Direct current switch cabinet system

Abstract

The invention provides a direct current switch cabinet system. The system comprises a programmable logic controller, a human-computer interface and an upper computer, wherein the programmable logic controller is respectively communicated with the human-computer interface and the upper computer, and the human-computer interface is also communicated with the upper computer. According to the technical scheme, modularization and decentration of data storage can be achieved, the performance requirement of the programmable logic controller is lowered, cost is reduced, higher response speed and larger running data storage capacity are achieved, and rich customization of data display is achieved.

Description

Technical Field

[0001] The present invention relates to the field of rail transportation, and in particular to a DC switch cabinet system. Background Art

[0002] The operating data of traditional DC switchgear is usually stored directly on the programmable logic controller (PLC). The PLC processes the operating data and then sends the data to be displayed to the human-machine interface for display. This usually requires the PLC to have a large storage space and processing performance. Summary of the Invention

[0003] To achieve the above objectives, the present invention proposes a DC switchgear system that can realize modularization and decentralization of data storage, reduce the performance requirements of programmable logic controllers, reduce costs, achieve faster response speed and larger operating data storage capacity, and realize rich customization of data display.

[0004] A DC switch cabinet system proposed in an embodiment of the present invention includes: a programmable logic controller, a human-machine interface and a host computer; wherein the programmable logic controller communicates with the human-machine interface and the host computer respectively, and the human-machine interface also communicates with the host computer.

[0005] In one embodiment, bidirectional communication is performed between the programmable logic controller and the human-machine interface, the programmable logic controller and the host computer perform bidirectional communication via the Modbus TCP protocol, and the human-machine interface and the host computer perform bidirectional communication via a proprietary protocol.

[0006] In one embodiment, the programmable logic controller is installed in a DC switch cabinet, and the human-machine interface is installed on a panel of the DC switch cabinet.

[0007] In one embodiment, the programmable logic controller is used to collect operating data in the DC switch cabinet, and send the operating data to the human-machine interface and the host computer, and perform control based on the control instructions sent by the host computer and the control logic stored in the programmable logic controller; the human-machine interface locally stores the operating data received from the programmable logic controller, and displays display data processed by the host computer based on the operating data; the host computer performs data processing based on the received operating data to generate display data and / or control instructions.

[0008] In one embodiment, the host computer is also used to display data remotely, thereby achieving modularization and decentralization of data storage, reducing the performance requirements of the programmable logic controller, reducing costs, achieving faster response speed and larger operating data storage capacity, and realizing rich customization of data display. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0010] Figure 1 1 is a schematic diagram of the architecture of a DC switchgear system according to an embodiment of the present invention.

[0011] The following are the descriptions of the reference numerals:

[0012] serial number meaning 100 A DC switchgear system 101 Programmable Logic Controller 102 Human-Machine Interface 103 Host computer DETAILED DESCRIPTION

[0013] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0014] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0015] As used in this application and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0016] Figure 1 FIG. 1 is a schematic diagram of the architecture of a DC switch cabinet system 100 according to an embodiment of the present invention. Figure 1 As shown, the system 100 may include:

[0017] Programmable logic controller 101, human-machine interface 102 and host computer 103; wherein, the programmable logic controller 101 communicates with the human-machine interface 102 and the host computer 103 respectively, and the human-machine interface 102 also communicates with the host computer 103.

[0018] In one embodiment, bidirectional communication is performed between the programmable logic controller 101 and the human-machine interface 102, the programmable logic controller 101 and the host computer 103 perform bidirectional communication via the Modbus TCP protocol, and the human-machine interface 102 and the host computer (103) perform bidirectional communication via a proprietary protocol.

[0019] In one embodiment, the programmable logic controller 102 is installed in a DC switch cabinet, and the human-machine interface 102 is installed on a panel of the DC switch cabinet.

[0020] In one embodiment, the programmable logic controller 102 is used to collect operating data in the DC switch cabinet, and send the operating data to the human-machine interface 102 and the host computer 103, and perform control based on the control instructions sent by the host computer 103 and the control logic stored in the programmable logic controller 101; the human-machine interface 102 locally stores the operating data received from the programmable logic controller 101, and displays the display data processed by the host computer 103 based on the operating data; the host computer 103 performs data processing based on the received operating data to generate display data and / or control instructions.

[0021] In one embodiment, the host computer 103 is also used to display the display data remotely.

[0022] Specifically, the main functions of the programmable logic controller (PLC) include data collection, logic control, and circuit control; the main functions of the human-machine interface (HMI) include data storage and local data display; the main functions of the host computer (PC) include data processing, local data display, remote data display, and remote control.

[0023] Specifically, through the above system, data storage modularization and decentralization can be achieved, the performance requirements of programmable logic controllers can be reduced, costs can be reduced, faster response speeds and larger operating data storage capacity can be achieved, and rich customization of data display can be achieved.

[0024] Some aspects of the methods and apparatus of the present invention may be performed entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. The above hardware or software may be referred to as "data blocks," "modules," "engines," "units," "components," or "systems." The processor may be one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DAPDs), programmable logic devices (PLCs), field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, or combinations thereof. In addition, various aspects of the present invention may be embodied as computer products in one or more computer-readable media, the product including computer-readable program code. For example, computer-readable media may include, but are not limited to, magnetic storage devices (e.g., hard disks, floppy disks, tapes, etc.), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., cards, sticks, key drives, etc.).

[0025] Flowcharts are used herein to illustrate the operations performed by the methods according to the embodiments of the present application. It should be understood that the preceding operations are not necessarily performed in exact order. Instead, the various steps may be performed in reverse order or simultaneously. Furthermore, other operations may be added to these processes, or one or more operations may be removed from these processes.

[0026] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0027] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A DC switch cabinet system (100), characterized in that: The system comprises: A programmable logic controller (101), a human-machine interface (102) and a host computer (103); wherein the programmable logic controller (101) communicates with the human-machine interface (102) and the host computer (103) respectively, and the human-machine interface (102) also communicates with the host computer (103).

2. The system according to claim 1, wherein: The programmable logic controller (101) and the human-machine interface (102) perform two-way communication, the programmable logic controller (101) and the host computer (103) perform two-way communication via the Modbus TCP protocol, and the human-machine interface (102) and the host computer (103) perform two-way communication via a private protocol.

3. The system according to claim 1, wherein: The programmable logic controller (101) is installed in a DC switch cabinet, and the human-machine interface (102) is installed on a panel of the DC switch cabinet.

4. The system according to claim 1, wherein: The programmable logic controller (101) is used to collect operating data in the DC switch cabinet, and send the operating data to the human-machine interface (102) and the host computer (103), and perform control based on the control instructions sent by the host computer (103) and the control logic stored in the programmable logic controller (101); The human-machine interface (102) locally stores the received operating data sent by the programmable logic controller (101), and displays the display data processed by the host computer (103) based on the operating data; The host computer (103) performs data processing based on the received operating data to generate display data and / or control instructions.

5. The system according to claim 4, characterized in that The host computer (103) is also used to display the display data at the remote end.

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