Distribution trolley control system and method thereof

Abstract

The invention relates to the technical field of industrial automation, and discloses a material distribution trolley control system and a method thereof.The material distribution trolley control system comprises a position detection unit, a control unit, an operation unit, a driving speed regulation unit and a wireless communication unit, and the operation unit comprises a control terminal and a mobile terminal which are independent of each other; the wireless communication unit is in communication connection with the mobile terminal, the control unit, the driving speed regulation unit and the position detection unit, and the control unit is electrically connected with the control terminal and the driving speed regulation unit; through cooperation of all the units, remote visualization and precise controllability of the distribution trolley are achieved, faults and safety risks are reduced, operation data of the distribution trolley can be synchronously sent to a control terminal and a mobile terminal of the operation unit, and the control terminal can be used by field management personnel to check the operation state of the distribution trolley in real time; the mobile terminal can be used in a mobile mode, the real-time state of the distribution trolley can be checked remotely without being attended in a control room, and management flexibility is improved.

Description

Technical Field

[0001] This invention relates to the field of industrial automation technology, specifically to a fabric trolley control system and method. Background Technology

[0002] The traditional operating methods and supporting control systems of the concrete placing trolleys currently used in metallurgy, mining and other fields have many significant shortcomings. The main problem stems from their harsh working environment, which not only leads to a high failure rate of on-site equipment, but also poses serious safety hazards to personnel. Specifically, this is manifested in two major aspects: insufficient equipment reliability and prominent safety risks to personnel.

[0003] At the equipment operation level, the harsh working environment directly exacerbates equipment wear and tear, leading to frequent malfunctions, including current collector-related faults, proximity switch failures, and damage to cables and cable trays. Environmental factors frequently cause problems such as poor current collector contact, broken conductor rails, and current collector derailment, resulting in unstable power transmission. Insufficient bin positioning accuracy and the vulnerability of proximity switches to impacts, coupled with limited sensing distances and environmental interference, further affect the accuracy of the material placing trolley. Furthermore, the close proximity of cables and cable trays to the material placing trolley results in cable breakage and cable tray damage during trolley operation, impacting the overall continuity of equipment operation.

[0004] In terms of personnel safety, due to the equipment layout and operating characteristics, the safety distance between maintenance personnel and the fabric trolley is difficult to guarantee, and the working environment is harsh, maintenance personnel are constantly facing safety risks caused by unexpected equipment operation and parts falling off when operating and maintaining on site. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a fabric trolley control system and method. Through the synergistic effect of the position detection unit, control unit, operation unit, drive speed regulation unit and wireless communication unit, the fabric trolley can be remotely visualized and precisely controlled, reducing failure and safety risks.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention proposes a fabric trolley control system, comprising a position detection unit, a control unit, an operation unit, a drive speed adjustment unit, and a wireless communication unit, wherein: the position detection unit is connected to the wireless communication unit and is used to acquire the operating data of the fabric trolley and send the operating data to the wireless communication unit; the control unit is connected to the wireless communication unit and is used to receive operation instructions sent by the operation unit and the operating data sent by the wireless communication unit, generate control instructions based on the operation instructions and send them to the wireless communication unit, and determine whether the fabric trolley is within a safe operating range based on the operating data; the operation unit includes a mobile terminal and a control terminal, the control terminal is connected to the control unit and is used to send a first operation instruction to the control unit and receive the operating data sent by the control unit, the mobile terminal is connected to the wireless communication unit and is used to send a second operation instruction to the wireless communication unit and receive the operating data sent by the wireless communication unit; the drive speed adjustment unit is connected to the control unit and the wireless communication unit and is used to receive control instructions sent by the control unit or the wireless communication unit and adjust the operating state of the fabric trolley according to the control instructions.

[0007] Optionally, the operating data includes the speed of the fabric trolley, the actual operating position, and the target hopper position, and the position detection unit obtains the distance between the fabric trolley and the target hopper based on the actual operating position and the target hopper position.

[0008] Optionally, the drive speed control unit includes a DC single-wire current collector, a DC motor, and a DC speed control module. The DC single-wire current collector is used to supply power to the fabric trolley, the DC motor is used to drive the fabric trolley to move, and the DC speed control module is used to adjust the speed of the DC motor.

[0009] Optionally, the position detection unit uses a laser infrared rangefinder, the control unit uses a PLC controller, and the wireless communication unit uses a 4G communication module.

[0010] Optionally, the detection signal from the laser infrared rangefinder is transmitted to the PLC controller via the 4G communication module. The PLC controller converts the received analog signal into a digital signal and then sends it synchronously to the mobile terminal and the control terminal for visualization.

[0011] Secondly, the present invention proposes a control method based on the fabric trolley control system described in the first aspect, applied to a control unit, the control method comprising: The system receives a first operation command sent by the control terminal and / or a second operation command sent by the mobile terminal, generates a control command, and sends the control command to the drive speed adjustment unit so that the drive speed adjustment unit can adjust the running status of the fabric trolley according to the control command; it receives running data sent from the position detection unit to the wireless communication unit, determines whether the fabric trolley is within the safe operating range based on the running data, and forwards the running data to the control terminal.

[0012] Optionally, after receiving the power-on command sent by the control unit, the wireless communication unit sends a power-on command to the drive speed control unit, so that the drive speed control unit can start the fabric trolley at a preset slow speed according to the power-on command.

[0013] Optionally, when the position detection unit detects that the fabric trolley has reached the mechanical limit position or the preset safety boundary, the position detection unit sends a limit signal to the control unit, the control unit outputs a stop command to the drive speed regulation unit, and the drive speed regulation unit controls the fabric trolley to stop moving forward and enter a one-way locking state.

[0014] Optionally, when the position detection unit detects that the fabric trolley has not stopped when it should have stopped or that the position deviation exceeds the limit, the control unit outputs an alarm signal to the operation unit, and the operation unit can initiate a manual intervention command to forcibly adjust the operating status of the fabric trolley.

[0015] Thirdly, the present invention proposes a control method based on the fabric trolley control system described in the first aspect, applied to a wireless communication unit, the control method comprising: The system receives a second operation command sent by the mobile terminal and sends the second operation command to the control unit so that the control unit can generate control commands based on the second operation command; it receives operating data sent by the position detection unit and sends the operating data to the control unit and the mobile terminal so that the control unit can forward the operating data to the control terminal and determine whether the fabric trolley is within the safe operating range; it receives control commands sent by the control unit and sends control commands to the drive speed adjustment unit so that the drive speed adjustment unit can adjust the operating state of the fabric trolley based on the control commands.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) In this invention, the operation data of the fabric trolley can be synchronously sent to the control terminal and mobile terminal of the operation unit. The control terminal can be used by on-site management personnel to view the operation status of the fabric trolley in real time, such as dynamic trajectory, speed and distance data between the fabric trolley and the target silo, which is convenient for centralized scheduling. When an abnormality occurs, the operation status of the fabric trolley can be quickly intervened at the control terminal. The mobile terminal can be used by management personnel or maintenance personnel on the go. Without having to be on duty in the control room, they can remotely view the real-time status of the fabric trolley, such as whether the fabric transfer has been completed, whether it is in standby mode, etc., and can even issue operation instructions (such as emergency stop) to improve management flexibility. (2) In this invention, the fabric trolley is upgraded from local manual operation to a remotely visible and precisely controllable intelligent device, which not only reduces the cost of manual intervention, but also improves the safety of operation and increases production efficiency. (3) In this invention, the position detection unit uses a laser infrared rangefinder to accurately sense the environment and position of the fabric trolley. It can measure the distance between the fabric trolley and the target hopper in real time, and accurately locate the real-time position of the fabric trolley in the working area, providing a data basis for subsequent precise movement. (4) In this invention, the drive of the fabric trolley is upgraded from AC motor powered by 5 sliding wires to DC motor powered by 1 sliding wire. By simplifying the sliding wire structure, the risk of failure is greatly reduced and the stability of equipment operation is improved. At the same time, the problem of low speed regulation accuracy of traditional fabric trolleys is solved. It can achieve stepless speed regulation according to the operation requirements, which can ensure the moving efficiency when lightly loaded, and can also run slowly when heavily loaded or close to the target, thereby improving the stability of fabric transfer and avoiding fabric slippage and collision. (5) In this invention, the wireless communication unit adopts a 4G communication module to upload the on-site material laying trolley's running data, such as position, speed, and distance, to the control unit and mobile terminal in real time via the 4G network. At the same time, it receives instructions such as start, stop, and route adjustment issued by the control terminal and mobile terminal, breaking through the limitations of wired control or short-range wireless control, and realizing cross-regional remote operation. (6) In this invention, the control unit adopts a PLC controller to integrate the functions of other units, such as receiving position data from the position detection unit, determining whether the fabric trolley is in a safe operating range, adjusting the speed of the fabric trolley through the DC speed control module according to the control command, and synchronously forwarding the on-site position, speed and status data to the control terminal and mobile terminal to realize closed-loop control of command issuance and data feedback. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the fabric trolley control system in an embodiment of the present invention; Figure 2 This is a flowchart illustrating the fabric trolley control method in an embodiment of the present invention. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the invention and therefore only show the components relevant to the invention.

[0019] Example 1, as Figure 1 As shown, the present invention proposes a fabric trolley control system, including a position detection unit, a control unit, an operation unit, a drive speed control unit, and a wireless communication unit. The operation unit includes an independent control terminal and a mobile terminal. The wireless communication unit is communicatively connected to the mobile terminal, the control unit, the drive speed control unit, and the position detection unit. The control unit is electrically connected to the control terminal and the drive speed control unit.

[0020] The position detection unit is used to acquire the operating data of the fabric trolley and send the operating data to the wireless communication unit; the control unit is used to receive the operation instructions sent by the operation unit and the operating data sent by the wireless communication unit, generate control instructions according to the operation instructions and send them to the wireless communication unit, and determine whether the fabric trolley is within the safe operating range according to the operating data.

[0021] The control terminal uses an operator console, usually located in the corresponding control room, to send the first operation command to the control unit and receive the operation data sent by the control unit, so as to realize on-site monitoring and intervention of the operation status of the fabric trolley. The mobile terminal uses a mobile phone APP, which can be carried with you, to send the second operation command to the wireless communication unit and receive the operation data sent by the wireless communication unit, so as to realize remote monitoring and intervention of the operation status of the fabric trolley.

[0022] The drive speed control unit is used to receive control commands sent by the control unit or the wireless communication unit, and adjust the running status of the fabric trolley according to the control commands. Since the drive speed control unit is connected to both the control unit and the wireless communication unit, it can be operated locally through the control unit and remotely through the wireless communication unit. The latter will be used as an example here.

[0023] Specifically, the operational data of the fabric trolley can be synchronously sent to the control terminal and mobile terminal of the operating unit. The control terminal is used by on-site management personnel to view the real-time operating status of the fabric trolley, such as its dynamic trajectory, speed, and distance data between the fabric trolley and the target hopper, facilitating centralized scheduling. In case of anomalies, the control terminal can quickly intervene in the operating status of the fabric trolley. The mobile terminal is used by management or maintenance personnel on the go, eliminating the need for on-site monitoring in the control room. It allows them to remotely view the real-time status of the fabric trolley, such as whether the fabric transfer has been completed, whether it is in standby mode, etc., and can even issue operating commands (such as emergency stop), improving management flexibility. The fabric trolley has been upgraded from local manual operation to a remotely visible, precisely controllable intelligent device, which not only reduces the cost of manual intervention but also improves operational safety and increases production efficiency.

[0024] The aforementioned operational data includes the speed of the fabric placing trolley, its actual operating position, and the location of the target hopper. The position detection unit determines the distance between the fabric placing trolley and the target hopper based on the actual operating position and the target hopper location. This position detection unit employs a laser infrared rangefinder to accurately perceive the environment and position of the fabric placing trolley. It can measure the distance between the fabric placing trolley and the target hopper in real time, and simultaneously pinpoint the real-time location of the fabric placing trolley within the operating area, providing a data foundation for subsequent precise movement.

[0025] The drive speed control unit includes a DC single-wire current collector, a DC motor, and a DC speed control module. The DC single-wire current collector is used to supply power to the fabric trolley. That is, the DC single-wire current collector is electrically connected to the DC motor and the DC speed control module. The DC motor is connected to the fabric trolley to drive the fabric trolley to move. The DC speed control module is a DC speed controller, which is connected to the control unit and the wireless communication unit to adjust the speed of the DC motor.

[0026] Based on this, the drive of the fabric trolley has been upgraded from an AC motor powered by 5 sliding wires to a DC motor powered by 1 sliding wire. By simplifying the sliding wire structure, the risk of failure is greatly reduced and the stability of equipment operation is improved. At the same time, the problem of low speed regulation accuracy of traditional fabric trolleys is solved. Stepless speed regulation can be achieved according to the operation requirements, which can ensure the moving efficiency under light load and also run slowly under heavy load or when close to the target, improving the stability of fabric transfer and avoiding fabric slippage and collision.

[0027] The wireless communication unit adopts a 4G communication module, specifically a 4G wireless receiver switch, which is used to upload the on-site material placement trolley's operating data, such as position, speed, and distance measurement, to the control unit and mobile terminal in real time via the 4G network. The control unit then forwards the data to the control terminal. At the same time, it receives commands from the control terminal and mobile terminal, such as start, stop, and route adjustment, thus overcoming the limitations of wired control or short-range wireless control and realizing cross-regional remote operation.

[0028] The control unit uses a PLC controller to integrate the functions of other units, such as receiving position data from the position detection unit, determining whether the fabric trolley is within the safe operating range, adjusting the speed of the fabric trolley through the DC speed control module according to control commands, and synchronously forwarding the on-site position, speed, and status data to the control terminal and mobile terminal to realize closed-loop control of command issuance and data feedback.

[0029] The PLC controller integrates closed-loop control logic and executes the following control flow: Power-on startup: The control unit initiates a power-on command, which is transmitted to the PLC controller via the 4G communication module or directly. The PLC controller first controls the DC brake to open, and then drives the DC motor to start running at a preset slow speed to avoid starting shock. Limit position protection: When the laser infrared rangefinder detects that the fabric trolley has reached the mechanical limit position or the preset safety boundary, it sends a limit signal to the PLC controller. The PLC controller immediately outputs a stop command, controls the fabric trolley to stop moving forward and enters a one-way locking state, which only allows it to move away from the limit position in the opposite direction. After leaving the limit area, it resumes bidirectional movement. Anomaly Handling: When anomalies such as the fabric trolley failing to stop when it should have stopped or exceeding the position deviation limit are detected, the PLC controller triggers an alarm signal, which is synchronized to the mobile terminal via the 4G communication module or directly to the control terminal. At the same time, it supports manual intervention commands initiated through the operation unit to forcibly adjust the operating status of the fabric trolley, and manual intervention commands take precedence over other commands.

[0030] Example 2, as Figure 2 As shown, based on Embodiment 1, this invention proposes a fabric trolley control method, applied to a control unit, the control method including: The system receives a first operation command sent by the control terminal and / or a second operation command sent by the mobile terminal, generates a control command, and sends the control command to the drive speed adjustment unit so that the drive speed adjustment unit can adjust the running status of the fabric trolley according to the control command; it receives running data sent from the position detection unit to the wireless communication unit, determines whether the fabric trolley is within the safe operating range based on the running data, and forwards the running data to the control terminal.

[0031] Operators can issue a first operation command on-site via an operating terminal or a second operation command via a mobile terminal. The first operation command takes precedence over the second operation command. The first operation command can be sent directly to the control unit, while the second operation command must first be sent to the wireless communication unit and then forwarded to the control unit by the wireless communication unit. The control commands generated by the control unit can be sent to the drive speed control unit via the wireless communication unit or directly to the drive speed control unit via the control unit. The former will be used as an example here.

[0032] After receiving the power-on command from the control unit, the wireless communication unit sends a power-on command to the drive speed control unit, which then starts the fabric trolley at a preset slow speed according to the power-on command. The operator initiates the power-on command through the control panel, activating the control circuit. Upon triggering the command, the DC brake is first released, followed by the start of the DC motor, driving the fabric trolley forward at a slow speed to avoid impact on the equipment or materials during startup.

[0033] As described above, the fabric trolley obtains continuous power through a single DC sliding cable during movement, ensuring stable power supply and avoiding malfunctions caused by cable dragging. The position detection unit uses a laser infrared rangefinder to collect real-time information from two key locations. The actual running position of the fabric trolley and the position coordinates of the target hopper are pre-calibrated or the hopper position is identified in real time. Through precise distance measurement, position data support is provided for the subsequent stopping of the fabric trolley at the designated hopper unloading area, ensuring stopping accuracy.

[0034] The detection signal from the laser infrared rangefinder is transmitted to the PLC controller via a 4G communication module. The PLC controller converts the received analog signals (such as distance, position, and voltage signals) into digital signals for data processing and instruction execution, and simultaneously sends them to the mobile terminal and control terminal for visualization. The converted digital signals are synchronously transmitted to the two control terminals and the mobile terminal for real-time monitoring by the staff. The control panel displays the real-time position of the fabric trolley, the target position of the hopper, and the operating status; the mobile APP enables remote real-time monitoring, with data synchronized with the control panel screen.

[0035] When the position detection unit detects that the fabric trolley has reached the mechanical limit position or the preset safety boundary, the position detection unit sends a limit signal to the control unit. The control unit then outputs a stop command to the drive speed control unit, which controls the fabric trolley to stop moving forward and enter a one-way locking state. When the fabric trolley moves to the mechanical limit position (or the preset safety boundary), the laser infrared rangefinder will detect the limit signal first and immediately feed it back to the PLC controller. After receiving the limit signal, the PLC controller immediately outputs a stop command to control the fabric trolley to stop moving forward and prevent overtravel collisions. At this time, the fabric trolley enters a one-way locking state, allowing it to move only in the opposite direction away from the limit position until it leaves the limit area and resumes normal bidirectional movement.

[0036] When the position detection unit detects that the fabric trolley has not stopped when it should have stopped or that the position deviation exceeds the limit, the control unit outputs an alarm signal to the operation unit. The operation unit can then initiate a manual intervention command to forcibly adjust the operating status of the fabric trolley.

[0037] If an abnormality occurs, such as the fabric trolley failing to stop when it should, or exceeding the positional deviation limit, or if there is a PLC instruction failure or a detection signal malfunction, the fabric trolley control system will trigger a dual alarm: the corresponding abnormal area or status indicator on the control panel screen will flash an alarm bell; the mobile APP will alert remote personnel through vibration and pop-up windows to ensure that remote personnel can detect the problem in a timely manner.

[0038] Once an abnormality is detected, the operator can intervene in two ways: manual intervention via the control panel: directly click the emergency stop, reverse run, reset, or other buttons on the control panel to forcibly adjust the status of the fabric trolley; or remote control via the corresponding function keys on the APP to achieve the same control as the control panel and quickly resolve the problem.

[0039] In Example 3, based on Example 2, the present invention further proposes a fabric trolley control method, applied to a wireless communication unit, the control method comprising: The system receives a second operation command sent by the mobile terminal and sends the second operation command to the control unit so that the control unit can generate control commands based on the second operation command; it receives operating data sent by the position detection unit and sends the operating data to the control unit and the mobile terminal so that the control unit can forward the operating data to the control terminal and determine whether the fabric trolley is within the safe operating range; it receives control commands sent by the control unit and sends control commands to the drive speed adjustment unit so that the drive speed adjustment unit can adjust the operating state of the fabric trolley based on the control commands.

[0040] First, check the installation firmness and contact surface cleanliness of the DC single-wire current collector to ensure there are no breaks or looseness, and that the power supply circuit is unobstructed. Then, check the connection status of the PLC controller, 4G communication module, laser infrared rangefinder, DC motor, and DC brake to ensure that the lines are undamaged and the interfaces are not loose. Finally, test the operation console display screen and operation buttons (start, emergency stop, reset, etc.) to ensure they function normally, that the mobile APP login permissions are valid, the signal connection is stable, and the screen data is synchronized normally.

[0041] Secondly, the precise position coordinates of the target hopper are calibrated using a laser infrared rangefinder (pre-stored or real-time identification modes can be selected) to ensure the positioning accuracy of the discharge port; the safe operating range of the material distribution trolley is set in the PLC controller, and the mechanical limit positions and preset safety boundary parameters are defined to avoid overtravel.

[0042] Then, according to the work plan, the operator issues a start command through the start button on the control panel or the corresponding function key on the mobile APP. The command is transmitted directly or in real time to the PLC controller via the 4G communication module. The PLC controller first outputs a control signal to drive the DC brake to open slowly. After confirming that the brake is fully open, the PLC controller starts the DC motor and controls the motor to run at a preset slow speed, which drives the fabric trolley to start moving, avoiding the impact of starting that could cause the fabric to slip or damage the equipment.

[0043] During the movement of the fabric trolley, a stable power supply is continuously obtained through a single DC sliding wire current collector, avoiding the malfunctions caused by traditional multi-sliding wire dragging. A laser infrared rangefinder collects two types of data in real time: the actual running position of the fabric trolley and the coordinates of the target hopper. The analog signals are transmitted to the PLC controller via an infrared laser receiver. The PLC controller converts the received analog signals into digital signals and, combined with speed commands issued by the operation unit, achieves stepless speed regulation of the motor through a DC speed control module. In light-load scenarios, the motor speed is automatically increased to improve the moving efficiency of the fabric trolley; in heavy-load scenarios or when approaching the target hopper, the speed is automatically reduced to ensure the stability of fabric transfer and prevent collisions or material slippage.

[0044] The control panel display screen synchronously shows the dynamic running trajectory of the fabric trolley, its real-time speed, distance to the surrounding environment, the location of the target hopper, and the equipment's working status (moving / standby / unloading). The above data can be remotely synchronized via a mobile app, allowing managers to check the operation progress at any time without needing to be present in the control room.

[0045] When the laser infrared rangefinder detects that the fabric trolley is approaching or has reached a preset limit position / safety boundary, it immediately sends a limit signal to the PLC controller. The PLC controller instantly outputs a stop command, controlling the DC motor to stop moving forward, and simultaneously activates the one-way locking function, allowing the fabric trolley to move only in the direction away from the limit position. Once the fabric trolley has left the limit area and the laser infrared rangefinder no longer detects the limit signal, the PLC controller automatically unlocks, restoring the bidirectional movement function of the fabric trolley.

[0046] The PLC controller verifies operational data in real time. If any anomalies occur, such as the fabric trolley failing to stop when it should, exceeding positional deviation limits, or signal transmission interruption, an alarm mechanism is immediately triggered. The corresponding abnormal status indicator on the control panel flashes and is accompanied by an alarm bell. Simultaneously, the mobile app sends a vibration and pop-up alarm, prompting the operator to handle the situation promptly. Upon receiving the alarm, the operator can handle it in two ways: 1) Click the emergency stop or reverse run reset button on the control panel to forcibly adjust the fabric trolley's status; 2) Issue the same control command via the corresponding function key on the mobile app. The command is transmitted via the 4G module and executed first, quickly resolving the anomaly.

[0047] Once the fabric trolley completes the transfer of fabric to the designated hopper, the operator issues a stop command via the control panel or mobile app. Upon receiving the command, the PLC controller gradually reduces the speed of the DC motor until it stops. After the motor comes to a complete stop, the DC brake is engaged, locking the fabric trolley in place. In case of a major safety hazard or equipment malfunction, the operator can directly press the physical emergency stop button on the control panel or click the emergency stop button on the mobile app. The system will immediately execute the power-off shutdown procedure, instantly stopping the DC motor, rapidly closing the DC brake, and simultaneously triggering the highest-level alarm to alert on-site personnel to investigate the problem.

[0048] In summary, this invention proposes a control system and method for a fabric laying trolley. Through stable power supply from a single DC sliding wire current collector, precise positioning using a laser infrared rangefinder, bidirectional data transmission via a 4G communication module, and dual terminals (operation console and mobile app), it achieves closed-loop control of the entire fabric laying trolley process from start-up, operation to shutdown. Simultaneously, it integrates automatic limit position protection, dual abnormal alarms, and remote / on-site manual intervention functions, solving the problems of frequent power supply failures, low positioning accuracy, need for on-site monitoring, and high safety risks associated with traditional fabric laying trolleys. Ultimately, it achieves the technical effects of stable equipment operation, improved operational safety, precise and efficient control, and flexible and convenient management.

[0049] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0050] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0051] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0052] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0053] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A fabric trolley control system, characterized in that, It includes a position detection unit, a control unit, an operation unit, a drive speed control unit, and a wireless communication unit, wherein: The position detection unit is connected to the wireless communication unit and is used to acquire the operation data of the fabric trolley and send the operation data to the wireless communication unit. The control unit is connected to the wireless communication unit and is used to receive operation instructions sent by the operation unit and running data sent by the wireless communication unit, generate control instructions based on the operation instructions and send them to the wireless communication unit, and determine whether the fabric trolley is within the safe operating range based on the running data. The operation unit includes a mobile terminal and a control terminal. The control terminal is connected to the control unit and is used to send a first operation command to the control unit and receive operation data sent by the control unit. The mobile terminal is connected to the wireless communication unit and is used to send a second operation command to the wireless communication unit and receive operation data sent by the wireless communication unit. The drive speed control unit is connected to the control unit and the wireless communication unit, and is used to receive control commands sent by the control unit or the wireless communication unit, and adjust the running status of the fabric trolley according to the control commands.

2. The fabric trolley control system according to claim 1, characterized in that, The operational data includes the speed of the fabric trolley, its actual operating position, and the position of the target hopper. The position detection unit obtains the distance between the fabric trolley and the target hopper based on the actual operating position and the target hopper position.

3. The fabric trolley control system according to claim 1, characterized in that, The drive speed control unit includes a DC single-wire collector, a DC motor, and a DC speed control module. The DC single-wire collector is used to supply power to the fabric trolley, the DC motor is used to drive the fabric trolley to move, and the DC speed control module is used to adjust the speed of the DC motor.

4. The fabric trolley control system according to claim 1, characterized in that, The position detection unit uses a laser infrared rangefinder, the control unit uses a PLC controller, and the wireless communication unit uses a 4G communication module.

5. The fabric trolley control system according to claim 4, characterized in that, The detection signal from the laser infrared rangefinder is transmitted to the PLC controller via the 4G communication module. The PLC controller converts the received analog signal into a digital signal and then sends it synchronously to the mobile terminal and the control terminal for visualization.

6. A control method based on the fabric trolley control system according to any one of claims 1-5, characterized in that, The control method, applied to the control unit, includes: The system receives a first operation command sent by the control terminal and / or a second operation command sent by the mobile terminal, generates a control command, and sends the control command to the drive speed control unit so that the drive speed control unit can adjust the running status of the fabric trolley according to the control command. It receives the operation data sent from the position detection unit to the wireless communication unit, determines whether the fabric trolley is within the safe operating range based on the operation data, and forwards the operation data to the control terminal.

7. The fabric trolley control method according to claim 6, characterized in that, After receiving the power-on command from the control unit, the wireless communication unit sends a power-on command to the drive speed control unit, so that the drive speed control unit can start the fabric trolley at a preset slow speed according to the power-on command.

8. The fabric trolley control method according to claim 7, characterized in that, When the position detection unit detects that the fabric trolley has reached the mechanical limit position or the preset safety boundary, the position detection unit sends a limit signal to the control unit, the control unit outputs a stop command to the drive speed regulation unit, and the drive speed regulation unit controls the fabric trolley to stop moving forward and enter a one-way locking state.

9. The fabric trolley control method according to claim 8, characterized in that, When the position detection unit detects that the fabric trolley has not stopped when it should have stopped or that the position deviation exceeds the limit, the control unit outputs an alarm signal to the operation unit, and the operation unit can initiate a manual intervention command to forcibly adjust the operating status of the fabric trolley.

10. A control method based on the fabric trolley control system according to any one of claims 1-5, characterized in that, The control method, applied to a wireless communication unit, includes: The system receives a second operation instruction sent by the mobile terminal and sends the second operation instruction to the control unit so that the control unit can generate control instructions based on the second operation instruction. It receives the operation data sent by the position detection unit and sends the operation data to the control unit and the mobile terminal, so that the control unit can forward the operation data to the control terminal and determine whether the fabric trolley is within the safe operating range; It receives control commands from the control unit and sends control commands to the drive speed control unit so that the drive speed control unit can adjust the running status of the fabric trolley according to the control commands.

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