CN113110125B

CN113110125B - Fruit and vegetable machine control circuit, fruit and vegetable machine and fruit and vegetable machine control method

Info

Publication number: CN113110125B
Application number: CN202110274405.4A
Authority: CN
Inventors: 马建刚; 屈克勇
Original assignee: Sanmen Kangchuang Electronic Technology Co ltd
Current assignee: Sanmen Kangchuang Electronic Technology Co ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2022-04-01
Anticipated expiration: 2041-03-15
Also published as: CN113110125A

Abstract

The invention belongs to the technical field of fruit and vegetable machines, and particularly relates to a fruit and vegetable machine control circuit, a fruit and vegetable machine and a fruit and vegetable machine control method, wherein the fruit and vegetable machine control circuit comprises: the power supply module is used for converting an input power supply into a preset power supply; the signal conversion and control module is connected with the power supply module and is used for converting an adjusting signal preset by a user into a control signal; and the action execution module is connected with the signal conversion and control module and the second power conversion unit and is used for executing the switching of the load according to the control signal. The fruit and vegetable control circuit has the advantages that stable power output and multi-stage power output can be realized simultaneously.

Description

Fruit and vegetable machine control circuit, fruit and vegetable machine and fruit and vegetable machine control method

Technical Field

The invention relates to the technical field of fruit and vegetable machines, in particular to a fruit and vegetable machine control circuit, a fruit and vegetable machine and a fruit and vegetable machine control method.

Background

With the rapid development of the small household appliance industry, the fruit and vegetable machine gradually enters into thousands of households, and users expect that the fruit and vegetable machine can perform functions of disinfection, sterilization, pesticide degradation and the like besides a basic cleaning function, so that a control circuit of the fruit and vegetable machine is required to output different power supplies, power can be supplied to different loads, the power supply can be stably output, and impact damage to components and parts due to power supply mutation is avoided.

A Chinese patent with publication number CN106805265A, a control system of an intelligent disinfection purifier, comprising a control module, a switch module, a button module, an ultrasonic module, a transduction module, an active oxygen generation module and an indication module, wherein the control module comprises an intelligent chip, a control circuit module, a driving circuit module, a buzzer and a power interface, the intelligent chip is respectively connected with the buzzer, the control circuit module and the driving circuit module, the power interface is connected with the intelligent chip through the driving circuit module, the control module controls the ultrasonic module, the transduction module, the active oxygen generation module and the indication module through the control circuit module, the button module is connected with the control module through the control circuit module, the switch module is connected with the control module through the driving circuit module, the control system of the intelligent disinfection purifier utilizes the ultrasonic module and the transduction module to generate bubbles in water, and the pollutants are washed by bubble explosion, and the active oxygen generation module generates ozone for disinfection and sterilization.

The above patent can only realize simple disinfection purification performance, and can not realize stable power output.

Disclosure of Invention

The invention aims to provide a fruit and vegetable control circuit, which is used for solving the problem that the control circuit outputs stable power and a multi-stage power at the same time;

in order to achieve the purpose, the invention adopts the technical scheme that:

a fruit and vegetable machine control circuit comprises:

the power supply module is used for converting an input power supply into a preset power supply;

the power module includes:

the rectification filtering unit is used for rectifying and filtering the input power supply;

the first power supply conversion unit is connected with the rectification filtering unit and used for converting an input power supply into a first preset power supply; the first power conversion unit comprises an optical coupler U4, a MOS tube Q2, a transformer T2 and a power chip U3; the transformer T2 is provided with a first primary side, a second primary side and a first secondary side, wherein two ends of the first primary side are respectively connected to the rectifying and filtering unit and the MOS tube Q2, and two ends of the second primary side are respectively connected to the power chip U3 and the grounding end;

the on-off of the optical coupler U4 is controlled by a control instruction output by a control chip, the on-off of the MOS tube Q2 is controlled by the on-off of the optical coupler U4 so as to control the on-off of an output signal of the power supply chip U3, and the on-off of an output signal of the power supply chip U3 controls the on-off of a first primary side of a transformer T2 so as to control the on-off of an output power supply of a first secondary side of a transformer T2;

in the on state of the first primary side of the transformer T2, the second primary side of the transformer T2 also generates a feedback voltage signal according to the actual voltage of the first secondary side of the transformer T2 and inputs the feedback voltage signal to the power chip U3, and the power chip U3 adjusts the duty ratio of an output pin according to the feedback voltage to adjust the input current of the first primary side of the transformer T2;

the second power supply conversion unit is connected with the rectification filtering unit and used for converting an input power supply into a second preset power supply and a third preset power supply and converting the third preset power supply into a fourth preset power supply; the second power conversion unit includes: the transformer T1 is provided with a first primary side, a second primary side, a first secondary side and a second secondary side, wherein two ends of the first primary side are respectively connected to the rectifying and filtering unit and the power chip U1, and two ends of the second primary side are respectively connected to the power chip U1 and a ground terminal;

in the on state of the first primary side of the transformer T1, the second primary side of the transformer T1 also generates a feedback voltage signal according to the actual voltage of the second secondary side of the transformer T1 and inputs the feedback voltage signal to the power chip U1, and the power chip U1 adjusts the duty ratio of an output pin according to the feedback voltage to adjust the input current of the first primary side of the transformer T1;

further, the rectifying and filtering unit includes:

the overload protection circuit, the discharge circuit and the filter circuit;

the overload protection circuit is connected with the discharge circuit, and the discharge circuit is connected with the filter circuit;

the overload protection circuit comprises a FUSE1, a thermistor F1, a capacitor CX1, a capacitor CY1 and a capacitor CY 2; the port 1 of the FUSE FUSE1 is connected with the N end of an input power supply, the port 2 is connected with one end of a capacitor CX1, the other end of the capacitor CX1 is grounded through a capacitor CY2, the port 2 of the FUSE FUSE1 is also grounded through a capacitor CY1, and the port 2 of the FUSE FUSE1 is also connected with the filter circuit through a thermistor F1.

The discharge circuit comprises a resistor R3, a resistor R4, a resistor R8 and a resistor R9; the port 2 of the FUSE FUSE1 is connected with one end of a resistor R3 and one end of a resistor R4, the other end of the resistor R3 is connected with the L end of the input power supply after being connected with the resistor R8 in series, and the other end of the resistor R4 is connected with the L end of the input power supply after being connected with the resistor R9 in series.

The filter circuit comprises a first filter inductor L2, a capacitor CX2, a piezoresistor RV1 and a rectifier bridge BG 1; the port 1 of the first filter inductor L2 is connected with the port 2 of the FUSE FUSE1, the port 2 of the first filter inductor L2 is connected with the end L of an input power supply, the port 4 of the first filter inductor L2 is connected with the port 1 of the rectifier bridge BG1, the port 4 of the first filter inductor L2 is further connected with one end of a piezoresistor RV1, the other end of the piezoresistor RV1 is connected with the port 3 of the first filter inductor L2, a capacitor CX2 is connected in parallel with the two ends of the piezoresistor RV1, the port 3 of the first filter inductor L2 is connected with the port 3 of the rectifier bridge BG1, and the port 2 and the port 4 of the rectifier bridge are connected with a power supply conversion unit.

Further, the first power conversion unit includes: a transformer T2, an inductor L3, a power chip U3, an optocoupler U4, a resistor R16, a resistor R21, a resistor R22, a resistor R23, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a resistor R29, a resistor R30, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a resistor R35, a resistor R36, a resistor R38, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor CY5, a capacitor CY6, an electrolytic capacitor EC9, an electrolytic capacitor EC10, an electrolytic capacitor EC11, a diode D10, a diode D11, a diode D12, a triode Q1, a triode Q3, a MOS tube Q2 and a MOS tube Q4;

a first pin of the optical coupler U4 is connected with one end of a resistor R34, the other end of the resistor R34 is connected with a power supply, a first pin of the optical coupler U4 is further connected with a control signal, a second pin and a third pin of the optical coupler U4 are grounded, a fourth pin of the optical coupler U4 is connected with a gate of a MOS transistor Q4, a fourth pin of the optical coupler U4 is further connected with one end of a resistor R35, the other end of the resistor R35 is connected with the power supply, a drain of the MOS transistor Q4 is grounded through a resistor R31, the resistor R30 and the resistor R30 are respectively connected in parallel with two ends of the resistor R30, a source of the MOS transistor Q30 is connected with a drain of the MOS transistor Q30, a source of the MOS transistor Q30 is connected with a port 4 of a transformer T30, a gate of the MOS transistor Q30 is connected with one end of the resistor R30, the other end of the resistor R30 is connected with a positive electrode of the diode Q30, and a negative electrode of the resistor R30 are connected with a diode 30, the other end of the resistor R26 is connected to the source of the MOS transistor Q4, the source of the MOS transistor Q4 is further connected to the collector of the transistor Q3, the collector of the transistor Q3 is connected to the fifth pin of the power chip U3 through a resistor R28, the sixth pin of the power chip U3 is connected to the base of the transistor Q1 and the base of the transistor Q3, the collector of the transistor Q1 is connected to one end of a resistor R21, the other end of the resistor R21 is connected to one end of a resistor R21, one end of the resistor R21 connected to the collector of the transistor Q21 is also connected to the eighth pin of the power chip U21, the other end of the resistor R21 is connected to the rectifying and filtering unit, the other end of the resistor R21 is also connected to port 1 of the inductor L21, the port 2 of the inductor L21 is connected to ground through the capacitor CY 21 and the seventh pin 21, the capacitor CY 21 is connected in series with the capacitor CY 21, one end of the inductor L21 is connected to the ground, and the seventh pin of the transformer T21 is connected to the ground. A third pin of the power chip U3 is grounded through a resistor R38, a first pin of the power chip U3 is connected to one end of a resistor R29, the other end of the resistor R29 is connected to one end of a resistor R33, the other end of the resistor R33 is connected to port 1 of a transformer T2, a resistor R29 is connected to one end of a resistor R33 and is grounded through a resistor R36, a capacitor C7 is connected in parallel to both ends of the resistor R36, an eighth pin of the power chip U3 is connected to one end of a resistor R27, the other end of the resistor R27 is connected to the cathode of a diode D27, the anode of the diode D27 is connected to port 1 of the transformer T27, the eighth pin of the power chip U27 is also grounded through an electrolytic capacitor EC 27, the capacitor C27 is connected in parallel to both ends of the electrolytic capacitor EC 27, port 6 of the transformer T27 is connected to the rectifying and filtering unit, the port 12 of the transformer T27 is connected to the anode of the diode D27, and the port 12 of the transformer T27 is connected to one end of the resistor R27. The other end of the resistor R23 is connected with one end of the capacitor C9, the other end of the capacitor C9 is connected with the cathode of the diode D10, the resistor R22 is connected in parallel with the two ends of the resistor R23, the cathode of the diode D10 outputs a first preset voltage, the cathode of the diode D10 is grounded through the resistor R24, the electrolytic capacitor EC11 is connected in parallel with the two ends of the resistor R24, the electrolytic capacitor EC10 is connected in parallel with the two ends of the electrolytic capacitor EC11, and the port 7 of the transformer T2 is grounded.

Further, the second power conversion unit includes:

the first transformation subunit comprises a transformer T1, an inductor L1, a power chip U1, a resistor R1, a resistor R5, a resistor R7, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a capacitor C4, a capacitor C5, a capacitor CY3, a capacitor CY4, an electrolytic capacitor EC1, an electrolytic capacitor EC2, an electrolytic capacitor EC3, an electrolytic capacitor EC5, an electrolytic capacitor EC6, a diode D1, a diode D3 and a diode D4;

a port 5 of the transformer T1 is connected to the rectifying and filtering unit through an inductor L1, a port 1 of the inductor L1 is connected to ground through an electrolytic capacitor EC1, a port 2 of the inductor L1 is connected to ground through an electrolytic capacitor EC2, a port 2 of the inductor L1 is further connected to one end of a resistor R1, the other end of the resistor R1 is connected to one end of a resistor R5, the other end of the resistor R5 is connected to a second pin of the power chip U1, a port 5 of the transformer T1 is further connected to ground through a capacitor CY3 and a capacitor CY4, the capacitor CY3 and the capacitor CY3 are connected in series, a port 3 of the transformer T3 is connected to a fifth pin and a sixth pin of the power chip U3, a port 10 of the transformer T3 is connected to an anode of a diode D3, a cathode of the diode D3 outputs a second predetermined voltage, and a cathode of the diode D3 is connected to ground through the resistor R3, the electrolytic capacitor EC3 is connected in parallel with both ends of the diode D3, and a cathode of the diode D3 is connected to the diode 3, the port 1 of the transformer T1 is connected with one end of a resistor R13, the other end of the resistor R13 is connected with a first pin of a power supply chip U1 through a resistor R12, the other end of the resistor R13 is grounded through a resistor R14, one end of the resistor R13 connected with the resistor R12 is also grounded through a capacitor C5, the port 1 of the transformer T1 is also connected with the anode of a diode D4, the cathode of the diode D4 is connected to the second pin of the power chip U1 through a resistor R10, the cathode of the diode D4 is grounded through an electrolytic capacitor EC6, the capacitor C4 is connected in parallel to two ends of the electrolytic capacitor EC6, the third pin and the eighth pin of the power chip U1 are grounded, the seventh pin and the ninth pin of the power chip U1 are grounded through a resistor R15, the port 7 of the transformer T1 is connected to the anode of the diode D3, the cathode of the diode D3 outputs a third preset voltage, the cathode of the diode D3 is also grounded through a resistor R11, and the electrolytic capacitor EC5 is connected in parallel to two ends of the resistor R11.

Further, the second power conversion unit further includes:

the second transformation subunit comprises a voltage stabilizer U2, a capacitor C2, a capacitor C3 and an electrolytic capacitor EC 4;

the first pin of the voltage stabilizer U2 is connected with the negative electrode of the diode D3, the third pin of the voltage stabilizer U2 outputs a fourth preset voltage, the first pin of the voltage stabilizer U2 is grounded through a capacitor C3, the second pin of the voltage stabilizer U2 is grounded, the third pin of the voltage stabilizer U2 is grounded through a capacitor C2, and the electrolytic capacitor EC4 is connected in parallel to two ends of the capacitor C2.

Further, the signal conversion and control module comprises:

the key control circuit acquires a regulating signal preset by a user through a key;

the control chip IC1 is connected with the key control circuit and the second power conversion unit, and the control chip IC1 is used for converting the adjusting signal into a control signal;

and the signal conversion chip IC2 is connected with the control chip, and the signal conversion chip IC2 is used for converting the control signal into a corresponding load input signal.

Further, the action execution module comprises a relay K1, a relay K2, a relay K3, a relay K4, a diode D5, a diode D6, a diode D7, a diode D8, a connector CN2, a connector CN3, a connector CN4, a connector CN5 and a connector CN 6;

a fifteenth pin of the signal conversion chip IC2 is connected with a port 4 of a relay K1, a port 3 of a relay K1 is connected with a third preset power supply, a diode D5 is connected with two ends of the relay K1 in parallel, the anode of the diode is connected with a fifteenth pin of the signal conversion chip IC2, a port 2 of a relay K1 is connected with a port 2 of a relay K2, a port 1 of the relay K1 is connected with an interface 2 of a connector CN2, a port 1 of the relay K2 is connected with an interface 2 of a connector CN4, a port 1 of the relay K2 is further connected with an interface 2 of a connector CN3, an interface 1 of the connector CN4 is connected with an interface 1 of a connector CN3, an interface 1 of the connector CN3 is connected with an interface 1 of the connector CN2, a port 3 of the relay K2 is connected with the third preset power supply, a port 4 of the relay K2 is connected with a fourteenth pin of the signal conversion chip IC2, and a diode D6 is connected with two ends of the relay K2 in parallel, a fourteenth pin of the signal conversion chip IC2 is connected with the anode of a diode D6, a port 3 of a relay K3 is connected with a third preset power supply, a port 4 of the relay K3 is connected with a thirteenth pin of the signal conversion chip IC2, a diode D7 is connected with two ends of a relay K3 in parallel, a thirteenth pin of the signal conversion chip IC2 is connected with the anode of a diode D7, a port 2 of a relay K3 is connected with the second preset power supply, a port 2 of the relay K3 is also connected with a port 2 of a relay K4, a port 1 of the relay K3 is connected with an interface 2 of a connector CN5, a port 3 of the relay K4 is connected with the third preset power supply, a port 4 of the relay K4 is connected with a twelfth pin of the signal conversion chip IC2, a twelfth pin of the signal conversion chip IC2 is also connected with the anode of a diode D8, a diode D8 is connected with two ends of the relay K4 in parallel, a port 1 of the relay K4 is connected with two ends of the connector CN6, interface 1 of connector CN5 is connected with interface 1 of connector CN6, and interface 1 of connector CN6 is grounded.

And the display module is connected with the signal conversion and control module and is used for generating a corresponding display signal according to the control signal.

And the buzzer module is connected with the signal conversion and control module and outputs preset voice content according to the control signal.

The invention also aims to provide a fruit and vegetable machine, which comprises a load and the fruit and vegetable machine control circuit.

The invention also aims to provide a fruit and vegetable machine control method, which comprises the following steps:

step S1: acquiring a preset power supply signal through a power supply module;

step S1 includes:

step S11: the input power supply signal is rectified and filtered through a rectification filtering unit;

step S12: the first power supply conversion unit is used for converting the rectified and filtered power supply signal into a first preset power supply, the second power supply conversion unit is used for converting the rectified and filtered power supply signal into a second preset power supply and a third preset power supply, and the third preset power supply is converted into a fourth preset power supply;

step S12 includes:

step S121: the on-off of an optocoupler U4 is controlled by a control instruction output by a control chip, the on-off of an optocoupler U4 controls the on-off of an MOS tube Q2 so as to control the on-off of an output signal of a power supply chip U3, and the on-off of an output signal of the power supply chip U3 controls the on-off of a first primary side of a transformer T2 so as to control the on-off of a first secondary side output power supply of a transformer T2; under the conducting state of the first primary side of the transformer T2, a feedback voltage signal is generated by the second primary side of the transformer T2 according to the actual voltage of the first secondary side of the transformer T2 and is input to the power chip U3, and the power chip U3 adjusts the input current of the first primary side of the transformer T2 according to the duty ratio of an output pin adjusted by the feedback voltage;

step S122: in the on state of the first primary side of the transformer T1, the second primary side of the transformer T1 also generates a feedback voltage signal according to the actual voltage of the second secondary side of the transformer T1 and inputs the feedback voltage signal to the power chip U1, and the power chip U1 adjusts the duty ratio of an output pin according to the feedback voltage to adjust the input current of the first primary side of the transformer T1;

further, the fruit and vegetable machine control method further comprises the following steps:

step S2: the method comprises the steps that a regulating signal preset by a user is obtained through a signal conversion and control module, a control signal is generated according to the regulating signal, and then the action execution module is controlled to work through the control signal;

further, the fruit and vegetable machine control method comprises the following steps:

step S3: and receiving the control signal through the action execution module, and executing the switching of the load according to the control signal to realize the function preset by the user.

Compared with the prior art, the invention at least comprises the following beneficial effects:

(1) the first power supply conversion module and the second power supply conversion module in the control circuit are independent, so that the on-off of a power supply can be controlled according to the requirements of users, and the energy waste is avoided;

(2) the control circuit can generate a multi-stage preset power supply, the first preset power supply is 30V and is used for electrolyzing water to generate hydroxyl, so that the fruit and vegetable machine can be disinfected and sterilized;

(3) the on-off of the first power supply conversion unit is controlled by the optical coupler receiving a control instruction of the control chip, signals can be isolated from front and back, the on-off of the optical coupler is not influenced by a back-end circuit, and the optical coupler has the advantages of long control service life, high control sensitivity and no electric leakage;

(4) the power supply chip receives a voltage signal output by the transformer, and adjusts the duty ratio of high and low levels of the output pin according to the received signal, so as to control the input current of the transformer, and further control the circuit to realize stable power output.

Drawings

FIG. 1 is a general architectural diagram of an embodiment of the present invention;

FIG. 2 is a circuit diagram of a rectifying and filtering unit according to an embodiment of the present invention;

fig. 3 is a circuit diagram of a first power conversion unit in the embodiment of the present invention;

fig. 4 is a circuit diagram of a second power conversion unit in the embodiment of the present invention;

FIG. 5 is a circuit diagram of a control chip according to an embodiment of the present invention;

FIG. 6 is a circuit diagram of the key control module and the signal conversion chip according to the embodiment of the present invention;

FIG. 7 is a circuit diagram of an action execution module in an embodiment of the invention;

FIG. 8 is a circuit diagram of a display module in an embodiment of the invention;

FIG. 9 is a circuit diagram of a buzzer module in an embodiment of the invention;

FIG. 10 is a flow chart of a fruit and vegetable machine control method in an embodiment of the invention;

fig. 11 is a flowchart illustrating a step S1 of the method for controlling fruit and vegetable according to the embodiment of the present invention.

Detailed Description

The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the drawings, but the present invention is not limited to these embodiments.

The following describes in detail a fruit and vegetable control circuit provided by an embodiment of the present invention, taking an application in a fruit and vegetable machine as an example:

the fruit and vegetable machine comprises a load and the fruit and vegetable machine control circuit, and the fruit and vegetable machine control circuit is used for driving and controlling the opening and closing of the load.

As shown in FIG. 1, the control circuit of the fruit and vegetable machine of the present invention comprises a power module, a signal conversion and control module, an action execution module, a display module and a buzzer module.

The power module, the action execution module, the display module and the buzzer module are all connected with the signal conversion and control module, and the action execution module and the buzzer module are connected with the power module.

Further, as shown in fig. 2, the rectifying and filtering unit includes: the overload protection circuit, the discharge circuit and the filter circuit; the overload protection circuit is connected with the discharge circuit, and the discharge circuit is connected with the filter circuit.

The input alternating current commercial power flows through a FUSE FUSE1, then flows through a filter inductor L2 through a thermistor F1, the FUSE and the thermistor are normally conducted under the condition that the input power supply is normal, when the input power supply is abnormally increased, the resistance value of the thermistor is increased, the passing current is reduced, the FUSE is disconnected, and the rear end circuit is protected. The filter inductor L2 and the rectifier bridge BG1 convert the input alternating current commercial power into direct current primarily, and transmit the direct current to the power conversion unit, and meanwhile, the discharge circuit can consume a capacitor to store electricity after the circuit is powered off.

Further, as shown in fig. 3, the first power conversion unit includes: a transformer T2, an inductor L3, a power chip U3, an optocoupler U4, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R21, a resistor R22, a resistor R23, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a resistor R29, a capacitor C29, a capacitor CY 29, an electrolytic capacitor EC 29, a diode D29, a diode Q29, a triode Q29, a MOS transistor Q29, and a MOS transistor Q29;

a first pin of the optical coupler U4 is connected with one end of a resistor R34, the other end of the resistor R34 is connected with a power supply, a first pin of the optical coupler U4 is further connected with a control signal, a second pin and a third pin of the optical coupler U4 are grounded, a fourth pin of the optical coupler U4 is connected with a gate of a MOS transistor Q4, a fourth pin of the optical coupler U4 is further connected with one end of a resistor R35, the other end of the resistor R35 is connected with the power supply, a drain of the MOS transistor Q4 is grounded through a resistor R31, the resistor R30 and the resistor R30 are respectively connected in parallel with two ends of the resistor R30, a source of the MOS transistor Q30 is connected with a drain of the MOS transistor Q30, a source of the MOS transistor Q30 is connected with a port 4 of a transformer T30, a gate of the MOS transistor Q30 is connected with one end of the resistor R30, the other end of the resistor R30 is connected with a positive electrode of the diode Q30, and a negative electrode of the resistor R30 are connected with a diode 30, the other end of the resistor R26 is connected to the source of the MOS transistor Q4, the source of the MOS transistor Q4 is further connected to the collector of the transistor Q3, the collector of the transistor Q3 is connected to the fifth pin of the power chip U3 through a resistor R28, the power chip U3 is preferably a chip IW1760, the sixth pin of the power chip U3 is connected to the base of the transistor Q1 and the base of the transistor Q1, the collector of the transistor Q1 is connected to one end of a resistor R1, the other end of the resistor R1 is connected to one end of a resistor R1, one end of the resistor R1 connected to the collector of the transistor Q1 is further connected to the eighth pin of the power chip U1, the other end of the resistor R1 is connected to a rectifying and filtering unit, the other end of the resistor R1 is further connected to port 1 of an inductor L1, port 2 of the inductor L1 is connected to ground through an electrolytic capacitor EC1, port 2 of the inductor L1 is further connected to ground through a capacitor CY1 and a positive electrode of a diode 1 connected in series with a diode 1 in series with a capacitor c1, the cathode of the diode D9 is connected to one end of a resistor R18 and one end of a resistor R19, the other end of the resistor R19 is connected to the resistor R19, the other end of the resistor R19 is connected to one end of a capacitor CY 19, the capacitor C19 is connected in parallel to the two ends of the resistor R19, the port 6 of the transformer T19 is connected between the resistor R19 and the capacitor CY 19, the seventh pin of the power chip U19 is grounded, the third pin of the power chip U19 is grounded through the resistor R19, the first pin of the power chip U19 is connected to one end of the resistor R19, the other end of the resistor R19 is connected to the port 1 of the transformer T19, the resistor R19 is connected to one end of the resistor R19 and the cathode of the resistor R19 is connected to the anode of the diode R19, the diode R19 is connected to the port T19, the anode of the diode R19 is connected to the diode R19 and the port 19. The eighth pin of the power chip U3 is further grounded through an electrolytic capacitor EC9, a capacitor C8 is connected in parallel to two ends of the electrolytic capacitor EC9, a port 6 of a transformer T2 is connected to the rectifying and filtering unit, a port 12 of a transformer T2 is connected to an anode of a diode D10, a port 12 of the transformer T2 is connected to one end of a resistor R23, the other end of the resistor R23 is connected to one end of the capacitor C9, the other end of the capacitor C9 is connected to a cathode of the diode D10, a resistor R22 is connected in parallel to two ends of a resistor R23, a cathode of the diode D10 outputs a first preset voltage, a cathode of the diode D10 is grounded through the resistor R24, an electrolytic capacitor EC11 is connected in parallel to two ends of a resistor R24, an electrolytic capacitor EC10 is connected in parallel to two ends of the electrolytic capacitor EC11, and a port 7 of the transformer T2 is grounded.

The 310V dc power transmitted to the first power conversion unit through the rectification filter unit further filters the ac signal through the inductor L3 and then is input to the transformer T2, the transformer T2 transforms the 310V dc power into the first preset power dc power of 30V, and further filters the ac signal through the electrolytic capacitor EC10 and the electrolytic capacitor EC 11. The power transmitted by the rectifying and filtering unit is also connected with the eighth pin of the power chip U3 through a resistor R16 and a resistor R21, and continuously supplies power to the power chip U3.

The first power supply conversion unit controls the on and off of the first preset power supply through the optocoupler, and has the advantages of long service life, high control sensitivity, no electric leakage and the like. The first preset power supply output by the first power supply conversion unit provides power for the load hydroxyl water ions, the optical coupler U4 controls the on-off of the first power supply conversion unit according to the I-CTRL end signal from the control chip IC1, when the preset adjustment signal of a user is to turn on the load hydroxyl water ions, the I-CTRL end of the control chip IC1 outputs a high level signal, the optical coupler U4 is turned on, the MOS tube Q4 is turned off, the current flowing from the port 4 of the transformer T2 to the MOS tube Q2 flows to the fifth pin of the power chip U3 through the resistor R28, the power chip U3 normally works, the first power supply conversion unit is normally turned on and outputs the first preset power supply, otherwise, when the preset adjustment signal of the user is to turn off the load hydroxyl water ions, the I-CTRL end of the control chip IC1 outputs a low level signal, the optical coupler U4 is turned off, the MOS tube Q4 is turned on, the current flowing from the port 4 of the transformer T2 to the MOS tube Q2 passes through the MOS tube Q4, and the current flows into the ground through the resistor R30, the resistor R31 and the resistor R32, the fifth pin of the power chip U3 cannot detect a current signal, the power chip U3 stops working, and the output of the first preset power supply is turned off.

The first power conversion unit also adjusts the size of the output power in the circuit through the power chip U3 to stabilize the power output in the circuit. The port 1 of the transformer T2 generates a corresponding voltage signal according to the voltage and current of the port 12 and the port 7 of the transformer T2, the voltage is divided by the resistor R33 and the resistor R29 and then transmitted to the first pin of the power chip U3, the first pin of the power chip U3 is used for monitoring the state of output voltage in real time, when the optical coupler is normally switched on, the fifth pin of the power chip U3 monitors the current flowing through the MOS transistor Q2 in real time, the power chip U3 adjusts the duty ratio of the output pin according to the voltage and current signals monitored by the first pin and the fifth pin to adjust the output state of the circuit power supply, when the monitored voltage and current signals are greater than a preset value, the power chip U3 reduces the duty ratio of high level, outputs the adjusted voltage and current signals through the sixth pin, and transmits the voltage and current signals to the MOS transistor Q2 through the triode Q1, the triode Q3 and the resistor R25 to reduce the flow passing through the MOS transistor Q2, and thus reduces the voltage current flowing through

ports

4 and 6 of transformer T2, thereby reducing the output power size, and vice versa.

Further, as shown in fig. 4, the second power conversion unit includes:

the first transformer sub-unit comprises a transformer T1, an inductor L1, a power chip U1, a resistor R1, a resistor R2, a resistor R5, a resistor R6, a resistor R7, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a capacitor C1, a capacitor C4, a capacitor C5, a capacitor CY3, a capacitor CY4, an electrolytic capacitor EC1, an electrolytic capacitor EC2, an electrolytic capacitor EC3, an electrolytic capacitor EC5, an electrolytic capacitor EC6, a diode D1, a diode D2, a diode D3 and a diode D4;

a port 5 of the transformer T1 is connected to the rectifying and filtering unit through an inductor L1, a port 1 of an inductor L1 is connected to ground through an electrolytic capacitor EC1, a port 2 of an inductor L1 is connected to ground through an electrolytic capacitor EC2, a port 2 of an inductor L1 is further connected to one end of a resistor R1, the other end of the resistor R1 is connected to one end of a resistor R5, the other end of the resistor R5 is connected to a second pin of a power chip U5, the power chip U5 is preferably connected to an IW1819, the port 5 of the transformer T5 is further connected to ground through a capacitor CY5 and a capacitor CY5, the capacitor CY5 and the capacitor CY5 are connected in series, a port 3 of the transformer T5 is connected to an anode of a diode D5, a cathode of the diode D5 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to the inductor L5, the second pin of the capacitor C5 is connected in parallel to the sixth pin of the power chip U5 and the fifth pin of the power chip U5. A port 10 of the transformer T1 is connected to an anode of the diode D1, a cathode of the diode D1 outputs a second preset voltage, a cathode of the diode D1 is grounded through a resistor R7, an electrolytic capacitor EC3 is connected in parallel to both ends of the resistor R7, a port 6 of the transformer T1 is connected to a cathode of the diode D3, a port 1 of the transformer T1 is connected to one end of a resistor R13, the other end of the resistor R13 is connected to a first pin of the power chip U12 through a resistor R12, the other end of the resistor R12 is grounded through a resistor R12, one end of the resistor R12 connected to the resistor R12 is also grounded through a capacitor C12, a port 1 of the transformer T12 is also connected to an anode of the diode D12, a cathode of the diode D12 is connected to a second pin of the power chip U12 through the resistor R12, a cathode of the diode D12 is grounded through the electrolytic capacitor C12, both ends of the electrolytic capacitor C12 are connected in parallel to both ends of the electrolytic capacitor U12, and the third pin of the power chip U12 and the eighth pin are grounded. The seventh pin and the ninth pin of the power chip U1 are grounded through a resistor R15, the port 7 of the transformer T1 is connected to the anode of the diode D3, the cathode of the diode D3 outputs a third preset voltage, the cathode of the diode D3 is also grounded through a resistor R11, and the electrolytic capacitor EC5 is connected in parallel to two ends of the resistor R11.

the first pin of the voltage stabilizer U2 is connected with the cathode of the diode D3, the voltage stabilizer U2 preferably selects KA7805, the third pin of the voltage stabilizer U2 outputs a fourth preset voltage, the first pin of the voltage stabilizer U2 is grounded through a capacitor C3, the second pin of the voltage stabilizer U2 is grounded, the third pin of the voltage stabilizer U2 is grounded through a capacitor C2, and the electrolytic capacitor EC4 is connected in parallel with two ends of the capacitor C2.

The 310V dc power transmitted to the second power conversion unit through the rectification filter unit further filters the ac signal through the inductor L3 and then is input to the transformer T1, the transformer T1 transforms the 310V dc power into a second preset power dc power of 24V, and further filters the ac signal through the electrolytic capacitor EC 3. The transformer T1 transforms the 310 dc power to a third preset power 12V, then converts the third preset power to a fourth preset power 5V by the regulator U2, and further filters the ac signal by the electrolytic capacitor EC5 and the electrolytic capacitor EC 4. The power transmitted by the rectifying and filtering unit is also connected with the second pin of the power chip U1 through a resistor R1 and a resistor R5, and continuously supplies power to the voltage regulator U2.

The second power conversion unit adjusts the size of the output power in the circuit through the power chip U1 to stabilize the power output in the circuit. The port 1 of the transformer T1 generates a corresponding voltage signal according to the voltage and current of the port 7 and the port 9 of the transformer T1, the voltage is divided by the resistor R13 and the resistor R12 and then transmitted to the first pin of the power chip U1, the first pin of the power chip U1 is used for monitoring the state of output voltage in real time, the ninth pin of the power chip U1 monitors the current in the circuit in real time, the power chip U1 adjusts the duty ratio of high and low levels of an output pin according to the voltage and current signals of the first pin and the ninth pin to adjust the output state of the circuit power, when the monitored voltage and current signals are greater than a preset value, the power chip U1 reduces the duty ratio of the high level, outputs the adjusted voltage and current signals through the fifth pin and the sixth pin, reduces the voltage and current flowing through the port 5 and the port 3 of the transformer T1, thereby reducing the size of the output power, and vice versa.

Further, as shown in fig. 5 and 6, the signal conversion and control module includes: the key control circuit, the control chip IC1 and the signal conversion chip IC 2;

the key control circuit comprises a key K5, a key K6, a key K7, a key K8, a key K9, a key K10, a key K11, a key K12, a key K13, a resistor R39, a resistor R44, a resistor R45, a diode D45, a capacitor C45, and a capacitor C45;

one end of the resistor R44 is connected to a first pin of the control chip IC1, the control chip IC1 is preferably a chip R5F100FEA, the other end of the resistor R44 is connected to the resistor R44, the resistor R44 is grounded through a capacitor C44, the diode D44 is connected in parallel to two ends of the resistor R44, the anode of the diode D44 is connected to the first pin of the control chip IC 44, the end of the resistor R44 connected to the resistor R44 is further connected to the key K44, the end of the resistor R44 connected to the capacitor C44 is further connected to the forty-th pin of the control chip IC 44, one end of the resistor R44 is connected to the first pin of the control chip IC 44, the other end of the resistor R44 is connected to the resistor R44, the resistor R44 is grounded through the capacitor C44, the diode D44 is connected in parallel to two ends of the resistor R44, the anode of the diode D44 is connected to the first pin of the control chip IC 44, the resistor R44 is further connected to the capacitor C44 and the first pin of the control chip 44 is connected to the capacitor C44. One end of a resistor R46 is connected with a first pin of a control chip IC1, the other end is connected with a resistor R54, the resistor R54 is grounded through a capacitor C54, a diode D54 is connected in parallel with two ends of the resistor R54, the anode of the diode D54 is connected with the first pin of the control chip IC 54, one end of the resistor R54 connected with the resistor R54 is further connected with a key K54, one end of the resistor R54 connected with the capacitor C54 is further connected with a thirty-ninth pin of the control chip IC 54, one end of the resistor R54 connected with the first pin of the control chip IC 54, the other end is connected with the resistor R54, the resistor R54 is grounded through the capacitor C54, the diode D54 is connected in parallel with two ends of the resistor R54, the anode of the diode D54 is connected with the first pin of the control chip IC 54, one end of the resistor R54 connected with the resistor R54 is further connected with the thirty-first pin of the control chip IC 54, and the thirty-first pin of the control chip 54 are connected with the first pin of the control chip IC 54. The other end of the resistor R56 is connected with a resistor R56, the resistor R56 is grounded through a capacitor C19, a diode D18 is connected with two ends of a resistor R48 in parallel, the anode of a diode D18 is connected with a first pin of a control chip IC1, one end of the resistor R1 connected with the resistor R1 is also connected with a key K1, one end of the resistor R1 connected with the capacitor C1 is also connected with a thirty-seventh pin of the control chip IC1, one end of the resistor R1 is connected with the first pin of the control chip IC1, the other end of the resistor R1 connected with the resistor R1, the resistor R1 is grounded through the capacitor C1, the diode D1 is connected with two ends of the resistor R1 in parallel, the anode of the diode D1 is connected with the first pin of the control chip IC1, one end of the resistor R1 connected with the resistor R1 is also connected with the key K1, one end of the resistor R1 connected with a sixth pin of the control chip IC1, and the other end of the resistor R1 is connected with the first pin of the control chip 1 and the resistor R1 connected with the resistor R1. A resistor R58 is grounded through a capacitor C21, a diode D20 is connected in parallel with two ends of a resistor R50, the anode of the diode D50 is connected with a first pin of a control chip IC 50, one end of the resistor R50 connected with the resistor R50 is also connected with a key K50, one end of the resistor R50 connected with the capacitor C50 is also connected with a thirty-fifth pin of the control chip IC 50, one end of the resistor R50 is connected with the first pin of the control chip IC 50, the other end of the resistor R50 connected with the resistor R50, the resistor R50 is grounded through the capacitor C50, the diode D50 is connected in parallel with two ends of the resistor R50, the anode of the diode D50 is connected with the first pin of the control chip IC 50, one end of the resistor R50 connected with the resistor R50 is also connected with the key K50, one end of the resistor R50 connected with the capacitor C50 is also connected with a thirty-fourth pin of the control chip IC 50, one end of the resistor R50 is connected with the resistor R50, and the other end of the resistor R50 is connected with the resistor R50, the resistor R50 is connected with the resistor C50, the resistor R50, and the resistor R50, the resistor C50 is connected with the resistor C50, the resistor C50 is connected with the resistor C50, the other end of the resistor C50, the resistor C is connected with the resistor C50, the resistor C is connected with the resistor C. The diode D22 is connected in parallel to two ends of the resistor R39, the anode of the diode D22 is connected with the first pin of the control chip IC1, the end of the resistor R39 connected with the resistor R60 is also connected with the key K13, and the end of the resistor R60 connected with the capacitor C23 is also connected with the thirty-third pin of the control chip IC 1.

The signal conversion and control module is used for acquiring different key on-off signals according to user requirements and transmitting corresponding signals to the control chip IC1, the control chip IC1 generates corresponding control signals according to the control signals and transmits the control signals to the signal conversion chip IC2, the signal conversion chip IC2 preferably selects the chip ULN2003A, the signal conversion chip IC2 converts the control signals into load input signals and transmits the load input signals to the action execution module, so that the action execution module executes corresponding load opening and closing actions according to the signals, meanwhile, the control chip IC1 also transmits the control signals to the display module and the buzzer module, and the display module and the buzzer module display whether the working state of the preset fruit and vegetable machine is normal or not according to the control signals.

Further, as shown in fig. 7, the action execution module includes a relay K1, a key control circuit relay K2, a relay K3, a relay K4, a diode D5, a diode D6, a diode D7, a diode D8, a connector CN2, a connector CN3, a connector CN4, a connector CN5, and a connector CN 6;

The action execution module controls four loads of a water pump (SB), an air pump (QB), a water inlet valve (JS) and a drain valve (PS) respectively, the action execution module controls the corresponding loads to be opened and closed according to load input signals transmitted by the signal conversion chip IC2 so as to control the working states of different loads, and the relay is powered by the second power supply conversion unit in a grading manner through the on-off of the relay control circuit without an additional external power supply.

Further, as shown in fig. 8, the display module includes a light emitting diode LED1, a light emitting diode LED2, a light emitting diode LED3, a light emitting diode LED4, a light emitting diode LED5, a light emitting diode LED6, a light emitting diode LED7, a light emitting diode LED8, a nixie tube LED10, and a resistor R42;

the first pin of the nixie tube LED10 and the anode of the light emitting diode LED1 are both connected with the twenty-third pin of the control chip IC1, the second pin of the nixie tube LED10 and the anode of the light emitting diode LED2 are both connected with the twenty-fourth pin of the control chip IC1, the third pin of the nixie tube LED10 and the anode of the light emitting diode LED3 are both connected with the twenty-fifth pin of the control chip IC1, the fourth pin of the nixie tube LED10 and the anode of the light emitting diode LED4 are both connected with the twenty-sixth pin of the control chip IC1, the sixth pin of the nixie tube LED10 and the anode of the light emitting diode LED5 are both connected with the twenty-eighth pin of the control chip IC1, the seventh pin of the nixie tube LED10 and the anode of the light emitting diode LED6 are both connected with the twenty-ninth pin of the control chip IC1, the eighth pin of the nixie tube LED10 and the anode of the light emitting diode LED7 are both connected with the thirty-third pin of the control chip IC1, the eleventh pin of the nixie tube LED 828653 and the light emitting diode LED 8653, a tenth pin of the nixie tube LED10 is connected to a thirty-second pin of the control chip IC1, a fifth pin of the nixie tube LED10 is connected to a twenty-seventh pin of the control chip IC1, a twenty-first pin of the control chip IC1 is connected to one end of the resistor R42, and the other end of the resistor R42 is connected to a cathode of the light emitting diode LED1, a cathode of the light emitting diode LED2, a cathode of the light emitting diode LED3, a cathode of the light emitting diode LED4, a cathode of the light emitting diode LED5, a cathode of the light emitting diode LED6, a cathode of the light emitting diode LED7, and a cathode of the light emitting diode LED 8.

Through signal conversion and the pressing of different keys in the control module, the control chip IC1 generates corresponding display signals according to the received key signals and transmits the display signals to the display module, and controls the nixie tube and the light-emitting diode in the display module to emit light, so that a user can know whether the setting is successful and the time is displayed when the key is pressed.

Further, as shown in fig. 9, the buzzer module includes a buzzer BZ1, a transistor Q5, a resistor R37, a resistor R40, a resistor R61, a resistor R65, and a capacitor C23;

a forty-fourth pin of the control chip IC1 is connected with one end of a resistor R40, the other end of the resistor R40 is connected with a base of a triode Q5, one end of the resistor R40, which is connected with the triode Q5, is also grounded through a capacitor C23, an emitter of the triode Q5 is connected with a sixteenth pin of the control chip U1, one end of the resistor R40, which is connected with the triode Q5, is also connected with one end of a resistor R65, the other end of the resistor R65 is connected with a collector of a triode Q5, a collector of the triode Q5 is also connected with one end of a resistor R61, the other end of the resistor R51 is connected with one end of the resistor R37, the other end of the resistor R37 is connected with a fourth preset voltage, and the buzzer BZ1 is connected in parallel with two ends of the resistor R51.

Through signal conversion and pressing of different keys in the control module, the control chip IC1 can send out corresponding audio signals to the buzzer module, and the buzzer sends out corresponding audio according to the corresponding audio signals.

According to the working principle, the embodiment of the invention also provides a fruit and vegetable machine control method, as shown in fig. 10, the method comprises the following steps:

step S1: acquiring a preset power supply signal through a power supply module;

as shown in fig. 11, step S1 includes:

step S12 includes:

According to the working principle of the fruit and vegetable control circuit, the step S1 is specifically as follows:

the alternating current commercial power 220V is subjected to primary rectification and filtering through the rectification and filtering unit to form a direct current power supply 310V, the direct current power supply 310V flows through the first power supply conversion unit and the second power supply conversion unit respectively, the first power supply conversion unit outputs a first preset power supply to supply power for the load hydroxyl water ion generator, and the second power supply conversion unit outputs a second preset power supply, a third preset power supply and a fourth preset power supply to supply power for other loads and the control chip. The first power conversion unit controls the on-off of the first power conversion unit through the control optocoupler U4 so as to control the output state of a first preset power supply, the optocoupler U4 controls the on-off of the first power conversion unit according to a signal from an I-CTRL end of the control chip IC1, when a preset adjustment signal of a user is to turn on the load hydroxyl water ions, the I-CTRL end of the control chip IC1 outputs a high level signal, the optocoupler U4 is switched on, the MOS tube Q4 is switched off, a current flowing from a port 4 of the transformer T2 to the MOS tube Q2 flows to a fifth pin of the power chip U3 through a resistor R28, the power chip U3 normally works, the first power conversion unit is normally switched on and outputs the first preset power supply, on the contrary, when the preset adjustment signal of the user is to turn off the load hydroxyl water ions, the I-CTRL end of the control chip IC1 outputs a low level signal, the optocoupler U4 is switched off, the MOS tube Q4 is switched on, the current flowing from the port 4 of the transformer T2 to the MOS transistor Q2 passes through the MOS transistor Q4 and flows to the ground through the resistor R30, the resistor R31 and the resistor R32, the fifth pin of the power chip U3 cannot detect a current signal, the power chip U3 stops working, and the output of the first preset power supply is turned off. The first power conversion unit also adjusts the size of the output power in the circuit through a power chip U3 to stabilize the power output in the circuit, a port 1 of a transformer T2 generates a corresponding voltage signal according to the voltage and current of a port 12 and a port 7 of a transformer T2, the voltage is divided by a resistor R33 and a resistor R29 and then transmitted to a first pin of a power chip U3, a first pin of the power chip U3 is used for monitoring the state of the output voltage in real time, when the optical coupler is normally switched on, a fifth pin of the power chip U3 monitors the current flowing through an MOS transistor Q2 in real time, a power chip U3 adjusts the duty ratio of an output pin according to the voltage and current signals monitored by the first pin and the fifth pin to adjust the state of the circuit power output, when the monitored voltage and current signals are greater than a preset value, the power chip U3 reduces the duty ratio of a high level and outputs the adjusted voltage and current signals through a sixth pin, and the current is transmitted to the MOS tube Q2 through the triode Q1, the triode Q3 and the resistor R25, the flow rate passing through the MOS tube Q2 is reduced, and further, the voltage and current circulating at the port 4 and the port 6 of the transformer T2 are reduced, so that the size of an output power supply is reduced, and vice versa. The second power conversion unit transforms the direct current power 310V into a second preset power 24V through a transformer T1, the transformer T1 transforms the input direct current 310V into a third preset power 12V, and then the third preset power is converted into a fourth preset power 5V through a voltage stabilizer U2. The second power conversion unit further adjusts the magnitude of the output power in the circuit through the power chip U1 to stabilize the power output in the circuit, the port 1 of the transformer T1 generates a corresponding voltage signal according to the magnitude of the voltage and current at the

ports

7 and 9 of the transformer T1, and transmits the voltage divided by the resistor R13 and the resistor R12 to the first pin of the power chip U1, the first pin of the power chip U1 is used for monitoring the state of the output voltage in real time, the ninth pin of the power chip U1 monitors the magnitude of the current in the circuit in real time, the power chip U1 adjusts the duty ratio of the high level and the low level of the output pin according to the voltage and current signals monitored by the first pin and the ninth pin to adjust the state of the circuit power output, when the monitored voltage and current signals are greater than a preset value, the power chip U1 reduces the duty ratio of the high level and outputs the adjusted voltage and current signals through the fifth pin and the sixth pin, the voltage current flowing through

ports

5 and 3 of transformer T1 is reduced, thereby reducing the output power size and vice versa.

The step S2 specifically includes: the user presses different keys according to own requirements, the key control circuit transmits an adjusting signal preset by the user to the control chip IC1, the control chip IC1 generates a corresponding control signal according to the adjusting signal and transmits the control signal to the signal conversion chip IC2, and the signal conversion chip IC2 converts the control signal into a load input signal and transmits the load input signal to the action execution module, so that the action execution module executes corresponding load opening and closing actions according to the signal.

The step S3 specifically includes: the action execution module controls corresponding relay switches according to signals transmitted by the signal conversion chip IC2 to control working states of different loads, and the action execution module respectively controls four loads, namely a water pump (SB), an air pump (QB), a water inlet valve (JS) and a water discharge valve (PS).

Example (c): when a user presses a 'fruit and vegetable' key, the signal conversion and control module transmits corresponding control signals to the action execution module to control the opening and closing of the corresponding relays, so that the load water inlet valve is controlled to be opened, the water pump is controlled to be opened, the air pump is controlled to be closed, and the drain valve is controlled to be opened.

The details are shown in the following table:

the invention adopts a mode of a graded independent power supply, independently generates a first preset power supply, can independently control the on-off, and avoids energy waste; the voltage and current in the circuit are detected through the power chip, the output voltage and current are adjusted, the stable output of the voltage and current is ensured, and the stable work of the load is controlled.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A fruit and vegetable control circuit is characterized by comprising:

the power module includes:

the first power supply conversion unit is connected with the rectification filtering unit and used for converting an input power supply into a first preset power supply; the first power conversion unit comprises an optocoupler U4, a MOS transistor Q2, a transformer T2 and a power chip U3; the transformer T2 has a first primary side of a transformer T2, a second primary side of a transformer T2 and a first secondary side of a transformer T2, wherein two ends of the first primary side of the transformer T2 are respectively connected to the rectifying and filtering unit and the MOS transistor Q2, and two ends of the second primary side of the transformer T2 are respectively connected to the power chip U3 and the ground terminal;

the on-off of the optocoupler U4 is controlled by a control instruction output by a control chip, the on-off of the optocoupler U4 controls the on-off of an MOS tube Q2 so as to control the on-off of an output signal of the power supply chip U3, and the on-off of an output signal of the power supply chip U3 controls the on-off of a first primary side of a transformer T2 so as to control the on-off of an output power supply of a first secondary side of a transformer T2;

the second power supply conversion unit is connected with the rectification filtering unit and used for converting an input power supply into a second preset power supply and a third preset power supply and converting the third preset power supply into a fourth preset power supply; the second power conversion unit includes: the transformer T1 and the power chip U1, the transformer T1 has a first primary side of the transformer T1, a second primary side of the transformer T1, a first secondary side of the transformer T1 and a second secondary side of the transformer T1, wherein two ends of the first primary side of the transformer T1 are respectively connected to the rectifying and filtering unit and the power chip U1, and two ends of the second primary side of the transformer T1 are respectively connected to the power chip U1 and the ground terminal;

the first power conversion unit further includes:

an inductor L3, a resistor R16, a resistor R21, a resistor R22, a resistor R23, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a resistor R29, a resistor R30, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a resistor R35, a resistor R36, a resistor R38, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor CY5, a capacitor CY6, an electrolytic capacitor EC9, an electrolytic capacitor EC10, an electrolytic capacitor EC11, a diode D10, a diode D11, a diode D12, a triode Q1, a triode Q3 and a MOS tube Q4;

a first pin of the optical coupler U4 is connected with one end of a resistor R34, the other end of the resistor R34 is connected with a power supply, a first pin of the optical coupler U4 is further connected with a control signal, a second pin and a third pin of the optical coupler U4 are grounded, a fourth pin of the optical coupler U4 is connected with a gate of a MOS transistor Q4, a fourth pin of the optical coupler U4 is further connected with one end of a resistor R35, the other end of the resistor R35 is connected with the power supply, a drain of a MOS transistor Q4 is grounded through a resistor R31, the resistor R30 and the resistor R30 are respectively connected in parallel with two ends of the resistor R30, a source of the MOS transistor Q30 is connected with a drain of the MOS transistor Q30, a source of the MOS transistor Q30 is connected with a port 4 of a transformer T30, a gate of the MOS transistor Q30 is connected with one end of the resistor R30, the other end of the resistor R30 is connected with an anode of the diode Q30 and a cathode of the resistor R30 are connected with a diode 30D 30, the other end of the resistor R26 is connected to the source of the MOS transistor Q4, the source of the MOS transistor Q4 is further connected to the collector of the transistor Q3, the collector of the transistor Q3 is connected to the fifth pin of the power chip U3 through the resistor R28, the sixth pin of the power chip U3 is connected to the base of the transistor Q1 and the base of the transistor Q3, the collector of the transistor Q3 is connected to one end of the resistor R3, the other end of the resistor R3 is further connected to one end of the inductor L3, the other end of the inductor L3 is connected to ground through the capacitor CY3 and the capacitor CY3, the capacitor CY3 is connected to the capacitor CY3 and the capacitor CY3, one end of the inductor L3 is connected to the port 6 of the transformer T3, the seventh pin of the power chip U3 is connected to ground, the third pin of the power chip U3 through the resistor R3 and the first pin of the power chip 3, the other end of the resistor R29 is connected with one end of a resistor R33, the other end of the resistor R33 is connected with a port 1 of a transformer T2, one end of the resistor R29 connected with the resistor R33 is grounded through a resistor R36, a capacitor C7 is connected with two ends of the resistor R36 in parallel, an eighth pin of a power supply chip U3 is connected with one end of the resistor R27, the other end of the resistor R27 is connected with the cathode of a diode D12, the anode of the diode D12 is connected with the port 1 of the transformer T2, the eighth pin of the power supply chip U3 is grounded through an electrolytic capacitor EC9, the capacitor C8 is connected with two ends of an electrolytic capacitor EC9 in parallel, a port 6 of a transformer T2 is connected with a rectifier filter unit, a port 12 of the transformer T2 is connected with the anode of a diode D10, a port 12 of the transformer T2 is connected with one end of a resistor R23, the other end of the resistor R23 is connected with one end of the capacitor C9, the other end of the cathode of the diode C9 is connected with a cathode 59 10, the resistor R22 is connected in parallel to two ends of the resistor R23, the cathode of the diode D10 outputs a first preset voltage, the cathode of the diode D10 is grounded through the resistor R24, the electrolytic capacitor EC11 is connected in parallel to two ends of the resistor R24, the electrolytic capacitor EC10 is connected in parallel to two ends of the electrolytic capacitor EC11, and the port 7 of the transformer T2 is grounded.

2. The fruit and vegetable control circuit of claim 1, wherein the rectifying and filtering unit comprises an overload protection circuit, a discharge circuit and a filter circuit;

the overload protection circuit comprises a FUSE1, a thermistor F1, a capacitor CX1, a capacitor CY1 and a capacitor CY 2; the port 1 of the FUSE FUSE1 is connected with the N end of an input power supply, the port 2 is connected with one end of a capacitor CX1, the other end of the capacitor CX1 is grounded through a capacitor CY2, the port 2 of the FUSE FUSE1 is also grounded through a capacitor CY1, and the port 2 of the FUSE FUSE1 is also connected with a filter circuit through a thermistor F1;

the discharge circuit comprises a resistor R3, a resistor R4, a resistor R8 and a resistor R9; the port 2 of the FUSE FUSE1 is connected with one end of a resistor R3 and one end of a resistor R4, the other end of the resistor R3 is connected with the L end of the input power supply after being connected with the resistor R8 in series, and the other end of the resistor R4 is connected with the L end of the input power supply after being connected with the resistor R9 in series;

the filter circuit comprises a first filter inductor L2, a capacitor CX2, a piezoresistor RV1 and a rectifier bridge BG 1; the port 1 of the first filter inductor L2 is connected with the port 2 of the FUSE FUSE1, the port 2 of the first filter inductor L2 is connected with the L end of an input power supply, the port 4 of the first filter inductor L2 is connected with the port 1 of the rectifier bridge BG1, the port 4 of the first filter inductor L2 is further connected with one end of a piezoresistor RV1, the other end of the piezoresistor RV1 is connected with the port 3 of the first filter inductor L2, a capacitor CX2 is connected to two ends of the piezoresistor RV1 in parallel, the port 3 of the first filter inductor L2 is connected with the port 3 of the rectifier bridge BG1, and the port 2 and the port 4 of the rectifier bridge are connected with a power supply conversion unit.

3. The fruit and vegetable control circuit of claim 2, wherein the second power conversion unit comprises:

the first voltage transformation subunit is connected with the rectification filtering unit and used for converting the input power supply into a second preset power supply and a third preset power supply;

the first transformer subunit further comprises an inductor L1, a resistor R1, a resistor R5, a resistor R7, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a capacitor C4, a capacitor C5, a capacitor CY3, a capacitor CY4, an electrolytic capacitor EC1, an electrolytic capacitor EC2, an electrolytic capacitor EC3, an electrolytic capacitor EC5, an electrolytic capacitor EC6, a diode D1, a diode D3 and a diode D4;

a port 5 of the transformer T1 is connected with the rectifying and filtering unit through an inductor L1, a port 1 of the inductor L1 is connected to the ground through an electrolytic capacitor EC1, a port 2 of the inductor L1 is connected to the ground through an electrolytic capacitor EC2, a port 5 of the transformer T1 is further connected to the ground through a capacitor CY3 and a capacitor CY4, a capacitor CY3 and a capacitor CY4 are connected in series, a port 3 of the transformer T1 is connected to a fifth pin and a sixth pin of the power chip U1, a port 3 of the transformer T1 is further connected to an anode of a diode D1, a cathode of the diode D1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the port 2 of the inductor L1, the port 2 of the inductor L1 is further connected to one end of the resistor R1, the other end of the resistor R1 is connected to one end of the diode R1, the other end of the diode R1 is connected to a second pin of the power chip U1, the anode of the diode 1 is connected to the diode 1. The cathode of the diode D1 outputs a second preset voltage, the cathode of the diode D1 is grounded through a resistor R7, an electrolytic capacitor EC3 is connected in parallel to two ends of a resistor R7, a port 6 of a transformer T1 is connected to the cathode of a diode D3, a port 1 of a transformer T1 is connected to one end of a resistor R13, the other end of the resistor R13 is connected to a first pin of a power chip U1 through a resistor R12, the other end of the resistor R13 is grounded through a resistor R13, one end of the resistor R13 connected to the resistor R13 is also grounded through a capacitor C13, the port 1 of the transformer T13 is also connected to the anode of the diode D13, the cathode of the diode D13 is connected to a second pin of the power chip U13 through a resistor R13, the cathode of the diode D13 is also grounded through an electrolytic capacitor EC 13, the capacitor C13 is connected in parallel to two ends of the electrolytic capacitor EC 13, a third pin and an eighth pin of the power chip U13 are grounded through a resistor R13, the port 7 of the transformer T1 is connected to the anode of the diode D3, the cathode of the diode D3 outputs a third preset voltage, the cathode of the diode D3 is further grounded through the resistor R11, and the electrolytic capacitor EC5 is connected in parallel to both ends of the resistor R11.

4. The fruit and vegetable control circuit of claim 3, wherein the second power conversion unit further comprises:

the second voltage transformation subunit is connected with the first voltage transformation subunit and used for converting the third preset power supply into a fourth preset power supply;

the first pin of the voltage stabilizer U2 is connected with the negative electrode of the diode D3, the third pin of the voltage stabilizer U2 outputs a fourth preset voltage, the first pin of the voltage stabilizer U2 is grounded through a capacitor C3, the second pin of the voltage stabilizer U2 is grounded, the third pin of the voltage stabilizer U2 is grounded through a capacitor C2, and the electrolytic capacitor EC4 is connected in parallel to two ends of a capacitor C2.

5. The fruit and vegetable control circuit of claim 1, further comprising:

the signal conversion and control module is connected with the power supply module and is used for converting an adjusting signal preset by a user into a control signal;

the signal conversion and control module comprises:

the key control circuit is used for acquiring a regulating signal preset by a user through a key;

the control chip IC1 is connected with the key control circuit and the second power supply conversion unit, and the control chip IC1 is used for generating a corresponding control signal according to the adjusting signal;

the signal conversion chip IC2 is connected to the control chip IC1, and the signal conversion chip IC2 is used for converting the control signal into a corresponding load input signal.

6. The fruit and vegetable control circuit of claim 5, further comprising:

the action execution module is connected with the signal conversion and control module and the second power conversion unit and is used for executing the switching of the load according to the control signal;

the action execution module comprises: relay K1, relay K2, relay K3, relay K4, diode D5, diode D6, diode D7, diode D8, connector CN2, connector CN3, connector CN4, connector CN5, connector CN 6;

a fifteenth pin of the signal conversion chip IC2 is connected with a port 4 of a relay K1, a port 3 of the relay K1 is connected with a third preset power supply, a diode D5 is connected with two ends of the relay K1 in parallel, an anode of the diode is connected with a fifteenth pin of the signal conversion chip IC2, a port 2 of the relay K1 is connected with a port 2 of the relay K2, a port 1 of the relay K1 is connected with an interface 2 of a connector CN2, a port 1 of the relay K2 is connected with an interface 2 of a connector CN4, a port 1 of the relay K2 is further connected with an interface 2 of a connector CN3, an interface 1 of the connector CN4 is connected with an interface 1 of a connector CN3, an interface 1 of the connector CN3 is connected with an interface 1 of the connector CN2, a port 3 of the relay K2 is connected with the third preset power supply, a port 4 of the relay K2 is connected with a fourteenth pin of the signal conversion chip IC2, a diode D6 is connected with two ends of the relay K2 in parallel, and a fourteenth pin of the relay K2 is connected with an anode of the diode D6. A port 3 of the relay K3 is connected with a third preset power supply, a port 4 of the relay K3 is connected with a thirteenth pin of the signal conversion chip IC2, a diode D7 is connected in parallel with two ends of the relay K3, a thirteenth pin of the signal conversion chip IC2 is connected with an anode of a diode D7, a port 2 of the relay K3 is connected with the second preset power supply, a port 2 of the relay K3 is also connected with a port 2 of the relay K4, a port 1 of the relay K3 is connected with an interface 2 of a connector CN5, a port 3 of the relay K4 is connected with the third preset power supply, a port 4 of the relay K4 is connected with a twelfth pin of the signal conversion chip IC2, a twelfth pin of the signal conversion chip IC2 is also connected with an anode of a diode D8, a diode D8 is connected in parallel with two ends of the relay K4, a port 1 of the relay K4 is connected with an interface 2 of a connector CN6, an interface 1 of the CN5 is connected with an interface 1 of the CN6, and an interface connector of the CN6 is grounded.

7. The fruit and vegetable machine control circuit according to claim 6, further comprising a display module connected to the signal conversion and control module, the display module being configured to display a preset working state of the fruit and vegetable machine according to the control signal.

8. The fruit and vegetable control circuit of claim 7, further comprising a buzzer module connected to the signal conversion and control module, wherein the buzzer module outputs a preset voice content according to the control signal.

9. A fruit and vegetable machine characterized in that the fruit and vegetable machine comprises a load and a fruit and vegetable control circuit according to any one of claims 1 to 8.

10. A fruit and vegetable control method, characterized in that the fruit and vegetable control circuit based on any one of claims 1 to 8 comprises the following steps:

step S1: acquiring a preset power supply signal through a power supply module;

step S1 includes:

step S12 includes:

step S122: in the on state of the first primary side of the transformer T1, the second primary side of the transformer T1 further generates a feedback voltage signal according to the actual voltage of the second secondary side of the transformer T1 and inputs the feedback voltage signal to the power chip U1, and the power chip U1 adjusts the duty ratio of the output pin according to the feedback voltage to adjust the input current of the first primary side of the transformer T1.

11. The fruit and vegetable machine control method of claim 10, further comprising the steps of:

step S2: and acquiring an adjusting signal preset by a user through the signal conversion and control module, generating a control signal according to the adjusting signal, and controlling the action execution module to work through the control signal.

12. The method of controlling fruit and vegetable machines of claim 11, wherein the method further comprises the steps of: