High-precision three-axis acceleration sensing device

Abstract

The utility model discloses a high-precision three-axis acceleration sensing device which comprises an installation carrier and three single-axis paper-based acceleration sensors, an installation assembly is arranged in the installation carrier, and the installation assembly comprises an inner fixing frame, three fixing plates, a threaded sleeve, a locking screw, a locking plate, two guide columns and an installation through hole; the three fixing plates are fixedly connected to the interior of the inner fixing frame. According to the utility model, the inner fixing frame, the fixing plate and other structures are arranged in the installation carrier, so that the integral rigidity of the sensor is enhanced, and during installation, the locking plate and the fixing plate are matched, so that the locking and fixing of the single-shaft paper-based acceleration sensor can be realized, the position stability of the single-shaft paper-based acceleration sensor is ensured, and the reliability of the sensor is improved. The situation of measurement data deviation is avoided, and the precision of the sensor is improved.

Description

Technical Field

[0001] This utility model relates to an acceleration sensing device, specifically a high-precision triaxial acceleration sensing device, belonging to the field of acceleration sensor technology. Background Technology

[0002] An accelerometer is a highly sensitive device capable of measuring changes in acceleration in the surrounding environment. It is an important component in applications such as automotive safety, smart products, GPS navigation, and aviation. Primarily based on silicon, it consists of a mass block, elastic element, damper, sensing element, and adaptation circuitry. It converts acceleration signals into corresponding electrical signals and can be used to measure the magnitude of acceleration in multiple directions.

[0003] A Chinese utility model patent (publication number: CN209198491U) discloses a multi-axis paper-based accelerometer, which consists of three single-axis paper-based accelerometers mounted on three adjacent planes of a paper-based mounting carrier to form a triaxial paper-based accelerometer (X-axis, Y-axis, and Z-axis). This accelerometer utilizes the easy folding and deformation characteristics of paper to reduce the difficulty of the manufacturing process and takes advantage of the environmentally friendly properties of paper. Compared with traditional silicon-based accelerometers, it reduces costs without affecting sensitivity and does not cause environmental pollution, making it green and environmentally friendly.

[0004] Compared to traditional silicon-based sensors, it does show significant advantages in terms of green environmental protection. However, the paper-based structure it uses also has some shortcomings that cannot be ignored: the strength and hardness of the paper-based structure are relatively low, which brings many inconveniences to the installation of the sensor. Not only is it easy to be damaged by external forces during the installation process, but it is also difficult to find a suitable installation method to ensure the stability of the structure, which may lead to deviations in measurement data and affect measurement accuracy. Therefore, a high-precision triaxial acceleration sensing device is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a high-precision triaxial acceleration sensing device to solve one of the problems mentioned in the background art.

[0006] This utility model is implemented by the following technical solution: a high-precision triaxial acceleration sensing device, including a mounting carrier and three single-axis paper-based acceleration sensors. The mounting carrier is provided with a mounting assembly, which includes an inner fixing frame, three fixing plates, a threaded sleeve, a locking screw, a locking plate, two guide posts, and a mounting through hole.

[0007] The three fixing plates are respectively fixedly connected to the inside of the inner fixing frame. The threaded sleeve is fixedly connected to the outer wall of the locking plate. The mounting through hole is opened inside the fixing plate and the locking plate and corresponds to the position of the threaded sleeve. The two guide posts are symmetrically fixedly connected to the fixing plate. The locking plate is slidably connected to the outer wall of the two guide posts. The single-axis paper-based accelerometer is attached to the opposite surface of the locking plate and the fixing plate. The locking screw passes through the mounting through hole and is threaded into the inside of the threaded sleeve.

[0008] As a further preferred embodiment of this technical solution: both the locking plate and the fixing plate have anti-slip textures on their opposing surfaces.

[0009] As a further preferred embodiment of this technical solution: the inner fixing frame is fixedly connected to the interior of the mounting carrier, and the mounting carrier has opening slots on three adjacent planes.

[0010] As a further preferred embodiment of this technical solution: the three uniaxial paper-based accelerometers are located on three adjacent planes of the mounting carrier and within the opening slots.

[0011] As a further preferred embodiment of this technical solution, the bottom of the mounting carrier is provided with an output through hole.

[0012] As a further preferred embodiment of this technical solution: the uniaxial paper-based accelerometer includes a mass block, a paper-based carrier, a carbon film resistor, a signal adapter, and a signal output unit;

[0013] The mass block is mounted on the end of the paper-based carrier, and the carbon film resistor and signal adapter are both mounted on the paper-based carrier. The signal adapter is electrically connected to the carbon film resistor and the signal output unit.

[0014] As a further preferred embodiment of this technical solution: the other end of the paper-based carrier is fixed with a fixing part, and the fixing part has two U-shaped positioning grooves.

[0015] As a further preferred embodiment of this technical solution: the fixing part is located between the locking plate and the fixing plate, and the guide post is located inside the U-shaped positioning groove.

[0016] Advantages of this utility model:

[0017] 1. This utility model inserts the fixing part of the single-axis paper-based accelerometer between the fixing plate and the locking plate, then connects the locking screw with the threaded sleeve, and rotates the locking screw clockwise. The threaded sleeve drives the locking plate to move closer to the fixing plate, thereby achieving the clamping and fixing of the single-axis paper-based accelerometer. After installation, the three single-axis paper-based accelerometers are located on three adjacent planes of the mounting carrier.

[0018] 2. This utility model enhances the overall rigidity of the sensor by setting up an internal fixing frame and fixing plate inside the mounting carrier. Moreover, during installation, the locking plate and fixing plate can lock and fix the single-axis paper-based accelerometer, ensuring the stability of the single-axis paper-based accelerometer position, avoiding measurement data deviation, and improving the accuracy of the sensor. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the installation component structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the installation position of the uniaxial paper-based accelerometer of this utility model;

[0023] Figure 4 This is a schematic diagram of the locking plate structure of this utility model.

[0024] In the diagram: 101. Mounting component; 11. Inner fixing frame; 12. Fixing plate; 13. Threaded sleeve; 14. Locking screw; 15. Locking plate; 16. Guide post; 17. Mounting through hole; 19. Anti-slip texture; 30. Single-axis paper-based accelerometer; 31. Mass block; 32. Paper-based carrier; 33. Carbon film resistor; 34. U-shaped positioning groove; 35. Signal adapter; 36. Signal output section; 37. Fixing section; 40. Mounting carrier; 41. Opening groove; 42. Output through hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example

[0027] Please see Figures 1-4This utility model provides a technical solution: a high-precision triaxial acceleration sensing device, including a mounting carrier 40 and three single-axis paper-based acceleration sensors 30. The mounting carrier 40 is internally provided with a mounting assembly 101, which includes an inner fixing frame 11, three fixing plates 12, a threaded sleeve 13, a locking screw 14, a locking plate 15, two guide posts 16 and a mounting through hole 17.

[0028] Three fixing plates 12 are fixedly connected to the inside of the inner fixing frame 11, and threaded sleeves 13 are fixedly connected to the outer wall of the locking plate 15. The mounting through hole 17 is opened inside the fixing plate 12 and the locking plate 15 and corresponds to the position of the threaded sleeve 13. The locking screw 14 passes through the mounting through hole 17 and is threaded to the inside of the threaded sleeve 13. The single-axis paper-based accelerometer 30 is attached to the opposite surface of the locking plate 15 and the fixing plate 12. The head of the locking screw 14 is close to the mounting carrier 40. After the locking screw 14 is connected to the threaded sleeve 13, the locking screw 14 is rotated clockwise to engage with the threaded sleeve 13. At this time, the threaded sleeve 13 drives the locking plate 15 to move closer to the fixing plate 12, thereby achieving the clamping and fixing of the single-axis paper-based accelerometer 30.

[0029] Two guide posts 16 are symmetrically fixedly connected to the fixed plate 12, and the locking plate 15 is slidably connected to the outer side wall of the two guide posts 16. When the locking plate 15 approaches the fixed plate 12, the locking plate 15 slides smoothly along the guide posts 16. The guide posts 16 provide precise guidance for the locking plate 15, ensuring that the locking plate 15 can effectively clamp and fix the uniaxial paper-based accelerometer 30.

[0030] In this embodiment, specifically: anti-slip textures 19 are provided on the opposing surfaces of the locking plate 15 and the fixing plate 12. The anti-slip textures 19 can enhance the friction between the locking plate 15, the fixing plate 12 and the single-axis paper-based accelerometer 30, thereby enhancing the stability of the single-axis paper-based accelerometer 30.

[0031] In this embodiment, specifically: the inner fixing frame 11 is fixedly connected to the inside of the mounting carrier 40, and the three adjacent planes of the mounting carrier 40 are provided with opening slots 41. The three single-axis paper-based accelerometers 30 are located on the three adjacent planes of the mounting carrier 40 and are located in the opening slots 41, so that the opening slots 41 will not affect the action generated by the three single-axis paper-based accelerometers 30.

[0032] In this embodiment, specifically: the single-axis paper-based accelerometer 30 includes a mass block 31, a paper-based carrier 32, a carbon film resistor 33, a signal converter 35, and a signal output unit 36;

[0033] Mass block 31 is installed at the end of paper base carrier 32. Carbon film resistor 33 and signal adapter 35 are both installed on paper base carrier 32. Signal adapter 35 is electrically connected to carbon film resistor 33 and signal output unit 36.

[0034] In this utility model, the single-axis paper-based accelerometer 30 is prior art. Its mass block 31, paper-based carrier 32, carbon film resistor 33, signal transfer part 35, fixing part 37 and signal output part 36 are all prior art and are disclosed in the utility model patent with announcement number CN209198491U. Therefore, its working principle, material selection and installation method will not be described in detail.

[0035] The bottom of the mounting carrier 40 has an output through hole 42, and the signal output sections 36 of the three single-axis paper-based accelerometers 30 are all connected to external measuring instruments through the output through hole 42.

[0036] In this embodiment, specifically: a fixing part 37 is fixed to the other end of the paper-based carrier 32. Two U-shaped positioning grooves 34 are provided on the fixing part 37. The fixing part 37 is located between the locking plate 15 and the fixing plate 12. The guide post 16 is located inside the U-shaped positioning groove 34. The guide post 16 can be avoided by the U-shaped positioning groove 34. At the same time, when installing the single-axis paper-based accelerometer 30, the stability of the single-axis paper-based accelerometer 30 can be enhanced by the U-shaped positioning groove 34 being locked to the outside of the guide post 16.

[0037] In terms of working principle or structural principle, during use, the fixing part 37 of the single-axis paper-based accelerometer 30 is inserted between the fixing plate 12 and the locking plate 15. The single-axis paper-based accelerometer 30 is clamped to the outside of the guide post 16 through the U-shaped positioning groove 34. Then, the locking screw 14 is inserted into the mounting through hole 17. After the locking screw 14 is aligned with the threaded sleeve 13, the locking screw 14 is rotated clockwise to engage with the threaded sleeve 13. At this time, the threaded sleeve 13 drives the locking plate 15 to move closer to the fixing plate 12, thereby achieving the clamping and fixing of the single-axis paper-based accelerometer 30. After installation, the three single-axis paper-based accelerometers 30 are located on three adjacent planes of the mounting carrier 40.

[0038] Compared with the prior art, this utility model enhances the overall rigidity of the sensor by setting up an inner fixing frame 11 and a fixing plate 12 inside the mounting carrier 40. Moreover, during installation, the locking plate 15 and the fixing plate 12 can lock and fix the single-axis paper-based accelerometer 30, ensuring the stability of the position of the single-axis paper-based accelerometer 30, avoiding measurement data deviation, and improving the accuracy of the sensor.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision triaxial acceleration sensing device, characterized in that, It includes a mounting carrier (40) and three single-axis paper-based accelerometers (30). The mounting carrier (40) is internally provided with a mounting assembly (101). The mounting assembly (101) includes an inner fixing frame (11), three fixing plates (12), a threaded sleeve (13), a locking screw (14), a locking plate (15), two guide posts (16), and a mounting through hole (17). The three fixing plates (12) are respectively fixedly connected to the inside of the inner fixing frame (11), the threaded sleeve (13) is fixedly connected to the outer side wall of the locking plate (15), the mounting through hole (17) is opened inside the fixing plate (12) and the locking plate (15) and corresponds to the position of the threaded sleeve (13), the two guide posts (16) are symmetrically fixedly connected to the fixing plate (12), the locking plate (15) is slidably connected to the outer side wall of the two guide posts (16), the single-axis paper-based accelerometer (30) is attached to the opposite surface of the locking plate (15) and the fixing plate (12), and the locking screw (14) passes through the mounting through hole (17) and is threadedly connected to the inside of the threaded sleeve (13).

2. The high-precision triaxial acceleration sensing device according to claim 1, characterized in that, The locking plate (15) and the fixing plate (12) are both provided with anti-slip texture (19).

3. The high-precision triaxial acceleration sensing device according to claim 2, characterized in that, The inner fixing frame (11) is fixedly connected to the inside of the mounting carrier (40), and the three adjacent planes of the mounting carrier (40) are provided with opening slots (41).

4. A high-precision triaxial acceleration sensing device according to claim 3, characterized in that, The three uniaxial paper-based accelerometers (30) are located on three adjacent planes of the mounting carrier (40) and within the opening slot (41).

5. A high-precision triaxial acceleration sensing device according to claim 4, characterized in that, The bottom of the mounting carrier (40) is provided with an output through hole (42).

6. A high-precision triaxial acceleration sensing device according to claim 1, characterized in that, The single-axis paper-based accelerometer (30) includes a mass block (31), a paper-based carrier (32), a carbon film resistor (33), a signal converter (35), and a signal output unit (36). The mass block (31) is installed at the end of the paper-based carrier (32), the carbon film resistor (33) and the signal converter (35) are both installed on the paper-based carrier (32), and the signal converter (35) is electrically connected to the carbon film resistor (33) and the signal output unit (36).

7. A high-precision triaxial acceleration sensing device according to claim 6, characterized in that, The other end of the paper-based carrier (32) is fixed with a fixing part (37), and two U-shaped positioning grooves (34) are provided on the fixing part (37).

8. A high-precision triaxial acceleration sensing device according to claim 7, characterized in that, The fixing part (37) is located between the locking plate (15) and the fixing plate (12), and the guide post (16) is located inside the U-shaped positioning groove (34).

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