Device and method for monitoring opening state of throttle lever of nuclear power emergency diesel engine

Abstract

The invention discloses a nuclear power emergency diesel engine throttle lever opening state monitoring device and method, and the device comprises an industrial camera which is opposite to a nuclear power emergency diesel engine throttle lever opening dial plate and is used for obtaining the image information of the nuclear power emergency diesel engine throttle lever opening dial plate; and the visual controller is connected with the industrial camera and is used for analyzing the image information frame by frame so as to judge whether the starting process of the nuclear power emergency diesel engine is normal or not. The change process of the nuclear power emergency diesel engine throttle lever opening pointer is analyzed through image processing, compared with human eye observation, judgment is more accurate, whether the nuclear power emergency diesel engine starting process is normal or not can be judged, and the problem that nuclear power emergency diesel engine throttle lever opening signals cannot be synchronously analyzed with other diesel engine digital signals is solved.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear power, and in particular to a device and method for monitoring the throttle lever opening state of a nuclear power emergency diesel engine. Background Art

[0002] The existing method for monitoring the change of the throttle lever opening pointer in nuclear power plants is that the test personnel hold a mobile phone and record a video during the diesel engine startup process. Afterwards, the change of the throttle lever opening pointer is obtained by analyzing the video.

[0003] During the start-up and operation of the diesel engine, there is a lot of noise and vibration on site, and the environment is harsh. The maximum frame rate of the video recorded by the mobile phone is 30Hz. It is not intuitive to view the pointer position through the picture converted from the video. The data of multiple tests cannot be directly compared and analyzed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a device and method for monitoring the throttle lever opening state of a nuclear power emergency diesel engine.

[0005] The technical solution adopted by the present invention to solve the technical problem is: construct a nuclear power emergency diesel engine throttle lever opening state monitoring device, comprising:

[0006] An industrial camera is arranged opposite to the throttle lever opening dial of the nuclear power emergency diesel engine, and is used to obtain image information of the throttle lever opening dial of the nuclear power emergency diesel engine;

[0007] The visual controller is connected to the industrial camera and is used to analyze the image information frame by frame to determine whether the nuclear power emergency diesel engine startup process is normal.

[0008] In some embodiments, the nuclear power emergency diesel engine throttle lever opening state monitoring device also includes a switch connected to the visual controller, and a server connected to the switch.

[0009] In some embodiments, the nuclear power emergency diesel engine throttle lever opening state monitoring device also includes a display connected to the visual controller or the server.

[0010] In some embodiments, the nuclear power emergency diesel engine throttle lever opening state monitoring device also includes a light source installed on or near the industrial camera.

[0011] In some embodiments, the light source comprises an LED light source.

[0012] In some embodiments, the industrial camera is connected to the vision controller via wired or wireless communication.

[0013] The present invention also discloses a method for monitoring the throttle lever opening state of a nuclear power emergency diesel engine, which is applied to the throttle lever opening state monitoring device for a nuclear power emergency diesel engine described in any of the above embodiments. The method for monitoring the throttle lever opening state of a nuclear power emergency diesel engine comprises:

[0014] Acquire image information of the throttle lever opening dial of the nuclear power emergency diesel engine;

[0015] The image information is analyzed frame by frame to determine whether the nuclear power emergency diesel engine startup process is normal.

[0016] In some embodiments, the frame-by-frame analysis of the image information includes: analyzing the position of the nuclear power emergency diesel engine throttle lever opening dial pointer in each frame of the image, and combining the rotation radius of the nuclear power emergency diesel engine throttle lever opening dial pointer and the dial scale of the nuclear power emergency diesel engine throttle lever opening dial, calculating the reading of the nuclear power emergency diesel engine throttle lever opening dial pointer on each frame of the image.

[0017] In some embodiments, the nuclear power emergency diesel engine throttle lever opening state monitoring method further includes: combining the reading of each frame of the image with the image taking time to draw a curve of the change of the throttle lever opening dial pointer of the nuclear power emergency diesel engine.

[0018] In some embodiments, whether the starting process of the nuclear power emergency diesel engine is normal is judged based on the change curve of the opening of the pointer on the throttle lever opening dial of the nuclear power emergency diesel engine.

[0019] The implementation of the present invention has the following beneficial effects: by analyzing the change process of the throttle lever opening pointer of the nuclear power emergency diesel engine through image processing, the judgment is more accurate than human eye observation, and it can judge whether the starting process of the nuclear power emergency diesel engine is normal, which solves the difficulty that the throttle lever opening signal of the nuclear power emergency diesel engine cannot be synchronously analyzed with other diesel engine digital signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work. In the drawings:

[0021] Figure 1 is a schematic diagram of a nuclear power emergency diesel engine throttle lever opening state monitoring device in some embodiments of the present invention;

[0022] Figure 2 It is an application schematic diagram of a nuclear power emergency diesel engine throttle lever opening state monitoring device in some embodiments of the present invention. DETAILED DESCRIPTION

[0023] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0024] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0025] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0026] See also Figure 1 and Figure 2 The present invention shows a nuclear power emergency diesel engine throttle lever opening state monitoring device, including an industrial camera 10 and a visual controller 20.

[0027] The industrial camera 10 is arranged opposite to the nuclear power emergency diesel engine throttle lever opening dial 101, and is used to obtain image information of the nuclear power emergency diesel engine throttle lever opening dial 101. The image information may include picture information and video information.

[0028] The visual controller 20 is connected to the industrial camera 10 and is used to analyze the image information frame by frame to determine whether the startup process of the nuclear power emergency diesel engine 100 is normal. The visual controller 20 can be used to power the industrial camera 10, and can control the industrial camera 10 to shoot in real time, and process and store image information (which may include picture information and video information) in real time, and can convert the pointer position in the image information into an analog value through a visual processing algorithm.

[0029] In some embodiments, the industrial camera 10 can be mounted on a mounting frame arranged opposite to the nuclear power emergency diesel engine throttle lever opening dial 101, and the industrial camera 10 can be moved along the height direction of the mounting frame to adjust the height position of the industrial camera 10 to improve its practicality. The parameters of the industrial camera 10 can be shown in Table 1 below.

[0030] Table 1

[0031]

[0032] In some embodiments, the nuclear power emergency diesel engine throttle lever opening state monitoring device further includes a switch 30 connected to the visual controller 20, and a server 40 connected to the switch 30. The server 40 can be used to store image information or processed information. The server 40 may include a cloud server.

[0033] In some embodiments, the nuclear power emergency diesel engine throttle lever opening state monitoring device further includes a display connected to the visual controller 20 or the server 40, and the display can be used to display graphic information or processed information.

[0034] In some embodiments, the nuclear power emergency diesel engine throttle lever opening state monitoring device further includes a light source 50 installed on the industrial camera 10 or near the industrial camera 10. The light source 50 includes an LED light source. Setting the light source 50 can increase the brightness so as to capture clear image information. In some embodiments, the nuclear power emergency diesel engine throttle lever opening state monitoring device further includes a lens 60 that matches the industrial camera 10, and through the configuration of the lens 60 of different specifications, clear image information is obtained.

[0035] In some embodiments, the industrial camera 10 and the vision controller 20 are connected to each other via wired or wireless communication.

[0036] The nuclear power emergency diesel engine throttle lever opening state monitoring device includes an industrial camera 10, a visual controller 20 and other equipment. During the start-up process of the nuclear power emergency diesel engine 100, the industrial camera 10 quickly collects the image of the nuclear power emergency diesel engine throttle lever opening dial 101. After the nuclear power emergency diesel engine 100 is started, the collected images are stored in the hard disk of the visual controller 20 in time order, and the visual controller 20 analyzes them frame by frame.

[0037] The analysis process is as follows: First, the position of the pointer in each frame of the image is identified by the image processing algorithm, and the pointer's rotation radius and the dial scale are combined to calculate the pointer reading on each frame of the image. Then, the reading of each frame of the image is combined with the image shooting time to draw a curve of the change of the throttle lever opening of the nuclear power emergency diesel engine. Finally, according to the throttle lever opening curve of the nuclear power emergency diesel engine, it is judged whether the starting process of the nuclear power emergency diesel engine 100 is normal, and the actual speed of the nuclear power emergency diesel engine 100 is compared with the throttle lever opening of the nuclear power emergency diesel engine to comprehensively judge the operating status of the nuclear power emergency diesel engine 100.

[0038] Whether the starting process of the nuclear power emergency diesel engine 100 is normal is judged according to the change curve of the throttle lever opening of the nuclear power emergency diesel engine 100. During the starting process of the nuclear power emergency diesel engine 100, the throttle lever opening pointer of the nuclear power emergency diesel engine will change rapidly with the throttle size. By analyzing the change process of the throttle lever opening pointer of the nuclear power emergency diesel engine, it is confirmed whether the throttle opening of the nuclear power emergency diesel engine 100 is consistent with the speed curve of the nuclear power emergency diesel engine 100, so as to judge whether the starting process of the nuclear power emergency diesel engine 100 is normal. If the throttle opening of the nuclear power emergency diesel engine 100 is consistent with the speed curve of the nuclear power emergency diesel engine 100, the starting process of the nuclear power emergency diesel engine 100 is normal.

[0039] The present application also discloses a method for monitoring the throttle lever opening state of a nuclear power emergency diesel engine, which is applied to the throttle lever opening state monitoring device of the nuclear power emergency diesel engine in the above embodiment. The method for monitoring the throttle lever opening state of a nuclear power emergency diesel engine comprises:

[0040] The image information of the nuclear power emergency diesel engine throttle lever opening dial 101 is obtained.

[0041] The image information is analyzed frame by frame to determine whether the starting process of the nuclear power emergency diesel engine 100 is normal.

[0042] In some embodiments, the frame-by-frame analysis of the image information includes: analyzing the position of the pointer of the nuclear power emergency diesel engine throttle lever opening dial 101 in each frame of the image, and combining the rotation radius of the pointer of the nuclear power emergency diesel engine throttle lever opening dial 101 and the dial scale of the nuclear power emergency diesel engine throttle lever opening dial 101, calculating the reading of the pointer of the nuclear power emergency diesel engine throttle lever opening dial 101 on each frame of the image.

[0043] In some embodiments, the nuclear power emergency diesel engine throttle lever opening state monitoring method further includes: combining the reading of each frame of the image with the image shooting time to draw a curve of the change of the pointer opening of the nuclear power emergency diesel engine throttle lever opening dial 101.

[0044] In some embodiments, whether the starting process of the nuclear power emergency diesel engine 100 is normal is judged according to the change curve of the opening of the throttle lever opening dial pointer of the nuclear power emergency diesel engine. During the starting process of the nuclear power emergency diesel engine 100, the throttle lever opening pointer of the nuclear power emergency diesel engine will change rapidly with the throttle size. By analyzing the change process of the throttle lever opening pointer of the nuclear power emergency diesel engine, it is confirmed whether the throttle opening of the nuclear power emergency diesel engine 100 is consistent with the speed curve of the nuclear power emergency diesel engine 100, thereby judging whether the starting process of the nuclear power emergency diesel engine 100 is normal. If the throttle opening of the nuclear power emergency diesel engine 100 is consistent with the speed curve of the nuclear power emergency diesel engine 100, the starting process of the nuclear power emergency diesel engine 100 is normal.

[0045] Understandably, according to the current operating status of the nuclear power emergency diesel engine 100, during the startup process of the nuclear power emergency diesel engine 100, the throttle lever opening dial pointer of the nuclear power emergency diesel engine will change rapidly with the throttle size. The original diesel engine throttle opening pointer is a mechanical structure and cannot be uploaded in digital form. This application analyzes the change process of the throttle lever opening pointer of the nuclear power emergency diesel engine through image processing. Compared with human eye observation, the judgment is more accurate. It can judge whether the startup process of the nuclear power emergency diesel engine 100 is normal, and solves the difficulty that the throttle lever opening signal of the nuclear power emergency diesel engine cannot be synchronously analyzed with other diesel engine digital signals.

[0046] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the scope covered by the claims of the present invention.

Claims

1. A nuclear power emergency diesel engine throttle lever opening state monitoring device, characterized in that: include: An industrial camera (10) is arranged opposite to a nuclear power emergency diesel engine throttle lever opening dial (101) and is used to obtain image information of the nuclear power emergency diesel engine throttle lever opening dial (101); A visual controller (20) is connected to the industrial camera (10) and is used to analyze the image information frame by frame to determine whether the start-up process of the nuclear power emergency diesel engine (100) is normal.

2. The nuclear power emergency diesel engine throttle lever opening state monitoring device according to claim 1 is characterized in that: The nuclear power emergency diesel engine throttle lever opening state monitoring device further comprises a switch (30) connected to the visual controller (20), and a server (40) connected to the switch (30).

3. The nuclear power emergency diesel engine throttle lever opening state monitoring device according to claim 2 is characterized in that: The nuclear power emergency diesel engine throttle lever opening state monitoring device further comprises a display connected to the visual controller (20) or the server (40).

4. The nuclear power emergency diesel engine throttle lever opening state monitoring device according to claim 1, characterized in that: The nuclear power emergency diesel engine throttle lever opening state monitoring device further comprises a light source (50) installed on the industrial camera (10) or near the industrial camera (10).

5. The nuclear power emergency diesel engine throttle lever opening state monitoring device according to claim 4 is characterized in that: The light source (50) comprises an LED light source.

6. The nuclear power emergency diesel engine throttle lever opening state monitoring device according to claim 1, characterized in that: The industrial camera (10) and the visual controller (20) are connected in communication via wired or wireless means.

7. A method for monitoring the throttle lever opening state of a nuclear power emergency diesel engine, applied to the throttle lever opening state monitoring device for a nuclear power emergency diesel engine as claimed in any one of claims 1 to 6, characterized in that: The method for monitoring the throttle lever opening state of a nuclear power emergency diesel engine comprises: Acquiring image information of the nuclear power emergency diesel engine throttle lever opening dial (101); The image information is analyzed frame by frame to determine whether the start-up process of the nuclear power emergency diesel engine (100) is normal.

8. The method for monitoring the throttle lever opening state of a nuclear power emergency diesel engine according to claim 7, characterized in that: The frame-by-frame analysis of the image information comprises: analyzing the position of a pointer of a nuclear power emergency diesel engine throttle lever opening dial (101) in each frame of the image, and calculating the reading of the pointer of the nuclear power emergency diesel engine throttle lever opening dial (101) in each frame of the image in combination with the rotation radius of the pointer of the nuclear power emergency diesel engine throttle lever opening dial (101) and the dial scale of the nuclear power emergency diesel engine throttle lever opening dial (101).

9. The method for monitoring the throttle lever opening state of a nuclear power emergency diesel engine according to claim 7, characterized in that: The method for monitoring the throttle lever opening state of a nuclear power emergency diesel engine further comprises: combining the reading of each frame of the image with the image shooting time to draw a curve of the change of the pointer opening of the throttle lever opening dial (101) of the nuclear power emergency diesel engine.

10. The method for monitoring the throttle lever opening state of a nuclear power emergency diesel engine according to claim 9, characterized in that: Whether the starting process of the nuclear power emergency diesel engine (100) is normal is judged according to the change curve of the pointer opening of the nuclear power emergency diesel engine throttle lever opening dial (101).

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