Weather vane type sideslip angle sensor

Abstract

The utility model belongs to the technical field of sensors, and discloses a weather vane type sideslip angle sensor, which comprises a cross rod, the cross rod comprises a first cross rod and a second cross rod, the first cross rod is connected with the second cross rod in a matching way, the end part of the first cross rod is provided with a blade, and the end part of the second cross rod is provided with a blade; a first connecting hole is formed in the position, close to the first cross rod, of the second cross rod in the radial direction, and the weights of the two sides of the cross rod are the same with the first connecting hole as the boundary. A first connecting end part is arranged at the top of the rotating shaft, and the first connecting end part is embedded into the first connecting hole and is fixedly connected with the rotating shaft and the cross rod; and the angle sensing element is connected with the bottom of the rotating shaft to obtain the rotating angle of the rotating shaft. According to the utility model, the cross rods comprise the first cross rod and the second cross rod, so that the mass balancing of the weather vane type sideslip angle sensor is facilitated, the gravity center is always on the rotating shaft, the error of the rotating angle caused by the dead weight of the weather vane blade is avoided, and the test precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sensor technical field relates to a wind vane type sideslip angle sensor. BACKGROUND

[0002] Sideslip angle is the angle between the symmetry plane of the aircraft and the direction of the relative airflow, and is an important state parameter of aircraft flight mechanics. Current sideslip angle sensors can be divided into mechanical and aerodynamic types. Mechanical types mainly use the angle of rotation of the probe to obtain the size of the sideslip angle, including wind vane sensors and zeroing differential pressure sensors. Aerodynamic sensors obtain sideslip angle information through pressure information measured during flight, including differential pressure ratio sensors.

[0003] With the continuous development of aviation technology, the measurement of sideslip angle plays an important role. Advanced high-performance aircraft need to be able to fly at a larger angle range, with higher requirements for working conditions, cost, and maintenance. However, existing wind vane sideslip angle sensors generally have low test precision and short service life.

[0004] Therefore, there is an urgent need in the field for a wind vane sideslip angle sensor to solve the above technical problems. SUMMARY

[0005] Therefore, the purpose of the utility model is to solve the above problems and provide a wind vane sideslip angle sensor, comprising:

[0006] A crossbar, the crossbar includes a first crossbar and a second crossbar, the first crossbar and the second crossbar are connected, the first crossbar end is provided with a blade, the second crossbar is provided with a first connecting hole radially near the first crossbar, the crossbar is symmetrical on both sides.

[0007] A shaft, the top of the shaft is provided with a first connecting end, the first connecting end is embedded in the first connecting hole to fixedly connect the shaft and the crossbar.

[0008] An angle sensing element, the angle sensing element is connected to the bottom of the shaft to obtain the rotation angle of the shaft.

[0009] As a further improvement of the utility model, the shaft is externally provided with a heating film and a fixed ring, the bottom of the fixed ring is provided with a first matching part, the top of the heating film is provided with a second matching part, and the first matching part and the second matching part are fixedly connected.

[0010] As a further improvement of the utility model, the heating film is externally provided with a first opening, the heating film is internally provided with a first wire hole and a second wire hole in communication with the first opening, the first wire hole and the second wire hole contain a heating wire core, and the heating wire core is connected with the heating film at the first opening.

[0011] As a further improvement of the utility model, the heating film is externally provided with a second opening, the heating film is internally provided with a second wire hole and a second wire hole in communication with the second opening, the second wire hole is in communication with the first wire hole, the second wire hole is in communication with the second wire hole, the second wire hole and the second wire hole contain the heating wire core, the second opening contains a temperature sensor, and the temperature sensor is connected with the heating wire core.

[0012] As a further improvement of the utility model, the blade surface is attached with a hydrophobic material.

[0013] As a further improvement of the utility model, the heating film is externally provided with a shell, the fixed ring bottom is provided with a fixed groove, and the shell end is embedded in the fixed groove and connected with the fixed ring.

[0014] As a further improvement of the utility model, the fixed ring is in the shape of a ladder, and the diameter of the fixed ring close to one end of the horizontal rod is smaller than the diameter of the fixed ring away from the other end of the horizontal rod.

[0015] As a further improvement of the utility model, the first horizontal rod is provided with a connecting groove facing the second horizontal rod, the second horizontal rod is provided with a connecting protrusion matched with the connecting groove, the connecting groove is radially provided with a first fixing hole, the connecting protrusion is provided with a second fixing hole corresponding to the first fixing hole, and the first fixing hole and the second fixing hole are internally provided with a first fixing member.

[0016] As a further improvement of the utility model, the first connecting end is radially provided with a third fixing hole, the second horizontal rod is provided with a fourth fixing hole corresponding to the third fixing hole, and the third fixing hole and the fourth fixing hole are internally provided with a second fixing member.

[0017] As a further improvement of the utility model, the angle sensing element is externally provided with a fixing seat, the fixing seat is internally provided with a fixing plate, and the fixing plate is fixedly connected with the heating film.

[0018] The technical effect of the utility model is: compared with the prior art, the utility model provides a wind vane type sideslip angle sensor, the utility model discloses through setting up the cross bar includes first cross bar and second cross bar, the quality of the wind vane type sideslip angle sensor is balanced, the gravity center is always on the pivot, avoids the error caused to the rotation angle because of the self weight problem of wind vane blade, promotes the test precision, the heating film and the fixed ring are arranged outside the pivot, effectively avoid the water mist to enter the pivot inside, influence the circuit structure inside the wind vane type sideslip angle sensor, promote the safety performance, the hydrophobic material is attached to the blade surface and is arranged, effectively reduce the water icing of the blade surface and influence the self-balancing structure of the wind vane type sideslip angle sensor, promote the reliability of the wind vane type sideslip angle sensor. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will be to the embodiment or prior art description needed to use the drawing briefly introduced, obviously, below description in the drawing is only a part of the embodiment of the utility model, not all the embodiments, for the ordinary skilled person in the art, under the premise of not paying the creative labor, according to these drawings, other drawings obtained, all belong to the protection scope of the utility model.

[0020] Figure 1 It is a perspective view of the wind vane type sideslip angle sensor provided by the utility model embodiment.

[0021] Figure 2 It is an exploded view of the wind vane type sideslip angle sensor provided by the utility model embodiment.

[0022] Figure 3 It is a perspective view of the pivot provided by the utility model embodiment.

[0023] Figure 4 It is a rear view of the wind vane type sideslip angle sensor provided by the utility model embodiment.

[0024] Figure 5 It is Figure 4 The section view at B-B.

[0025] Wherein, 10 is a cross bar, 11 is a first cross bar, 111 is a blade, 112 is a connecting groove, 1121 is a first fixing hole, 12 is a second cross bar, 121 is a first connecting hole, 122 is a connecting protrusion, 1221 is a second fixing hole, 1222 is a first fixing piece, 123 is a fourth fixing hole 223, 1231 is a second fixing piece.

[0026] 20 is a rotating shaft, 21 is a first connecting end, 211 is a third fixing hole, 22 is a heating film, 221 is a second matching part, 222 is a first opening, 2221 is a first wire hole, 2222 is a first wire inlet hole, 2223 is a heating wire core, 223 is a second opening, 2231 is a second wire hole, 2232 is a second wire inlet hole, 2233 is a temperature sensor, 224 is a shell, 23 is a fixing ring, 231 is a fixing groove, 231 is a first matching part; 30 is an angle sensing element, 31 is a fixing seat, 32 is a fixing plate. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will make further detailed description to the utility model combining with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0028] In order to make the description of the present disclosure more detailed and complete, the following describes the embodiments of the present utility model and specific examples; But this is not the only form of implementation or use of the specific embodiments of the utility model. The embodiments include the features of the specific embodiments and the method steps and order used to construct and operate these specific embodiments. However, other specific embodiments can also be used to achieve the same or equivalent functions and step sequences. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present utility model.

[0029] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the terms "first", "second" and the like in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein.

[0031] In the description of the utility model, the terms "front", "back", "top", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is merely for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0032] Please refer to Figures 1-5 An embodiment of the utility model provides a wind vane type sideslip angle sensor to solve the problem of low test precision and low service life of the existing wind vane type sideslip angle sensor.

[0033] Specifically, please refer to Figure 1 A perspective view of a wind vane type sideslip angle sensor provided by the embodiment of the utility model, Figure 2 An exploded view of a wind vane type sideslip angle sensor provided by the embodiment of the utility model, the utility model provides a wind vane type sideslip angle sensor, which comprises a crossbar 10, a rotating shaft 20 and an angle sensing element 30, the crossbar 10 comprises a first crossbar 11 and a second crossbar 12, the first crossbar 11 and the second crossbar 12 are connected in cooperation, the first crossbar 11 is provided with a blade 111 at the end, by arranging the blade 111 at the end of the first crossbar 11, the change of wind force is realized quickly, the crossbar 10 rotates rapidly, and the direction of wind is fed back in time. The second crossbar 12 is provided with a first connecting hole 121 radially near the first crossbar 11, the two sides of the crossbar 10 are the same in weight with the first connecting hole 121 as the boundary; the rotating shaft 20 is provided with a first connecting end 21 at the top, the first connecting end 21 is embedded in the first connecting hole 121 to fixedly connect the rotating shaft 20 and the crossbar 10, by embedding the first connecting end 21 at the top of the rotating shaft 20 in the first connecting hole 121 of the second crossbar 12, the firm connection of the crossbar 10 and the rotating shaft 20 is ensured, and the stability of the overall structure is improved; the angle sensing element 30 is connected with the bottom of the rotating shaft 20 to obtain the rotation angle of the rotating shaft 20, preferably, the angle sensing element 30 is a Hall element. By arranging that the crossbar 10 comprises the first crossbar 11 and the second crossbar 12, the mass balance of the wind vane type sideslip angle sensor is facilitated, the center of gravity is ensured to be always on the rotating shaft 20, the influence of external factors on the measurement result is reduced, the error of the rotation angle caused by the self-weight problem of the wind vane blade 111 is avoided, and the test precision of the wind vane type sideslip angle sensor is improved.

[0034] As a further improvement of the utility model, the shaft 20 is externally sleeved with a heating film 22 and a fixed ring 23, the fixed ring 23 is provided with a first matching part 232 at the bottom, the heating film 22 is provided with a second matching part 221 at the top, and the first matching part 232 is fixedly connected with the second matching part 221. By externally sleeving the heating film 22 on the shaft 20, heating can be realized in a low-temperature environment, the surface of the shaft 20 is prevented from icing or frosting, the wind vane side slip angle sensor is ensured to work normally not only in a conventional environment but also in an extreme climate condition (such as a high-cold area), the application range is expanded, the heating film 22 is fixed by the fixed ring 23, the heating film 22 is ensured to be tightly attached to the shaft 20, the heating efficiency is improved, the first matching part 232 is arranged at the bottom of the fixed ring 23, the second matching part 221 is arranged at the top of the heating film 22, the first matching part 232 is fixedly connected with the second matching part 221, the sealing of the heating film 22 and the fixed ring 23 is ensured, water mist is effectively prevented from entering the inside of the shaft 20, the circuit structure inside the wind vane side slip angle sensor is affected, the stable combination of the heating film 22 and the fixed ring 23 is ensured, loosening or falling caused by vibration or external force is prevented, and the service life of the wind vane side slip angle sensor is prolonged.

[0035] As a further improvement of the utility model, please see Figure 3 , the heating film 22 is externally provided with a first opening 222, the heating film 22 is internally provided with a first wiring hole 2221 and a first wire inlet hole 2222 in communication with the first opening 222, the first wiring hole 2221 and the first wire inlet hole 2222 contain a heating wire core 2223, and the heating wire core 2223 is connected with the heating film 22 at the first opening 222. By arranging the first opening 222 outside the heating film 22, the heating wire core 2223 can be conveniently led out and connected, by arranging the first wiring hole 2221 and the first wire inlet hole 2222 inside the heating film 22 in communication with the first opening 222, the two holes are used for containing the heating wire core 2223, the reasonable arrangement of the heating wire core 2223 inside the heating film 22 is ensured, the heating wire core 2223 is connected with the heating film 22 at the first opening 222, the electrical connection between the heating wire core 2223 and the heating film 22 is ensured to be stable and reliable, and the risk of poor contact is reduced. By the design of the first wiring hole 2221 and the first wire inlet hole 2222, the heating wire core 2223 can be uniformly distributed inside the heating film 22, the surface temperature distribution of the heating film 22 is ensured to be uniform, the heating efficiency is improved, the exposed part of the heating wire core 2223 is reduced by the reasonable wiring design, heat loss is reduced, energy utilization rate is improved, if the heating wire core 2223 needs to be replaced or repaired, operation can be performed through the first opening 222, and the maintenance process is simplified.

[0036] As a further improvement of the utility model, the heating film 22 is externally provided with a second opening 223, the heating film 22 is internally provided with a second wiring hole 2231 and a second wire inlet hole 2232 in communication with the second opening 223, the second wiring hole 2231 is in communication with the first wiring hole 2221, the second wire inlet hole 2232 is in communication with the first wire inlet hole 2222, the second wiring hole 2231 and the second wire inlet hole 2232 internally contain the heating wire core 2223, the second opening 223 internally contains a temperature sensor 2233, and the temperature sensor 2233 is connected to the heating wire core 2223. By internally containing the temperature sensor 2233 in the second opening 223, the temperature sensor 2233 is connected to the heating wire core 2223, the temperature of the heating film 22 is monitored in real time, the heating and deicing of the connection between the rotating shaft 20 and the horizontal rod 10 are realized, the influence of icing on the rotation of the wind cone is prevented, the temperature of the heating film 22 is accurately controlled through the temperature sensor 2233, the situation of insufficient temperature is avoided, the heating film 22 is ensured to operate within the optimal working range, and the start and end of heating are accurately controlled.

[0037] As a further improvement of the utility model, the surface of the blade 111 is attached with a hydrophobic material. By attaching the surface of the blade 111 with the hydrophobic material, the hydrophobic material attached to the surface of the blade 111 can reduce the adhesion of water droplets, making the water droplets more easily slide off, thereby preventing the surface of the blade 111 from icing or frosting, significantly improving the anti-icing and defrosting capability of the wind cone side slip angle sensor, effectively reducing the influence of water icing on the self-balancing structure of the wind cone side slip angle sensor due to the water attached to the surface of the blade 111, ensuring the normal operation of the sensor in cold weather, avoiding the coverage of the blade 111 by water droplets or snow, affecting the measurement accuracy of the sensor, and improving the reliability of the wind cone side slip angle sensor. At the same time, the hydrophobic material can prevent water from being attached to the surface of the blade 111 for a long time, reduce the possibility of corrosion, and prolong the service life of the wind cone side slip angle sensor.

[0038] As a further improvement of the utility model, please refer to Figures 4-5 , the heating film 22 is externally provided with a shell 224, the bottom of the fixed ring 23 is provided with a fixed groove 231, and the end of the shell 224 is embedded in the inside of the fixed groove 231 and connected with the fixed ring 23. By externally sleeving the shell 224 on the heating film 22, the shell 224 can provide additional physical protection to prevent damage to the heating film 22 by the external environment, the bottom of the fixed ring 23 is provided with the fixed groove 231, the end of the shell 224 is embedded in the inside of the fixed groove 231, the tight connection between the shell 224 and the fixed ring 23 is ensured, the stability of the overall structure is improved, the sealing design of the shell 224 can prevent water mist from entering, the safety of the circuit structure inside the sensor is ensured, and the normal operation of the wind cone side slip angle sensor is ensured.

[0039] As a further improvement of the utility model, the fixed ring 23 is ladder-shaped, and the diameter of the fixed ring 23 near one end of the horizontal rod 10 is smaller than the diameter of the fixed ring 23 away from the other end of the horizontal rod 10. By setting the fixed ring 23 as ladder-shaped, the diameter of the fixed ring 23 near one end of the horizontal rod 10 is smaller than the diameter of the fixed ring 23 away from the other end of the horizontal rod 10, which significantly improves the stability of the rotating shaft 20 in the fixed ring 23, and the larger end can provide more contact area, enhancing the connection strength of the fixed ring 23 and the shell 224.

[0040] As a further improvement of the utility model, the first horizontal rod 11 is provided with a connecting groove 112 facing the second horizontal rod 12, the second horizontal rod 12 is provided with a connecting protrusion 122 matched with the connecting groove 112, the connecting groove 112 is radially provided with a first fixing hole 1121, the connecting protrusion 122 is provided with a second fixing hole 1221 corresponding to the first fixing hole 1222, and the first fixing hole 1222 and the second fixing hole 1221 are provided with a first fixing member 1222. By fixing the connecting groove 112 and the connecting protrusion 122 through the first fixing member 1222 in the first fixing hole 1121 and the second fixing hole 1221, the connection between the first horizontal rod 11 and the second horizontal rod 12 can be ensured to be firm and reliable, preventing loosening or falling off. The design of the connecting groove 112 and the connecting protrusion 122 enables the first horizontal rod 11 and the second horizontal rod 12 to be quickly aligned and connected, simplifying the installation process. The design can adapt to different lengths of the first horizontal rod 11 and the second horizontal rod 12, and through mass balancing, the center of gravity of the horizontal rod 10 is always on the rotating shaft 20, improving the test accuracy of the side slip angle sensor.

[0041] As a further improvement of the utility model, the first connecting end portion 21 is radially provided with a third fixing hole 211, the second horizontal rod 12 is provided with a fourth fixing hole 123 corresponding to the third fixing hole 211, and the third fixing hole 211 and the fourth fixing hole 123 are provided with a second fixing member 1231. By the second fixing member 1231 in the third fixing hole 211 and the fourth fixing hole 123, the connection between the first connecting end portion 21 and the second horizontal rod 12 can be ensured to be firm and reliable, preventing loosening or falling off. If it is necessary to disassemble or replace parts, the first connecting end portion 21 and the second horizontal rod 12 can be easily separated by disassembling the second fixing member, facilitating maintenance and repair.

[0042] As further improvement of the utility model, the angle sensing element 30 is externally provided with a fixing seat 31, the fixing seat 31 is internally provided with a fixing plate 32, the fixing plate 32 is fixedly connected with the heating film 22, the fixing seat 31 provides additional physical protection for the angle sensing element 30 by being externally provided with the fixing seat 31, prevents the damage of external environment to the angle sensing element 30, the fixing plate 32 is fixedly connected with the heating film 22 by being arranged in the fixing seat 31, and the stable connection between the heating film 22 and the angle sensing element 30 is ensured.

[0043] The technical features of the above embodiments can be combined arbitrarily, and to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present application.

[0044] The above embodiments only express the preferred implementation of the utility model, the description is more specific and detailed, but it should not be understood as the limitation of the patent application scope. It should be pointed out that for ordinary skilled person in the art, on the premise of not departing from the utility model concept, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A wind vane side-slip angle sensor, characterized by The utility model relates to a kind of heating film and angle sensor, including: Crossbar, the crossbar includes first crossbar and second crossbar, the first crossbar and the second crossbar are connected, the first crossbar end is provided with vane, the second crossbar is provided with first connecting hole along radial direction close to the first crossbar, with the first connecting hole as boundary, the both sides of the crossbar are same in weight; Rotating shaft, the rotating shaft top is provided with first connecting end, the first connecting end is embedded in the first connecting hole and is fixedly connected the rotating shaft and the crossbar; Angle sensing element, the angle sensing element is connected with the bottom of the rotating shaft to obtain the rotating angle of the rotating shaft.

2. The vane-type side-slip angle sensor according to claim 1, characterized by: The rotating shaft is externally sleeved with a heating film and a fixing ring, the fixing ring bottom is provided with a first matching part, and the heating film top is provided with a second matching part, and the first matching part is fixedly connected with the second matching part.

3. The vane-type side-slip angle sensor according to claim 2, characterized by: The heating film is externally provided with a first opening, and the heating film is internally provided with a first wire hole and a first wire inlet hole in communication with the first opening.

4. The vane-type side-slip angle sensor according to claim 3, characterized by: The heating film is externally provided with a second opening, and the heating film is internally provided with a second wire hole and a second wire inlet hole in communication with the second opening.

5. The vane-type side-slip angle sensor according to claim 1, characterized by: The second wire hole is in communication with the first wire hole, and the second wire inlet hole is in communication with the second wire inlet hole.

6. The vane-type side-slip angle sensor according to claim 4, characterized by: The second wire hole and the second wire inlet hole are internally provided with the heating wire core.

7. The vane-type side-slip angle sensor according to claim 2, characterized by: The vane surface is attached with a hydrophobic material.

8. The vane-type side-slip angle sensor according to claim 1, characterized by: The heating film is externally sleeved with a shell, and the fixing ring bottom is provided with a fixing groove.

9. The vane-type side-slip angle sensor according to claim 5, characterized by: The shell end is embedded in the fixing groove inside and connected with the fixing ring.

10. The vane-type side-slip angle sensor according to claim 2, characterized by: The fixing ring is trapezoidal, and the diameter of the fixing ring close to one end of the crossbar is smaller than the diameter of the fixing ring away from the crossbar. The first crossbar is provided with a connecting groove towards the second crossbar, and the second crossbar is provided with a connecting protrusion matched with the connecting groove. The connecting groove is radially provided with a first fixing hole, and the connecting protrusion is provided with a second fixing hole corresponding to the first fixing hole. The first fixing hole and the second fixing hole are internally provided with a first fixing part. The first connecting end is radially provided with a third fixing hole, and the second crossbar is provided with a fourth fixing hole corresponding to the third fixing hole. The angle sensing element is externally provided with a fixing seat, and the fixing seat is internally provided with a fixing plate. The fixing plate is fixedly connected with the heating film.

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