A material conveying system

Abstract

This application provides a material conveying system, including: a main control device and a drive device; the main control device includes at least one control chip, which sends power control signals to multiple drive devices under its control; the drive device includes a drive circuit and an accumulation device; the drive circuit receives the power control signals and outputs corresponding power to make the accumulation device move according to a preset pattern; wherein the multiple drive devices are sequentially arranged corresponding to the accumulation device to form a conveying link for conveying materials. The material conveying system provided by this application can achieve flexible configuration of the conveying link by adding or adjusting the configuration of the control chip and changing the combination of the drive devices, thereby improving the scalability of the material conveying system.

Description

Technical Field

[0001] This application relates to the field of industrial automation control, and more particularly to a material conveying system. Background Technology

[0002] Roller conveyors are widely used in electronics, automotive, express delivery sorting, and smart manufacturing, and are one of the important pieces of equipment for industrial automation control. Traditional roller conveyors often employ a combination of mechanical transmission and basic electrical control, relying on relay logic or a single controller to achieve functions such as start / stop and speed regulation. This results in low control accuracy and makes it difficult to meet the requirements of modern multi-station collaborative control. To address this issue, roller conveyor architectures based on Programmable Logic Controllers (PLCs) have gradually become the mainstream technology. However, these solutions often employ centralized control, with sensors and actuators connected via hardwiring, leading to complex wiring and poor anti-interference capabilities. Furthermore, traditional PLC programs are fixed, making it difficult to quickly adapt to process changes, and insufficient modularity makes it difficult to expand the equipment to suit actual production conditions. Therefore, there is an urgent need for a material conveying system that can be flexibly configured and whose conveying strategies can be adjusted according to actual production conditions. Utility Model Content

[0003] This application provides a material conveying system to address the shortcomings of existing material conveying systems, such as inflexibility in configuration and difficulty in expansion.

[0004] In view of the above problems, in a first aspect, embodiments of this application provide a material conveying system, including: a main control device and a drive device;

[0005] The main control device includes at least one control chip, which is used to send power control signals to the multiple drive devices controlled by itself.

[0006] The driving device includes a driving circuit and an accumulation device; the driving circuit is used to receive the power control signal and output corresponding power to make the accumulation device move in a preset manner; wherein, the plurality of driving devices are arranged sequentially with respect to the accumulation device to form a conveying link for conveying materials.

[0007] In conjunction with the first aspect, in one possible implementation, it further includes: a detection device;

[0008] The detection device is installed on the accumulation device and is used to detect whether there is material above the accumulation device and send a corresponding detection signal to the control chip corresponding to the accumulation device.

[0009] In conjunction with the first aspect, in one possible implementation, the control chip is further configured to receive a detection signal and send a power start signal to a second accumulation device that has a first preset positional relationship with the first accumulation device corresponding to the detection signal and is located downstream of the first accumulation device; or

[0010] It is also used to receive a detection signal and send a power start signal to a second accumulation device that has a first preset positional relationship with the first accumulation device corresponding to the detection signal and is located downstream of the first accumulation device; and send a power stop signal to a third accumulation device that has a second preset positional relationship with the first accumulation device and is located upstream of the first accumulation device.

[0011] The power control signals include a power start signal and a power stop signal; the power start signal has a higher execution priority than the power stop signal.

[0012] In conjunction with the first aspect, in one possible implementation, the detection device corresponds one-to-one with the accumulation device;

[0013] For the fourth accumulation device at the upstream end of the conveying link, a corresponding detection device is set at the starting position of the fourth accumulation device; for the fifth accumulation device at the downstream end of the conveying link, a corresponding detection device is set at the end position of the fifth accumulation device.

[0014] The control chip corresponding to the fourth accumulator is also used to send a power start signal to the fourth accumulator after receiving the detection signal sent by the detection device corresponding to the fourth accumulator.

[0015] The control chip corresponding to the fifth accumulator is also used to send a power off signal to the fifth accumulator after receiving a detection signal sent by the detection device corresponding to the fifth accumulator; the power control signal includes a power start signal and a power off signal.

[0016] In conjunction with the first aspect, in one possible implementation, the accumulation device includes: a roller motor and at least one transfer roller driven by the roller motor;

[0017] The drum motor is connected to the output terminal of the corresponding drive circuit, which outputs a corresponding electrical signal after receiving a power start signal.

[0018] The roller motor is used to output kinetic energy of corresponding power according to the electrical signal to drive the transmission roller to rotate;

[0019] The drive circuit is also used to stop outputting electrical signals to stop the rotation of the drum motor after receiving a power off signal;

[0020] The power control signals include power start signals and power stop signals.

[0021] In conjunction with the first aspect, in one possible implementation, it further includes: a sampling device;

[0022] The sampling device is located at the output end of the drive circuit and is used to sample the electrical signal output by the drive circuit to the corresponding drum motor and send the sampling result to the corresponding control chip to determine the load condition of the drum motor.

[0023] The control chip is also used to receive the sampling results; send a power adjustment signal to the corresponding drive circuit to adjust the output power of the drive circuit, and control the load of the corresponding drum motor to maintain balance.

[0024] In conjunction with the first aspect, in one possible implementation, the drive circuit includes: a drive chip, a power device, and a motor power supply;

[0025] The driving chip is used to receive the power control signal and output a corresponding modulation signal to the power device;

[0026] The motor power supply is connected to the power device and is used to supply power to the drum motor through the power device;

[0027] The power device includes multiple switching devices connected in a preset connection manner; the switching devices are used to switch the switching state according to the modulation signal, convert the electrical signal input to the motor power supply into a target electrical signal, and output it to the drum motor.

[0028] In conjunction with the first aspect, in one possible implementation, the main control device includes at least two control chips, and the main control device further includes a main control chip;

[0029] The main control chip is connected to the at least two control chips via a bus to synchronize the timing of the at least two control chips.

[0030] In conjunction with the first aspect, in one possible implementation, the main control device includes at least two control chips connected via a bus;

[0031] The control chip is also used to receive a detection signal for the downstream accumulator among the multiple drive devices it controls; and to send a corresponding inter-chip communication signal to the adjacent control chip downstream of the control chip; and to receive the inter-chip communication signal sent by the adjacent control chip upstream of the control chip, and to send a power start signal to the upstream accumulator among the multiple drive devices it controls.

[0032] The power control signal includes: a power start signal.

[0033] In conjunction with the first aspect, in one possible implementation, the main control device includes at least two control chips connected via a bus;

[0034] The control chip is also used to receive a detection signal for the upstream accumulator among the multiple drive devices it controls; send a corresponding inter-chip communication signal to the adjacent control chip upstream of the control chip; and receive the inter-chip communication signal sent by the adjacent control chip downstream of the control chip, and send a power shutdown signal to the downstream accumulator among the multiple drive devices it controls.

[0035] The power control signal includes: a power off signal.

[0036] In conjunction with the first aspect, in one possible implementation, the accumulation device further includes: a braking device; the system further includes: an energy storage device;

[0037] The braking device is disposed on the at least one transmission roller driven by the roller motor; the energy storage device is connected to multiple braking devices.

[0038] The braking device is used to stop the transmission roller after the corresponding roller motor stops working, and to convert the kinetic energy of the transmission roller during the stopping process into electrical energy and store it in the energy storage device.

[0039] The beneficial effects of the embodiments of this application include:

[0040] This application provides a material conveying system, including: a main control device and a drive device; the main control device includes at least one control chip, which sends power control signals to multiple drive devices under its control; the drive device includes a drive circuit and an accumulation device; the drive circuit receives the power control signals and outputs corresponding power to make the accumulation device move according to a preset pattern; wherein the multiple drive devices are sequentially arranged corresponding to the accumulation devices to form a conveying link for conveying materials. The material conveying system provided by this application, where the main control device can include at least one control chip, allows for flexible configuration of the conveying link by adding or adjusting the configuration of the control chip and correspondingly changing the combination of drive devices. This improves the scalability of the material conveying system. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of the material conveying system provided in the embodiments of this application;

[0042] Figure 2This is one of the control schematic diagrams of the accumulation device provided in the embodiments of this application;

[0043] Figure 3 This is the second schematic diagram of the accumulation device control provided in the embodiments of this application;

[0044] Figure 4 This is the third schematic diagram of the accumulation device control provided in the embodiments of this application;

[0045] Figure 5 This is a schematic diagram of the accumulation device structure provided in the embodiments of this application;

[0046] Figure 6 This is a schematic diagram of the driving circuit structure provided in an embodiment of this application;

[0047] Figure 7 This is a diagram illustrating the architecture of a multi-control chip material conveying system provided in an embodiment of this application.

[0048] Figure 8 This is a schematic diagram of signal transmission in a multi-control chip material conveying system provided in an embodiment of this application. Detailed Implementation

[0049] This application provides a material conveying system. The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this application. Furthermore, the embodiments and features described herein can be combined with each other unless otherwise specified.

[0050] This application provides a material conveying system, such as... Figure 1 As shown, it includes: a main control device 1 and a drive device 2;

[0051] The main control device 1 includes at least one control chip 11, which is used to send power control signals to multiple drive devices 2 controlled by itself.

[0052] The driving device 2 includes a driving circuit 21 and an accumulation device 22. The driving circuit 21 is used to receive power control signals and output corresponding power to make the accumulation device 22 move in a preset manner. Among them, multiple driving devices 2 are arranged sequentially to correspond to the accumulation device 22 to form a conveying link for conveying materials.

[0053] In this embodiment of the application, the material conveying system can be a comprehensive device that can move and transfer materials according to a predetermined path.

[0054] In this application, the control chip 11 can be a system-on-a-chip (SoC) with functions such as signal input / output, information communication, execution of calculation programs, and data storage. The main control device 1 can include multiple chips, and each control chip 11 can output power control signals to the drive device 2 it controls. The number of drive devices 2 that each control chip 11 can control is affected by the number of input / output ports of the control chip 11. When the number of drive devices 2 that need to be controlled exceeds the number of input / output ports of the control chip 11, multiple control chips 11 can be combined and communicate with each other through a bus to achieve linkage control, thereby increasing the number of drive devices 2 that can be controlled by the main control device 1. In the actual production process, if it is necessary to expand or adjust the material conveying system of the production line, the new and old material conveying systems can be seamlessly connected by adding control chips 11; and the production line can be flexibly adjusted and modified.

[0055] The drive unit 2, as the main functional execution device of the material conveying system, may include a drive circuit 21 and an accumulation device 22. The drive circuit 21 may be an electronic device that controls the operation of the accumulation device 22. The drive circuit 21 can output power or stop outputting power according to the power control signal sent by the control chip 11, thereby controlling the start or stop of the accumulation device 22; it can also output different power according to the power control signal, thereby adjusting the speed, torque and direction of rotation of the accumulation device 22.

[0056] The accumulating device 22 is a unit in the material conveying system that transports materials. The accumulating device 22 can move the materials above it in a set direction, and can also change the speed of the material movement by varying its own output rotation speed and torque. Multiple accumulating devices 22 are arranged along a pre-set path to form a material conveying link, allowing the materials to move from one end to the other along this conveying link.

[0057] The material conveying system provided in this application may include a single conveying link or a conveying network composed of multiple conveying links.

[0058] In summary, the material conveying system provided in this application, compared with traditional conveying systems in related technologies, has the advantages of flexible control, easy expansion, and convenient connection between new and old equipment.

[0059] In another embodiment provided in this application, such as Figure 1 As shown, it also includes: detection device 3;

[0060] The detection device 3 is installed on the accumulation device 22 and is used to detect whether there is material above the accumulation device 22 and send a corresponding detection signal to the control chip 11 corresponding to the accumulation device 22.

[0061] In this embodiment, the detection device 3 can be a sensor capable of detecting the position of an object. Each accumulation device 22 is equipped with a corresponding sensor, which can determine whether the material has moved above the corresponding accumulation device 22. The detection device 3 can also send corresponding detection signals to the corresponding control chip 11 so that the control chip 11 knows the current position of the material at any time.

[0062] In practical applications, sensors can be selected as photoelectric sensors, radar sensors, vision sensors, or contact sensors, depending on the actual working scenario.

[0063] In another embodiment provided in this application, the control chip 11 is further configured to receive a detection signal and send a power start signal to a second accumulation device that has a first preset positional relationship with the first accumulation device corresponding to the detection signal and is located downstream of the first accumulation device; or

[0064] It is also used to receive a detection signal and send a power start signal to a second accumulation device that has a first preset positional relationship with the first accumulation device and is located downstream of the first accumulation device; and send a power stop signal to a third accumulation device that has a second preset positional relationship with the first accumulation device and is located upstream of the first accumulation device.

[0065] Power control signals include power start signals and power stop signals; the power start signal has a higher execution priority than the power stop signal.

[0066] In the embodiments of this application, such as Figure 2 As shown, when materials are conveyed in the material conveying system, the accumulation devices from upstream to downstream are: a third accumulation device, a first accumulation device, and a second accumulation device. The first accumulation device and the second accumulation device have a first preset positional relationship, and the first accumulation device and the third accumulation device have a second preset positional relationship. It should be noted that upstream and downstream in this application can refer to the upstream and downstream of the conveying link, and materials can be transferred from the upstream to the downstream of the conveying link.

[0067] Taking an example where both the first and second preset positional relationships are adjacent, at a certain moment during the material transport process, the material moves from the third accumulation device to the first accumulation device. The detection device 22 installed on the first accumulation device detects the detection signal and sends it to the corresponding control chip 11, causing the control chip 11 to pre-start the second accumulation device before the material moves to it. It can be seen that, in order to save energy while ensuring smooth material transport, the accumulation devices can be opened in advance; the first accumulation device can be opened when the material moves to the third accumulation device. To allow for even greater advance opening time, the first and second preset positional relationships can also be intermittent, which will not be elaborated here.

[0068] In one possible implementation, the conveyor chain can be shut down once the material transfer is complete. In another possible implementation, to save energy, as material is transferred from upstream to downstream of the conveyor chain, the downstream accumulation device can control the upstream accumulation device to shut down. That is, the control chip 11 can send a power start signal to the corresponding drive circuit to control the first and second accumulation devices, putting them into operation to provide power for the material movement. After the material leaves the third accumulation device, the control chip can also send a power stop signal to the corresponding drive circuit to control the third accumulation device, stopping its operation to save energy. However, when there are multiple materials on the conveyor chain, the accumulation device may simultaneously receive a power start signal from its upstream accumulation device and a power stop signal from its downstream accumulation device. Since the power start signal has higher priority than the power stop signal, in this case, to ensure smooth subsequent material transfer and avoid frequent start-stop cycles, the power stop signal can be ignored.

[0069] Furthermore, the pre-start timing of the second accumulation device can be determined based on factors such as the length of the first accumulation device and the material movement speed. This ensures that when the material reaches the junction of the first and second accumulation devices, the second accumulation device smoothly transfers the material at the same speed as the first accumulation device. The control chip can send a power start signal at the corresponding time point after determining the start timing to activate the second accumulation device; alternatively, a time marker can be added to the power start signal, and the corresponding drive circuit, upon receiving the power start signal, will activate the second accumulation device according to the time marker. This method achieves smooth material movement between different accumulation devices and avoids energy waste caused by idling of the accumulation devices.

[0070] In another embodiment provided in this application, the detection device and the accumulation device correspond one-to-one;

[0071] For the fourth accumulation device at the very top of the conveying link, the corresponding detection device is set at the starting position of the fourth accumulation device; for the fifth accumulation device at the very bottom of the conveying link, the corresponding detection device is set at the end position of the fifth accumulation device.

[0072] The control chip corresponding to the fourth accumulator is also used to send a power start signal to the fourth accumulator after receiving the detection signal sent by the detection device corresponding to the fourth accumulator.

[0073] The control chip corresponding to the fifth accumulator is also used to send a power shutdown signal to the fifth accumulator after receiving the detection signal sent by the detection device corresponding to the fifth accumulator.

[0074] Power control signals include power start signals and power stop signals.

[0075] In the embodiments of this application, such as Figure 3 As shown, when a material is detected by the detection device corresponding to the fourth accumulation device, it indicates that the conveying link needs to start the transportation operation. The control chip sends a power start signal to the drive circuit corresponding to the fourth accumulation device, and the drive circuit controls the accumulation device to start.

[0076] In practical applications, the detection device corresponding to the fourth accumulation device may also include: a pressure sensor for determining the weight of the material and / or a sensor for determining the size of the material. The running speed of the material in the conveying link may also be preset so that the power of the corresponding roller motor can be determined according to the material pressure and / or material size and running speed, so that the material can run stably on the accumulation device.

[0077] like Figure 4 As shown, when a material is detected by the detection device corresponding to the fifth accumulation device, it indicates that the material has reached the end of this conveying link. The control chip 11 can send a power shutdown signal to the fifth accumulation device to stop the fifth accumulation device from running.

[0078] In practical applications, the timing for shutting down the fifth accumulation device can be determined based on its length and the material's movement speed, so that the material can move to its final target position after the power is interrupted.

[0079] In another embodiment provided in this application, such as Figure 5 As shown, the accumulation device 22 includes: a roller motor 221 and at least one transfer roller 222 driven by the roller motor 221;

[0080] The drum motor 221 is connected to the output terminal of the corresponding drive circuit 21. The drive circuit 21 is used to output a corresponding electrical signal after receiving the power start signal.

[0081] The drum motor 221 is used to output kinetic energy of corresponding power according to the electrical signal to drive the transmission drum 222 to rotate;

[0082] The drive circuit 21 is also used to stop outputting electrical signals to stop the rotation of the drum motor 221 after receiving a power off signal;

[0083] Power control signals include power start signals and power stop signals.

[0084] In this embodiment, each accumulation device 22 may include a roller motor 221. The roller motor 221 is connected to the drive circuit 21 corresponding to the accumulation device 22 and is controlled by the drive circuit 21, serving as the power source for all the transfer rollers 222 in the accumulation device 22. Here, the roller motor 221 may be a motor installed outside the roller to provide power to the roller, or it may be a motor installed inside the roller to drive the roller to move.

[0085] The transmission between the roller motor 221 and other transmission rollers 222 in the accumulation device 22 can be achieved using transmission methods such as chain drive, belt drive, or gear drive.

[0086] The electrical signal can be single-phase AC, three-phase AC, or DC power supplied to the rolling motor. The specific electrical signal can be determined based on the selection of the roller motor 221.

[0087] In another embodiment provided in this application, such as Figure 5 As shown, the material conveying system also includes: sampling device 4;

[0088] The sampling device 4 is set at the output end of the corresponding drive circuit 21. It is used to sample the electrical signal output by the drive circuit 21 to the corresponding drum motor 221 and send the sampling result to the corresponding control chip 11 to determine the load condition of the drum motor 221.

[0089] The control chip 11 is also used to receive sampling results; send a power adjustment signal to the corresponding drive circuit 21 to adjust the output power of the drive circuit 21, and control the load of the corresponding roller motor 221 to maintain balance.

[0090] In this embodiment, the sampling device 4 can be a current sensor that samples the current value of the electrical signal output by the drive circuit 21 to the roller motor 221. Upon receiving the sampling result (i.e., the aforementioned current value), the control chip 11 can determine the current load status of the roller motor 221 based on the current value.

[0091] If the sampled current value is large, it indicates that the motor torque is large. According to the following formula (1), the larger the torque T, the greater the output power P, and the greater the load on the motor. In order to maintain the stability of the motor output power P, the angular velocity ω of the motor rotation can be reduced, and the further increase of torque T can be limited.

[0092] P=T×ω (1)

[0093] If the sampled current value is low, it indicates that the current torque of the motor is low. The angular velocity ω of the motor rotation can be appropriately increased to increase the torque T requirement while keeping the output power P constant.

[0094] Based on the above principle, the control chip 11 can determine the corresponding angular velocity of the corresponding roller motor 221 according to the current value, and send a power adjustment signal to the corresponding roller motor 221 to change the output power of the roller motor 221.

[0095] In another embodiment provided in this application, such as Figure 6 As shown, the drive circuit includes: a drive chip 211, a power device 212, and a motor power supply 213;

[0096] The driver chip 211 is used to receive power control signals and output corresponding modulation signals to the power device 212;

[0097] The motor power supply 213 is connected to the power device 212 and is used to supply power to the drum motor 221 through the power device 212.

[0098] The power device 212 includes multiple switching devices connected in a preset connection manner; the switching devices are used to switch the switching state according to the modulation signal, convert the electrical signal input by the motor power supply 213 into a target electrical signal, and output it to the drum motor 221.

[0099] In this embodiment, the drive circuit may include a drive chip 211 for receiving power control signals and outputting corresponding modulation signals to the power device 212. The power device 212 flexibly controls the voltage and current waveforms of the electrical signal from the motor power supply 213 input to the power device 212 according to the modulation signal, thereby obtaining the target electrical signal. This target electrical signal is then transmitted to the drum motor 221, thereby enabling power supply to the drum motor 221 and control of its output power.

[0100] In this application, the driver chip 211 can be a chip with the functions of recognizing power control signals and generating modulation signals. In one possible implementation, the modulation signal can be a digital signal based on controlling the average voltage of the device by adjusting the pulse width (i.e., a pulse width modulation (PWM) signal). The driver chip 211 can change the voltage value of the electrical signal output to the roller motor 221 by changing the proportion of the high level in each pulse cycle of the PWM signal to the entire pulse cycle (i.e., the duty cycle). For example, the voltage of the motor power supply 213 input to the power device 212 is V. in Then the voltage V output to the drum motor 221 out =D×V in Where D is the duty cycle of the PWM signal; duty cycle t on The high-level time is the duration of one pulse cycle, and T is the duration of one pulse cycle.

[0101] The power device 212 can be an H-bridge drive circuit, consisting of four switching elements arranged in an H-shape, divided into left and right arms. Each arm contains upper and lower switching elements. The load (i.e., the roller motor 221) can be connected between the midpoint of the left arm (between the upper and lower switching elements) and the midpoint of the right arm. By controlling the on / off combinations of the switching elements, the direction of the circuit passing through the load can be changed, realizing the forward, reverse, and stop rotation of the roller motor 221. The switching elements can quickly change their on / off states according to the modulation signal, thereby changing the equivalent supply voltage and current (i.e., the target electrical signal) supplied to the motor to achieve speed regulation. In one possible implementation, the switching elements can be selected as gallium nitride (GaN) switching devices (e.g., gallium nitride field-effect transistors (GaN FETs)). Compared to traditional silicon-based power devices such as insulated gate bipolar transistors (IGBTs), GaN switching devices can achieve higher switching speeds, have better temperature stability, and lower on-resistance.

[0102] In another embodiment provided in this application, the main control device includes at least two control chips, and the main control device further includes: a main control chip;

[0103] The main control chip is connected to at least two control chips 11 via a bus to synchronize the timing of the at least two control chips 11.

[0104] In this embodiment, for situations where the conveying system requires control by two or more control chips 11, a master control chip can be set in the main control device, and the control chips 11 are connected to the master control chip via a bus. The master control chip enables communication between different control chips 11; it can also generate a unified clock signal and send it to different control chips 11, ensuring that the timing of different control chips 11 is the same, thereby making the entire system operate stably and smoothly.

[0105] Here is a method such as Figure 7 The diagram shown is an example of a material conveying system architecture. The diagram illustrates a material conveying system with multiple control chips, where the control chips are connected to the main control chip via a bus.

[0106] In another embodiment provided in this application, the main control device includes at least two control chips 11, and the at least two control chips 11 are connected through a bus.

[0107] The control chip 11 is also used to receive the detection signal of the downstream accumulator 22 among the multiple drive devices 2 controlled by itself; and send the corresponding inter-chip communication signal to the adjacent control chip 11 downstream of the control chip 11; and receive the inter-chip communication signal sent by the adjacent control chip 11 upstream of the control chip 11, and send the power start signal to the upstream accumulator 22 among the multiple drive devices 2 controlled by itself.

[0108] Power control signals, including: power start signal.

[0109] In the embodiments of this application, such as Figure 8 As shown, in order to achieve coordinated control of the drive devices 2 controlled by different control chips 11, the control chip 11 can send inter-chip communication signals to the control chip 11 downstream of it, or it can receive inter-chip communication signals sent by the control chip 11 upstream of it. In one possible implementation, if two adjacent accumulator devices 22 are controlled by different control chips 11, the detection device 3 corresponding to the upstream accumulator device 22 sends a detection signal to the corresponding upstream control chip 11. The upstream control chip 11 sends an inter-chip communication signal to the downstream control chip 11 corresponding to the downstream accumulator device 22 based on the detection signal. The downstream control chip 11 receives the inter-chip communication signal sent from the upstream control chip 11 and starts the corresponding accumulator device 22 based on the inter-chip communication signal.

[0110] In another embodiment provided in this application, the main control device includes at least two control chips 11, and the at least two control chips 11 are connected through a bus.

[0111] The control chip 11 is also used to receive the detection signal of the upstream accumulator 22 among the multiple drive devices 2 controlled by itself; send the corresponding inter-chip communication signal to the adjacent control chip 11 upstream of the control chip 11; and receive the inter-chip communication signal sent by the adjacent control chip 11 downstream of the control chip 11, and send the power shutdown signal to the downstream accumulator 22 among the multiple drive devices 2 controlled by itself.

[0112] Power control signals, including: power off signal.

[0113] In the embodiments of this application, such as Figure 8 As shown, in order to achieve coordinated control of the drive devices 2 controlled by different control chips 11, the control chip 11 can send inter-chip communication signals to the control chip 11 located upstream, or receive inter-chip communication signals sent by the control chip 11 located downstream. In one possible implementation, if two adjacent accumulator devices 22 are controlled by different control chips 11, the detection device 3 corresponding to the downstream accumulator device 22 sends a detection signal to the corresponding downstream control chip 11. The downstream control chip 11 sends an inter-chip communication signal to the upstream control chip 11 corresponding to the upstream accumulator device 22 based on the detection signal. The upstream control chip 11 receives the inter-chip communication signal sent from the downstream control chip 11 and shuts down the corresponding accumulator device 22 based on the inter-chip communication signal.

[0114] In another embodiment provided in this application, the accumulating device 22 further includes: a braking device; the material conveying system further includes: an energy storage device.

[0115] A braking device is installed on at least one transmission roller driven by a roller motor; an energy storage device is connected to multiple braking devices.

[0116] The braking device is used to stop the transmission roller after the corresponding roller motor stops working, and to convert the kinetic energy of the transmission roller during the stopping process into electrical energy and store it in the energy storage device.

[0117] In this embodiment, an energy storage device can also be provided for the material conveying system. The energy storage device can be connected to a braking device installed on each of the accumulation devices 22. The braking device can be installed at the transmission roller directly connected to the roller motor. The braking device can include a control unit, a clutch device, and an energy conversion device. The control unit controls the clutch device according to a power control signal. The clutch device can be a gear or chain drive device that can transmit the kinetic energy of the transmission roller to the energy conversion device and can be controlled by the control unit to change its connection state with the transmission roller. The energy conversion device can be an electronic device including a generator, rectifier, and inverter that can convert kinetic energy into electrical energy and transmit the electrical energy to the energy storage device.

[0118] When the accumulator 22 is operating normally, the clutch disengages from the main shaft of the transfer roller, and power transmission is cut off. When braking is required (for example, when the accumulator 22 receives a power stop signal), the control unit controls the clutch to engage with the main shaft of the transfer roller, transferring kinetic energy to the energy conversion device, achieving energy recovery while decelerating.

[0119] Energy storage devices can be supercapacitors, chemical batteries, or other hybrid energy storage solutions.

[0120] Through the above description of the embodiments, those skilled in the art can clearly understand that the embodiments of this application can be implemented in hardware or by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solutions of the embodiments of this application can be embodied in the form of a software product. This software product can be stored in a non-volatile storage medium (which may be a CD-ROM, USB flash drive, portable hard drive, etc.) and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0121] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing this application.

[0122] Those skilled in the art will understand that the modules in the apparatus of the embodiments can be distributed in the apparatus of the embodiments as described in the embodiments, or they can be located in one or more devices different from this embodiment with corresponding changes. The modules of the above embodiments can be combined into one module, or they can be further divided into multiple sub-modules.

[0123] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0124] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A material conveying system, characterized in that, include: Main control unit and drive unit; The main control device includes at least one control chip, which is used to send power control signals to the multiple drive devices controlled by itself. The driving device includes a driving circuit and an accumulation device; the driving circuit is used to receive the power control signal and output corresponding power to make the accumulation device move in a preset manner; wherein, the plurality of driving devices are arranged sequentially with respect to the accumulation device to form a conveying link for conveying materials.

2. The system as described in claim 1, characterized in that, Also includes: Detection device; The detection device is installed on the accumulation device and is used to detect whether there is material above the accumulation device and send a corresponding detection signal to the control chip corresponding to the accumulation device.

3. The system as described in claim 2, characterized in that, The control chip is also used to receive a detection signal and send a power start signal to a second accumulation device that has a first preset positional relationship with the first accumulation device corresponding to the detection signal and is located downstream of the first accumulation device; or It is also used to receive a detection signal and send a power start signal to a second accumulation device that has a first preset positional relationship with the first accumulation device corresponding to the detection signal and is located downstream of the first accumulation device; and send a power stop signal to a third accumulation device that has a second preset positional relationship with the first accumulation device and is located upstream of the first accumulation device. The power control signals include a power start signal and a power stop signal; the power start signal has a higher execution priority than the power stop signal.

4. The system as described in claim 2, characterized in that, The detection device corresponds one-to-one with the accumulation device; For the fourth accumulation device at the upstream end of the conveying link, a corresponding detection device is set at the starting position of the fourth accumulation device; for the fifth accumulation device at the downstream end of the conveying link, a corresponding detection device is set at the end position of the fifth accumulation device. The control chip corresponding to the fourth accumulator is also used to send a power start signal to the fourth accumulator after receiving the detection signal sent by the detection device corresponding to the fourth accumulator. The control chip corresponding to the fifth accumulator is also used to send a power off signal to the fifth accumulator after receiving a detection signal sent by the detection device corresponding to the fifth accumulator; the power control signal includes a power start signal and a power off signal.

5. The system as described in claim 1, characterized in that, The accumulation device includes: a roller motor and at least one transfer roller driven by the roller motor; The drum motor is connected to the output terminal of the corresponding drive circuit, which outputs a corresponding electrical signal after receiving a power start signal. The roller motor is used to output kinetic energy of corresponding power according to the electrical signal to drive the transmission roller to rotate; The drive circuit is also used to stop outputting electrical signals to stop the rotation of the drum motor after receiving a power off signal; The power control signals include power start signals and power stop signals.

6. The system as described in claim 1, characterized in that, Also includes: Sampling device; The sampling device is located at the output end of the drive circuit and is used to sample the electrical signal output by the drive circuit to the corresponding drum motor and send the sampling result to the corresponding control chip to determine the load condition of the drum motor. The control chip is also used to receive the sampling results; send a power adjustment signal to the corresponding drive circuit to adjust the output power of the drive circuit, and control the load of the corresponding drum motor to maintain balance.

7. The system as described in claim 5, characterized in that, The drive circuit includes: a drive chip, power devices, and a motor power supply; The driving chip is used to receive the power control signal and output a corresponding modulation signal to the power device; The motor power supply is connected to the power device and is used to supply power to the drum motor through the power device; The power device includes multiple switching devices connected in a preset connection manner; the switching devices are used to switch the switching state according to the modulation signal, convert the electrical signal input to the motor power supply into a target electrical signal, and output it to the drum motor.

8. The system as described in claim 1, characterized in that, The main control device includes at least two control chips, and the main control device further includes: a main control chip; The main control chip is connected to the at least two control chips via a bus to synchronize the timing of the at least two control chips.

9. The system as described in claim 2, characterized in that, The main control device includes at least two control chips, which are connected via a bus. The control chip is also used to receive a detection signal for the downstream accumulator among the multiple drive devices it controls; and to send a corresponding inter-chip communication signal to the adjacent control chip downstream of the control chip; and to receive the inter-chip communication signal sent by the adjacent control chip upstream of the control chip, and to send a power start signal to the upstream accumulator among the multiple drive devices it controls. The power control signal includes: a power start signal.

10. The system as described in claim 2, characterized in that, The main control device includes at least two control chips, which are connected via a bus. The control chip is also used to receive a detection signal for the upstream accumulator among the multiple drive devices it controls; send a corresponding inter-chip communication signal to the adjacent control chip upstream of the control chip; and receive the inter-chip communication signal sent by the adjacent control chip downstream of the control chip, and send a power shutdown signal to the downstream accumulator among the multiple drive devices it controls. The power control signal includes: a power off signal.

11. The system as described in claim 5, characterized in that, The accumulation device further includes: a braking device; the system further includes: an energy storage device; The braking device is disposed on the at least one transmission roller driven by the roller motor; the energy storage device is connected to multiple braking devices. The braking device is used to stop the transmission roller after the corresponding roller motor stops working, and to convert the kinetic energy of the transmission roller during the stopping process into electrical energy and store it in the energy storage device.

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