin
proportional amplifier
digital proportional
terminal
module
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CN113389772B (en
Inventor
杨洲
丁允贺
申东英
郭杰
段洁利
蒋寅龙
徐兴
李君�
刘恩秀
蒋婷婷
李洋
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South China Agricultural University
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South China Agricultural University
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F15B21/0423—Cooling
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The invention discloses an agricultural small-sized hydraulic station control system, which drives an agricultural hydraulic motor and a hydraulic cylinder by arranging a first upper computer module, a second upper computer module, a PLC (programmable logic controller) control module, a one-way valve on-off module, a rotary encoder module, a digital proportional amplifier module and a relay positive and negative control output module, wherein the control system can remotely control the one-way valve on-off module, the rotary encoder module, the digital proportional amplifier module and the relay positive and negative control output module through the first upper computer module, so that the hydraulic station is started and stopped, and the positive and negative control of each oil way is realized, and meanwhile, the second upper computer module is used for carrying out system monitoring, data storage and positive and negative flow control of each oil way; the whole system realizes the adjustment of the working state of the hydraulic station in an electric control mode, reduces the labor intensity and realizes the functions of stepless speed regulation and accurate positioning.

Description

Agricultural small-size hydraulic pressure station control system
Technical Field
The invention relates to the technical field of agricultural hydraulic station control, in particular to a control system of an agricultural small-sized hydraulic station.
Background
The small hydraulic station is widely applied to agricultural mechanical equipment, and has strong noise resistance and pollution resistance, and large driving force and driving torque; however, as the agricultural mechanical equipment is gradually improved and develops towards automation and intellectualization, the precision and automation technology is proposed, and the shortcomings of the manually controlled hydraulic station are gradually highlighted; therefore, the realization of the electrical control of the hydraulic station is the development direction of the existing hydraulic system, the information is acquired by a sensor, signals of the information processed by a main controller can carry out precise control on the hydraulic station, and the realization of the remote control of the hydraulic station is particularly important.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a control system of an agricultural small hydraulic station, the agricultural small hydraulic station is mainly used for driving a hydraulic motor and a hydraulic cylinder, a multi-path relay positive and negative control output is additionally arranged, the control system can realize the starting and stopping of the hydraulic station and the positive and negative control of each oil way through the remote control of a first upper computer module, and simultaneously carries out system monitoring and data storage through a second upper computer module and realizes the positive and negative flow control of each oil way; the whole system realizes the adjustment of the working state of the hydraulic station in an electric control mode, reduces the labor intensity and realizes the functions of stepless speed regulation and accurate positioning.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: a control system of an agricultural small-sized hydraulic station comprises a direct-current power supply module, a voltage stabilizing module, a live wire, a zero line, a first upper computer module, a second upper computer module, a PLC control module, a first relay module, a second relay module, a first analog quantity output module, a second analog quantity output module, a relay positive and negative control output terminal bank, a rotary encoder terminal bank, a digital proportional amplifier terminal bank, a one-way valve on-off terminal, a one-way valve on-off module, a relay positive and negative control output module, a rotary encoder module and a digital proportional amplifier module; wherein, the direct current power module is electrically connected with the voltage stabilizing module, the output end of the voltage stabilizing module is respectively electrically connected with a live wire and a null wire, the input power positive pole and the input power negative pole of the first upper computer module, the second upper computer module, the PLC control module, the first analog quantity output module and the second analog quantity output module are respectively electrically connected with the null wire and the live wire through fuses, the first upper computer module is electrically connected with the PLC control module, the second upper computer module is electrically connected with the PLC control module, the PLC control module is electrically connected with the rotary encoder terminal bank, the first analog quantity output module is electrically connected with the PLC control module through a communication cable and is electrically connected with the digital proportional amplifier terminal bank, the second analog quantity output module is electrically connected with the first analog quantity output module through a communication cable and is electrically connected with the digital proportional amplifier terminal bank, the relay positive and negative control output terminal row group is connected with the PLC control module through a first relay module, and this first relay module is connected with zero line and live wire electricity, relay positive and negative control output module is connected with relay positive and negative control output terminal row group electricity, digital proportional amplifier terminal row group and check valve break-make terminal are connected with the zero line electricity respectively, and digital proportional amplifier terminal row group and check valve break-make terminal all are connected with the PLC control module electricity through a second relay module, the second relay module is connected with the live wire electricity, check valve break-make terminal is connected with check valve break-make module electricity, digital proportional amplifier module and digital proportional amplifier terminal row group electricity are connected, rotary encoder terminal row group is connected with zero line, live wire electricity and rotary encoder module electricity respectively.
Further, a COM1 pin and an NC1 pin of the first upper computer module constitute a first output unit, a COM2 pin and an NC2 pin of the first upper computer module constitute a second output unit, a COM3 pin and an NC3 pin of the first upper computer module constitute a third output unit, a COM4 pin and an NC4 pin of the first upper computer module constitute a fourth output unit, a COM5 pin and an NC5 pin of the first upper computer module constitute a fifth output unit, a COM6 pin and an NC6 pin of the first upper computer module constitute a sixth output unit, a COM7 pin and an NC7 pin of the first upper computer module constitute a seventh output unit, a COM8 pin and an NC8 pin of the first upper computer module constitute an eighth output unit, a COM9 pin and an NC9 pin of the first upper computer module constitute a ninth output unit, a COM10 pin and an NC10 pin of the first upper computer module constitute a tenth output unit, the COM11 pin and the NC11 pin of the first upper computer module form an eleventh output unit, the COM12 pin and the NC12 pin of the first upper computer module form a twelfth output unit, the COM13 pin and the NC13 pin of the first upper computer module form a thirteenth output unit, the COM14 pin and the NC14 pin of the first upper computer module form a fourteenth output unit, the COM15 pin and the NC15 pin of the first upper computer module form a fifteenth output unit, and the COM16 pin and the NC16 pin of the first upper computer module form a sixteenth output unit; an NC1 pin of the first upper computer module is connected with an X10 input pin of the PLC control module, an NC2 pin of the first upper computer module is connected with an X11 input pin of the PLC control module, an NC3 pin of the first upper computer module is connected with an X12 input pin of the PLC control module, an NC4 pin of the first upper computer module is connected with an X13 input pin of the PLC control module, an NC5 pin of the first upper computer module is connected with an X14 input pin of the PLC control module, an NC6 pin of the first upper computer module is connected with an X15 input pin of the PLC control module, an NC7 pin of the first upper computer module is connected with an X16 input pin of the PLC control module, an NC8 pin of the first upper computer module is connected with an X17 input pin of the PLC control module, an NC6 pin of the first upper computer module is connected with an X20 input pin of the PLC control module, and an NC8 pin of the first upper computer module is connected with an X21 input pin of the PLC control module, the NC11 pin of the first upper computer module is connected with an X22 input pin of the PLC control module, an NC12 pin of the first upper computer module is connected with an X23 input pin of the PLC control module, an NC13 pin of the first upper computer module is connected with an X24 input pin of the PLC control module, an NC14 pin of the first upper computer module is connected with an X25 input pin of the PLC control module, an NC15 pin of the first upper computer module is connected with an X26 input pin of the PLC control module, and an NC16 pin of the first upper computer module is connected with an X27 input pin of the PLC control module.
Further, an X6 input pin of the PLC control module is connected to the first switch, an X7 input pin of the PLC control module is connected to the second switch, a 0V-side input pin of the PLC control module is connected to the first switch, the second switch, and a COM1 pin, a COM2 pin, a COM3 pin, a COM4 pin, a COM5 pin, a COM6 pin, a COM7 pin, a COM8 pin, a COM9 pin, a COM10 pin, a COM11 pin, a COM12 pin, a COM13 pin, a COM14 pin, a COM15 pin, and a COM16 pin of the first upper computer module, an S/S-side input pin of the PLC control module is connected to a 24V-side input pin of the PLC control module, and COM1, COM2, COM3, COM4, and 5 output pins of the PLC control module are connected to a zero line.
Further, the rotary encoder terminal row group comprises a first rotary encoder terminal and a second rotary encoder terminal, and the rotary encoder module comprises a first rotary encoder and a second rotary encoder; the first pin of the first rotary encoder terminal is connected with the X1 input pin of the PLC control module, the second pin of the first rotary encoder terminal is connected with the X0 input pin of the PLC control module, the fourth pin of the first rotary encoder terminal is connected with a zero line, the fifth pin of the first rotary encoder terminal is connected with a live line, the sixth pin of the first rotary encoder terminal is connected with the power supply positive pole of the first rotary encoder, the seventh pin of the first rotary encoder terminal is connected with the power supply negative pole of the first rotary encoder, the eighth pin of the first rotary encoder terminal is connected with the shielded wire of the first rotary encoder, the ninth pin of the first rotary encoder terminal is connected with the pulse output A of the first rotary encoder, the tenth pin of the first rotary encoder terminal is connected with the pulse output B of the first rotary encoder; the first pin of the second rotary encoder terminal is connected with the X4 input pin of the PLC control module, the second pin of the second rotary encoder terminal is connected with the X3 input pin of the PLC control module, a fourth pin of the second rotary encoder terminal is connected with a zero line, a fifth pin of the second rotary encoder terminal is connected with a live line, the sixth pin of the second rotary encoder terminal is connected with the power supply positive pole of the second rotary encoder, the seventh pin of the second rotary encoder terminal is connected with the negative pole of the power supply of the second rotary encoder, the eighth pin of the second rotary encoder terminal is connected with the shielded wire of the second rotary encoder, the ninth pin of the second rotary encoder terminal is connected with the pulse output A of the second rotary encoder, and the tenth pin of the second rotary encoder terminal is connected with the pulse output B of the second rotary encoder.
Further, the first relay module comprises a KA1 intermediate relay, a KA2 intermediate relay, a KA3 intermediate relay, a KA4 intermediate relay, a KA5 intermediate relay and a KA6 intermediate relay, a fifth pin of the KA1 intermediate relay is connected with a zero line, a sixth pin of the KA1 intermediate relay is connected with a live line, a seventh pin of the KA1 intermediate relay is connected with a Y10 output pin of the PLC control module, a fifth pin of the KA2 intermediate relay is connected with the zero line, a sixth pin of the KA2 intermediate relay is connected with the live line, a seventh pin of the KA2 intermediate relay is connected with a Y11 output pin of the PLC control module, a fifth pin of the KA3 intermediate relay is connected with the zero line, a sixth pin of the KA3 intermediate relay is connected with the live line, a seventh pin of the KA3 intermediate relay is connected with a Y12 output pin of the PLC control module, a fifth pin of the KA4 intermediate relay is connected with the zero line, the sixth pin of KA4 auxiliary relay is connected with the live wire, the seventh pin of KA4 auxiliary relay is connected with PLC control module's Y13 output pin, the fifth pin of KA5 auxiliary relay is connected with the zero line, the sixth pin of KA5 auxiliary relay is connected with the live wire, the seventh pin of KA5 auxiliary relay is connected with PLC control module's Y14 output pin, the fifth pin of KA6 auxiliary relay is connected with the zero line, the sixth pin of KA6 auxiliary relay is connected with the live wire, the seventh pin of KA6 auxiliary relay is connected with PLC control module's Y15 output pin.
Further, the relay positive and negative control output terminal bank comprises a first relay positive and negative control output terminal, a second relay positive and negative control output terminal and a third relay positive and negative control output terminal, and the relay positive and negative control output module comprises a first electric push rod, a second electric push rod and a third electric push rod; the first pin of the positive and negative control output terminal of the first relay is connected with the third pin of the KA1 intermediate relay of the first relay module and the third pin of the KA2 intermediate relay of the first relay module, the second pin of the positive and negative control output terminal of the first relay is connected with the fourth pin of the KA1 intermediate relay of the first relay module and the fourth pin of the KA2 intermediate relay of the first relay module, the third pin of the positive and negative control output terminal of the first relay is connected with the power supply positive pole of the first electric push rod, and the fourth pin of the positive and negative control output terminal of the first relay is connected with the power supply negative pole of the first electric push rod; the first pin of the positive and negative control output terminal of the second relay is connected with the third pin of the KA3 intermediate relay of the first relay module and the third pin of the KA4 intermediate relay of the first relay module, the second pin of the positive and negative control output terminal of the second relay is connected with the fourth pin of the KA3 intermediate relay of the first relay module and the fourth pin of the KA4 intermediate relay of the first relay module, the third pin of the positive and negative control output terminal of the second relay is connected with the power supply positive pole of the second electric push rod, and the fourth pin of the positive and negative control output terminal of the second relay is connected with the power supply negative pole of the second electric push rod; the first pin of the positive and negative control output terminal of the third relay is connected with the third pin of the KA5 intermediate relay of the first relay module and the third pin of the KA6 intermediate relay of the first relay module, the second pin of the positive and negative control output terminal of the third relay is connected with the fourth pin of the KA5 intermediate relay of the first relay module and the fourth pin of the KA6 intermediate relay of the first relay module, the third pin of the positive and negative control output terminal of the third relay is connected with the power supply anode of the third electric push rod, and the fourth pin of the positive and negative control output terminal of the third relay is connected with the power supply cathode of the third electric push rod.
Further, the second relay module comprises a KA7 intermediate relay, a KA8 intermediate relay, a KA9 intermediate relay, a KA10 intermediate relay, a KA11 intermediate relay, a KA12 intermediate relay, a KA13 intermediate relay, a KA14 intermediate relay and a KA15 intermediate relay, a third pin of the KA7 intermediate relay is connected with a live wire, a seventh pin of the KA7 intermediate relay is connected with a Y16 output pin of the PLC control module, a third pin of the KA8 intermediate relay is connected with the live wire, a seventh pin of the KA8 intermediate relay is connected with a Y17 output pin of the PLC control module, a third pin of the KA9 intermediate relay is connected with the live wire, a seventh pin of the KA9 intermediate relay is connected with a Y KA 20 output pin of the PLC control module, a third pin of the KA10 intermediate relay is connected with the live wire, a seventh pin of the KA10 intermediate relay is connected with a Y21 output pin of the PLC control module, the third pin of the KA11 intermediate relay is connected with the live wire, the seventh pin of the KA11 intermediate relay is connected with the Y22 output pin of the PLC control module, the third pin of the KA12 intermediate relay is connected with the live wire, the seventh pin of the KA12 intermediate relay is connected with the Y23 output pin of the PLC control module, the third pin of the KA13 intermediate relay is connected with the live wire, the seventh pin of the KA13 intermediate relay is connected with the Y24 output pin of the PLC control module, the third pin of the KA14 intermediate relay is connected with the live wire, the seventh pin of the KA14 intermediate relay is connected with the Y25 output pin of the PLC control module, the third pin of the KA15 intermediate relay is connected with the live wire, the seventh pin of the KA15 intermediate relay is connected with the Y26 output pin of the PLC control module, the fifth pin of the KA15 intermediate relay is connected with the one-way valve on-off terminal, and a fourth pin of the one-way valve on-off terminal is connected with the zero line.
Further, the digital proportional amplifier terminal bank group comprises a first digital proportional amplifier terminal, a second digital proportional amplifier terminal, a third digital proportional amplifier terminal, a fourth digital proportional amplifier terminal, a fifth digital proportional amplifier terminal, a sixth digital proportional amplifier terminal, a seventh digital proportional amplifier terminal and an eighth digital proportional amplifier terminal, and the digital proportional amplifier module comprises a first digital proportional amplifier, a second digital proportional amplifier, a third digital proportional amplifier and a fourth digital proportional amplifier; the first pin of the first digital proportional amplifier terminal is connected with the I-pin of the first channel of the first analog output module, the second pin of the first digital proportional amplifier terminal is connected with the VI + pin of the first channel of the first analog output module, the fourth pin of the first digital proportional amplifier terminal is connected with the zero line, the fifth pin of the first digital proportional amplifier terminal is connected with the fifth pin of the KA7 intermediate relay, the sixth pin of the first digital proportional amplifier terminal is connected with the first power supply positive pole of the first digital proportional amplifier, the seventh pin of the first digital proportional amplifier terminal is connected with the first power supply negative pole of the first digital proportional amplifier, the eighth pin of the first digital proportional amplifier terminal is connected with the first input reference voltage end of the first digital proportional amplifier, a ninth pin of the first digital proportional amplifier terminal is connected with a first input signal anode of the first digital proportional amplifier, and a tenth pin of the first digital proportional amplifier terminal is connected with a first input signal cathode of the first digital proportional amplifier; a first pin of a second digital proportional amplifier terminal is connected with an I-pin of a first channel of a second analog output module, a second pin of the second digital proportional amplifier terminal is connected with a VI + pin of the first channel of the second analog output module, a fourth pin of the second digital proportional amplifier terminal is connected with a zero line, a fifth pin of the second digital proportional amplifier terminal is connected with a fifth pin of a KA8 intermediate relay, a sixth pin of the second digital proportional amplifier terminal is connected with a second positive electrode of a first digital proportional amplifier, a seventh pin of the second digital proportional amplifier terminal is connected with a second negative electrode of the first digital proportional amplifier, an eighth pin of the second digital proportional amplifier terminal is connected with a second input reference voltage end of the first digital proportional amplifier, a ninth pin of the second digital proportional amplifier terminal is connected with the second input signal anode of the first digital proportional amplifier, and a tenth pin of the second digital proportional amplifier terminal is connected with the second input signal cathode of the first digital proportional amplifier; a first pin of a third digital proportional amplifier terminal is connected with an I-pin of a second channel of the first analog output module, a second pin of the third digital proportional amplifier terminal is connected with a VI + pin of a second channel of the first analog output module, a fourth pin of the third digital proportional amplifier terminal is connected with a zero line, a fifth pin of the third digital proportional amplifier terminal is connected with a fifth pin of a KA9 intermediate relay, a sixth pin of the third digital proportional amplifier terminal is connected with a first power supply positive pole of the second digital proportional amplifier, a seventh pin of the third digital proportional amplifier terminal is connected with a first power supply negative pole of the second digital proportional amplifier, an eighth pin of the third digital proportional amplifier terminal is connected with a first input reference voltage end of the second digital proportional amplifier, a ninth pin of the third digital proportional amplifier terminal is connected with the first input signal anode of the second digital proportional amplifier, and a tenth pin of the third digital proportional amplifier terminal is connected with the first input signal cathode of the second digital proportional amplifier; a first pin of a fourth digital proportional amplifier terminal is connected with an I-pin of a second channel of the second analog output module, a second pin of the fourth digital proportional amplifier terminal is connected with a VI + pin of a second channel of the second analog output module, a fourth pin of the fourth digital proportional amplifier terminal is connected with a zero line, a fifth pin of the fourth digital proportional amplifier terminal is connected with a fifth pin of a KA10 intermediate relay, a sixth pin of the fourth digital proportional amplifier terminal is connected with a second positive power supply of the second digital proportional amplifier, a seventh pin of the fourth digital proportional amplifier terminal is connected with a second negative power supply of the second digital proportional amplifier, an eighth pin of the fourth digital proportional amplifier terminal is connected with a second input reference voltage end of the second digital proportional amplifier, a ninth pin of the fourth digital proportional amplifier terminal is connected with the second input signal anode of the second digital proportional amplifier, and a tenth pin of the fourth digital proportional amplifier terminal is connected with the second input signal cathode of the second digital proportional amplifier; a first pin of a fifth digital proportional amplifier terminal is connected with an I-pin of a third channel of the first analog output module, a second pin of the fifth digital proportional amplifier terminal is connected with a VI + pin of a third channel of the first analog output module, a fourth pin of the fifth digital proportional amplifier terminal is connected with a zero line, a fifth pin of the fifth digital proportional amplifier terminal is connected with a fifth pin of a KA11 intermediate relay, a sixth pin of the fifth digital proportional amplifier terminal is connected with a first power supply positive electrode of a third digital proportional amplifier, a seventh pin of the fifth digital proportional amplifier terminal is connected with a first power supply negative electrode of the third digital proportional amplifier, an eighth pin of the fifth digital proportional amplifier terminal is connected with a first input reference voltage end of the third digital proportional amplifier, a ninth pin of the fifth digital proportional amplifier terminal is connected with a first input signal anode of a third digital proportional amplifier, and a tenth pin of the fifth digital proportional amplifier terminal is connected with a first input signal cathode of the third digital proportional amplifier; a first pin of a sixth digital proportional amplifier terminal is connected with an I-pin of a third channel of a second analog output module, a second pin of the sixth digital proportional amplifier terminal is connected with a VI + pin of a third channel of a second analog output module, a fourth pin of the sixth digital proportional amplifier terminal is connected with a zero line, a fifth pin of the sixth digital proportional amplifier terminal is connected with a fifth pin of a KA12 intermediate relay, a sixth pin of the sixth digital proportional amplifier terminal is connected with a second power supply positive electrode of a third digital proportional amplifier, a seventh pin of the sixth digital proportional amplifier terminal is connected with a second power supply negative electrode of the third digital proportional amplifier, an eighth pin of the sixth digital proportional amplifier terminal is connected with a second input reference voltage end of the third digital proportional amplifier, a ninth pin of the sixth digital proportional amplifier terminal is connected with a second input signal anode of a third digital proportional amplifier, and a tenth pin of the sixth digital proportional amplifier terminal is connected with a second input signal cathode of the third digital proportional amplifier; a first pin of a seventh digital proportional amplifier terminal is connected with an I-pin of a fourth channel of the first analog output module, a second pin of the seventh digital proportional amplifier terminal is connected with a VI + pin of a fourth channel of the first analog output module, a fourth pin of the seventh digital proportional amplifier terminal is connected with a zero line, a fifth pin of the seventh digital proportional amplifier terminal is connected with a fifth pin of a KA13 intermediate relay, a sixth pin of the seventh digital proportional amplifier terminal is connected with a first power supply positive pole of a fourth digital proportional amplifier, a seventh pin of the seventh digital proportional amplifier terminal is connected with a first power supply negative pole of the fourth digital proportional amplifier, an eighth pin of the seventh digital proportional amplifier terminal is connected with a first input reference voltage end of the fourth digital proportional amplifier, a ninth pin of the seventh digital proportional amplifier terminal is connected with a first input signal anode of a fourth digital proportional amplifier, and a tenth pin of the seventh digital proportional amplifier terminal is connected with a first input signal cathode of the fourth digital proportional amplifier; a first pin of an eighth digital proportional amplifier terminal is connected with an I-pin of a fourth channel of the second analog output module, a second pin of the eighth digital proportional amplifier terminal is connected with a VI + pin of a fourth channel of the second analog output module, a fourth pin of the eighth digital proportional amplifier terminal is connected with a zero line, a fifth pin of the eighth digital proportional amplifier terminal is connected with a fifth pin of a KA14 intermediate relay, a sixth pin of the eighth digital proportional amplifier terminal is connected with a second positive electrode of a fourth digital proportional amplifier, a seventh pin of the eighth digital proportional amplifier terminal is connected with a second negative electrode of the fourth digital proportional amplifier, and an eighth pin of the eighth digital proportional amplifier terminal is connected with a second input reference voltage end of the fourth digital proportional amplifier, and a ninth pin of the eighth digital proportional amplifier terminal is connected with the second input signal anode of the fourth digital proportional amplifier, and a tenth pin of the eighth digital proportional amplifier terminal is connected with the second input signal cathode of the fourth digital proportional amplifier.
Further, the direct current power supply module comprises a direct current mobile power supply, a circuit breaker and an emergency stop switch which are connected in sequence.
The hydraulic station radiator is electrically connected with the zero line and the live line through a fuse, and is provided with a third switch for controlling the opening and closing of the hydraulic station radiator.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the hydraulic station control system can realize the starting, stopping and positive and negative direction control of each oil way through the remote control of the first upper computer module, simultaneously carries out system monitoring and data storage through the second upper computer module, realizes the positive and negative flow rate control of each oil way, realizes the working state adjustment of the hydraulic station in an electric control mode, reduces the labor intensity and realizes the functions of stepless speed regulation and accurate positioning.
Drawings
Fig. 1 is a schematic diagram of a control system of an agricultural small-sized hydraulic station.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Referring to fig. 1, the agricultural small hydraulic station control system provided by this embodiment includes a dc power supply module, a voltage stabilizing module TC1, a live wire L24, a zero line N24, a first upper computer module 1, a second upper computer module, a PLC control module 2, a first relay module, a second relay module, a first analog output module 3, a second analog output module 4, a relay positive and negative control output terminal bank, a rotary encoder terminal bank, a digital proportional amplifier terminal bank, a check valve on-off terminal 9, a relay positive and negative control output module (not shown in the drawing), a rotary encoder module (not shown in the drawing), a digital proportional amplifier module (not shown in the drawing), and a hydraulic station radiator YE 1;
wherein, the direct current power module comprises a direct current mobile power GB1, a breaker QF1 and an emergency stop switch QS1 which are connected in sequence, the direct current mobile power GB1, the breaker QF1 and the emergency stop switch QS1 are electrically connected with a voltage stabilizing module TC1, the output end of the voltage stabilizing module TC1 is electrically connected with a live wire L24 and a zero wire N24 respectively, the input power positive pole and the input power negative pole of the first upper computer module 1, the second upper computer module, the PLC control module 2, the first analog quantity output module 3 and the second analog quantity output module 4 are electrically connected with a zero wire N24 and a live wire L24 respectively through fuses FU1, FU2, FU3 and FU4, the hydraulic station radiator YE1 is electrically connected with a zero wire N8 and a live wire L24 through fuses FU5, a third switch SB3 is arranged for controlling the opening and closing of the hydraulic station radiator YE1, the third switch SB3 is a self-locking switch 686 type switch, the radiator is rotated when being pressed once, and is reset switch is reset and stops power supply, stopping the rotation of the radiator; the first upper computer module 1 is electrically connected with the PLC control module 2, the second upper computer module is electrically connected with the PLC control module 2, the PLC control module 2 is electrically connected with a rotary encoder terminal bank, the first analog output module 3 is electrically connected with the PLC control module through a communication cable and is electrically connected with a digital proportional amplifier terminal bank, the second analog output module 4 is electrically connected with the first analog output module 3 through a communication cable and is electrically connected with a digital proportional amplifier terminal bank, the types of the first analog output module 3 and the second analog output module 4 are FX3U-4DA, the relay positive and negative control output terminal bank is electrically connected with the PLC control module 2 through a first relay module, the first relay module is electrically connected with a zero line N24 and a live wire L24, the relay positive and negative control output module is electrically connected with the relay positive and negative control output terminal bank, the digital proportional amplifier terminal bank group and the one-way valve on-off terminal 9 are respectively electrically connected with a zero line N24, and are both electrically connected with the PLC control module 2 through a second relay module, the second relay module is electrically connected with a live line L24, the digital proportional amplifier module is electrically connected with the digital proportional amplifier terminal bank group, and the rotary encoder terminal bank group is respectively electrically connected with a zero line N24, a live line L24 and a rotary encoder module;
the model of the first upper computer module 1 is APDC-16K, the COM1 pin and the NC1 pin of the first upper computer module 1 constitute a first output unit T1, the COM2 pin and the NC2 pin of the first upper computer module 1 constitute a second output unit T2, the COM3 pin and the NC3 pin of the first upper computer module 1 constitute a third output unit T3, the COM4 pin and the NC4 pin of the first upper computer module 1 constitute a fourth output unit T4, the COM5 pin and the NC5 pin of the first upper computer module 1 constitute a fifth output unit T5, the COM6 pin and the NC6 pin of the first upper computer module 1 constitute a sixth output unit T6, the COM7 pin and the NC7 pin of the first upper computer module 1 constitute a seventh output unit T7, the COM7 pin and the COM7 pin of the first upper computer module 1 constitute an eighth output unit T7 and the NC7 pin of the first upper computer module 7 constitute a ninth output unit T7 and the COM7 and the NC7 pin of the first upper computer module 7 and the ninth output unit T7, a COM10 pin and an NC10 pin of the first upper computer module 1 constitute a tenth output unit T10, a COM11 pin and an NC11 pin of the first upper computer module 1 constitute an eleventh output unit T11, a COM12 pin and an NC12 pin of the first upper computer module 1 constitute a twelfth output unit T12, a COM13 pin and an NC13 pin of the first upper computer module 1 constitute a thirteenth output unit T13, a COM14 pin and an NC14 pin of the first upper computer module 1 constitute a fourteenth output unit T14, a COM15 pin and an NC15 pin of the first upper computer module 1 constitute a fifteenth output unit T15, and a COM16 pin and an NC16 pin of the first upper computer module 1 constitute a sixteenth output unit T16; an NC1 pin of the first upper computer module 1 is connected with an X10 input pin of the PLC control module, an NC2 pin of the first upper computer module 1 is connected with an X11 input pin of the PLC control module, an NC3 pin of the first upper computer module 1 is connected with an X12 input pin of the PLC control module, an NC4 pin of the first upper computer module 1 is connected with an X13 input pin of the PLC control module, an NC5 pin of the first upper computer module 1 is connected with an X14 input pin of the PLC control module, an NC6 pin of the first upper computer module 1 is connected with an X15 input pin of the PLC control module, an NC7 pin of the first upper computer module 1 is connected with an X16 input pin of the PLC control module, an NC8 pin of the first upper computer module 1 is connected with an X17 input pin of the PLC control module, an NC9 pin of the first upper computer module 1 is connected with an X20 input pin of the PLC control module, an NC10 pin of the first upper computer module 1 is connected with an X21 input pin of a PLC control module, an NC11 pin of the first upper computer module 1 is connected with an X22 input pin of the PLC control module, an NC12 pin of the first upper computer module 1 is connected with an X23 input pin of the PLC control module, an NC13 pin of the first upper computer module 1 is connected with an X24 input pin of the PLC control module, an NC14 pin of the first upper computer module 1 is connected with an X25 input pin of the PLC control module, an NC15 pin of the first upper computer module 1 is connected with an X26 input pin of the PLC control module, and an NC16 pin of the first upper computer module 1 is connected with an X27 input pin of the PLC control module;
the second upper computer module (not shown in the figure) comprises a chip HC1, a chip HC2 and a chip HC3, the models of the chip HC1, the chip HC2 and the chip HC3 are all TPC1061Ti, the anode of an input power supply of the chip HC1 is connected with a live wire L24, and the cathode of the input power supply is connected with a zero line N24; the chip HC2 is communicated with the PLC control module through an RS232C/RS485 interface, the RS232C interface is connected with the end of the PLC control module, and the RS485 interface is connected with the HC2 end of the chip; the chip HC3 is provided with a plurality of interfaces, each interface can be switched with each other, and the switching can be realized by writing an upper computer program, wherein the first interface is a system starting interface, the second interface is a system parameter adjusting interface, the third interface is a system running state monitoring interface, and the fourth interface is a system data storage refreshing interface;
the model number of the PLC control module 2 is FX3U-48M-T, an X6 input pin of the PLC control module 2 is connected with a first switch SB1, an X7 input pin of the PLC control module is connected with a second switch SB2, a 0V end input pin of the PLC control module is respectively connected with a first switch SB1, a second switch SB2 and a COM1 pin, a COM2 pin, a COM3 pin, a COM4 pin, a COM5 pin, a COM6 output pin, a COM6 pin and a COM6 pin of the first upper computer module, an S/S end input pin of the PLC control module is connected with a 24V end input pin of the PLC control module, and the COM6 output pin, the COM6 output pin and the COM6 output pin are connected with a null line N output pin;
the rotary encoder terminal row group comprises a first rotary encoder terminal 5a and a second rotary encoder terminal 5b, and the rotary encoder module (not shown in the figure) comprises a first rotary encoder and a second rotary encoder, and can be used for measuring external loads such as the rotating speed of a hydraulic motor, the running speed of an operation carrier and the like, so that the operation can be conveniently carried out, and data can be acquired in real time; the first pin of the first rotary encoder terminal 5a is connected with an X1 input pin of the PLC control module 2, the second pin of the first rotary encoder terminal 5a is connected with an X0 input pin of the PLC control module 2, the fourth pin of the first rotary encoder terminal 5a is connected with a zero line N24, the fifth pin of the first rotary encoder terminal 5a is connected with a live line L24, the sixth pin of the first rotary encoder terminal 5a is connected with a power supply anode of the first rotary encoder, the seventh pin of the first rotary encoder terminal 5a is connected with a power supply cathode of the first rotary encoder, the eighth pin of the first rotary encoder terminal 5a is connected with a shielding wire of the first rotary encoder, the ninth pin of the first rotary encoder terminal 5a is connected with a pulse output A of the first rotary encoder, and the tenth pin of the first rotary encoder terminal 5a is connected with a pulse output B of the first rotary encoder Connecting; the first pin of the two rotary encoder terminals 5b is connected with the input pin of X4 of the PLC control module 2, the second pin of the two rotary encoder terminals 5b is connected with the input pin of X3 of the PLC control module 2, the fourth pin of the two rotary encoder terminals 5b is connected with a neutral wire N24, the fifth pin of the two rotary encoder terminals 5b is connected with a live wire L24, the sixth pin of the two rotary encoder terminals 5b is connected with the power supply positive pole of the second rotary encoder, the seventh pin of the two rotary encoder terminals 5b is connected with the negative pole of the power supply of the second rotary encoder, the eighth pin of the two rotary encoder terminals 5b is connected to the shield wire of the second rotary encoder, the ninth pin of the two rotary encoder terminals 5b is connected to the pulse output a of the second rotary encoder, a tenth pin of the two rotary encoder terminals 5B is connected with a pulse output B of the second rotary encoder;
the first relay module comprises a KA1 intermediate relay, a KA2 intermediate relay, a KA3 intermediate relay, a KA4 intermediate relay, a KA5 intermediate relay and a KA6 intermediate relay, the KA1 intermediate relay, the KA2 intermediate relay, the KA3 intermediate relay, the KA4 intermediate relay, the KA5 intermediate relay and the KA6 intermediate relay all comprise a chip M1 and a chip M2, a fifth pin of the KA1 intermediate relay is connected with a neutral line N24, a sixth pin of the KA1 intermediate relay is connected with a live line L24, a seventh pin of the KA1 intermediate relay is connected with a Y10 output pin of the PLC control module 2, a fifth pin of the KA2 intermediate relay is connected with a neutral line N24, a sixth pin of the KA2 intermediate relay is connected with a live line L24, a seventh pin of the KA2 intermediate relay is connected with a Y11 output pin of the PLC control module 2, a fifth pin of the KA3 intermediate relay is connected with a neutral line N24, the sixth pin of the KA3 intermediate relay is connected with a live wire L24, the seventh pin of the KA3 intermediate relay is connected with the Y12 output pin of the PLC control module 2, the fifth pin of the KA4 intermediate relay is connected with a zero line N24, the sixth pin of the KA4 intermediate relay is connected with a live line L24, the seventh pin of the KA4 intermediate relay is connected with the Y13 output pin of the PLC control module 2, the fifth pin of the KA5 intermediate relay is connected with a zero line N24, the sixth pin of the KA5 intermediate relay is connected with a live line L24, the seventh pin of the KA5 intermediate relay is connected with the Y14 output pin of the PLC control module 2, the fifth pin of the KA6 intermediate relay is connected with a zero line N24, the sixth pin of the KA6 intermediate relay is connected with a live line L24, and a seventh pin of the KA6 intermediate relay is connected with a Y15 output pin of the PLC control module 2.
The relay positive and negative control output terminal bank group comprises a first relay positive and negative control output terminal 6a, a second relay positive and negative control output terminal 6b and a third relay positive and negative control output terminal 6c, and the relay positive and negative control output module (not shown in the figure) comprises a first electric push rod, a second electric push rod and a third electric push rod; the first pin of the first relay positive and negative control output terminal 6a is connected with the third pin of the KA1 intermediate relay and the third pin of the KA2 intermediate relay, the second pin of the first relay positive and negative control output terminal 6a is connected with the fourth pin of the KA1 intermediate relay and the fourth pin of the KA2 intermediate relay, the third pin of the first relay positive and negative control output terminal 6a is connected with the power supply anode of the first electric push rod, the fourth pin of the first relay positive and negative control output terminal 6a is connected with the power supply cathode of the first electric push rod, and the positive and negative rotation control of the first electric push rod can be realized by combining an interlocking program; the first pin of the second relay positive and negative control output terminal 6b is connected with the third pin of the KA3 intermediate relay and the third pin of the KA4 intermediate relay, the second pin of the second relay positive and negative control output terminal 6b is connected with the fourth pin of the KA3 intermediate relay and the fourth pin of the KA4 intermediate relay, the third pin of the second relay positive and negative control output terminal 6b is connected with the power supply anode of the second electric push rod, the fourth pin of the second relay positive and negative control output terminal 6b is connected with the power supply cathode of the second electric push rod, and the positive and negative rotation control of the second electric push rod can be realized by combining an interlocking program; the first pin of the positive and negative control output terminal 6c of the third relay is connected with the third pin of the KA5 intermediate relay and the third pin of the KA6 intermediate relay, the second pin of the positive and negative control output terminal 6c of the third relay is connected with the fourth pin of the KA5 intermediate relay and the fourth pin of the KA6 intermediate relay, the third pin of the positive and negative control output terminal 6c of the third relay is connected with the power supply anode of the third electric push rod, the fourth pin of the positive and negative control output terminal 6c of the third relay is connected with the power supply cathode of the third electric push rod, and the positive and negative rotation control of the third electric push rod can be realized by combining an interlocking program.
The second relay module comprises a KA7 intermediate relay, a KA8 intermediate relay, a KA9 intermediate relay, a KA10 intermediate relay, a KA11 intermediate relay, a KA12 intermediate relay, a KA13 intermediate relay, a KA14 intermediate relay and a KA15 intermediate relay, the KA7 intermediate relay and the KA7 intermediate relay all comprise an M7 chip and an M7 chip, a third pin of the KA7 intermediate relay is connected with a live wire L7, a seventh pin of the KA7 intermediate relay is connected with a Y7 output pin of the PLC control module 2, a third pin of the KA7 intermediate relay is connected with a live wire L7, a seventh pin of the 7 intermediate relay is connected with a Y7 output pin of the PLC control module 2, a third pin of the KA7 intermediate relay is connected with a live wire L7, a seventh pin of the KA9 intermediate relay is connected with a Y20 output pin of the PLC control module 2, a third pin of the KA10 intermediate relay is connected with a live wire L24, a seventh pin of the KA10 intermediate relay is connected with a Y21 output pin of the PLC control module 2, a third pin of the KA11 intermediate relay is connected with a live wire L24, a seventh pin of the KA11 intermediate relay is connected with a Y22 output pin of the PLC control module 2, a third pin of the KA12 intermediate relay is connected with a live wire L24, a seventh pin of the KA12 intermediate relay is connected with a Y23 output pin of the PLC control module 2, a third pin of the KA13 intermediate relay is connected with a live wire L24, a seventh pin of the KA13 intermediate relay is connected with a Y24 output pin of the PLC control module 2, a third pin of the KA14 intermediate relay is connected with a live wire L24, a seventh pin of the KA14 intermediate relay is connected with a Y25 output pin of the PLC control module 2, a third pin of the KA15 intermediate relay is connected with a live wire L24, a seventh pin of the KA15 intermediate relay is connected with a Y26 output pin of the PLC control module 2, a fifth pin of the KA15 intermediate relay is connected with a one-way valve on-off terminal 9, a fourth pin of the one-way valve on-off terminal 9 is connected with a zero line N24 and used for controlling the digital proportional amplifier module and the one-way valve on-off module, the digital proportional amplifier module can control the proportional directional flow valve, so that the hydraulic output flow value is controlled, the speed of an execution part hydraulic cylinder and a hydraulic motor is adjusted, and the one-way valve on-off module can realize switching of oil supply and oil discharge states of a hydraulic system;
the digital proportional amplifier terminal bank includes a first digital proportional amplifier terminal 8a, a second digital proportional amplifier terminal 8b, a third digital proportional amplifier terminal 8c, a fourth digital proportional amplifier terminal 8d, a fifth digital proportional amplifier terminal 8e, a sixth digital proportional amplifier terminal 8f, a seventh digital proportional amplifier terminal 8g, and an eighth digital proportional amplifier terminal 8h, the digital proportional amplifier module (not shown in the figure) comprises a first digital proportional amplifier, a second digital proportional amplifier, a third digital proportional amplifier and a fourth digital proportional amplifier, the digital proportional amplifier module comprises a chip L1 for driving a proportional valve to act in a forward direction and a chip L2 for driving the proportional valve to act in a reverse direction, the model of the chip L1 of the digital proportional amplifier DPA is ADF-11FBD2-2-50, and the model of the chip L2 is ADF-11FBD 2-2-50; a first pin of the first digital proportional amplifier terminal 8a is connected with an I-pin of a first channel CH31 of the first analog output module 3, a second pin of the first digital proportional amplifier terminal 8a is connected with a VI + pin of a first channel CH31 of the first analog output module 3, a fourth pin of the first digital proportional amplifier terminal 8a is connected with a zero line N24, a fifth pin of the first digital proportional amplifier terminal 8a is connected with a fifth pin of the KA7 intermediate relay, a sixth pin of the first digital proportional amplifier terminal 8a is connected with a first power positive electrode of the first digital proportional amplifier, a seventh pin of the first digital proportional amplifier terminal 8a is connected with a first power negative electrode of the first digital proportional amplifier, an eighth pin of the first digital proportional amplifier terminal 8a is connected with a first input reference voltage end of the first digital proportional amplifier, the ninth pin of the first digital proportional amplifier terminal 8a is connected with the first input signal positive pole of the first digital proportional amplifier, the tenth pin of the first digital proportional amplifier terminal 8a is connected with the first input signal negative pole of the first digital proportional amplifier, the first pin of the second digital proportional amplifier terminal 8b is connected with the I-pin of the first channel CH41 of the second analog output module 4, the second pin of the second digital proportional amplifier terminal 8b is connected with the VI + pin of the first channel CH41 of the second analog output module 4, the fourth pin of the second digital proportional amplifier terminal 8b is connected with the neutral line N24, the fifth pin of the second digital proportional amplifier terminal 8b is connected with the fifth pin of the KA8 intermediate relay, the sixth pin of the second digital proportional amplifier terminal 8b is connected with the second power supply positive pole of the first digital proportional amplifier, a seventh pin of the second digital proportional amplifier terminal 8b is connected to a second power supply negative electrode of the first digital proportional amplifier, an eighth pin of the second digital proportional amplifier terminal 8b is connected to a second input reference voltage terminal of the first digital proportional amplifier, a ninth pin of the second digital proportional amplifier terminal 8b is connected to a second input signal positive electrode of the first digital proportional amplifier, a tenth pin of the second digital proportional amplifier terminal 8b is connected to a second input signal negative electrode of the first digital proportional amplifier, a first pin of the third digital proportional amplifier terminal 8c is connected to an I-pin of the second channel CH32 of the first analog quantity output module 3, a second pin of the third digital proportional amplifier terminal 8c is connected to a VI + pin of the second channel CH32 of the first analog quantity output module 3, a fourth pin of the third digital proportional amplifier terminal 8c is connected with a zero line N24, a fifth pin of the third digital proportional amplifier terminal 8c is connected with a fifth pin of a KA9 intermediate relay, a sixth pin of the third digital proportional amplifier terminal 8c is connected with a first power supply positive electrode of a second digital proportional amplifier, a seventh pin of the third digital proportional amplifier terminal 8c is connected with a first power supply negative electrode of the second digital proportional amplifier, an eighth pin of the third digital proportional amplifier terminal 8c is connected with a first input reference voltage end of the second digital proportional amplifier, a ninth pin of the third digital proportional amplifier terminal 8c is connected with a first input signal positive electrode of the second digital proportional amplifier, a tenth pin of the third digital proportional amplifier terminal 8c is connected with a first input signal negative electrode of the second digital proportional amplifier, a first pin of the fourth digital proportional amplifier terminal 8d is connected with an I-pin of the second channel CH42 of the second analog output module 4, a second pin of the fourth digital proportional amplifier terminal 8d is connected with a VI + pin of the second channel CH42 of the second analog output module 4, a fourth pin of the fourth digital proportional amplifier terminal 8d is connected with a zero line N24, a fifth pin of the fourth digital proportional amplifier terminal 8d is connected with a fifth pin of the KA10 intermediate relay, a sixth pin of the fourth digital proportional amplifier terminal 8d is connected with a second power positive electrode of the second digital proportional amplifier, a seventh pin of the fourth digital proportional amplifier terminal 8d is connected with a second power negative electrode of the second digital proportional amplifier, an eighth pin of the fourth digital proportional amplifier terminal 8d is connected with a second input reference voltage terminal of the second digital proportional amplifier, a ninth pin of the fourth digital proportional amplifier terminal 8d is connected with a second input signal anode of the second digital proportional amplifier, a tenth pin of the fourth digital proportional amplifier terminal 8d is connected with a second input signal cathode of the second digital proportional amplifier, a first pin of the fifth digital proportional amplifier terminal 8e is connected with an I-pin of a third channel CH33 of the first analog quantity output module 3, a second pin of the fifth digital proportional amplifier terminal 8e is connected with a VI + pin of a third channel CH33 of the first analog quantity output module 3, a fourth pin of the fifth digital proportional amplifier terminal is connected with a neutral line N24, a fifth pin of the fifth digital proportional amplifier terminal 8e is connected with a fifth pin of a KA11 intermediate relay, a sixth pin of the fifth digital proportional amplifier terminal 8e is connected with a first power supply anode of the third digital proportional amplifier, a seventh pin of the fifth digital proportional amplifier terminal 8e is connected to a first power supply negative electrode of a third digital proportional amplifier, an eighth pin of the fifth digital proportional amplifier terminal 8e is connected to a first input reference voltage end of the third digital proportional amplifier, a ninth pin of the fifth digital proportional amplifier terminal 8e is connected to a first input signal positive electrode of the third digital proportional amplifier, a tenth pin of the fifth digital proportional amplifier terminal 8e is connected to a first input signal negative electrode of the third digital proportional amplifier, a first pin of the sixth digital proportional amplifier terminal 8f is connected to an I-pin of a third channel CH43 of the second analog quantity output module 4, a second pin of the sixth digital proportional amplifier terminal 8f is connected to a VI + pin of a third channel CH43 of the second analog quantity output module 4, a fourth pin of the sixth digital proportional amplifier 8f is connected to a zero line N24, a fifth pin of the sixth digital proportional amplifier 8f is connected to a fifth pin of the KA12 intermediate relay, a sixth pin of the sixth digital proportional amplifier 8f is connected to a second power supply positive electrode of the third digital proportional amplifier, a seventh pin of the sixth digital proportional amplifier 8f is connected to a second power supply negative electrode of the third digital proportional amplifier, an eighth pin of the sixth digital proportional amplifier 8f is connected to a second input reference voltage end of the third digital proportional amplifier, a ninth pin of the sixth digital proportional amplifier 8f is connected to a second input signal positive electrode of the third digital proportional amplifier, a tenth pin of the sixth digital proportional amplifier 8f is connected to a second input signal negative electrode of the third digital proportional amplifier, a first pin of a seventh digital proportional amplifier terminal 8g is connected to a fourth analog quantity output module 3 An I-pin of a channel CH34 is connected, a second pin of a seventh digital proportional amplifier terminal 8g is connected with a VI + pin of a fourth channel CH34 of the first analog quantity output module 3, a fourth pin of the seventh digital proportional amplifier terminal 8g is connected with a zero line N24, a fifth pin of the seventh digital proportional amplifier terminal 8g is connected with a fifth pin of a KA13 intermediate relay, a sixth pin of the seventh digital proportional amplifier terminal 8g is connected with a first power supply positive electrode of a fourth digital proportional amplifier, a seventh pin of the seventh digital proportional amplifier terminal 8g is connected with a first power supply negative electrode of the fourth digital proportional amplifier, an eighth pin of the seventh digital proportional amplifier terminal 8g is connected with a first input reference voltage end of the fourth digital proportional amplifier, a ninth pin of the seventh digital proportional amplifier terminal 8g is connected with a first input signal positive electrode of the fourth digital proportional amplifier, a tenth pin of the seventh digital proportional amplifier terminal 8g is connected with a first input signal cathode of a fourth digital proportional amplifier, a first pin of the eighth digital proportional amplifier terminal 8h is connected with an I-pin of a fourth channel CH44 of the second analog output module 4, a second pin of the eighth digital proportional amplifier terminal 8h is connected with a VI + pin of a fourth channel CH44 of the second analog output module 4, a fourth pin of the eighth digital proportional amplifier terminal 8h is connected with a zero line N24, a fifth pin of the eighth digital proportional amplifier terminal 8h is connected with a fifth pin of a KA14 intermediate relay, a sixth pin of the eighth digital proportional amplifier terminal 8h is connected with a second power supply anode of the fourth digital proportional amplifier, a seventh pin of the eighth digital proportional amplifier terminal 8h is connected with a second power supply cathode of the fourth digital proportional amplifier, an eighth pin of the eighth digital proportional amplifier terminal 8h is connected with a second input reference voltage end of the fourth digital proportional amplifier, a ninth pin of the eighth digital proportional amplifier terminal 8h is connected with a second input signal anode of the fourth digital proportional amplifier, and a tenth pin of the eighth digital proportional amplifier terminal 8h is connected with a second input signal cathode of the fourth digital proportional amplifier; the first channel CH31 of the first analog output module 3 and the first channel CH41 of the second analog output module 4 complete the signal quantity assignment to the first digital proportional amplifier, the second channel CH32 of the first analog output module 3 and the second channel CH42 of the second analog output module 4 complete the signal quantity assignment to the second digital proportional amplifier, the third channel CH33 of the first analog output module 3 and the third channel CH43 of the second analog output module 4 complete the signal quantity assignment to the third digital proportional amplifier, the fourth channel CH34 of the first analog output module 3 and the fourth channel CH44 of the second analog output module 4 complete the signal quantity assignment to the fourth digital proportional amplifier, so as to complete the proportional valve flow value adjustment, and complete the forward and reverse rotation and speed value control of each external load hydraulic motor.
When the system is powered on and in a running state, if the remote control end of the first upper computer module 1 transmits a trigger signal, the receiving end of the first upper computer module 1 can be triggered to respond:
when the first output unit T1 of the first upper computer module 1 is switched on, the input pin X10 of the PLC control module is triggered to be powered on, through an internal program of the PLC control module, a signal is output from the output pin Y14 of the PLC control module, the chip M1 of the KA1 intermediate relay is controlled to be powered on, the chip M2 of the KA1 intermediate relay is driven to be closed, so that a closing signal is output from the positive and negative control output terminal 6a of the first relay, and the first electric push rod is controlled to extend and move;
when the second output unit T2 of the first upper computer module 1 is switched on, the input pin X11 of the PLC control module is triggered to be powered on, and through an internal program of the PLC control module, a signal is output from the output pin Y15 of the PLC control module, the chip M1 of the KA2 intermediate relay is controlled to be powered on, the chip M2 of the KA2 intermediate relay is driven to be closed, so that a closing signal is output from the positive and negative control output terminal 6a of the first relay, and the first electric push rod is controlled to move in a shortened mode;
when the third output unit T3 of the first upper computer module 1 is switched on, the input pin X12 of the PLC control module is triggered to get power, and through an internal program of the PLC control module, a signal is output from the output pin Y12 of the PLC control module, the chip M1 of the KA3 intermediate relay is controlled to get power, the chip M2 of the KA3 intermediate relay is driven to be closed, so that a closing signal is output from the positive and negative control output terminal 6b of the second relay, and the second electric push rod is controlled to extend and move;
when the fourth output unit T4 of the first upper computer module 1 is turned on, the input pin X13 of the PLC control module is triggered to get power, and through an internal program of the PLC control module, a signal is output from the output pin Y13 of the PLC control module, the chip M1 of the KA4 intermediate relay is controlled to get power, the chip M2 of the KA4 intermediate relay is driven to be closed, so that a closing signal is output from the positive and negative control output terminal 6b of the second relay, and the second electric push rod is controlled to move in a shortened mode;
when the fifth output unit T5 of the first upper computer module 1 is turned on, the input pin X14 of the PLC control module is triggered to get power, and through an internal program of the PLC control module, a signal is output from the output pin Y10 of the PLC control module, the chip M1 of the KA5 intermediate relay is controlled to get power, the chip M2 of the KA5 intermediate relay is driven to be closed, so that a closing signal is output from the positive and negative control output terminal 6c of the third relay, and the third electric push rod is controlled to extend and move;
when the sixth output unit T6 of the first upper computer module 1 is turned on, the input pin X15 of the PLC control module is triggered to get power, and through an internal program of the PLC control module, a signal is output from the output pin Y11 of the PLC control module, the chip M1 of the KA6 intermediate relay is controlled to get power, the chip M2 of the KA6 intermediate relay is driven to be closed, so that a closing signal is output from the positive and negative control output terminal 6c of the third relay, and the third electric push rod is controlled to move in a shortened manner;
when the fifteenth output unit T15 of the first upper computer module 1 is switched on, an input pin X26 of the PLC control module is triggered to be powered on, signals are output from an output pin Y26 of the PLC control module through an internal program of the PLC control module, a chip M1 of the KA15 intermediate relay is controlled to be powered on, a chip M2 of the KA15 intermediate relay is driven to be closed, so that a closing signal is output from the one-way valve on-off terminal 9, the one-way valve is controlled to be opened, and the hydraulic station performs oil supply output;
when the sixteenth output unit T16 of the first upper computer module 1 is switched on, an input pin X27 of the PLC control module is triggered to be powered on, signals are output from an output pin Y26 of the PLC control module through an internal program of the PLC control module, the chip M1 of the KA15 intermediate relay is controlled to be powered off, and the chip M2 of the KA15 intermediate relay is driven to reset, so that a disconnection signal is output from a one-way valve on-off terminal 9, the one-way valve is controlled to be closed, the hydraulic station stops oil supply, and the hydraulic station is in a non-pressure-difference oil return state;
when the seventh output unit T7 of the first upper computer module 1 is turned on, the input pin X16 of the PLC control module is triggered to get power, and through an internal program of the PLC control module, a signal is output from the output pin Y16 of the PLC control module, the chip M1 of the KA7 intermediate relay is controlled to get power, the chip M2 of the KA7 intermediate relay is driven to be closed, so that a closing signal is output from the first digital proportional amplifier terminal 8a, the forward motion chip L1 of the first digital proportional amplifier is controlled, and at this time, a signal of the first channel CH1 of the first analog output module 3 is output from the first digital proportional amplifier terminal 8 a; controlling the first hydraulic motor to rotate forward and control the speed;
when the eighth output unit T8 of the first upper computer module 1 is turned on, the input pin X17 of the PLC control module is triggered to get power, and through an internal program of the PLC control module, a signal is output from the output pin Y17 of the PLC control module, the chip M1 of the KA8 intermediate relay is controlled to get power, the chip M2 of the KA8 intermediate relay is driven to be closed, so that a closed signal is output from the second digital proportional amplifier terminal 8b, the reverse action chip L2 of the first digital proportional amplifier is controlled, and at this time, the signal of the first channel CH1 of the second analog output module 4 is output from the second digital proportional amplifier terminal 8b, and the reverse control speed of the first hydraulic motor is controlled;
when the ninth output unit T9 of the first upper computer module 1 is turned on, the input pin X20 of the PLC control module is triggered to get power, and through an internal program of the PLC control module, a signal is output from the output pin Y20 of the PLC control module, and the chip M1 of the KA9 intermediate relay is controlled to get power, so that the chip M2 of the KA9 intermediate relay is driven to be closed, so that a closing signal is output from the third digital proportional amplifier terminal 8c, and the forward motion chip L1 of the second digital proportional amplifier is controlled, and at this time, a signal of the second channel CH2 of the first analog output module 3 is output from the third digital proportional amplifier terminal 8c, and the forward control speed of the second hydraulic motor is controlled;
when the tenth output unit T10 of the first upper computer module 1 is turned on, the input pin X21 of the PLC control module is triggered to get power, and through an internal program of the PLC control module, a signal is output from the output pin Y21 of the PLC control module, and the chip M1 of the KA10 intermediate relay is controlled to get power, so that the chip M2 of the KA10 intermediate relay is driven to be closed, so that a closing signal is output from the fourth digital proportional amplifier terminal 8d, and the reverse action chip L2 of the second digital proportional amplifier is controlled, and at this time, a signal of the second channel CH2 of the second analog output module 4 is output from the fourth digital proportional amplifier terminal 8d, and the reverse control speed of the second hydraulic motor is controlled;
when the eleventh output unit T11 of the first upper computer module 1 is turned on, the input pin X22 of the PLC control module is triggered to get power, and through an internal program of the PLC control module, a signal is output from the output pin Y22 of the PLC control module, the chip M1 of the KA11 intermediate relay is controlled to get power, and the chip M2 of the KA11 intermediate relay is driven to close, so that a closing signal is output from the fifth digital proportional amplifier terminal 8e, and the forward motion chip L1 of the third digital proportional amplifier is controlled, at this time, a signal of the third channel CH3 of the first analog output module 3 is output from the fifth digital proportional amplifier terminal 8e, and the forward control speed of the third hydraulic motor is controlled;
when the twelfth output unit T12 of the first upper computer module 1 is turned on, the input pin X23 of the PLC control module is triggered to get power, and through an internal program of the PLC control module, a signal is output from the output pin Y23 of the PLC control module, and the chip M1 of the KA12 intermediate relay is controlled to get power, so that the chip M2 of the KA12 intermediate relay is driven to close, so that a closing signal is output from the sixth digital proportional amplifier terminal 8f, and the reverse action chip L2 of the third digital proportional amplifier is controlled, and at this time, when a signal of the third channel CH3 of the second analog output module 4 is output from the sixth digital proportional amplifier terminal 8f, the reverse speed control of the third hydraulic motor is controlled;
when the thirteenth output unit T13 of the first upper computer module 1 is turned on, the input pin X24 of the PLC control module is triggered to get power, and through an internal program of the PLC control module, a signal is output from the output pin Y24 of the PLC control module, the chip M1 of the KA13 intermediate relay is controlled to get power, and the chip M2 of the KA13 intermediate relay is driven to be closed, so that a closing signal is output from the seventh digital proportional amplifier terminal 8g, and the forward motion chip L1 of the fourth digital proportional amplifier is controlled, at this time, a signal of the fourth channel CH4 of the first analog output module 3 is output from the seventh digital proportional amplifier terminal 8g, and the forward control speed of the fourth hydraulic motor is controlled;
when the fourteenth output unit T14 of the first upper computer module 1 is turned on, the input pin X25 of the PLC control module is triggered to get power, and through an internal program of the PLC control module, a signal is output from the output pin Y25 of the PLC control module, the chip M1 of the KA14 intermediate relay is controlled to get power, the chip M2 of the KA14 intermediate relay is driven to be closed, so that a closing signal is output from the eighth digital proportional amplifier terminal 8h, and the reverse action chip L2 of the fourth control digital proportional amplifier is controlled, at this time, a signal of the fourth channel CH4 of the second analog quantity output module 4 is output from the eighth digital proportional amplifier terminal 8h, and the reverse control speed of the fourth hydraulic motor is controlled;
in the program, an input pin X10 of the PLC control module is interlocked with X11, an input pin X12 of the PLC control module is interlocked with X13, an input pin X14 of the PLC control module is interlocked with X15, an input pin X16 of the PLC control module is self-locked and interlocked with X17, an input pin X20 of the PLC control module is self-locked and interlocked with X21, an input pin X22 of the PLC control module is self-locked and interlocked with X23, and an input pin X24 of the PLC control module is self-locked and interlocked with X25.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that variations based on the shape and principle of the present invention should be covered within the scope of the present invention.

Claims (10)

1. The utility model provides an agricultural small-size hydraulic pressure station control system which characterized in that: the device comprises a direct-current power supply module, a voltage stabilizing module, a live wire, a zero line, a first upper computer module, a second upper computer module, a PLC (programmable logic controller) control module, a first relay module, a second relay module, a first analog quantity output module, a second analog quantity output module, a relay positive and negative control output terminal bank, a rotary encoder terminal bank, a digital proportional amplifier terminal bank, a one-way valve on-off terminal, a one-way valve on-off module, a relay positive and negative control output module, a rotary encoder module and a digital proportional amplifier module; wherein, the direct current power module is electrically connected with the voltage stabilizing module, the output end of the voltage stabilizing module is respectively electrically connected with a live wire and a null wire, the input power positive pole and the input power negative pole of the first upper computer module, the second upper computer module, the PLC control module, the first analog quantity output module and the second analog quantity output module are respectively electrically connected with the null wire and the live wire through fuses, the first upper computer module is electrically connected with the PLC control module, the second upper computer module is electrically connected with the PLC control module, the PLC control module is electrically connected with the rotary encoder terminal bank, the first analog quantity output module is electrically connected with the PLC control module through a communication cable and is electrically connected with the digital proportional amplifier terminal bank, the second analog quantity output module is electrically connected with the first analog quantity output module through a communication cable and is electrically connected with the digital proportional amplifier terminal bank, the relay positive and negative control output terminal row group is connected with the PLC control module through a first relay module, and this first relay module is connected with zero line and live wire electricity, relay positive and negative control output module is connected with relay positive and negative control output terminal row group electricity, digital proportional amplifier terminal row group and check valve break-make terminal are connected with the zero line electricity respectively, and digital proportional amplifier terminal row group and check valve break-make terminal all are connected with the PLC control module electricity through a second relay module, the second relay module is connected with the live wire electricity, check valve break-make terminal is connected with check valve break-make module electricity, digital proportional amplifier module and digital proportional amplifier terminal row group electricity are connected, rotary encoder terminal row group is connected with zero line, live wire electricity and rotary encoder module electricity respectively.
2. The agricultural small hydraulic station control system of claim 1, wherein: the COM1 pin and the NC1 pin of the first upper computer module form a first output unit, the COM2 pin and the NC2 pin of the first upper computer module form a second output unit, the COM3 pin and the NC3 pin of the first upper computer module form a third output unit, the COM4 pin and the NC4 pin of the first upper computer module form a fourth output unit, the COM5 pin and the NC5 pin of the first upper computer module form a fifth output unit, the COM6 pin and the NC6 pin of the first upper computer module form a sixth output unit, the COM7 pin and the NC7 pin of the first upper computer module form a seventh output unit, the COM8 pin and the NC8 pin of the first upper computer module form an eighth output unit, the COM9 pin and the NC9 pin of the first upper computer module form a ninth output unit, the COM10 pin and the NC10 pin of the first upper computer module form a tenth output unit, the COM11 pin and the NC11 pin of the first upper computer module form an eleventh output unit, the COM12 pin and the NC12 pin of the first upper computer module form a twelfth output unit, the COM13 pin and the NC13 pin of the first upper computer module form a thirteenth output unit, the COM14 pin and the NC14 pin of the first upper computer module form a fourteenth output unit, the COM15 pin and the NC15 pin of the first upper computer module form a fifteenth output unit, and the COM16 pin and the NC16 pin of the first upper computer module form a sixteenth output unit; an NC1 pin of the first upper computer module is connected with an X10 input pin of the PLC control module, an NC2 pin of the first upper computer module is connected with an X11 input pin of the PLC control module, an NC3 pin of the first upper computer module is connected with an X12 input pin of the PLC control module, an NC4 pin of the first upper computer module is connected with an X13 input pin of the PLC control module, an NC5 pin of the first upper computer module is connected with an X14 input pin of the PLC control module, an NC6 pin of the first upper computer module is connected with an X15 input pin of the PLC control module, an NC7 pin of the first upper computer module is connected with an X16 input pin of the PLC control module, an NC8 pin of the first upper computer module is connected with an X17 input pin of the PLC control module, an NC6 pin of the first upper computer module is connected with an X20 input pin of the PLC control module, and an NC8 pin of the first upper computer module is connected with an X21 input pin of the PLC control module, the NC11 pin of the first upper computer module is connected with an X22 input pin of the PLC control module, an NC12 pin of the first upper computer module is connected with an X23 input pin of the PLC control module, an NC13 pin of the first upper computer module is connected with an X24 input pin of the PLC control module, an NC14 pin of the first upper computer module is connected with an X25 input pin of the PLC control module, an NC15 pin of the first upper computer module is connected with an X26 input pin of the PLC control module, and an NC16 pin of the first upper computer module is connected with an X27 input pin of the PLC control module.
3. The agricultural small hydraulic station control system of claim 1, wherein: an X6 input pin of the PLC control module is connected with a first switch, an X7 input pin of the PLC control module is connected with a second switch, a 0V end input pin of the PLC control module is respectively connected with the first switch, the second switch, a COM1 pin, a COM2 pin, a COM3 pin, a COM4 pin, a COM5 pin, a COM6 pin, a COM7 pin, a COM8 pin, a COM9 pin, a COM10 pin, a COM11 pin, a COM12 pin, a COM13 pin, a COM14 pin, a COM15 pin and a COM16 pin, an S/S end input pin of the PLC control module is connected with a 24V end input pin of the PLC control module, and COM1, 2, COM3, COM4 and COM5 output pins of the PLC control module are connected with a zero line.
4. The agricultural small hydraulic station control system of claim 1, wherein: the rotary encoder terminal row group comprises a first rotary encoder terminal and a second rotary encoder terminal, and the rotary encoder module comprises a first rotary encoder and a second rotary encoder; the first pin of the first rotary encoder terminal is connected with the X1 input pin of the PLC control module, the second pin of the first rotary encoder terminal is connected with the X0 input pin of the PLC control module, the fourth pin of the first rotary encoder terminal is connected with a zero line, the fifth pin of the first rotary encoder terminal is connected with a live line, the sixth pin of the first rotary encoder terminal is connected with the power supply positive pole of the first rotary encoder, the seventh pin of the first rotary encoder terminal is connected with the power supply negative pole of the first rotary encoder, the eighth pin of the first rotary encoder terminal is connected with the shielded wire of the first rotary encoder, the ninth pin of the first rotary encoder terminal is connected with the pulse output A of the first rotary encoder, the tenth pin of the first rotary encoder terminal is connected with the pulse output B of the first rotary encoder; the first pin of the second rotary encoder terminal is connected with the X4 input pin of the PLC control module, the second pin of the second rotary encoder terminal is connected with the X3 input pin of the PLC control module, a fourth pin of the second rotary encoder terminal is connected with a zero line, a fifth pin of the second rotary encoder terminal is connected with a live line, the sixth pin of the second rotary encoder terminal is connected with the power supply positive pole of the second rotary encoder, the seventh pin of the second rotary encoder terminal is connected with the negative pole of the power supply of the second rotary encoder, the eighth pin of the second rotary encoder terminal is connected with the shielded wire of the second rotary encoder, the ninth pin of the second rotary encoder terminal is connected with the pulse output A of the second rotary encoder, and the tenth pin of the second rotary encoder terminal is connected with the pulse output B of the second rotary encoder.
5. The agricultural small hydraulic station control system of claim 1, wherein: the first relay module comprises a KA1 intermediate relay, a KA2 intermediate relay, a KA3 intermediate relay, a KA4 intermediate relay, a KA5 intermediate relay and a KA6 intermediate relay, a fifth pin of the KA1 intermediate relay is connected with a zero line, a sixth pin of the KA1 intermediate relay is connected with a live line, a seventh pin of the KA1 intermediate relay is connected with a Y10 output pin of the PLC control module, a fifth pin of the KA2 intermediate relay is connected with a zero line, a sixth pin of the KA2 intermediate relay is connected with a live line, a seventh pin of the KA2 intermediate relay is connected with a Y11 output pin of the PLC control module, a fifth pin of the KA3 intermediate relay is connected with a zero line, a sixth pin of the KA3 intermediate relay is connected with a live line, a seventh pin of the KA3 intermediate relay is connected with a Y12 output pin of the PLC control module, a fifth pin of the 4 intermediate relay is connected with a zero line, the sixth pin of KA4 auxiliary relay is connected with the live wire, the seventh pin of KA4 auxiliary relay is connected with PLC control module's Y13 output pin, the fifth pin of KA5 auxiliary relay is connected with the zero line, the sixth pin of KA5 auxiliary relay is connected with the live wire, the seventh pin of KA5 auxiliary relay is connected with PLC control module's Y14 output pin, the fifth pin of KA6 auxiliary relay is connected with the zero line, the sixth pin of KA6 auxiliary relay is connected with the live wire, the seventh pin of KA6 auxiliary relay is connected with PLC control module's Y15 output pin.
6. The agricultural small hydraulic station control system of claim 1, wherein: the relay positive and negative control output terminal bank group comprises a first relay positive and negative control output terminal, a second relay positive and negative control output terminal and a third relay positive and negative control output terminal, and the relay positive and negative control output module comprises a first electric push rod, a second electric push rod and a third electric push rod; the first pin of the positive and negative control output terminal of the first relay is connected with the third pin of the KA1 intermediate relay of the first relay module and the third pin of the KA2 intermediate relay of the first relay module, the second pin of the positive and negative control output terminal of the first relay is connected with the fourth pin of the KA1 intermediate relay of the first relay module and the fourth pin of the KA2 intermediate relay of the first relay module, the third pin of the positive and negative control output terminal of the first relay is connected with the power supply positive pole of the first electric push rod, and the fourth pin of the positive and negative control output terminal of the first relay is connected with the power supply negative pole of the first electric push rod; the first pin of the positive and negative control output terminal of the second relay is connected with the third pin of the KA3 intermediate relay of the first relay module and the third pin of the KA4 intermediate relay of the first relay module, the second pin of the positive and negative control output terminal of the second relay is connected with the fourth pin of the KA3 intermediate relay of the first relay module and the fourth pin of the KA4 intermediate relay of the first relay module, the third pin of the positive and negative control output terminal of the second relay is connected with the power supply positive pole of the second electric push rod, and the fourth pin of the positive and negative control output terminal of the second relay is connected with the power supply negative pole of the second electric push rod; the first pin of the positive and negative control output terminal of the third relay is connected with the third pin of the KA5 intermediate relay of the first relay module and the third pin of the KA6 intermediate relay of the first relay module, the second pin of the positive and negative control output terminal of the third relay is connected with the fourth pin of the KA5 intermediate relay of the first relay module and the fourth pin of the KA6 intermediate relay of the first relay module, the third pin of the positive and negative control output terminal of the third relay is connected with the power supply anode of the third electric push rod, and the fourth pin of the positive and negative control output terminal of the third relay is connected with the power supply cathode of the third electric push rod.
7. The agricultural small hydraulic station control system of claim 1, wherein: the second relay module comprises a KA7 intermediate relay, a KA8 intermediate relay, a KA9 intermediate relay, a KA10 intermediate relay, a KA11 intermediate relay, a KA12 intermediate relay, a KA13 intermediate relay, a KA14 intermediate relay and a KA15 intermediate relay, a third pin of the KA7 intermediate relay is connected with the live wire, a seventh pin of the KA7 intermediate relay is connected with a Y16 output pin of the PLC control module, a third pin of the KA8 intermediate relay is connected with the live wire, a seventh pin of the KA8 intermediate relay is connected with a Y17 output pin of the PLC control module, a third pin of the KA9 intermediate relay is connected with the live wire, a seventh pin of the KA9 intermediate relay is connected with a Y20 output pin of the PLC control module, a third pin of the KA10 intermediate relay is connected with the live wire, a seventh pin of the KA10 intermediate relay is connected with a Y21 output pin of the PLC control module, the third pin of the KA11 intermediate relay is connected with the live wire, the seventh pin of the KA11 intermediate relay is connected with the Y22 output pin of the PLC control module, the third pin of the KA12 intermediate relay is connected with the live wire, the seventh pin of the KA12 intermediate relay is connected with the Y23 output pin of the PLC control module, the third pin of the KA13 intermediate relay is connected with the live wire, the seventh pin of the KA13 intermediate relay is connected with the Y24 output pin of the PLC control module, the third pin of the KA14 intermediate relay is connected with the live wire, the seventh pin of the KA14 intermediate relay is connected with the Y25 output pin of the PLC control module, the third pin of the KA15 intermediate relay is connected with the live wire, the seventh pin of the KA15 intermediate relay is connected with the Y26 output pin of the PLC control module, the fifth pin of the KA15 intermediate relay is connected with the one-way valve on-off terminal, and a fourth pin of the one-way valve on-off terminal is connected with the zero line.
8. The agricultural small hydraulic station control system of claim 1, wherein: the digital proportional amplifier terminal bank group comprises a first digital proportional amplifier terminal, a second digital proportional amplifier terminal, a third digital proportional amplifier terminal, a fourth digital proportional amplifier terminal, a fifth digital proportional amplifier terminal, a sixth digital proportional amplifier terminal, a seventh digital proportional amplifier terminal and an eighth digital proportional amplifier terminal, and the digital proportional amplifier module comprises a first digital proportional amplifier, a second digital proportional amplifier, a third digital proportional amplifier and a fourth digital proportional amplifier; the first pin of the first digital proportional amplifier terminal is connected with the I-pin of the first channel of the first analog output module, the second pin of the first digital proportional amplifier terminal is connected with the VI + pin of the first channel of the first analog output module, the fourth pin of the first digital proportional amplifier terminal is connected with the zero line, the fifth pin of the first digital proportional amplifier terminal is connected with the fifth pin of the KA7 intermediate relay, the sixth pin of the first digital proportional amplifier terminal is connected with the first power supply positive pole of the first digital proportional amplifier, the seventh pin of the first digital proportional amplifier terminal is connected with the first power supply negative pole of the first digital proportional amplifier, the eighth pin of the first digital proportional amplifier terminal is connected with the first input reference voltage end of the first digital proportional amplifier, a ninth pin of the first digital proportional amplifier terminal is connected with a first input signal anode of the first digital proportional amplifier, and a tenth pin of the first digital proportional amplifier terminal is connected with a first input signal cathode of the first digital proportional amplifier; a first pin of a second digital proportional amplifier terminal is connected with an I-pin of a first channel of a second analog output module, a second pin of the second digital proportional amplifier terminal is connected with a VI + pin of the first channel of the second analog output module, a fourth pin of the second digital proportional amplifier terminal is connected with a zero line, a fifth pin of the second digital proportional amplifier terminal is connected with a fifth pin of a KA8 intermediate relay, a sixth pin of the second digital proportional amplifier terminal is connected with a second positive electrode of a first digital proportional amplifier, a seventh pin of the second digital proportional amplifier terminal is connected with a second negative electrode of the first digital proportional amplifier, an eighth pin of the second digital proportional amplifier terminal is connected with a second input reference voltage end of the first digital proportional amplifier, a ninth pin of the second digital proportional amplifier terminal is connected with the second input signal anode of the first digital proportional amplifier, and a tenth pin of the second digital proportional amplifier terminal is connected with the second input signal cathode of the first digital proportional amplifier; a first pin of a third digital proportional amplifier terminal is connected with an I-pin of a second channel of the first analog output module, a second pin of the third digital proportional amplifier terminal is connected with a VI + pin of a second channel of the first analog output module, a fourth pin of the third digital proportional amplifier terminal is connected with a zero line, a fifth pin of the third digital proportional amplifier terminal is connected with a fifth pin of a KA9 intermediate relay, a sixth pin of the third digital proportional amplifier terminal is connected with a first power supply positive pole of the second digital proportional amplifier, a seventh pin of the third digital proportional amplifier terminal is connected with a first power supply negative pole of the second digital proportional amplifier, an eighth pin of the third digital proportional amplifier terminal is connected with a first input reference voltage end of the second digital proportional amplifier, a ninth pin of the third digital proportional amplifier terminal is connected with the first input signal anode of the second digital proportional amplifier, and a tenth pin of the third digital proportional amplifier terminal is connected with the first input signal cathode of the second digital proportional amplifier; a first pin of a fourth digital proportional amplifier terminal is connected with an I-pin of a second channel of the second analog output module, a second pin of the fourth digital proportional amplifier terminal is connected with a VI + pin of a second channel of the second analog output module, a fourth pin of the fourth digital proportional amplifier terminal is connected with a zero line, a fifth pin of the fourth digital proportional amplifier terminal is connected with a fifth pin of a KA10 intermediate relay, a sixth pin of the fourth digital proportional amplifier terminal is connected with a second positive power supply of the second digital proportional amplifier, a seventh pin of the fourth digital proportional amplifier terminal is connected with a second negative power supply of the second digital proportional amplifier, an eighth pin of the fourth digital proportional amplifier terminal is connected with a second input reference voltage end of the second digital proportional amplifier, a ninth pin of the fourth digital proportional amplifier terminal is connected with the second input signal anode of the second digital proportional amplifier, and a tenth pin of the fourth digital proportional amplifier terminal is connected with the second input signal cathode of the second digital proportional amplifier; a first pin of a fifth digital proportional amplifier terminal is connected with an I-pin of a third channel of the first analog output module, a second pin of the fifth digital proportional amplifier terminal is connected with a VI + pin of a third channel of the first analog output module, a fourth pin of the fifth digital proportional amplifier terminal is connected with a zero line, a fifth pin of the fifth digital proportional amplifier terminal is connected with a fifth pin of a KA11 intermediate relay, a sixth pin of the fifth digital proportional amplifier terminal is connected with a first power supply positive electrode of a third digital proportional amplifier, a seventh pin of the fifth digital proportional amplifier terminal is connected with a first power supply negative electrode of the third digital proportional amplifier, an eighth pin of the fifth digital proportional amplifier terminal is connected with a first input reference voltage end of the third digital proportional amplifier, a ninth pin of the fifth digital proportional amplifier terminal is connected with a first input signal anode of a third digital proportional amplifier, and a tenth pin of the fifth digital proportional amplifier terminal is connected with a first input signal cathode of the third digital proportional amplifier; a first pin of a sixth digital proportional amplifier terminal is connected with an I-pin of a third channel of a second analog output module, a second pin of the sixth digital proportional amplifier terminal is connected with a VI + pin of a third channel of a second analog output module, a fourth pin of the sixth digital proportional amplifier terminal is connected with a zero line, a fifth pin of the sixth digital proportional amplifier terminal is connected with a fifth pin of a KA12 intermediate relay, a sixth pin of the sixth digital proportional amplifier terminal is connected with a second power supply positive electrode of a third digital proportional amplifier, a seventh pin of the sixth digital proportional amplifier terminal is connected with a second power supply negative electrode of the third digital proportional amplifier, an eighth pin of the sixth digital proportional amplifier terminal is connected with a second input reference voltage end of the third digital proportional amplifier, a ninth pin of the sixth digital proportional amplifier terminal is connected with a second input signal anode of a third digital proportional amplifier, and a tenth pin of the sixth digital proportional amplifier terminal is connected with a second input signal cathode of the third digital proportional amplifier; a first pin of a seventh digital proportional amplifier terminal is connected with an I-pin of a fourth channel of the first analog output module, a second pin of the seventh digital proportional amplifier terminal is connected with a VI + pin of a fourth channel of the first analog output module, a fourth pin of the seventh digital proportional amplifier terminal is connected with a zero line, a fifth pin of the seventh digital proportional amplifier terminal is connected with a fifth pin of a KA13 intermediate relay, a sixth pin of the seventh digital proportional amplifier terminal is connected with a first power supply positive pole of a fourth digital proportional amplifier, a seventh pin of the seventh digital proportional amplifier terminal is connected with a first power supply negative pole of the fourth digital proportional amplifier, an eighth pin of the seventh digital proportional amplifier terminal is connected with a first input reference voltage end of the fourth digital proportional amplifier, a ninth pin of the seventh digital proportional amplifier terminal is connected with a first input signal anode of a fourth digital proportional amplifier, and a tenth pin of the seventh digital proportional amplifier terminal is connected with a first input signal cathode of the fourth digital proportional amplifier; a first pin of an eighth digital proportional amplifier terminal is connected with an I-pin of a fourth channel of the second analog output module, a second pin of the eighth digital proportional amplifier terminal is connected with a VI + pin of a fourth channel of the second analog output module, a fourth pin of the eighth digital proportional amplifier terminal is connected with a zero line, a fifth pin of the eighth digital proportional amplifier terminal is connected with a fifth pin of a KA14 intermediate relay, a sixth pin of the eighth digital proportional amplifier terminal is connected with a second positive electrode of a fourth digital proportional amplifier, a seventh pin of the eighth digital proportional amplifier terminal is connected with a second negative electrode of the fourth digital proportional amplifier, and an eighth pin of the eighth digital proportional amplifier terminal is connected with a second input reference voltage end of the fourth digital proportional amplifier, and a ninth pin of the eighth digital proportional amplifier terminal is connected with the second input signal anode of the fourth digital proportional amplifier, and a tenth pin of the eighth digital proportional amplifier terminal is connected with the second input signal cathode of the fourth digital proportional amplifier.
9. The agricultural small hydraulic station control system of claim 1, wherein: the direct-current power supply module comprises a direct-current mobile power supply, a circuit breaker and an emergency stop switch which are sequentially connected.
10. The agricultural small hydraulic station control system of claim 1, wherein: the hydraulic station radiator is electrically connected with the zero line and the live line through a fuse, and is provided with a third switch for controlling the opening and closing of the hydraulic station radiator.
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