CN214751468U - Novel comprehensive information monitoring system - Google Patents
Novel comprehensive information monitoring system Download PDFInfo
- Publication number
- CN214751468U CN214751468U CN202121427069.4U CN202121427069U CN214751468U CN 214751468 U CN214751468 U CN 214751468U CN 202121427069 U CN202121427069 U CN 202121427069U CN 214751468 U CN214751468 U CN 214751468U
- Authority
- CN
- China
- Prior art keywords
- module
- information monitoring
- monitoring device
- video
- comprehensive information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Testing And Monitoring For Control Systems (AREA)
Abstract
The utility model relates to the technical field of control systems, in particular to a novel comprehensive information monitoring system, which comprises a comprehensive information monitoring device, a field interface device and a data processing device, wherein the comprehensive information monitoring device is used for receiving a user control request, generating instruction data and sending the instruction data to the field interface device; receiving feedback data sent by a field interface device; receiving a live video sent by a video monitoring device; the field interface device is used for receiving instruction data of the comprehensive information monitoring device, controlling the subsystem equipment according to the instruction data, generating feedback data and sending the feedback data to the comprehensive information monitoring device; and the video monitoring device is used for acquiring the site video and sending the site video to the comprehensive information monitoring device. The utility model discloses a to each branch system data information's collection and demonstration among the novel comprehensive information monitored control system, interface design is graceful, and extended function is nimble, through the level control of software, guarantees the reproducibility of bottom software.
Description
Technical Field
The utility model relates to a control system technical field specifically is a novel comprehensive information monitored control system.
Background
In the current ship application field, equipment such as a ship power system, a propulsion system and the like has very much operation data information, the mode of comprehensively monitoring and displaying various information is limited in a limited space, data uploading is mostly carried out through respective acquisition equipment, the hard wiring and communication modes are more, and the actual equipment is widely distributed and is not beneficial to centralized processing of data; and the existing comprehensive display system lacks the application monitoring of the video state of the actual equipment, which is not beneficial to the grasp of the actual situation of the crew in monitoring the relevant operation data.
The existing related monitoring system is lack of a device suitable for carrying out comprehensive information monitoring and video monitoring on distributed equipment in the technology, and the problem of missing measures exists.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel comprehensive information monitoring system to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a novel integrated information monitoring system, comprising:
the comprehensive information monitoring device is used for receiving a user control request, generating instruction data and sending the instruction data to the field interface device; receiving feedback data sent by a field interface device; receiving a live video sent by a video monitoring device;
the field interface device is used for receiving instruction data of the comprehensive information monitoring device, controlling the subsystem equipment according to the instruction data, generating feedback data and sending the feedback data to the comprehensive information monitoring device;
and the video monitoring device is used for acquiring the site video and sending the site video to the comprehensive information monitoring device.
As a further technical scheme of the utility model: the integrated information monitoring apparatus specifically includes:
a power supply module;
a display module; the power supply input end of the display module is connected with the power supply module;
a stiffener module; the reinforcing machine module comprises an Ethernet communication end, a VGA (video graphics array) and a DVI (digital visual interface) port, wherein the Ethernet communication end is used for being connected with a video monitoring device, and the VGA and DVI port are both connected with the display module;
a PLC controller module; the PLC module comprises a PROFINET communication end which is used for being connected with the field interface device; and the power input end of the PLC module is connected with the power module.
As a further technical scheme of the utility model: the stiffener module specifically includes:
a hardware power supply module; the hardware power supply module is connected with the power supply module;
a hardware motherboard module; the power supply input end of the hardware mainboard module is connected with the hardware power supply module, and the communication end of the hardware mainboard module is connected with a hardware communication module;
the WINCC monitoring software module is installed on the hardware mainboard module; the WINCC monitoring software module is connected with a PROFINET communication end of the PLC module; and
the video display software module is installed on the hardware mainboard module; the video monitoring device is used for being connected with the video monitoring device through the Ethernet communication terminal.
As a further technical scheme of the utility model: the PLC controller module specifically comprises:
the power supply input end of the CPU unit is connected with the power supply module;
the serial port communication unit is connected with the CPU unit; and
and the digital quantity/analog quantity acquisition unit is connected with the CPU unit.
As a further technical scheme of the utility model: the field interface device specifically includes:
an ET200M module; and
and the serial port communication unit is connected with the distributed ET200M module in a rack-mounted connection mode.
As a further technical scheme of the utility model: the serial port communication unit includes:
a siemens serial port communication module CP341, wherein the siemens serial port communication module CP341 supports PROFINET network function;
12S 7-300I/O modules; and
2 RJ45 interfaces, the RJ45 interface supports hot plugging.
As a further technical scheme of the utility model: the comprehensive information monitoring device also comprises input equipment; the comprehensive information monitoring device and the field interface device are arranged on the internal platform of the cabin in a distributed mode.
As a further technical scheme of the utility model: the input device is at least a mouse, a keyboard or a combination of the two.
As a further technical scheme of the utility model: and a shock absorber is arranged between the comprehensive information monitoring device and the cabin internal platform.
As a further technical scheme of the utility model: and a shock absorber is arranged between the field interface device and the cabin internal platform.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a Siemens series PLC controller passes through CPU unit, serial communication unit, digital quantity/analog quantity acquisition unit and realizes the collection, the serial devices communication to switching value analog quantity signal, integrated PROFINET interface, has medium-scale program storage capacity and program frame, uses with centralized IO and distributing type IO together, simple and practical distributing type structure and general network ability, satisfies very well and adapts to automated control demand, the stable performance.
The utility model discloses a distributed IO module of the ET200M series of high performance, integrated PROFINET interface support the hot plug of taking, possess integrated optical fiber interface's module, can be used to advantages such as redundant configuration, can apply to distributed equipment control and monitoring according to actual demand is nimble, have better nimble extensible and maintainability.
The utility model discloses a to each branch collection and demonstration of system data information among the novel comprehensive information monitoring system, host computer monitoring interface adopts WINCC software design, has integrateed advanced technologies such as SCADA, configuration, Script (Script) language and OPC, and interface design is graceful, and extended function is nimble, and through the level control of software, guarantees the reproducibility of bottom software. Meanwhile, the comprehensive information monitoring device runs video monitoring software, and displays the video monitoring software and the WINCC monitoring software in a split screen mode, and has the characteristics of monitoring visibility of equipment states and data of various subsystems such as an electric power system, a shafting system, power grid information and the like.
Drawings
In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a schematic diagram of the novel comprehensive information monitoring system provided by the technical solution of the present invention.
Fig. 2 is a schematic diagram of the comprehensive information monitoring device in the novel comprehensive information monitoring system according to the technical solution of the present invention.
Fig. 3 is a schematic diagram of a field interface device in a novel integrated information monitoring system according to the present invention.
Fig. 4 is a schematic view of a work flow of the novel comprehensive information monitoring system provided in the technical solution of the present invention.
Fig. 5 is a schematic view of a first device structure of a novel comprehensive information monitoring system provided in the technical solution of the present invention.
Fig. 6 is a schematic structural diagram of a second device of the novel comprehensive information monitoring system according to the present invention.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1, in an embodiment of the present invention, a novel integrated information monitoring system is provided, including:
the comprehensive information monitoring device is used for receiving a user control request, generating instruction data and sending the instruction data to the field interface device; receiving feedback data sent by a field interface device; receiving a live video sent by a video monitoring device;
the field interface device is used for receiving instruction data of the comprehensive information monitoring device, controlling the subsystem equipment according to the instruction data, generating feedback data and sending the feedback data to the comprehensive information monitoring device;
and the video monitoring device is used for acquiring the site video and sending the site video to the comprehensive information monitoring device.
The utility model discloses an in an example, the information monitoring device of synthesizing passes through PROFINET communication and is connected with on-the-spot interface arrangement, the information monitoring device of synthesizing passes through the Ethernet communication and is connected with certain on-the-spot video equipment, on-the-spot interface arrangement passes through serial ports RS485 communication and is connected with each subsystem equipment. The utility model discloses a Siemens series adds controllers such as machine, PLC and ET200M, constitutes distributed acquisition system, moves WINCC supervisory software and video display software, and better adaptation does benefit to stable collection and the transmission of data message in multiple serial ports communication field device.
Referring to fig. 1-2, the integrated information monitoring apparatus includes a power module, a display module, a ruggedizer module, a PLC controller module, and an operation panel, where a power input end of the ruggedizer module is connected to the power module, a power input end of the display module is connected to the power module, a power input end of the PLC controller module is connected to the power module, an Ethernet communication end of the ruggedizer module is connected to an external field video device, VGA and DVI ports of the ruggedizer module are connected to the display module, and a PROFINET communication end of the PLC controller module is connected to a field interface device.
As shown in fig. 1-2, the reinforcing machine module includes a hardware communication module, a WINCC monitoring software module, a video display software module, a hardware mainboard module and a hardware power module, the power input end of the hardware mainboard module is connected with the hardware power module, the communication end of the hardware mainboard module is connected with the hardware communication module, the hardware mainboard module is connected with a WINCC monitoring control software module and a video display software module, the hardware power module is connected with the power module, the WINCC monitoring software module is in communication connection with the PLC controller module through PROFINET, and the video display software module is in communication connection with a certain field video device through Ethernet.
As shown in fig. 1-2, the PLC controller module includes a CPU unit, a serial communication unit, and a digital/analog acquisition unit, wherein a power input end of the CPU unit is connected to a power module, the CPU unit is connected to the serial communication unit, and the CPU unit is connected to the digital/analog acquisition unit.
It should be mentioned that the integrated information monitoring device is the end interacting with the direct user, since it interacts with the user, there must be a corresponding input device, because the hardware architecture of the technical solution of the present invention is mostly a personal computer, not a smart phone type device, and the input device is at least a mouse, a keyboard or a combination thereof; certainly, with the advance of science and technology, touch screen signal can gradually become the mainstream input mode of the utility model, but in the present specific application of the utility model, still take mouse, keyboard or the input mode of combination thereof as the main.
The comprehensive information monitoring device and the field interface device can be hardware or software. When the integrated information monitoring device and the field interface device are hardware, a distributed service equipment group consisting of a plurality of service equipment can be realized, and single service equipment can also be realized. When the service device is software, it may be implemented as a plurality of software or software modules, or may be implemented as a single software or software module. And is not particularly limited herein.
The video monitoring device can be hardware or software. When the video monitoring device is hardware, the video monitoring device is electronic equipment with communication and video recording functions, and when the video monitoring device is software, the video monitoring device can be installed in the electronic equipment. It may be implemented as multiple pieces of software or software modules, or as a single piece of software or software module. And is not particularly limited herein.
Further, the comprehensive information monitoring device and the field interface device are hardware, and are arranged on a cabin internal platform through a shock absorber in a distributed mode; if the integrated information monitoring device and the field interface device are software, the hardware equipment is arranged on a platform in the cabin in a distributed mode through a shock absorber.
Specifically, the field interface device is a lower computer of the integrated information monitoring device, the field interface device includes a distributed ET200M module and a serial communication unit, and the distributed ET200M module and the serial communication unit are connected in a rack type.
In a preferred embodiment of the present invention, a novel method for monitoring and controlling integrated information is provided, the method includes:
step S200: receiving a user control request and generating instruction data;
step S400: sending the instruction data to a field interface device;
step S600: receiving feedback data sent by a field interface device;
step S800: receiving a live video sent by a video monitoring device;
and the feedback data is generated by the field interface device according to the received instruction data sent by the comprehensive information monitoring device.
To sum up, it is right the utility model discloses technical scheme carries out an wholeness description, the system includes integrated information monitoring device and on-the-spot interface arrangement, integrated information monitoring device passes through PROFINET communication and is connected with on-the-spot interface arrangement, integrated information monitoring device passes through Ethernet communication and is connected with video monitoring device, on-the-spot interface arrangement passes through serial ports RS485 communication and is connected with each subsystem equipment. The utility model adopts Siemens IPC series reinforcing machine, has higher system availability and data security, higher interface expansion flexibility, and realizes the monitoring and display of the contents of each subsystem data such as power grid information current, voltage parameter, each cabin valve switch state, water pump running state and the like by operating WINCC monitoring software; the comprehensive information monitoring device adopts Siemens 300PLC to realize uploading and issuing of collected data through PROFINET communication, has short program cycle period, high processing speed and powerful instruction set function and can be used for complex functions; the field interface device adopts an ET200M series distributed IO module controller, a plurality of Siemens serial port communication modules CP341 are pre-installed, centralized collection of data of all subsystems is realized, the field interface device has the function of comprehensively supporting PROFINET network, 12S 7-300I/O modules are simultaneously connected, the communication speed reaches 10/100Mbps, 2 RJ45 interfaces are integrated in a full duplex and self-adaptive mode, a linear topological structure is easily realized, and application advantages and characteristics such as hot plugging and the like are supported.
In the utility model discloses an in implementing, fig. 4 shows the utility model discloses technical scheme provides a novel comprehensive information monitored control system's work flow schematic diagram, and it has reacted the utility model discloses technical scheme is a concrete basic flow in actual work, for the work flow of comprehensive information monitoring device end.
Referring to fig. 5-6, the functions that can be implemented by the novel comprehensive information monitoring method are implemented by a computer device, which includes one or more processors and one or more memories, and the one or more memories store at least one program code, and the program code is loaded and executed by the one or more processors to implement the functions of the novel comprehensive information monitoring method.
The processor fetches instructions and analyzes the instructions one by one from the memory, then completes corresponding operations according to the instruction requirements, generates a series of control commands, enables all parts of the computer to automatically, continuously and coordinately act to form an organic whole, realizes the input of programs, the input of data, the operation and the output of results, and the arithmetic operation or the logic operation generated in the process is completed by the arithmetic unit; the Memory comprises a Read-Only Memory (ROM) for storing a computer program, and a protection device is arranged outside the Memory.
Illustratively, a computer program may be partitioned into one or more modules, which are stored in a memory and executed by a processor to implement the present invention. One or more of the modules may be a series of computer program instruction segments capable of performing certain functions, which are used to describe the execution of the computer program in the terminal device.
Those skilled in the art will appreciate that the above description of the service device is merely exemplary and not limiting of the terminal device, and may include more or less components than those described, or combine certain components, or different components, such as may include input output devices, network access devices, buses, etc.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like, which is the control center of the terminal equipment and connects the various parts of the entire user terminal using various interfaces and lines.
The memory may be used to store computer programs and/or modules, and the processor may implement various functions of the terminal device by operating or executing the computer programs and/or modules stored in the memory and calling data stored in the memory. The memory mainly comprises a storage program area and a storage data area, wherein the storage program area can store an operating system, application programs (such as an information acquisition template display function, a product information publishing function and the like) required by at least one function and the like; the storage data area may store data created according to the use of the berth-state display system (e.g., product information acquisition templates corresponding to different product types, product information that needs to be issued by different product providers, etc.), and the like. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
The terminal device integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, the present invention may also realize that all or part of the modules/units in the system according to the above embodiments may be implemented by instructing the relevant hardware through a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the computer program may realize the functions of the above embodiments of the systems. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A novel comprehensive information monitoring system is characterized in that the system specifically comprises:
the comprehensive information monitoring device is used for receiving a user control request, generating instruction data and sending the instruction data to the field interface device; receiving feedback data sent by a field interface device; receiving a live video sent by a video monitoring device;
the field interface device is used for receiving instruction data of the comprehensive information monitoring device, controlling the subsystem equipment according to the instruction data, generating feedback data and sending the feedback data to the comprehensive information monitoring device;
and the video monitoring device is used for acquiring the site video and sending the site video to the comprehensive information monitoring device.
2. The integrated information monitoring system according to claim 1, wherein the integrated information monitoring device specifically includes:
a power supply module;
a display module; the power supply input end of the display module is connected with the power supply module;
a stiffener module; the reinforcing machine module comprises an Ethernet communication end, a VGA (video graphics array) and a DVI (digital visual interface) port, wherein the Ethernet communication end is used for being connected with a video monitoring device, and the VGA and DVI port are both connected with the display module;
a PLC controller module; the PLC module comprises a PROFINET communication end which is used for being connected with the field interface device; and the power input end of the PLC module is connected with the power module.
3. The novel comprehensive information monitoring system according to claim 2, wherein the reinforcing machine module specifically comprises:
a hardware power supply module; the hardware power supply module is connected with the power supply module;
a hardware motherboard module; the power supply input end of the hardware mainboard module is connected with the hardware power supply module, and the communication end of the hardware mainboard module is connected with a hardware communication module;
the WINCC monitoring software module is installed on the hardware mainboard module; the WINCC monitoring software module is connected with a PROFINET communication end of the PLC module; and
the video display software module is installed on the hardware mainboard module; the video monitoring device is used for being connected with the video monitoring device through the Ethernet communication terminal.
4. The novel integrated information monitoring system according to claim 3, wherein the PLC controller module specifically comprises:
the power supply input end of the CPU unit is connected with the power supply module;
the serial port communication unit is connected with the CPU unit; and
and the digital quantity/analog quantity acquisition unit is connected with the CPU unit.
5. The integrated information monitoring system according to claim 1, wherein the field interface device comprises:
distributed ET200M module; and
and the serial port communication unit is connected with the distributed ET200M module in a rack-mounted connection mode.
6. The integrated information monitoring system according to claim 5, wherein the serial port communication unit comprises:
a siemens serial port communication module CP341, wherein the siemens serial port communication module CP341 supports PROFINET network function;
12S 7-300I/O modules; and
2 RJ45 interfaces, the RJ45 interface supports hot plugging.
7. The novel integrated information monitoring system of claim 1, wherein said integrated information monitoring apparatus further comprises an input device; the comprehensive information monitoring device and the field interface device are arranged on the internal platform of the cabin in a distributed mode.
8. The novel integrated information monitoring system of claim 7, wherein said input device is at least a mouse, a keyboard, or a combination thereof.
9. The novel integrated information monitoring system of claim 7, wherein a shock absorber is provided between the integrated information monitoring device and the platform inside the cabin.
10. The system according to any one of claims 7-9, wherein a shock absorber is disposed between said site interface device and said platform inside said hold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121427069.4U CN214751468U (en) | 2021-06-25 | 2021-06-25 | Novel comprehensive information monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121427069.4U CN214751468U (en) | 2021-06-25 | 2021-06-25 | Novel comprehensive information monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214751468U true CN214751468U (en) | 2021-11-16 |
Family
ID=78630839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121427069.4U Active CN214751468U (en) | 2021-06-25 | 2021-06-25 | Novel comprehensive information monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214751468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113433859A (en) * | 2021-06-25 | 2021-09-24 | 武汉南华工业设备工程股份有限公司 | Novel comprehensive information monitoring system, method, computer equipment and storage medium |
-
2021
- 2021-06-25 CN CN202121427069.4U patent/CN214751468U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113433859A (en) * | 2021-06-25 | 2021-09-24 | 武汉南华工业设备工程股份有限公司 | Novel comprehensive information monitoring system, method, computer equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8255095B2 (en) | Modular avionics system of an aircraft | |
| CN101938164B (en) | Power equipment control method, device and related system thereof | |
| CN103312763B (en) | FTP client FTP, management server, workspace environment setting method and workspace environment set program | |
| CN103176417B (en) | The automation control method able to programme of a kind of compatible EPICS and device | |
| CN101996693A (en) | Configuration system for reactor protection system | |
| CN112541203B (en) | Electrical design method and electrical design system | |
| CN102608946A (en) | Programmable logic controller (PLC) experimental system | |
| KR20110009769A (en) | Structure of rackmount computer | |
| CN214751468U (en) | Novel comprehensive information monitoring system | |
| CN103907078A (en) | System and method for input sharing between multiple devices | |
| CN104009882A (en) | Equivalent satellite power supply system testing method and system based on distributed architecture | |
| CN113954679B (en) | Edge control equipment applied to ordered charging control of electric automobile | |
| CN115525323A (en) | Distributed relay protection system generation method and device, electronic equipment and medium | |
| CN113433859A (en) | Novel comprehensive information monitoring system, method, computer equipment and storage medium | |
| CN111653231B (en) | Display screen configuration method, device and system and display control system | |
| CN204644604U (en) | A kind of sewing device update device | |
| Basile et al. | A two-stage modelling architecture for distributed control of real-time industrial systems: Application of UML and Petri Net | |
| CN104790128A (en) | Sewing-device upgrading device | |
| CN203773317U (en) | Distributed control system | |
| CN103313471A (en) | Lighting console digitized multi-mode control system | |
| CN115268298A (en) | Simulation test method, simulation test device, electronic equipment and storage medium | |
| CN100447714C (en) | Online switching interfaces of peripheral devices in multitask mode computer | |
| CN202548562U (en) | PLC (Programmable Logic Controller) experiment system | |
| CN202413793U (en) | Machine case of traction control unit of electric locomotive and electric locomotive | |
| CN101859307A (en) | Keyboard-screen-mouse switcher, computer system and file searching method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |