Bus type electro-hydraulic control device

Abstract

The present disclosure provides a bus type electro-hydraulic control device, comprising a control unit, a plurality of electromagnetic pilot valves, a bus module, and a main valve body; wherein the control unit and the electromagnetic pilot valves are connected through the bus module; the electromagnetic pilot valves are installed on the main valve body; and each electromagnetic pilot valve has a corresponding address identifier at the installation position. Through the bus type electro-hydraulic control device, the electromagnetic pilot valves can automatically obtain the corresponding address information based on the address identifier at the installation position, thereby realizing automatic addressing of the plurality of electromagnetic pilot valves based on physical information, and effectively improving the control efficiency and control robustness of the bus type electro-hydraulic control device.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of electronic equipment, in particular to a bus type electro-hydraulic control device. BACKGROUND

[0002] The bus valve is a kind of valve based on bus communication mode to realize the on-off control of a single valve or the joint logic control of multiple valves, so as to realize the extension and retraction of the hydraulic cylinder to achieve the movement of the engineering machinery.

[0003] The prior art scheme is generally that multiple electromagnetic pilot valves are connected in parallel to a bus, and unified power supply and bus communication (mostly based on CAN bus) are performed. Each electromagnetic pilot valve must have a unique communication ID. In automatic addressing, the initial power-on does not allow the slave node to enter the "communication running mode", but automatically runs in the "communication-stop" state by default ID FF, and then a special communication frame is used to distinguish different slave stations, which is realized by the pre-written serial number.

[0004] In this way, the initialization time is relatively long in the automatic addressing process, which affects the control efficiency, and if one of the electromagnetic pilot valves fails to address, the subsequent control action may be out of control, which has certain risks. SUMMARY

[0005] The present disclosure aims to at least solve one of the technical problems in the related art to some extent.

[0006] To this end, the purpose of the present disclosure is to propose a bus type electro-hydraulic control device, in which the electromagnetic pilot valve can automatically obtain the corresponding addressing information based on the address identification on the installation position, so as to realize the automatic addressing of multiple electromagnetic pilot valves based on physical information, thereby effectively improving the control efficiency and control robustness of the bus type electro-hydraulic control device.

[0007] The bus type electro-hydraulic control device according to the first aspect of the present disclosure comprises a control unit, multiple electromagnetic pilot valves, a bus module, and a main valve body. The control unit and the electromagnetic pilot valves are connected through the bus module. The electromagnetic pilot valves are installed on the main valve body. Each electromagnetic pilot valve has a corresponding address identification on the installation position.

[0008] The bus type electro-hydraulic control device provided by the first aspect of the present disclosure comprises: a control unit, a plurality of electromagnetic pilot valves, a bus module, and a main valve body; wherein the control unit and the electromagnetic pilot valves are connected through the bus module; the electromagnetic pilot valves are installed on the main valve body; and each electromagnetic pilot valve has a corresponding address identifier at the installation position. Through the bus type electro-hydraulic control device, the electromagnetic pilot valves can automatically obtain the corresponding address information based on the address identifier at the installation position, thereby realizing automatic addressing of the plurality of electromagnetic pilot valves based on physical information, and effectively improving the control efficiency and control robustness of the bus type electro-hydraulic control device.

[0009] Additional aspects and advantages of the present disclosure will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0010] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0011] Figure 1 is a structural schematic diagram of a bus type electro-hydraulic control device according to an embodiment of the present disclosure;

[0012] Figure 2 is a schematic diagram of a bus module according to the present disclosure;

[0013] Figure 3 is a schematic diagram of the arrangement of an electromagnetic pilot valve according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0014] The embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, in which the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and cannot be understood as limiting the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0015] Figure 1 is a structural schematic diagram of a bus type electro-hydraulic control device according to an embodiment of the present disclosure.

[0016] As shown in Figure 1 , the bus type electro-hydraulic control device 10 comprises: a control unit 101, a plurality of electromagnetic pilot valves 102, a bus module 103, and a main valve body 104; wherein,

[0017] The control unit 101 and the electromagnetic pilot valves 102 are connected through the bus module 103;

[0018] The electromagnetic pilot valve 102 is installed on the main valve body 104.

[0019] Each electromagnetic pilot valve 102 has a corresponding address identifier at the installation position.

[0020] The control unit 101 can be an integrated control unit obtained on the basis of an existing bus valve. The control logic of the controller or upper computer of the existing bus valve is integrated on the unit to realize on-off control of a single valve or joint logic control of multiple electromagnetic pilot valves.

[0021] The electromagnetic pilot valve 102 can be an electronic component that controls the passage of liquid based on an electrical signal to reduce the pressure or change the flow rate and flow direction of the liquid. One or more electromagnetic pilot valves 102 can be configured in the bus type electro-hydraulic control device 10 proposed in the embodiment of the disclosure. The specific data can be configured according to the application scenario, and no limitation is made to this. For example, when the bus module 103 is configured with a CAN bus, 16 installation positions described above can be configured. In the embodiment of the disclosure, the type of bus configured by the bus module 103 is not limited.

[0022] The bus module 103 refers to a device that is integrated with a bus in advance, for example, a bus motherboard integrated with a CAN bus. In the embodiment of the disclosure, the bus module 103 can also be integrated with a power supply line to facilitate power supply for the control unit 101 and the electromagnetic pilot valve 102.

[0023] The main valve body 104 can be a device used to install the electromagnetic pilot valve 102 in the bus type electro-hydraulic control device.

[0024] The address identifier can be used to indicate the address information of each electromagnetic pilot valve 102 in the bus module 10. For example, it can be a number such as 1#, 2#, etc.

[0025] In the embodiment, a bus type electro-hydraulic control device is proposed, which includes a control unit, a plurality of electromagnetic pilot valves, a bus module, and a main valve body. The control unit and the electromagnetic pilot valve are connected through the bus module. The electromagnetic pilot valve is installed on the main valve body. Each electromagnetic pilot valve has a corresponding address identifier at the installation position. Thus, the electromagnetic pilot valve can automatically obtain the corresponding address information based on the address identifier at the installation position, thereby realizing automatic addressing of multiple electromagnetic pilot valves based on physical information, and effectively improving the control efficiency and control robustness of the bus type electro-hydraulic control device.

[0026] In some embodiments of the disclosure, the installation position belongs to the main valve body or the bus module.

[0027] That is to say, in the bus-type electro-hydraulic control device 10 proposed in the embodiments of this disclosure, the multiple electromagnetic pilot valves 102 can be directly installed on the main valve body 104 or on the bus module 103, without any limitation.

[0028] It is understood that in the bus-type electro-hydraulic control device 10 proposed in the embodiments of this disclosure, the main valve body 104 is usually made of metal, and the address indication process may be affected by the metal material. Therefore, depending on the application scenario, multiple electromagnetic pilot valves 102 can be installed on the main valve body 104 or on the bus module 103.

[0029] In some embodiments of this disclosure, the control unit 101 has wireless receiving and transmitting functions, used to receive bus control information sent by the control center, and generate control signals according to the bus control information; the bus module 103 is used to send the control signals to the solenoid pilot valve and supply power to it.

[0030] The control center can refer to a remote control device used to send control information to the bus-type electro-hydraulic control device 10. This remote control device can be a microcontroller configured for the bus module, or a terminal device (such as a mobile phone or tablet) pre-configured with a control module, etc. There are no restrictions on this.

[0031] Among them, bus control information refers to the control information generated by the control center for the bus-type electro-hydraulic control device 10, which can be used to instruct the bus-type electro-hydraulic control device 10 to perform corresponding valve switching operations.

[0032] The control signal can refer to the electrical signal generated by the control unit 101 based on the received bus control information, which can be used to control one or more electromagnetic pilot valves to perform corresponding control operations.

[0033] In other words, the bus module 103 proposed in this embodiment can be configured with a power supply line while configuring the bus, so as to send control signals to the electromagnetic pilot valve and supply power to it.

[0034] For example, such as Figure 2 As shown, Figure 2 According to the schematic diagram of the bus module proposed in this disclosure, the bus module is configured with a CAN bus (including two lines CANH and CANL), 16 solenoid pilot valve mounting positions (1#, 2#, 3#...16#), corresponding to binary codes 0000, 0001, 0010...1111, and each solenoid pilot valve mounting position is equipped with a quick connector for connecting the bus and the power supply line.

[0035] For example, the control unit 101 can support one or more wireless communication methods, such as Bluetooth communication, WLAN communication, etc., without limitation.

[0036] In some embodiments of the present disclosure, the address identifier is used to indicate the layout information of the sensing device in the main valve body or the bus module; the sensing device is used to generate a sensing signal, and the sensing signal is used to indicate the electromagnetic pilot valve to determine the electromagnetic pilot valve identifier of itself.

[0037] The sensing device can be a device used to generate a sensing signal, such as a magnetic device, a light-emitting device, etc., without limitation. The sensing signal refers to a signal generated by the sensing device, which can be an optical signal, a magnetic sensing signal, etc., without limitation.

[0038] In the present embodiment of the present disclosure, the plurality of sensing devices deployed at the above installation positions can be the same type of sensing device, or can be different types of sensing devices, for example, different combinations of magnetic devices and light-emitting devices, without limitation.

[0039] The layout information can be the type information of different sensing devices and the position information corresponding to each sensing device.

[0040] The electromagnetic pilot valve identifier refers to the identifier information corresponding to the electromagnetic pilot valve, which can be used to indicate the electromagnetic pilot valve in the bus control process, so as to accurately control a plurality of electromagnetic pilot valves.

[0041] For example, in the present embodiment of the present disclosure, when the sensing signal is used to indicate the electromagnetic pilot valve to determine the electromagnetic pilot valve identifier of itself, the electromagnetic pilot valve can be indicated to determine the electromagnetic pilot valve identifier of itself based on the attribute information, quantity information, position information, etc. of the sensing signal.

[0042] In some embodiments of the present disclosure, the electromagnetic pilot valve is configured with a plurality of detection devices; the detection device is used to detect the sensing signal generated by the sensing device.

[0043] The detection device can be a device used to detect the above-mentioned sensing signal.

[0044] That is, in the present embodiment of the present disclosure, a plurality of detection devices can be configured on the electromagnetic pilot valve, so that the electromagnetic pilot valve obtains the layout information of the sensing signal at the corresponding installation position, thereby determining the electromagnetic pilot valve identifier of itself.

[0045] In some embodiments of the present disclosure, the electromagnetic pilot valve is used to receive a control signal based on the bus module, and perform a target control action according to the control signal.

[0046] The target control action can refer to an action performed by the electromagnetic pilot valve under the control of the control signal, such as opening or closing, and the like.

[0047] In some embodiments of the present disclosure, the control signal can include a specific execution action and an electromagnetic pilot valve identifier corresponding to the execution action. After receiving the control signal, the electromagnetic pilot valve can determine whether the execution subject of the control signal is itself according to the electromagnetic pilot valve identifier of the electromagnetic pilot valve, and thus determine whether to execute the execution action indicated in the control signal.

[0048] The electromagnetic pilot valve is also configured to determine signal layout information of the sensing signal in the corresponding installation position, and determine the electromagnetic pilot valve identifier according to the signal layout information.

[0049] The signal layout information can refer to layout information of all sensing signals detected by the detection device of a single electromagnetic pilot valve.

[0050] In some embodiments of the present disclosure, the electromagnetic pilot valve identifier can be consistent with the address identifier of the main valve body or the bus module, or a mapping relationship table of the address identifier and the electromagnetic pilot valve identifier can be established in advance, and then the address identifier is determined according to the signal layout information, the electromagnetic pilot valve identifier corresponding to the address identifier is determined according to the mapping relationship table, and no limitation is made to this.

[0051] In some embodiments of the present disclosure, the electromagnetic pilot valve is also configured to determine state information of the electromagnetic pilot valve, and report the electromagnetic pilot valve identifier and the state information based on the bus module.

[0052] The state information can refer to information such as the on-off state of the electromagnetic pilot valve. It can be understood that in the bus communication network, there can be multiple electromagnetic pilot valves connected to the network, and thus when the electromagnetic pilot valve identifier and the state information are reported based on the bus module, the indication clarity of the state information can be effectively improved.

[0053] In some embodiments of the present disclosure, when the electromagnetic pilot valve identifier is determined according to the layout information, a preset relationship table can be obtained, wherein the preset relationship table includes multiple candidate layout information and a candidate identifier corresponding to each candidate layout information; a matching result of the signal layout information and the multiple candidate layout information is determined; and the electromagnetic pilot valve identifier is determined from the multiple candidate identifiers according to the matching result.

[0054] The preset relationship table can be a relationship table constructed in advance for the mapping relationship between the signal layout information and the electromagnetic pilot valve identifier.

[0055] The candidate layout information can be information generated according to a possible layout feature of the sensing signal. The candidate identifier is an identifier configured for the candidate layout information.

[0056] For example, as shown in Figure 3 , Figure 3 is a schematic diagram of an electromagnetic pilot valve according to an embodiment of the present disclosure, which includes a fast plug and a sensing point region. The fast plug is used to connect the bus and the power supply line. The sensing point region is used to install the detection device. As shown in Figure 3 , according to the layout information of the sensing signal identified by the sensing point region, a plurality of electromagnetic pilot valves can be sequentially identified as No. 1 valve, No. 2 valve, …, and No. 16 valve.

[0057] For the sensing address coding, a sensing device (magnetic device, light-emitting device, etc.) is arranged at the corresponding position of each electromagnetic pilot valve on the backboard. As shown in Figure 3 , four sensing points are arranged at the corresponding position of each electromagnetic pilot valve. The sensing device is placed on or not placed on the sensing points. A detection device (such as a Hall switch or a light-sensitive device) is arranged at the corresponding position of each electromagnetic pilot valve. The presence or absence of a signal at the sensing position is used to determine (1 for signal, 0 for no signal) to achieve the hardware position coding according to the combination of Table 1.

[0058] Table 1

[0059]

[0060] This coding method is not limited to 16 address coding. If five sensing points are arranged at the position of each electromagnetic pilot valve, 2 5 (32) address coding will be achieved. In this way, the limitation of not more than 16 in the CAN protocol software addressing can be overcome, and the method can be applied to other bus automatic coding methods

[0061] In some embodiments of the present disclosure, the bus module is further configured to upload the state information and the electromagnetic pilot valve identifier sent by the electromagnetic pilot valve to the control unit. The control unit is further configured to generate to-be-reported information according to the state information and the electromagnetic pilot valve identifier, and send the to-be-reported information to the control center.

[0062] The to-be-reported information is information generated by the control unit and to be reported to the control center. For example, the to-be-reported information can be used to describe the state of the corresponding electromagnetic pilot valve to the control center.

[0063] The bus type electro-hydraulic control device based on the embodiments of the present disclosure can realize integration of the remote controller and the control bus (not limited to the CAN bus), so that the bus valve has a remote control function, and automatic addressing of the bus valve is realized through physical information.

[0064] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the present disclosure cover any and all variations of the present disclosure comprising features that are within its spirit and scope. The specification and examples are illustrative only and not intended to be limiting on the true scope and spirit of the present disclosure.

[0065] It should be understood that the present disclosure is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be effected therein by those skilled in the art without departing from the scope of the application. The scope of the application should be limited only by the appended claims.

[0066] It should be noted that in the description of the present disclosure, the terms "first", "second", and the like are used only for the purpose of description, and should not be construed as indicating or implying relative importance. In addition, in the description of the present disclosure, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0067] Any process or method descriptions or any other descriptions herein can be understood as representing modules, segments, or portions of code that include one or more executable instructions for implementing specific logical functions or steps, and the scope of preferred embodiments of the present disclosure includes alternatives that can be implemented with the functions of the described steps performed in different orders, including substantially simultaneously, or in reverse order, and the like, as will be understood by those skilled in the art.

[0068] It should be understood that various parts of the present disclosure can be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any of the following technologies known in the art or their combinations can be used: discrete logic circuit with logic gate circuit for implementing logical functions on data signals, application specific integrated circuit with suitable combination logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA), etc.

[0069] Those skilled in the art can understand that all or part of the steps of the method carried out by the above-mentioned embodiments can be instructed by a program to the relevant hardware, and the program can be stored in a computer readable storage medium. When the program is executed, it includes one of the steps of the method embodiment or a combination thereof.

[0070] In addition, each functional unit in each embodiment of the present disclosure can be integrated into one processing module, or each unit can exist physically independently, or two or more units can be integrated into one module. The integrated module can be realized in the form of hardware or in the form of a software functional module. When the integrated module is realized in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0071] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0072] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0073] Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present disclosure, and those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present disclosure.

Claims

1. A bus-type electro-hydraulic control device characterized by comprising: The application relates to a valve system, which comprises a control unit, a plurality of electromagnetic pilot valves, a bus module and a main valve body. The control unit and the electromagnetic pilot valves are connected through the bus module. The electromagnetic pilot valves are installed on the main valve body. Each of the electromagnetic pilot valves has a corresponding address mark at the installation position. The installation position belongs to the main valve body or the bus module. The address mark is used for indicating the layout information of a sensing device in the main valve body or the bus module. The sensing device is used for generating a sensing signal, which is used for indicating the electromagnetic pilot valve to determine the electromagnetic pilot valve mark. The electromagnetic pilot valve is also used for determining the signal layout information of the sensing signal in the corresponding installation position, and determining the electromagnetic pilot valve mark according to the signal layout information. The determination of the electromagnetic pilot valve mark according to the layout information comprises the following steps: Obtaining a preset relationship table, wherein the preset relationship table comprises a plurality of candidate layout information and a candidate mark corresponding to each candidate layout information. Determining the matching result of the signal layout information and the plurality of candidate layout information. According to the matching result, the electromagnetic pilot valve mark is determined from the plurality of candidate marks. The control unit has wireless receiving and sending functions, is used for receiving bus control information sent by a control center, and generates a control signal according to the bus control information.

2. The bus-based electro-hydraulic control of claim 1, wherein, The bus module is used for sending the control signal to the electromagnetic pilot valve and supplying power for the electromagnetic pilot valve. The electromagnetic pilot valve is provided with a plurality of detection devices. The detection device is used for detecting the sensing signal generated by the sensing device.

3. The bus-based electro-hydraulic control of claim 1, wherein, The electromagnetic pilot valve is used for receiving the control signal based on the bus module, and performing a target control action according to the control signal. The electromagnetic pilot valve is also used for determining the state information of the electromagnetic pilot valve, and uploading the electromagnetic pilot valve mark and the state information based on the bus module. The bus module is also used for uploading the state information and the electromagnetic pilot valve mark sent by the electromagnetic pilot valve to the control unit.

4. The bus-based electro-hydraulic control of claim 2, wherein, The control unit is also used for generating to-be-reported information according to the state information and the electromagnetic pilot valve mark, and sending the to-be-reported information to the control center. ​ 5. The bus-based electro-hydraulic control of claim 2, wherein, ​ ​ 6. A bus electro-hydraulic control device as defined in claim 5, wherein, ​ ​ ​

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