Bus valve control system

Abstract

The embodiment of the application provides a bus valve control system, and belongs to the technical field of engineering equipment. The system comprises a controller, which is used for sending a bus starting command to a bus valve when a system power-on signal is received; the bus valve is used for sending working state information to the controller based on a preset sending period when the bus starting command is received. An input mechanism is used for sending demand information to the controller; the controller is further used for determining a first control instruction based on the demand information and sending the first control instruction to the bus valve based on a preset sending period; and the bus valve is used for outputting a second control instruction based on the first control instruction. By using the bus valve, the number of control wiring harnesses is greatly reduced, the system is simple and beautiful, space and wiring harness cost are saved, wiring harness connection errors are effectively avoided, and control effectiveness is improved.

Description

Technical Field

[0001] This invention relates to the field of engineering equipment technology, and more specifically to a bus valve control system. Background Technology

[0002] Currently, large-tonnage engineering cranes commonly use electro-hydraulic proportional valve assemblies to control various actions. The crane uses current to control the opening of these valves, with the controller providing the output port and control current. However, electro-hydraulic proportional valve assemblies have poor integration and numerous peripheral circuits, resulting in complex control harnesses. As technological advancements demand higher levels of integration, bus valves have emerged. Bus valves support multiple fieldbus protocols, and a single bus valve assembly can support multiple dual-coil solenoid valves, significantly reducing installation space and greatly simplifying the number of wiring harnesses. Control commands via bus valves reduce the amount of control wiring required. However, the application of bus valves in engineering cranes is limited, and there is a lack of methods to achieve automated control of bus valves. Summary of the Invention

[0003] To address the aforementioned shortcomings in the prior art, the purpose of this invention is to provide a bus valve control system.

[0004] To achieve the above objectives, the present invention provides a bus valve control system, comprising:

[0005] The controller is used to send a bus start command to the bus valve when it receives a system power-on signal;

[0006] The bus valve is used to send working status information to the controller based on a preset sending cycle when a bus start command is received.

[0007] The input mechanism is used to send demand information to the controller;

[0008] The controller is also used to determine the first control command based on demand information and send the first control command to the bus valve based on a preset sending cycle;

[0009] The bus valve is used to output a second control command based on a first control command.

[0010] In this embodiment of the invention, the controller is further configured to:

[0011] Determine whether work status information is received within a specified period, wherein the specified period includes one or more preset transmission periods;

[0012] If no working status information is received within a specified period, an abnormal prompt message will be output for the bus valve.

[0013] In this embodiment of the invention, the controller is further configured to:

[0014] If no working status information is received within the specified period, the first control command will be cleared.

[0015] The first control command after being cleared is sent to the bus valve based on the preset sending cycle.

[0016] In this embodiment of the invention, the controller is further configured to:

[0017] Check whether configuration information sent by the host computer has been received;

[0018] In the absence of configuration information, the target control mode is determined based on the input control mode selection command, wherein the control mode includes current control mode, displacement control mode, and flow control mode.

[0019] Output the first control command in target control mode.

[0020] In this embodiment of the invention, the controller is further configured to:

[0021] If configuration information exists, the configuration instructions are determined based on that information.

[0022] Send configuration commands to the bus valve.

[0023] In this embodiment of the invention, the bus valve is also used for:

[0024] Upon receiving a configuration command from the controller, it enters configuration mode;

[0025] In configuration mode, information is configured based on configuration commands;

[0026] Once the information configuration is complete, send configuration feedback information to the controller.

[0027] In this embodiment of the invention, the controller is further configured to:

[0028] Determine whether configuration feedback information based on configuration commands from the bus valve has been received within a specified period;

[0029] If configuration feedback information is received within a specified period, a configuration success message will be output to the host computer.

[0030] If no configuration feedback is received within the specified period, a configuration failure message is output to the host computer.

[0031] In this embodiment of the invention, the bus valve is also used for:

[0032] Upon receiving the first control command, it enters the working mode;

[0033] In the working mode, the second control command is output based on the first control command.

[0034] In this embodiment of the invention, the bus valve is also used for:

[0035] Determine whether the first control command sent by the controller has been received within a specified period;

[0036] If the first control command is not received within a specified period, the output of the second control command is forcibly shut down.

[0037] In this embodiment of the invention, the bus valve is also used for:

[0038] If no bus start command is received, the system enters standby mode, in which the bus valve shuts down the output of working status information and second control commands.

[0039] In the above technical solution, the bus valve control system includes a controller, a bus valve, and an input mechanism. The controller sends a bus start command to the bus valve upon receiving a system power-on signal. The bus valve, upon receiving the bus start command, sends its operating status information to the controller based on a preset sending cycle. By controlling the bus valve's start via the bus start command and receiving the bus valve's operating status information, the controller can monitor the system's operating status and effectively avoid the impact of unstable bus signals. The input mechanism sends demand information to the controller; the controller also determines a first control command based on the demand information and sends the first control command to the bus valve based on a preset sending cycle; the bus valve outputs a second control command based on the first control command. By utilizing the bus valve, the number of control harnesses is significantly reduced, resulting in a streamlined and aesthetically pleasing design, saving space and harness costs, effectively avoiding harness connection errors, and improving control effectiveness.

[0040] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0041] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0042] Figure 1 This is a schematic diagram of the structure of a bus valve control system according to an embodiment of the present invention.

[0043] Explanation of reference numerals in the attached figures

[0044] 100. Controller; 200. Bus valve; 300. Input mechanism. Detailed Implementation

[0045] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0046] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0047] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0048] Figure 1 The diagram schematically illustrates a bus valve control system according to a first embodiment of the present invention. For example... Figure 1 As shown, in one embodiment of the present invention, a bus valve control system is provided, the bus valve control system comprising:

[0049] The controller 100 is used to send a bus start command to the bus valve 200 when it receives a system power-on signal;

[0050] Bus valve 200 is used to send working status information to controller 100 based on a preset sending cycle when a bus start command is received;

[0051] Input mechanism 300 is used to send demand information to controller 100;

[0052] The controller 100 is also used to determine a first control command based on demand information, and to send the first control command to the bus valve 200 based on a preset sending cycle;

[0053] The bus valve 200 is used to output a second control command based on the first control command.

[0054] In this embodiment, it should be noted that the controller 100 is the core processing module of the bus valve control system and may include a PLC (Programmable Logic Controller). After the bus valve control system is powered on, the controller 100 will receive a system power-on signal. Upon receiving the system power-on signal, the controller 100 generates a bus start command and sends it to the bus valve 200. The bus valve 200 will be in standby mode and will not operate if it does not receive the bus start command. The bus start command is used to control the bus valve 200 to start operating. The bus valve 200 is connected to the controller 100. After receiving the bus start command from the controller 100, the bus valve 200 will send its own operating status information to the controller 100 based on a preset sending period, so that the controller 100 can monitor the operating status of the bus valve 200 in real time. The preset sending period is a pre-configured sending period for the operating status information of the bus valve 200 and can be adaptively adjusted according to actual needs. The operating status information includes the current operating status of the bus valve 200, such as current magnitude, valve stem displacement, and flow rate.

[0055] The input mechanism 300 may include an operating handle, an operating panel, and a remote control, etc. The demand information includes external signals input by the user through the input mechanism 300. The input mechanism 300 is connected to the controller 100 and is used to send the demand information to the controller 100 in the form of a bus, so that the controller 100 understands the actual demand and issues a first control command to meet the actual demand. The first control command is used to control the bus valve 200 to operate. The controller 100 integrates the received demand information, performs logical operations, obtains the first control command, and sends it to the bus valve 200. The second control command is used to control the actuator of the engineering equipment to perform corresponding actions. After receiving the first control command, the bus valve 200 executes the first control command to obtain the second control command and outputs the second control command.

[0056] In this embodiment, the bus valve control system includes a controller 100, a bus valve 200, and an input mechanism 300. The controller 100 sends a bus start command to the bus valve 200 upon receiving a system power-on signal. The bus valve 200, upon receiving the bus start command, sends operating status information to the controller 100 based on a preset sending cycle. By controlling the bus valve 200 to start via the bus start command and receiving the operating status information from the bus valve 200, the controller 100 can monitor the system's operating status, effectively avoiding the impact of unstable bus signals. The input mechanism 300 sends demand information to the controller 100. The controller 100 also determines a first control command based on the demand information and sends the first control command to the bus valve 200 based on a preset sending cycle. The bus valve 200 outputs a second control command based on the first control command. By utilizing the bus valve 200, the number of control harnesses is significantly reduced, resulting in a streamlined and aesthetically pleasing design, saving space and harness costs, effectively avoiding harness connection errors, and improving control effectiveness.

[0057] In one embodiment, the controller 100 is further configured to:

[0058] Determine whether work status information is received within a specified period, wherein the specified period includes one or more preset transmission periods;

[0059] If no working status information is received within a specified period, an abnormal prompt message will be output for the bus valve.

[0060] It should be noted that the bus valve 200 may malfunction during operation. When malfunctions occur, they need to be detected and addressed promptly to avoid the risk of unauthorized control of the equipment due to the bus valve 200 malfunction. In this embodiment, after startup, the bus valve 200 sends operating status information to the controller 100 according to a preset sending cycle. The controller 100 determines the operating status of the bus valve 200 based on the received operating status information. The specified cycle is a pre-set judgment time, which may include one or more preset sending cycles. The controller 100 determines whether the bus valve 200 is malfunctioning by determining whether it receives operating status information from the bus valve 200 within the specified cycle. If the controller 100 does not receive operating status information within the specified cycle, it will output a bus valve malfunction warning message. This message includes a bus valve 200 disconnection signal and an alarm message. The controller 100 outputs the bus valve 200 disconnection signal to the connected host computer so that the host computer can respond to the bus valve 200 malfunction; and outputs an alarm message to prompt relevant personnel to handle the situation promptly and eliminate the malfunction.

[0061] In this embodiment, a specified period is used as the time range for anomaly detection, so that the controller 100 can detect the anomaly of the bus valve 200 in a timely manner, while reducing the error and operating cost caused by real-time detection and improving the working efficiency of the controller 100.

[0062] In one embodiment, the controller 100 is further configured to:

[0063] If no working status information is received within the specified period, the first control command will be cleared.

[0064] Based on the preset sending cycle, the first control command after being cleared is sent to the bus valve 200.

[0065] It should be noted that if the controller 100 does not receive operating status information within a specified period, and the bus valve 200 malfunctions, the controller 100 will reset the first control command output to the bus valve 200, i.e., set all control commands to zero. The malfunction of the bus valve 200 may result in a disconnection. The controller 100 will send the reset first control command to the bus valve 200 based on a preset transmission period, so that the bus valve 200 can provide operating status information based on this first control command when it comes back online. This allows the controller 100 to quickly obtain the operating status of the bus valve 200.

[0066] In this embodiment, the control valve continues to send the first control command after being cleared to the bus valve 200, so as to obtain the working status of the bus valve 200 in a timely manner after the abnormality of the bus valve 200 is eliminated, thereby improving the effectiveness and real-time performance of the control of the bus valve 200.

[0067] In one embodiment, the controller 100 is further configured to:

[0068] Check whether configuration information sent by the host computer has been received;

[0069] In the absence of configuration information, the target control mode is determined based on the input control mode selection command, wherein the control mode includes current control mode, displacement control mode, and flow control mode.

[0070] Output the first control command in target control mode.

[0071] It should be noted that the bus valve 200 requires some basic configurations during operation, such as transmission cycle, bus valve ID, bus protection cycle, and baud rate. By default, the bus valve 200 has an initial configuration. This initial configuration can be adaptively adjusted based on actual needs. Specifically, the operator sends configuration information to the controller 100 via a host computer, enabling the controller 100 to configure the bus valve 200. The controller 100 will continuously monitor whether it receives the configuration information from the host computer. If the controller 100 does not receive the configuration information, it will determine the target control mode based on the input control mode selection command and output the first control command to the bus valve 200 under the target control mode.

[0072] The control modes include current control mode, displacement control mode, and flow control mode. In one embodiment, other control modes that can control the bus valve 200 may also be included. Different control modes correspond to different control methods of the controller 100 on the bus valve 200. For example, the control methods correspond to current control, displacement control, and flow control. The control mode selection instruction is the control mode selected by the operator based on actual needs. It is understood that if there is no control mode selection instruction, the default control mode is used. Different engineering equipment may have different default control modes, which is not strictly limited. The control mode selection instruction may be sent to the controller 100 along with the configuration information, or the configuration information may include the control mode selection instruction, or it may be sent separately by the host computer to the controller 100.

[0073] In this embodiment, the control mode of the controller 100 on the bus valve 200 is determined by the control mode selection instruction, so that the control of the bus valve 200 can meet the actual needs and improve the practicality of the system.

[0074] In one embodiment, the controller 100 is further configured to:

[0075] If configuration information exists, the configuration instructions are determined based on that information.

[0076] Send configuration commands to bus valve 200.

[0077] It should be noted that, given the existence of configuration information, the controller 100 will determine the configuration instruction based on the configuration information and send the configuration instruction to the bus valve 200. The configuration instruction includes specific configurations for the bus valve 200, which may include instructions for configuring the transmission cycle, bus valve 200 ID, bus protection cycle, baud rate, etc. The transmission cycle of the bus valve 200 corresponding to the configuration instruction is the preset transmission cycle, and the controller 100 and the bus valve 200 exchange information based on the preset transmission cycle.

[0078] In this embodiment, the controller 100 implements the basic configuration of the bus valve 200 through configuration instructions, thereby improving the working efficiency and adaptability of the control bus valve 200.

[0079] In one embodiment, the bus valve 200 is also used for:

[0080] Upon receiving a configuration command from controller 100, the system enters configuration mode;

[0081] In configuration mode, information is configured based on configuration commands;

[0082] Once the information configuration is complete, send configuration feedback information to controller 100.

[0083] It should be noted that the bus valve 200 can include a configuration mode and an operating mode. When the bus valve 200 receives a configuration command from the controller 100, it will enter the configuration mode. In configuration mode, the bus valve 200 will change the relevant configuration information according to the configuration command to complete the configuration. Upon completion of the configuration, the bus valve 200 will generate configuration feedback information and send it to the controller 100 to inform the controller 100 that the configuration is complete.

[0084] In this embodiment, the bus valve 200 focuses on basic configuration in configuration mode and sends configuration feedback information to the controller 100 after configuration is completed, thereby improving the configuration accuracy and efficiency of the bus valve 200.

[0085] In one embodiment, the controller 100 is further configured to:

[0086] Determine whether configuration feedback information based on configuration instructions is received from bus valve 200 within a specified period;

[0087] If configuration feedback information is received within a specified period, a configuration success message will be output to the host computer.

[0088] If no configuration feedback is received within the specified period, a configuration failure message is output to the host computer.

[0089] It should be noted that the specified period includes one or more preset transmission periods. The controller 100 determines whether the bus valve 200 has been configured successfully by determining whether it receives configuration feedback information from the bus valve 200 within the specified period. Specifically, if the controller 100 receives configuration feedback information from the bus valve 200 within the specified period, it considers the bus valve 200 to be configured successfully and outputs a configuration success message to the host computer. If no configuration feedback information is received from the bus valve 200 within the specified period, it considers the bus valve 200 to have failed to configure and outputs a configuration failure message to the host computer.

[0090] In this embodiment, a specified period is used as the time range for determining whether the configuration of the bus valve 200 is complete, so that the controller 100 can provide timely feedback on the configuration status of the bus valve 200, thereby improving the working efficiency of the controller 100.

[0091] In one embodiment, the bus valve 200 is also used for:

[0092] Upon receiving the first control command, it enters the working mode;

[0093] In the working mode, the second control command is output based on the first control command.

[0094] It should be noted that the bus valve 200 also includes a working mode. In the working mode, while the bus valve 200 sends working status information to the controller 100 based on a preset sending cycle, it will also execute relevant actions according to the first control command received from the controller 100 and generate a second control command output. The second control command of the bus valve 200 will be output to each actuator of the engineering equipment so that each actuator can perform corresponding actions.

[0095] In this embodiment, the bus valve 200 executes a first control command in the working mode and outputs a second control command based on the first control command, thereby ensuring the accuracy and efficiency of the bus valve 200's operation.

[0096] In one embodiment, the bus valve 200 is also used for:

[0097] Determine whether the first control command sent by the controller 100 is received within a specified period;

[0098] If the first control command is not received within a specified period, the output of the second control command is forcibly shut down.

[0099] It should be noted that when controlling the bus valve 200, the controller 100 may malfunction or the information received by the bus valve 200 may be incorrect. In this case, or if the bus valve 200 continuously outputs the second control command, it may cause system abnormalities, ultimately affecting the execution of the actuators in the engineering equipment and posing safety risks. In this embodiment, by using a specified period as the time range for abnormality judgment, the bus valve 200 will determine whether it has received the first control command sent by the controller 100 within the specified period. If the first control command is not received within the specified period, an abnormal situation may exist, and the output of the second control command will be forcibly shut down. If the first control command is received within the specified period, the system operates normally, and the bus valve 200 outputs the second control command normally.

[0100] In this embodiment, by setting autonomous anomaly judgment conditions for the bus valve 200, the bus valve 200 can independently take emergency measures in the event of an anomaly, avoiding the output of erroneous commands and improving the safety of system operation.

[0101] In one embodiment, the bus valve 200 is also used for:

[0102] If no bus start command is received, it enters standby mode, in which bus valve 200 shuts down the output of working status information and second control command.

[0103] It should be noted that the bus valve 200 starts when it receives a bus start command and feeds back its working status information to the controller 100; if it does not receive a bus start command, the bus valve 200 will enter a standby mode. In the standby mode, the bus valve 200 does not make any output, including shutting down the output of working status information and second control commands.

[0104] In this embodiment, the bus valve 200 shuts off its output in standby mode, saving operating resources, avoiding the occupation of operating resources of other system components, and improving system operating efficiency.

[0105] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0106] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0107] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0108] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A bus valve control system, characterized in that, include: The controller is used to send a bus start command to the bus valve when it receives a system power-on signal; A bus valve is used to send working status information to the controller based on a preset sending cycle when the bus start command is received; An input mechanism for sending demand information to the controller; The controller is also configured to determine a first control command based on the demand information, and send the first control command to the bus valve based on the preset sending period; The bus valve is used to output a second control command based on the first control command; The controller is also used for: Check whether configuration information sent by the host computer has been received; In the absence of the configuration information, the target control mode is determined based on the input control mode selection command, wherein the control mode includes current control mode, displacement control mode, and flow control mode. The first control command is output in the target control mode; If the configuration information exists, a configuration instruction is determined based on the configuration information; Send the configuration command to the bus valve; The bus valve is also used for: Upon receiving a configuration command from the controller, the system enters configuration mode. In the configuration mode, information is configured based on the configuration instructions; Upon completion of the information configuration, a configuration feedback message is sent to the controller. The controller is also used for: Determine whether configuration feedback information based on the configuration command is received from the bus valve within a specified period; If the configuration feedback information is received within the specified period, a configuration success message is output to the host computer. If the configuration feedback information is not received within the specified period, a configuration failure message is output to the host computer.

2. The bus valve control system according to claim 1, characterized in that, The controller is also used for: Determine whether the working status information is received within a specified period, wherein the specified period includes one or more preset transmission periods; If the operating status information is not received within the specified period, an abnormality warning message for the bus valve will be output.

3. The bus valve control system according to claim 2, characterized in that, The controller is also used for: If the working status information is not received within the specified period, the first control command will be cleared. Based on the preset sending cycle, the first control command after being cleared is sent to the bus valve.

4. The bus valve control system according to claim 1, characterized in that, The bus valve is also used for: Upon receiving the first control command, it enters the working mode; In the operating mode, a second control command is output based on the first control command.

5. The bus valve control system according to claim 1, characterized in that, The bus valve is also used for: Determine whether a first control command sent by the controller is received within a specified period; If the first control command is not received within the specified period, the output of the second control command is forcibly shut down.

6. The bus valve control system according to claim 1, characterized in that, The bus valve is also used for: If the bus start command is not received, the system enters standby mode, wherein in standby mode, the bus valve shuts off the output of working status information and second control commands.

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