Air throwing impact type calibration equipment of acceleration sensor

Abstract

The invention relates to the field of acceleration sensor calibration, in particular to a gas throwing impact type calibration device of an acceleration sensor, which comprises an impact mechanism, a gas throwing mechanism, a gas throwing mechanism, a gas throwing mechanism, a gas throwing mechanism, a gas throwing mechanism and a gas throwing mechanism, an acceleration sensor and a reference acceleration sensor which need to be tested are mounted at the top of the mounting block through two fixing pieces; the speed reducing mechanism comprises a limiting frame mounted at the top of the impact cylinder, a friction pad is arranged on one side of a mounting block, a mounting groove is formed in the mounting block, a driving assembly and a sliding assembly are arranged in the mounting groove, and the driving assembly is used for driving the sliding assembly, so that the sliding assembly drives the friction pad to be attached to the side face of the limiting frame; and through the speed reducing mechanism, the descending speed of the mounting block and the two acceleration sensors on the mounting block is greatly reduced, the impact force caused by descending is reduced, and the problem that the acceleration sensors and the buffer pad are damaged due to the impact force caused by descending is avoided.

Description

Technical Field

[0001] The invention relates to the field of acceleration sensor calibration, in particular to an air-throwing impact calibration device for an acceleration sensor. Background Art

[0002] An accelerometer is an electronic device used to measure the acceleration of an object. It can detect static (such as gravity) or dynamic (such as vibration, impact) acceleration. Its core principle is based on Newton's second law (force = mass × acceleration), and it converts acceleration into electrical signal output through internal sensitive elements (such as piezoelectric materials, micro-electromechanical systems MEMS). It is widely used in consumer electronics (mobile phone screen rotation), automobiles (airbag triggering), industrial equipment (vibration monitoring), aerospace (aircraft attitude control) and other fields.

[0003] Since the measurement accuracy of the acceleration sensor is directly related to the safety and reliability of the equipment, the acceleration sensor needs to be calibrated using an air-throwing impact calibration device during the production process. The air-throwing impact calibration device provides a high-precision acceleration simulation environment to ensure the accuracy of the sensor in actual applications.

[0004] In the prior art, when the air-throwing impact calibration device impacts the carrier on which the acceleration sensor is installed, the acceleration sensor will be driven to rise. However, when the acceleration sensor descends, although a buffer is provided on the top of the air-throwing impact calibration device, the buffer is mostly a buffer pad or a spring, which can form a certain buffer. However, when the acceleration sensor is at a high height after being impacted, the acceleration sensor will generate a large impact force on the buffer during the descent process, which is likely to damage the acceleration sensor and the buffer.

[0005] Therefore, an air-throwing impact calibration device for an acceleration sensor is proposed. Summary of the invention

[0006] In view of the problem in the above or prior art that although a buffer is provided on the top of the air-throwing impact calibration equipment, most of the buffers are buffer pads or springs, which can form a certain buffer, but when the acceleration sensor is at a high height after being impacted, the acceleration sensor will generate a large impact force on the buffer during the descent process, which is likely to damage the acceleration sensor and the buffer, the present invention is proposed.

[0007] Therefore, an object of the present invention is to provide an air-throwing impact calibration device for an acceleration sensor.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising: The impact mechanism comprises an impact cylinder, an impact assembly is arranged on the impact cylinder, a mounting block is arranged on the top of the impact cylinder, and an acceleration sensor to be tested and a reference acceleration sensor are mounted on the top of the mounting block through two fixing members; The deceleration mechanism comprises a limit frame installed on the top of the impact cylinder, a friction pad is arranged on one side of the mounting block, a mounting groove is arranged on the mounting block, a driving assembly and a sliding assembly are arranged inside the mounting groove, and the driving assembly is used to drive the sliding assembly so that the sliding assembly drives the friction pad to fit with the side of the limit frame.

[0009] As a preferred solution of the air-throwing impact calibration device of the acceleration sensor of the present invention, the impact assembly includes an air cylinder mounted on the impact cylinder, an air pipe is connected to the air cylinder, an end of the air pipe away from the air cylinder extends from the bottom of the impact cylinder to the inside of the impact cylinder and is connected to the inside of the impact cylinder, a projectile is arranged inside the impact cylinder, the projectile is located at the top of the end of the air pipe away from the air cylinder, a column is arranged at the bottom of the mounting block, and an end of the column away from the mounting block extends to the inside of the impact cylinder; An exhaust port is provided on the side wall of the impact tube, and the exhaust port is located between the column and the projectile.

[0010] As a preferred solution of the air-throwing impact calibration device of the acceleration sensor of the present invention, two magnets are arranged inside the air cylinder, the two magnets have the same poles, and the two magnets are respectively located at one end where the projectile and the column are close to each other.

[0011] As a preferred solution of the air-throwing impact calibration device of the acceleration sensor of the present invention, a buffer pad is arranged on the top of the impact cylinder.

[0012] As a preferred solution of the air-throwing impact calibration device of the acceleration sensor of the present invention, there is a certain gap between the projectile and the inner wall of the impact tube, and the gap is relatively small.

[0013] As a preferred solution of the air-throwing impact calibration equipment of the acceleration sensor of the present invention, the driving assembly includes a first vertical plate arranged inside the mounting groove, the end of the first vertical plate away from the impact cylinder passes through the mounting groove and is connected to the positioning plate, the side of the first vertical plate close to the friction pad is connected to the driving block, and the driving block is provided with a first inclined surface and a first plane.

[0014] As a preferred solution of the air-throwing impact calibration device of the acceleration sensor of the present invention, the driving component also includes a slide groove opened on the mounting block, the slide groove is connected to the mounting groove, a slider is arranged inside the slide groove, and one side of the slider is connected to the first vertical plate.

[0015] As a preferred solution of the air-throwing impact calibration equipment of the acceleration sensor of the present invention, the sliding assembly includes a horizontal plate detachably connected to the friction pad, a second vertical plate is connected to the top of the horizontal plate, a telescopic rod and a spring are connected to the side of the second vertical plate away from the first vertical plate, the spring is sleeved on the surface of the telescopic rod, and the ends of the telescopic rod and the spring away from the second vertical plate are connected to the inner wall of the mounting groove.

[0016] As a preferred solution of the air-throwing impact calibration device of the acceleration sensor of the present invention, the sliding assembly further comprises a force-bearing block arranged on the side of the second vertical plate close to the first vertical plate, and the force-bearing block is provided with a second inclined surface and a second plane; The second inclined surface corresponds to the first inclined surface.

[0017] As a preferred solution of the air-throwing impact calibration device of the acceleration sensor of the present invention, the spring force is greater than the sum of the weight of the slider, the weight of the first vertical plate and the weight of the driving block.

[0018] The beneficial effects of the air-throwing impact calibration equipment for the acceleration sensor of the present invention are as follows: the impact component can drive the mounting block to rise, and then drive the acceleration sensor to be tested and the reference acceleration sensor on the top of the mounting block to rise, so that the two acceleration sensors measure acceleration, and by comparing the test data of the acceleration sensor to be tested with the reference acceleration sensor, the accuracy of the measurement result of the acceleration sensor to be tested is judged; when the mounting block moves to a suitable height, the driving component is triggered, so that the driving component drives the sliding component to run, and the sliding component drives the friction pad to fit with the side of the limit frame; when the mounting block and the two acceleration sensors thereon descend under the action of gravity, under the action of the friction force of the friction pad and the limit frame, the descending speed of the mounting block and the two acceleration sensors thereon is greatly reduced, the impact force caused by the descent is reduced, and the problem of damage to the acceleration sensor and the buffer pad due to the impact force of the descent is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the air-throwing impact calibration equipment for the acceleration sensor; Figure 2 It is a schematic diagram of the overall partial cross-sectional structure of the air-throwing impact calibration device for the acceleration sensor; Figure 3 It is a schematic diagram of the cross-sectional structure of the mounting block of the air-throwing impact calibration device of the acceleration sensor; Figure 4 It is a schematic diagram of the structure of the driving assembly of the air-throwing impact calibration device of the acceleration sensor; Figure 5 It is a schematic diagram of the structure of the sliding assembly of the air-throwing impact calibration equipment of the acceleration sensor; In the figure: 1, impact mechanism; 11, impact cylinder; 111, exhaust port; 112, buffer pad; 113, gap; 12, impact assembly; 121, air cylinder; 1211, magnet; 122, air pipe; 123, projectile; 124, column; 13, mounting block; 2. Speed ​​reduction mechanism; 21. Limiting frame; 22. Friction pad; 23. Mounting slot; 24. Driving assembly; 241. First vertical plate; 242. Positioning plate; 243. Driving block; 244. First inclined plane; 245. First plane; 246. Slide groove; 247. Sliding block; 25. Sliding assembly; 251. Horizontal plate; 252. Second vertical plate; 253. Telescopic rod; 254. Spring; 255. Force block; 256. Second inclined plane; 257. Second plane. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0022] Example 1, reference Figures 1 to 5 , which is the first embodiment of the present invention, and provides an air-throwing impact calibration device for an acceleration sensor, which can achieve the effect of testing the acceleration sensor, and comprises an impact mechanism 1, which comprises an impact cylinder 11, an impact assembly 12 is arranged on the impact cylinder 11, a mounting block 13 is arranged on the top of the impact cylinder 11, an acceleration sensor to be tested and a reference acceleration sensor are installed on the top of the mounting block 13 through two fixing members, a deceleration mechanism 2 is installed on the mounting block 13, the deceleration mechanism 2 can be one or two, preferably two, the deceleration mechanism 2 comprises a limit frame 21 installed on the top of the impact cylinder 11, a friction pad 22 is arranged on one side of the mounting block 13, a mounting groove 23 is arranged on the mounting block 13, a driving assembly 24 and a sliding assembly 25 are arranged inside the mounting groove 23, and the driving assembly 24 is used to drive the sliding assembly 25, so that the sliding assembly 25 drives the friction pad 22 to fit with the side of the limit frame 21; The acceleration sensor and the two fixing parts are not shown in the drawings of the specification. Specifically, the corresponding fixing parts can be installed on the top of the mounting block 13 according to the size of the acceleration sensor in actual production; The fixing member is a conventional device that can fix acceleration sensors of different sizes, such as an electric-controlled clamp, etc. The accuracy of the measurement result of the acceleration sensor to be tested is determined by comparing the data tested on the acceleration sensor to be tested with the data tested on the reference acceleration sensor. Among them, the limit frame 21 is concave, and the limit frame 21 can limit the mounting block 13, so that the mounting block 13 can only move up and down in a straight line position, thereby ensuring that the acceleration sensor to be tested and the reference acceleration sensor can only move up and down in a straight line, thereby increasing the accuracy of the test. At the same time, the limit frame 21 is an adjustable limit frame 21, so that the limit frame 21 can be adjusted in height according to the size of the air pressure, so that the limit frame 21 can be suitable for the detection of various accelerations; The impact component 12 can drive the mounting block 13 to rise, and then drive the acceleration sensor to be tested and the reference acceleration sensor on the top of the mounting block 13 to rise, so that the two acceleration sensors measure acceleration, and by comparing the test data of the acceleration sensor to be tested with the reference acceleration sensor, the accuracy of the measurement result of the acceleration sensor to be tested is judged. When the mounting block 13 moves to a suitable height, the driving component 24 is triggered, so that the driving component 24 drives the sliding component 25 to run, and the sliding component 25 drives the friction pad 22 to fit with the side of the limit frame 21. When the mounting block 13 and the two acceleration sensors thereon descend under the action of gravity, under the action of the friction force between the friction pad 22 and the limit frame 21, its descending speed is greatly reduced, and the impact force caused by its descent is reduced, thereby avoiding the problem of damage to the acceleration sensor and the buffer pad 112 due to the impact force of the descent.

[0023] Furthermore, the impact assembly 12 includes an air cylinder 121 installed on the impact cylinder 11. The air cylinder 121 can be located at the bottom of the impact cylinder 11 or at the side of the impact cylinder 11, which can be selected according to the convenience of use. The air cylinder 121 is connected with an air pipe 122, and the end of the air pipe 122 away from the air cylinder 121 extends from the bottom of the impact cylinder 11 to the inside of the impact cylinder 11 and is connected to the inside of the impact cylinder 11. A projectile 123 is arranged inside the impact cylinder 11, and the projectile 123 is located at the top of the end of the air pipe 122 away from the air cylinder 121. A column 124 is arranged at the bottom of the mounting block 13, and the end of the column 124 away from the mounting block 13 extends to the inside of the impact cylinder 11. An exhaust port 111 is opened on the side wall of the impact cylinder 11, and the exhaust port 111 is located between the column 124 and the projectile 123. Among them, the gas cylinder 121 is provided with a valve, and when the valve is opened, the gas cylinder 121 can spray high-pressure gas, and other parts are adjustable at the same time, which is a very mature existing equipment; The projectile 123 corresponds to the tube portion of the impact tube 11 , and the projectile 123 only needs to be able to move up and down in a straight line inside the impact tube 11 .

[0024] Furthermore, two magnets 1211 are arranged inside the air cylinder 121. The two magnets 1211 are of the same level, and the two magnets 1211 are respectively located at one end where the projectile 123 and the column 124 are close to each other. When the projectile 123 rises, the projectile 123 drives the magnet 1211 thereon to approach the magnet 1211 of the column 124. By utilizing the principle of repulsion between magnets 1211 of the same level, the projectile 123 will not directly hit the column 124, thereby avoiding the problem of damage to the column 124 and the projectile 123. Among them, the magnet 1211 is detachably connected to the projectile 123 and the column 124, and can be installed using stainless steel bolts. When the magnetic force of the magnet 1211 is very weak during long-term use, it can be disassembled and replaced. Although the magnetic force will weaken over time, as long as it can be ensured that when the high-pressure gas impacts the projectile 123 and makes the projectile 123 rise, the repulsive force between the two magnets 1211 of the same level can ensure that the two magnets 1211 of the same level will not fit together.

[0025] Furthermore, a buffer pad 112 is provided on the top of the impact cylinder 11. The buffer pad 112 is used to form a buffer for the mounting block 13 and the two acceleration sensors thereon when the mounting block 13 and the two acceleration sensors thereon descend under the action of gravity, thereby protecting the mounting block 13 and the two acceleration sensors thereon and avoiding damage to the mounting block 13 and the two acceleration sensors thereon.

[0026] Furthermore, there is a certain gap 113 between the projectile 123 and the inner wall of the impact tube 11, and the gap 113 is relatively small; Among them, the gap 113 is used for the discharge of gas. When the projectile 123 descends and the gas cylinder 121 is closed, the projectile 123 squeezes the gas at the bottom of the impact cylinder 11, so that the gas is discharged along the gap 113 and the exhaust port 111. The gap 113 is smaller, which slows down the speed of gas discharge. The gas provides an upward thrust to the projectile 123, so that the projectile 123 will not fall to the bottom of the impact cylinder 11 quickly, causing a huge impact on the bottom of the impact cylinder 11, thereby causing damage to the bottom of the impact cylinder 11. At the same time, the smaller gap 113 also reduces the waste of gas when the high-pressure gas impacts the projectile 123.

[0027] In this embodiment, the acceleration sensor to be tested and the reference acceleration sensor are mounted on the mounting block 13 through two fixings, the valve on the air cylinder 121 is opened, and the high-pressure air inside the air cylinder 121 is transported to the bottom of the impact cylinder 11 through the air pipe 122, and pushes the projectile 123 to rise. The projectile 123 pushes the column 124 to rise by utilizing the repulsive force of the magnets 1211 of the same level. The column 124 drives the two acceleration sensors thereon to rise through the mounting block 13, so that the two acceleration sensors measure acceleration. When the mounting block 13 and the two acceleration sensors rise to the maximum height, they automatically descend under the action of their own gravity, and are buffered by the buffer pad 112. The accuracy of the measurement result of the acceleration sensor to be tested is judged by comparing the data tested on the acceleration sensor to be tested with the data on the reference acceleration sensor. If the error is large, calibration is carried out, and if it is small, it can be used.

[0028] In summary, in this embodiment, a device for detecting an acceleration sensor is provided. By comparing the data tested on the acceleration sensor to be tested with the data tested on the reference acceleration sensor, the accuracy of the measurement result of the acceleration sensor to be tested is determined. The device has a simple structure and a simple testing process.

[0029] Example 2, reference Figures 1 to 5 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a driving assembly 24 and a sliding assembly 25 of an air-throwing impact calibration device for an acceleration sensor, which reduces the falling speed of the mounting block 13 and the two sensors. The driving assembly 24 includes a first vertical plate 241 arranged inside the mounting groove 23. The end of the first vertical plate 241 away from the impact cylinder 11 passes through the mounting groove 23 and is fixedly connected to a positioning plate 242. The positioning plate 242 is horizontally arranged, and the length of the positioning plate 242 is greater than the width of the mounting groove 23, that is, the positioning plate 242 will not enter the interior of the mounting groove 23. The first vertical plate 241 is fixedly connected to a driving block 243 on one side close to the friction pad 22, and the driving block 243 is provided with a first inclined surface 244 and a first plane 245.

[0030] Furthermore, the driving assembly 24 further includes a slide groove 246 provided on the mounting block 13, the slide groove 246 is communicated with the mounting groove 23, a slider 247 is provided inside the slide groove 246, and one side of the slider 247 is connected to the first vertical plate 241; The slide groove 246 is a through groove, and the slide groove 246 matches the slider 247. The cross-sections of the slide groove 246 and the slider 247 are trapezoidal, so that the slider 247 can only move vertically up and down, thereby ensuring that the first vertical plate 241 can only move vertically up and down.

[0031] Further, the sliding assembly 25 includes a horizontal plate 251 detachably connected to the friction pad 22, a second vertical plate 252 is connected to the top of the horizontal plate 251, an L-shaped plate is formed between the second vertical plate 252 and the horizontal plate 251, a telescopic rod 253 and a spring 254 are connected to the side of the second vertical plate 252 away from the first vertical plate 241, the spring 254 is sleeved on the surface of the telescopic rod 253, and the ends of the telescopic rod 253 and the spring 254 away from the second vertical plate 252 are both connected to the inner wall of the mounting groove 23; The friction pad 22 must be detachably connected. Due to multiple friction tests, the friction pad 22 is easily worn. If it cannot be replaced, the deceleration effect of the friction pad 22 on the device will become worse and worse, resulting in the mounting block 13 and the two acceleration sensors thereon falling too fast, causing damage to the buffer pad 112 and the two acceleration sensors. In addition, the friction pad 22 is relatively low in cost compared to the acceleration sensor. Among them, the setting of the telescopic rod 253 ensures that the spring 254 can only be compressed in a straight line, thereby ensuring the stability of the spring 254. At the same time, the setting of the telescopic rod 253 also ensures that the second vertical plate 252 can only move horizontally and linearly, so that the force block 255 on the second vertical plate 252 can only move horizontally and linearly, so that the force block 255 and the driving block 243 correspond to each other in position. At the same time, since the second vertical plate 252 can only move horizontally, the horizontal plate 251 can only move horizontally, and the horizontal plate 251 drives the friction pad 22 to move horizontally, ensuring the contact and non-contact between the friction pad 22 and the limit frame 21.

[0032] Furthermore, the sliding assembly 25 also includes a force block 255 arranged on the side of the second vertical plate 252 close to the first vertical plate 241, and a second inclined surface 256 and a second plane 257 are provided on the force block 255. The second inclined surface 256 corresponds to the first inclined surface 244, so that the first inclined surface 244 can squeeze the second inclined surface 256.

[0033] Furthermore, the elastic force of the spring 254 is greater than the sum of the weight of the slider 247, the weight of the first vertical plate 241, and the weight of the driving block 243. The elastic force of the spring 254 is greater than the sum of the weight of the slider 247, the weight of the first vertical plate 241, and the weight of the driving block 243, so that in the initial state, the positioning plate 242 at the top of the first vertical plate 241 does not contact the top of the mounting block 13. The positioning plate 242 at the bottom of the first vertical plate 241 contacts the plane at the bottom of the mounting block 13, and the other side of the bottom of the first vertical plate 241 contacts the top of the impact cylinder 11.

[0034] The rest of the structure is the same as that of Example 1.

[0035] When in use, the limit frame 21 is adjusted to a suitable height. When testing, the mounting block 13 drives the two acceleration sensors and the deceleration mechanism 2 to rise. When the positioning plate 242 at the top of the first vertical plate 241 contacts the top of the limit frame 21, since the mounting block 13 still has an upward inertia force, the mounting block 13 will continue to rise. When the first vertical plate 241 descends, the first vertical plate 241 drives the driving block 243 thereon to descend, so that the first inclined surface 244 of the driving block 243 squeezes the second inclined surface 256 of the force block 255, so that the force block 255 moves toward the side of the limit frame 21, and the force block 255 squeezes the telescopic rod 253 and the spring 25 through the second vertical plate 252. 4, so that the telescopic rod 253 and the spring 254 are contracted, and at the same time, the second vertical plate 252 drives the friction pad 22 to move toward the side of the limit frame 21 through the horizontal plate 251. When the first plane 245 on the driving block 243 contacts the second plane 257 of the force-bearing block 255, the friction pad 22 contacts the side of the limit frame 21. When the mounting block 13 descends, the friction pad 22 contacts the side of the limit frame 21. The friction between the friction pad 22 and the limit frame 21 greatly slows down the falling speed of the mounting block 13, reduces the impact force caused by the descent of the mounting block 13 and the two acceleration sensors thereon, and avoids the problem of damage to the acceleration sensor and the buffer pad 112 due to the impact force of the descent; Due to the interaction between the first plane 245 and the second plane 257, the friction pad 22 will not reset during the descending process. When the positioning block at the bottom of the first vertical plate 241 contacts the top of the impact cylinder 11, the first vertical plate 241 rises, and the first vertical plate 241 drives the driving block 243 to rise, thereby causing the first plane 245 on the driving block 243 and the second plane 257 on the force block 255 to be misaligned. At this time, under the action of the elastic force of the spring 254, the second vertical plate 252 resets, and the second vertical plate 252 lifts the driving block 243 through the force block 255. At the same time, the second vertical plate 252 drives the friction pad 22 to reset through the horizontal plate 251, so that the friction pad 22 does not contact the side of the limit frame 21. In summary, in this embodiment, a deceleration mechanism 2 for acceleration sensor calibration and detection is provided. When rising, the deceleration mechanism 2 does not operate, so that the mounting block 13 can drive the acceleration sensor to be tested and the reference acceleration sensor to rise synchronously. When rising to the maximum height, the deceleration mechanism 2 operates, so that the friction pad 22 contacts the side of the limit frame 21. The friction force between the friction pad 22 and the limit frame 21 greatly slows down the falling speed of the mounting block 13, reducing the impact force caused by the descent of the mounting block 13 and the two acceleration sensors thereon, thereby avoiding the problem of damage to the acceleration sensor and the buffer pad 112 due to the impact force of the descent.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An air-throwing impact calibration device for an acceleration sensor, characterized in that: include, An impact mechanism (1) comprises an impact cylinder (11), an impact assembly (12) being arranged on the impact cylinder (11), a mounting block (13) being arranged on the top of the impact cylinder (11), an acceleration sensor to be tested and a reference acceleration sensor being mounted on the top of the mounting block (13) via two fixing members; A speed reduction mechanism (2) comprises a limit frame (21) mounted on the top of an impact cylinder (11); a friction pad (22) is arranged on one side of the mounting block (13); a mounting groove (23) is arranged on the mounting block (13); a driving component (24) and a sliding component (25) are arranged inside the mounting groove (23); the driving component (24) is used to drive the sliding component (25), so that the sliding component (25) drives the friction pad (22) to fit with the side of the limit frame (21).

2. The air-throwing impact calibration device for an acceleration sensor as claimed in claim 1, characterized in that: The impact assembly (12) comprises an air cylinder (121) mounted on the impact cylinder (11), the air cylinder (121) being connected to an air pipe (122), one end of the air pipe (122) away from the air cylinder (121) extending from the bottom of the impact cylinder (11) to the inside of the impact cylinder (11) and being in communication with the inside of the impact cylinder (11), a projectile (123) being arranged inside the impact cylinder (11), the projectile (123) being located at the top of the end of the air pipe (122) away from the air cylinder (121), and a column (124) being arranged at the bottom of the mounting block (13), the end of the column (124) away from the mounting block (13) extending to the inside of the impact cylinder (11); An exhaust port (111) is provided on the side wall of the impact cylinder (11), and the exhaust port (111) is located between the column (124) and the projectile (123).

3. The air-throwing impact calibration device for an acceleration sensor as claimed in claim 2, characterized in that: Two magnets (1211) are arranged inside the gas cylinder (121), the two magnets (1211) have the same polarity, and the two magnets (1211) are respectively located at one end of the projectile (123) and the column (124) close to each other.

4. The air-throwing impact calibration device for an acceleration sensor as claimed in claim 3, characterized in that: A buffer pad (112) is provided on the top of the impact cylinder (11).

5. The air-throwing impact calibration device for an acceleration sensor as claimed in claim 4, characterized in that: There is a certain gap (113) between the projectile (123) and the inner wall of the impact cylinder (11), and the gap (113) is relatively small.

6. The air-throwing impact calibration device for an acceleration sensor as claimed in claim 5, characterized in that: The driving assembly (24) comprises a first vertical plate (241) arranged inside the mounting groove (23); an end of the first vertical plate (241) away from the impact cylinder (11) passes through the mounting groove (23) and is connected to a positioning plate (242); a side of the first vertical plate (241) close to the friction pad (22) is connected to a driving block (243); and a first inclined surface (244) and a first plane (245) are provided on the driving block (243).

7. The air-throwing impact calibration device for an acceleration sensor as claimed in claim 6, characterized in that: The driving assembly (24) further comprises a slide groove (246) provided on the mounting block (13), the slide groove (246) being in communication with the mounting groove (23), a sliding block (247) being provided inside the slide groove (246), and one side of the sliding block (247) being connected to the first vertical plate (241).

8. The air-throwing impact calibration device for an acceleration sensor as claimed in claim 7, characterized in that: The sliding assembly (25) comprises a horizontal plate (251) detachably connected to the friction pad (22); a second vertical plate (252) is connected to the top of the horizontal plate (251); a telescopic rod (253) and a spring (254) are connected to a side of the second vertical plate (252) away from the first vertical plate (241); the spring (254) is sleeved on the surface of the telescopic rod (253); and ends of the telescopic rod (253) and the spring (254) away from the second vertical plate (252) are both connected to the inner wall of the mounting groove (23).

9. The air-throwing impact calibration device for an acceleration sensor as claimed in claim 8, characterized in that: The sliding assembly (25) further comprises a force-bearing block (255) disposed on a side of the second vertical plate (252) close to the first vertical plate (241), and the force-bearing block (255) is provided with a second inclined surface (256) and a second plane (257); The second inclined surface (256) corresponds to the first inclined surface (244).

10. The air-throwing impact calibration device for an acceleration sensor according to claim 9, characterized in that: The elastic force of the spring (254) is greater than the sum of the gravity of the slider (247), the gravity of the first vertical plate (241), and the gravity of the driving block (243).

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