Calibration device for portable ocean pressure sensor and calibration method thereof

Abstract

The invention provides a portable calibration device for an ocean pressure sensor and a calibration method thereof, and relates to the technical field of ocean pressure sensor calibration, the calibration device comprises a bottom frame, a sensor body and a calibrator are arranged in the middle of the upper end of the bottom frame, and the calibrator is fixedly mounted on the right side of the upper end of the bottom frame; a hoisting assembly is arranged in the middle of the upper end of the bottom frame and comprises a supporting frame, a winding motor is arranged in the middle of the bottom end of the supporting frame, a winding wheel and a steel wire lifting rope are arranged at the output end of the winding motor, a connecting ring is movably connected to the bottom of the steel wire lifting rope, and a movable pulley is arranged in the middle of the upper end of the connecting ring; and moving wheels and supporting legs are arranged at the four corners of the bottom end of the bottom frame correspondingly. According to the portable calibration device for the ocean pressure sensor, convenience is provided for calibration work of the pressure sensor, and the effects of saving time and labor are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of calibration of marine pressure sensors, and specifically to a calibration device and a calibration method for a portable marine pressure sensor. Background Technique

[0002] The seawater pressure value is equivalent to the spatial coordinate of an ocean environmental parameter observation instrument in seawater, and the accuracy of pressure measurement is a key factor for data comparison and detection. Pressure sensors are widely used in the ocean, and can be used in tsunami monitoring, water level gauges, tide gauges, temperature-salinity-depth profilers, and integrated systems of marine monitoring sensors such as buoys, moored buoys, underwater mobile platforms, and seafloor observatory networks. In a complex marine environment, such as under conditions of high temperature, high pressure, strong corrosion, and high salinity, it can work stably for a long time to ensure the reliability of measurement results. It can also quickly respond to changes in ocean pressure and monitor the dynamic process of pressure in real time, which is of great significance for studying marine dynamic phenomena, etc. By measuring the water pressure changes at different depths, the structure and movement law of ocean circulation can be understood, providing basic data for climate research and marine ecosystem research.

[0003] With the development of ocean observation technology, the requirements for the accuracy of pressure sensors are getting higher and higher. After a pressure sensor is used for a period of time, due to the aging of components and measurement circuits, the measurement data will drift and measurement errors will occur. In order to ensure the measurement accuracy, it is necessary to calibrate the pressure sensor.

[0004] For traditional pressure sensor calibration methods, most of them are to transport the pressure sensor to the calibration equipment. After calibration, the pressure sensor is transported back to the work site. The whole calibration process takes a lot of time. Especially for some marine pressure sensors, they are large and heavy, and it is not convenient to transport them back and forth; in addition, during the process of moving and transporting the pressure sensor back and forth, it is easy to cause damage, thus affecting the accuracy of the pressure sensor.

[0005] To solve the above problems, we propose a calibration device and a calibration method for a portable marine pressure sensor to solve the above problems. Summary of the Invention

[0006] To solve the problems in the background technique, the present invention provides a calibration device and a calibration method for a portable marine pressure sensor.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows: A calibration device and a calibration method for a portable marine pressure sensor, including a chassis. In the middle of the upper end of the chassis, there are a sensor body and a calibrator. The calibrator is fixedly installed on the right side of the upper end of the chassis. In the middle of the upper end of the chassis, there is a hoisting assembly, which includes a support frame. In the middle of the bottom end of the support frame, there is a winding motor. The output end of the winding motor is provided with a winding wheel and a steel wire lifting rope. The bottom of the steel wire lifting rope is movably connected with a connecting ring. In the middle of the upper end of the connecting ring, there is a movable pulley. On the top of the sensor body, there is a lifting ring. The connecting ring and the lifting ring are connected by a buckle ring.

[0008] At the four corners of the bottom end of the chassis, there are moving wheels and support feet. The four groups of moving wheels are all movably connected with the chassis. In the middle of the inner side of the chassis, there is a driving assembly, which is used to pull up or push out the moving wheels. Preferably, the driving assembly includes a hydraulic cylinder. The hydraulic cylinder is installed in the middle of the inner side of the chassis. The output end of the hydraulic cylinder is connected with a movable column. In the middle of the movable column, there are four connecting shafts. The ends of the four connecting shafts are respectively movably connected with the four groups of moving wheels.

[0009] Preferably, the hoisting assembly further includes a support column. The support column is fixedly installed on the left side of the upper end of the chassis. At the top of the support column, there is a rotating column movably installed. On the right end of the rotating column, there is a support beam.

[0010] Preferably, at the top of the support column, there is a rotating assembly, including a rotating motor. The rotating motor is fixedly installed on one side of the top end of the support column. The output end of the rotating motor is equipped with a transmission gear. The rotating column is movably installed at the top of the support column, and an external gear ring is installed on the outer wall of the rotating column. The transmission gear and the external gear ring are in transmission connection.

[0011] Preferably, in the middle of the upper end of the chassis, there is a calibration table. On the upper surface of the calibration table, there are multiple fixing bolts. The multiple fixing bolts are vertically installed on the upper surface of the calibration table and are evenly distributed circumferentially.

[0012] Preferably, at the bottom of the sensor body, there is a sensor base. The sensor base is evenly provided with four positioning holes circumferentially. Among them, when the sensor body is installed on the calibration table, at this time, the fixing bolts pass through the positioning holes to limit the sensor body, and the sensor body is fixedly installed by installing fixing nuts on the fixing bolts.

[0013] Preferably, in the middle of the bottom end of the chassis, there is a limit sliding sleeve. The movable column is slidably installed in the middle of the inner side of the limit sliding sleeve.

[0014] Preferably, one end of the steel wire sling is wound around the winding wheel, and the other end bypasses the movable pulley and is fixedly installed on the inner wall of the support frame.

[0015] Preferably, a fixing member is provided at the top of the support frame, and the fixing member is used to install the support frame at the middle part of the bottom end of the support beam.

[0016] A calibration method for a portable marine pressure sensor includes the following steps: S1. Move the calibration device to the vicinity of the sensor body through the moving wheels. S2. Start the driving component to pull the moving wheels so that the four groups of moving wheels are in the retracted state, and the four groups of support feet stably support and place the chassis. S3. Rotate through the rotating component to rotate and adjust the position of the hoisting component until the connecting ring moves to the upper end position of the sensor body, and then manually connect the connecting ring and the lifting ring with a buckle. S4. Start the winding motor to wind the steel wire sling. Under the sliding of the movable pulley, quickly lift the sensor body, and then rotate through the rotating component to rotate the sensor body to the upper end position of the calibration table, and then loosen the steel wire sling to place the sensor body on the surface of the calibration table. S5. Manually install a fixing nut on the fixing bolt 21 to limit and lock the sensor body. S6. Manually start the calibrator to calibrate the sensor body.

[0017] Compared with the prior art, the beneficial effects of the present invention are: The present invention provides a calibration device for a portable marine pressure sensor, which provides convenience for the calibration work of the pressure sensor and saves time and effort. Among them, by setting multiple groups of moving wheels, the calibration device can be transported to the work site for calibration operations, without the need to reciprocally transport and move the pressure sensor, thereby improving the convenience and efficiency of the calibration work of the pressure sensor. And during use, the driving component can retract the moving wheels so that the support feet support the chassis, thereby improving the stability of the chassis when stationary. Conversely, the moving wheels can also be quickly deployed to provide convenience for the movement and transportation of the calibration device. At the same time, by setting a hoisting component and a rotating component, the sensor body can be quickly hoisted onto the calibration table for stable placement, saving time and effort, thereby effectively improving the convenience and efficiency of the calibration work of the pressure sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2For the present invention Figure 1 The enlarged view of position A in the present invention; Figure 3 The structural schematic diagram of the rotating assembly in the present invention; Figure 4 The top view structural schematic diagram of the sensor base of the present invention; Figure 5 The structural schematic diagram of the driving assembly in the present invention.

[0019] In the figure: 1, chassis; 2, calibration table; 21, fixing bolt; 3, sensor body; 31, lifting ring; 32, sensor base; 321, positioning hole; 4, calibrator; 5, support feet; 6, moving wheels; 61, hydraulic cylinder; 62, movable column; 63, connecting shaft; 64, limiting sliding sleeve; 7, support column; 71, rotating column; 72, support beam; 73, rotating motor; 74, transmission gear; 75, external gear ring; 8, support frame; 81, fixing member; 82, winding motor; 83, winding wheel; 84, wire sling; 85, movable pulley; 86, connecting ring; 87, snap ring. Specific embodiments

[0020] The embodiment of the present application provides a calibration device for a portable marine pressure sensor. Its main technical solution is that by setting multiple groups of moving wheels 6, the calibration device can be moved and carried to the work site, without the need to reciprocally move the pressure sensor. Moreover, during use, the moving wheels 6 can be retracted by the driving assembly, so that the support feet 5 support the chassis 1, thereby improving the stability of the chassis 1 when it is stationary; conversely, the moving wheels 6 can also be quickly deployed to provide convenience for the movement and handling of the calibration device; at the same time, by setting a hoisting assembly and a rotating assembly, the sensor body 3 can be quickly hoisted onto the calibration table 2 for locking and installation. Through the above structure, the present invention saves time and effort for the calibration work of the pressure sensor, thereby effectively improving the convenience and efficiency of the calibration work for the pressure sensor.

[0021] Embodiment 1: Refer to Figure 1 - Figure 5 As shown, a calibration device for a portable marine pressure sensor in this embodiment includes a chassis 1. A sensor body 3 and a calibrator 4 are arranged in the middle of the upper end of the chassis 1. The calibrator 4 is fixedly installed on the upper right side of the chassis 1, and the calibrator 4 is used to calibrate the sensor body 3.

[0022] In the middle of the upper end of the chassis 1, a hoisting assembly is provided. The hoisting assembly includes a support frame 8. In the middle of the bottom end of the support frame 8, a winding motor 82 is provided. At the output end of the winding motor 82, a winding wheel 83 and a steel wire sling 84 are provided. The bottom of the steel wire sling 84 is movably connected to a connecting ring 86. In the middle of the upper end of the connecting ring 86, a movable pulley 85 is provided. At the top of the sensor body 3, a lifting ring 31 is provided. The connecting ring 86 and the lifting ring 31 are connected by a buckle 87.

[0023] Among them, by driving the winding wheel 83 to rotate through the winding motor 82, the steel wire sling 84 can be wound, so that the movable pulley 85 rotates. Under the action of force, the sensor body 3 is lifted. The setting of the movable pulley 85 can save the pulling force on the sensor body 3, play a role in saving effort, and provide convenience for the hoisting of the sensor body 3.

[0024] The hoisting assembly further includes a support column 7. The support column 7 is fixedly installed on the left side of the upper end of the chassis 1. At the top of the support column 7, a rotating column 71 is movably installed. At the right end of the rotating column 71, a support beam 72 is provided; At the top of the support column 7, a rotating assembly is provided, including a rotating motor 73. The rotating motor 73 is fixedly installed on one side of the top end of the support column 7. At the output end of the rotating motor 73, a transmission gear 74 is installed. The rotating column 71 is movably installed at the top of the support column 7, and an external gear ring 75 is installed on the outer wall of the rotating column 71. The transmission gear 74 and the external gear ring 75 are in transmission connection.

[0025] Among them, by driving the transmission gear 74 to rotate through the rotating motor 73, the external gear ring 75 is driven to rotate, so that the rotating column 71 rotates, thereby realizing the rotation adjustment of the position of the hoisting assembly, so that the hoisting assembly can be quickly moved above the sensor body 3 for hoisting.

[0026] In some examples, one end of the steel wire sling 84 is wound around the winding wheel 83, and the other end bypasses the movable pulley 85 and is fixedly installed on the inner wall of the support frame 8.

[0027] In some examples, at the top of the support frame 8, a fixing member 81 is provided. The fixing member 81 is used to install the support frame 8 at the middle of the bottom end of the support beam 72.

[0028] Example 2: Refer to Figure 1 - Figure 5 As shown, on the basis of Example 1, a calibration device for a portable marine pressure sensor and its calibration method further include the following structure: At the four corners of the bottom end of the chassis 1, moving wheels 6 and support feet 5 are provided. The four groups of moving wheels 6 are all movably connected to the chassis 1. In the middle of the inner side of the chassis 1, a driving assembly is provided. The driving assembly is used to pull in or push out the moving wheels 6.

[0029] The driving assembly includes a hydraulic cylinder 61 which is installed in the middle of the inner side of the chassis 1. The output end of the hydraulic cylinder 61 is connected with a movable column 62. Four groups of connecting shafts 63 are movably connected to the middle of the movable column 62. The ends of the four groups of connecting shafts 63 are respectively movably connected with four groups of moving wheels 6.

[0030] Among them, the arrangement of the moving wheels 6 provides convenience for the moving and handling of the calibration device of the present invention. During the use process, first, it is necessary to start the hydraulic cylinder 61. The hydraulic cylinder 61 drives the movable column 62 to slide upward, so as to generate a pulling force on the surrounding connecting shafts 63. Under the pulling of the connecting shafts 63, the moving wheels 6 can rotate, changing from vertical to inclined, so as to retract the moving wheels 6. At this time, the four groups of supporting feet 5 can contact the ground, so as to realize the stable support and placement of the chassis 1. On the contrary, by pushing the hydraulic cylinder 61, the movable column 62 slides downward, so as to push the surrounding connecting shafts 63, so as to push the moving wheels 6 from the inclined state to the vertical unfolded state. When the moving wheels 6 are perpendicular to the chassis 1, at this time, the four groups of moving wheels 6 contact the ground, so as to lift the four groups of supporting feet 5 off the ground. Due to the loss of the support of the supporting feet 5, it is convenient for the moving wheels 6 to drive the chassis 1 to move, providing convenience for the moving and handling of the device of the present invention.

[0031] Example 3: Refer to Figure 1 - Figure 5 As shown, on the basis of Examples 1-2, a calibration device for a portable marine pressure sensor and its calibration method further include the following structures: A calibration table 2 is arranged in the middle of the upper end of the chassis 1. A plurality of fixing bolts 21 are arranged on the upper surface of the calibration table 2. The plurality of fixing bolts 21 are vertically installed on the upper surface of the calibration table 2 and are circumferentially and evenly distributed; a sensor base 32 is arranged at the bottom of the sensor body 3. Four positioning holes 321 are circumferentially and evenly formed in the sensor base 32. Among them, when the sensor body 3 is installed on the calibration table 2, at this time, the fixing bolts 21 pass through the positioning holes 321 to limit the sensor body 3, and a fixing nut is installed on the fixing bolts 21 to fixedly install the sensor body 3. The fixing bolts 21 play a role in limiting the placement of the sensor body 3, and then by installing the fixing nut, the sensor body 3 can be fixedly installed, thereby effectively improving the stability when calibrating the sensor body 3.

[0032] In some examples, a limiting sliding sleeve 64 is provided in the middle of the bottom end of the chassis 1. The movable column 62 is slidably installed in the middle of the inner side of the limiting sliding sleeve 64. The limiting sliding sleeve 64 can limit the lifting trajectory of the movable column 62, so that the movable column 62 can only perform vertical lifting and lowering movements. When the movable column 62 rises, the moving wheel 6 can be pulled through the connecting shaft 63, so that the moving wheel 6 becomes in an inclined retracted state. When the movable column 62 descends, it is pushed through the connecting shaft 63, so that the moving wheel 6 can be unfolded until it stands vertically, thus providing convenience for the movement and handling of the calibration device of the present invention.

[0033] A calibration method for a portable marine pressure sensor includes the following steps: S1. Move the calibration device to the vicinity of the sensor body 3 through the moving wheel 6; S2. Start the driving component to pull the moving wheel 6, so that the four groups of moving wheels 6 are in a retracted state, and the four groups of support feet 5 stably support and place the chassis 1; S3. Rotate through the rotating component to rotate and adjust the position of the hoisting component until the connecting ring 86 moves to the upper end position of the sensor body 3, and then manually connect the connecting ring 86 and the lifting ring 31 with the buckle 87; S4. Start the winding motor 82 to wind the steel wire suspension rope 84. Under the sliding of the movable pulley 85, the sensor body 3 is quickly lifted, and then rotate through the rotating component to rotate the sensor body 3 to the upper end position of the calibration table 2, and then loosen the steel wire suspension rope 84 to place the sensor body 3 on the surface of the calibration table 2; S5. Manually install a fixing nut on the fixing bolt 21 to limit and lock the sensor body 3; S6. Manually start the calibrator 4 to calibrate the sensor body 3.

[0034] The working principle of the present invention is: When the sensor body 3 needs to be calibrated, first push the device of the present invention. Under the rolling of the moving wheel 6, move the calibration device to the sensor body 3. Then start the hydraulic cylinder 61 of the driving component of the moving wheel 6. Through the retraction of the hydraulic cylinder 61, the movable column 62 is pulled upward, so that the surrounding connecting shafts 63 are pulled, thereby realizing the pulling of the moving wheel 6, making the moving wheel 6 rotate and thus in a retracted state. At this time, since the support of the moving wheel 6 is lost, the support feet 5 will contact the ground, providing stable support for the chassis 1, thus effectively improving the stability of the static placement of the chassis 1.

[0035] Then start the rotating motor 73. By rotating the rotating motor 73, the driving gear 74 can be driven to rotate, thereby driving the outer gear ring 75 to drive the rotating column 71 to rotate, so that the hoisting assembly is rotated and moved to the upper position above the sensor body 3; Then the staff pulls the connecting ring 86, so that the connecting ring 86 approaches the lifting ring 31 at the top of the sensor body 3, and the connecting ring 86 and the lifting ring 31 are sleeved through the buckle 87.

[0036] At this time, the staff can start the winding motor 82. By driving the winding wheel 83 to rotate through the winding motor 82, the steel wire sling 84 can be wound. When the steel wire sling 84 is pulled, the movable pulley 85 at the top of the connecting ring 86 will rotate. Under the action of force, the sensor body 3 can be easily lifted. At this time, the rotating motor 73 drives the rotating column 71 to reset, so that the sensor body 3 is moved to the middle position at the upper end of the chassis 1. Then loosen the winding motor 82, and the sensor body 3 can be placed on the calibration table 2; During the process of lowering and placing, the position of the sensor body 3 needs to be adjusted so that the fixing bolt 21 passes through the positioning hole 321, and then by installing a fixing nut on the fixing bolt 21, the sensor body 3 can be fixedly installed, thereby improving the stability of the sensor body 3 placed on the chassis 1.

[0037] After the sensor body 3 is fixed, the staff can operate the calibrator 4 to calibrate the sensor body 3 at this time.

[0038] With the above structure, the calibration device can be quickly moved and carried. At the same time, during the calibration process of the sensor body 3, the sensor body 3 can be easily lifted and installed through the hoisting assembly and the rotating assembly, which saves time and effort.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable marine pressure sensor calibration device, characterized in that: It comprises a base frame (1), wherein a sensor body (3) and a calibrator (4) are arranged at the middle of the upper end of the base frame (1), and the calibrator (4) is fixedly mounted on the right side of the upper end of the base frame (1); A lifting assembly is provided at the middle of the upper end of the base frame (1), and the lifting assembly comprises a support frame (8), a winding motor (82) is provided at the middle of the bottom end of the support frame (8), a winding wheel (83) and a steel wire rope (84) are provided at the output end of the winding motor (82), a connecting ring (86) is movably connected to the bottom of the steel wire rope (84), a movable pulley (85) is provided at the middle of the upper end of the connecting ring (86), a lifting ring (31) is provided at the top of the sensor body (3), and the connecting ring (86) and the lifting ring (31) are connected via a buckle (87); The bottom four corners of the base frame (1) are provided with moving wheels (6) and supporting feet (5), the four groups of moving wheels (6) are movably connected to the base frame (1), and a driving component is provided in the inner middle part of the base frame (1), and the driving component is used to pull the moving wheels (6) to be retracted or push them to be unfolded; The driving assembly comprises a hydraulic cylinder (61), the hydraulic cylinder (61) being mounted in the middle of the inner side of the base frame (1), the output end of the hydraulic cylinder (61) being connected to a movable column (62), the middle of the movable column (62) being movably connected to four groups of connecting shafts (63), the ends of the four groups of connecting shafts (63) being movably connected to four groups of moving wheels (6) respectively.

2. A portable ocean pressure sensor calibration device according to claim 1, characterized in that: The hoisting assembly further comprises a support column (7), wherein the support column (7) is fixedly mounted on the left side of the upper end of the base frame (1), a rotating column (71) is movably mounted on the top of the support column (7), and a support beam (72) is provided at the right end of the rotating column (71).

3. A portable ocean pressure sensor calibration device according to claim 2, characterized in that: A rotating assembly is provided at the top of the support column (7), comprising a rotating motor (73). The rotating motor (73) is fixedly mounted on one side of the top end of the support column (7). A transmission gear (74) is mounted on the output end of the rotating motor (73). The rotating column (71) is movably mounted on the top of the support column (7), and an outer gear ring (75) is mounted on the outer wall of the rotating column (71). The transmission gear (74) and the outer gear ring (75) are in transmission connection with each other.

4. A portable ocean pressure sensor calibration device according to claim 3, characterized in that: A calibration platform (2) is provided at the middle of the upper end of the base frame (1), and a plurality of groups of fixing bolts (21) are provided on the upper end surface of the calibration platform (2). The plurality of groups of fixing bolts (21) are vertically mounted on the upper end surface of the calibration platform (2) and are evenly distributed in the circumferential direction.

5. A portable ocean pressure sensor calibration device according to claim 4, characterized in that: A sensor base (32) is provided at the bottom of the sensor body (3), and the sensor base (32) is provided with four groups of positioning holes (321) evenly distributed in the circumferential direction; When the sensor body (3) is mounted on the calibration platform (2), the fixing bolt (21) passes through the positioning hole (321) to limit the position of the sensor body (3), and the fixing nut is installed on the fixing bolt (21) to fix the sensor body (3).

6. A portable ocean pressure sensor calibration device according to claim 5, characterized in that: A limiting sliding sleeve (64) is provided in the middle of the bottom end of the base frame (1), and the movable column (62) is slidably mounted in the middle of the inner side of the limiting sliding sleeve (64).

7. A portable ocean pressure sensor calibration device according to claim 6, characterized in that: One end of the steel wire rope (84) is wound around the winding wheel (83), and the other end is passed around the movable pulley (85) and fixedly mounted on the inner wall of the support frame (8).

8. A portable ocean pressure sensor calibration device according to claim 7, characterized in that: A fixing member (81) is provided on the top of the support frame (8), and the fixing member (81) is used to install the support frame (8) at the middle of the bottom end of the support beam (72).

9. A method for calibrating a portable ocean pressure sensor, characterized in that: A portable ocean pressure sensor calibration device as claimed in any one of claims 1 to 8, comprising the following steps: S1, moving the calibration device to the vicinity of the sensor body (3) by means of a moving wheel (6); S2, starting the driving assembly to pull the moving wheels (6), so that the four sets of moving wheels (6) are in a retracted state, so that the four sets of supporting legs (5) stably support and place the base frame (1); S3, rotating the rotating assembly to adjust the position of the hanging assembly until the connecting ring (86) moves to the upper end of the sensor body (3), and then manually connecting the connecting ring (86) and the hanging ring (31) using a buckle ring (87); S4, starting the winding motor (82) to wind up the wire rope (84), and under the sliding of the movable pulley (85), the sensor body (3) is quickly lifted, and then the rotating assembly is used to rotate the sensor body (3) to the upper end position of the calibration table (2), and then the wire rope (84) is loosened, so that the sensor body (3) is placed on the surface of the calibration table (2); S5, manually installing a fixing nut on the fixing bolt 21 to limit and lock the sensor body (3); S6. Manually start the calibrator (4) to calibrate the sensor body (3).

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