A test apparatus to assist in detecting sensor sensitivity

Abstract

This utility model discloses a testing device for assisting in the detection of sensor sensitivity, comprising a base and a testing mechanism. A first bracket is adjustablely connected to the base, and the first bracket has a mounting area. The sensor is connected to the mounting area. The testing mechanism includes a test piece and a motor. The test piece has a testing area, with the sensor facing the testing area. Multiple slots are formed within the testing area. The test piece is connected to the output shaft of the motor, and the motor drives the multiple slots to sequentially pass through the sensor's transmitting end. This utility model provides a testing device for assisting in the detection of sensor sensitivity by using a motor to control the speed at which the slots pass through the sensor's transmitting end in real time, matching the required testing speed and interval time of the sensor.

Description

Technical Field

[0001] This utility model relates to the field of sensor detection, and in particular to a testing device for assisting in the detection of sensor sensitivity. Background Technology

[0002] In existing technologies, when testing the response speed and sensitivity of laser sensors, a test scheme based on a dedicated signal generator is commonly used.

[0003] The core of this testing method is to use a signal generator to generate a precise, controllable, and shape-specific excitation signal, and apply this signal to the input end of the sensor under test; at the same time, a data acquisition device is used to synchronously record the output response signal of the laser sensor; finally, the response speed and sensitivity of the sensor are quantitatively evaluated by analyzing characteristic parameters such as the time delay and amplitude variation relationship between the input excitation signal and the output response signal.

[0004] However, the rate of change of the excitation signal and the interval between excitation signals in continuous test cycles are usually inherent system settings or can only be adjusted within a very limited range. The lack of flexible and real-time adjustment leads to the uncontrollability or low adjustability of the test speed and interval time of this test method, which limits the test system's ability to adapt to different types of laser sensors and simulate the rate of signal change under diverse real-world application scenarios. Utility Model Content

[0005] The purpose of this invention is to provide a testing device that assists in detecting the sensitivity of a sensor. The device uses a motor to control the speed at which the groove passes through the sensor's transmitting end in real time, matching the required testing speed and interval time of the sensor.

[0006] The technical solution adopted by the auxiliary testing device for detecting sensor sensitivity disclosed in this utility model is:

[0007] The device includes a base and a testing mechanism. A first bracket is connected to the base at an adjustable position. The first bracket has an installation area. The sensor is connected to the installation area. The testing mechanism includes a test piece and a motor. The test piece has a test area. The sensor faces the test area. Multiple slots are opened in the test area. The test piece is connected to the output shaft of the motor. The motor drives the multiple slots to pass sequentially through the transmitting end of the sensor.

[0008] As a preferred embodiment, the multiple slots are arranged at intervals around the output shaft of the motor.

[0009] As a preferred embodiment, the slot extends through the test piece, a partition is fixedly connected to the output shaft of the motor, the test piece is fixedly connected to the partition, and the slot is located between the partition and the transmitting end of the sensor.

[0010] As a preferred embodiment, the test piece has a flange extending from it, and the test piece is fixedly connected to the partition plate via the flange.

[0011] As a preferred embodiment, a second bracket is fixedly connected to the motor, and the second bracket is adjustablely connected to the base. The second bracket adjusts the distance between the test piece and the sensor.

[0012] As a preferred embodiment, the first bracket adjusts the horizontal position of the sensor facing the test area.

[0013] As a preferred embodiment, the sensor is adjustable in position and connected to the mounting area, and the vertical position of the sensor facing the test area is adjusted.

[0014] The beneficial effects of the auxiliary testing device for detecting sensor sensitivity disclosed in this utility model are:

[0015] During testing, the sensor is connected to the first support. By adjusting the position of the first support on the base, the distance between the sensor's transmitter and the test area is adjusted. Multiple slots within the test area create a continuous height difference, while a motor drives the test piece, causing each slot to pass sequentially over the sensor's transmitter. The transit time for each slot is calculated using angular velocity. The sensor is connected to an external oscilloscope to observe and compare curves, testing whether the sensor's response speed is close to the slot's movement speed, thus achieving the testing objective. By controlling the motor's speed, the movement speed of each slot is adjusted in real time, changing the interval between two adjacent slots triggering the test sensor, matching the required response speed and sensitivity of the sensor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a testing device for assisting in the detection of sensor sensitivity according to this utility model.

[0017] Figure 2 This is a schematic diagram of the base and testing mechanism of a testing device for assisting in the detection of sensor sensitivity, according to this utility model.

[0018] Figure 3 This is a schematic diagram of the installation of the motor, partition, and test piece of a testing device for assisting in the detection of sensor sensitivity according to this utility model.

[0019] Figure 4 This is a cross-sectional view of a test piece for a testing device that assists in detecting the sensitivity of a sensor, according to this utility model. Detailed Implementation

[0020] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0021] Please refer to Figure 1 and Figure 2 .

[0022] This utility model discloses a testing device for assisting in the detection of sensor sensitivity, comprising a base 1 and a testing mechanism 3;

[0023] The top of the base 1 is provided with a plurality of first connecting holes 111 arranged at intervals. The plurality of first connecting holes 111 are arranged in a rectangular array. In this embodiment, the first connecting holes 111 are preferably threaded holes.

[0024] Furthermore, a first bracket 12 is connected to the base 1 in an adjustable position. In this embodiment, the cross-section of the first bracket 12 is preferably L-shaped. Two parallel first through slots 121 are provided on the first bracket 12. The first through slots 121 pass through the first bracket 12 and are close to the bottom of the first bracket 12. The bottom of the first bracket 12 is located at the top of the base 1. Two first positioning bolts are provided on the first bracket 12. The first positioning bolts pass through the first through slots 121 and are detachably connected to one of the first connecting holes 111.

[0025] The first bracket 12 is fixed to the base 1 by tightening the first positioning bolt. However, the first positioning bolt can be loosened and the first bracket 12 can be pushed to make the first positioning bolt slide in the first through groove 121, thereby adjusting the horizontal position of the first bracket 12 on the X-axis of the base 1, and then the first positioning bolt can be tightened again.

[0026] The first bracket 12 is provided with an installation area, and the installation area is provided with a plurality of second connecting holes 122 arranged at intervals. The plurality of second connecting holes 122 are arranged in a rectangular array. In this embodiment, the second connecting holes 122 are preferably threaded holes.

[0027] The sensor 2 is adjustable and connected to the mounting area. Two second positioning bolts are detachably connected to the sensor 2, and the second positioning bolts are detachably connected to one of the second connecting holes 122.

[0028] The sensor 2 is fixed in the installation area by tightening the second positioning bolt. However, the second positioning bolt can be removed from the second connecting hole 122, the vertical position of the sensor 2 on the Z-axis of the first bracket 12 can be adjusted, and then the second positioning bolt can be tightened again. Furthermore, by disassembling the first bracket 12 and replacing it with a first bracket 12 of a different specification, the detection equipment can be adapted to sensors of different specifications.

[0029] Please refer to Figures 1-4 .

[0030] The testing mechanism 3 includes a motor 31 and a test piece 33. In this embodiment, the motor 31 is preferably a servo motor, so that the rotation speed and rotation angle of the output shaft of the motor 31 can be controlled with high precision. A second bracket 32 ​​is fixedly connected to the motor 31. Two parallel second through slots 321 are opened on the second bracket 32, and the second through slots 321 pass through the second bracket 32. Two third positioning bolts are provided on the second bracket 32. The third positioning bolts pass through the second through slots 321 and are detachably connected to another first connecting hole 111.

[0031] By tightening the third positioning bolt, the motor 31 is fixed to the base 1 via the second bracket 32. However, by loosening the third positioning bolt and pushing the second bracket 32, the third positioning bolt can be slid in the second through groove 321, thereby adjusting the horizontal position of the second bracket 32 ​​on the Y-axis of the base 1. After adjusting the distance between the motor 31 and the first bracket 12, the third positioning bolt is tightened again.

[0032] A partition plate 311 is fixedly connected to the output shaft of the motor 31; a key bar is fixedly connected to the outer side of the output shaft of the motor 31; a mounting hole is passed through the center of the partition plate 311; a keyway is provided on the inner wall of the mounting hole; the partition plate 311 is sleeved on the outer side of the output shaft of the motor 31 through the mounting hole; and the key bar is slidably inserted into the keyway.

[0033] Furthermore, the partition 311 is provided with a first limiting bolt, which is fixedly connected to the output shaft of the motor 31. The partition 311 is fixedly connected to the output shaft of the motor 31 through the first limiting bolt, and the output shaft of the motor 31 drives the partition 311 to rotate synchronously through the key bar.

[0034] In this embodiment, the test piece 33 is preferably a hollow ring structure; the test piece 33 is provided with a test area, which surrounds the center of the test piece 33, and multiple slots 331 are arranged at intervals in the test area, which penetrate the test piece 33, and the multiple slots 331 are arranged around the center of the test piece 33.

[0035] Furthermore, a flange 332 extends from the test piece 33. The center of the flange 332 is coaxial with the center of the test piece 33. Multiple second limiting bolts are provided on the flange 332. The second limiting bolts pass through the flange 332 and are fixedly connected to the partition plate 311. The test piece 33 is fixedly connected to the partition plate 311 through the flange 332. Both the test piece 33 and the flange 332 are coaxial with the output shaft of the motor 31. Multiple slots 331 are arranged at intervals around the output shaft of the motor 31.

[0036] Furthermore, a through hole runs through the center of flange 332, allowing the user to directly remove the first limiting bolt and take off the partition plate 311 and test piece 33 through the through hole;

[0037] The sensor 2 is fixed in the installation area in a horizontal position by two second positioning bolts, so that the transmitting end of the sensor 2 faces the test area, and the slot 331 is located between the partition 311 and the transmitting end of the sensor 2.

[0038] A gap is created between the partition plate 311 and the test piece 33 by using flange 332, increasing the height difference between the surface of the test piece 33 and the surface of the partition plate 311. This allows the beam emitted by the transmitter of sensor 2 to more accurately detect the height difference between the surface of the partition plate 311 and the slot 331. Alternatively, the width of the gap can be adjusted according to the detection requirements of sensor 2 by replacing the flange 332 with a thinner or thicker one, thereby adjusting the height difference.

[0039] The light beam emitted by the transmitter of sensor 2 is reflected after hitting the surface of test piece 33 and is received by the receiver of sensor 2. When motor 31 drives partition 311 and test piece 33 to rotate, multiple slots 331 pass through the transmitter of sensor 2 in sequence, so that the light beam emitted by the transmitter of sensor 2 passes through the slots 331 and hits the surface of partition 311, is reflected and is received by the receiver of sensor 2. Using the height difference between test piece 33 and slot 331, sensor 2 is triggered, and the traversal time of each slot 331 is calculated by angular velocity. Sensor 2 is connected to an external oscilloscope to observe the comparison curve, thereby testing whether the response speed of sensor 2 is close to the moving speed of slot 331, thus achieving the purpose of detection.

[0040] The servo motor 31 can be used to control the rotation speed and rotation angle of its output shaft with high precision, thereby adjusting the moving speed of each slot 331 in real time, changing the interval between two adjacent slots 331 triggering the test sensor 2, and matching the test requirements of the response speed and sensitivity of the sensor 2.

[0041] By adjusting the horizontal position of the second bracket 32 ​​on the Y-axis on the base 1, the distance between the test piece 33 and the transmitter of the sensor 2 can be adjusted according to the detection requirements of the sensor 2.

[0042] By adjusting the horizontal position of the first bracket 12 on the X-axis of the base 1, the transmitting end of the sensor 2 is aligned with one of the slots 331 on the test piece 33;

[0043] When the test piece 33 rotates, the area closer to the center of the test piece 33 has a slower rotational linear speed, and the area farther away from the center of the test piece 33 has a faster rotational linear speed. By adjusting the vertical position of the sensor 2 on the Z-axis on the first bracket 12, the landing point of the beam emitted by the sensor 2 on the test piece 33 can be adjusted to be closer to or farther away from the center of the test piece 33, thereby improving the accuracy of the response speed and sensitivity of the test sensor 2.

[0044] The base 1 is covered with a housing 4. An opening is provided on one side of the housing 4, which is close to the first bracket 12. The opening facilitates the user to install the sensor 2 to be tested on the first bracket 12, and also facilitates the removal of the sensor 2 after testing from the first bracket 12. The top of the housing 4 is rotatably connected to a cover plate 41, which facilitates the user to debug the test equipment by opening the cover plate 41. In this embodiment, the housing 4 and the cover plate 41 are preferably made of multiple acrylic plates spliced ​​together.

[0045] This invention provides a testing device for assisting in the detection of sensor sensitivity. During testing, the sensor is connected to a first support. By adjusting the position of the first support on the base, the distance between the sensor's transmitter and the test area is adjusted. Multiple slots within the test area form a continuous height difference, while a motor drives the test piece to move, causing each slot to pass sequentially over the sensor's transmitter. The transit time for each slot is calculated using angular velocity. The sensor is connected to an external oscilloscope to observe and compare curves, testing whether the sensor's response speed is close to the slot's moving speed, thus achieving the detection purpose. By controlling the motor's speed, the moving speed of each slot is adjusted in real time, changing the interval between two adjacent slots triggering the test sensor, thus matching the required test response speed and sensitivity of the sensor.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A testing device for assisting in the detection of sensor sensitivity, used for testing sensors, characterized in that, The system includes a base and a testing mechanism. A first bracket is connected to the base in an adjustable position. The first bracket has an installation area, and the sensor is connected to the installation area. The testing mechanism includes a test piece and a motor. The test piece has a test area, the sensor faces the test area, and multiple slots are provided in the test area. The test piece is connected to the output shaft of the motor, and the motor drives the multiple slots to pass sequentially through the transmitting end of the sensor.

2. The testing device for assisting in the detection of sensor sensitivity as described in claim 1, characterized in that, The slots are arranged at intervals around the output shaft of the motor.

3. The testing device for assisting in the detection of sensor sensitivity as described in claim 2, characterized in that, The slot penetrates the test piece, a partition is fixedly connected to the output shaft of the motor, the test piece is fixedly connected to the partition, and the slot is located between the partition and the transmitter of the sensor.

4. The testing device for assisting in the detection of sensor sensitivity as described in claim 3, characterized in that, The test piece has a flange extending from it, and the test piece is fixedly connected to the partition plate through the flange.

5. A testing device for assisting in the detection of sensor sensitivity as described in any one of claims 1 or 4, characterized in that, A second bracket is fixedly connected to the motor. The second bracket is adjustable and connected to the base. The second bracket adjusts the distance between the test piece and the sensor.

6. A testing device for assisting in the detection of sensor sensitivity as described in any one of claims 1 or 4, characterized in that, The first bracket adjusts the sensor's horizontal position toward the test area.

7. The testing device for assisting in the detection of sensor sensitivity as described in claim 6, characterized in that, The sensor is adjustable in position and connected to the mounting area, allowing adjustment of the sensor's vertical position toward the test area.

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