An automatic positioning three-component sensor

Abstract

This utility model discloses an automatic positioning three-component sensor, including a base and a sealing cover. The sealing cover, which encloses the three-component sensor, is mounted on the top of the base. A circuit board is mounted at the center of the top of the base, and a main sensor is mounted at the center of the top of the circuit board. A triaxial accelerometer is mounted on the back end of one top end of the circuit board, and a triaxial magnetometer is mounted on the front end of the top end of the circuit board. A connector is mounted on the other top end of the circuit board, with wiring attached to one end. A heat insulation pad is adhered to the inside of the sealing cover. This utility model, through the coordinated operation of components such as the base, sealing cover, heat insulation pad, dehumidifying housing, mounting block, mounting groove, and silica gel desiccant, effectively maintains a dry and stable internal environment for the three-component sensor. Furthermore, the heat insulation pad blocks the influence of external temperature fluctuations, thereby significantly improving the sensor's moisture-proof and heat-insulating performance, ensuring its measurement accuracy and reliability during long-term operation in complex environments.

Description

Technical Field

[0001] This utility model relates to the field of three-component sensor technology, specifically an automatic positioning three-component sensor. Background Technology

[0002] A three-component sensor is a sensor that can simultaneously measure the components of a physical field or vector in three orthogonal directions (usually the X, Y, and Z axes) in three-dimensional space, thereby enabling complete recording and reconstruction of the spatial vector information of the physical field, such as for monitoring ground vibrations, the Earth's magnetic field, or acceleration.

[0003] Existing three-component sensors commonly suffer from insufficient internal environmental stability due to external moisture intrusion and temperature fluctuations in complex environments. Specifically, they exhibit poor moisture resistance and heat insulation performance, which seriously affects the measurement accuracy and reliability of the sensors during long-term operation. Utility Model Content

[0004] The purpose of this invention is to provide an automatic positioning three-component sensor. By coordinating the components such as a base, sealing cover, heat insulation pad, dehumidifying housing, mounting block, mounting groove, and silica gel desiccant, this invention can effectively maintain the dry and stable internal environment of the three-component sensor. Furthermore, the heat insulation pad blocks the influence of external temperature fluctuations, thereby significantly improving the sensor's moisture-proof and heat-insulating performance and ensuring its measurement accuracy and reliability during long-term operation in complex environments. This addresses the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An automatic positioning three-component sensor includes a base and a sealing cover. The sealing cover for covering the three-component sensor is installed on the top of the base. A circuit board is installed at the top center of the base. A main sensor is installed at the top center of the circuit board. A three-axis accelerometer is installed on the back end of one top end of the circuit board. A three-axis magnetometer is installed on the front end of one top end of the circuit board. A connector is installed at the other top end of the circuit board. A wiring is installed at one end of the connector. A heat insulation pad is bonded to the inside of the sealing cap, and a through-type interface is provided on one side of the sealing cap. One end of the wiring through-type interface is threaded onto the connector. Two sets of dehumidification housings are provided on the front and back of the top end of the base. Several sets of through holes are opened on both sides of the dehumidification housing. Silica gel desiccant is placed inside the dehumidification housing. Mounting blocks are fixed at both ends of the bottom of the dehumidification housing. The mounting blocks are snapped into the corresponding mounting slots at the top end of the base. The mounting slots and mounting blocks are compatible.

[0006] Preferably, a first extension plate is installed at both ends of the top of the base, and a second extension plate is installed at both ends of the bottom of the sealing cover. Screws are installed on the front and back of the top of the second extension plate.

[0007] Preferably, the screw passes through one end of the second extension plate and is internally threaded into a corresponding threaded hole on the first extension plate.

[0008] Preferably, a fixing block is fixedly installed around the bottom of the sealing cover, and the fixing block is snapped into a corresponding fixing groove opened around the top of the base, with the fixing groove and the fixing block being compatible.

[0009] Preferably, the front and back ends of the top of the base are provided with sealing grooves, and the front and back ends of the bottom of the sealing cover are provided with sealing strips.

[0010] Preferably, a sealing strip is snapped into the inside of the sealing groove, and the sealing groove and the sealing strip are compatible.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model, through the coordinated use of components such as a base, sealing cover, heat insulation pad, dehumidifying housing, mounting block, mounting groove, and silica gel desiccant, can effectively maintain the dry and stable internal environment of the three-component sensor. By using the heat insulation pad to block the influence of external temperature fluctuations, it can significantly improve the sensor's moisture-proof and heat-insulating performance, ensuring its measurement accuracy and reliability during long-term operation in complex environments. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the explosion separation structure of this utility model; Figure 3 for Figure 2 A schematic diagram of the structure viewed from below.

[0013] In the diagram: 1. Base; 101. First extension plate; 2. Main sensor; 3. Triaxial accelerometer; 4. Triaxial magnetometer; 5. Connector; 6. Wiring; 7. Sealing cover; 701. Second extension plate; 8. Screw; 801. Threaded hole; 9. Fixing block; 10. Fixing groove; 11. Sealing strip; 12. Sealing groove; 13. Heat insulation pad; 14. Dehumidification housing; 15. Mounting block; 16. Mounting groove; 17. Silica gel desiccant. Detailed Implementation

[0014] 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.

[0015] Please see Figures 1-3 This utility model provides a technical solution: An automatic positioning three-component sensor includes a base 1 and a sealing cover 7. The sealing cover 7 is installed on the top of the base 1 to cover the three-component sensor. A circuit board is installed at the top center of the base 1. A main sensor 2 is installed at the top center of the circuit board. A three-axis accelerometer 3 is installed on the back end of one top end of the circuit board. A three-axis magnetometer 4 is installed on the front end of one top end of the circuit board. A connector 5 is installed at the other top end of the circuit board. A wiring 6 is installed at one end of the connector 5. The wiring 6 has electromagnetic interference resistance.

[0016] A heat insulation pad 13 is bonded to the inside of the sealing cover 7. A through-type interface is provided on one side of the sealing cover 7. The wiring 6 passes through one end of the interface and is threaded onto the connector 5. A groove is provided at one end of the heat insulation pad 13, and the groove corresponds to the interface.

[0017] First, the circuit board integrating the main sensor 2, triaxial accelerometer 3, triaxial magnetometer 4 and connector 5 is installed in the center of the base 1. Then, the heat insulation pad 13, which is glued to the inside of the sealing cover 7, is placed on top of the base 1, and the interface on the side wall of the sealing cover 7 is aligned with the position of the connector 5. Finally, the wiring 6 is threaded through the interface and connected to the connector 5 to complete the sealing of the sensor body and the wiring assembly.

[0018] The model of the main sensor 2 is typically a high-precision three-component seismic detector (such as SM-6, 4.5Hz) or a MEMS accelerometer (such as Silicon Designs 2422).

[0019] Key parameters: Type: Moving-coil velocity sensor or MEMS accelerometer.

[0020] Sensitivity: Typical value for seismic detectors is 0.28 V / (m / s); typical value for MEMS accelerometers is 1–2 V / g.

[0021] Bandwidth: The typical passband of a seismic detector is 4.5Hz–450Hz; MEMS accelerometers can reach DC–several hundred Hz.

[0022] Dynamic range: greater than 120dB.

[0023] The model of the triaxial accelerometer 3 is usually an integrated MEMS chip, such as ADI ADXL355 or Bosch BMI160.

[0024] Key parameters: Measurement range: typically ±2g to ±8g, with ±2g optional for geological applications to obtain high resolution.

[0025] Noise density: Extremely low, typical value <100µg / √Hz (ADXL355 is 25µg / √Hz).

[0026] Output data rate: Configurable, up to several kHz.

[0027] Interface: Standard SPI or I²C digital interface.

[0028] The model of the triaxial magnetometer 4: common models include Honeywell HMC5883L or STMLIS3MDL.

[0029] Key parameters: Measurement range: typically ±8 Gauss.

[0030] Resolution: Up to 5 milligauss.

[0031] Noise density: Typical value <1.5mGauss / √Hz.

[0032] Interface: Standard I²C or SPI digital interface.

[0033] Connector 5 model: Industrial grade multi-core connector 5, such as LemoEGG series, M12 aviation plug or HiroseHR10 series.

[0034] Key parameters: Number of contacts: at least 4–6 pins, for power supply, bidirectional data communication and synchronization signals.

[0035] Protection rating: at least IP67, ensuring dust and water resistance in outdoor environments.

[0036] Material: Metal casing with anti-vibration locking mechanism.

[0037] Cable requirements: Armored shielded cable to enhance tensile strength and electromagnetic interference resistance.

[0038] Two sets of dehumidifying housings 14 are provided on the front and back of the top end of the base 1. Several sets of through holes are opened on both sides of the dehumidifying housing 14. Silica gel desiccant 17 is placed inside the dehumidifying housing 14. Mounting blocks 15 are fixed at both ends of the bottom of the dehumidifying housing 14. The mounting blocks 15 are snapped into the corresponding mounting grooves 16 provided at the top end of the base 1. The mounting grooves 16 and the mounting blocks 15 are compatible.

[0039] This utility model, through the coordinated operation of components such as base 1, sealing cover 7, heat insulation pad 13, dehumidification housing 14, mounting block 15, mounting groove 16, and silica gel desiccant 17, can effectively maintain the dry and stable internal environment of the three-component sensor. With the help of the heat insulation pad 13, it can block the influence of external temperature fluctuations, thereby significantly improving the sensor's moisture-proof and heat insulation performance, ensuring its measurement accuracy and reliability during long-term operation in complex environments.

[0040] Furthermore, the dehumidifier housing 14 with built-in silica gel desiccant 17 is aligned with the pre-set mounting groove 16 on the base 1 via the mounting block 15 at the bottom, and pressed in to secure it, thus completing the assembly of the breathable dehumidifier structure. Conversely, the dehumidifier housing 14 can be removed.

[0041] A first extension plate 101 is installed at both ends of the top of the base 1, and a second extension plate 701 is installed at both ends of the bottom of the sealing cover 7. Screws 8 are installed on the front and back of the top of the second extension plate 701. One end of the screw 8 passes through the second extension plate 701 and is threaded into a corresponding threaded hole 801 on the first extension plate 101. Fixing blocks 9 are fixedly installed around the bottom of the sealing cover 7. The fixing blocks 9 engage with corresponding fixing grooves 10 around the top of the base 1, and the fixing grooves 10 and fixing blocks 9 are compatible. By setting the fixing blocks 9 and fixing grooves 10, the sealing cover 7 is easily positioned and secured on the top of the base 1, thus enabling the sealing cover 7 to perform its positioning function. Sealing grooves 12 are formed at the front and back ends of the top of the base 1, and sealing strips 11 are installed at the front and back ends of the bottom of the sealing cover 7. Sealing strips 11 are engaged inside the sealing grooves 12, and the sealing grooves 12 and sealing strips 11 are compatible.

[0042] First, align the fixing block 9 at the bottom of the sealing cover 7 with the fixing groove 10 on the base 1 and press it in to achieve initial positioning. At the same time, align the sealing strip 11 and insert it into the sealing groove 12 to form a sealing interface. Then, align the second extension plate 701 with the first extension plate 101, and use screws 8 to pass through the second extension plate 701 and screw it into the threaded hole 801 of the first extension plate 101 to tighten it. This simultaneously completes the precise positioning, reliable sealing and mechanical locking of the sealing cover 7.

[0043] In practical use, the triaxial accelerometer 3 senses the direction of gravity to determine the tilt attitude of the main sensor 2, and the triaxial magnetometer 4 obtains the geomagnetic direction as the orientation reference. The fusion algorithm of the main sensor 2 is used to process the data of the two and the three-component physical field signal collected by the main sensor 2 in a synchronous manner, and finally calculates the true direction and magnitude of the measured physical vector in the geographic coordinate system. At the same time, the internal environment is kept stable by means of a sealed structure, heat insulation pad 13 and desiccant, ensuring the accuracy and reliability of long-term measurement in complex environments.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic positioning three-component sensor, comprising a base (1) and a sealing cover (7), characterized in that: The top of the base (1) is fitted with a sealing cover (7) for covering the three-component sensor. A circuit board is installed at the top center of the base (1). A main sensor (2) is installed at the top center of the circuit board. A triaxial accelerometer (3) is installed at the back end of one end of the top of the circuit board. A triaxial magnetometer (4) is installed at the front end of one end of the top of the circuit board. A connector (5) is installed at the other end of the top of the circuit board. A wiring (6) is installed at one end of the connector (5). A heat insulation pad (13) is bonded to the inside of the sealing cover (7). A through-type interface is provided on one side of the sealing cover (7). The wiring (6) is threaded onto one end of the through-type interface and connected to the connector (5). Two sets of dehumidifying housings (14) are provided on the front and back of the top end of the base (1). Several sets of through holes are provided on both sides of the dehumidifying housing (14). Silica gel desiccant (17) is placed inside the dehumidifying housing (14). Mounting blocks (15) are fixed at both ends of the bottom of the dehumidifying housing (14). The mounting blocks (15) are snapped into the corresponding mounting grooves (16) provided at the top end of the base (1). The mounting grooves (16) and the mounting blocks (15) are compatible.

2. The automatic positioning three-component sensor according to claim 1, characterized in that: The base (1) has a first extension plate (101) installed at both ends of the top, and the sealing cover (7) has a second extension plate (701) installed at both ends of the bottom. The front and back of the top of the second extension plate (701) are fitted with screws (8).

3. The automatic positioning three-component sensor according to claim 2, characterized in that: The screw (8) passes through one end of the second extension plate (701) and is internally threaded to the corresponding threaded hole (801) on the first extension plate (101).

4. The automatic positioning three-component sensor according to claim 1, characterized in that: The sealing cover (7) has a fixing block (9) fixedly installed around the bottom. The fixing block (9) is snapped into the corresponding fixing groove (10) opened around the top of the base (1). The fixing groove (10) and the fixing block (9) are compatible.

5. An automatic positioning three-component sensor according to claim 1, characterized in that: The base (1) has a sealing groove (12) on the front and back ends of the top, and the sealing cover (7) has a sealing strip (11) on the front and back ends of the bottom.

6. An auto-positioning three-component sensor according to claim 5, characterized in that: The sealing groove (12) is fitted with a sealing strip (11), and the sealing groove (12) and the sealing strip (11) are compatible.

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