Hydrofoil lifting height detection device of hydrofoil ship

Abstract

The utility model discloses a hydrofoil lifting height detection device of a hydrofoil ship, which relates to the technical field of hydrofoil ships and comprises a wing column, a clamping mechanism and a detection mechanism. The wing column is arranged in the clamping mechanism, and the detection mechanism is arranged between the wing column and the clamping mechanism; wherein the detection mechanism comprises a hall plate and a pair of magnets; the clamping mechanism is arranged on the wing column, the Hall plate is arranged in the clamping mechanism, the two magnets are respectively arranged in the wing column, the Hall plate is arranged between the two magnets, the magnets and the linear Hall sensor are utilized, the angle is calculated by passing through the linear Hall through NS poles of the magnets and utilizing the principle of a phase-locked loop, and therefore the position of a hole site is recorded. The problems that contact type and photoelectric type in-place switches are prone to interference and poor in moisture resistance and salt fog resistance are effectively solved, and the reliability of detection of the lifting height of the hydrofoil is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydrofoil ship, more particularly to a hydrofoil lifting height detection device of hydrofoil ship. BACKGROUND

[0002] Modern high-performance hydrofoil ship is a kind of ocean carrier that has developed rapidly in recent years, and is the product of the combination of marine technology and aviation technology. When the hydrofoil ship sails, the water dynamic lift generated by the hydrofoil will lift part or all of the ship out of the water, which has excellent drag reduction and energy increase. Especially the hydrofoil ship using automatic control hydrofoil system has excellent seakeeping and navigability.

[0003] When the hydrofoil ship passes through water area with shallow depth or is maintained on shore, the hydrofoil needs to be lifted to a certain height to avoid damage to the hydrofoil and facilitate transportation, which requires the vertical fin column combined with the hull to move up and down to realize the lifting of the hydrofoil, and after reaching the predetermined position, the vertical fin column needs to be fixed by using the way of bolt and clamping block to ensure the reliable connection of the hydrofoil and the hull.

[0004] The traditional hydrofoil ship usually uses a motor installed on a fixed surface to generate lifting power, and uses the motor to drag a steel wire rope to lift the hydrofoil. The specific distance of the lifting displacement of the hydrofoil is usually directly corresponding to the stroke of the motor. The hole position is remembered by calibration to realize the clamping of the bolt. The advantage of this method is that the lifting of the hydrofoil can be realized by simple mechanical structure, but the existence of reliability problems and manufacturing consistency deviation affects the safety and stability of the hydrofoil ship.

[0005] The existing technical solution: the existing hydrofoil ship usually uses a mechanical lifting system based on a motor to control the lifting height of the hydrofoil by the stroke of the motor. In actual operation, the corresponding relationship between the target up and down height position of the hydrofoil and the stroke of the motor needs to be calibrated in advance. At the same time, in order to ensure the stability and safety of the hydrofoil during lifting, the hydrofoil needs to be fixed at the predetermined position by using a bolt.

[0006] The prior art problem: although the existing hydrofoil lifting control system can meet the use demand to a certain extent, the reliability problem and use consistency deviation seriously limit its application range and use effect. First, since the motor stroke and the plug position are pre-calibrated, if the transmission wire rope is deformed or the next ring is pressed on the reel during use, that is, the length of the rope changes, the actual hydrofoil lifting height and the motor stroke will no longer correspond, and the hydrofoil lifting will not reach the target position. The accuracy requirement of the hole position of the fixed clamping block and the plug is very high, at this time the plug cannot enter the hole position, which causes the hydrofoil column to be unable to be clamped, thereby affecting the normal operation of the hydrofoil ship.

[0007] In addition, some hydrofoil lifting devices use touch switches to detect the arrival of the hydrofoil at the target position, but in the use environment of high humidity, high salt fog and large vibration in the ocean, it is difficult to guarantee the reliability and service life of the touch switch, causing a great safety hazard.

[0008] In addition, due to the lack of effective monitoring and feedback mechanism, once a problem occurs, it is difficult to discover and correct in time, further increasing the risk of hydrofoil ship operation.

[0009] Based on the above problems, we provide a hydrofoil lifting height detection device for a hydrofoil ship. The utility model contents

[0010] In order to solve the problems in the above background art, the utility model provides a hydrofoil lifting height detection device for a hydrofoil ship, which adopts a detection scheme with a sensor, uses a magnet and a linear hall sensor, passes through the NS pole of the magnet, uses the principle of phase-locked loop, calculates the angle, records the position of the hole, and avoids the problems of contact type and photoelectric type in-place switch being easily disturbed, poor moisture resistance and salt fog resistance, and improves the reliability of hydrofoil lifting height detection.

[0011] The utility model provides a hydrofoil lifting height detection device for a hydrofoil ship adopts the following technical scheme:

[0012] A hydrofoil lifting height detection device for a hydrofoil ship, comprising a wing column, a clamping mechanism and a detection mechanism, the wing column is arranged in the clamping mechanism, the detection mechanism is arranged between the wing column and the clamping mechanism, wherein the detection mechanism comprises a hall plate and a pair of magnets, the hall plate is arranged in the clamping mechanism, two magnets are arranged in the wing column respectively, and the hall plate is arranged between the two magnets.

[0013] Preferably, two linear halls are arranged on the hall plate for detecting the magnetic field intensity.

[0014] Preferably, the hall plate is arranged in the clamping mechanism by glue pouring.

[0015] Preferably, two linear hall sensors, halla and hallb, are further arranged on the hall plate.

[0016] Preferably, the halla and the hallb are distributed along a vertical direction, and a center distance between the halla and the hallb is x1, and the x1 and a single period distance x2 of a periodic change of a magnetic field intensity of a to-be-detected magnet satisfy a relationship x1=(1 / 4)x2.

[0017] In summary, the utility model has the following beneficial technical effects:

[0018] By adopting the detection scheme with sensors, the NS poles of the magnet pass through the linear hall by using the magnet and the linear hall sensor, the phase-locked loop principle is used to calculate the angle, thereby recording the position of the hole position, and by the structure design, the problem that the contact type and photoelectric type in-place switches are easily disturbed, are not resistant to moisture, and are poor in salt fog resistance is effectively avoided, and the reliability of the hydrofoil lifting height detection is improved.

[0019] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent to those skilled in the art by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structure schematic view of a hydrofoil lifting height detection device of a hydrofoil ship in an embodiment of the utility model;

[0021] Figure 2 is a structure schematic view of the inside of a hydrofoil lifting height detection device of a hydrofoil ship in an embodiment of the utility model;

[0022] Figure 3 is a structure schematic view of a detection mechanism in an embodiment of the utility model;

[0023] Figure 4 is a magnet magnetic field distribution schematic view in an embodiment of the utility model;

[0024] Figure 5 is a hall signal and angle corresponding relationship diagram in an embodiment of the utility model;

[0025] Figure 6 is a block diagram of a phase-locked loop calculating a hall angle in an embodiment of the utility model;

[0026] Figure 7 The phase-locked loop equivalent block diagram in the embodiment of the utility model.

[0027] Mark explanation: 1, wing column, 2, hall board, 3, magnet. DETAILED DESCRIPTION

[0028] The following will be described in detail in combination with the accompanying Figures 1 to 7 The utility model will be further explained in detail.

[0029] It should be pointed out that the drawings are schematic, and are not shown in proportion. In order to the clarity and convenience in the drawing, the relative size and proportion of the part shown in the drawing are exaggerated or reduced in size and are shown, and any size is only exemplary, but not limiting. In addition, the same reference signs are used for the same structure, element or accessory appearing in more than two drawings to embody similar features.

[0030] The utility model embodiment discloses a hydrofoil lifting height detection device of hydrofoil ship. Refer to Figures 1 to 3 A hydrofoil lifting height detection device of hydrofoil ship, including wing column 1, clamping mechanism and detection mechanism, wing column 1 sets up in clamping mechanism, and detection mechanism sets up between wing column 1 and clamping mechanism, wherein, detection mechanism includes hall board 2 and a pair of magnet 3, hall board 2 sets up in clamping mechanism, and two magnet 3 respectively sets up in wing column 1, and hall board 2 is arranged between two magnet 3.

[0031] Specifically, two linear halls on hall board 2 are used to detect the magnetic field intensity.

[0032] As shown in Figure 3 Hall board 2 is set in clamping mechanism by pouring glue.

[0033] As shown in Figure 3 Hall board 2 is also provided with two linear Hall sensors, which are halla and hallb respectively.

[0034] As shown in Figure 3 Halla and hallb are distributed along the vertical direction, and the center distance between the two is x1, and x1 and the single period distance x2 of the periodic variation of the magnetic field intensity of the magnet 3 to be measured satisfy the relationship x1=(1 / 4)x2.

[0035] As shown in Figure 4 The NS pole direction of magnet 3 is arranged along the vertical direction, and then the signal waveform detected by halla and hallb is as shown in Figure 5As shown, because the x1 distance is 1 / 4 of x2, the hallb signal will be 90 degrees out of phase with halla, i.e.

[0036] It is worth noting that the real hall signal is not the ideal shown in the figure, and noise is superimposed on the signal.

[0037] Therefore, if the arctangent function is directly used to solve the angle, the division operation of the function will directly introduce noise into the result, thereby causing a large angle estimation deviation and affecting the correspondence between the angle and the actual mechanical position, which may cause the clamping structure to malfunction. Figure 6

[0038] When the estimated angle is close to the real angle, i.e. it can be considered that holds, and according to Figure 5 the following relationship can be obtained:

[0039]

[0040] where k is the signal amplitude of the hall measurement.

[0041] At this time, Figure 6 the equivalent block diagram is shown in Figure 7 .

[0042] According to Figure 6 , the transfer function from θ to φ can be obtained, i.e.

[0043]

[0044] where, ω n determines the bandwidth of the PI regulator, and according to the automatic control theory, the PI regulator parameters of the phase-locked loop can be preliminarily designed, thereby obtaining the ideal estimated angle

[0045] The detection scheme of the sensor is adopted, the magnet and the linear hall sensor are used, the NS pole of the magnet passes through the linear hall, the principle of the phase-locked loop is used, the angle is calculated, and the position of the hole position is recorded.This scheme avoids the problem that the contact type and photoelectric type in-place switches are easily disturbed, are not resistant to moisture, and have poor salt fog resistance, and improves the reliability of the hydrofoil lifting height detection.

[0046] ​The sensor can effectively reduce the problem that the plug cannot enter the hole position due to manufacturing consistency deviation and use aging. By accurately measuring the hydrofoil lifting height through the sensor, it can be ensured that the plug accurately enters the hole position, thereby improving the manufacturing consistency and operation stability of the hydrofoil ship;

[0047] The sensor in the scheme can monitor the hydrofoil lifting height in real time, and once an abnormal condition occurs, it can be found and fed back in time, so that measures can be taken in time to avoid accidents. This real-time monitoring and feedback mechanism further improves the safety and stability of the hydrofoil ship;

[0048] The sensor is used for accurate measurement, which can realize high-precision control of the hydrofoil lifting height and improve the control performance and operation efficiency of the hydrofoil ship.

[0049] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings, and the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the mechanical parts and equipment adopt conventional types in the prior art, and the circuit connection adopts conventional connection mode in the prior art, which will not be described in detail here.

[0050] In the description of the utility model, the terms "first" and "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. The meaning of "multiple" is two or more, unless otherwise specifically limited.

[0051] In the utility model, unless otherwise specifically defined and limited, the terms "installation", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements or the interaction between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0052] In the utility model, unless another definite provision and limitation, first feature is on second feature "on" or "under" can be first and second feature direct contact, or first and second feature indirect contact through intermediate medium. Moreover, first feature is on second feature "on", "above" and "on" can be first feature is on second feature directly above or obliquely above, or just indicate first feature horizontal height is higher than second feature. First feature is on second feature "under", "below" and "under" can be first feature is on second feature directly below or obliquely below, or just indicate first feature horizontal height is less than second feature.

[0053] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0054] The utility model discloses the embodiment figure in, only relate to the structure of the disclosure embodiment, other structures can refer to the usual design, under the condition of not conflict, the same embodiment and different embodiments of the utility model can be combined mutually.

[0055] Although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or part of the technical features can be replaced, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A device for detecting the hydrofoil lifting height of a hydrofoil boat, characterized in that, The utility model relates to a wing post (1), clamping mechanism and detection mechanism, the wing post (1) is arranged in the clamping mechanism, the detection mechanism is arranged between the wing post (1) and the clamping mechanism, wherein, the detection mechanism includes: hall board (2) and a pair of magnet (3), the hall board (2) is arranged in the clamping mechanism, two magnet (3) are arranged in the wing post (1) respectively, and the hall board (2) is arranged between two magnet (3). The hall board (2) has two linear halls on it for detecting the magnetic field intensity. The hall board (2) is arranged in the clamping mechanism by pouring glue. The hall board (2) is also provided with two linear Hall sensors, halla and hallb respectively. The halla and hallb are distributed in the vertical direction, and the center distance between them is x1, which satisfies the relationship x1=(1 / 4)x2, where x2 is the single period distance of the periodic change of the magnetic field intensity of the magnet (3) to be measured. ​ 2. A hydrofoil lift height detecting device for a hydrofoil craft according to claim 1, characterized in that: ​ 3. A hydrofoil lift height detecting device for a hydrofoil craft according to claim 1, characterized in that: ​ 4. The hydrofoil lift height detecting device for a hydrofoil craft according to claim 1, characterized in that: ​ 5. A hydrofoil lift height detecting device for a hydrofoil craft according to claim 4, characterized in that: ​

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