Control circuit of three-stage conveyor belt material flow simulation device

Abstract

The utility model discloses a control circuit of a three-stage conveyor belt material flow simulation device. The control circuit comprises a single-chip microcomputer circuit for controlling the whole circuit; the operation control circuit is used for controlling the conveyor belt motor, the alarm, the indicator light and the feeding mechanism; the trolley control circuit controls the trolley to run; the light simulation circuit is used for simulating the flowing state of the material on the conveying belt; the power supply circuit supplies power to the whole control circuit; the single-chip microcomputer circuit is connected with the operation control circuit and the light simulation circuit. According to the scheme, the flowing state of materials on the conveying belt can be visually simulated, and students can conveniently observe and understand.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of logistics teaching simulation equipment, especially to a control circuit of three -stage conveyer belt material flow simulation device. BACKGROUND

[0002] In the field of industrial automation, the conveyer belt system is an important part of material handling, widely used in various production lines, logistics and warehousing scenes. In order to design, debug, train and diagnose the fault of the conveyer belt system, it is often necessary to build a simulation device to simulate the flow state of the material on the conveyer belt.

[0003] The traditional conveyer belt simulation device is generally based on physical models or computer simulation. The physical model needs to build a real miniature conveyer belt system and use actual materials for simulation. This method is the most intuitive, but the cost is high, the space is large, and it is difficult to adjust parameters and simulate various fault conditions. Computer simulation is to use computer software (such as MATLAB, SolidWorks, etc.) to establish a mathematical model or three-dimensional model of the conveyer belt system, and simulate the movement of the material through the computer. This method can flexibly adjust parameters and simulate various working conditions, but it lacks intuitiveness and is difficult to use for operation training. SUMMARY

[0004] The utility model mainly solves the technical problems of high cost, not intuitive and poor flexibility in the prior art, and provides a control circuit of a three-stage conveyer belt material flow simulation device, which is low in cost, high in reliability, easy to operate and can intuitively simulate the flow state of the material.

[0005] The utility model mainly solves the above technical problems through the following technical scheme: a control circuit of a three-stage conveyer belt material flow simulation device, comprising:

[0006] A single-chip microcomputer circuit for controlling the entire circuit;

[0007] A running control circuit for controlling the operation of the conveyer belt motor, alarm, indicator light and feeding mechanism;

[0008] A trolley control circuit for controlling the operation of the trolley;

[0009] A light simulation circuit for simulating the flow state of the material on the conveyer belt;

[0010] A power supply circuit for providing power supply for the entire control circuit;

[0011] The single-chip microcomputer circuit is connected with the running control circuit, trolley control circuit and light simulation circuit respectively;

[0012] The single-chip microcomputer circuit comprises a single-chip microcomputer chip, the single-chip microcomputer chip is STC15W4K32S4, the positive pole of a plurality of feedback diodes is connected to the 20th pin of the single-chip microcomputer chip, and the negative pole of the feedback diodes is connected to the feedback signal of the operation control circuit.

[0013] The single-chip microcomputer circuit is the core part of the circuit control, the single-chip microcomputer chip U501 adopts a 40-pin single-chip microcomputer STC15W4K32S4, the chip has higher performance in 8-bit chips, so that it can meet the control function of the whole circuit. The pin number is connected with each circuit, among which the 20th pin is connected with each input and output terminal through a plurality of feedback diodes, the pin can generate an interrupt to realize the priority execution of the input circuit action, when the input signal changes, the single-chip microcomputer immediately interrupts and executes the action. Since the virtual simulation consumes a lot of resources of the single-chip microcomputer, if the interrupt structure is not used, the input signal cannot be responded in time, and the user will not have a good application experience. The 15th pin of the single-chip microcomputer is connected with a 24V power supply through a resistor, which can detect whether the system circuit works in a 24V operation state or a 5V detection state.

[0014] As preferred, the operation control circuit comprises 3 conveyor belt control units, 1 buzzer unit, 2 red and green light control units, 10 state feedback units, 2 valve control units and 3 74HC595 chips connected in series; the 14th pin of the first 74HC595 chip of the operation control circuit is connected with the 33rd pin of the single-chip microcomputer chip, the 14th pin of each subsequent 74HC595 chip is connected with the 9th pin of the previous 74HC595 chip, and the 1-7th pins and the 15th pin of each 74HC595 chip are output terminals.

[0015] The first conveyor belt control unit comprises a diode D103, a diode DA1 and a MOS tube Q9, the positive pole of the diode D103 is connected with the 17th pin of the single-chip microcomputer chip, the negative pole of the diode D103 is connected with an external PLC as Y1 terminal, the drain electrode of the MOS tube Q9, the negative pole of the power supply of the conveyor belt motor B101 and the negative pole of a feedback diode, the source electrode of the MOS tube Q9 is grounded, the gate electrode of the MOS tube Q9 is connected with an output terminal of a 74HC595 chip, the positive pole of the power supply of the conveyor belt motor B101 is connected with the negative pole of the diode DA1, and the positive pole of the diode DA1 is connected with a 5V power supply; the structures of the other two conveyor belt control units are the same as the first one, and the motors of the second and third conveyor belts are controlled, and the conveyor belt motor B101 is the motor of the first conveyor belt.

[0016] The structure of the buzzer unit is that the conveyor belt control unit replaces the conveyor belt motor with an active buzzer and connects a resistor R103 in series between the positive pole of the active buzzer and the diode; the buzzer unit controls the active buzzer.

[0017] The first traffic light unit includes a light emitting diode D101, the light emitting diode D101 is a green light emitting diode, the positive electrode of the light emitting diode D101 is connected to the negative electrode of a diode D108 through a resistor R101, the positive electrode of the diode D108 is connected to a power supply 5V, the negative electrode of the light emitting diode D101 is connected to the drain of a MOS tube Q107, the source of the MOS tube Q107 is grounded, and the gate of the MOS tube Q107 is connected to an output terminal of a 74HC595 chip; the negative electrode of the light emitting diode D101 is also connected to the negative electrode of a diode D110, and the negative electrode of the diode D110 is connected to the 38th pin of the single-chip microcomputer chip; another red-green light unit replaces the green light emitting diode of the first red-green unit with a red light emitting diode.

[0018] The first state feedback unit includes a MOS tube Q201, the drain of the MOS tube Q201 is connected to a power supply 24V through a resistor R201, the gate of the MOS tube Q201 is connected to an output terminal of a 74HC595 chip, the source of the MOS tube Q201 is grounded, and the drain of the MOS tube Q201 is also connected to an external PLC, the negative electrode of a diode D211 and the negative electrode of a feedback diode as X1 terminal, and the positive electrode of the diode D211 is connected to the 42nd pin of the single-chip microcomputer chip; the structures of the remaining state feedback units are the same as those of the first state feedback unit; each state feedback unit respectively feeds back signals such as fullness of a conveying belt 1, fullness of a conveying belt 2, fullness of a conveying belt 3, fullness of a hopper, lack of material in the hopper, completion of material feeding, positioning of a trolley, fullness of the trolley, material feeding of the trolley, and material receiving of the trolley to the single-chip microcomputer chip.

[0019] The first valve control unit includes a MOS tube Q17, the drain of the MOS tube Q17 is connected to an external PLC, a first end of a discharging valve and the negative electrode of a diode D106 as Y4 terminal, the second end of the discharging valve is connected to the negative electrode of a diode D115, the positive electrode of the diode D115 is connected to a power supply 5V, the positive electrode of the diode D106 is connected to the 28th pin of the single-chip microcomputer chip, the source of the MOS tube Q17 is grounded, and the gate of the MOS tube Q17 is connected to an output terminal of a 74HC595 chip; the structures of the other valve control units are the same as those of the first valve control unit. The two valve control units respectively control the discharging valve and the discharging valve.

[0020] The operation control circuit includes motion control of three conveying belt motors, control of road traffic lights, control of hopper discharging and discharging valve discharging, and these circuits enable the entire device to run. The circuit uses field effect tubes, which work cooperatively through the control signals of the single-chip microcomputer; at the same time, the control signals are fed back to the single-chip microcomputer end through diodes, so that the single-chip microcomputer can receive the control signals.

[0021] Take the conveyor belt 1 control as an example, field effect tube Q102 control conveyor belt motor B101 movement, single-chip microcomputer control movement, single field effect tube Q9 end for high level, field effect tube switch switch on, motor operation, Q9 end for low level when the motor stops. When using PLC external signal control, Y1 end. When the control signal is low, the motor runs, which can exactly match the control signal of PLC, and at the same time, the single-chip microcomputer can receive the signal of whether Y1 works through diode D103. Diode DA1 can prevent the internal 5-volt power supply from being burned out when the user connects the signal incorrectly, such as inserting high voltage into Y1.

[0022] The signal of the virtual part is fed back to the output end through the circuit. Take the full material of the conveyor belt 1 as an example. When the analog part has objects accumulated on the conveyor belt 1, the single-chip microcomputer outputs high level to Q1, and field effect tube Q201 is turned on, outputting low level at X1 end as a feedback signal connected to the input end of PLC, forming an interaction, and this level also exactly matches the input end of PLC. In the feedback signal, an indicating lamp is also installed to indicate the state of the output signal of the output sensor. J31-J37 in the circuit are button switches, which are used as analog signal inputs to facilitate students to test the function of the circuit.

[0023] As a preferred, the trolley control circuit comprises a main chip and two limit switches, the main chip is L9110, the first end of the limit switch S5.a is connected with the 6th pin of the main chip and the 9th pin of the single-chip microcomputer chip, the first end of the limit switch S6.a is connected with the 7th pin of the main chip and the 8th pin of the single-chip microcomputer chip, the second ends of the two limit switches are grounded, the 6th pin of the main chip is further connected with the positive electrode of diode D3.a through resistance R7.a, the 7th pin of the main chip is further connected with the power supply 5V through resistance R8.a, the positive electrode of diode D3.a is connected with the 7th pin of the single-chip microcomputer chip, the negative electrode of diode D3.a is further connected with the gate of MOS tube Q3.a, the drain of MOS tube Q3.a is connected with the 7th pin of the main chip, the source of MOS tube Q3.a is grounded, and the 1st pin and the 4th pin of the main chip are connected with the trolley.

[0024] The trolley control circuit is controlled by the main chip L9110, and the circuit is composed of elements such as field effect transistor Q3, left and right limit switches s5 and s6. When starting, the negative pole M13 of diode D3 is low, at this time, through D3, the 6th pin IA of the main chip is low, and the 7th pin IB is high, so that the trolley runs to the origin. When the trolley runs to the right end (origin), it collides with the switch S6, so that the 7th pin of the main chip M14 becomes low, at this time, the 6th pin and the 7th pin of the main chip are low, so that the trolley stops running. When M13 is high, 7 is low, 6 is high, the trolley runs to the right, when it collides with the limit switch S5, the 6th and 7th pins of the chip are low, and the trolley stops running, so that M13 can control the left and right running of the trolley.

[0025] As preferred, the light simulation circuit comprises a first light simulation unit and a second light simulation unit, the first light simulation unit comprises a plurality of 74HC595 chips connected in series, the 14th pin of the first 74HC595 chip of the first light simulation unit is connected to the 30th pin of the single-chip microcomputer chip, the 14th pin of each subsequent 74HC595 chip is connected to the 9th pin of the previous 74HC595 chip, the 11th pin of each 74HC595 chip is connected to the 32nd pin of the single-chip microcomputer chip, the 12th pin of each 74HC595 chip is connected to the 31st pin of the single-chip microcomputer chip, the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th and 15th pins of each 74HC595 chip are respectively connected to the anode of a light-emitting diode through a resistor, and the cathodes of the light-emitting diodes are grounded; the second light simulation unit comprises a plurality of 74HC595 chips connected in series, the 14th pin of the first 74HC595 chip of the second light simulation unit is connected to the 23rd pin of the single-chip microcomputer chip, the 14th pin of each subsequent 74HC595 chip is connected to the 9th pin of the previous 74HC595 chip, the 11th pin of each 74HC595 chip is connected to the 25th pin of the single-chip microcomputer chip, the 12th pin of each 74HC595 chip is connected to the 24th pin of the single-chip microcomputer chip, the 1st, 3rd, 5th and 7th pins of each 74HC595 chip are respectively connected to the anode of a red light-emitting diode, the 2nd, 4th, 6th and 15th pins of each 74HC595 chip are respectively connected to the anode of a green light-emitting diode, and the cathodes of the red light-emitting diodes and the green light-emitting diodes are grounded through resistors.

[0026] The part of the circuit is a material running simulation circuit. It is composed of a plurality of light-emitting diodes connected in series. The control circuit is completed by the HC595 circuit, and the light emission law is controlled by the single-chip microcomputer. The virtual and real effects are produced by cooperating with the running of the real object. The chip HC595 can output the serial input data through each port in parallel, so that the light-emitting diodes produce consistent action, and the effect of lighting together or extinguishing together is achieved, so that the virtual simulation is completed.

[0027] As preferred, the power supply circuit comprises a relay K601 and a relay K602, the first end of the coil of the relay K601 and the relay K602 is connected to the negative pole of a diode D602, the positive pole of the diode D602 is connected to an external 24V power supply, the second end of the coil of the relay K601 and the relay K602 is grounded; the static contact of the relay K601 is connected to the negative pole of the diode D602, the normally open moving contact of the relay K601 provides 24V voltage for the control circuit, the static contact of the relay K602 is connected to an external 5V power supply, the normally open moving contact of the relay K602 provides 5V voltage for the control circuit; the positive pole of a diode D605 is grounded, the negative pole of the diode D602 is connected to the positive pole of a diode D604, the negative pole of the diode D604 is connected to an external 24V power supply through a resistor R601.

[0028] The power input control end has two relays and an indicating light diode, and the rated voltage of the two relays is 24V. When the input voltage is 5V, the corresponding relay cannot be attracted, and the 5V voltage is output by the K601 normally closed contact, so that the circuit works in the 5V state. When the input voltage is 24V, each relay is attracted, and the K601 normally open contact is output to the VCC24V end. At the same time, VCC5V0 to VCC5V is turned on, which is the power supply of the running circuit. When the positive and negative poles of the input power supply are connected in reverse, the input of the power supply is blocked due to the existence of the diode D601, and the light-emitting diode D605 emits light to indicate that the input of the power supply is reversed.

[0029] The beneficial effects brought by the utility model are: low cost, high reliability, can intuitively simulate the flow state of materials on the conveying belt, convenient for operators to observe and understand, flexible control mode, can realize automatic control through a single-chip microcomputer program, can realize remote control through external PLC signals, convenient for integration with existing industrial control systems, adopts a single-chip microcomputer interrupt mechanism, can quickly respond to changes in input signals, improves the real-time performance and reliability of the system, and the scheme further has an analog input end, can simulate various sensor signals through a button switch, and is convenient for debugging and testing. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a control circuit block diagram of a three-stage conveying belt material flow simulation device of the utility model;

[0031] Figure 2 It is a single-chip microcomputer circuit schematic diagram of the utility model;

[0032] Figure 3 、 Figure 4 and Figure 5 It is a running control circuit schematic diagram of the utility model;

[0033] Figure 6This is a schematic diagram of a car control circuit according to this utility model;

[0034] Figure 7 , Figure 8 and Figure 9 This is a schematic diagram of a first lighting simulation unit of this utility model;

[0035] Figure 10 This is a schematic diagram of a second lighting simulation unit according to this utility model;

[0036] Figure 11 This is a schematic diagram of a power supply circuit according to this utility model;

[0037] In the diagram: 1. Microcontroller circuit; 2. Operation control circuit; 3. Car control circuit; 4. Lighting simulation circuit; 5. Power supply circuit. Detailed Implementation

[0038] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0039] Example: The control circuit of a three-stage conveyor belt material flow simulation device in this example is as follows: Figure 1 As shown, it includes:

[0040] 1. A microcontroller circuit that controls the entire circuit;

[0041] 2. Control circuit for controlling the operation of the conveyor belt motor, alarm, indicator lights and feeding mechanism;

[0042] 3. Car control circuit for controlling the operation of the car;

[0043] 4. Light simulation circuit for simulating the flow of materials on a conveyor belt;

[0044] Power supply circuit 5 provides power to the entire control circuit;

[0045] The microcontroller circuit is connected to the operation control circuit, the trolley control circuit, and the lighting simulation circuit, respectively.

[0046] like Figure 2 As shown, the microcontroller circuit includes a microcontroller chip, which is an STC15W4K32S4. Pin 20 of the microcontroller chip is connected to the positive terminals of several feedback diodes, and the negative terminals of the feedback diodes are connected to the feedback signal of the operation control circuit.

[0047] The single-chip microcomputer circuit is the core part of the circuit control. The single-chip microcomputer chip U501 adopts a 40-pin single-chip microcomputer STC15W4K32S4. The chip has high performance in an 8-bit chip, so that it can meet the control function of the entire circuit. The pin number is connected with each circuit. The 20th pin is connected with each input and output terminal through a plurality of feedback diodes. The pin can generate an interrupt to realize the priority execution of the input circuit action. When the input signal changes, the single-chip microcomputer immediately interrupts and executes the action. Since the virtual simulation consumes a large amount of resources of the single-chip microcomputer, if the interrupt structure is not used, the input signal cannot be responded in time, and the user will not have a good application experience. The 15th pin of the single-chip microcomputer is connected with a 24-volt power supply through a resistor. It can detect whether the system circuit is working in a 24V running state or a 5V detection state.

[0048] As shown in Figure 3 , Figure 4 and Figure 5 , the running control circuit includes three conveyor belt control units, one buzzer unit, two red and green light control units, ten state feedback units, two valve control units and three 74HC595 chips in series; the 14th pin of the first 74HC595 chip of the running control circuit is connected with the 33rd pin of the single-chip microcomputer chip, the 14th pin of each subsequent 74HC595 chip is connected with the 9th pin of the previous 74HC595 chip, and the 1-7th pins and the 15th pin of each 74HC595 chip are output terminals.

[0049] The first conveyor belt control unit includes a diode D103, a diode DA1 and a MOS tube Q9. The positive electrode of the diode D103 is connected with the 17th pin of the single-chip microcomputer chip, the negative electrode of the diode D103 is connected with an external PLC as Y1 end, the drain electrode of the MOS tube Q9, the negative electrode of a feedback diode and the positive electrode of a power supply of the conveyor belt motor B101, the source electrode of the MOS tube Q9 is grounded, the gate electrode of the MOS tube Q9 is connected with an output terminal of a 74HC595 chip, the positive electrode of the power supply of the conveyor belt motor B101 is connected with the negative electrode of the diode DA1, and the positive electrode of the diode DA1 is connected with a 5V power supply; the structures of the other two conveyor belt control units are the same as the first one, and the motors of the second and third conveyor belts are controlled. The conveyor belt motor B101 is the motor of the first conveyor belt.

[0050] The structure of the buzzer unit is that the conveyor belt motor in the conveyor belt control unit is replaced by an active buzzer, and a resistor R103 is connected in series between the positive electrode of the active buzzer and the diode; the active buzzer is controlled by the buzzer unit.

[0051] The first traffic light unit includes a light emitting diode D101, the light emitting diode D101 is a green light emitting diode, the positive electrode of the light emitting diode D101 is connected to the negative electrode of a diode D108 through a resistor R101, the positive electrode of the diode D108 is connected to a power supply 5V, the negative electrode of the light emitting diode D101 is connected to the drain of a MOS tube Q107, the source of the MOS tube Q107 is grounded, and the gate of the MOS tube Q107 is connected to an output terminal of a 74HC595 chip; the negative electrode of the light emitting diode D101 is also connected to the negative electrode of a diode D110, and the negative electrode of the diode D110 is connected to the 38th pin of the single-chip microcomputer chip; another red-green light unit replaces the green light emitting diode of the first red-green unit with a red light emitting diode.

[0052] The first state feedback unit includes a MOS tube Q201, the drain of the MOS tube Q201 is connected to a power supply 24V through a resistor R201, the gate of the MOS tube Q201 is connected to an output terminal of a 74HC595 chip, the source of the MOS tube Q201 is grounded, and the drain of the MOS tube Q201 is also connected to an external PLC, the negative electrode of a diode D211 and the negative electrode of a feedback diode as X1 terminal, and the positive electrode of the diode D211 is connected to the 42nd pin of the single-chip microcomputer chip; the structures of the remaining state feedback units are the same as those of the first state feedback unit; each state feedback unit respectively feeds back signals such as fullness of a conveying belt 1, fullness of a conveying belt 2, fullness of a conveying belt 3, fullness of a hopper, lack of material in the hopper, completion of material feeding, positioning of a trolley, fullness of the trolley, material feeding of the trolley, and material receiving of the trolley to the single-chip microcomputer chip.

[0053] The first valve control unit includes a MOS tube Q17, the drain of the MOS tube Q17 is connected to an external PLC, a first end of a discharging valve and the negative electrode of a diode D106 as Y4 terminal, the second end of the discharging valve is connected to the negative electrode of a diode D115, the positive electrode of the diode D115 is connected to a power supply 5V, the positive electrode of the diode D106 is connected to the 28th pin of the single-chip microcomputer chip, the source of the MOS tube Q17 is grounded, and the gate of the MOS tube Q17 is connected to an output terminal of a 74HC595 chip; the structures of the other valve control units are the same as those of the first valve control unit. The two valve control units respectively control the discharging valve and the discharging valve.

[0054] The operation control circuit includes motion control of three conveying belt motors, control of road traffic lights, control of hopper discharging and discharging valve discharging, and these circuits enable the entire device to run. The circuit uses field effect tubes, which work cooperatively through control signals of a single-chip microcomputer; at the same time, the control signals are fed back to the single-chip microcomputer end through diodes, so that the single-chip microcomputer can receive the control signals.

[0055] Take the conveyor belt 1 control as an example, field effect tube Q102 control conveyor belt motor B101 movement, single-chip microcomputer control movement, single field effect tube Q9 end for high level, field effect tube switch switch on, motor operation, Q9 end for low level when the motor stops. When using PLC external signal control, Y1 end. When the control signal is low, the motor runs, which can exactly match the control signal of PLC, and the single-chip microcomputer can receive the signal of whether Y1 works through diode D103. Diode DA1 can prevent the internal 5-volt power supply from being burned out when the user connects the signal incorrectly, such as inserting a high voltage into Y1.

[0056] The signal of the virtual part is fed back to the output end through the circuit. Take the full material of the conveyor belt 1 as an example. When the analog part has objects accumulated on the conveyor belt 1, the single-chip microcomputer outputs high level to Q1, and the field effect tube Q201 is turned on, outputting low level at X1 end as a feedback signal connected to the input end of PLC, forming an interaction, and this level also exactly matches the input end of PLC. In the feedback signal, an indicating lamp is also installed to indicate the state of the output signal of the output sensor. J31-J37 in the circuit are button switches, which are used as analog signal inputs to facilitate students to test the function of the circuit.

[0057] As shown in Figure 6 The trolley control circuit comprises a main chip and two limit switches. The main chip is L9110. The first end of the limit switch S5.a is connected to the 6th pin of the main chip and the 9th pin of the single-chip microcomputer chip. The first end of the limit switch S6.a is connected to the 7th pin of the main chip and the 8th pin of the single-chip microcomputer chip. The second ends of the two limit switches are grounded. The 6th pin of the main chip is also connected to the positive electrode of the diode D3.a through the resistor R7.a. The 7th pin of the main chip is also connected to the power supply 5V through the resistor R8.a. The 6th pin of the main chip is also connected to the negative electrode of the diode D3.a. The negative electrode of the diode D3.a is connected to the 7th pin of the single-chip microcomputer chip. The negative electrode of the diode D3.a is also connected to the gate of the MOS tube Q3.a. The drain of the MOS tube Q3.a is connected to the 7th pin of the main chip. The source of the MOS tube Q3.a is grounded. The 1st pin and the 4th pin of the main chip are connected to the trolley.

[0058] The trolley control circuit is controlled by a main chip L9110, and the circuit is composed of a field effect transistor Q3, left and right limit switches S5.a and S6.a and the like. When starting, the negative pole M13 of diode D3.a is at low level, at this time, through D3.a, the 6th pin IA of the main chip is at low level, the 7th pin IB is at high level, and the trolley runs to the origin. When the trolley runs to the right end (origin), the switch S6.a is touched, the 7th pin of M14, i.e. the 7th pin of the main chip, becomes low level, at this time, the 6th pin and the 7th pin of the main chip are both at low level, and the trolley stops running. When M13 is at high level, the 7th pin is at low level, and the 6th pin is at high level, the trolley runs to the right, when the limit switch S5.a is touched, the 6th pin and the 7th pin of the chip are both at low level, and the trolley stops running, so that M13 can control the left and right running of the trolley.

[0059] The light simulation circuit comprises a first light simulation unit and a second light simulation unit. Figure 7 、 Figure 8 and Figure 9 As shown in the first light simulation unit, a plurality of 74HC595 chips are connected in series, the 14th pin of the first 74HC595 chip of the first light simulation unit is connected to the 30th pin of the single-chip microcomputer chip, the 14th pin of each subsequent 74HC595 chip is connected to the 9th pin of the previous 74HC595 chip, the 11th pin of each 74HC595 chip is connected to the 32nd pin of the single-chip microcomputer chip, the 12th pin of each 74HC595 chip is connected to the 31st pin of the single-chip microcomputer chip, the 1st pin, the 2nd pin, the 3rd pin, the 4th pin, the 5th pin, the 6th pin, the 7th pin and the 15th pin of each 74HC595 chip are respectively connected to the positive pole of a light-emitting diode through a resistor, and the negative poles of the light-emitting diodes are grounded. Figure 10 As shown in the second light simulation unit, a plurality of 74HC595 chips are connected in series, the 14th pin of the first 74HC595 chip of the second light simulation unit is connected to the 23rd pin of the single-chip microcomputer chip, the 14th pin of each subsequent 74HC595 chip is connected to the 9th pin of the previous 74HC595 chip, the 11th pin of each 74HC595 chip is connected to the 25th pin of the single-chip microcomputer chip, the 12th pin of each 74HC595 chip is connected to the 24th pin of the single-chip microcomputer chip, the 1st pin, the 3rd pin, the 5th pin and the 7th pin of each 74HC595 chip are respectively connected to the positive pole of a red light-emitting diode, the 2nd pin, the 4th pin, the 6th pin and the 15th pin of each 74HC595 chip are respectively connected to the positive pole of a green light-emitting diode, and the negative poles of the red light-emitting diodes and the green light-emitting diodes are grounded through resistors.

[0060] The part circuit is a material operation simulation circuit, which is formed by a plurality of serially connected light emitting diodes. The control circuit is completed by an HC595 circuit, and the light emitting regularity of the control circuit is controlled by a single-chip microcomputer. The virtual and real integrated effect is generated by cooperating with the operation of the real object. The chip HC595 can output the serially input data in parallel through each port, so that the light emitting diodes generate the consistent action, and the effect of lighting together or extinguishing together is achieved, so that the virtual simulation is completed.

[0061] As shown in Figure 11 The power supply circuit includes a relay K601 and a relay K602, the first ends of the coils of the relay K601 and the relay K602 are connected to the negative electrode of a diode D602, the positive electrode of the diode D602 is connected to an external 24V power supply, and the second ends of the coils of the relay K601 and the relay K602 are grounded; the static contact of the relay K601 is connected to the negative electrode of the diode D602, the normally open moving contact of the relay K601 provides a 24V voltage for a control circuit, the static contact of the relay K602 is connected to an external 5V power supply, and the normally open moving contact of the relay K602 provides a 5V voltage for the control circuit; the positive electrode of a diode D605 is grounded, the negative electrode of the diode D602 is connected to the positive electrode of a diode D604, and the negative electrode of the diode D604 is connected to an external 24V power supply through a resistor R601.

[0062] The power supply input control end has two relays and an indicating light diode, and the rated voltage of the two relays is 24V. When the input voltage is 5V, the corresponding relay cannot be attracted, and the 5V voltage is output by the normally closed contact of K601, so that the circuit works in the 5V state. When the input voltage is 24V, each relay is attracted, and the normally open contact of K601 is output to the VCC24V end. At the same time, VCC5V0 is connected to VCC5V, which is the power supply of the running circuit. When the positive and negative poles of the input power supply are connected reversely, the input of the power supply is blocked due to the existence of the diode D601, and the light emitting diode D605 emits light to indicate that the input of the power supply is connected reversely.

[0063] The specific embodiments described in the present document are only examples to illustrate the spirit of the present invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the principles of the present invention or exceed the scope defined by the appended claims.

[0064] Although the terms such as single-chip microcomputer circuit, operation control circuit and the like are used frequently in the present document, the possibility of using other terms is not excluded. The use of these terms is only for the convenience of describing and explaining the essence of the present invention; any kind of additional limitation by interpreting them is contrary to the spirit of the present invention.

Claims

1. A control circuit for a tertiary conveyor belt material flow simulation apparatus, characterized by, The utility model relates to a kind of control system of material feeding device, including: Single-chip microcontroller circuit for controlling the whole circuit; Operation control circuit for controlling conveyor motor, alarm, indicator light and feeding mechanism; Trolley control circuit for controlling the operation of trolley; Light simulation circuit for simulating the flow state of material on the conveyor belt; Power supply circuit for providing power supply for the whole control circuit; The single-chip microcontroller circuit is connected with the operation control circuit, trolley control circuit and the light simulation circuit respectively. The single-chip microcontroller circuit includes a single-chip microcomputer chip, which is STC15W4K32S4.

2. The control circuit for a tertiary conveyor belt material flow simulation apparatus according to claim 1, wherein, The first 74HC595 chip of the operation control circuit is connected with the 33rd pin of the single-chip microcomputer chip, and the 14th pin of each subsequent 74HC595 chip is connected with the 9th pin of the previous 74HC595 chip. The first conveyor control unit includes diode D103, diode DA1 and MOS tube Q9. The buzzer unit is structured by replacing the conveyor motor with an active buzzer in the conveyor control unit and connecting a resistor R103 in series between the positive electrode of the active buzzer and the diode. The first red-green light unit includes light-emitting diode D101, which is a green light-emitting diode. The negative electrode of the light-emitting diode D101 is also connected with the negative electrode of diode D110, and the negative electrode of diode D110 is connected with the 38th pin of the single-chip microcomputer chip. The other red-green light unit replaces the green light-emitting diode in the first red-green unit with a red light-emitting diode. The first state feedback unit comprises a MOS tube Q201, the drain of the MOS tube Q201 is connected with the power supply 24V through a resistor R201, the gate of the MOS tube Q201 is connected with an output end of a 74HC595 chip, the source of the MOS tube Q201 is grounded, and the drain of the MOS tube Q201 is also connected with an external PLC, the negative electrode of a diode D211 and the negative electrode of a feedback diode, and the positive electrode of the diode D211 is connected with the 42th pin of the single-chip microcomputer chip; the rest of the state feedback units are the same as the first state feedback unit. The first valve control unit comprises a MOS tube Q17, the drain of the MOS tube Q17 is connected with an external PLC, the first end of a discharge valve and the negative electrode of a diode D106, the second end of the discharge valve is connected with the negative electrode of a diode D115, the positive electrode of the diode D115 is connected with the power supply 5V, the positive electrode of the diode D106 is connected with the 28th pin of the single-chip microcomputer chip, the source of the MOS tube Q17 is grounded, and the gate of the MOS tube Q17 is connected with an output end of a 74HC595 chip; the rest of the valve control units are the same as the first valve control unit.

3. The control circuit for a tertiary conveyor belt material flow simulation apparatus according to claim 1 or 2, characterized in that The trolley control circuit comprises a main chip and two limit switches, the main chip is L9110, the first end of the limit switch S5.a is connected with the 6th pin of the main chip and the 9th pin of the single-chip microcomputer chip, the first end of the limit switch S6.a is connected with the 7th pin of the main chip and the 8th pin of the single-chip microcomputer chip, the second ends of the two limit switches are grounded, the 6th pin of the main chip is also connected with the power supply 5V through a resistor R7.a, the 7th pin of the main chip is also connected with the power supply 5V through a resistor R8.a, the 6th pin of the main chip is also connected with the positive electrode of a diode D3.a, the negative electrode of the diode D3.a is connected with the 7th pin of the single-chip microcomputer chip, the negative electrode of the diode D3.a is also connected with the gate of a MOS tube Q3.a, the drain of the MOS tube Q3.a is connected with the 7th pin of the main chip, the source of the MOS tube Q3.a is grounded, and the 1st pin and the 4th pin of the main chip are connected with the trolley.

4. The control circuit for a tertiary conveyor belt material flow simulation apparatus according to claim 1, wherein, The light simulation circuit comprises a first light simulation unit and a second light simulation unit, the first light simulation unit comprises a plurality of 74HC595 chips connected in series, the 14th pin of the first 74HC595 chip of the first light simulation unit is connected to the 30th pin of the single-chip microcomputer chip, the 14th pin of each subsequent 74HC595 chip is connected to the 9th pin of the previous 74HC595 chip, the 11th pin of each 74HC595 chip is connected to the 32nd pin of the single-chip microcomputer chip, the 12th pin of each 74HC595 chip is connected to the 31st pin of the single-chip microcomputer chip, the 1st pin, the 2nd pin, the 3rd pin, the 4th pin, the 5th pin, the 6th pin, the 7th pin and the 15th pin of each 74HC595 chip are respectively connected to the anode of a light-emitting diode through a resistor, and the cathode of the light-emitting diode is grounded; the second light simulation unit comprises a plurality of 74HC595 chips connected in series, the 14th pin of the first 74HC595 chip of the second light simulation unit is connected to the 23rd pin of the single-chip microcomputer chip, the 14th pin of each subsequent 74HC595 chip is connected to the 9th pin of the previous 74HC595 chip, the 11th pin of each 74HC595 chip is connected to the 25th pin of the single-chip microcomputer chip, the 12th pin of each 74HC595 chip is connected to the 24th pin of the single-chip microcomputer chip, the 1st pin, the 3rd pin, the 5th pin and the 7th pin of each 74HC595 chip are respectively connected to the anode of a red light-emitting diode, the 2nd pin, the 4th pin, the 6th pin and the 15th pin of each 74HC595 chip are respectively connected to the anode of a green light-emitting diode, and the cathodes of the red light-emitting diode and the green light-emitting diode are grounded through a resistor.

5. The control circuit for a tertiary conveyor belt material flow simulation apparatus as set forth in claim 1, wherein, The power supply circuit comprises a relay K601 and a relay K602, the first end of the coils of the relay K601 and the relay K602 is connected to the negative electrode of a diode D602, the positive electrode of the diode D602 is connected to an external 24V power supply, and the second end of the coils of the relay K601 and the relay K602 is grounded; the static contact of the relay K601 is connected to the negative electrode of the diode D602, the normally open moving contact of the relay K601 provides a 24V voltage for the control circuit, the static contact of the relay K602 is connected to an external 5V power supply, and the normally open moving contact of the relay K602 provides a 5V voltage for the control circuit; the positive electrode of a diode D605 is grounded, the negative electrode of the diode D602 is connected to the positive electrode of a diode D604, and the negative electrode of the diode D604 is connected to an external 24V power supply through a resistor R601.

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