Arc-shaped variable resistor detection device

Abstract

The utility model belongs to the technical field of resistance detection, and particularly relates to an arc-shaped variable resistance detection device, which comprises a power supply mechanism, a bearing mechanism, a pushing mechanism, a first detection mechanism and a second detection mechanism, and is characterized in that the first detection mechanism is used for detecting the rotation angle of a sliding contact in real time; one end of the second detection mechanism is connected with one fixed terminal of the resistor body, the other end of the second detection mechanism is connected with the sliding contact, and the second detection mechanism is used for detecting the resistance value of the arc-shaped variable resistor in real time when the sliding contact is at the corresponding angle. The rotation angle of the sliding contact is detected through the first detection mechanism, and the real-time resistance of the resistor body is dynamically detected through the second detection mechanism, so that the resistance value of the arc-shaped variable resistor with the sliding contact at different angles is detected, the data integrity in the detection process can be ensured, and the detection accuracy is improved. And the accuracy of the generated resistance-angle linear curve can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of resistance detection technology, and in particular to an arc-shaped variable resistance detection device. Background Technology

[0002] An arc-shaped variable resistor is an electronic component whose resistance value can be adjusted according to different needs. The arc-shaped variable resistor includes an arc-shaped resistive body and a sliding contact that is slidably disposed on the resistive body. The sliding contact is used to adjust the resistance value of the arc-shaped variable resistor.

[0003] To ensure the accuracy of the arc-shaped variable resistor during use, its linearity needs to be tested after assembly. Currently, this is mostly done using a multimeter. Specifically, the operator manually moves the sliding contact to different preset angles (e.g., taking a point every 10°, with only 5-10 sampling points in total). After each movement, the multimeter measures the resistance of the arc-shaped variable resistor at different angles. The operator then integrates the measurement results into a linear curve of resistance versus angle, judging the linearity of the entire arc-shaped variable resistor visually or through simple fitting. However, since the sampling points are discrete, the measurement results only represent the steady-state value after the sliding contact is stationary. The linearity corresponding to other positions on the arc-shaped variable resistor besides the sampling points is obtained through reasoning, which can easily lead to deviations in the obtained resistance-angle linear curve, making it difficult for the operator to judge the linearity of the arc-shaped variable resistor.

[0004] Therefore, the above problems urgently need to be solved. Utility Model Content

[0005] The purpose of this invention is to provide an arc-shaped variable resistor detection device to ensure the accuracy of the linear curve of resistance-angle.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An arc-shaped variable resistor detection device is used to perform linearity detection on an arc-shaped variable resistor. The arc-shaped variable resistor includes an arc-shaped resistive body and a sliding contact slidably disposed on the resistive body. The sliding contact is used to adjust the resistance value of the arc-shaped variable resistor. The device includes:

[0008] A power supply mechanism is electrically connected to the resistor and is used to supply current to the resistor.

[0009] A support mechanism is used to support the resistive element;

[0010] A pushing mechanism abuts against the sliding contact and is used to push the sliding contact from one end of the resistive element to the other end at a constant speed.

[0011] The first detection mechanism is used to detect the rotation angle of the sliding contact in real time.

[0012] The second detection mechanism has one end connected to one of the fixed terminals of the resistor and the other end connected to the sliding contact. The second detection mechanism is used to detect the resistance value of the arc-shaped variable resistor in real time when the sliding contact is at a corresponding angle.

[0013] Preferably, the supporting mechanism includes a supporting platform having an arcuate surface that fits against the resistive element.

[0014] Preferably, the bearing mechanism further includes a locking block, which is disposed at one end of the arc-shaped surface and can form a through-pass channel with the arc-shaped surface for the resistor to pass through, the through-pass channel being adapted to the resistor.

[0015] Preferably, a positioning pin is provided in the center of the side of the resistive element away from the sliding contact;

[0016] The arc-shaped surface is provided with positioning holes that are directly opposite to and adapted to the positioning pin.

[0017] Preferably, the support mechanism further includes a base, and the support platform is detachably disposed on the base.

[0018] Preferably, the pushing mechanism includes:

[0019] A servo motor is disposed on one side of the bearing mechanism along a first horizontal direction perpendicular to the sliding direction of the sliding contact. The servo motor has a rotating shaft that can rotate about its own axis, and the center of the circle corresponding to the resistive element is located on the rotation axis of the rotating shaft.

[0020] A connecting bracket is mounted on the rotating shaft;

[0021] A pusher is slidably disposed on the connecting frame, and the rotation axis of the pusher coincides with the rotation axis of the rotating shaft;

[0022] A driving component, disposed on the connecting frame, is used to drive the pushing component to move closer to or away from the sliding contact.

[0023] Preferably, the pusher includes:

[0024] The slider is slidably connected to the connecting frame;

[0025] A push-off portion is provided on the slider, and the push-off portion has a push-off space that can be adapted to engage with the sliding contact.

[0026] Preferably, the first detection mechanism is an angle sensor or angle encoder used to detect the rotation angle of the shaft.

[0027] Preferably, the power supply mechanism includes a constant current source and wires. The positive and negative terminals of the constant current source can be connected to the two fixed terminals of the resistor via wires to supply a constant current to the resistor.

[0028] Preferably, the arc-shaped variable resistor detection device further includes a driving mechanism, the driving end of which is connected to the second detection mechanism, and the driving mechanism is used to drive the second detection mechanism to move closer to or away from the resistive element.

[0029] The beneficial effects of this utility model are:

[0030] This utility model discloses an arc-shaped variable resistor detection device. An arc-shaped variable resistor is mounted on a supporting mechanism. Current is applied to the resistor via a power supply mechanism, and a pushing mechanism pushes the sliding contact to rotate uniformly from one end of the resistor to the other. During this process, as the rotation angle of the sliding contact changes, the resistance value of the arc-shaped variable resistor changes accordingly. At this time, a first detection mechanism detects the rotation angle of the sliding contact, and a second detection mechanism dynamically detects the real-time resistance of the resistor. This ensures that the resistance value of the arc-shaped variable resistor at different angles of the sliding contact is detected, thereby guaranteeing the integrity of the data during the detection process. Furthermore, it ensures the accuracy of generating a linear resistance-angle curve, which is beneficial for the operator to judge the linearity of the arc-shaped variable resistor. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the arc-shaped variable resistor in an embodiment of this utility model;

[0032] Figure 2 This is a schematic diagram of the arc-shaped variable resistor detection device in an embodiment of this utility model;

[0033] Figure 3 This is a schematic diagram of the structure of the bearing mechanism in an embodiment of this utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the pusher in an embodiment of this utility model.

[0035] In the picture:

[0036] 100. Arc-shaped variable resistor; 110. Resistor element; 120. Sliding contact; 130. Locating pin;

[0037] 1. Supporting mechanism; 11. Supporting platform; 111. Arc-shaped surface; 112. Positioning hole; 12. Locking block; 13. Base;

[0038] 2. Pushing mechanism; 21. Servo motor; 22. Connecting frame; 23. Pushing component; 231. Slider; 232. Pushing part; 233. Pushing space; 24. Driving component;

[0039] 3. Second testing unit; 4. Drive mechanism. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] Please see Figure 1The arc-shaped variable resistor 100 includes an arc-shaped resistor body 110 and a sliding contact 120 slidably disposed on the resistor body 110. The sliding contact 120 is used to adjust the resistance value of the arc-shaped variable resistor 100. To ensure the accuracy of the arc-shaped variable resistor 100 during use, the arc-shaped variable resistor 100 needs to be linearly tested after assembly. This embodiment proposes an arc-shaped variable resistor testing device for linearly testing the arc-shaped variable resistor 100 and ensuring the accuracy of the linear curve of the arc-shaped variable resistor 100 with respect to resistance value and angle.

[0045] Specifically, please refer to Figures 2 to 4 The arc-shaped variable resistor detection device includes a power supply mechanism, a support mechanism 1, a pushing mechanism 2, a first detection mechanism, and a second detection mechanism 3. The power supply mechanism is electrically connected to the resistor body 110 and is used to apply a constant current to the resistor body 110. The support mechanism 1 is used to support the resistor body 110. The pushing mechanism 2 abuts against the sliding contact 120 and is used to push the sliding contact 120 to rotate uniformly from one end of the resistor body 110 to the other end. The first detection mechanism is used to detect the rotation angle of the sliding contact 120 in real time. One end of the second detection mechanism 3 is connected to one of the fixed terminals of the resistor body 110, and the other end is connected to the sliding contact 120. The second detection mechanism 3 is used to detect the resistance value of the arc-shaped variable resistor 100 when the sliding contact 120 is at the corresponding rotation angle in real time.

[0046] It is understandable that when the arc-shaped variable resistor 100 is placed on the bearing mechanism 1, current is applied to the resistor body 110 through the power supply mechanism, and under the action of the pushing mechanism 2, the sliding contact 120 can be pushed to rotate uniformly from one end of the resistor body 110 to the other end. During this process, as the rotation angle of the sliding contact 120 changes, the resistance length of the arc-shaped variable resistor 100 changes, thereby changing the resistance value of the arc-shaped variable resistor 100. At this time, while the first detection mechanism detects the rotation angle of the sliding contact 120, the second detection mechanism 3 dynamically detects the corresponding resistance of the arc-shaped variable resistor 100 to ensure that the resistance value of the arc-shaped variable resistor 100 at different angles of the sliding contact 120 is detected. This ensures the integrity of the data during the detection process and the accuracy of the generated resistance-angle linear curve, which is beneficial for the measurer to judge the linearity of the arc-shaped variable resistor 100.

[0047] Preferably, the power supply mechanism includes a constant current source and wires. The positive and negative terminals of the constant current source can be connected to the two fixed terminals of the resistor 110 via the wires to supply a constant current to the resistor 110. This arrangement makes it easier to accurately reflect changes in resistance value through voltage changes during the detection process.

[0048] Furthermore, the second detection mechanism 3 is preferably a microcontroller in the prior art. The microcontroller can measure the real-time voltage of the arc-shaped variable resistor 100 through a built-in analog-to-digital converter (ADC). Since the current supplied to the resistor body 110 by the power supply mechanism is a constant current, it helps the microcontroller to calculate the real-time resistance of the arc-shaped variable resistor 100.

[0049] Furthermore, the detection device also includes a digital signal processor, which is connected to the first detection mechanism and the second detection mechanism 3 respectively. The digital signal processor can correlate the rotation angle of the sliding contact 120 and the real-time resistance of the arc-shaped variable resistor 100 to generate a linear curve of resistance-angle, so that the operator can observe the linearity of the arc-shaped variable resistor.

[0050] In this embodiment, please refer to Figure 3 The supporting mechanism 1 includes a support platform 11, which has an arc-shaped surface 111 that fits against the resistor 110. It can be understood that the arc-shaped surface 111 can ensure that the arc-shaped variable resistor 100 maintains its original curvature during the detection process, which can reduce nonlinear errors caused by improper support compared to a planar support platform 11.

[0051] During the testing process, when the second testing mechanism 3 is connected to one of the fixed terminals of the resistor 110, the end of the arc-shaped variable resistor 100 may be raised, which may affect the accuracy of the arc-shaped variable resistor 100 during the testing process.

[0052] Therefore, in this embodiment, the supporting mechanism 1 further includes a locking block 12, which is disposed at one end of the arc-shaped surface 111 and can form a through-channel for the resistor 110 to pass through, with the through-channel being adapted to the resistor 110. It can be understood that the cooperation between the locking block 12 and the arc-shaped surface 111 can limit the position of the resistor 110, thereby preventing the arc-shaped variable resistor 100 from tilting during the testing process, and thus ensuring the accuracy of the arc-shaped variable resistor 100 during the testing process.

[0053] It should be noted that the locking block 12 should be positioned outside the travel of the sliding contact 120 to prevent interference between the sliding contact 120 and the locking block 12 during rotation.

[0054] Furthermore, a positioning pin 130 is centrally located on the side of the resistor 110 away from the sliding contact 120. The positioning pin 130 facilitates positioning when installing the arc-shaped variable resistor 100. During the testing process, the positioning pin 130 is inserted into the positioning hole 112 on the arc-shaped surface 111, which is directly opposite and fits the positioning pin 130. This not only ensures that the resistor 110 fits the arc-shaped surface 111, but also serves as a limit to prevent the resistor 110 from shifting.

[0055] In addition, the support mechanism 1 also includes a base 13, on which the support platform 11 is detachably mounted. This arrangement facilitates the adjustment of the support platform 11 to different sizes according to different models of arc-shaped variable resistors 100, thereby improving the applicability of the arc-shaped variable resistor detection device. The support platform 11 is detachably connected to the base 13 by bolts or other means.

[0056] In this embodiment, the pushing mechanism 2 includes a servo motor 21, a connecting frame 22, a pushing member 23, and a driving member 24. The servo motor 21 is disposed on one side of the bearing mechanism 1 along a first horizontal direction perpendicular to the sliding direction of the sliding contact 120. The servo motor 21 has a rotating shaft capable of rotating around its own axis, and the center of the circle corresponding to the resistor 110 is located on the rotation axis of the rotating shaft. The pushing member 23 is slidably disposed on the connecting frame 22, and the rotation axis of the pushing member 23 coincides with the rotation axis of the rotating shaft. The driving member 24 is disposed on the connecting frame 22 and is used to drive the pushing member 23 to move closer to or away from the sliding contact 120. The driving mechanism 4 is preferably a driving component such as a linear cylinder in the prior art. Understandably, when detecting the arc-shaped variable resistor 100, the driving component 24 drives the pushing component 23 to approach the sliding contact 120 and make the pushing component 23 abut against the sliding contact 120. Under the action of the servo motor 21, the sliding contact 120 can be pushed to rotate. This setting can ensure the stability of the sliding contact 120 during rotation, thereby ensuring the accuracy of the linear curve of resistance-angle.

[0057] In this regard, please combine Figure 2 and Figure 4 Referring to the reference, the pusher 23 includes a slider 231 and a pusher portion 232. The slider 231 is slidably connected to the connecting frame 22. The pusher portion 232 is disposed on the slider 231 and has a pusher space 233 that is adapted to engage with the sliding contact 120. It can be understood that under the action of the driving member 24, the pusher portion 232 can be driven to move closer to the sliding contact 120, and the sliding contact 120 can be moved into the pusher space 233.

[0058] Preferably, the pushing part 232 includes two pushing rods, and the two pushing rods form a pushing space 233. Under the action of the driving member 24, the sliding contact 120 can enter the pushing space 233 and the two pushing rods abut against the two sides of the sliding contact 120.

[0059] In this embodiment, the first detection mechanism is an angle sensor or angle encoder used to detect the rotation angle of the shaft. It can be understood that when detecting different models of arc-shaped variable resistors 100, it is only necessary to detect the rotation angle of the shaft to obtain the rotation angle of the sliding contact 120, thereby avoiding errors when changing the first detection mechanism and further ensuring the accuracy of generating a linear curve of resistance-angle.

[0060] In this embodiment, the arc-shaped variable resistor detection device further includes a driving mechanism 4. The driving end of the driving mechanism 4 is connected to the second detection mechanism 3, and the driving mechanism 4 is used to drive the second detection mechanism 3 closer to or further away from the resistor body 110, so as to connect the second detection mechanism 3 to the fixed end of the arc-shaped variable resistor 100. This arrangement can avoid interference between the second detection mechanism 3 and the arc-shaped variable resistor 100 when the arc-shaped variable resistor 100 is installed on the arc-shaped surface 111. The driving mechanism 4 is preferably a driving component such as a linear cylinder in the prior art.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A curved variable resistor detection device for linear detection of a curved variable resistor (100), wherein the curved variable resistor (100) includes a curved resistive body (110) and a sliding contact (120) slidably disposed on the resistive body (110), the sliding contact (120) being used to adjust the resistance value of the curved variable resistor (100), characterized in that, include: A power supply mechanism is electrically connected to the resistor (110) and is used to supply current to the resistor (110); A support mechanism (1) is used to support the resistive element (110); The pushing mechanism (2) abuts against the sliding contact (120) and is used to push the sliding contact (120) from one end of the resistor (110) to the other end at a constant speed. The first detection mechanism is used to detect the rotation angle of the sliding contact (120) in real time; The second detection mechanism (3) has one end connected to one of the fixed terminals of the resistor (110) and the other end connected to the sliding contact (120). The second detection mechanism (3) is used to detect the resistance value of the arc-shaped variable resistor (100) when the sliding contact (120) is at the corresponding angle in real time.

2. The arc-shaped variable resistance detection device according to claim 1, wherein The supporting mechanism (1) includes a supporting platform (11) having an arcuate surface (111) that fits against the resistive element (110).

3. The arc-shaped variable resistance detection device according to claim 2, characterized in that, The bearing mechanism (1) further includes a locking block (12), which is disposed at one end of the arc-shaped surface (111) and can form a through-channel with the arc-shaped surface (111) for the resistor (110) to pass through. The through-channel is adapted to the resistor (110).

4. The arc-shaped variable resistance detection device according to claim 2, wherein A positioning pin (130) is centrally located on the side of the resistor (110) away from the sliding contact (120); The arc-shaped surface (111) is provided with a positioning hole (112) that is directly opposite to and adapted to the positioning pin (130).

5. The arc-shaped variable resistance detection device according to claim 2, characterized in that, The supporting mechanism (1) further includes a base (13), and the supporting platform (11) is detachably disposed on the base (13).

6. The arc-shaped variable resistance detection device according to claim 1, characterized in that, The pushing mechanism (2) includes: A servo motor (21) is disposed on one side of the bearing mechanism (1) along a first horizontal direction perpendicular to the sliding direction of the sliding contact (120). The servo motor (21) has a rotating shaft that can rotate about its own axis, and the center of the circle corresponding to the resistor (110) is located on the rotation axis of the rotating shaft. A connecting bracket (22) is disposed on the rotating shaft; A pusher (23) is slidably disposed on the connecting frame (22), and the rotation axis of the pusher (23) coincides with the rotation axis of the rotating shaft; A drive member (24), disposed on the connecting frame (22), is used to drive the push member (23) to move closer to or away from the sliding contact (120).

7. The arc-shaped variable resistance detection device according to claim 6, characterized in that, The pusher (23) includes: The slider (231) is slidably connected to the connecting frame (22); A push-off part (232) is provided on the slider (231), and the push-off part (232) has a push-off space (233) that can be adapted to engage with the sliding contact (120).

8. The arc-shaped variable resistance detection device according to claim 6, characterized in that, The first detection mechanism is an angle sensor or angle encoder used to detect the rotation angle of the shaft.

9. The arc-shaped variable resistance detection device according to claim 1, characterized in that, The power supply mechanism includes a constant current source and wires. The positive and negative terminals of the constant current source can be connected to the two fixed terminals of the resistor (110) through the wires to supply a constant current to the resistor (110).

10. The arc-shaped variable resistance detection device according to claim 1, characterized in that, The arc-shaped variable resistance detection device further includes a driving mechanism (4), the driving end of which is connected to the second detection mechanism (3), and the driving mechanism (4) is used to drive the second detection mechanism (3) to move closer to or away from the resistor (110).

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