Angle sensor

Abstract

The invention relates to the technical field of sensors, in particular to an angle sensor which comprises a shell, a rotating shaft is rotatably connected to the interior of the shell, a rotating ring is slidably connected to the exterior of the rotating shaft, a first sliding block and a second sliding block are slidably connected to the exterior of the rotating ring, and a second wire used for current conduction is arranged between the first sliding block and the second sliding block. During use, the rotating angle of the rotating ring is calculated by measuring the resistance value change between the first wire on the second fixed resistor and the fourth wire on the first fixed resistor, the angular displacement and the angular speed of rotating equipment are further accurately measured, the function of maintaining shaft position signals is achieved, measurement errors do not exist, and the use reliability is high. The first fixed resistor is in a circular ring shape, and a gap is formed in the first fixed resistor, so that the angular displacement and the angular velocity of the rotating equipment can be accurately measured while the rotating shaft of the measured equipment rotates in a single direction all the time.

Description

Technical Field

[0001] The present invention relates to the technical field of sensors, and particularly to an angle sensor. Background Art

[0002] An angle sensor is a sensor used to detect various parameters related to angles (such as angular displacement, angular acceleration, etc.). In many measurement works, the application of angle sensors is very extensive. Because of their special working methods, they cannot achieve good measurement effects for some angles, and there are some areas where direct measurement cannot be carried out. At this time, an angle sensor is needed to achieve the measurement purpose. Installing and using the sensor is simpler and more convenient, and the accuracy of the sensor is very high. It can also directly measure the change result of the angle and transmit reliable information, and can be used in industries such as production work and product manufacturing.

[0003] After retrieval, the invention patent with the Chinese patent number CN115166285A discloses an angle sensor, which relates to the technical field of sensors, and aims to solve the problem that the angular displacement of a to-be-measured rotating object cannot be measured. It includes a retention needle and a puncture needle inserted therein; it includes an outer cylinder, a rotating shaft axially fixed inside the outer cylinder, and a movable ring sleeved outside the rotating shaft. The top of the rotating shaft contacts the top of the outer cylinder, and the bottom of the rotating shaft can be connected to the rotating shaft of the device to be measured. The outer wall of the middle part of the rotating shaft is threadedly connected to the inner wall of the movable ring. One side of the movable ring is slidably matched with one side of the outer cylinder, and a resistance slider is arranged on the other side of the movable ring. The resistance slider is slidably matched with a fixed resistor vertically arranged on the other side of the outer cylinder. The top and bottom of the fixed resistor are respectively connected to a first wire and a second wire, and the resistance slider is connected to a third wire. In the present invention, a DC voltage is first applied to the first wire and the second wire, and then the change value of the voltage between the third wire and the first wire before and after the rotation of the device to be measured is measured. According to this change value, the angular displacement and angular velocity of the rotating device are calculated. The manufacturing cost is low and the structural reliability is high.

[0004] However, in the actual use process of the above device, only the change value of the voltage between the third wire on the resistance slider and the first wire on the fixed resistor is measured before and after the rotation of the device to be measured. According to this voltage change value, the angular displacement and angular velocity of the rotating device can be calculated through calculation. However, the rotating shaft is only provided with external threads in the middle, which only ensures that the movable ring does not move up and down with the rotation of the rotating shaft after moving to the uppermost or lowermost position of the rotating shaft, and the angle sensor is not damaged. When the device to be measured rotates in a single direction, this angle sensor cannot continue to measure, and the angle sensor needs to be removed for correction, which is troublesome to operate and seriously affects the efficiency. Therefore, an angle sensor is needed. Summary of the Invention

[0005] The object of the present invention is to solve the problem in the prior art that there is a lack of equipment for disassembling and destroying reinforced concrete, resulting in the need to additionally rely on external equipment for demolishing reinforced concrete during the operation of the reinforced concrete column replacement device, which increases the operation cost of the device and reduces the working efficiency of the device. An angle sensor is proposed.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] An angle sensor includes a housing, a rotating shaft is rotatably connected inside the housing, a rotating ring is slidably connected to the outside of the rotating shaft, a first slider and a second slider are slidably connected to the outside of the rotating ring, and a second wire for current conduction is provided between the first slider and the second slider;

[0008] A first connecting block is fixedly connected to the outside of the first slider, a second fixed resistor is slidably connected to the side of the first connecting block away from the first slider, a first wire is fixedly connected to the outside of the second fixed resistor, and the housing is fixedly connected to the second fixed resistor. A second connecting block is fixedly connected to the outside of the second slider, a first fixed resistor is slidably connected to the side of the second connecting block away from the second slider, and a third wire and a fourth wire are fixedly connected to the outside of the first fixed resistor. The housing is fixedly connected to the first fixed resistor;

[0009] Among them, to eliminate the influence of temperature on the measurement result, a stable 24V DC voltage can be applied between the third wire and the fourth wire of the first fixed resistor. The first fixed resistor is circular, and a slit is provided inside the first fixed resistor to design the first fixed resistor into a resistor that can be measured in segments.

[0010] The above technical solution further includes:

[0011] A sealing ring is fixedly connected to the outside of the housing.

[0012] An output interface is fixedly connected to the outside of the housing.

[0013] A second chute and a third chute are provided on the outside of the rotating ring, the first slider is slidably connected to the third chute, and the second slider is slidably connected to the second chute.

[0014] A first spring is fixedly connected to the side of the first slider away from the first connecting block, and the first spring is fixedly connected to the rotating ring on the side away from the first slider. A second spring is fixedly connected to the side of the second slider away from the second connecting block, and the second spring is fixedly connected to the rotating ring on the side away from the second slider;

[0015] Among them, the first spring and the second spring enable the first connecting block and the second connecting block to be in close contact with the first fixed resistor and the second fixed resistor respectively, thereby improving the reliability of the sensor.

[0016] A fourth chute is provided outside the first fixed resistor, and the second connecting block is slidably connected to the fourth chute. A first chute is provided outside the second fixed resistor, and the first connecting block is slidably connected to the first chute.

[0017] A groove is provided outside the rotating shaft, and a convex block is fixedly connected to the outside of the rotating ring. The convex block is slidably connected to the groove.

[0018] A first wire connection hole, a third wire connection hole and a fourth wire connection hole are provided outside the housing. The first wire is arranged inside the first wire connection hole, the third wire is arranged inside the fourth wire connection hole, the fourth wire is arranged inside the third wire connection hole. A second wire connection hole is provided inside the rotating ring, and the second wire is arranged inside the second wire connection hole.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. In the present invention, during use, the rotating shaft is connected to the rotating shaft of the device to be measured through a coupling. During the rotation of the rotating shaft, the rotating ring is driven to rotate. Since the first fixed resistor is not a complete ring and there is a gap inside the first fixed resistor, and because the resistance value of the first fixed resistor is proportional to its angle R = ρkθ / 2πS (k is a constant), and the corresponding resistance values of the first slider, the second slider and the second fixed resistor are small enough, the change in the resistance value between the first wire on the second fixed resistor and the fourth wire on the first fixed resistor can be measured, and the angle of rotation of the rotating ring can be calculated. Further, the angular displacement and angular velocity of the rotating shaft on the angle sensor can be calculated, and then the angular displacement and angular velocity of the rotating device can be accurately measured. The whole device has a simple structure, low manufacturing cost, and has the function of maintaining the shaft position signal, no measurement error, and high reliability in use.

[0021] 2. In the present invention, during use, when the rotating shaft of the device under test needs to rotate in a single direction continuously, the rotating shaft drives the rotating ring to rotate in a single direction. During the rotation of the rotating ring, the second connecting block on the second slider always makes contact rotation on the first fixed resistor through the fourth sliding groove, and the first connecting block on the first slider always makes contact rotation on the second fixed resistor through the first sliding groove. When the second connecting block passes through the gap on the first fixed resistor, the resistance value detected between the first wire on the second fixed resistor and the fourth wire on the first fixed resistor will show an abnormal moment. Two abnormal moments form a cycle, that is, at this time, the rotating shaft of the device under test rotates a full cycle in a single direction. When the rotating shaft of the device under test rotates in a single direction continuously, it is ensured that the angular displacement and angular velocity of the rotating device can be accurately measured without removing the angle sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of an angle sensor proposed by the present invention;

[0023] Figure 2 is an external structural diagram of the present invention;

[0024] Figure 3 is a schematic structural diagram of the first part of the present invention;

[0025] Figure 4 is a schematic structural diagram of the second part of the present invention;

[0026] Figure 5 is Figure 1 an enlarged schematic diagram of part A in

[0027] Figure 6 is Figure 1 an enlarged schematic diagram of part B in

[0028] Figure 7 is Figure 3 an enlarged schematic diagram of part C in

[0029] Figure 8 is Figure 1 an enlarged schematic diagram of part D in

[0030] Figure 9 is Figure 4 an enlarged schematic diagram of part E in

[0031] In the figure: 1. Housing; 2. Rotating shaft; 3. Output interface; 4. First fixed resistor; 5. Second fixed resistor; 6. Rotating ring; 7. First chute; 8. First wire; 9. First wire connection hole; 10. First slider; 11. First spring; 12. Second slider; 13. Second spring; 14. Second chute; 15. Third chute; 16. Second wire; 17. Second wire connection hole; 18. Fourth chute; 19. Sealing ring; 20. Third wire; 21. Fourth wire; 22. Third wire connection hole; 23. Fourth wire connection hole; 24. Bump; 25. First connecting block; 26. Second connecting block; 27. Groove. Detailed implementation

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1

[0034] As Figures 1 - 9 shown, an angle sensor proposed by the present invention includes a housing 1. A rotating shaft 2 is rotatably connected inside the housing 1. A rotating ring 6 is slidably connected outside the rotating shaft 2. A first slider 10 and a second slider 12 are slidably connected outside the rotating ring 6. A second wire 16 for current conduction is arranged between the first slider 10 and the second slider 12;

[0035] A first connecting block 25 is fixedly connected to the outside of the first slider 10. A second fixed resistor 5 is slidably connected to the side of the first connecting block 25 away from the first slider 10. A first wire 8 is fixedly connected to the outside of the second fixed resistor 5. The housing 1 is fixedly connected to the second fixed resistor 5. A second connecting block 26 is fixedly connected to the outside of the second slider 12. A first fixed resistor 4 is slidably connected to the side of the second connecting block 26 away from the second slider 12. A third wire 20 and a fourth wire 21 are fixedly connected to the outside of the first fixed resistor 4. The housing 1 is fixedly connected to the first fixed resistor 4;

[0036] A sealing ring 19 is fixedly connected to the outside of the housing 1. An output interface 3 is fixedly connected to the outside of the housing 1. A fourth chute 18 is opened on the outside of the first fixed resistor 4. The second connecting block 26 is slidably connected to the fourth chute 18. A first chute 7 is opened on the outside of the second fixed resistor 5. The first connecting block 25 is slidably connected to the first chute 7;

[0037] A groove 27 is formed on the outer side of the rotating shaft 2. A convex block 24 is fixedly connected to the outer side of the rotating ring 6. The convex block 24 is slidably connected with the groove 27. A first wire connection hole 9, a third wire connection hole 22 and a fourth wire connection hole 23 are formed in the outer side of the housing 1. The first wire 8 is arranged inside the first wire connection hole 9. The third wire 20 is arranged inside the fourth wire connection hole 23. The fourth wire 21 is arranged inside the third wire connection hole 22. A second wire connection hole 17 is formed inside the rotating ring 6. The second wire 16 is arranged inside the second wire connection hole 17.

[0038] The working principle of an angle sensor proposed by the present invention is that when measuring the angular displacement or angular velocity by using the angle sensor, first fix the housing 1 at a corresponding appropriate position, and then connect the rotating shaft 2 to the rotating shaft of the device to be measured through a coupling. At this time, the rotating shaft 2 will rotate with the rotation of the rotating shaft of the device to be measured. During the rotation of the rotating shaft 2, since the convex block 24 is slidably connected with the groove 27, during the rotation of the rotating shaft 2, the rotating shaft 2 will drive the rotating ring 6 to rotate.

[0039] During the rotation of the rotating ring 6, the second connection block 26 on the second slider 12 will always make contact rotation on the first fixed resistor 4 through the fourth chute 18. The first connection block 25 on the first slider 10 will always make contact rotation on the second fixed resistor 5 through the first chute 7. At the same time, the first slider 10 and the second slider 12 are electrically connected through the second wire 16. Since the first fixed resistor 4 is not a complete ring and there is a gap inside the first fixed resistor 4, and because the resistance value of the first fixed resistor 4 is proportional to its angle R = ρkθ / 2πS (k is a constant), and the corresponding resistance values of the first slider 10, the second slider 12 and the second fixed resistor 5 are small enough, the change in the resistance value between the first wire 8 on the second fixed resistor 5 and the fourth wire 21 on the first fixed resistor 4 can be measured to calculate the rotation angle of the rotating ring 6, and further the angular displacement and angular velocity of the rotating shaft 2 on the angle sensor can be calculated, so as to accurately measure the angular displacement and angular velocity of the rotating device. The whole device has a simple structure, low manufacturing cost, and has the function of maintaining the shaft position signal, no measurement error, and high reliability in use.

[0040] Embodiment 2

[0041] As Figures 1 - 9As shown in the figure, the outer part of the rotating ring 6 is provided with a second sliding groove 14 and a third sliding groove 15. The first slider 10 is slidably connected to the third sliding groove 15, and the second slider 12 is slidably connected to the second sliding groove 14. One side of the first slider 10 away from the first connecting block 25 is fixedly connected to a first spring 11. The side of the first spring 11 away from the first slider 10 is fixedly connected to the rotating ring 6. One side of the second slider 12 away from the second connecting block 26 is fixedly connected to a second spring 13. The side of the second spring 13 away from the second slider 12 is fixedly connected to the rotating ring 6.

[0042] The working principle of an angle sensor proposed by the present invention is as follows. When in use, when the rotating shaft of the device to be measured needs to rotate in a single direction all the time, the rotating shaft 2 will drive the rotating ring 6 to rotate in a single direction. During the rotation of the rotating ring 6, the second connecting block 26 on the second slider 12 will always contact and rotate on the first fixed resistor 4 through the fourth sliding groove 18, and the first connecting block 25 on the first slider 10 will always contact and rotate on the second fixed resistor 5 through the first sliding groove 7. When the second connecting block 26 passes through the gap on the first fixed resistor 4, there will be an abnormal moment in the resistance value detected between the first wire 8 on the second fixed resistor 5 and the fourth wire 21 on the first fixed resistor 4. Two abnormal moments are a cycle, that is, at this time, the rotating shaft of the device to be measured rotates in a single direction for a full cycle. The change in the resistance value can be displayed by an oscilloscope, and then the rotated angle can be observed more intuitively. The whole process can ensure that the rotating shaft of the device to be measured rotates in a single direction all the time and can also accurately measure the angular displacement and angular velocity of the rotating device.

[0043] During the rotation of the rotating ring 6, the first spring 11 provides elastic force so that the first connecting block 25 on the first slider 10 can always be in close contact with the second fixed resistor 5, and the second spring 13 provides elastic force so that the second connecting block 26 on the second slider 12 can always be in close contact with the first fixed resistor 4, thereby maintaining the accuracy and stability of the measurement.

[0044] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined within the scope of the appended claims and their equivalents.

Claims

1. An angle sensor, comprising a housing (1), characterized in that: The housing (1) is internally rotatably connected to a rotating shaft (2), the rotating shaft (2) is externally slidably connected to a rotating ring (6), the rotating ring (6) is externally slidably connected to a first slider (10) and a second slider (12), and a second wire (16) for current conduction is provided between the first slider (10) and the second slider (12); The first slider (10) is externally fixedly connected to a first connection block (25); a side of the first connection block (25) away from the first slider (10) is slidably connected to a second fixed resistor (5); a first wire (8) is externally fixedly connected to the second fixed resistor (5); the housing (1) and the second fixed resistor (5) are fixedly connected; the second slider (12) is externally fixedly connected to a second connection block (26); a side of the second connection block (26) away from the second slider (12) is slidably connected to a first fixed resistor (4); a third wire (20) and a fourth wire (21) are externally fixedly connected to the first fixed resistor (4); and the housing (1) and the first fixed resistor (4) are fixedly connected.

2. An angle sensor according to claim 1, characterized in that: A sealing ring (19) is fixedly connected to the outside of the housing (1).

3. The angle sensor according to claim 1, characterized in that: The housing (1) is externally fixedly connected with an output interface (3).

4. The angle sensor according to claim 1, characterized in that: The rotating ring (6) is provided with a second sliding groove (14) and a third sliding groove (15) on the outside, the first sliding block (10) is slidably connected to the third sliding groove (15), and the second sliding block (12) is slidably connected to the second sliding groove (14).

5. The angle sensor according to claim 1, characterized in that: A first spring (11) is fixedly connected to a side of the first slider (10) away from the first connecting block (25), and a side of the first spring (11) away from the first slider (10) is fixedly connected to the rotating ring (6); a second spring (13) is fixedly connected to a side of the second slider (12) away from the second connecting block (26), and a side of the second spring (13) away from the second slider (12) is fixedly connected to the rotating ring (6).

6. The angle sensor according to claim 1, characterized in that: A fourth slide groove (18) is provided on the outside of the first fixed resistor (4), and the second connecting block (26) is slidably connected to the fourth slide groove (18); a first slide groove (7) is provided on the outside of the second fixed resistor (5), and the first connecting block (25) is slidably connected to the first slide groove (7).

7. The angle sensor according to claim 1, characterized in that: The rotating shaft (2) is provided with a groove (27) on the outside, and the rotating ring (6) is fixedly connected with a convex block (24) on the outside, and the convex block (24) is slidably connected to the groove (27).

8. The angle sensor according to claim 1, characterized in that: The housing (1) is provided with a first wire connection hole (9), a third wire connection hole (22) and a fourth wire connection hole (23) on the outside; the first wire (8) is arranged inside the first wire connection hole (9); the third wire (20) is arranged inside the fourth wire connection hole (23); the fourth wire (21) is arranged inside the third wire connection hole (22); the rotating ring (6) is provided with a second wire connection hole (17); and the second wire (16) is arranged inside the second wire connection hole (17).

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