CN113238233A - Device and method for quickly measuring sensitivity of long linear array element based on underwater camera - Google Patents
Device and method for quickly measuring sensitivity of long linear array element based on underwater camera Download PDFInfo
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- CN113238233A CN113238233A CN202110385954.9A CN202110385954A CN113238233A CN 113238233 A CN113238233 A CN 113238233A CN 202110385954 A CN202110385954 A CN 202110385954A CN 113238233 A CN113238233 A CN 113238233A
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- China
- Prior art keywords
- linear array
- camera
- hydrophone
- measuring
- array element
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/86—Combinations of sonar systems with lidar systems; Combinations of sonar systems with systems not using wave reflection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/521—Constructional features
Abstract
The utility model provides a quick measuring device and method of long linear array element sensitivity based on underwater camera, including the survey ship, be equipped with the unwrapping wire drum on the survey ship, the linear array twines on the unwrapping wire drum, be equipped with a plurality of array elements on the linear array, be equipped with camera display device on the survey ship, underwater measurement system and transmitter, the survey ship passes through fixed rope and sets up the camera under water, hydrophone and sound source are connected, the camera, hydrophone and sound source pass through the cable respectively with camera display device, underwater measurement system and transmitter are connected, be equipped with the spacer assembly between the fixed rope of hydrophone connection survey ship and the linear array. The invention is used for solving the problems of low testing efficiency and long testing period of the existing measuring method.
Description
Technical Field
The invention relates to a device and a method for quickly measuring the sensitivity of a long linear array element based on an underwater camera.
Background
With the development of sonar technology, the application mode of forming a linear array by adopting a multi-sensor array is more and more extensive, and the measurement workload is larger and larger. Due to the increase of the number of array elements, the test workload of the sensitivity of each array element system after array formation is huge, the test time is up to several days or even several weeks, the test generally adopts the array elements and the standard hydrophones to carry out comparison test, and the measurement principle is shown in fig. 1.
The array element to be measured is required during measurement, the standard hydrophone is fixed at the same depth and relative position, the same depth and fixed position of the standard hydrophone and the array element to be measured are difficult to guarantee underwater, the standard hydrophone and the array element to be measured are generally adopted to be fixed together (generally, the white cloth tape is used for bundling and fixing, and the test object is a specified array element), so that the array element is required to be discharged from the water surface after each measurement of one array element, the standard hydrophone is taken down and is fixed on the next array element again, the measurement efficiency is low, the period is overlong, particularly, the number of the array elements is more obvious, and generally, one array element can be measured within about 0.5 hour.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device and a method for quickly measuring the sensitivity of a long linear array element based on an underwater camera, which are used for solving the problems of low test efficiency and long test period of the existing measurement method.
In order to solve the above problems, the technical solution to be solved by the present invention is:
the utility model provides a quick measuring device of long linear array element sensitivity based on camera under water, including measuring the ship, be equipped with the unwrapping wire drum on the measuring ship, the linear array winding is on the unwrapping wire drum, be equipped with a plurality of array elements on the linear array, be equipped with camera display device on the measuring ship, underwater measurement system and transmitter, the measuring ship passes through fixed rope and sets up at the camera under water, hydrophone and sound source are connected, the camera, hydrophone and sound source pass through the cable respectively with camera display device, underwater measurement system and transmitter are connected, be equipped with the spacer between fixed rope and the linear array of measuring ship is connected to the hydrophone.
The wire winding device is characterized by further comprising a wire winding disc, wherein one end of the linear array is wound on the wire winding disc, the pulley is arranged on the linear array, and the pulley is fixedly connected with the first balancing weight.
The lower end of the hydrophone is connected with a second balancing weight.
The spacing means comprises a slip ring.
The spacer comprises a support, two grooved wheels are arranged in the support, the linear array is arranged between the two grooved wheels, a ring sleeve is sleeved on a fixing rope of the hydrophone connecting and measuring ship and fixedly connected with the support through a limiting rod, a plurality of jackscrews are connected onto the ring sleeve, and the ring sleeve is fixedly connected with a rudder blade through a connecting rod.
Utilize earlier spacer assembly to restrict linear array and hydrophone in certain distance, then utilize the camera to observe array element position, when the array element that awaits measuring and standard hydrophone are at same degree of depth, open the sound source and carry out measured data collection, gather, put the same position under the array element that awaits measuring of back and measure, if the depth of water is enough, can measure complete individual linear array very fast.
If the linear array is too long or the water depth is not enough, the linear array is recovered by the take-up reel, and the linear array is kept in a vertical posture by the pulley and the first balancing weight.
The invention has the beneficial effects that:
1. the underwater camera is used for observing the position of the array element, so that the measuring device is simple to install, high in measuring speed and high in efficiency.
2. And the distance between the linear array and the standard hydrophone is limited by using a spacing device so as to meet the measurement requirement.
3. The automatic counterweight pulley and the cable drum are added to measure the ultra-long linear array, so that the applicability is good.
Drawings
The invention is further described below with reference to the accompanying drawings:
figure 1 is a structural schematic diagram of the conventional linear array element sensitivity measurement principle,
figure 2 is a schematic structural view of the present invention,
figure 3 is a schematic structural view of the present invention,
fig. 4 is a schematic view of the spacer according to the present invention.
In the figure: the device comprises a measuring ship 1, a camera display device 2, a linear array signal acquisition system 3, an payoff reel 4, an underwater measuring system 5, a transmitter 6, a spacing device 7, a hydrophone 8, a sound source 9, a second balancing weight 10, an array element 11, a linear array 12, a camera 13, a fixed rope 14, a take-up reel 15, a pulley 16, a first balancing weight 17, a sliding ring 70, a grooved wheel 71, a support 72, a limiting rod 73, a ring sleeve 74, a jackscrew 75, a rudder sheet 76 and a connecting rod 77.
Detailed Description
As shown in figure 2, the device for rapidly measuring the sensitivity of the long linear array element based on the underwater camera comprises a measuring ship 1, wherein an unwinding wire coil 4 is arranged on the measuring ship 1, a linear array 12 is wound on the unwinding wire coil 4, a first balancing weight 17 is connected to the lower end of the linear array 12, a plurality of array elements 11 are arranged on the linear array 12, a camera display device 2, an underwater measuring system 5, a transmitter 6 and a linear array signal acquisition system 3 are arranged on the measuring ship 1, the measuring ship 1 is connected with an underwater camera 13 through a fixed rope 14, the hydrophone 8 is connected with the sound source 9, the camera 13, the hydrophone 8 and the sound source 9 are respectively connected with the camera display device 2, the underwater measurement system 5 and the transmitter 6 through cables, a spacing device 7 is arranged between a fixed rope 14 and a linear array 12 of the measuring ship 1, which are connected with the hydrophone 8, and the spacing device 7 controls the spacing between the hydrophone 8 and the linear array 7 within 5 cm-10 cm.
The working principle of the invention is as follows:
a spacer 7 perpendicular to the fixed rope 14 can be added near the standard hydrophone 8 without affecting the measurement, and the spacer 7 limits the linear array 12 and the standard hydrophone 8 within a certain distance and does not move along with the linear array 12. Before the measurement, utilize underwater camera 13 to observe array element 11 position, when array element 11 and standard hydrophone 8 that await measuring are at same degree of depth, open sound source 9 and carry out measured data collection, gather, transfer the same position with the next array element 11 that await measuring and measure, if enough depth of water is more than 20m, can measure whole linear array 12 soon. The actual measurement can finish measuring one array element 11 in 2 minutes, which is 15 times faster than the traditional measurement method.
The wire winding device is characterized by further comprising a wire winding disc 15, wherein one end of the linear array 12 is wound on the wire winding disc 15, a pulley 16 is arranged on the linear array 12, and the pulley 16 is fixedly connected with a first balancing weight 17. If the linear array 12 is too long or the water depth is not enough and the water depth is less than 20m, the linear array 12 cannot be lowered all the time, and the method of adding the pulley 16 and the first counterweight block 17 as shown in fig. 3 can be adopted. The linear array 12 is retrieved through a take-up reel 15 for continuous measurement. The first balancing weight 17 can be placed at the bottom of the pool and is always kept at a lower position through self weight, and the measuring position of the linear array 12 influenced by the first balancing weight is kept at a nearly vertical posture.
The lower end of the hydrophone 8 is connected with a second balancing weight 10. The second clump weight 10 can hold the hydrophone 8 vertical.
As shown in fig. 4, the spacer means 7 comprises a slip ring 70. The spacer 7 can be a simple plastic tie or other light materials, the diameter of the tie is about 20cm, the tie can be flexibly selected according to the diameter of the linear array 12, and the spacer is convenient to manufacture and install.
The spacer 7 comprises a support 72, two grooved wheels 71 are arranged in the support 72, the linear array 12 is arranged between the two grooved wheels 71, a ring sleeve 74 is sleeved outside a fixed rope 14 of the hydrophone 8 connected with the measuring ship 1, the ring sleeve 74 is fixedly connected with the support 72 through a limiting rod 73, a plurality of jackscrews 75 are connected onto the ring sleeve 74, and the ring sleeve 74 is fixedly connected with a rudder sheet 76 through a connecting rod 77. The two grooved wheels 71 can ensure that the linear array 12 can move smoothly, the spacing between the hydrophone 8 and the linear array 12 is kept unchanged by the limiting rods 73, and the rudder piece 76 can reduce disturbance of the hydrophone 8 and the linear array 12 caused by water flow change in water.
Claims (7)
1. The utility model provides a quick measuring device of long linear array element sensitivity based on camera under water, is equipped with unwrapping wire drum (4) including measuring ship (1) on measuring ship (1), and linear array (12) winding is equipped with a plurality of array elements (11) on unwrapping wire drum (4) on linear array (12), is equipped with camera display device (2) on measuring ship (1), underwater measurement system (5), transmitter (6) and linear array signal acquisition system (3), its characterized in that: the measuring ship (1) is connected with a camera (13), a hydrophone (8) and a sound source (9) which are arranged under water through a fixed rope (14), the camera (13), the hydrophone (8) and the sound source (9) are respectively connected with a camera display device (2), an underwater measuring system (5) and a transmitter (6) through cables, and a spacing device (7) is arranged between the fixed rope (14) and a linear array (12) of the measuring ship (1) and is connected with the hydrophone (8).
2. The device for rapidly measuring the sensitivity of the long linear array element based on the underwater camera as claimed in claim 1, wherein: the wire winding device is characterized by further comprising a wire winding coil (15), one end of the linear array (12) is wound on the wire winding coil (15), a pulley (16) is arranged on the linear array (12), and the pulley (16) is fixedly connected with a first balancing weight (17).
3. The device for rapidly measuring the sensitivity of the long linear array element based on the underwater camera as claimed in claim 1, wherein: the lower end of the hydrophone (8) is connected with a second balancing weight (10).
4. The device for rapidly measuring the sensitivity of the long linear array element based on the underwater camera as claimed in any one of claims 1 to 3, wherein: the spacing means (7) comprises a slip ring (70).
5. The device for rapidly measuring the sensitivity of the long linear array element based on the underwater camera as claimed in any one of claims 1 to 3, wherein: the spacer device (7) comprises a support (72), two grooved wheels (71) are arranged in the support (72), the linear array (12) is arranged between the two grooved wheels (71), a ring sleeve (74) is sleeved on a fixed rope (14) of the hydrophone (8) connected with the measuring ship (1), the ring sleeve (74) is fixedly connected with the support (72) through a limiting rod (73), a plurality of jackscrews (75) are connected onto the ring sleeve (74), and the ring sleeve (74) is fixedly connected with a rudder sheet (76) through a connecting rod (77).
6. A method of using the apparatus for rapid measurement of the sensitivity of the array elements (11) of the long linear array (12) as claimed in any one of claims 1 to 3, characterized in that: if the water depth is enough, the linear array (12) and the hydrophone (8) are limited within a certain distance by using the spacer device (7), then the position of the array element (11) is observed by using the camera (13), when the array element (11) to be measured and the standard hydrophone (8) are at the same depth, the sound source (9) is started to collect measurement data, the collection is completed, and the next array element (11) to be measured is placed to the same position to be measured.
7. The method for rapidly measuring the sensitivity of the long linear array element based on the underwater camera as recited in claim 6 and claim 2, wherein: if the linear array (12) is too long or the water depth is not enough, the linear array (12) is recovered by a take-up reel (15), and the linear array (12) is kept in a vertical posture by a pulley (16) and a first balancing weight (17).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110385954.9A CN113238233B (en) | 2021-04-12 | 2021-04-12 | Device and method for quickly measuring sensitivity of long linear array element based on underwater camera |
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| CN202110385954.9A CN113238233B (en) | 2021-04-12 | 2021-04-12 | Device and method for quickly measuring sensitivity of long linear array element based on underwater camera |
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| CN113238233A true CN113238233A (en) | 2021-08-10 |
| CN113238233B CN113238233B (en) | 2022-10-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018396A (en) * | 2021-10-22 | 2022-02-08 | 中国舰船研究设计中心 | Low-frequency underwater sound measurement system and layout method |
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| CN113238233B (en) | 2022-10-04 |
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