Sensor for measuring tension of parachute cable

Abstract

The utility model belongs to the technical field of sensors, and particularly relates to a sensor for measuring the tension of a parachute cable, which comprises an H-shaped main body and a plurality of sensors, the four strain gauges are symmetrically distributed in the square hole in pairs and are used for sensing the deformation of the H-shaped main body and converting the deformation into electric signals to be output; the wireless transmitting circuit board is arranged in the square hole and is in wired connection with the strain gauges; wherein the wireless transmitting circuit board is suitable for receiving an electric signal output by the strain gauge, transmitting the electric signal after amplification and modulation, and transmitting the electric signal to a receiving end; according to the sensor for measuring the tensile force of the parachute cable, through a wireless transmission mode, real-time remote transmission of data is achieved, the test period is shortened, the test efficiency is improved, and the sensor can be used for measuring the tensile force of the parachute cable in a wireless transmission mode. And the technical development of the parachute, cargo transportation and personnel safety can be greatly promoted.

Description

Technical Field

[0001] This utility model belongs to the field of sensor technology, specifically relating to a sensor for measuring the tension of parachute cables. Background Technology

[0002] In today's military and civilian fields, the use of aircraft to transport cargo or large equipment via parachutes is increasingly common. However, a significant problem exists during the descent of cargo or equipment carried by parachutes. When the cargo or equipment is heavy, if it is not possible to accurately determine whether the weight is evenly distributed across the parachute lines during the descent, especially when the cargo is severely unbalanced and the center of gravity is concentrated on one or two lines, the lines may break, leading to a serious accident involving the crash of the cargo and equipment. Therefore, sensors are needed to measure the tension of the parachute cables.

[0003] Traditional sensors typically connect strain gauges directly to subsequent conditioning and acquisition circuits via wires. The acquired sensor data is then transmitted to an information processing center for comprehensive analysis. After the parachute lands, the sensor needs to be manually retrieved to retrieve the data. This not only increases operational complexity but also significantly reduces the real-time nature of the data. Furthermore, it makes it impossible to immediately confirm whether the sensor is damaged. If the sensor is damaged after landing, test data will be lost, thus extending the testing cycle.

[0004] Therefore, in order to solve the above problems, it is necessary to design a sensor for measuring the tension of parachute cables. Utility Model Content

[0005] The purpose of this invention is to provide a sensor for measuring the tension of parachute cables, in order to solve the technical problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a sensor for measuring the tension of parachute cables, comprising:

[0007] The H-shaped body includes: a square hole disposed in the middle of the H-shaped body;

[0008] Four strain gauges are symmetrically distributed in pairs inside the square hole to sense the deformation of the H-shaped body and convert the deformation into an electrical signal output.

[0009] The wireless transmission circuit board, housed within a square hole, is wired to each strain gauge;

[0010] The wireless transmitting circuit board is adapted to receive the electrical signal output by the strain gauge, amplify and modulate it, and then transmit it to the receiving end.

[0011] The battery is snapped into the wireless transmitter circuit board and powers the wireless transmitter circuit board.

[0012] Furthermore, the H-shaped main body includes: two pairs of symmetrically arranged connecting parts;

[0013] Each pair of the connecting parts is connected by a pin; wherein

[0014] The pin passes through both connecting parts; and

[0015] The pin is adapted to be connected to the parachute cable.

[0016] Furthermore, a fixing beam is provided in the middle of the square hole; wherein

[0017] The wireless transmission circuit board is mounted on the fixed beam.

[0018] Furthermore, the H-shaped body also includes: mounting portions disposed at both ends of the square hole; wherein

[0019] The mounting section is equipped with a first cover plate.

[0020] Furthermore, the H-shaped body also includes: placement portions disposed on both sides of the H-shaped body; wherein

[0021] Each of the aforementioned placement sections is provided with two strain gauges; and

[0022] The two strain gauges are arranged in opposite directions;

[0023] The placement part communicates with the square hole, and there are four communication points for placing the connection harnesses of the wireless transmission circuit board and each strain gauge respectively.

[0024] Furthermore, the H-shaped body also includes: a placement position disposed at the end of the placement portion; wherein

[0025] The placement position is equipped with a second cover plate.

[0026] The beneficial effects of this utility model are:

[0027] (i) The two ends of the H-shaped body are connected to parachute cables. When the parachute cables are under tension, the H-shaped body will deform. This deformation will be transmitted to the strain gauge, causing the resistance value of the strain gauge to change. After the wireless transmitting circuit board receives the electrical signal output by the strain gauge, it is amplified and modulated, and then transmitted wirelessly to the receiving end. After receiving the data, the receiving end can perform further processing and analysis to obtain the tension information of the parachute cables. Through wireless transmission, real-time remote data transmission is realized, shortening the test cycle and improving test efficiency. This can greatly promote the technological development of parachutes, cargo transportation, and personnel safety.

[0028] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 Explosion of the preferred embodiment of this utility model Figure 1 ;

[0032] Figure 2 This is a perspective view of a preferred embodiment of the fixed beam of this utility model;

[0033] Figure 3 Explosion of the preferred embodiment of this utility model Figure 2 ;

[0034] Figure 4 This is a perspective view of a preferred embodiment of the present invention.

[0035] In the picture:

[0036] H-shaped main body 1, square hole 101, connecting part 102, mounting part 103, placement part 104, placement position 105;

[0037] 2. Strain gauge; 3. Wireless transmission circuit board; 4. Battery; 5. Pin; 6. Fixing beam; 7. First cover plate; 8. Second cover plate. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example 1

[0039] like Figures 1 to 4 As shown, this embodiment provides a sensor for measuring the tension of parachute cables, including:

[0040] The H-shaped body 1 includes: a square hole 101 disposed in the middle of the H-shaped body 1; four strain gauges 2, symmetrically distributed in pairs within the square hole 101, used to sense the deformation of the H-shaped body 1 and convert the deformation into an electrical signal output; a wireless transmission circuit board 3 disposed within the square hole 101 and wiredly connected to each strain gauge 2; wherein the wireless transmission circuit board 3 is adapted to receive the electrical signals output by the strain gauges 2, amplify and modulate them before transmitting them to the receiving end; and a battery 4, snapped into the wireless transmission circuit board 3 and providing power to the wireless transmission circuit board 3; wherein the H-shaped body 1 is made of, but is not limited to, high-strength titanium alloy material with a hardness of HRC42-46, has high overall strength and is lightweight, and will not increase the overall burden on the parachute; by using the battery 4 for power supply and wireless transmission, the sensor's dependence on external power and the use of wires are reduced, improving the sensor's safety and reliability.

[0041] In this embodiment, parachute cables are connected to both ends of the H-shaped body 1. When the parachute cables are under tension, the H-shaped body 1 deforms. This deformation is transmitted to the strain gauge 2, causing a change in the resistance value of the strain gauge 2. After receiving the electrical signal output by the strain gauge 2, the wireless transmitting circuit board 3 amplifies and modulates it before transmitting it wirelessly to the receiving end. After receiving the data, the receiving end can perform further processing and analysis to obtain the tension information of the parachute cables. Through wireless transmission, real-time remote data transmission is achieved, shortening the testing cycle and improving testing efficiency. This can greatly promote the technological development of parachutes, cargo transportation, and personnel safety.

[0042] The H-shaped main body 1 includes: two pairs of symmetrically arranged connecting parts 102; a pin 5 connecting each pair of connecting parts 102; wherein the pin 5 passes through the two connecting parts 102; and the pin 5 is adapted to be connected to the parachute cable; wherein, through the connection of the pin 5 to the parachute cable, the H-shaped main body 1 can uniformly transmit the tension of the parachute to the strain gauge 2, so as to ensure that the sensor can accurately sense the tension change of the parachute cable; the symmetrical design of the connecting parts 102 of the H-shaped main body 1 and the connection method of the pin 5 help to disperse stress and prevent the sensor from being damaged when the tension is too large, thereby improving the durability and reliability of the sensor.

[0043] A fixing beam 6 is provided in the middle of the square hole 101; the wireless transmitting circuit board 3 is mounted on the fixing beam 6; the fixing beam 6 is located in the middle of the square hole 101, providing additional structural support for the H-shaped body 1, which helps to enhance the strength and rigidity of the entire sensor and prevent deformation or damage when subjected to large tensile forces; by setting the fixing beam 6, a mounting platform is provided for the wireless transmitting circuit board 3, so that the wireless transmitting circuit board 3 can be firmly fixed inside the sensor, avoiding displacement or damage during transportation or use.

[0044] The H-shaped main body 1 also includes: mounting portions 103 disposed at both ends of the square hole 101; wherein the mounting portions 103 are provided with a first cover plate 7; wherein the first cover plate 7 is made of, but is not limited to, a high-strength resin material, and protects the wireless transmission circuit board 3 inside the square hole 101 without affecting the wireless signal transmission of the wireless transmission circuit board 3.

[0045] The H-shaped main body 1 further includes: placement portions 104 disposed on both sides of the H-shaped main body 1; wherein each placement portion 104 is provided with two strain gauges 2; and the two strain gauges 2 are arranged in opposite directions; the placement portion 104 is connected to the square hole 101, and there are four connection points for placing the connecting wires of the wireless transmitting circuit board 3 and each strain gauge 2 respectively; wherein the strain gauge 2 is, but is not limited to, a half-bridge resistance strain gauge, and then the half-bridge resistance strain gauges are combined into a Wheatstone bridge to output a voltage signal of MV level; the two strain gauges 2 are pasted in opposite directions in the placement portion 104 to measure the lateral and vertical strain under tensile conditions.

[0046] The H-shaped main body 1 further includes: a placement position 105 disposed at the end of the placement part 104; wherein a second cover plate 8 is provided in the placement position 105; wherein the second cover plate 8 is made of, but is not limited to, a high-strength resin material, to cover the placement part 104 and protect the strain gauge 2 inside the placement part 104.

[0047] All the devices selected in this application (parts whose specific structures are not specified) are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0048] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0051] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0052] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0053] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A sensor for measuring the tension of parachute cables, characterized in that, include: H-shaped body (1), which includes: a square hole (101) disposed in the middle of the H-shaped body (1); Four strain gauges (2) are symmetrically distributed in pairs in the square hole (101) to sense the deformation of the H-shaped body (1) and convert the deformation into an electrical signal output; A wireless transmitting circuit board (3) is disposed within a square hole (101) and is wiredly connected to each strain gauge (2); wherein The wireless transmitting circuit board (3) is adapted to receive the electrical signal output by the strain gauge (2), amplify and modulate it, and then transmit it to the receiving end. The battery (4) is snapped into the wireless transmitter circuit board (3) and supplies power to the wireless transmitter circuit board (3).

2. A sensor for measuring the tension of a parachute cable as described in claim 1, characterized in that, The H-shaped main body (1) includes: two pairs of symmetrically arranged connecting parts (102); A pin (5) connects each pair of the connecting parts (102); wherein The pin (5) passes through the two connecting parts (102); and The pin (5) is adapted to be connected to the parachute cable.

3. A sensor for measuring the tension of a parachute cable as described in claim 2, characterized in that, A fixing beam (6) is provided in the middle of the square hole (101); wherein The wireless transmission circuit board (3) is mounted on the fixed beam (6).

4. A sensor for measuring the tension of a parachute cable as described in claim 3, characterized in that, The H-shaped main body (1) further includes: mounting portions (103) disposed at both ends of the square hole (101); wherein The mounting section (103) is provided with a first cover plate (7).

5. A sensor for measuring the tension of a parachute cable as described in claim 4, characterized in that, The H-shaped main body (1) further includes: placement portions (104) disposed on both sides of the H-shaped main body (1); wherein Each of the aforementioned placement portions (104) is provided with two strain gauges (2); and The two strain gauges (2) are arranged in opposite directions; The placement part (104) is connected to the square hole (101), and there are four connections, which are used to place the connecting wires of the wireless transmitting circuit board (3) and each strain gauge (2) respectively.

6. A sensor for measuring the tension of a parachute cable as described in claim 5, characterized in that, The H-shaped main body (1) further includes: a placement position (105) disposed at the end of the placement part (104); wherein The placement position (105) is provided with a second cover plate (8).

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