Sensing device with adjustable prestress

Abstract

The invention discloses a sensing device with adjustable prestress. The sensing device comprises a sensing assembly and a flexible ring, the sensing assembly comprises a containing part, a force sensing part, a movable part and an adjusting part. The accommodating part is provided with an accommodating space. The force sensing member is embedded in the accommodating member. The movable piece is arranged in the containing space. The adjusting member is coupled to the movable member to move the movable member. The flexible ring penetrates through the accommodating piece. The flexible rings can provide tension to fix the sensing assembly on the object and enable the flexible rings located on the two sides of the movable piece to form an included angle, and the force sensing piece is located in the range surrounded by the flexible rings. The adjusting piece can enable the movable piece to be far away from the force sensing piece to drive one part of the flexible ring to be far away from the force sensing piece, and the size of the included angle is adjusted so as to increase the prestress applied to the force sensing piece.

Description

Technical Field

[0001] The present invention relates to a sensing device, and more particularly to a sensing device with adjustable prestress. Background Art

[0002] In recent years, for the goal of environmental sustainability, countries around the world have actively developed renewable energy. The renewable energy defined by RE100 includes light energy, wind energy, and geothermal energy, whose energy sources are from nature, endless and cost-free. Among the equipment required for these renewable energies, the piles of wind turbines for wind energy usually bear various different forces (such as: wind force, force generated by waves, or impact force during piling, etc.). For safety and maintenance, manufacturers of wind turbines will install sensing devices on the piles to measure the mechanical stress borne by the piles.

[0003] As the number of manufacturers investing in wind energy development increases, the structures and specifications of the piles of wind turbines vary. When installing the sensing device on the piles of different manufacturers, the initial measurement values of the sensing device are mostly different. Even due to the uneven surface flatness of the piles, when installing the sensing device on different piles of the same manufacturer, it may still cause differences in the initial measurement values of the sensing device. Summary of the Invention

[0004] In view of the above problems, an object of the present invention is to provide a sensing device with adjustable prestress, which can adjust the prestress.

[0005] An embodiment of the present invention provides a sensing device with adjustable prestress, which is suitable for being installed on an object. The sensing device with adjustable prestress includes at least one sensing component and a flexible ring. The sensing component includes a housing, a force sensing member, a movable member, and an adjusting member. The housing has a receiving space. The force sensing member is embedded in the housing. The movable member is disposed within the receiving space. The adjusting member is coupled to the movable member so that the movable member can approach or move away from the force sensing member. The flexible ring penetrates through the housing to provide a tension force to fix the sensing component to the object. The force sensing member is located within the range surrounded by the flexible ring. The adjusting member can move the movable member away from the force sensing member to increase a prestress applied to the force sensing member.

[0006] An embodiment of the present invention provides a sensing device with adjustable prestress, which includes at least one sensing component and a flexible ring. The sensing component includes a housing, a force sensing member, a movable member, and an adjusting member. The housing has a receiving space. The force sensing member is embedded in the housing. The movable member is disposed within the receiving space. The adjusting member is coupled to the movable member. The flexible ring penetrates through the housing. Wherein the movable member can move relative to the housing to approach or move away from the force sensing member, so that the movable member drives a part of the flexible ring to approach or move away from the force sensing member.

[0007] An embodiment of the present invention provides a sensing device with adjustable prestress, which is suitable for being installed on an object. The sensing device with adjustable prestress includes at least one sensing component and a flexible ring. The sensing component includes a housing, a force sensing element, a movable member, and an adjusting member. The housing has a receiving space. The force sensing element is embedded in the housing. The movable member is disposed within the receiving space. The adjusting member is coupled to the movable member. The flexible ring penetrates the housing. The flexible ring can fix the sensing component on the object and form an included angle between the flexible rings located on both sides of the movable member. The movable member can move a part of the flexible ring to adjust the size of the included angle.

[0008] According to the sensing device with adjustable prestress of an embodiment of the present invention, the position of the movable member is adjusted by the adjusting member, and further, the prestress of the flexible ring on the force sensing element is adjusted by the movable member. Thus, the sensing device with adjustable prestress can be applied to various objects to be measured with different specifications.

[0009] The above description of the content of the present invention and the following description of the embodiments are used to demonstrate and explain the spirit and principle of the present invention, and provide a further explanation of the scope of the patent application of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a three-dimensional schematic diagram of the sensing device with adjustable prestress according to an embodiment of the present invention;

[0011] Figure 2 is Figure 1 a three-dimensional exploded schematic diagram of the sensing device with adjustable prestress;

[0012] Figure 3 is Figure 1 a three-dimensional schematic diagram of the housing of the sensing device with adjustable prestress;

[0013] Figure 4 is Figure 1 a three-dimensional schematic diagram of the movable member of the sensing device with adjustable prestress;

[0014] Figure 5 is a partial top view cross-sectional schematic diagram of installing the sensing device with adjustable prestress of Figure 1 on an object;

[0015] Figure 6 is Figure 5 a top view cross-sectional schematic diagram when adjusting the prestress of the sensing device;

[0016] Figure 7 is Figure 5 a top view cross-sectional schematic diagram when adjusting the prestress of the sensing device;

[0017] Figure 8 is Figure 1Schematic perspective view of the installation of the adjustable prestress sensing device;

[0018] Figure 9 is Figure 1 Schematic top sectional view of the installation of the adjustable prestress sensing device;

[0019] Figure 10 is Figure 1 Schematic top sectional view of the completed installation of the adjustable prestress sensing device;

[0020] Figure 11 Schematic perspective view of the adjustable prestress sensing device according to another embodiment of the present invention;

[0021] Figure 12 Schematic perspective view of the adjustable prestress sensing device according to another embodiment of the present invention.

[0022] Symbol description

[0023] 100, 100a, 100b: Adjustable prestress sensing device

[0024] 1: Sensing component

[0025] 11: Accommodating member

[0026] 110: Accommodating space

[0027] 110a: Inner rounded corner

[0028] 110b: Inner chamfer

[0029] 110c: Inner rounded corner

[0030] 1100: Perforation

[0031] 111: First side wall

[0032] 1111: Body part

[0033] 1112: Protruding part

[0034] 112: Second side wall

[0035] 113: Third side wall

[0036] 114: Fourth side wall

[0037] 12: Force sensing element

[0038] 13: Movable part

[0039] 13a: Outer rounded corner

[0040] 13b: Outer chamfer

[0041] 13c: Outer rounded corner

[0042] 130: Perforation

[0043] 131: Internal thread

[0044] 132: Outer side surface

[0045] 14: Adjusting part

[0046] 141: External thread

[0047] 142: Head

[0048] 115: Top surface

[0049] 116: Bottom surface

[0050] 2, 2b: Flexible ring

[0051] 20, 20b: Belt body part

[0052] 21: Connecting part

[0053] 21b: Locking part

[0054] 3: Detachable installation aid

[0055] 31: Foot

[0056] 4: Screw

[0057] 9: Object (pile)

[0058] D1: First direction

[0059] D2: Second direction

[0060] D3: Third direction

[0061] F0, F1, F2: Force

[0062] T0, T1, T2: Tension

[0063] θ0, θ1, θ2: Included angle Detailed implementation mode

[0064] In the following implementation mode, the detailed features and advantages of the embodiments of the present invention are described in detail. The content is sufficient for any person with ordinary knowledge in the field to understand the technical content of the embodiments of the present invention and implement it accordingly. According to the content disclosed in this specification, the claims and the drawings, any person with ordinary knowledge in the field can easily understand the related purposes and advantages of the present invention. The following embodiments further illustrate the content of the present invention in detail, but do not limit the scope of the present invention in any way.

[0065] In the so-called schematic diagrams of this specification, for the purpose of illustration, there may be exaggerated situations in terms of dimensions, proportions, angles, etc., but it is not intended to limit the present invention. Various changes can be made without departing from the gist of the present invention. The up-down, front-back orientations mentioned in the description of the embodiments and the drawings are for illustration purposes and are not intended to limit the present invention.

[0066] Please refer to Figures 1 to 10 。 Figure 1 FIG. 7 is a perspective schematic view of an adjustable prestress sensing device according to an embodiment of the present invention. Figure 2 Illustrate Figure 1 exploded perspective schematic view of the adjustable prestress sensing device of Figure 3 Illustrate Figure 1 perspective schematic view of the housing member of the adjustable prestress sensing device of Figure 4 Illustrate Figure 1 perspective schematic view of the movable member of the adjustable prestress sensing device of Figure 5 Illustrate the Figure 1 top view cross-sectional schematic view of installing the adjustable prestress sensing device of Figure 6 Illustrate adjusting Figure 5 top view cross-sectional schematic view when adjusting the prestress of the sensing device of Figure 7 Illustrate adjusting Figure 5 top view cross-sectional schematic view when adjusting the prestress of the sensing device of Figure 8 Illustrate Figure 1 perspective schematic view when installing the adjustable prestress sensing device of Figure 9 Illustrate Figure 1 top view cross-sectional schematic view when installing the adjustable prestress sensing device of Figure 10 Illustrate Figure 1 top view cross-sectional schematic view after the installation of the adjustable prestress sensing device is completed. The adjustable prestress sensing device 1 can be installed on the object to be measured, such as the pile body of a wind turbine generator, etc.

[0067] Such as Figure 1 and Figure 2As shown, the adjustable prestress sensing device 100 includes a plurality of sensing components 1 and a flexible ring 2. The sensing component 1 includes a housing 11, a force sensing member 12, a movable member 13, and an adjusting member 14. The housing 11 has a receiving space 110. The force sensing member 12 is embedded in the housing 11. The movable member 13 is movably disposed within the receiving space 110. The movable member 13 can approach or move away from the force sensing member 12 relative to the housing 11. The adjusting member 14 is coupled to the movable member 13. The adjusting member 14 can adjust the movable member 13 so that the movable member 13 can move relative to the housing 11. The belt portion 20 of the flexible ring 2 passes through these sensing components 1, and the belt portion 20 is connected into a ring through the connecting portion 21. The connecting portion 21 can be formed by welding, fusing, adhesion, locking, etc.

[0068] As Figure 2 shown, the housing 11 includes a first side wall 111, a second side wall 112, a third side wall 113, and a fourth side wall 114. The first side wall 111 and the second side wall 112 are opposite to each other. The third side wall 113 and the fourth side wall 114 are opposite to each other. The receiving space 110 is located between the first side wall 111 and the second side wall 112, and is located between the third side wall 113 and the fourth side wall 114. In other words, the first side wall 111, the third side wall 113, the second side wall 112, and the fourth side wall 114 surround the receiving space 110.

[0069] The first side wall 111 and the second side wall 112 are arranged along a first direction D1. A second direction D2 is substantially perpendicular to the first direction D1. The housing 11 has a through hole 1100. The through hole 1100 extends along the second direction D2 and penetrates the third side wall 113 and the fourth side wall 114. The through hole 1100 communicates with the receiving space 110. A third direction D3 is substantially perpendicular to the first direction D1 and the second direction D2. The first side wall 111 includes a main body portion 1111 and a protruding portion 1112 that are connected to each other. The protruding portion 1112 is farther from the receiving space 110 than the main body portion 1111. As Figure 2 and Figure 3 shown, the thickness H1 of the protruding portion 1112 in the third direction D3 is smaller than the thickness H2 of the main body portion 1111 in the third direction D3. The force sensing member 12 is embedded in the protruding portion 1112 of the first side wall 111. The thickness of the protruding portion 1112 in the third direction D3 is thinner than that of the main body portion 1111, which can reduce the contact area between the force sensing member 12 and the protruding portion 1112. When the same force is applied to the object to be measured, the force borne by the unit area of the force sensing member 12 will be larger, thus improving the sensing sensitivity of the force sensing member 12.

[0070] In addition, if the thickness of the main body portion 1111 is the same as that of the protruding portion 1112, it may cause the forces borne by the upper and lower ends of the force sensor 12 to be weaker than those in the middle. When the sensing sensitivity per unit area of the force sensor 12 is insufficient, the forces borne by the upper and lower ends may not be detected, resulting in an underestimation. Therefore, the thickness of the protruding portion 1112 in the third direction D3 is thinner than that of the main body portion 1111, so that the force applied by the belt body portion 20 to the accommodating member 11 can be fully transmitted to the force sensor 12 to increase the measurement accuracy.

[0071] As Figure 2 and Figure 3 shown, the movable member 13 is disposed within the accommodating space 110 and is movable relative to the accommodating member 11 in the first direction D1. The movable member 13 has a through hole 130. The through hole 130 extends in the second direction D2. The movable member 13 can move in the first direction D1 to abut against the first side wall 111 or can also move in the first direction D1 to abut against the second side wall 112. The space of the accommodating space 110 can restrict the movable member 13 so that the movable member 13 does not rotate relative to the accommodating member 11. Moreover, the accommodating member 11 restricts the freedom of movement of the movable member 13 in the second direction D2.

[0072] As Figure 2 , Figure 3 and Figure 4 shown, the adjusting member 14 can be a bolt, and the axial direction of its rotation axis is substantially parallel to the first direction D1. As Figure 5As shown, the adjusting member 14 has an external thread 141 and a head 142. The movable member 13 has an internal thread 131. The external thread 141 and the internal thread 131 are matched. The adjusting member 14 penetrates through the second side wall 112 and is coupled to the movable member 13. The adjusting member 14 is rotatable relative to the second side wall 112 and the movable member 13. The head 142 remains located outside the accommodating member 11, and the head 142 can abut against the second side wall 112. By the third side wall 113 and the fourth side wall 114 respectively contacting the movable member 13, the rotational freedom of the movable member 13 about the first direction D1 as the rotation axis can be restricted, that is, the movable member 13 is restricted by the third side wall 113 and the fourth side wall 114 and cannot rotate about the first direction D1 as the rotation axis. Therefore, when the external thread 141 of the adjusting member 14 is coupled to the internal thread of the movable member 13, and the adjusting member 14 rotates relative to the movable member 13 with its axial direction (parallel to the first direction D1) as the rotation axis, the movable member 13 can only move along the first direction D1. Therefore, through the cooperation of the external thread 141 and the internal thread 131, the distance between the head 142 and the movable member 13 can be adjusted. The farther the distance between the head 142 and the movable member 13 is, the farther the distance between the movable member 13 and the second side wall 112 is, and the closer the distance between the movable member 13 and the first side wall 111 is. The closer the distance between the head 142 and the movable member 13 is, the closer the distance between the movable member 13 and the second side wall 112 is, and the farther the distance between the movable member 13 and the first side wall 111 is.

[0073] As Figure 2 and Figure 5 shown, the belt body portion 20 penetrates through the third side wall 113 of the accommodating member 11, the movable member 13, and the fourth side wall 114 of the accommodating member 11 along the second direction D2. That is, the belt body portion 20 penetrates through the through hole 1100 and the through hole 130. In addition, by the belt body portion 20 penetrating through the through hole 130 of the movable member 13, the rotational freedom of the movable member 13 about the first direction D1 as the rotation axis can also be restricted. In addition, in the past, an inflexible solid holder was used to set the sensing component on the object to be measured. Compared with the inflexible solid holder in the past, in this embodiment, the sensing component 1 is set on the object to be measured by using the flexible ring 2 to replace other inflexible solid holders, so as to reduce the overall weight of the adjustable prestress sensing device 100. In this way, this embodiment is easier to be set on the object to be measured than other inflexible solid holders, and the installation cost and installation time are greatly reduced.

[0074] As Figure 3 and Figure 5As shown, the accommodating member 11 has an inner side surface surrounding the accommodating space 110. The inner side surface is close to the second side wall 112 and far from the first side wall 111. On both sides of the inner side surface, there are respectively an inner fillet 110a (concave arc surface), an inner chamfer 110b (a plane inclined to the second side wall 112 and the third side wall 113), and an inner fillet 110c (concave arc surface). That is, the accommodating member 11 has an inner fillet 110a, an inner chamfer 110b, and an inner fillet 110c between the second side wall 112 and the third side wall 113. The inner fillet 110a is connected to the second side wall 112, the inner chamfer 110b is connected to the inner fillet 110a, the inner fillet 110c is connected to the inner chamfer 110b, and the third side wall 113 is connected to the inner chamfer 110b. Moreover, the accommodating member 11 also has an inner fillet 110a, an inner chamfer 110b, and an inner fillet 110c between the second side wall 112 and the fourth side wall 114. The inner fillet 110a is connected to the second side wall 112, the inner chamfer 110b is connected to the inner fillet 110a, the inner fillet 110c is connected to the inner chamfer 110b, and the fourth side wall 114 is connected to the inner chamfer 110b.

[0075] As Figure 4 and Figure 5 shown, on both sides of an outer side surface 132 of the movable member 13 that is close to the second side wall 112 and far from the first side wall 111, there are respectively an outer fillet 13a (convex arc surface), an outer chamfer 13b (a plane inclined to the outer side surface 132), and an outer fillet 13c (convex arc surface). That is, the outer side surface 132 of the movable member 13 has an outer fillet 13a, an outer chamfer 13b, and an outer fillet 13c at the position close to the third side wall 113. The outer fillet 13a is connected to the outer side surface 132, the outer chamfer 13b is connected to the outer fillet 13a, and the outer fillet 13c is connected to the outer chamfer 13b. Moreover, the outer side surface 132 of the movable member 13 also has an outer fillet 13a, an outer chamfer 13b, and an outer fillet 13c at the position close to the fourth side wall 114. The outer fillet 13a is connected to the outer side surface 132, the outer chamfer 13b is connected to the outer fillet 13a, and the outer fillet 13c is connected to the outer chamfer 13b. Thus, as Figure 5 shown, the shape of the accommodating space 110 matches that of the movable member 13. When the movable member 13 is moved away from the first side wall 111 and close to the second side wall 112, the movable member 13 can be smoothly guided to abut against the second side wall 112. Moreover, when the movable member 13 abuts against the second side wall 112, stress concentration is not likely to occur between the accommodating member 11 and the movable member 13.

[0076] Figures 5 to 7 Describe the situation when using the sensing device 100 with adjustable prestress. As Figure 5As shown, by adjusting the fit between the external thread 141 of the adjusting member 14 and the internal thread 131 of the movable member 13, and rotating the adjusting member 14 relative to the second side wall 112 and the movable member 13, the movable member 13 is moved in the first direction D1 until it abuts against the first side wall 111. The belt body portion 20 passes through the two sensing components 1, and binds the two sensing components 1 to the object 9 to be measured. The belt body portion 20 is connected into a loop through the connecting portion 21. The object 9 to be measured can be, for example, the pile body of a wind power generating set, etc. When the belt body portion 20 binds the sensing component 1 to the object (pile body) 9, the radial direction of the pile body 9 is set as the first direction D1, the tangential direction of the circumference of the pile body 9 is set as the second direction D2, and the axial direction of the pile body 9 is set as the third direction D3.

[0077] When the belt body portion 20 provides a tension T0 to bind the sensing component 1 to the object 9, the protruding portion 1112 of the first side wall 111 of the accommodating member 11 abuts against the object 9. The force sensing member 12 is located within the range surrounded by the belt body portion 20. The tension T0 applies a prestress to the force sensing member 12 through the movable member 13 and the accommodating member 11. This prestress is positively correlated with the force F0 exerted by the object 9 on the protruding portion 1112 of the first side wall 111 of the accommodating member 11. The belt body portions 20 on both sides of the movable member 13 form an angle θ0. At this time, the magnitude of the force F0 is approximately 2T0×cos(θ0 / 2).

[0078] As Figure 6 shown, when the adjusting member 14 rotates relative to the accommodating member 11 and the movable member 13, due to the fit between the internal thread 131 and the external thread 141, the distance between the movable member 13 and the head 142 will shorten. Therefore, the movable member 13 moves relative to the accommodating member 11 away from the first side wall 111 and the force sensing member 12 embedded in the first side wall 111. At this time, the movable member 13 drives a part of the belt body portion 20 away from the force sensing member 12, so that the belt body portion 20 will provide a tension T1, and T1>T0. The tension T1 applies a prestress to the force sensing member 12 through the movable member 13, the adjusting member 14 and the accommodating member 11. This prestress is positively correlated with the force F1 exerted by the object 9 on the protruding portion 1112 of the first side wall 111 of the accommodating member 11. The belt body portions 20 on both sides of the movable member 13 form an angle θ1, θ1≤θ0. (When the belt body portion 20 contacts the first side wall 111 to form the angle θ1, θ1 = θ0; when the belt body portion 20 leaves the first side wall 111 to form the angle θ1, θ1<θ0) At this time, the magnitude of the force F1 is approximately 2T1×cos(θ1 / 2). Since F1>F0, the prestress increases.

[0079] As Figure 7As shown, when the adjusting member 14 continues to rotate relative to the accommodating member 11 and the movable member 13, the distance between the movable member 13 and the head 142 will be further shortened through the cooperation of the internal thread 131 and the external thread 141. Therefore, the movable member 13 moves relative to the accommodating member 11 and is further away from the first side wall 111 and the force sensing member 12 embedded in the first side wall 111 until the movable member 13 abuts against the second side wall 112. At this time, the movable member 13 drives a part of the belt body portion 20 to be further away from the force sensing member 12, so that the belt body portion 20 provides a tension T2, and T2 > T1. The tension T2 applies a prestress to the force sensing member 12 through the movable member 13, the adjusting member 14 and the accommodating member 11. This prestress is positively correlated with the force F2 applied by the object 9 to the protrusion 1112 of the first side wall 111 of the accommodating member 11. The belt body portions 20 on both sides of the movable member 13 form an included angle θ2, θ2 < θ1. At this time, the magnitude of the force F2 is approximately 2T2 × cos(θ2 / 2). Since F2 > F1, the prestress is further increased.

[0080] Conversely, when the movable member 13 moves relative to the accommodating member 11 and approaches the force sensing member 12, the prestress can be gradually reduced. Therefore, the adjustable prestress sensing device 100 can Figures 5 to 7 through the content shown, adjust the magnitude of the prestress borne by each force sensing member 12. The user can adjust the prestress borne by the force sensing member 12 in different ways so that the initial measurement values of these force sensing members 12 are made consistent. For example, some sensing components 1 can be in the Figure 5 state, some sensing components 1 can be in the Figure 6 state, and some sensing components 1 can be in the Figure 7 state. Next, the force sensing members 12 of multiple sensing components 1 can be used to measure the stress borne by the object 9.

[0081] In the following embodiments, two sensing components 1 can be tied to the object 9, but not limited thereto. In other embodiments, three or more sensing components 1 can also be tied to the object 9, and adjacent sensing components 1 can be equidistant from each other. Thus, the stress borne by the object 9 in each direction can be measured.

[0082] As Figure 8 and Figure 9 shown, in addition to the Figure 1 sensing component 1 and the flexible ring 2 shown, the adjustable prestress sensing device 100 can also include a plurality of detachable mounting assistants 3. The detachable mounting assistants 3 can be detachably fixed to the top surface 115 and the bottom surface 116 of the accommodating member 11. For example, the detachable mounting assistants 3 can be fixed to the accommodating member 11 through screws 4. Each detachable mounting assistant 3 includes two feet 31. As Figure 9As shown, in a top-down view, the foot portion 31 is located within the extension range surrounded by the flexible ring 2. When the flexible ring 2 binds the sensing assembly 1 to the object 9, the foot portions 31 of the detachable mounting aid 3 are located on both sides of the protruding portion 1112 of the accommodating member 11. The foot portions 31 abut against the object 9. Thus, during the installation of the adjustable prestress sensing device 100, it is possible to prevent the sensing assembly 1 from flipping relative to the object 9 with the protruding portion 1112 as a pivot point.

[0083] As Figure 10 shown, when the installation of the adjustable prestress sensing device 100 is completed, the detachable mounting aid 3 can be disassembled, such that the sensing assembly 1 is only abutted against the object 9 by the protruding portion 1112 of the accommodating member 11. In addition, the user can Figures 5 to 7 adjust the prestress borne by the force sensing member 12 in the two sensing assemblies 1 respectively. After adjusting the prestress, the object 9 can be measured. When the external force applied to the object 9 (e.g., the magnitude or direction of the wind force changes), the object 9 will further apply a force of different magnitude or direction change to the protruding portion 1112, thereby enabling the force sensing member 12 to measure the force change or stress change received by the object 9.

[0084] Please refer to Figure 11 . Figure 11 FIG. shows a perspective view of an adjustable prestress sensing device according to another embodiment of the present invention. In this embodiment, the number of sensing assemblies 1 included in the adjustable prestress sensing device 100a is single.

[0085] Please refer to Figure 12 . Figure 12 FIG. shows a perspective view of an adjustable prestress sensing device according to another embodiment of the present invention. In this embodiment, the flexible ring 2b of the adjustable prestress sensing device 100b includes a belt portion 20b and a locking portion 21b. The locking portion 21b locks the belt portion 20b into a ring. When installing the adjustable prestress sensing device 100b on the object 9 ( Figure 5 ), the belt portion 20b can be opened and locked through the locking portion 21b. When disassembling the adjustable prestress sensing device 100b, the belt portion 20b can also be opened through the locking portion 21b.

[0086] In summary, in the adjustable prestress sensing device of an embodiment of the present invention, the position of the movable member is adjusted by the adjusting member, and further the prestress of the flexible ring on the force sensing member is adjusted by the movable member. Thus, the adjustable prestress sensing device can improve the measurement accuracy and can be applied to various different specifications of objects to be measured. In addition, by using a flexible ring to replace other inflexible solid fixators, the overall weight of the adjustable prestress sensing device can be reduced, and the installation cost and installation time can be significantly decreased.

Claims

1. An adjustable prestress sensing device, adapted to be installed on an object, comprising: At least one sensing component, comprising: A housing having a receiving space; A force sensing member embedded in the housing; A movable member disposed within the receiving space; and An adjusting member coupled to the movable member to enable the movable member to approach or move away from the force sensing member; and A flexible ring, wherein the flexible ring penetrates the housing to provide a tension for fixing the at least one sensing component to the object, the force sensing member is located within the range surrounded by the flexible ring, and the adjusting member can move the movable member away from the force sensing member to increase the prestress applied to the force sensing member.

2. An adjustable prestress sensing device, comprising: At least one sensing component, comprising: A housing having a receiving space; A force sensing member embedded in the housing; A movable member disposed within the receiving space; and An adjusting member coupled to the movable member; and A flexible ring penetrating the housing, wherein the movable member can move relative to the housing to approach or move away from the force sensing member, so that the movable member drives a part of the flexible ring to approach or move away from the force sensing member.

3. An adjustable prestress sensing device, adapted to be installed on an object, comprising: At least one sensing component, comprising: A housing having a receiving space; A force sensing member embedded in the housing; A movable member disposed within the receiving space; and An adjusting member coupled to the movable member; and A flexible ring penetrating the housing, wherein the flexible ring can fix the at least one sensing component to the object and form an included angle between the flexible rings on both sides of the movable member, and the movable member can move a part of the flexible ring to adjust the size of the included angle.

4. The adjustable prestress sensing device according to any one of claims 1 to 3, wherein the number of the at least one sensing component is plural.

5. The adjustable prestress sensing device according to any one of claims 1 to 3, wherein the flexible ring penetrates the movable member.

6. The adjustable prestress sensing device according to any one of claims 1 to 3, wherein the accommodating member includes opposite first sidewall and second sidewall, the accommodating space is between the first sidewall and the second sidewall, and the force sensing member is disposed in the first sidewall.

7. The adjustable prestress sensing device according to claim 6, wherein the adjusting member penetrates the second sidewall and is coupled to the movable member, and the adjusting member can rotate relative to the second sidewall and the movable member.

8. The adjustable prestress sensing device according to claim 7, wherein the adjusting member has an external thread, the movable member has an internal thread, and the external thread and the internal thread are matched.

9. The adjustable prestress sensing device according to claim 8, wherein the external thread of the adjusting member is coupled to the internal thread of the movable member, such that the adjusting member rotates about the axial direction as the rotation axis, thereby causing the movable member to move along the axial direction and preventing the movable member from rotating about the axial direction as the rotation axis.

10. The adjustable prestress sensing device according to claim 9, wherein the accommodating member further includes a third sidewall and a fourth sidewall, and the first sidewall, the third sidewall, the second sidewall and the fourth sidewall surround the accommodating space, and the third sidewall and the fourth sidewall respectively contact the movable member to limit the rotational freedom of the movable member about the axial direction as the rotation axis.

11. The adjustable prestress sensing device according to claim 10, wherein the flexible ring penetrates through the third sidewall, the movable member and the fourth sidewall.

12. The adjustable prestress sensing device according to claim 6, wherein the first sidewall and the second sidewall are arranged along a first direction, the flexible ring penetrates through the accommodating member along a second direction, the second direction is substantially perpendicular to the first direction, the movable member is movable relative to the accommodating member along the first direction, the accommodating member restricts the moving freedom of the movable member along the second direction, and restricts the rotational freedom of the movable member about the first direction as the rotation axis.

13. The adjustable prestress sensing device according to claim 12, wherein the first sidewall includes a body portion and a protruding portion connected to each other, the protruding portion is farther from the accommodating space than the body portion, the thickness of the protruding portion in a third direction is less than the thickness of the body portion in the third direction, the third direction is substantially perpendicular to the first direction and the second direction, and the force sensing member is disposed on the protruding portion.

14. The adjustable prestress sensing device according to claim 6, wherein the accommodating member has an inner side surface surrounding the accommodating space, the inner side surface is close to the second sidewall and far from the first sidewall, and both sides of the inner side surface respectively have at least one inner fillet and inner chamfer, and both sides of the outer side surface of the movable member close to the second sidewall and far from the first sidewall respectively have at least one outer fillet and outer chamfer.

15. The adjustable prestress sensing device according to any one of claims 1 to 3, further comprising at least one detachable mounting auxiliary, detachably fixed to the bottom surface or the top surface of the accommodating member, and the at least one detachable mounting auxiliary includes two feet, and the two feet are located within the extending range surrounded by the flexible ring.

16. The adjustable prestress sensing device according to any one of claims 1 to 3, wherein the flexible ring includes a belt body portion and a locking portion, and the locking portion locks the belt body portion into a ring.

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