An air preheater cold end monitoring system and monitoring process

Abstract

The present invention discloses an air preheater cold end monitoring system and monitoring process, which is provided by arranging several probe assemblies on the middle beam of the cold end of the air preheater rotor; and arranging a rotor positioning detection device to detect the starting signal and speed information of the rotor, and the controller outputs shooting instructions according to these signals to control the probe assembly to shoot to obtain the required rotor image information; an image recognition unit is provided to receive and process the rotor image information and output it to a visual monitoring platform, and the visual monitoring platform performs a visual display of the rotor cold end according to the obtained image processing information, and can obtain an automatic warning of the cold end rotor status performance by comparing images of different cycles. Further analysis of the blockage, corrosion, open flame and wear of the heat storage element of the cold end rotor of the air preheater is carried out, so that the various status data of the cold end rotor can be interacted with the user in real time, solving the problem that the cold end of the existing air preheater cannot be monitored.

Description

Technical Field

[0001] The invention belongs to the technical field of air preheater monitoring, and in particular relates to an air preheater cold end monitoring system and a monitoring process. Background Art

[0002] Boiler equipment is one of the three main equipment in a thermal power plant. The air preheater is one of the important components of the boiler. It uses the flue gas temperature at the tail of the boiler to heat the air for boiler combustion, effectively reducing the exhaust gas temperature and improving the thermal efficiency of the boiler. Obviously, heat exchange efficiency is an important performance indicator of the air preheater. At present, most air preheaters are facing the problem of blockage. Excessive ammonia injection leads to excessive generation of ammonium bisulfate, which condenses at the cold end of the air preheater and scales on the cold end heat storage element after encountering dust, causing the air preheater to be blocked, thereby significantly reducing the heat exchange efficiency. The soot blowing system of the air preheater cannot accurately locate the blockage condition, so the soot blowing effect is not obvious. Long-term blockage also further aggravates the corrosion and component wear of the cold end heat storage element, and greatly increases the probability of fire in the cold end element.

[0003] The various performance indicators of the cold-end rotor of the air preheater, such as blockage, corrosion, and wear, directly affect the heat exchange efficiency of the air preheater. At present, most air preheaters are facing the problem of blockage. Excessive ammonia injection leads to excessive generation of ammonium bisulfate, which condenses at the cold end of the air preheater and scales on the cold-end heat storage element after encountering dust, causing the air preheater to be blocked, thereby significantly reducing the heat exchange efficiency. The soot blowing system of the air preheater cannot accurately locate the blockage condition, so the soot blowing effect is not obvious. Long-term blockage also further aggravates the corrosion and wear of the cold-end heat storage element, and greatly increases the probability of fire in the cold-end element.

[0004] The performance of the cold-end rotor cannot be directly reflected to the operation and maintenance personnel and is within the monitoring blind spot, which also poses a major safety hazard to the operation of the unit. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an air preheater cold end monitoring system and a monitoring process to solve the problem that the cold end of the existing air preheater cannot be monitored.

[0006] To solve the above problems, the technical solution of the present invention is:

[0007] An air preheater cold end monitoring system of the present invention comprises:

[0008] A plurality of probe assemblies are respectively arranged on the middle beam of the cold end of the air preheater rotor and face the rotor, and are used to collect rotor image information;

[0009] The rotor positioning detection device is located at the center tube of the cold end of the air preheater rotor and is used to detect the starting signal and speed information of the rotor;

[0010] A control unit, connected to the probe assembly and the rotor positioning detection device respectively, for receiving the starting point signal and the rotation speed information and outputting a shooting instruction to the probe assembly;

[0011] An image recognition unit, connected to the probe assembly signal, for receiving the rotor image information for processing and output;

[0012] The visual monitoring platform is connected to the image recognition unit signal and is used to receive image processing information and visually analyze the running status of the rotor.

[0013] The air preheater cold end monitoring system of the present invention, the probe assembly includes a camera, a fill light, an insert and a mounting seat; the mounting seat is installed on the middle beam of the cold end of the air preheater rotor, and the mounting seat is provided with an insertion slot; the camera and the fill light are respectively installed on the insert; the insert is inserted into the insertion slot.

[0014] In the air preheater cold end monitoring system of the present invention, the control unit is used to output and timed shooting control logic to the probe assembly; the time for the timed shooting is T, and the rotor rotates one circle, and N photos are taken according to the timed shooting time T;

[0015]

[0016]

[0017] Where k1 is the line-of-sight conversion coefficient, S is the line-of-sight distance between the probe assembly and the rotor, and V is the rotor speed;

[0018] The N photos are sequentially spliced ​​in a circle to form a circle of images collected by the probe assembly.

[0019] In the air preheater cold end monitoring system of the present invention, the probe assemblies are arranged in a single row and multiple columns evenly on one side of the middle part of the middle beam of the cold end of the air preheater rotor, so as to cover the rotor radius range; the number of the probe assemblies is X,

[0020]

[0021] Where k2 is the line of sight ratio coefficient, D is the rotor diameter, and S is the line of sight between the probe assembly and the rotor.

[0022] The air preheater cold end monitoring system of the present invention, the rotor positioning detection device includes an inductive positioning switch, an inductive sheet and a signal transmitting mechanism; the inductive sheet is installed on the rotating part of the air preheater, the inductive positioning switch corresponds to the inductive sheet and is installed on the fixed part of the air preheater; the signal transmitting mechanism is connected with the inductive positioning switch and the control unit signal, and is used to receive switch trigger information and output it to the control unit.

[0023] The air preheater cold end monitoring system of the present invention also includes a dustproof and cooling device; the dustproof and cooling device is installed on the periphery of the probe assembly and is used to clean and protect the probe assembly and cool the probe assembly.

[0024] The air preheater cold end monitoring system of the present invention, the dustproof and cooling device comprises a casing;

[0025] The shell is sleeved on the probe assembly, and the inner wall surface of the shell cooperates with the outer wall surface of the head-raising assembly to form a cooling channel; the first end of the shell is provided with an opening for the probe assembly to collect images, and a plurality of purge air paths are provided at the opening, and the output end of the purge air path faces the lens of the probe assembly; the second end of the shell is provided with an air source connector and an electrical connector connected to the cooling channel.

[0026] The air preheater cold end monitoring system of the present invention, the dustproof and cooling device also includes a dust cover and a driving mechanism;

[0027] The dust cover is arranged at the output end of the driving mechanism, and the fixed end of the driving mechanism is arranged at the fixed end of the air preheater, so as to drive the dust cover to move to the corresponding probe assembly.

[0028] In the air preheater cold end monitoring system of the present invention, the image recognition unit is used to perform image acquisition, image management, image recognition, image stitching and image analysis on the rotor image information.

[0029] An air preheater cold end monitoring process of the present invention is applied to any of the air preheater cold end monitoring systems described above, and the process is as follows:

[0030] Step S1: The rotor positioning detection device collects and outputs the rotation speed information;

[0031] Step S2: the control unit receives the rotation speed information and outputs a shooting instruction;

[0032] Step S3: the probe assembly receives the shooting instruction, collects rotor image information and outputs it;

[0033] Step S4: the image recognition unit receives the rotor image information, processes it and outputs image processing information;

[0034] Step S5: The visual monitoring platform receives and analyzes the image processing information to perform a visual display of the rotor and an early warning of the rotor operation status.

[0035] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0036] In one embodiment of the present invention, several probe assemblies are arranged on the middle beam of the cold end of the air preheater rotor; and a rotor positioning detection device is arranged to detect the starting signal and speed information of the rotor. The controller outputs shooting instructions according to these signals to control the probe assembly to shoot to obtain the required rotor image information; an image recognition unit is arranged to receive and process the rotor image information, obtain 360° full rotor image coverage, and output it to the visual monitoring platform, which performs a visual display of the cold end of the rotor according to the obtained image processing information, and can obtain automatic warning of the cold end rotor status performance through image comparison of different cycles. Further analyze the blockage, corrosion, open flame and wear of the heat storage element of the cold end rotor of the air preheater, guide the safe and efficient operation of the air preheater, and realize the real-time interaction of the cold end rotor status data with the user, so that the user can find the problem as early as possible and accurately locate the problem, so that the user can solve the problem more targeted later, improve work efficiency, and solve the problem that the cold end of the existing air preheater cannot be monitored. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the installation of the probe assembly of the air preheater cold end monitoring system of the present invention;

[0038] Figure 2 Another schematic diagram of the installation of the probe assembly of the air preheater cold end monitoring system of the present invention;

[0039] Figure 3 It is a schematic diagram of the cold end monitoring process of the air preheater of the present invention;

[0040] Figure 4 Another schematic diagram of the installation of the probe assembly of the air preheater cold end monitoring system of the present invention;

[0041] Figure 5 It is a schematic diagram of a rotor positioning detection device of an air preheater cold end monitoring system of the present invention;

[0042] Figure 6 A schematic diagram of the distribution distances between the probe components of the air preheater cold end monitoring system of the present invention;

[0043] Figure 7 A schematic diagram of a dust cover and a driving mechanism of an air preheater cold end monitoring system of the present invention;

[0044] Figure 8 It is a schematic diagram of the casing of the air preheater cold end monitoring system of the present invention.

[0045] Description of reference numerals: 1: probe assembly; 101: lens; 2: cold end middle beam; 3: air preheater; 4: clamp; 5: induction sheet; 6: induction positioning switch; 7: mounting bracket; 8: hinged base; 9: cylinder; 10: crankshaft transmission component; 11: dust cover; 12: casing; 13: cooling flow channel; 14: purge air path; 15: air source connector; 16: electrical connector; DETAILED DESCRIPTION

[0046] The following is a further detailed description of an air preheater cold end monitoring system and monitoring process proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims.

[0047] See also Figure 1 , Figure 2 and Figure 4 In one embodiment, an air preheater cold end monitoring system includes a plurality of probe assemblies 1, a rotor positioning detection device, a control unit, an image recognition unit and a visual monitoring platform.

[0048] Among them, several probe assemblies 1 are respectively arranged on the middle beam 2 of the cold end of the rotor of the air preheater 3 and face the rotor, so as to cooperate in collecting all image information of the rotor on the radius. The rotor positioning detection device is arranged at the center tube position of the cold end of the rotor of the air preheater 3, so as to detect the starting signal and speed information of the rotor.

[0049] The control unit is connected to the probe assembly 1 and the rotor positioning detection device by signal, and is used to receive the starting point signal and the speed information and output the shooting instruction to the probe assembly 1. The image recognition unit is connected to the probe assembly 1 by signal, and is used to receive the rotor image information for processing and output. The visual monitoring platform is connected to the image recognition unit by signal, and is used to receive the image processing information and visually analyze the running status of the rotor.

[0050] In this embodiment, several probe assemblies 1 are arranged on the middle beam 2 of the cold end of the rotor of the air preheater 3; and a rotor positioning detection device is arranged to detect the starting signal and speed information of the rotor. The controller outputs shooting instructions according to these signals to control the probe assembly 1 to perform timed directional shooting to obtain the required rotor image information; an image recognition unit is arranged to receive and process the rotor image information, obtain 360° full rotor image coverage, and output it to the visual monitoring platform, which performs a visual display of the cold end of the rotor according to the obtained image processing information, and can obtain automatic warning of the cold end rotor status performance through image comparison of different cycles. Further analyze the blockage, corrosion, open flame and wear of the heat storage element of the cold end rotor of the air preheater 3, guide the safe and efficient operation of the air preheater 3, and realize the real-time interaction of the cold end rotor status data with the user, so that the user can find the problem as early as possible and accurately locate the problem, so that the user can solve the problem more targetedly in the future, improve work efficiency, and solve the problem that the cold end of the existing air preheater 3 cannot be monitored.

[0051] The ash blockage of the heat exchange element in the air preheater 3 can be monitored online, and the resistance state and trend of the air preheater 3 can be visualized in real time, which can greatly improve the user's ability to adjust the air preheater 3 soot blowing in time, understand the real-time blockage status of the air preheater 3, and evaluate whether the heat transfer efficiency of the air preheater 3 has deteriorated. This embodiment can visualize the internal structure of the air preheater 3, provide guidance to the operation and maintenance personnel in operation, and purchase maintenance spare parts in advance in a timely manner, provide a more targeted solution for maintenance, save maintenance time, and avoid the occurrence of downtime events caused by controllable faults, saving operating costs.

[0052] The specific structure of the air preheater cold end monitoring system of this embodiment is further described below:

[0053] In this embodiment, the probe assembly 1 includes a camera, a fill light, an insert and a mounting seat. The mounting seat is mounted on the middle beam of the cold end of the rotor of the air preheater 3, and an insertion slot is provided on the mounting seat. The camera and the fill light are respectively mounted on the insert. The insert and the insertion slot are a single-piece insertion design, and the connection can be completed by inserting the insert into the insertion slot. Among them, the camera can be a high-speed camera.

[0054] The control unit can be a PLC controller, which is used to convert the collected starting point signal and speed information into shooting instruction output and timing shooting control logic to the probe assembly 1, and control the camera to take timed shots. The time for the timed shooting is T, and the rotor rotates one circle, and N photos are taken according to the timed shooting time T.

[0055]

[0056]

[0057] Wherein, k1 is the line of sight conversion coefficient, S is the line of sight between the probe assembly 1 and the rotor, and V is the rotor speed.

[0058] The N photos are sequentially spliced ​​in a circle to form a circle of images collected by the probe assembly 1 .

[0059] See also Figure 6 In order to further obtain the full rotor coverage circumferential image, the probe assembly 1 is radially installed, and a single-row and multi-row camera arrangement is adopted. The number of single-row cameras X is calculated according to the diameter D of the air preheater 3; the single-row and multi-row probe assembly 1 is evenly distributed on one side of the middle part of the middle beam 2 of the cold end of the air preheater 3 rotor, that is, on the same side of the center point of the middle beam. The multiple cameras are reasonably arranged so that the irradiation angle covers the radius range of the cold end rotor, achieving full coverage without blind spots, thereby achieving full coverage of the radius of one side of the rotor. The number of probe assemblies 1 is X,

[0060]

[0061] Wherein, k2 is the line of sight proportional coefficient, D is the rotor diameter, and S is the line of sight between the probe assembly 1 and the rotor.

[0062] The image recognition unit is an image recognition system, which is used for image acquisition, image management, image recognition, image stitching and image analysis of rotor image information. Thus, the image of the entire rotor within the rotation cycle can be obtained, and the blockage, corrosion, wear and tear of the rotor can be detected based on the comparative analysis of the rotor images of adjacent cycles. The visual monitoring system visualizes the entire air preheater 3 at the cold end, and compares images of different cycles to obtain an automatic warning of the cold end rotor status performance. Further analysis of the blockage, corrosion, open flame and wear of the heat storage element of the cold end rotor of the air preheater 3 guides the safe and efficient operation of the air preheater 3.

[0063] The image recognition system software also sets up an angular velocity input interface for the air preheater 3 and a fixed input rule for the design segmentation angle. The image is cut and spliced ​​using the input data and rules. The angular velocity is calculated by the controller. At the same time, a ModbusRTU interface is set up to transmit the processed image to the software system of the visualization monitoring platform. The visualization monitoring platform analyzes and calculates the color distribution and saturation through algorithms, automatically generates the performance index of the cold end air preheater 3, and realizes automatic warning.

[0064] It should be noted that all software, hardware and systems involved in the visual monitoring platform use mainstream technology, adopt international standards, and do not use private or closed protocols. It can not only store, identify, and splice data images, but also automatically analyze whether the various performance indicators of the rotor are in the best condition.

[0065] In this embodiment, a control cabinet may be provided, in which the above-mentioned controller, image recognition system and visual monitoring platform are provided, and cables are laid to establish a communication connection with the probe assembly 1 .

[0066] See also Figure 5 In this embodiment, the rotor positioning detection device includes a clamp 4, an inductive positioning switch 6, an inductive sheet 5 and a signal transmitting mechanism. The inductive sheet 5 is mounted on the cold end support bearing of the air preheater 3 through the clamp 4, and the inductive positioning switch 6 corresponds to the inductive sheet 5 and is mounted on the fixed component of the air preheater 3 through a fixed bracket 7. The signal transmitting mechanism is connected to the inductive positioning switch 6 and the control unit signal, and is used to receive the switch trigger information and output it to the control unit. That is, the air preheater 3 triggers the inductive positioning switch 6 once for each rotation, and is also used to accurately locate the starting position of the camera shooting. The fixed-point instruction detects the rotor starting point positioning device through the controller to realize the starting point positioning tracking of the air preheater 3.

[0067] See also Figure 7 and Figure 8 In this embodiment, the air preheater cold end monitoring system further includes a dustproof and cooling device. The dustproof and cooling device is installed around the probe assembly 1 and is used to clean and protect the probe assembly 1 and cool the probe assembly 1.

[0068] The dustproof and cooling device includes a casing 12, a dust cover 11, and a driving mechanism. The casing 12 is sleeved on the probe assembly 1, and the inner wall surface of the casing 12 cooperates with the outer wall surface of the head assembly to form a cooling channel 13. The first end of the casing 12 is provided with an opening for the probe assembly 1 to collect images, and a plurality of purge air paths 14 are provided at the opening, and the output end of the purge air path 14 faces the lens 101 of the probe assembly 1. The second end of the casing 12 is provided with an air source connector 15 and an electrical connector 16 connected to the cooling channel 13. The electrical connector 16 can realize the electrical connection of components such as the camera, and the air source connector 15 can be connected to an external air source. The airflow enters the cooling channel 13 to cool the camera and other components, and then is ejected from the purge air path 14 to realize the purging of the lens 101.

[0069] The dust cover 11 is arranged at the output end of the driving mechanism, and the fixed end of the driving mechanism is arranged at the fixed end of the air preheater 3, which is used to drive the dust cover 11 to move to the corresponding probe assembly 1. The driving mechanism may specifically include a hinged base 8, a cylinder 9 and a crankshaft transmission component 10 connected in sequence, and the dust cover 11 is installed at the output end of the crankshaft transmission component 10, driving the dust cover 11 to move back and forth at the lens 101 of the probe assembly 1. When the preheater is cleaning, the cylinder 9 can be controlled by turning on and off the gas source to drive the crankshaft transmission component 10 to rotate and drive the dust cover to move, thereby achieving the purpose of covering the cooling and purge device of the lens 101, and preventing the ash and water mixture dropped in the furnace from falling on the surface of the lens 101 when the air preheater 3 is cleaned.

[0070] Embodiment 2

[0071] See also Figure 3 , an air preheater cold end monitoring process, applied to the air preheater cold end monitoring system in the above-mentioned embodiment 1, by installing a high-speed camera at the secondary air inlet of the cold end of the air preheater 3 to take the air preheater 3 rotor image at a fixed point and time, and the image recognition system divides the collected image into sectors and rotates it, and finally splices it into a complete circle, and visualizes it through a visual monitoring platform, and judges the performance index of the air preheater 3 cold end rotor, automatically analyzes and warns, the specific process is as follows:

[0072] 1. Before focusing the camera, confirm the cold end installation position, lighting, and visible area when the unit is shut down;

[0073] 2. Open a mounting hole on the cold end middle beam 2, weld the mounting seat of the probe assembly 1 and install the plug-in probe assembly 1;

[0074] 3. Install dustproof and cooling devices on the probe assembly 1;

[0075] 4. Install a control cabinet, which contains a controller, an image recognition system and a visual monitoring platform, and lay cables to establish a communication connection with the probe assembly 1;

[0076] 5. Install a rotor positioning detection device on the cold end support bearing of the air preheater 3 to execute the shooting instruction at a fixed point and time;

[0077] 6. The image recognition system processes, splices and compares the images;

[0078] 7. Visual monitoring platform for visual display and automatic analysis and early warning;

[0079] 8. The visual monitoring platform compares images of different periods to obtain early warning of the cold-end rotor status and performance status, and further analyzes the blockage, corrosion, open flame and wear of the heat storage element of the cold-end rotor of the air preheater 3, so as to guide the safe and efficient operation of the air preheater 3.

[0080] The controller detects the rotor starting signal and issues a timing and directional shooting instruction. The image management and recognition system performs image acquisition and processing, and automatically stitches the cold-end rotor of the air preheater 3 according to the set cycle to achieve 360° full rotor image coverage. The ash blockage of the heat exchange element in the air preheater 3 is monitored online, and the resistance state and trend of the air preheater 3 are visualized in real time. It is very helpful for users to adjust the ash blowing of the air preheater 3 in time, understand the real-time blocking status of the air preheater 3, and evaluate whether the heat transfer efficiency of the air preheater 3 has deteriorated. Through this embodiment, the internal structure of the air preheater 3 can be visualized, which will provide guidance to the operation and maintenance personnel in operation and timely purchase of maintenance spare parts in advance. It also provides a more targeted solution for maintenance and saves maintenance time. It can also avoid the occurrence of downtime events caused by controllable faults and save operating costs.

[0081] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. An air preheater cold end monitoring device, characterized in that: include: A plurality of probe assemblies are respectively arranged on the middle beam of the cold end of the air preheater rotor and face the rotor, and are used to collect rotor image information; The rotor positioning detection device is located at the center tube of the cold end of the air preheater rotor and is used to detect the starting signal and speed information of the rotor; A control unit, connected to the probe assembly and the rotor positioning detection device respectively, for receiving the starting point signal and the rotation speed information and outputting a shooting instruction to the probe assembly; An image recognition unit, connected to the probe assembly signal, for receiving the rotor image information for processing and output; A visual monitoring platform, connected to the image recognition unit signal, for receiving image processing information and visually analyzing the running status of the rotor; It also includes a dustproof and cooling device; the dustproof and cooling device is installed on the periphery of the probe assembly and is used to clean and protect the probe assembly and cool the probe assembly; The dustproof and cooling device comprises a casing; The casing is sleeved on the probe assembly, and the inner wall surface of the casing cooperates with the outer wall surface of the probe assembly to form a cooling channel; the first end of the casing is provided with an opening for the probe assembly to collect images, and the opening is provided with a plurality of purge air paths, and the output end of the purge air path faces the lens of the probe assembly; the second end of the casing is provided with an air source connector and an electrical connector communicated with the cooling channel; The dustproof and cooling device also includes a dust cover and a driving mechanism; The dust cover is arranged at the output end of the driving mechanism, and the fixed end of the driving mechanism is arranged at the fixed end of the air preheater, so as to drive the dust cover to move to the corresponding probe assembly; The control unit is used to output the timed shooting control logic to the probe assembly; the time of the timed shooting is T, the rotor rotates one circle, and N photos are taken according to the timed shooting time T; in, is the viewing distance conversion factor, is the line of sight between the probe assembly and the rotor, V is the rotor speed; N photos are sequentially spliced ​​in a circle to form a circle of images collected by the probe assembly; The probe assemblies are evenly distributed in a single row and multiple columns on one side of the middle part of the middle beam at the cold end of the air preheater rotor, so as to cover the radius range of the rotor; the number of the probe assemblies is X, in, is the viewing distance scale factor, is the rotor diameter, is the line of sight between the probe assembly and the rotor.

2. The air preheater cold end monitoring device according to claim 1, characterized in that: The probe assembly includes a camera, a fill light, an insert and a mounting seat; the mounting seat is installed on the middle beam of the cold end of the air preheater rotor, and an insertion slot is provided on the mounting seat; the camera and the fill light are respectively installed on the insert; the insert is inserted into the insertion slot.

3. The air preheater cold end monitoring device according to claim 1, characterized in that: The rotor positioning detection device includes an inductive positioning switch, an inductive sheet and a signal transmitting mechanism; the inductive sheet is installed on the rotating part of the air preheater, and the inductive positioning switch corresponds to the inductive sheet and is installed on the fixed part of the air preheater; the signal transmitting mechanism is connected to the inductive positioning switch and the control unit signal, and is used to receive switch trigger information and output it to the control unit.

4. The air preheater cold end monitoring device according to claim 1, characterized in that: The image recognition unit is used for performing image acquisition, image management, image recognition, image stitching and image analysis on the rotor image information.

5. An air preheater cold end monitoring process, characterized in that: Applied to the air preheater cold end monitoring device as described in any one of claims 1 to 4, the process is as follows: Step S1: The rotor positioning detection device collects and outputs the rotation speed information; Step S2: the control unit receives the rotation speed information and outputs a shooting instruction; Step S3: the probe assembly receives the shooting instruction, collects rotor image information and outputs it; Step S4: the image recognition unit receives the rotor image information, processes it and outputs image processing information; Step S5: The visual monitoring platform receives and analyzes the image processing information to perform a visual display of the rotor and an early warning of the rotor operation status.

Images