A ship draft detection system based on ultrasonic wave

Abstract

The invention relates to the technical field of ship draft detection, and discloses a ship draft detection system based on ultrasonic wave, comprising a control machine, a lifting mechanism, an ultrasonic emission matrix, an ultrasonic receiving matrix, a float type liquid level sensor, and a height measuring mechanism. The control machine performs coordinated control connection on the lifting mechanism, the ultrasonic emission matrix, the ultrasonic receiving matrix, the float type liquid level sensor, and the height measuring mechanism respectively through electrical signals, and processes the feedback data, so as to achieve the effect of accurate calculation result of ship hull draft depth detection and verification of the calculation result. When a conventional ultrasonic ship draft detection structure detects a ship floating up and down, there is a problem that the bottom position detection has a large error, the horizontal plane positioning is inaccurate, and finally the ship hull draft data is inaccurate.

Description

Technical Field

[0001] The invention relates to the technical field of ship draft detection, and in particular to an ultrasonic-based ship draft detection system. Background Art

[0002] At present, the detection technologies for ship draft depth at home and abroad mainly include: image recognition method, electronic water gauge method, pressure sensing method, laser ranging method, laser light curtain method and ultrasonic detection method. Among them, ultrasonic technology can adapt to the detection needs under different water depths, water qualities and ambient temperatures due to its advantages such as high energy concentration, good directivity, small attenuation in the transmission process, strong reflection performance, and little influence by water quality. At present, ultrasonic technology is used to detect the draft depth of ships. According to the different positions of the sensor arrangement, it can be roughly divided into two types, side scanning type and underwater upward scanning type, and the working principle of side scanning ship draft detection is mainly divided into two types: one is reflection type and the other is shielding type. The main method adopted by the present invention is the shielding type in the side scanning type.

[0003] The utility model patent with publication number CN216468358U, in its background technology, cites multiple patents and documents pointing out that the existing side-scanning draft depth detection technology has problems such as complex structure, high cost, and high power consumption. It uses two sets of lifting mechanisms to synchronously drive the ultrasonic transmitting module and the ultrasonic receiving module to sink synchronously until the ultrasonic receiving module can receive the signal sent by the ultrasonic transmitting module, measure the position of the bottom of the ship, and then obtain the draft depth of the hull through the descending distance of the lifting mechanism;

[0004] Compared with the patents and documents cited by it, this patent still has the following problems after improvements:

[0005] 1. The number of ultrasonic transmitting modules and ultrasonic receiving modules used is indeed greatly reduced. However, according to conventional practice, the hull is not stationary on the water surface, and its bottom also floats up and down underwater. It is impossible to accurately locate the position of the bottom of the ship by relying solely on a set of ultrasonic transmitting modules and ultrasonic receiving modules. In addition, when the positions of the ultrasonic transmitting modules and ultrasonic receiving modules are within the range of the up and down swinging of the bottom of the ship, the signals received by the ultrasonic receiving module are intermittent, and the patent does not solve this problem;

[0006] 2. In the process of adjusting the initial positions of the ultrasonic transmitting module and the ultrasonic receiving module below the water surface, due to the turbulence of the water surface, there are wave crests and wave bottoms when the waves hit the shore. Simply adjusting the initial positions of the ultrasonic transmitting module and the ultrasonic receiving module below the water surface will result in a huge measurement error. Depending on the mass of the hull, a larger mass hull will create larger waves, and the distance between the wave crest and the wave bottom will be higher, resulting in a greater measurement error.

[0007] 3. The patent also states that "taking into account that the bottom of the ship is not in a straight line during the process of entering and exiting the light curtain detection area", the patent completes a draft depth detection, resets the lifting mechanism, and descends again for detection, records the draft depth each time, draws a draft depth curve for each measuring point, and analyzes the maximum draft depth of the ship. First of all, this operation method will also have the problem of high power consumption. Secondly, this detection method is accidental. When the position of the bottom of the ship is close to the top of the hull floating up and down, the detected hull draft result will be slightly smaller than the actual value; when the position of the bottom of the ship is close to the bottom of the hull floating up and down, the detected hull draft result will be slightly larger than the actual value. In actual operation, it is impossible to guarantee the average of the measured values, which makes the measured draft depth have a large error range;

[0008] Therefore, it is necessary to develop an ultrasonic-based ship draft detection system. Summary of the invention

[0009] The purpose of the present invention is to provide a ship draft detection system based on ultrasound, which solves the problem raised in the background technology that, according to actual conditions, when a conventional ultrasonic ship draft detection structure detects a floating ship, there is a large error in the detection of the bottom position of the ship, the horizontal plane positioning is inaccurate, and ultimately causes inaccurate hull draft data.

[0010] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ship draft detection system based on ultrasonic wave, comprising a control machine, a lifting mechanism, an ultrasonic wave transmitting matrix, an ultrasonic wave receiving matrix, a float type liquid level sensor, and a height measuring mechanism, wherein the control machine performs coordinated control connection on the lifting mechanism, the ultrasonic wave transmitting matrix, the ultrasonic wave receiving matrix, the float type liquid level sensor, and the height measuring mechanism respectively through electrical signals, and processes the feedback data;

[0011] The lifting mechanism is provided with two groups, which are respectively installed at the same height on the shores on both sides of the hull. The lifting mechanism includes a servo motor installed on the shore. The output end of the servo motor is connected to a spiral rod. The lower end of the spiral rod vertically extends to the bottom of the water. The surface of the spiral rod is movably connected to a lifting block. The surface of the spiral rod below the lifting block is movably connected to a cleaning component. The cleaning component is used to clean dirt on the surface of the spiral rod. The servo motor is controlled by a control machine through an electrical signal.

[0012] The ultrasonic transmitting matrix and the ultrasonic receiving matrix are respectively composed of a number of ultrasonic transmitting and receiving devices arranged in odd numbers, and the ultrasonic transmitting matrix and the ultrasonic receiving matrix are respectively installed on one side of the lifting blocks of the two groups, and the ultrasonic transmitting matrix and the ultrasonic receiving matrix are controlled by the control machine through electrical signals;

[0013] A well is opened on the bank of one side of the hull, and the bottom of the well is connected with the river channel where the hull is located. A float-type liquid level sensor is fixedly installed in the well, and a channel connecting the bottom of the well with the river channel is provided with a water flow slowing structure for smoothing the undercurrent of water flowing from the river channel to the well. The float-type liquid level sensor is used to measure the distance of the rise of the horizontal plane in the well, and feed back the data to the control machine through electrical signals.

[0014] Furthermore, the height measuring mechanism includes an electric slider arranged on one side of the shore, which moves up and down in the vertical direction. A level is installed on one end of the electric slider. The height measuring mechanism also includes a measuring ruler installed on the other side of the shore. The level calculates the overall height of the hull by horizontally observing the position of the top of the hull at the scale line of the measuring ruler.

[0015] Furthermore, the bottom end of the measuring ruler is fixedly connected to one end of the lifting block, the zero scale line of the measuring ruler is in the same horizontal position as a group of ultrasonic receivers in the center of the ultrasonic receiving matrix.

[0016] Furthermore, the two groups of lifting blocks are controlled by the control machine synchronously to the servo motor, so that the ultrasonic transmitting matrix and the ultrasonic receiving matrix on one side rise and fall synchronously, and the ultrasonic transmitting matrix and the ultrasonic receiving matrix are always in the same horizontal plane.

[0017] Furthermore, the cleaning assembly includes an inner connecting cover movably installed on the surface of the spiral rod, a middle connecting cover rotatably connected to the outer side of the inner connecting cover, a trigger regulating component is provided at the upper end of the middle connecting cover, the trigger regulating component movably penetrates the lower surface of the middle connecting cover, an outer connecting cover is rotatably connected to the outer side of the middle connecting cover, and two groups of one-way braking components are movably installed between the outer connecting cover and the middle connecting cover, and between the middle connecting cover and the inner connecting cover.

[0018] Furthermore, the two groups of one-way brake components are of the same model, and their sizes are configured accordingly according to the interlayer space between the outer connecting cover and the middle connecting cover and between the middle connecting cover and the inner connecting cover. The two groups of one-way brake components are installed in a mirror-like manner according to the central axis of the spiral rod.

[0019] Furthermore, sealing plates are installed at the upper and lower ends of the inner side of the inner connecting cover, and the upper surface of the sealing plate is penetrated by an engaging hole that is engaged with the spiral rod. A plurality of groups of blocks B are fixedly installed in an annular distribution on the upper surface of the inner connecting cover, and upright brushes are evenly distributed in the inner cavity of the inner connecting cover, and the upright brushes are used to clean the dirt attached to the spiral rod on the bottom surface of the water.

[0020] Furthermore, the trigger and control component includes an installation control frame arranged inside the middle connecting cover and movably installed at the upper and lower ends. Two groups of clamping rods A are fixedly and symmetrically connected to the inner side of the upper end of the installation control frame, and two groups of clamping rods B are symmetrically and fixedly connected to the outer side of the lower end of the installation control frame. A rotating wheel is rotatably installed on the top contact end of the installation control frame, and the clamping rod A is movably engaged between the two groups of clamping blocks B.

[0021] Furthermore, the one-way braking component includes a bevel gear fixedly installed on the outer surface of the middle connecting cover, a connecting block is arranged on one side of the bevel gear, a braking tooth is fixedly arranged on one side of the connecting block, the braking tooth is movably engaged with the bevel gear, one end of the connecting block is rotatably connected to a rotating connecting column, and mounting blocks are rotatably installed on both ends of the rotating connecting column. A torsion spring is sleeved on the surface of the rotating connecting column between the connecting block and the mounting block, and the two ends of the torsion spring are respectively fixedly connected to the connecting block and one side of the mounting block. The initial elastic potential energy of the torsion spring makes the braking tooth always fit the bevel gear.

[0022] Furthermore, two groups of push plates are fixedly installed on one side of the external connecting cover, and the two groups of push plates form an angle of ninety degrees. A plurality of groups of clamping blocks A are fixedly installed on the lower surface of the external connecting cover in a circular distribution. The holding rod B is movably engaged between the two groups of clamping blocks A, and the engaging connection between the holding rod B and the clamping connection between the clamping blocks A and the engaging connection between the holding rod A and the clamping connection between the clamping blocks B are affected by the length of the mounting control frame, and only one situation can be satisfied at the same time. When the holding rod B is adjusted so that it is engaged between the two groups of clamping blocks A, the external connecting cover will be limited to the outside of the middle connecting cover, so that the external connecting cover cannot be rotated on the outside of the middle connecting cover.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention provides a ship draft detection system based on ultrasonic waves, which detects the small height difference of the water level in the shaft by using a float type liquid level sensor, and then calculates the average value through a control machine, thereby calculating the existence height that is relatively closer to the horizontal plane, and the measurement result is accurate.

[0025] 2. The present invention provides a ship draft detection system based on ultrasound. The system first drives the ultrasonic transmitting matrix and the ultrasonic receiving matrix to descend by the cooperation of a lifting mechanism to determine the approximate position of the bottom of the floating hull. Then, the ultrasonic transmitting matrix and the ultrasonic receiving matrix cooperate to determine the floating range of the bottom of the floating hull. The control machine calculates and takes the middle value as the position height of the bottom of the hull. After comparing it with the measured horizontal plane height, the hull draft is obtained. The measurement process is reasonable and the result is accurate.

[0026] 3. The present invention provides an ultrasonic-based ship draft detection system, which measures the height of the ship through a height measuring mechanism, and then uses the data fed back by the height measuring mechanism and a float-type liquid level sensor to calculate the height of the hull above the water surface by a control machine, and verifies the obtained hull draft by subtracting the height of the hull above the water surface from the ship height, thereby further increasing the accuracy of the hull draft data. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the system structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the detection process of the present invention;

[0029] Figure 3 For the present invention Figure 2 Schematic diagram of the detailed detection process of the first round of detection and adjustment steps;

[0030] Figure 4 For the present invention Figure 2 Schematic diagram of the detailed detection process of the second round of detection and adjustment steps;

[0031] Figure 5 For the present invention Figure 2 Schematic diagram of detailed inspection process of medium ship height calculation steps;

[0032] Figure 6 For the present invention Figure 1 Schematic diagram of mid-height markings;

[0033] Figure 7 For the present invention Figure 2 Schematic diagram of the calculation process of the height above the water surface of the mid-hull;

[0034] Figure 8 It is a schematic diagram of the lifting mechanism and cleaning assembly structure of the present invention;

[0035] Fig. 9 It is a schematic diagram of the structure of the cleaning component of the present invention;

[0036] Fig.10 It is a schematic diagram of the bottom structure of the cleaning component of the present invention;

[0037] Fig.11 It is a schematic diagram of the internal structure of the cleaning component of the present invention;

[0038] Fig.12 It is a schematic diagram of the structure of the one-way brake component of the present invention;

[0039] Fig.13 It is a schematic diagram of the structure of the triggering and regulating component of the present invention;

[0040] Fig.14It is a schematic diagram of the structure of the inner connection cover of the present invention.

[0041] In the figure: 1. control machine; 2. lifting mechanism; 21. servo motor; 22. screw rod; 23. lifting block; 3. ultrasonic transmitting matrix; 4. ultrasonic receiving matrix; 5. float type liquid level sensor; 6. height measuring mechanism; 61. electric slider; 62. level; 63. measuring ruler; 7. cleaning assembly; 71. outer connecting cover; 711. push plate; 712. block A; 72. one-way braking component; 721. bevel gear; 722. connecting block; 723. braking tooth; 724. rotating connecting column; 725. torsion spring; 726. mounting block; 73. middle connecting cover; 74. trigger regulating component; 741. mounting control frame; 742. holding rod A; 743. rotating wheel; 744. holding rod B; 75. inner connecting cover; 751. sealing plate; 752. block B; 753. vertical brush. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0044] Combination Figure 1 A ship draft detection system based on ultrasound is characterized by comprising a control machine 1, a lifting mechanism 2, an ultrasonic emission matrix 3, an ultrasonic receiving matrix 4, a float type liquid level sensor 5, and a height measuring mechanism 6. The control machine 1 uses electrical signals to coordinately control and connect the lifting mechanism 2, the ultrasonic emission matrix 3, the ultrasonic receiving matrix 4, the float type liquid level sensor 5, and the height measuring mechanism 6, and processes the feedback data.

[0045] The present invention will be further described below in conjunction with the embodiments.

[0046] Embodiment 1:

[0047] See also Figure 2-Figure 8, the lifting mechanism 2 is provided with two groups, which are respectively installed at the same height on the banks on both sides of the hull. The lifting mechanism 2 includes a servo motor 21 installed on the shore. The output end of the servo motor 21 is connected to a screw rod 22. The lower end of the screw rod 22 extends vertically to the bottom of the water. The surface of the screw rod 22 is movably connected to a lifting block 23. The surface of the screw rod 22 below the lifting block 23 is movably connected to a cleaning component 7. The cleaning component 7 is used to clean the dirt on the surface of the screw rod 22. The servo motor 21 is controlled by the control machine 1 through electrical signals. The ultrasonic transmitting matrix 3 and the ultrasonic receiving matrix 4 are respectively composed of a number of ultrasonic transmitters and receivers arranged in odd numbers. The ultrasonic transmitting matrix 3 and the ultrasonic receiving matrix 4 are respectively installed on one side of the lifting block 23 of the two groups. The ultrasonic transmitting matrix 3 and the ultrasonic receiving matrix 4 are controlled by the control machine 1 through electrical signals. A well is opened on the bank on one side of the hull. The bottom end of the well is connected to the river where the hull is located. The float type liquid level sensor 5 is fixedly installed in the well. The channel connecting the bottom end of the well and the river is provided with a water flow sensor. The slow-flow structure is used to smooth the undercurrent of the water flowing from the river to the well. The float type liquid level sensor 5 is used to measure the distance of the rise of the horizontal plane in the well, and feed back the data to the control machine 1 through an electrical signal. The height measuring mechanism 6 includes an electric slider 61 movably installed on one side of the shore. The electric slider 61 moves up and down in the vertical direction. A level 62 is installed at one end of the electric slider 61. The height measuring mechanism 6 also includes a measuring ruler 63 installed on the other side of the shore. The level 62 calculates the overall height of the hull by horizontally observing the position of the top of the hull at the scale line of the measuring ruler 63. The bottom end of the measuring ruler 63 is fixedly connected to one end of the lifting block 23. The zero scale line of the measuring ruler 63 is in the center of the ultrasonic receiving matrix 4. A group of ultrasonic receivers are in the same horizontal position. The two groups of lifting blocks 23 are synchronously controlled by the control machine 1 to the servo motor 21, so that the ultrasonic transmitting matrix 3 on one side and the ultrasonic receiving matrix 4 are synchronously raised and lowered, and the ultrasonic transmitting matrix 3 and the ultrasonic receiving matrix 4 are always in the same horizontal plane.

[0048] Working principle: First, after the ship enters the detection area in the river, the water level in the well where the float type liquid level sensor 5 is located will rise accordingly. The float type liquid level sensor 5 measures the rising water level distance and sends the data to the control machine 1. It is common that the water surface in the well will float up and down slightly. The control machine 1 records the position distance of the top and bottom of the water surface. Finally, the control machine 1 calculates the average value and uses it as the current water level height;

[0049] Next, the controller 1 controls the two groups of servo motors 21 to drive the screw rods 22 to rotate, and lift the two groups of lifting blocks 23 to the position where the horizontal plane is located, so that the ultrasonic transmitting matrix 3 and the ultrasonic receiving matrix 4 corresponding to the two groups of lifting blocks 23, and the ultrasonic transmitting and receiving of the center group thereof are at the same height as the horizontal plane;

[0050] Next, the control machine 1 controls the two groups of lifting blocks 23 to descend at a uniform speed again, and synchronously controls the ultrasonic transmitting matrix 3 and the ultrasonic receiving matrix 4 to open the ultrasonic transmitter and receiver in the center group to work. Due to the signal blocking by the hull, the receiver cannot receive the signal sent by the transmitter. As the two groups of lifting blocks 23 continue to sink, after the ultrasonic transmitter and receiver position exceeds the bottom of the ship, along with the receiver receiving the ultrasonic signal sent by the transmitter, the servo motor 21 is controlled to stop working, and the lifting block 23 is suspended at the current position;

[0051] Continuing from the previous step, since the bottom of the ship is floating up and down underwater, the signal received by the ultrasonic receiver is intermittent. At this time, all ultrasonic transmitting matrices 3 and ultrasonic receiving matrices 4 are controlled to be turned on. During the up and down floating of the bottom of the ship, the positions where the top group of ultrasonic receivers can intermittently receive ultrasonic signals and the positions where the bottom group of ultrasonic receivers can intermittently receive ultrasonic signals are detected. The center position between the two groups of ultrasonic receivers is calculated, and the lifting block 23 is controlled to move the ultrasonic transmitter at the center position to that position. Subsequently, the movement of the two groups of lifting blocks 23 is stopped and they are suspended and fixed at the current position. At this time, the relative average value of the draft of the ship can be obtained based on the actual displacement of the lifting block 23 after it moves from the horizontal plane.

[0052] After the hull draft is obtained, the obtained hull water blowing data can be reviewed by the height measuring mechanism 6. The working principle is as follows: After the position of the lifting block 23 corresponding to the measuring ruler 63 is fixed, the position of the zero scale line of the measuring ruler 63 stays at the relative position of the bottom of the ship. At this time, the electric slider 61 drives the level 62 to rise, and the level 62 measures the position of the top of the ship corresponding to the scale line on the surface of the measuring ruler 63 in the same plane, thereby obtaining the overall height of the hull. Commonly, the top of the ship also floats up and down with the hull. Similarly, the position of the top and the bottom of the top of the ship is measured by the level 62 during the floating process, and the average value is calculated by the control machine 1 as the ship height;

[0053] Later, based on the rising distance of the electric slider 61, the displacement is recorded as h3, and the distance from the zero point of the float of the float-type liquid level sensor 5 to the bottom point of the initial position of the electric slider 61 is recorded as H. The length of H is fixed by the installation position of the float-type liquid level sensor 5. The distance that the float rises with the water surface after passing through the hull is recorded as h1. The control machine 1 makes a simple calculation. At this time, the length h2 of the water surface from the bottom point of the initial position of the electric slider 61 is equal to H minus h1, and the height of the hull above the water surface is equal to h2 plus the length of h3. The height of the hull above the water surface plus the depth of the hull draft are compared with the one-sided total length of the hull. When the values ​​of the two groups are within the allowable error range, the measured hull draft can be verified as a valid value.

[0054] Embodiment 2:

[0055] See also Figure 8-Figure 14 The surface of the spiral rod 22 is movably mounted with an inner connecting cover 75, the outer side of the inner connecting cover 75 is rotatably connected to the middle connecting cover 73, the upper end of the middle connecting cover 73 is provided with a trigger regulating component 74, the trigger regulating component 74 movably penetrates the lower surface of the middle connecting cover 73, the outer side of the middle connecting cover 73 is rotatably connected with an outer connecting cover 71, and two groups of one-way brake components 72 are movably mounted between the outer connecting cover 71 and the middle connecting cover 73 and between the middle connecting cover 73 and the inner connecting cover 75. The two groups of one-way brake components 72 have the same model and size according to the outer connecting cover 71 and the middle connecting cover. The interlayer space between the middle connecting cover 73 and the inner connecting cover 75 is configured accordingly. The two groups of one-way brake components 72 are installed in a mirror image with respect to the central axis of the spiral rod 22. The upper and lower ends of the inner side of the inner connecting cover 75 are respectively installed with sealing disks 751. The upper surface of the sealing disk 751 is penetrated with an engaging hole engaged with the spiral rod 22. The upper surface of the inner connecting cover 75 is annularly distributed and fixed with multiple groups of blocks B752. The inner cavity of the inner connecting cover 75 is evenly distributed with upright brushes 753. The upright brushes 753 are used to clean the dirt attached to the spiral rod 22 on the bottom surface of the water.

[0056] The interior of the middle connection cover 73 and the installation control frame 741 that is movably installed at the upper and lower ends, the upper inner side of the installation control frame 741 is fixedly and symmetrically connected with two groups of holding rods A742, and the lower outer side of the installation control frame 741 is symmetrically and fixedly connected with two groups of holding rods B744, and the top contact end of the installation control frame 741 is rotatably installed with a rotating wheel 743, and the holding rod A742 is movably engaged between the two groups of blocks B752. When the holding rod A742 is adjusted to engage between the two groups of blocks B752, the middle connection cover 73 will be limited to the outside of the inner connection cover 75, so that the middle connection cover 73 cannot rotate on the outside of the inner connection cover 75. The outer surface of the middle connection cover 73 is fixedly installed with a bevel gear 721, one side of the bevel gear 721 is provided with a connecting block 722, and one side of the connecting block 722 is fixedly provided with a brake tooth 723, and the brake tooth 723 is movably engaged with the bevel gear 721. When the locking cam 722 is in the unlocking state, the locking cam 723 is in the unlocking state, and the locking cam 723 is in the unlocking state, so that the locking cam 723 is locked.

[0057] Two groups of push plates 711 are fixedly installed on one side of the outer connection cover 71, and the two groups of push plates 711 form an angle of 90 degrees. A plurality of groups of clamping blocks A712 are fixedly installed on the lower surface of the outer connection cover 71 in an annular distribution. The clamping rod B744 is movably engaged between the two groups of clamping blocks A712, and the clamping connection between the clamping rod B744 and the clamping block A712 and the clamping connection between the clamping rod A742 and the clamping block B752 are affected by the length of the mounting control frame 741. Only one situation can be satisfied at the same time. When the clamping rod B744 is adjusted to be engaged between the two groups of clamping blocks A712, the outer connection cover 71 will be limited to the outside of the middle connection cover 73, so that the outer connection cover 71 cannot rotate on the outside of the middle connection cover 73.

[0058] Working principle: the overall structure of the cleaning component 7 is installed below the water surface, and the waves in the water will push the pushing plate 711 to swing back and forth. Because of the limiting relationship of the trigger regulating component 74, only one of the rotational connections between the outer connecting cover 71 and the middle connecting cover 73 or between the middle connecting cover 73 and the inner connecting cover 75 can be maintained in a rotating relationship. Because of the unidirectional limiting relationship of the unidirectional braking component 72, the trigger regulating component 74 is in a limited state, and the swinging outer connecting cover 71 can only push the inner connecting cover 75 to make a turning movement in one direction, thereby pushing the inner connecting cover 75 to move upward or downward on the surface of the spiral rod 22. During the movement, the upright brush 753 on the inner side of the inner connecting cover 75 will scrub the dirt on the surface of the spiral rod 22 to achieve the purpose of cleaning the surface of the spiral rod 22. When the outer connecting cover 71 pushes the inner connecting cover 75 to move upward so that the top of the mounting control frame 741 contacts the bottom of the spiral rod 22, the squeezed The cam 752 of the embodiment of the present invention is a kind of cam which is used to move the handle 74 of the invention, and the cam 753 of the invention is a kind of cam which is used to move the handle 74 of the invention, so that the cam 752 of the invention can be moved to the position where the handle 74 is moved.

[0059] During the process of automatic cleaning of the surface of the spiral rod 22 by the cleaning component 7, there is an unexpected situation, that is, when the lifting block 23 moves downward, it will actively contact the upper end of the installation control frame 741. At this time, the lifting block 23 will push the cleaning component 7 to rotate and move downward, and the rotating wheel 743 can greatly reduce the friction force generated between the top of the installation control frame 741 and the lower surface of the spiral rod 22, so that the process of the spiral rod 22 pushing the cleaning component 7 to rotate downward will be smoother.

[0060] It should be noted that the present invention claims protection for the mechanical and electrical structures of the ship draft system. The signal processing method involved in the specific implementation is only used to explain the working principle of the present invention. It is a computer program product independent of the present invention, but can be executed by the controller of the present invention. In this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ship draft detection system based on ultrasonic wave, characterized in that: The device comprises a control machine (1), a lifting mechanism (2), an ultrasonic transmitting matrix (3), an ultrasonic receiving matrix (4), a float type liquid level sensor (5), and a height measuring mechanism (6). The control machine (1) performs coordinated control connection on the lifting mechanism (2), the ultrasonic transmitting matrix (3), the ultrasonic receiving matrix (4), the float type liquid level sensor (5), and the height measuring mechanism (6) through electrical signals, and processes the feedback data. The lifting mechanism (2) is provided with two groups, which are respectively installed at the same height on the shores of both sides of the hull. The lifting mechanism (2) comprises a servo motor (21) installed on the shore. The output end of the servo motor (21) is connected to a screw rod (22). The lower end of the screw rod (22) vertically extends to the bottom of the water. The surface of the screw rod (22) is movably connected to a lifting block (23). The surface of the screw rod (22) below the lifting block (23) is movably connected to a cleaning component (7). The cleaning component (7) is used to clean dirt on the surface of the screw rod (22). The servo motor (21) is controlled by the control machine (1) through an electrical signal. The ultrasonic transmitting matrix (3) and the ultrasonic receiving matrix (4) are respectively composed of a plurality of ultrasonic transmitting and receiving devices arranged in odd numbers. The ultrasonic transmitting matrix (3) and the ultrasonic receiving matrix (4) are respectively installed on one side of the two groups of lifting blocks (23). The ultrasonic transmitting matrix (3) and the ultrasonic receiving matrix (4) are controlled to operate by the control machine (1) through electrical signals. A well is provided on the bank of one side of the hull, the bottom of the well is connected to the river where the hull is located, a float type liquid level sensor (5) is fixedly installed in the well, and a channel connecting the bottom of the well and the river is provided with a water flow slowing structure for slowing down the undercurrent of water flowing from the river to the well. The float type liquid level sensor (5) is used to measure the distance of the water level rising in the well, and feed back the data to the control machine (1) through an electrical signal; The cleaning assembly (7) comprises an inner connecting cover (75) movably mounted on the surface of the spiral rod (22), a middle connecting cover (73) rotatably connected to the outer side of the inner connecting cover (75), a trigger regulating component (74) being arranged at the upper end of the middle connecting cover (73), the trigger regulating component (74) movably penetrating the lower surface of the middle connecting cover (73), an outer connecting cover (71) rotatably connected to the outer side of the middle connecting cover (73), and two groups of one-way braking components (72) being movably mounted between the outer connecting cover (71) and the middle connecting cover (73) and between the middle connecting cover (73) and the inner connecting cover (75); The two groups of one-way brake components (72) are of the same model and have dimensions correspondingly configured according to the interlayer space between the outer connection cover (71) and the middle connection cover (73) and between the middle connection cover (73) and the inner connection cover (75). The two groups of one-way brake components (72) are installed in a mirror image with respect to the central axis of the spiral rod (22).

2. The ultrasonic-based ship draft detection system according to claim 1, characterized in that: The height measuring mechanism (6) comprises an electric slider (61) arranged on one side of the shore, the electric slider (61) moves up and down in the vertical direction, one end of the electric slider (61) is installed with a level (62), and the height measuring mechanism (6) also comprises a measuring ruler (63) installed on the other side of the shore, the level (62) calculates the overall height of the hull by horizontally observing the position of the top of the hull at the scale line of the measuring ruler (63).

3. The ultrasonic-based ship draft detection system according to claim 2, characterized in that: The bottom end of the measuring ruler (63) is fixedly connected to one end of the lifting block (23), and the zero scale line of the measuring ruler (63) is located at the center of the ultrasonic receiving matrix (4), and a group of ultrasonic receivers are at the same horizontal position.

4. The ultrasonic-based ship draft detection system according to claim 3, characterized in that: The two groups of lifting blocks (23) are controlled by the control machine (1) to synchronously control the servo motor (21), so that the ultrasonic emission matrix (3) and the ultrasonic receiving matrix (4) on one side are synchronously raised and lowered, and the ultrasonic emission matrix (3) and the ultrasonic receiving matrix (4) are always in the same horizontal plane.

5. The ultrasonic-based ship draft detection system according to claim 1, characterized in that: The upper and lower ends of the inner side of the inner connecting cover (75) are respectively installed with sealing disks (751); the upper surface of the sealing disk (751) is penetrated with an engaging hole for meshing with the spiral rod (22); a plurality of groups of clamping blocks B (752) are fixedly installed in an annular distribution on the upper surface of the inner connecting cover (75); and upright brushes (753) are evenly distributed and installed in the inner cavity of the inner connecting cover (75); the upright brushes (753) are used to clean dirt attached to the spiral rod (22) on the bottom surface of the water.

6. The ultrasonic-based ship draft detection system according to claim 5, characterized in that: The trigger control component (74) comprises a mounting control frame (741) arranged inside the middle connection cover (73) and movably mounted at the upper and lower ends; two groups of holding rods A (742) are fixedly and symmetrically connected to the inner side of the upper end of the mounting control frame (741); two groups of holding rods B (744) are symmetrically and fixedly connected to the outer side of the lower end of the mounting control frame (741); a rotating wheel (743) is rotatably mounted on the top contact end of the mounting control frame (741); and the holding rods A (742) are movably engaged between the two groups of holding blocks B (752).

7. The ultrasonic-based ship draft detection system according to claim 6, characterized in that: The one-way braking component (72) comprises a bevel gear (721) fixedly mounted on the outer surface of the middle connecting cover (73); a connecting block (722) is arranged on one side of the bevel gear (721); a braking tooth (723) is fixedly arranged on one side of the connecting block (722); the braking tooth (723) is movably meshed with the bevel gear (721); a rotating connecting column (724) is rotatably connected to one end of the connecting block (722); mounting blocks (726) are rotatably mounted on both ends of the rotating connecting column (724); a torsion spring (725) is sleeved on the surface of the rotating connecting column (724) between the connecting block (722) and the mounting block (726); the two ends of the torsion spring (725) are respectively fixedly connected to one side of the connecting block (722) and the mounting block (726); the initial elastic potential energy of the torsion spring (725) enables the braking tooth (723) to always fit with the bevel gear (721).

8. The ultrasonic-based ship draft detection system according to claim 7, characterized in that: Two groups of push plates (711) are fixedly mounted on one side of the external connection cover (71), and the two groups of push plates (711) form an angle of ninety degrees. A plurality of groups of clamping blocks A (712) are fixedly mounted in an annular distribution on the lower surface of the external connection cover (71), and the clamping rod B (744) is movably clamped between the two groups of clamping blocks A (712). The clamping connection between the clamping rod B (744) and the clamping block A (712) and the clamping connection between the clamping rod A (742) and the clamping block B (752) are affected by the length of the mounting control frame (741), and can only satisfy one condition at the same time.

Images