Acceleration sensor test bench for vehicle

Abstract

The utility model discloses an acceleration sensor test bench for a vehicle, and relates to the technical field of sensor test. Comprising a mounting base, a vertical plate is fixed to one end of the upper surface of the mounting base, a motor is fixed to one side of the vertical plate, and a transmission shaft is fixed to an output shaft of the motor; a fan is arranged in an opening in the bottom end of the test box, and a heater is mounted on the inner wall of the other end of the test box; and the clamping assembly is fixed at one end of the transmission shaft. According to the acceleration sensor test bed for the vehicle, the test box is arranged on the test bed, the fan and the heater are arranged in the test box, the test result of an acceleration sensor in a high-temperature environment can be simulated, the detection precision of the device is improved, the clamping assembly is arranged on the transmission shaft of the motor, and the acceleration sensor is clamped and limited; therefore, the device can simulate the test results of the acceleration sensor under different rotating speeds of the automobile.

Description

Technical Field

[0001] The utility model relates to the technical field of sensor testing, in particular to an acceleration sensor testing platform for vehicles. Background Art

[0002] An accelerometer is a sensor that can sense acceleration and convert it into a usable output signal. It has the advantages of accurate measurement, stable performance, high reliability, and flexible use. It is widely used in many fields.

[0003] The utility model with publication number CN 220120837 U discloses a vehicle acceleration sensor test bench, including a main body mechanism, a clamping test mechanism and a convenient support mechanism, wherein the clamping test mechanism is located at the upper end of the main body mechanism, and the convenient support mechanism is located at the lower end of the main body mechanism. The main body mechanism includes a storage box, an electric push rod 1 and a push rod 1, wherein the electric push rod 1 is fixedly installed at the upper end of the storage box, and the push rod 1 is fixedly installed at the upper end of the electric push rod 1. The main body mechanism also includes a test bench surface, a box door and a door handle.

[0004] The above utility model clamps and limits the acceleration sensor by setting a clamping mechanism, and adjusts the height and supporting performance of the test bench by a convenient supporting mechanism, but does not set a detection method for the acceleration sensor, and it is unclear how to test the acceleration sensor. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a vehicle acceleration sensor test bench to solve the existing problems.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a vehicle acceleration sensor test bench, comprising:

[0007] A mounting seat, wherein a vertical plate is fixed to one end of the upper surface of the mounting seat, a motor is fixed to one side of the vertical plate, and a transmission shaft is fixed to the output shaft of the motor;

[0008] A test box, wherein the test box is fixed to the other end of the upper surface of the mounting seat, one end of the transmission shaft is inserted into one end of the test box and is movably connected to the test box through a bearing, a transparent cover is provided on the top of the test box, a filter screen is provided at the bottom opening of the test box, the filter screen is fixed to the lower surface of the mounting seat, a fan is provided in the bottom opening of the test box, and a heater is installed on the inner wall of the other end of the test box to provide a high temperature environment for the test of the acceleration sensor;

[0009] The clamping assembly is fixed to one end of the transmission shaft and is arranged inside the test box for clamping the acceleration sensor.

[0010] Preferably, the clamping assembly includes a fixed plate fixed to one end of the transmission shaft, with clamping plates symmetrically distributed at both ends of one side of the fixed plate, a dovetail slider fixed to one side of the clamping plate, a dovetail groove is opened in the middle of one side of the fixed plate, the dovetail slider is located inside the dovetail groove, and a screw rod is connected through the screw groove in the middle of the dovetail slider, one end of the screw rod is connected to the inner wall of one end of the dovetail groove, and the other end of the screw rod passes through the inner wall of the other end of the dovetail groove and is fixed with a knob.

[0011] Preferably, a limiting member is provided on one side of the knob, and the two clamping plates are connected via a reinforcing member.

[0012] Preferably, the limiting member includes a limiting clamping plate arranged at one end of the fixed plate, one end of the limiting clamping plate is provided with arc-shaped teeth, and the arc-shaped teeth are adapted to the tooth grooves opened on the peripheral side of the knob, and a limiting slider is fixed to the other end of the limiting clamping plate, and a limiting groove is opened at one end of the fixed plate, the limiting slider is located inside the limiting groove, and one end of the limiting slider is connected to the inner wall of the limiting groove through a spring.

[0013] Preferably, the reinforcement comprises a stud fixed to the middle of the other end of the clamping plate, positioning columns are arranged on both sides of the stud, and a nut is sleeved on the outer side of the stud.

[0014] Preferably, the reinforcement member further comprises two connecting plates, the two connecting plates are connected by an elastic band, three through holes are formed on the connecting plates, and the three through holes correspond to the studs and the two positioning columns respectively. Beneficial Effects

[0015] The utility model provides a vehicle acceleration sensor test bench. Compared with the prior art, it has the following beneficial effects:

[0016] 1. The vehicle acceleration sensor test bench is provided with a test box on the test bench, and a fan and a heater are arranged inside the test box, which can simulate the test results of the acceleration sensor in a high temperature environment, thereby improving the detection accuracy of the device. A clamping assembly is arranged on the drive shaft of the motor, and the clamping assembly drives two clamping plates to move toward each other through a knob and a screw rod, clamping the acceleration sensor to a limit position, so that the device can simulate the test results of the acceleration sensor at different speeds of the car.

[0017] 2. The vehicle acceleration sensor test bench is provided with a limit piece on the fixed plate of the clamping assembly. The limit clamping plate on the limit piece clamps the knob to limit the position under the action of the spring, so as to prevent the knob from driving the clamping plate to move when the acceleration sensor is rotated and detected, so that the acceleration sensor maintains a stable limit position. A reinforcement piece is provided between the two clamping plates. The two connecting pieces on the reinforcement piece are limited on the studs and positioning columns on the clamping plates. The elastic band between the two connecting pieces plays a role in strengthening the clamping limit, thereby further improving the stability of the acceleration sensor test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic top view of the test box structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the clamping assembly of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the position limiting member of the utility model;

[0022] Figure 5 This is a schematic diagram of the reinforcement structure of the utility model.

[0023] In the figure: mounting base 1, vertical plate 11, motor 12, transmission shaft 13, test box 2, transparent cover plate 21, filter screen plate 22, fan 23, heater 24, clamping assembly 3, fixing plate 31, clamping plate 32, dovetail slider 33, dovetail slide 34, screw rod 35, knob 36, limiter 37, limit card plate 371, limit slider 372, limit slide 373, spring 374, reinforcement 38, stud 381, positioning column 382, ​​connecting piece 383, nut 384, elastic band 385 DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides two technical solutions:

[0026] Figure 1-3 A first embodiment is shown: a vehicle acceleration sensor test bench, comprising:

[0027] A mounting base 1, a vertical plate 11 is fixed to one end of the upper surface of the mounting base 1, a motor 12 is fixed to one side of the vertical plate 11, and a transmission shaft 13 is fixed to the output shaft of the motor 12;

[0028] The test box 2 is fixed to the other end of the upper surface of the mounting base 1, one end of the transmission shaft 13 is inserted into one end of the test box 2 and is movably connected to the test box 2 through a bearing, a transparent cover plate 21 is provided at the top of the test box 2, and a plurality of air holes are provided on the transparent cover plate 21, a filter screen plate 22 is provided at the bottom opening of the test box 2, and the filter screen plate 22 is fixed to the lower surface of the mounting base 1, a fan 23 is provided in the bottom opening of the test box 2, and the fan 23 is located above the filter screen plate 22, and the filter screen plate 22 filters out dust in the air, and a heater 24 is installed on the inner wall of the other end of the test box 2 to provide a high temperature environment for the test of the acceleration sensor;

[0029] The clamping assembly 3 is fixed to one end of the transmission shaft 13, and the clamping assembly 3 is arranged inside the test box 2, and is used to clamp the acceleration sensor. The clamping assembly 3 includes a fixed plate 31 fixed to one end of the transmission shaft 13, and clamping plates 32 are symmetrically distributed at both ends of one side of the fixed plate 31. The two clamping plates 32 cooperate to clamp and limit the acceleration sensor. A dovetail slider 33 is fixed to one side of the clamping plate 32, and a dovetail groove 34 is opened in the middle of one side of the fixed plate 31. The dovetail slider 33 is located inside the dovetail groove 34, and the dovetail slider 33 and the dovetail slider The groove 34 cooperates to play a guiding and limiting role, so that the clamping plate 32 maintains linear movement and prevents the clamping plate 32 from separating from the fixed plate 31. A screw rod 35 is connected to the screw groove in the middle of the dovetail slider 33. The screw grooves on the two dovetail sliders 33 rotate in opposite directions. One end of the screw rod 35 is connected to the inner wall of one end of the dovetail slot 34, and the other end of the screw rod 35 passes through the inner wall of the other end of the dovetail slot 34 and is fixed with a knob 36. The screw rod 35 is driven to rotate by the knob 36. The screw rod 35 cooperates with the screw groove in the dovetail slider 33 to drive the two clamping plates 32 to move toward each other.

[0030] Figure 3-5The second embodiment is shown, which is different from the first embodiment in that a limiting member 37 is provided on one side of the knob 36, and the two clamping plates 32 are connected by a reinforcing member 38. The limiting member 37 includes a limiting clamping plate 371 arranged at one end of the fixed plate 31, and one end of the limiting clamping plate 371 is provided with arc-shaped teeth, which are adapted to the tooth grooves provided on the side of the knob 36, and can limit the knob 36 to prevent the knob 36 from rotating. A limiting slider 372 is fixed to the other end of the limiting clamping plate 371, and a limiting groove 373 is provided at one end of the fixed plate 31. The limiting slider 372 is located inside the limiting groove 373. The limiting slider 372 cooperates with the limiting groove 373 to play a role of limiting and guiding, so that the limiting clamping plate 371 maintains linear movement, and at the same time limits the limiting clamping plate 371 on the fixed plate 31, and one end of the limiting slider 372 is passed through a spring 374. The spring 374 is connected to the inner wall of the limiting slide groove 373, so that the arc-shaped teeth on the limiting card plate 371 can automatically mesh with the tooth grooves on the knob 36, thereby playing a role in stabilizing the limiting position. The reinforcing member 38 includes a stud 381 fixed to the middle of the other end of the clamping plate 32, and positioning columns 382 are arranged on both sides of the stud 381. A nut 384 is sleeved on the outer side of the stud 381. The reinforcing member 38 also includes two connecting pieces 383, and the two connecting pieces 383 are connected by an elastic band 385. Three through holes are opened on the connecting piece 383, and the three through holes correspond to the stud 381 and the two positioning columns 382 respectively. The connecting piece 383 connects the stud 381 and the positioning columns 382 through the three through holes thereon. The setting of the nut 384 limits the connecting piece 383, and the elastic band 385 applies a tensioning force to the two clamping plates 32 in a tensioned state, thereby playing a role in strengthening the clamping and limiting position.

[0031] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0032] When in use, first place the acceleration sensor between the two clamping plates 32, then move the limit clamping plate 371 until the limit clamping plate 371 is separated from the knob 36, at which time the spring 374 is compressed and stressed, and then the knob 36 is turned, the knob 36 drives the screw rod 35 to rotate, and the screw rod 35 drives the two clamping plates 32 to move toward each other until the two clamping plates 32 contact the acceleration sensor, clamping the acceleration sensor to a limit position, and then release the limit clamping plate 371, the limit clamping plate 371 is reset under the action of the spring 374, and the arc-shaped teeth on it are engaged with the tooth grooves on the knob 36, which plays a limiting role. Then, stretch the elastic band 385, and sleeve the connecting pieces 383 at both ends of the elastic band 385 onto the stud 381 and the positioning column 382 through the through holes, and then connect it to the stud 381 through the nut 384, limit the connecting piece 383, and the acceleration sensor is stably installed at this time. Then, start the heater 24 and the fan 23 to simulate the environment of high-temperature airflow, and finally start the motor 12. The motor 12 drives the acceleration sensor on the clamping assembly 3 to rotate through the transmission shaft 13, simulating the acceleration sensor test results at different vehicle speeds, and collects the detection data through the detection sensor set in the test box 2.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle acceleration sensor test bench, characterized in that ,include: A mounting seat, wherein a vertical plate is fixed to one end of the upper surface of the mounting seat, a motor is fixed to one side of the vertical plate, and a transmission shaft is fixed to the output shaft of the motor; A test box, wherein the test box is fixed to the other end of the upper surface of the mounting seat, one end of the transmission shaft is inserted into one end of the test box and is movably connected to the test box through a bearing, a transparent cover is provided on the top of the test box, a filter screen is provided at the bottom opening of the test box, the filter screen is fixed to the lower surface of the mounting seat, a fan is provided in the bottom opening of the test box, and a heater is installed on the inner wall of the other end of the test box to provide a high temperature environment for the test of the acceleration sensor; The clamping assembly is fixed to one end of the transmission shaft and is arranged inside the test box for clamping the acceleration sensor.

2. The vehicle acceleration sensor test bench according to claim 1, characterized in that: The clamping assembly includes a fixed plate fixed at one end of the transmission shaft, with clamping plates symmetrically distributed at both ends of one side of the fixed plate, a dovetail slider fixed to one side of the clamping plate, a dovetail slot is opened in the middle of one side of the fixed plate, the dovetail slider is located inside the dovetail slot, and a screw rod is connected through the screw groove in the middle of the dovetail slider, one end of the screw rod is connected to the inner wall of one end of the dovetail slot, and the other end of the screw rod passes through the inner wall of the other end of the dovetail slot and is fixed with a knob.

3. The vehicle acceleration sensor test bench according to claim 2, characterized in that: A limiting member is arranged on one side of the knob, and the two clamping plates are connected via a reinforcing member.

4. The vehicle acceleration sensor test bench according to claim 3, characterized in that: The limiting member includes a limiting clamping plate arranged at one end of the fixed plate, one end of the limiting clamping plate is provided with arc-shaped teeth, and the arc-shaped teeth are adapted to the tooth grooves opened on the peripheral side of the knob, and the other end of the limiting clamping plate is fixed with a limiting slider, one end of the fixed plate is provided with a limiting slot, the limiting slider is located inside the limiting slot, and one end of the limiting slider is connected to the inner wall of the limiting slot through a spring.

5. The vehicle acceleration sensor test bench according to claim 3, characterized in that: The reinforcement member comprises a stud fixed at the middle of the other end of the clamping plate, positioning columns are arranged on both sides of the stud, and a nut is sleeved on the outer side of the stud.

6. The vehicle acceleration sensor test bench according to claim 3, characterized in that: The reinforcement also includes two connecting plates, which are connected by an elastic band. Three through holes are formed on the connecting plates, and the three through holes correspond to the studs and the two positioning columns respectively.

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