CN114005023A - Scene change identification system using vibration measurement - Google Patents
Scene change identification system using vibration measurement Download PDFInfo
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- CN114005023A CN114005023A CN202111129381.XA CN202111129381A CN114005023A CN 114005023 A CN114005023 A CN 114005023A CN 202111129381 A CN202111129381 A CN 202111129381A CN 114005023 A CN114005023 A CN 114005023A
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Abstract
The invention relates to a scene change identification system using vibration measurement, comprising: the vibration measuring mechanism is buried in a water area close to the shore, and a vibration measuring point is arranged at an underwater position close to the water surface and used for measuring the vibration amplitude of the vibration measuring point caused by the water wave fluctuation; the data analysis mechanism is connected with the vibration measurement mechanism and used for sending a ship body approaching signal when the vibration amplitude exceeds or equals to a set amplitude threshold value; the state monitoring equipment is used for sending a people number change signal when the human number of the front frame and the rear frame in the received multi-frame superposed image changes, wherein the people landing signal is sent when the human number of the front frame and the rear frame in the multi-frame superposed image decreases. The scene change identification system using vibration measurement is reliable in logic, safe and effective. Because the number of people on the same ship body can be monitored under the trigger control of the water wave vibration amplitude, the safety of personnel on each ship is ensured.
Description
Technical Field
The invention relates to the field of vibration measurement, in particular to a scene change identification system utilizing vibration measurement.
Background
Vibration measurement refers to a measurement technique that detects the amount of vibration variation, converts it into an electrical signal corresponding thereto, and facilitates display, analysis, and processing, and extracts the desired useful information therefrom. Mechanical vibration is a common physical phenomenon in engineering and daily life. The vibration has harmful side, such as destroying the normal work of the machine, shortening the service life of the machine, generating noise and the like; vibration can also be utilized, such as vibration conveying, vibration tamping, vibration crushing, vibration aging, vibration processing and the like. In order to make good use of the disadvantages, the vibration phenomenon must be measured and studied.
The modern industry puts forward the requirements of low vibration level, low noise and high vibration resistance to various high and new electromechanical products. Therefore, they must be subjected to vibration analysis, testing and vibration design. Or finding out a vibration source through vibration measurement and taking vibration reduction measures.
The mechanical vibration testing technology is one of the important contents of the modern mechanical vibration discipline and is an indispensable means for researching and solving many dynamic problems in engineering technology. For many complex mechanical systems, the dynamic characteristic parameters cannot be correctly calculated by using a theoretical formula, and vibration tests and measurements are the only solving methods.
Due to the application of electronic and computer technologies, the application of modern vibration testing techniques has exceeded the field of classical mechanical vibration, and has been applied to the detection, analysis, prediction and control of various physical phenomena, such as environmental noise monitoring, earthquake prediction and analysis, geological exploration and mineral exploration, aircraft monitoring and control, and the like.
The basic process of vibration measurement is: the sensor converts the motion of the vibrating body into an electric signal, but the output signal (voltage or current) of the sensor is too weak to be directly used as the input of a display and analysis instrument, and needs to be amplified by a signal conditioner; because the output of the sensor is an analog signal, and the modern signal analysis processor and the storage unit are both digital integrated circuits or computers, the analog signal can be processed only by converting the analog signal into a discrete digital signal by using a data acquisition device; and in order to avoid that the sampled digital signal may incorrectly reflect the original continuous signal, the signal is filtered before the continuous signal is sampled, so as to remove the high-frequency component of the signal. In addition, if the measured object is a mechanical part or structure without a vibration excitation source, the measured object needs to be excited by an exciter to generate vibration. The measured vibration signal is processed by a digital signal analyzer or a computer to obtain useful results such as a power spectrum, structural modal parameters, a frequency response function and the like.
Currently, for safety workers in a water area, due to limited hands, once the ship body in the water area is numerous and appears in a hidden position, the identification of personnel changes in the ship body is difficult to implement, for example, the behavior of swimming or catching fish under private water exists, or the phenomenon of personnel going ashore or boarding on a ship under private, and the normal and safe operation order of the ship body in the water area is seriously influenced.
Disclosure of Invention
Compared with the prior art, the invention has at least the following three prominent substantive characteristics:
(1) on the basis of a customized image processing mechanism, whether a person embarking phenomenon or a person embarking phenomenon exists is determined based on the change condition of the number of human bodies in front and back frames in the near-shore water scene image, so that an intelligent solution is provided for the personnel management and control on the pleasure boat;
(2) selecting different processing strategies based on the importance degree of different components in the red-green component, the black-white component and the yellow-blue component in the LAB color space so as to reduce the operation amount of image processing while ensuring the processing effect;
(3) adopt vibration measurement mechanism, bury underground in the waters that is close to the bank and vibration measurement point sets up the position under water near the surface of water for measure the vibration amplitude that the ripple fluctuation caused vibration measurement point, adopt data analysis mechanism simultaneously, and when vibration amplitude exceeded or equals and sets for the amplitude threshold value, send the hull and be close the signal, thereby provide triggering signal for the detection of the number change on the hull.
According to an aspect of the present invention, there is provided a scene change evaluation system using vibration measurement, the system including:
the vibration measuring mechanism is buried in a water area close to the shore, and a vibration measuring point is arranged at an underwater position close to the water surface and used for measuring the vibration amplitude of the vibration measuring point caused by the water wave fluctuation;
the data analysis mechanism is wirelessly connected with the vibration measurement mechanism and used for receiving the vibration amplitude and sending a ship body approaching signal when the vibration amplitude exceeds or equals to a set amplitude threshold value;
the miniature camera shooting mechanism is arranged on the shore, is electrically connected with the data analysis mechanism, and is used for starting to carry out camera shooting operation on a waterscape close to the shore when the ship body approaching signal is received so as to obtain multi-frame waterscape acquisition images at uniform time intervals;
the content splitting equipment is connected with the miniature camera shooting mechanism and used for executing content splitting processing on each frame of received waterscape collected image to obtain corresponding red and green sub-images, black and white sub-images and yellow and blue sub-images;
the first conversion equipment is connected with the content splitting equipment and is used for executing bilateral filtering processing, guided filtering processing and contrast improvement processing on the received black-white sub-image so as to obtain a first processed sub-image;
the second conversion equipment is connected with the content splitting equipment and is used for executing oriented filtering processing and contrast enhancement processing on the received red and green subimages so as to obtain second processed subimages;
the third conversion equipment is connected with the content splitting equipment and used for executing oriented filtering processing on the received yellow-blue sub-image to obtain a third processed sub-image;
the image superposition mechanism is respectively connected with the first conversion equipment, the second conversion equipment and the third conversion equipment and is used for superposing the first processed sub-image, the second processed sub-image and the third processed sub-image pixel by pixel to obtain a superposed processed image corresponding to each received frame of waterscape collected image;
the human body distinguishing equipment is connected with the image superposition mechanism and is used for analyzing the number of human bodies in each frame of superposed images in the multi-frame superposed images respectively corresponding to the multi-frame waterscape collected images with uniform time intervals;
the state monitoring equipment is connected with the human body distinguishing equipment and is used for sending a human number change signal when the human number of the front frame and the back frame in the multi-frame superposed image changes;
when the number of human bodies in front and back frames is reduced in the multi-frame superposition processing image, a person landing signal is sent out;
wherein, when the human body quantity of the front and back frames is reduced in the multi-frame superposition processing image, the sending of the personnel landing signal comprises: and when the number of the human bodies in the next frame of the superposed image is reduced compared with the number of the human bodies in the previous frame of the superposed image in the multi-frame superposed image, sending a personnel landing signal.
The scene change identification system using vibration measurement is reliable in logic, safe and effective. Because the number of people on the same ship body can be monitored under the trigger control of the water wave vibration amplitude, the safety of personnel on each ship is ensured.
Detailed Description
An embodiment of the scene-change-identifying system using vibration measurement of the present invention will be described in detail below.
The ship body is composed of a series of plates and a framework (called a plate frame for short). The plates and the framework are mutually connected and mutually supported. The framework is a supporting piece of the shell, so that the strength and the rigidity of the shell plate are improved, and the instability resistance of the plate is enhanced. The ship body is composed of keel, side keel, rib, fore column, stern column and other components. The actual ship structure of the ship is very complicated, and the ship structure of the ship model is simple.
The ship body is composed of components such as a deck, side plates, a bottom plate, a keel, a side keel, a keel, ribs, a fore column, a stern column and the like. The actual ship structure of the ship is very complicated, and the ship structure of the ship model is simple.
The hull processing refers to a process of manually or mechanically manufacturing the material after being numbered into hull parts meeting the requirements of patterns and processes. In order to enable the ship to bear the impact and action of various external forces on the ship body under severe weather conditions, the ship must be designed and built according to the technical requirements of the entry and construction standards of the steel seagoing vessels, and can be put into operation after being checked to be qualified by a classification society authorized by a competent organ or a designated shipper according to the human classification and construction standards of the steel seagoing vessels. The ship constructor should be skilled in the basic knowledge of ship construction and structure.
The structure of the hull determines the strength of the hull, and the strength also determines the carrying capacity of the ship. Usually, hull structures of different strengths are designed according to different carrying needs. The hull structure should have good continuity during the design process to achieve the required strength.
Currently, for safety workers in a water area, due to limited hands, once the ship body in the water area is numerous and appears in a hidden position, the identification of personnel changes in the ship body is difficult to implement, for example, the behavior of swimming or catching fish under private water exists, or the phenomenon of personnel going ashore or boarding on a ship under private, and the normal and safe operation order of the ship body in the water area is seriously influenced.
In order to overcome the defects, the invention builds a scene change identification system by using vibration measurement, and can effectively solve the corresponding technical problem.
A scene-change-identifying system using vibration measurement according to an embodiment of the present invention includes:
the vibration measuring mechanism is buried in a water area close to the shore, and a vibration measuring point is arranged at an underwater position close to the water surface and used for measuring the vibration amplitude of the vibration measuring point caused by the water wave fluctuation;
the data analysis mechanism is wirelessly connected with the vibration measurement mechanism and used for receiving the vibration amplitude and sending a ship body approaching signal when the vibration amplitude exceeds or equals to a set amplitude threshold value;
the miniature camera shooting mechanism is arranged on the shore, is electrically connected with the data analysis mechanism, and is used for starting to carry out camera shooting operation on a waterscape close to the shore when the ship body approaching signal is received so as to obtain multi-frame waterscape acquisition images at uniform time intervals;
the content splitting equipment is connected with the miniature camera shooting mechanism and used for executing content splitting processing on each frame of received waterscape collected image to obtain corresponding red and green sub-images, black and white sub-images and yellow and blue sub-images;
the first conversion equipment is connected with the content splitting equipment and is used for executing bilateral filtering processing, guided filtering processing and contrast improvement processing on the received black-white sub-image so as to obtain a first processed sub-image;
the second conversion equipment is connected with the content splitting equipment and is used for executing oriented filtering processing and contrast enhancement processing on the received red and green subimages so as to obtain second processed subimages;
the third conversion equipment is connected with the content splitting equipment and used for executing oriented filtering processing on the received yellow-blue sub-image to obtain a third processed sub-image;
the image superposition mechanism is respectively connected with the first conversion equipment, the second conversion equipment and the third conversion equipment and is used for superposing the first processed sub-image, the second processed sub-image and the third processed sub-image pixel by pixel to obtain a superposed processed image corresponding to each received frame of waterscape collected image;
the human body distinguishing equipment is connected with the image superposition mechanism and is used for analyzing the number of human bodies in each frame of superposed images in the multi-frame superposed images respectively corresponding to the multi-frame waterscape collected images with uniform time intervals;
the state monitoring equipment is connected with the human body distinguishing equipment and is used for sending a human number change signal when the human number of the front frame and the back frame in the multi-frame superposed image changes;
when the number of human bodies in front and back frames is reduced in the multi-frame superposition processing image, a person landing signal is sent out;
wherein, when the human body quantity of the front and back frames is reduced in the multi-frame superposition processing image, the sending of the personnel landing signal comprises: and when the number of the human bodies in the next frame of the superposed image is reduced compared with the number of the human bodies in the previous frame of the superposed image in the multi-frame superposed image, sending a personnel landing signal.
Next, a detailed description will be given of a specific configuration of the scene-change-identifying system using vibration measurement according to the present invention.
In the scene-change-authentication system using vibration measurement:
the step of superposing the first processed sub-image, the second processed sub-image and the third processed sub-image pixel by pixel to obtain a superposed processed image corresponding to each frame of the received waterscape captured image comprises: the resolution of the first processed sub-image, the second processed sub-image, the third processed sub-image and the overlay processed image are the same.
In the scene-change-authentication system using vibration measurement:
the step of superposing the first processed sub-image, the second processed sub-image and the third processed sub-image pixel by pixel to obtain a superposed processed image corresponding to each frame of the received waterscape captured image comprises: and superposing the three pixels at the same coordinate position in the first processing sub-image, the second processing sub-image and the third processing sub-image to obtain the pixel at the coordinate position corresponding to the superposed processing image.
In the scene-change-authentication system using vibration measurement:
and sending a person boarding signal when the number of human bodies in the front frame and the rear frame in the multi-frame superposition processing image is increased.
In the scene-change-authentication system using vibration measurement:
when the number of human bodies in the front frame and the rear frame in the multi-frame superposition processing image is increased, sending a personnel boarding signal comprises the following steps: and when the number of the human bodies in the next frame of superposed image is increased compared with the number of the human bodies in the previous frame of superposed image in the multi-frame superposed image, sending a personnel boarding signal.
In the scene-change-authentication system using vibration measurement:
the content splitting processing is executed to each frame of received waterscape collected image to obtain corresponding red and green sub-images, black and white sub-images and yellow and blue sub-images, and the content splitting processing comprises the following steps: and acquiring a red-green component, a black-white component and a yellow-blue component of each constituent pixel in each received water scene acquisition image in an LAB color space.
In the scene-change-authentication system using vibration measurement:
the content splitting processing is executed to each frame of received waterscape collected image to obtain corresponding red and green sub-images, black and white sub-images and yellow and blue sub-images, and the method further comprises the following steps: forming red and green components of each pixel in each received water scene acquisition image in an LAB color space into red and green subimages corresponding to the water scene acquisition image;
wherein, executing content splitting processing to each frame of received waterscape collected image to obtain corresponding red and green sub-images, black and white sub-images and yellow and blue sub-images further comprises: black-white components of each constituent pixel in each received water scene acquisition image in an LAB color space form a black-white sub-image corresponding to the water scene acquisition image;
wherein, executing content splitting processing to each frame of received waterscape collected image to obtain corresponding red and green sub-images, black and white sub-images and yellow and blue sub-images further comprises: and forming a yellow-blue component of each pixel in each received water scene acquisition image in an LAB color space into a yellow-blue subimage corresponding to the water scene acquisition image.
In the scene-change-authentication system using vibration measurement:
the data analysis mechanism is also used for sending a ship body far-away signal when the vibration amplitude is lower than the set amplitude threshold value.
In the scene-change-authentication system using vibration measurement:
the miniature camera shooting mechanism is also used for quitting camera shooting operation executed on a waterscape close to the shore when the signal for keeping the ship away from the ship body is received.
In addition, in the scene change evaluation system using vibration measurement, acquiring a red-green component, a black-white component, and a yellow-blue component of each constituent pixel in each received water-scene captured image in an LAB color space includes: and obtaining the value of any one of the red-green component, the black-white component and the yellow-blue component of each constituent pixel in each received water scene acquisition image in the LAB color space, wherein the value of any one of the red-green component, the black-white component and the yellow-blue component is more than 0 and less than 255.
Since many apparently widely different embodiments of the present invention can be made without departing from the spirit and scope thereof, it is to be understood that the invention is not limited to the specific embodiments thereof except as defined in the appended claims.
Claims (9)
1. A scene change identification system using vibration measurements, the system comprising:
the vibration measuring mechanism is buried in a water area close to the shore, and a vibration measuring point is arranged at an underwater position close to the water surface and used for measuring the vibration amplitude of the vibration measuring point caused by the water wave fluctuation;
the data analysis mechanism is wirelessly connected with the vibration measurement mechanism and used for receiving the vibration amplitude and sending a ship body approaching signal when the vibration amplitude exceeds or equals to a set amplitude threshold value;
the miniature camera shooting mechanism is arranged on the shore, is electrically connected with the data analysis mechanism, and is used for starting to carry out camera shooting operation on a waterscape close to the shore when the ship body approaching signal is received so as to obtain multi-frame waterscape acquisition images at uniform time intervals;
the content splitting equipment is connected with the miniature camera shooting mechanism and used for executing content splitting processing on each frame of received waterscape collected image to obtain corresponding red and green sub-images, black and white sub-images and yellow and blue sub-images;
the first conversion equipment is connected with the content splitting equipment and is used for executing bilateral filtering processing, guided filtering processing and contrast improvement processing on the received black-white sub-image so as to obtain a first processed sub-image;
the second conversion equipment is connected with the content splitting equipment and is used for executing oriented filtering processing and contrast enhancement processing on the received red and green subimages so as to obtain second processed subimages;
the third conversion equipment is connected with the content splitting equipment and used for executing oriented filtering processing on the received yellow-blue sub-image to obtain a third processed sub-image;
the image superposition mechanism is respectively connected with the first conversion equipment, the second conversion equipment and the third conversion equipment and is used for superposing the first processed sub-image, the second processed sub-image and the third processed sub-image pixel by pixel to obtain a superposed processed image corresponding to each received frame of waterscape collected image;
the human body distinguishing equipment is connected with the image superposition mechanism and is used for analyzing the number of human bodies in each frame of superposed images in the multi-frame superposed images respectively corresponding to the multi-frame waterscape collected images with uniform time intervals;
the state monitoring equipment is connected with the human body distinguishing equipment and is used for sending a human number change signal when the human number of the front frame and the back frame in the multi-frame superposed image changes;
when the number of human bodies in front and back frames is reduced in the multi-frame superposition processing image, a person landing signal is sent out;
wherein, when the human body quantity of the front and back frames is reduced in the multi-frame superposition processing image, the sending of the personnel landing signal comprises: and when the number of the human bodies in the next frame of the superposed image is reduced compared with the number of the human bodies in the previous frame of the superposed image in the multi-frame superposed image, sending a personnel landing signal.
2. The scene-change-authentication system using vibration measurement according to claim 1, characterized in that:
the step of superposing the first processed sub-image, the second processed sub-image and the third processed sub-image pixel by pixel to obtain a superposed processed image corresponding to each frame of the received waterscape captured image comprises: the resolution of the first processed sub-image, the second processed sub-image, the third processed sub-image and the overlay processed image are the same.
3. The scene-change-authentication system using vibration measurement according to claim 1, characterized in that:
the step of superposing the first processed sub-image, the second processed sub-image and the third processed sub-image pixel by pixel to obtain a superposed processed image corresponding to each frame of the received waterscape captured image comprises: and superposing the three pixels at the same coordinate position in the first processing sub-image, the second processing sub-image and the third processing sub-image to obtain the pixel at the coordinate position corresponding to the superposed processing image.
4. The scene-change-authentication system using vibration measurement according to claim 1, characterized in that:
and sending a person boarding signal when the number of human bodies in the front frame and the rear frame in the multi-frame superposition processing image is increased.
5. The scene-change-authentication system using vibration measurement according to claim 4, characterized in that:
when the number of human bodies in the front frame and the rear frame in the multi-frame superposition processing image is increased, sending a personnel boarding signal comprises the following steps: and when the number of the human bodies in the next frame of superposed image is increased compared with the number of the human bodies in the previous frame of superposed image in the multi-frame superposed image, sending a personnel boarding signal.
6. The scene-change-authentication system using vibration measurement according to claim 1, characterized in that:
the content splitting processing is executed to each frame of received waterscape collected image to obtain corresponding red and green sub-images, black and white sub-images and yellow and blue sub-images, and the content splitting processing comprises the following steps: and acquiring a red-green component, a black-white component and a yellow-blue component of each constituent pixel in each received water scene acquisition image in an LAB color space.
7. The scene-change-authentication system using vibration measurement according to claim 6, characterized in that:
the content splitting processing is executed to each frame of received waterscape collected image to obtain corresponding red and green sub-images, black and white sub-images and yellow and blue sub-images, and the method further comprises the following steps: forming red and green components of each pixel in each received water scene acquisition image in an LAB color space into red and green subimages corresponding to the water scene acquisition image;
wherein, executing content splitting processing to each frame of received waterscape collected image to obtain corresponding red and green sub-images, black and white sub-images and yellow and blue sub-images further comprises: black-white components of each constituent pixel in each received water scene acquisition image in an LAB color space form a black-white sub-image corresponding to the water scene acquisition image;
wherein, executing content splitting processing to each frame of received waterscape collected image to obtain corresponding red and green sub-images, black and white sub-images and yellow and blue sub-images further comprises: and forming a yellow-blue component of each pixel in each received water scene acquisition image in an LAB color space into a yellow-blue subimage corresponding to the water scene acquisition image.
8. The scene-change-authentication system using vibration measurement according to claim 1, characterized in that:
the data analysis mechanism is also used for sending a ship body far-away signal when the vibration amplitude is lower than the set amplitude threshold value.
9. The scene-change-authentication system using vibration measurement according to claim 8, wherein:
the miniature camera shooting mechanism is also used for quitting camera shooting operation executed on a waterscape close to the shore when the signal for keeping the ship away from the ship body is received.
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| CN202111129381.XA CN114005023A (en) | 2021-09-26 | 2021-09-26 | Scene change identification system using vibration measurement |
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| CN202111129381.XA CN114005023A (en) | 2021-09-26 | 2021-09-26 | Scene change identification system using vibration measurement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115424475A (en) * | 2022-11-07 | 2022-12-02 | 亚太卫星宽带通信（深圳）有限公司 | Device and system applied to intelligent shipping data acquisition |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115424475A (en) * | 2022-11-07 | 2022-12-02 | 亚太卫星宽带通信（深圳）有限公司 | Device and system applied to intelligent shipping data acquisition |
| CN115424475B (en) * | 2022-11-07 | 2023-01-24 | 亚太卫星宽带通信（深圳）有限公司 | Device and system applied to intelligent shipping data acquisition |
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