Embedded fine-control powder filling control system

Abstract

The utility model discloses an embedded fine-control powder filling control system which comprises a feeding frequency converter for controlling the rotating speed of a motor of a feeding system, a discharging frequency converter for controlling the rotating speed of a motor of a discharging system and a weighing scale for weighing powder in a material bag, and the feeding frequency converter, the discharging frequency converter and the weighing scale are all electrically connected with a single chip microcomputer through a 485 communication module. The device further comprises a power module, a signal input module and a signal output module, the two ends of the power module are electrically connected with the single-chip microcomputer and the power supply end respectively, the two ends of the signal input module are electrically connected with the single-chip microcomputer and the key control module respectively, and the two ends of the signal output module are electrically connected with the single-chip microcomputer and the indicator lamp module respectively. According to the powder filling machine, the time delay of adjustment of the feeding speed and the discharging speed can be effectively reduced, adjustment of the multi-section discharging speed can be achieved according to different feedback real-time weights, and the accuracy of powder filling in the weight aspect is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of powder filling control, specifically to an embedded precision powder filling control system. Background Technology

[0002] In existing technologies, during the filling and packaging process of nano-calcium powder and related micro-particle powders, the air resistance inside the packaging bag or material bag can cause significant differences in air filling and powder flowability. Traditional filling machines use a delayed shutdown method during the final filling stage, resulting in inaccurate final filling weight. Therefore, accurate weighing and packaging of powders has always been a challenge in the industry. Moreover, the commonly used PLC as the main control device has limited algorithm control capabilities, and due to its cyclic scanning operation, there is a certain delay in multi-level communication. Communication during the weighing process can sometimes be delayed, leading to problems in response during precise weighing control. Utility Model Content

[0003] To address the aforementioned shortcomings of existing technologies, this utility model provides an embedded precision powder filling control system that reduces data transmission delay during the powder filling process, improves filling accuracy, and enhances the stability of the control system.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0005] An embedded precision powder filling control system is provided, which includes a feeding frequency converter for controlling the speed of the feeding system motor, a discharging frequency converter for controlling the speed of the discharging system motor, and a weighing scale for weighing the powder in the material bag. The feeding frequency converter, the discharging frequency converter, and the weighing scale are all electrically connected to a single-chip microcomputer through a 485 communication module.

[0006] It also includes a power module, a signal input module, and a signal output module. The two ends of the power module are electrically connected to the microcontroller and the power supply terminal, respectively. The two ends of the signal input module are electrically connected to the microcontroller and the button control module, respectively. The two ends of the signal output module are electrically connected to the microcontroller and the indicator light module, respectively.

[0007] Furthermore, the power module includes a power chip U3, which is connected to the output terminal of the power module via an inductor L1. The output terminal of the power module is connected to a microcontroller. Between the inductor L1 and the power module, there are a grounded capacitor C56, a capacitor C20, a resistor R15, a variable resistor R16, and a capacitor C21. Between the power chip U3 and the inductor L1, there is a diode D7, which is also grounded. Between the variable resistor R16 and the ground terminal, there is a resistor R23. The capacitor C21 is connected between the resistor R23 and the variable resistor R16.

[0008] Furthermore, the signal input module includes a relay JQC, which is connected to a control button via a transistor Q4. Terminal 4 of the relay JQC is connected to a microcontroller. An LED6 and a diode D11 are sequentially positioned between the collector of transistor Q4 and the relay JQC. Diode D11 is connected to terminal 2 of the relay JQC, and LED6 is connected to terminal 2 of the relay JQC via a resistor R25. Furthermore, the signal output module includes a phototransistor U13, one end of which is connected to the microcontroller, and the other end is connected to a transistor Q12. The collector of transistor Q12 is connected to a relay, and the relay is connected to a signal indicator light group.

[0009] Furthermore, the 485 communication module includes a 485 communication chip U6, which is connected to the microcontroller via a transistor Q3.

[0010] The beneficial effects of this utility model are as follows: The control system of this solution is integrated with a microcontroller, a 485 communication module, a signal input module, and a signal output module. The microcontroller communicates with the feeding inverter and the discharging inverter via 485 communication and can collect material bag weight information in real time. This facilitates the adjustment of feeding and discharging speeds in conjunction with the feeding inverter and the discharging inverter, effectively reducing the delay in feeding and discharging speed adjustment. Based on the different real-time weight feedback, multiple discharging speed adjustments can be achieved, greatly improving the accuracy of powder filling in terms of weight. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the embedded precision powder filling control system.

[0012] Figure 2 This is a schematic diagram of an embedded precision powder filling system.

[0013] Figure 3 This is the circuit diagram of the power supply module.

[0014] Figure 4 This is the circuit diagram for the signal input module.

[0015] Figure 5 This is the circuit diagram for the signal output module.

[0016] Figure 6 This is the circuit diagram for the 485 communication module.

[0017] The components include: 1. Feeding hopper; 2. Feeding system motor; 3. Discharging system motor; 4. Material bag; 5. Weighing scale. Detailed Implementation

[0018] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0019] like Figure 1 As shown, an embedded precision powder filling control system includes a feeding frequency converter for controlling the speed of the feeding system motor 2, a discharging frequency converter for controlling the speed of the discharging system motor 3, and a weighing scale 5 for weighing the powder in the material bag 4. The feeding frequency converter, the discharging frequency converter, and the weighing scale 5 are all electrically connected to a single-chip microcomputer through a 485 communication module.

[0020] It also includes a power supply module, a signal input module, and a signal output module. The two ends of the power supply module are electrically connected to the microcontroller and the power supply terminal, respectively. The two ends of the signal input module are electrically connected to the microcontroller and the button control module, respectively. The two ends of the signal output module are electrically connected to the microcontroller and the indicator light module, respectively. In this embodiment, the microcontroller used is an STM32F103C8T6 microcontroller.

[0021] The control system of this solution integrates a microcontroller, a 485 communication module, a signal input module, and a signal output module. The microcontroller communicates with the feeding inverter and the discharging inverter via 485 communication and can collect the weight information of the material bag in real time. This facilitates the adjustment of the feeding and discharging speeds in conjunction with the feeding inverter and the discharging inverter, effectively reducing the delay in adjusting the feeding and discharging speeds. Based on the different real-time weight feedbacks, multiple stages of discharging speed adjustment can be achieved, greatly improving the accuracy of powder filling in terms of weight.

[0022] In this embodiment, as Figure 3 As shown, the power module includes a power chip U3, which is connected to the output terminal of the power module via an inductor L1. The output terminal of the power module is connected to a microcontroller. Between inductor L1 and the power module, there are, in sequence, a grounded capacitor C56, a capacitor C20, a resistor R15, a variable resistor R16, and a capacitor C21. A diode D7 is placed between power chip U3 and inductor L1, and diode D7 is also grounded. A resistor R23 is placed between the variable resistor R16 and the ground terminal. Capacitor C21 is connected between resistor R23 and variable resistor R16. The power module provides a stable power supply to the entire control system, ensuring the stability of the power supply to the control system.

[0023] In this embodiment, as Figure 4As shown, the signal input module includes a relay JQC, which is connected to the control button via a transistor Q4. Terminal 4 of the relay JQC is connected to the microcontroller. An LED6 and a diode D11 are sequentially positioned between the collector of transistor Q4 and the relay JQC. Diode D11 is connected to terminal 2 of the relay JQC, and LED6 is connected to terminal 2 of the relay JQC via a resistor R25. The control button includes a stop button and a start button. The signal input module processes the signals from the stop and start buttons and inputs them to the microcontroller, thereby stably controlling the stop or start of the feeding system motor 2 and the discharging system motor 3. In this embodiment, as... Figure 5 As shown, the signal output module includes a phototransistor U13. One end of the phototransistor U13 is connected to the microcontroller, and the other end is connected to a transistor Q12. The collector of transistor Q12 is connected to a relay, and the relay is connected to a signal indicator light group. In this embodiment, the signal indicator light group includes green, yellow, and red lights. Different colored lights represent different states of the powder filling system. When the powder filling reaches the standard, the stop light (green light) illuminates, indicating that the powder filling is stopped and the system enters standby mode. When the stop button is manually pressed, the stop light (yellow light) illuminates, and the equipment enters emergency stop mode. When the start button is manually pressed, the power red light illuminates.

[0024] In this embodiment, as Figure 6 As shown, the 485 communication module includes a 485 communication chip U6, which is connected to the microcontroller via transistor Q3. This embodiment uses the 485 communication module as a dedicated communication bus to connect the microcontroller to the feeding inverter, discharging inverter, and weighing scale 5. Unless the device interface hardware is damaged or the bus line is disconnected, the bus will maintain good communication performance and a high data reception success rate. Furthermore, the communication speed is high, and because it is a dedicated wired communication line, there are no other signals besides the communication signal, reducing the probability of interference from external signals.

[0025] like Figure 2 The diagram shown illustrates the powder filling process of the powder filling system. The process of controlling the powder filling process using this embodiment includes:

[0026] Powder is added to the feeding system from the feeding hopper 1. When the operator presses the start button, the feeding system motor 2 and the discharging system motor 3 start to rotate. The powder begins to be poured into the material bag 4, and the weighing scale 5 begins to weigh the powder in the material bag 4.

[0027] The 485 communication module sends the weight data of the powder in the material bag 4 to the microcontroller in real time. At this time, it sends a full-speed powder filling signal to the frequency converter and the discharge frequency converter. The feeding frequency converter and the discharge frequency converter control the feeding system motor 2 and the discharge system motor 3 to rotate at full speed.

[0028] When the weight of the powder in the material bag 4 reaches 80% of the target weight, the remaining 20% ​​of the powder weight is fed in three feeding speed intervals. The feeding frequency converter and the discharging frequency converter control the speed of the feeding system motor 2 and the discharging system motor 3 to decrease sequentially, so as to realize feeding in three feeding speed intervals.

Claims

1. An embedded precision powder filling control system, characterized in that, It includes a feeding frequency converter that controls the speed of the motor in the feeding system, a discharging frequency converter that controls the speed of the motor in the discharging system, and a weighing scale for weighing the powder in the material bag. The feeding frequency converter, the discharging frequency converter, and the weighing scale are all electrically connected to a single-chip microcomputer via a 485 communication module. It also includes a power supply module, a signal input module, and a signal output module. The two ends of the power supply module are electrically connected to the microcontroller and the power supply terminal, respectively. The two ends of the signal input module are electrically connected to the microcontroller and the button control module, respectively. The two ends of the signal output module are electrically connected to the microcontroller and the indicator light module, respectively.

2. The embedded precision powder filling control system according to claim 1, characterized in that, The power module includes a power chip U3, which is connected to the output terminal of the power module via an inductor L1. The output terminal of the power module is connected to a microcontroller. Between the inductor L1 and the power module, there are a grounded capacitor C56, a capacitor C20, a resistor R15, a variable resistor R16, and a capacitor C21. A diode D7 is placed between the power chip U3 and the inductor L1, and the diode D7 is also grounded. A resistor R23 is placed between the variable resistor R16 and the ground terminal. The capacitor C21 is connected between the resistor R23 and the variable resistor R16.

3. The embedded precision powder filling control system according to claim 1, characterized in that, The signal input module includes a relay JQC, which is connected to a control button via a transistor Q4. The fourth terminal of the relay JQC is connected to a microcontroller. An LED6 and a diode D11 are sequentially arranged between the collector of the transistor Q4 and the relay JQC. The diode D11 is connected to the second terminal of the relay JQC, and the LED6 is connected to the second terminal of the relay JQC via a resistor R25.

4. The embedded precision powder filling control system according to claim 1, characterized in that, The signal output module includes a phototransistor U13, one end of which is connected to a microcontroller and the other end is connected to a transistor Q12. The collector of the transistor Q12 is connected to a relay, and the relay is connected to a signal indicator lamp group.

5. The embedded precision powder filling control system according to claim 1, characterized in that, The 485 communication module includes a 485 communication chip U6, which is connected to the microcontroller via a transistor Q3.

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