Dispensing device system based on single-chip microcomputer control

Abstract

The utility model discloses a dispensing device system based on single-chip microcomputer control, and relates to the field of medical equipment. According to the system, a power supply module supplies power to the whole system by converting an external power supply, a single-chip microcomputer control panel receives an external instruction through key control, starts up to enter a self-cleaning mode, enters a standby mode after cleaning is finished, presses down a forward key, starts a brushless motor, starts a forward electromagnetic valve and pneumatically moves forwards; a retreat key is pressed down, a brushless motor is started, a retreat electromagnetic valve is started, and pneumatic operation is backward; the motor mode is switched by pressing the inching key, and the motor mode can only be pneumatically forward by pressing the forward key, and the motor mode is pneumatically forward by a specified distance. Valve terminal control is replaced by single-chip microcomputer control, control complexity is reduced, system stability is improved, the system structure is simpler, upgrading and maintenance are facilitated, cost is reduced, and mechanical delay is reduced; and the power supply module and the single chip microcomputer control module which are high in integration level and modularized are used, so that the equipment is more portable.

Description

Technical Field

[0001] This utility model relates to the technical field of medicine dispensing devices, and in particular to a medicine dispensing device system based on single-chip microcomputer control. Background Technology

[0002] Currently, in the process of medication preparation by medical staff, a syringe is generally used to draw up the liquid medication and inject it into a medicine bag or powder vial to mix the liquid or dissolve the powdered medication. This is especially problematic during peak medication preparation periods, when medical staff are working frequently and the workload is heavy. To reduce this workload, a dispensing device is used. This device mainly uses a valve island connected to a solenoid valve, and the solenoid valve's switching mechanism controls the dispensing of the medication.

[0003] Chinese patent CN112032362B discloses a valve island base for a dispensing device, which employs a three-channel design and at least three solenoid valves to enable the dissolving device to pump out the liquid medicine.

[0004] Chinese patent CN113530809A discloses a control method for a pneumatic control system of a dispensing device, which connects various solenoid valves to each other and to different quick-connect fittings, filter silencers, etc. These components are installed on the manifold body, which has first, second, third, and fourth channels as well as multiple mounting holes and through holes to form different interfaces for connecting various components.

[0005] However, the number of solenoid valves controlled by valve islands or manifolds in existing technologies is still relatively large, resulting in high structural complexity, low overall system stability, high mechanical delay, large overall equipment size, high manufacturing cost, and difficulty in inspection and maintenance once a failure occurs. Utility Model Content

[0006] The technical problem to be solved by this utility model is how to provide a drug dispensing control system with a more reasonable structure, fewer solenoid valves, and lower cost.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A microcontroller-based dispensing system includes a power module, a microcontroller control module, an air pump module, a solenoid valve, an air filter, and an air appliance. The power module is connected to an external 220V AC power supply, and its output is connected to one end of a power switch button. The power switch button is connected to an input terminal of the microcontroller control board and the positive terminal of an LED. The ground terminal of the power module is connected to the ground terminal of the microcontroller control board and the negative terminal of the LED. The microcontroller control board has three external buttons: forward, backward, and mode. The motor speed control knob is integrated into the microcontroller control board. The output terminal of the microcontroller control board is connected to the air pump module and the air exchange solenoid valve. The air outlet of the air pump module is connected to the air filter and the air appliance's air passage via a solenoid valve. The air inlet of the air pump module is connected to the air filter and the air appliance's air passage via another solenoid valve.

[0009] The microcontroller control module includes: a power supply unit, a programming unit, a speed control unit, a control unit, and a drive unit.

[0010] The power supply unit includes: pin 1 of CN2 is connected to U3; the other end of U3 is connected to Zener diodes D1 and D2 respectively; the other ends of D1 and D2 are connected to the positive terminals of capacitors C1 and C2 respectively, and the IN interface of U2, and are connected as VCC output terminals to the positive terminals of capacitors C7 and C6, pin 1 of CN1, and pin 5 of CN1; the other end of C6 is grounded; the other end of C7 is grounded; the other end of C1 is grounded; the other end of C2 is grounded; the GND pin of U2 is grounded; the OUT pin of U2 is connected to resistor R9 and one end of capacitor C3 respectively, and is used as the output terminal of 5V power supply; the other end of R9 is connected to the positive terminal of LED1; the negative terminal of LED1 is grounded; the other end of C3 is grounded; the output terminal of 5V power supply is connected in parallel with capacitor C4 and connected to the VDD pin of U1; the other end of C4 is grounded.

[0011] The programming unit includes: pin 1 of H1 is connected to the 5V power output of the power supply unit; pin 2 of H1 is connected to pin P1.6 of U1; pin 3 of H1 is connected to pin P0.2 of U1; pin 4 of H1 is connected to pin P2.0 of U1; and pin 5 of H1 is grounded.

[0012] The speed control unit includes: two sliding terminals of the speed control potentiometer R14 are connected to one end of R2; the input terminal of R14 is connected to the 5V voltage output of the power supply unit, and the output terminal is grounded; the other end of R2 is connected to the P1.7 pin of capacitor C5 and U1 respectively; the other end of C5 is grounded.

[0013] The control unit includes: a forward button connected to pin 6 of CN2; a backward button connected to pin 5 of CN2; a mode button connected to pin 4 of CN2; the other ends of the three buttons connected to pin 3 of CN2; pin 6 of CN2 connected to resistors R5 and R8 respectively; pin 5 of CN2 connected to resistors R4 and R7 respectively; pin 4 of CN2 connected to resistors R3 and R6 respectively; the other end of R8 connected to the 5V output of the power supply unit; the other end of R7 connected to the 5V output of the power supply unit; the other end of R6 connected to the 5V output of the power supply unit; the other end of R5 connected to pin P1.1 of bidirectional electrostatic discharge protection diodes D5 and U1 respectively; the other end of R4 connected to pin P1.0 of bidirectional electrostatic discharge protection diodes D4 and U1 respectively; the other end of R3 connected to pin P0.0 of bidirectional electrostatic discharge protection diodes D3 and U1 respectively; and the other ends of D3, D4, and D5 grounded.

[0014] Pin 6 of the drive unit CN1 is connected to the collector of transistor Q3 and the cathode of diode D6, respectively. The anode of D6 is connected to the emitter of Q3 and resistor R13, respectively. The other end of R13 is grounded. The base of Q3 is connected to resistor R12. The other end of R12 is connected to capacitor C8 and pin P1.5 of U1, respectively. The other end of C8 is grounded. Pins 1 and 5 of CN1 are connected to the power supply unit. Pin 2 of CN1 is grounded. Pin 3 of CN1 is connected to resistor R10. The other end of R10 is connected to the collector of transistor Q2. The emitter of Q2 is grounded, and the base is connected to resistor R11. The other end of R11 is connected to pin P1.4 of U1. Pins 1, 2, and 3 of CN1 are connected to the brushless motor. Pins 5 and 6 of CN1 are connected to the solenoid valve.

[0015] Preferably, the power module is the mp-h48s12-ft model power module.

[0016] The air pump module consists of a brushless motor and an air pump.

[0017] The air filter is an SFE model breathable filter.

[0018] The beneficial effects of adopting the above technical solution are as follows: The power module uses the MP-H48S12-FT model, which has a power conversion efficiency of 88%. By improving battery efficiency, energy costs can be reduced. This model of power module has a high degree of integration, which can effectively reduce the size of the equipment. The output of the microcontroller control board is connected to the air pump module and the air exchange solenoid valve. The microcontroller directly controls the air pump module and the solenoid valve, and the number of solenoid valves is reduced to two, which reduces the mechanical delay of the equipment, reduces the complexity of the system, and reduces the size of the equipment. The microcontroller control system has a self-test function, which facilitates maintenance in case of failure.

[0019] This invention uses a microcontroller to replace valve island control. Compared to the multi-electrode control of a valve island, the system complexity is reduced, the system stability is higher, the system structure is simpler, and maintenance and repair are easier. Using a domestically produced microcontroller control board reduces costs; the number of solenoid valves is reduced, mechanical delay is lower, and control is more precise; the use of a highly integrated, modular power supply module and microcontroller control module effectively reduces the size and weight of the equipment, making it more portable; the power supply module has a high power conversion rate, reducing energy costs; and due to the programmable nature of the microcontroller system, it can be adapted to meet specific needs. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the dispensing system based on single-chip microcomputer control proposed in this utility model;

[0022] Figure 2 This is a flowchart of the dispensing system based on single-chip microcomputer control proposed in this utility model;

[0023] Figure 3 This is the gas path diagram of the medicine dispensing system based on single-chip microcomputer control proposed in this utility model;

[0024] Figure 4 This utility model presents a circuit schematic diagram of a single-chip microcomputer control module;

[0025] Figure 5 This is a magnified view of part B, which involves the circuit schematics of the microcontroller control module's programming unit and speed control unit.

[0026] Figure 6 This is a magnified view of part C, which involves the circuit schematics of the control unit and power supply unit of the microcontroller control module;

[0027] Figure 7 This is a magnified view of part A, which involves the circuit schematic of the drive unit of the microcontroller control module. Detailed Implementation

[0028] To make the technical solution and advantages of this utility model clearer, the utility model will be further described below.

[0029] This utility model discloses a medicine dispensing system based on single-chip microcomputer control.

[0030] like Figure 1-2 The power module converts 220V AC to 12V DC. The power switch button controls whether the microcontroller board is powered on. When the switch button is pressed, the microcontroller board is powered on, the LED indicator lights up, and the system self-cleans for 5 seconds. During this time, the microcontroller board controls the motor to move forward pneumatically, self-cleaning the gas in the enclosed environment of the air device, ensuring all gas passes through the air filter. Then, it enters standby mode, awaiting commands. When the forward button is pressed, the microcontroller receives the command, and its output connects to the brushless motor and the air exchange solenoid valve, controlling the air pump to move. When the solenoid valve at the air inlet is open and the solenoid valve at the air outlet is closed, the pneumatic motor moves forward. Pressing the back button at this time sends a command to the microcontroller, whose output connects to the brushless motor and the air exchange solenoid valve, controlling the air pump to move. The solenoid valve at the air outlet then opens, and the solenoid valve at the air outlet closes, causing the pneumatic motor to move backward. Pressing the mode button switches the motor mode to micro-motion mode. In this mode, the pneumatic motor can only move forward; pressing the forward button moves it forward a specified distance. The speed control knob adjusts the motor's rotation speed, thus changing the pneumatic speed. After the current command is completed, the system returns to standby mode. The micro-motion mode facilitates the venting operation after extracting the liquid medicine, and the speed control knob can adapt to complex situations in actual operation.

[0031] The MP-H48S12-FT power module is selected as the system power source, converting the external 220V AC power to 12V DC power. The MP-H48S12-FT power module offers numerous advantages, such as a wide operating temperature range (from -25℃ to 60℃), high power conversion efficiency (88%), reduced electricity costs, and energy savings; and high modularity, effectively reducing equipment size and making it more portable. The power supply status of the microcontroller board is controlled via a power control button. Figure 6 The microcontroller control panel receives power input and button commands through the CN2 terminal block. The buttons are connected to pins 3, 4, 5, and 6 of CN2. Pin 3 of CN2 is grounded. Pins 4, 5, and 6 of CN2 are connected to resistors R3, R4, and R5, respectively. Resistors R3, R4, and R5 are in turn connected to pins P0.0, P1.0, and P1.1 of the microcontroller. A 5V voltage is connected to one end of resistors R3, R4, and R5 through a protective resistor. By opening and closing the buttons, the level of the control pins is adjusted, enabling the microcontroller to receive corresponding commands.

[0032] like Figure 6 Pin 1 of CN2 is connected to an external 12V power input, internally connected to fuse U3. The voltage is then stabilized by two parallel Zener diodes. The output 12V voltage serves as the input to pins 11 and 5 of CN1, and is filtered by two capacitors C1 and C2 in parallel before being input to the IN terminal of the 78M05. After passing through the 78M05, a stable 5V power supply is output, filtered by capacitor C3 in parallel, and connected to resistor R9 and LED1 to indicate the operating status of the power supply unit. The power supply unit uses the 78M05 three-terminal voltage regulator integrated circuit to provide a stable power supply to the onboard controller, preventing malfunctions caused by external voltage fluctuations. The LED indicator facilitates easy viewing of the control board's operating status, making maintenance and repair convenient.

[0033] like Figure 5 Pin 1 of the programming unit H1 is connected to a 5V power supply, pin 5 is grounded, pin 2 is connected to pin P1.6 of the microcontroller U1, pin 3 is connected to pin P0.2 of U1, and pin 4 is connected to pin P2.0. The microcontroller program can be programmed through this unit, and the microcontroller system can be modified. The control system can be adapted to different needs, and it is also convenient for future upgrades.

[0034] like Figure 5 The speed control unit uses an external speed control knob to control a speed control potentiometer, which sends commands to the microcontroller. The input of the speed control potentiometer is connected to a 5V power supply, and the output is grounded. Its two sliding terminals are connected to one end of resistor R2, and a capacitor C5 is connected in parallel for filtering. This capacitor is then connected to pin P1.7 of U1. Rotating the speed control knob changes the output voltage of the speed control potentiometer at R2, thereby changing the voltage level of pin P1.7, which is used to send commands to the microcontroller. The speed control button is integrated into the microcontroller control board, effectively reducing the size of the device. In practical use, it can be adaptively adjusted according to different personal habits and external environments, making it more adaptable to complex external environments.

[0035] like Figure 7Pins 1, 2, and 3 of CN1 are connected to the brushless motor; pins 5 and 6 of CN1 are connected to the solenoid valve. Pin 1 provides power input to the brushless motor, pin 2 is grounded, and pin 3 controls the motor speed; pins 5 and 6 provide power input to the solenoid valve. The VCC output of the power supply unit is connected to pin 5 of CN1 to provide power input to the brushless motor; the VCC output is filtered by two capacitors in parallel and then connected to pin 1 of CN1 to continuously power the motor. Pin P1.5 of the microcontroller is filtered by a capacitor in parallel and then connected to resistor R12. The other end of R12 is connected to the base of transistor Q3, and the collector of Q3 is connected to pin 6 of CN1. The microcontroller controls the output voltage of pin P1.5 to control the collector output of transistor Q3, thereby controlling the solenoid valve. Pin P1.4 of the microcontroller is connected to the base of transistor Q2 through resistor R11. The emitter of Q2 is grounded, and the collector is connected to pin 3 of CN1, controlling the motor speed in the same way. By directly controlling the motor and solenoid valves with a microcontroller, the number of solenoid valves is reduced, the system complexity is lowered, the system stability is effectively improved, and mechanical delay is reduced. Due to the high integration of the microcontroller, the weight and size of the equipment can be effectively reduced, making it more portable and adaptable to more complex situations in actual use.

[0036] like Figure 3 The brushless motor and air pump together form the air pump module. The air pump's outlet and inlet are connected to the air filter and air appliance respectively via solenoid valves. The air filter uses an SFE model breathing filter, which utilizes a self-cleaning mode upon startup to purify the air in the air path and air appliance, ensuring that the cleanliness inside the equipment meets medical standards.

Claims

1. A dispensing system based on a microcontroller, characterized in that, The system includes a power module, a microcontroller control module, an air pump module, a solenoid valve, an air filter, and an air appliance. The power module is connected to an external 220V AC power supply, with its output connected to one end of a power switch button. The power switch button is connected to an input terminal of the microcontroller control board and the positive terminal of an LED. The ground terminal of the power module is connected to the ground terminal of the microcontroller control board and the negative terminal of the LED. The microcontroller control board has three external buttons: forward, backward, and mode. A motor speed control knob is integrated into the microcontroller control board. The output terminal of the microcontroller control board is connected to the air pump module and the air exchange solenoid valve. The air outlet of the air pump module is connected to the air filter and the air appliance's air passage via a solenoid valve. The air inlet of the air pump module is connected to the air filter and the air appliance's air passage via another solenoid valve.

2. The dispensing system based on single-chip microcomputer control according to claim 1, characterized in that, The microcontroller control module includes: a power supply unit, a programming unit, a speed control unit, a control unit, and a drive unit.

3. The dispensing system based on single-chip microcomputer control according to claim 2, characterized in that, The power supply unit includes: pin 1 of CN2 is connected to U3; the other end of U3 is connected to Zener diodes D1 and D2 respectively; the other ends of D1 and D2 are connected to the positive terminals of capacitors C1 and C2 respectively, and the IN interface of U2, and are used as VCC output terminals connected to the positive terminals of capacitors C7 and C6, pin 1 of CN1, and pin 5 of CN1; the other end of C6 is grounded; the other end of C7 is grounded; the other end of C1 is grounded; the other end of C2 is grounded; the GND pin of U2 is grounded; the OUT pin of U2 is connected to resistor R9 and one end of capacitor C3 respectively, and is used as the output terminal of 5V power supply; the other end of R9 is connected to the positive terminal of LED1; the negative terminal of LED1 is grounded; the other end of C3 is grounded; the output terminal of the 5V power supply is connected in parallel with capacitor C4 and connected to the VDD pin of U1; the other end of C4 is grounded; CN1 and CN2 use DB128V-5.08-6P-GN-S type terminal blocks; U2 uses 78M05 three-terminal voltage regulator integrated circuit; U1 uses N76E003AT20-T type microcontroller; U3 uses 1812l200 / 33gr type fuse.

4. A dispensing system based on a single-chip microcomputer control according to claim 2, characterized in that, The programming unit includes: pin 1 of H1 is connected to the 5V power output of the power supply unit; pin 2 of H1 is connected to pin P1.6 of U1; pin 3 of H1 is connected to pin P0.2 of U1; pin 4 of H1 is connected to pin P2.0 of U1; and pin 5 of H1 is grounded. The H1 uses a PZ254V-11-05P pin header.

5. A dispensing system based on a single-chip microcomputer control according to claim 2, characterized in that, The speed control unit includes: two sliding terminals of the speed control potentiometer R14 are connected to one end of R2; the input terminal of R14 is connected to the 5V voltage output of the power supply unit, and the output terminal is grounded; the other end of R2 is connected to the P1.7 pin of capacitor C5 and U1 respectively; the other end of C5 is grounded.

6. A dispensing system based on a single-chip microcomputer control according to claim 2, characterized in that, The control unit includes: a forward button connected to pin 6 of CN2; a backward button connected to pin 5 of CN2; a mode button connected to pin 4 of CN2; the other ends of the three buttons connected to pin 3 of CN2; pin 6 of CN2 connected to resistors R5 and R8 respectively; pin 5 of CN2 connected to resistors R4 and R7 respectively; pin 4 of CN2 connected to resistors R3 and R6 respectively; the other end of R8 connected to the 5V output of the power supply unit; the other end of R7 connected to the 5V output of the power supply unit; the other end of R6 connected to the 5V output of the power supply unit; the other end of R5 connected to pin P1.1 of bidirectional electrostatic discharge protection diodes D5 and U1 respectively; the other end of R4 connected to pin P1.0 of bidirectional electrostatic discharge protection diodes D4 and U1 respectively; the other end of R3 connected to pin P0.0 of bidirectional electrostatic discharge protection diodes D3 and U1 respectively; and the other ends of D3, D4, and D5 grounded.

7. A dispensing system based on a single-chip microcomputer control according to claim 2, characterized in that, The driving unit includes: pin 6 of CN1 is connected to the collector of transistor Q3 and the cathode of diode D6, respectively; the anode of D6 is connected to the emitter of Q3 and resistor R13, respectively; the other end of R13 is grounded; the base of Q3 is connected to resistor R12; the other end of R12 is connected to capacitor C8 and pin P1.5 of U1, respectively; the other end of C8 is grounded; pins 1 and 5 of CN1 are connected to the power supply unit; pin 2 of CN1 is grounded; pin 3 of CN1 is connected to resistor R10; the other end of R10 is connected to the collector of transistor Q2; the emitter of Q2 is grounded, and the base is connected to resistor R11; the other end of R11 is connected to pin P1.4 of U1; pins 1, 2, and 3 of CN1 are connected to the brushless motor; pins 5 and 6 of CN1 are connected to the solenoid valve.

8. A dispensing system based on a single-chip microcomputer control according to claim 1, characterized in that, The power module is an MP-H48S12-FT model power module.

9. A dispensing system based on a single-chip microcomputer control according to claim 1, characterized in that, The air pump module consists of a brushless motor and an air pump.

10. A dispensing system based on a single-chip microcomputer control according to claim 1, characterized in that, The air filter is a breathable filter.

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