CN111086604A - Coal carrying ship - Google Patents
Coal carrying ship Download PDFInfo
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- CN111086604A CN111086604A CN201911079132.7A CN201911079132A CN111086604A CN 111086604 A CN111086604 A CN 111086604A CN 201911079132 A CN201911079132 A CN 201911079132A CN 111086604 A CN111086604 A CN 111086604A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B25/00—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby
- B63B25/02—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods
- B63B25/04—Load-accommodating arrangements, e.g. stowing, trimming; Vessels characterised thereby for bulk goods solid
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
Abstract
The invention provides a coal-carrying vessel, comprising: the ship comprises a ship body, wherein a cab is arranged at the front end of the ship body, a coal cabin is arranged on the ship body, spraying pipes are arranged on two sides of the coal cabin, and a plurality of spraying ports are formed in the spraying pipes at equal intervals. The spraying pipe of the coal carrier is provided with the spraying port, so that the coal mine on the coal cabin can be regularly sprayed with water and cooled, the safety of the coal carrier is improved, the coal carrier can carry out long-time coal carrying operation, and the spontaneous combustion phenomenon caused by heating is avoided.
Description
Technical Field
The invention relates to a transport ship, in particular to a coal transport ship.
Background
Transport vessels are used to transport passengers and cargo, also known as commercial ships. As a transport means, ships have advantages of large carrying capacity and low operation cost compared with other transport means. With the development of the world economy, modern transport vessels have formed a huge fleet of vessels of a wide variety, technically complex and highly specialized. The development of transport ships approximately goes through three stages of boat rafts, wooden sailing ships (see sailing ships) and steam engine ships, and is now in the steel ship era (see the development history of transport ships) with basic power of diesel engines. As early as the prehistoric period, mankind has utilized boat rafts as water transportation vehicles. In the long history from ancient egypt times to the beginning of the 19 th century, wooden sailboats have been the primary means of water transport. After the invention of the steam engine, the transport ship enters a new period using the steam engine as power in the early 19 th century, and the shipbuilding materials are gradually replaced by iron. Early steam-powered vessels were propelled by large paddle wheels mounted on both sides, so that the vessels were generally referred to as ships in china. After the middle of the 19 th century, paddle wheels are gradually replaced by propellers, shipbuilding materials are also developed from iron to steel, and the tonnage of ships is continuously increased. At the end of the 19 th century, steam turbines and diesel engines became available in succession, providing new power for ships. After world war ii, diesel engine power has become dominant. Almost all transport vessels are now powered by diesel engines.
The coal carrier is one of transport ships, also called as coal carrier, is a bulk carrier specially used for carrying bulk coal, and is a one-way transport ship. The coal cabins of some existing coal carriers are open-air, so that coal mines are easy to heat in long-time exposure transportation, and serious and even spontaneous combustion can occur.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the technical problem of providing a coal carrier which is provided with spray pipes and spray ports on two sides of a coal bunker and can regularly spray water on the top of a coal mine to reduce the temperature.
(II) technical scheme
In order to solve the above technical problems, the present invention provides a coal carrier, comprising: the ship comprises a ship body, wherein a cab is arranged at the front end of the ship body, a coal cabin is arranged on the ship body, spraying pipes are arranged on two sides of the coal cabin, and a plurality of spraying ports are formed in the spraying pipes at equal intervals. The coal carrier is provided with the spraying openings on the spraying pipes, so that the coal mine on the coal cabin can be subjected to regular water spraying and cooling treatment, the safety of the coal carrier is improved, the coal carrier can carry out long-time coal conveying operation, and the phenomenon of spontaneous combustion caused by heating is avoided.
The coal transporting ship belongs to a large-sized transport ship, steering adjustment is difficult in the running process, the coal transporting ship is easy to collide with other ships or obstacles, and the existing coal transporting ships do not have the function of lateral ship distance detection and warning and have insufficient self-protection capability. Therefore, this technical scheme fortune coal ship still includes:
the side cameras are arranged on two sides of the ship body and used for horizontally shooting images of the side environment of the coal carrier to obtain and output instant side images;
the self-adaptive processing equipment is connected with the side camera and used for receiving the instant side image output by the side camera, measuring the contrast of the instant side image to obtain corresponding real-time contrast, and uniformly partitioning the instant side image based on the real-time contrast to obtain a plurality of corresponding sub-images;
the driving control device is connected with the adaptive processing device and used for receiving the plurality of sub-images and executing the following processing for each sub-image: acquiring brightness component values of all pixel points of the subimages, adding the brightness component values of all pixel points of the subimages, taking the added result as the brightness parameters of the subimages, sending a zooming driving signal when all the brightness parameters of all the subimages fall within a preset parameter threshold range, and sending a driving ending signal when the brightness parameters in all the brightness parameters of all the subimages fall outside the preset parameter threshold range; the preset parameter threshold range consists of a preset parameter upper threshold and a preset parameter lower threshold, and the preset parameter upper threshold is smaller than the preset parameter lower threshold;
the integral analysis equipment is connected with the side camera and is used for receiving the instant side image and determining an integral segmentation threshold corresponding to the instant side image based on the distribution condition of pixel values of all pixel points in the instant side image;
the contrast analysis equipment is used for receiving the instant lateral image and carrying out contrast analysis on the instant lateral image so as to obtain and output corresponding contrast;
the self-adaptive processing device is connected with the contrast analysis device and used for receiving the contrast and carrying out image segmentation processing on the instant lateral image based on the contrast so as to obtain a plurality of sub-images, wherein the higher the contrast is, the more the number of the obtained sub-images is;
the area analysis equipment is connected with the self-adaptive processing equipment and used for receiving the plurality of sub-images, determining area segmentation thresholds corresponding to the sub-images based on the distribution condition of pixel values of all pixel points in each sub-image and outputting all area segmentation thresholds corresponding to all the sub-images;
the region correction device is respectively connected with the region analysis device and the whole analysis device, and is used for receiving the whole segmentation threshold and each region segmentation threshold, carrying out numerical value adjustment on each region segmentation threshold based on the whole segmentation threshold, and obtaining the adjusted region segmentation threshold to be used as a region adjustment threshold to be output;
the partitioning and dividing equipment is connected with the area correction equipment and is used for partitioning each sub-image by adopting a corresponding area adjustment threshold value so as to obtain a corresponding target sub-image, and combining all the target sub-images so as to obtain and output a target image to be processed;
the self-adaptive high-frequency analysis equipment is connected with the block segmentation equipment and used for receiving the target image to be processed, carrying out contrast measurement on the target image to be processed so as to obtain real-time contrast corresponding to the target image to be processed, and determining a corresponding high-frequency distribution frequency band in the target image to be processed based on the real-time contrast so as to output the high-frequency distribution frequency band as a target frequency band;
the image differentiation equipment is respectively connected with the frequency band extraction equipment and the contrast measurement equipment and is used for receiving the target frequency band and the target image to be processed, executing high-pass filtering processing based on the target frequency band on the target image to be processed so as to obtain a corresponding high-pass filtering image and outputting the high-pass filtering image;
the difference value acquisition equipment is connected with the image differentiation equipment and is used for acquiring the target image to be processed and the high-pass filtering image, and is also used for subtracting the high-pass filtering image from the target image to be processed pixel by pixel to acquire a corresponding difference value processing image and outputting the difference value processing image;
the targeted processing device is respectively connected with the difference value acquisition device and the image differentiation device, and is used for receiving the high-pass filtering image and the difference value processing image, performing feature enhancement processing on the high-pass filtering image to obtain and output a corresponding feature enhanced image, and adding the feature enhanced image and the difference value processing image pixel by pixel to obtain a corresponding reconstructed image and outputting the reconstructed image;
the detection alarm mechanism is connected with the targeted processing equipment and is used for receiving the reconstructed image, measuring each depth of field of each ship (or obstacle) in the reconstructed image, taking the nearest depth of field in each depth of field as an alarm parameter, sending ship (or obstacle) over-close information when the alarm parameter is less than a limited amount, and sending ship distance normal information when the alarm parameter is more than or equal to the limited amount;
and the central control display screen is arranged in the cab, is respectively connected with the detection alarm mechanism and the side camera, and is used for receiving and displaying the instant side image when receiving the information that the ship (or the obstacle) is too close.
Further, the side camera comprises an optical lens and a zooming motor, and the optical lens is positioned on an imaging light path of the side camera; the zooming motor is respectively connected with the optical lens and the driving control equipment and used for realizing the movement control of the optical lens when receiving the zooming driving signal so as to correspondingly change the imaging focal length of the side camera.
Further, the zoom motor is further configured to interrupt the movement control of the optical lens when receiving the driving end signal, so as to keep the imaging focal length of the side camera unchanged.
Further, in the region correction device, the numerically adjusting each region division threshold value based on the overall division threshold value includes: and adjusting the value of the region segmentation threshold value based on the difference value from the integral segmentation threshold value to each region segmentation threshold value.
Further, in the region correction apparatus, the numerically adjusting the region division threshold value based on the magnitude of the difference from the overall division threshold value to each of the region division threshold values includes: the adjusted region segmentation threshold is the sum of the region segmentation threshold and one fourth of the difference.
Further, the central control display screen is also used for stopping receiving and displaying the instant lateral image when the ship distance normal information is received.
(III) advantageous effects
The spray ports on the spray pipes of the coal carrier can carry out regular water spraying and cooling treatment on coal mines on the coal cabins, so that the safety of the coal carrier is improved, the coal carrier can carry out long-time coal carrying operation, and the spontaneous combustion phenomenon caused by heating is avoided.
Drawings
FIG. 1 is a schematic structural view of a coal-carrying vessel according to the present invention;
wherein: 1 is a ship body, 2 is a cab, 3 is a coal cabin, 4 is a spray pipe, and 5 is a spray opening.
Detailed Description
Referring to fig. 1, the present invention provides a coal carrier, comprising: the ship body 1, 1 front end of ship body is provided with driver's cabin 2, be provided with coal bunker 3 on the ship body 1, the both sides of coal bunker 3 are provided with shower 4, equidistant a plurality of mouths 5 that spray that are provided with on shower 4. The spraying ports on the spraying pipes of the coal carrier can regularly spray water to cool coal mines in the coal cabins, so that the safety of the coal carrier is improved, the coal carrier can carry out long-time coal carrying operation, and the phenomenon of spontaneous combustion caused by heating is avoided.
The coal transporting ship belongs to a large-sized transport ship, steering adjustment is difficult in the running process, the coal transporting ship is easy to collide with other ships or obstacles, and the existing coal transporting ships do not have the function of lateral ship distance detection and warning and have insufficient self-protection capability. Therefore, the coal carrier of this embodiment further includes:
the side cameras are arranged on two sides of the ship body 1 and used for horizontally shooting images of the side environment of the coal carrier to obtain and output instant side images;
the self-adaptive processing equipment is connected with the side camera and used for receiving the instant side image output by the side camera, measuring the contrast of the instant side image to obtain corresponding real-time contrast, and uniformly partitioning the instant side image based on the real-time contrast to obtain a plurality of corresponding sub-images;
the driving control device is connected with the adaptive processing device and used for receiving the plurality of sub-images and executing the following processing for each sub-image: acquiring brightness component values of all pixel points of the subimages, adding the brightness component values of all pixel points of the subimages, taking the added result as the brightness parameters of the subimages, sending a zooming driving signal when all the brightness parameters of all the subimages fall within a preset parameter threshold range, and sending a driving ending signal when the brightness parameters in all the brightness parameters of all the subimages fall outside the preset parameter threshold range; the preset parameter threshold range consists of a preset parameter upper threshold and a preset parameter lower threshold, and the preset parameter upper threshold is smaller than the preset parameter lower threshold;
the integral analysis equipment is connected with the side camera and is used for receiving the instant side image and determining an integral segmentation threshold corresponding to the instant side image based on the distribution condition of pixel values of all pixel points in the instant side image;
the contrast analysis equipment is used for receiving the instant lateral image and carrying out contrast analysis on the instant lateral image so as to obtain and output corresponding contrast;
the self-adaptive processing device is connected with the contrast analysis device and used for receiving the contrast and carrying out image segmentation processing on the instant lateral image based on the contrast so as to obtain a plurality of sub-images, wherein the higher the contrast is, the more the number of the obtained sub-images is;
the area analysis equipment is connected with the self-adaptive processing equipment and used for receiving the plurality of sub-images, determining area segmentation thresholds corresponding to the sub-images based on the distribution condition of pixel values of all pixel points in each sub-image and outputting all area segmentation thresholds corresponding to all the sub-images;
the region correction device is respectively connected with the region analysis device and the whole analysis device, and is used for receiving the whole segmentation threshold and each region segmentation threshold, carrying out numerical value adjustment on each region segmentation threshold based on the whole segmentation threshold, and obtaining the adjusted region segmentation threshold to be used as a region adjustment threshold to be output;
the partitioning and dividing equipment is connected with the area correction equipment and is used for partitioning each sub-image by adopting a corresponding area adjustment threshold value so as to obtain a corresponding target sub-image, and combining all the target sub-images so as to obtain and output a target image to be processed;
the self-adaptive high-frequency analysis equipment is connected with the block segmentation equipment and used for receiving the target image to be processed, carrying out contrast measurement on the target image to be processed so as to obtain real-time contrast corresponding to the target image to be processed, and determining a corresponding high-frequency distribution frequency band in the target image to be processed based on the real-time contrast so as to output the high-frequency distribution frequency band as a target frequency band;
the image differentiation equipment is respectively connected with the frequency band extraction equipment and the contrast measurement equipment and is used for receiving the target frequency band and the target image to be processed, executing high-pass filtering processing based on the target frequency band on the target image to be processed so as to obtain a corresponding high-pass filtering image and outputting the high-pass filtering image;
the difference value acquisition equipment is connected with the image differentiation equipment and is used for acquiring the target image to be processed and the high-pass filtering image, and is also used for subtracting the high-pass filtering image from the target image to be processed pixel by pixel to acquire a corresponding difference value processing image and outputting the difference value processing image;
the targeted processing device is respectively connected with the difference value acquisition device and the image differentiation device, and is used for receiving the high-pass filtering image and the difference value processing image, performing feature enhancement processing on the high-pass filtering image to obtain and output a corresponding feature enhanced image, and adding the feature enhanced image and the difference value processing image pixel by pixel to obtain a corresponding reconstructed image and outputting the reconstructed image;
the detection alarm mechanism is connected with the targeted processing equipment and is used for receiving the reconstructed image, measuring each depth of field of each ship (or obstacle) in the reconstructed image, taking the nearest depth of field in each depth of field as an alarm parameter, sending ship (or obstacle) over-close information when the alarm parameter is less than a limited amount, and sending ship distance normal information when the alarm parameter is more than or equal to the limited amount;
and the central control display screen is arranged in the cab 2, is respectively connected with the detection alarm mechanism and the side camera, and is used for receiving and displaying the instant side image when receiving the information that the ship (or the obstacle) is too close.
The side camera comprises an optical lens and a zooming motor, and the optical lens is positioned on an imaging light path of the side camera; the zooming motor is respectively connected with the optical lens and the driving control equipment and used for realizing the movement control of the optical lens when receiving the zooming driving signal so as to correspondingly change the imaging focal length of the side camera.
The zoom motor is further used for interrupting the movement control of the optical lens when the driving end signal is received so as to keep the imaging focal length of the side camera unchanged.
In the region correction device, numerically adjusting each region division threshold value based on the overall division threshold value includes: and adjusting the value of the region segmentation threshold value based on the difference value from the integral segmentation threshold value to each region segmentation threshold value.
In the region correction apparatus, the numerically adjusting the region division threshold value based on the magnitude of the difference from the overall division threshold value to each region division threshold value includes: the adjusted region segmentation threshold is the sum of the region segmentation threshold and one fourth of the difference.
And the central control display screen is also used for stopping receiving and displaying the instant lateral image when the normal ship distance information is received.
The coal carrier has a side ship distance detection alarm function, and aims at the technical problems that the coal carrier does not have the side ship distance detection alarm function and is insufficient in self-protection capability in the prior art, the depth of field of each ship (or obstacle) in an image of the side of the coal carrier is measured, and the nearest depth of field in each depth of field is used as an alarm parameter, so that a driver in a cab is reminded to pay attention to the side when the side ship distance is too close; determining a driving signal of a zooming motor of the side camera through contrast analysis and brightness analysis of an imaging result of the side camera so as to realize automatic zooming processing of the side camera; a self-adaptive image sharpening processing mode is adopted, so that the image sharpening effect is ensured; an adaptive adjustment mode for adjusting the block threshold based on the integral threshold is established, so that the target detection gives consideration to the integral characteristics and the characteristics, and the effectiveness of the target image to be processed for subsequent image processing is ensured, thereby solving the technical problems.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A coal tanker, comprising: the ship body (1), hull (1) front end is provided with driver's cabin (2), be provided with coal bunker (3) on hull (1), the both sides of coal bunker (3) are provided with shower (4), equidistant a plurality of mouths (5) that spray that are provided with on shower (4).
2. The coal tanker according to claim 1, further comprising:
the side cameras are arranged on two sides of the ship body (1) and used for horizontally shooting images of the side environment of the coal carrier to obtain and output instant side images;
the self-adaptive processing equipment is connected with the side camera and used for receiving the instant side image output by the side camera, measuring the contrast of the instant side image to obtain corresponding real-time contrast, and uniformly partitioning the instant side image based on the real-time contrast to obtain a plurality of corresponding sub-images;
the driving control device is connected with the adaptive processing device and used for receiving the plurality of sub-images and executing the following processing for each sub-image: acquiring brightness component values of all pixel points of the subimages, adding the brightness component values of all pixel points of the subimages, taking the added result as the brightness parameters of the subimages, sending a zooming driving signal when all the brightness parameters of all the subimages fall within a preset parameter threshold range, and sending a driving ending signal when the brightness parameters in all the brightness parameters of all the subimages fall outside the preset parameter threshold range; the preset parameter threshold range consists of a preset parameter upper threshold and a preset parameter lower threshold, and the preset parameter upper threshold is smaller than the preset parameter lower threshold;
and the integral analysis equipment is connected with the side camera and is used for receiving the instant side image and determining an integral segmentation threshold corresponding to the instant side image based on the distribution condition of the pixel values of all pixel points in the instant side image.
3. The coal tanker according to claim 2, further comprising:
the contrast analysis equipment is used for receiving the instant lateral image and carrying out contrast analysis on the instant lateral image so as to obtain and output corresponding contrast;
the self-adaptive processing device is connected with the contrast analysis device and used for receiving the contrast and carrying out image segmentation processing on the instant lateral image based on the contrast so as to obtain a plurality of sub-images, wherein the higher the contrast is, the more the number of the obtained sub-images is;
the area analysis equipment is connected with the self-adaptive processing equipment and used for receiving the plurality of sub-images, determining area segmentation thresholds corresponding to the sub-images based on the distribution condition of pixel values of all pixel points in each sub-image and outputting all area segmentation thresholds corresponding to all the sub-images;
the region correction device is respectively connected with the region analysis device and the whole analysis device, and is used for receiving the whole segmentation threshold and each region segmentation threshold, carrying out numerical value adjustment on each region segmentation threshold based on the whole segmentation threshold, and obtaining the adjusted region segmentation threshold to be used as a region adjustment threshold to be output;
the partitioning and dividing equipment is connected with the area correction equipment and is used for partitioning each sub-image by adopting a corresponding area adjustment threshold value so as to obtain a corresponding target sub-image, and combining all the target sub-images so as to obtain and output a target image to be processed;
the self-adaptive high-frequency analysis equipment is connected with the block segmentation equipment and used for receiving the target image to be processed, carrying out contrast measurement on the target image to be processed so as to obtain real-time contrast corresponding to the target image to be processed, and determining a corresponding high-frequency distribution frequency band in the target image to be processed based on the real-time contrast so as to output the high-frequency distribution frequency band as a target frequency band;
and the image differentiation equipment is respectively connected with the frequency band extraction equipment and the contrast measurement equipment and is used for receiving the target frequency band and the target image to be processed, executing high-pass filtering processing based on the target frequency band on the target image to be processed so as to obtain a corresponding high-pass filtering image and outputting the high-pass filtering image.
4. The coal tanker according to claim 3, further comprising:
the difference value acquisition equipment is connected with the image differentiation equipment and is used for acquiring the target image to be processed and the high-pass filtering image, and is also used for subtracting the high-pass filtering image from the target image to be processed pixel by pixel to acquire a corresponding difference value processing image and outputting the difference value processing image;
the targeted processing device is respectively connected with the difference value acquisition device and the image differentiation device, and is used for receiving the high-pass filtering image and the difference value processing image, performing feature enhancement processing on the high-pass filtering image to obtain and output a corresponding feature enhanced image, and adding the feature enhanced image and the difference value processing image pixel by pixel to obtain a corresponding reconstructed image and outputting the reconstructed image;
the detection alarm mechanism is connected with the targeted processing equipment and is used for receiving the reconstructed image, measuring each depth of field of each ship in the reconstructed image, taking the nearest depth of field in each depth of field as an alarm parameter, sending ship too close information when the alarm parameter is less than a limit amount, and sending ship distance normal information when the alarm parameter is more than or equal to the limit amount;
and the central control display screen is arranged in the cab (2), is respectively connected with the detection alarm mechanism and the side camera, and is used for receiving and displaying the instant lateral image when the ship approach information is received.
5. The coal-carrying vessel of claim 4, wherein the side camera includes an optical lens and a zoom motor, the optical lens being located on an imaging optical path of the side camera; the zooming motor is respectively connected with the optical lens and the driving control equipment and used for realizing the movement control of the optical lens when receiving the zooming driving signal so as to correspondingly change the imaging focal length of the side camera.
6. The coal-carrying vessel of claim 5, wherein the zoom motor is further configured to interrupt control of movement of the optical lens to keep an imaging focal length of the side camera constant upon receiving the driving end signal.
7. The coal carrier of claim 6, wherein in the region-modifying device, numerically adjusting each region-segmentation threshold based on the global segmentation threshold comprises: and adjusting the value of the region segmentation threshold value based on the difference value from the integral segmentation threshold value to each region segmentation threshold value.
8. The coal carrier of claim 7, wherein the region-modifying device numerically adjusting the region-split threshold based on the magnitude of the difference between the overall-split threshold and each of the region-split thresholds comprises: the adjusted region segmentation threshold is the sum of the region segmentation threshold and one fourth of the difference.
9. The coal-carrying vessel of claim 6, wherein the central control display screen is further configured to stop receiving and displaying the instantaneous side-to-side image upon receiving the normal ship-to-side information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911079132.7A CN111086604A (en) | 2019-11-07 | 2019-11-07 | Coal carrying ship |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911079132.7A CN111086604A (en) | 2019-11-07 | 2019-11-07 | Coal carrying ship |
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| CN111086604A true CN111086604A (en) | 2020-05-01 |
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| CN201911079132.7A Withdrawn CN111086604A (en) | 2019-11-07 | 2019-11-07 | Coal carrying ship |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201117017Y (en) * | 2007-04-29 | 2008-09-17 | 上海海事大学 | Ship circumjacent water area safety visible monitoring system |
| CN106005289A (en) * | 2016-08-10 | 2016-10-12 | 青岛欧森系统技术有限公司 | Chemical recovery ship |
| CN108985267A (en) * | 2018-08-14 | 2018-12-11 | 浙江大丰实业股份有限公司 | Auditorium identity scene identification system |
| CN109204106A (en) * | 2018-08-27 | 2019-01-15 | 浙江大丰实业股份有限公司 | Stage equipment mobile system |
| CN109224341A (en) * | 2018-08-14 | 2019-01-18 | 浙江大丰实业股份有限公司 | Fire Curtain isolation effect verifying bench |
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2019
- 2019-11-07 CN CN201911079132.7A patent/CN111086604A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201117017Y (en) * | 2007-04-29 | 2008-09-17 | 上海海事大学 | Ship circumjacent water area safety visible monitoring system |
| CN106005289A (en) * | 2016-08-10 | 2016-10-12 | 青岛欧森系统技术有限公司 | Chemical recovery ship |
| CN108985267A (en) * | 2018-08-14 | 2018-12-11 | 浙江大丰实业股份有限公司 | Auditorium identity scene identification system |
| CN109224341A (en) * | 2018-08-14 | 2019-01-18 | 浙江大丰实业股份有限公司 | Fire Curtain isolation effect verifying bench |
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Application publication date: 20200501 |