Optically pumped atomic magnetic sensor test fixture

Abstract

The application discloses a kind of optically pumped atomic magnetic sensor test fixtures, it is related to sensor test auxiliary device.The purpose is to overcome the problems that existing test fixture test operation is complicated, test time is long and steering adjustment is difficult to meet test requirements, including sensor adjusting seat;Sensor adjusting seat includes cylinder, steering screw and a pair of positioning bolts;Sensor insertion hole is arranged on the cylinder, and the central axis of the sensor insertion hole has an acute angle with the vertical axis of the cylinder;A pair of positioning bolts are symmetrically arranged on the two side walls of the cylinder, and one end of the pair of positioning bolts is screw-connected with the cylinder;Steering screw is screw-connected with the cylinder, and the axis of the steering screw is perpendicular to the connecting line of the axis of the pair of positioning bolts;By adjusting steering screw, optically pumped atomic magnetic sensor is rotated around the connecting line as the pivot.

Description

Technical Field

[0001] This invention relates to a sensor testing auxiliary device. Background Technology

[0002] Optically pumped atomic magnetic sensors, as a high-sensitivity magnetic sensor that has emerged in China in recent years, have broad application prospects and are increasingly being used in fields such as geophysical exploration, geological exploration, military magnetic detection, and mineral exploration. Optically pumped atomic magnetic sensors measure the total field and are characterized by high sensitivity, a blind zone, and directional bias.

[0003] Unlike traditional magnetoresistive sensors and fluxgate magnetometers, optically pumped atomic magnetic sensors have more specific requirements for measurement fixtures in measurement and applications. Therefore, the characteristics of optically pumped atomic magnetic sensors must be fully considered when designing the measurement fixture. First, considering its high sensitivity, the fixture material must be non-magnetic. Second, it must be able to operate within a certain angle to achieve maximum sensitivity and realize high-sensitivity measurement. Finally, it is necessary to measure its rotational error and working blind zone, requiring the test fixture to be able to rotate the sensor within a certain angle, and the angle must be adjustable.

[0004] Existing test fixtures are cumbersome to operate, take a long time to test, and have difficulty adjusting the direction to meet test requirements. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems of cumbersome testing operations, long testing time, and difficulty in meeting testing requirements by adjusting the direction of existing test fixtures, and to provide a test fixture for an optical pump atomic magnetic sensor.

[0006] This invention provides a test fixture for an optically pumped atomic magnetic sensor, including a sensor adjustment base;

[0007] The sensor adjustment base includes a cylinder, a steering screw, and a pair of positioning bolts;

[0008] The cylinder is provided with a sensor insertion hole, and there is an acute angle between the central axis of the sensor insertion hole and the vertical axis of the cylinder.

[0009] A pair of positioning bolts are symmetrically arranged on both sides of the cylinder, and one end of the pair of positioning bolts is screwed into the cylinder.

[0010] The steering screw is screwed into the cylinder, and the axis of the steering screw is perpendicular to the line connecting the axes of a pair of positioning bolts;

[0011] When the optical pump atomic magnetic sensor is located in the sensor insertion hole, one end of each of the pair of positioning bolts is screwed into the sensor insertion hole and clamps the optical pump atomic magnetic sensor; the steering screw is placed against the bottom of the optical pump atomic magnetic sensor, and the optical pump atomic magnetic sensor is rotated around the connecting line as the axis of rotation by adjusting the steering screw.

[0012] The beneficial effects of this invention are:

[0013] The testing process is simplified, the number of operators is reduced, and the testing efficiency is improved. During the testing process, the orientation of the optical pump atomic magnetic sensor under test can be adjusted by pre-tightening the steering screw after placing the sensor, thus enabling high-sensitivity measurement of the optical pump atomic magnetic sensor, shortening the detection time and improving the testing accuracy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a test fixture for an optically pumped atomic magnetic sensor according to the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of the neutral plate in the optically pumped atomic magnetic sensor test fixture of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of the cylindrical body in a test fixture for an optically pumped atomic magnetic sensor according to the present invention;

[0017] Figure 4 This is a schematic diagram showing the disassembled structure of the upright plate, cylinder, protrusion, positioning bolt, positioning nut and steering screw of the optical pump atomic magnetic sensor test fixture of the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention. Specific Implementation Method 1

[0022] This embodiment of a test fixture for an optically pumped atomic magnetic sensor includes a sensor adjustment base 2;

[0023] The sensor adjustment base 2 includes a cylinder 2-1, a steering screw 2-2, and a pair of positioning bolts 2-4;

[0024] The cylinder 2-1 is provided with a sensor insertion hole 2-3, and the central axis of the sensor insertion hole 2-3 has an acute angle with the vertical axis of the cylinder 2-1;

[0025] A pair of positioning bolts 2-4 are symmetrically arranged on both sides of the cylinder 2-1, and one end of the pair of positioning bolts 2-4 is screwed into the cylinder 2-1;

[0026] The steering screw 2-2 is screwed into the cylinder 2-1, and the axis of the steering screw 2-2 is perpendicular to the line connecting the axes of the pair of positioning bolts 2-4;

[0027] When the optical pump atomic magnetic sensor is located in the sensor insertion hole 2-3, one end of each of the pair of positioning bolts 2-4 is screwed into the sensor insertion hole 2-3 and clamps the optical pump atomic magnetic sensor; the steering screw 2-2 is placed against the bottom of the optical pump atomic magnetic sensor, and the optical pump atomic magnetic sensor is rotated around the connecting line as the axis of rotation by adjusting the steering screw 2-2. Specific Implementation Method Two

[0029] This embodiment is a further description of embodiment one. In this embodiment, a base 1 is also included.

[0030] The sensor adjustment seat 2 is mounted on the base 1, and the height of the sensor adjustment seat 2 on the base 1 can be adjusted.

[0031] The other technical solutions in this embodiment are exactly the same as those in Specific Embodiment 1. Specific Implementation Method 3

[0033] This embodiment is a further description of embodiment two. In this embodiment, the base 1 includes a base plate 1-1 and a pair of upright plates 1-2 symmetrically fixed on the upper surface of the base plate 1-1; and the pair of upright plates 1-2 are symmetrically provided with elongated through grooves 1-3 along the height direction; and the pair of positioning bolts 2-4 are both double-headed bolts.

[0034] The sensor adjustment base 2 also includes a pair of positioning nuts 2-5;

[0035] The cylinder 2-1 is located between a pair of vertical plates 1-2;

[0036] The other ends of a pair of positioning bolts 2-4 pass through the elongated through slots 1-3 on the corresponding upright plates 1-2, and are screwed into a pair of positioning nuts 2-5 to tighten them.

[0037] Specifically, the modular design of the optical pump atomic magnetic sensor test fixture facilitates the repositioning and adjustment of the optical pump atomic magnetic sensor under test. The elongated through groove 1-3 in the center of the upright plate 1-2 is similar to a slide, allowing the positioning bolts 2-4 on both sides to pre-tighten the steering screws 2-2 after the optical pump atomic magnetic sensor under test is placed, thereby adjusting the orientation of the optical pump atomic magnetic sensor under test while adjusting its placement height.

[0038] The other technical solutions in this embodiment are exactly the same as those in specific embodiment two. Specific Implementation Method Four

[0040] This embodiment is a further explanation of embodiment three. In this embodiment, the inner sidewalls of a pair of upright plates 1-2 are provided with strip-shaped limiting grooves 1-4.

[0041] Two strip-shaped limiting grooves 1-4 are symmetrically arranged and parallel to the long strip-shaped through groove 1-3;

[0042] The two side walls of the cylinder 2-1 are symmetrically fixed with protrusions 2-6, which are embedded in the corresponding strip-shaped limiting grooves 1-4.

[0043] Specifically, the protrusion 2-6 installed on the cylinder 2-1 (which can be multiple screws with certain protrusions, all aligned in a straight line and parallel to the strip-shaped limiting groove 1-4, and embedded within the strip-shaped limiting groove 1-4 of the upright plate 1-2 during assembly) can control the cylinder 2-1 to prevent it from changing direction as the position of the optically pumped atomic magnetic sensor under test is adjusted. This structural design allows for multi-dimensional control of the sensor's positioning, providing necessary support for high-precision testing of the optically pumped atomic magnetic sensor.

[0044] The other technical solutions in this embodiment are exactly the same as those in Specific Embodiment Three. Detailed Implementation Method Five

[0046] This embodiment is a further explanation of embodiment two, three or four. In this embodiment, the tilt angle of the optical pump atomic magnetic sensor is 15° to 75°.

[0047] Specifically, the optically pumped atomic magnetic sensor test fixture is mainly used for testing sensitivity-related parameters of optically pumped atomic magnetic sensors. Its operating range is 15°–75°, and it can measure probe orientation differences within ±0.2 nT at room temperature. It can be applied in the field of sensor technology, providing technical support for testing the magnetic sensitivity of high-sensitivity magnetic sensors.

[0048] The other technical solutions in this embodiment are exactly the same as those in specific embodiments two, three or four. Specific Implementation Method Six

[0050] This embodiment is a further explanation of embodiment five. In this embodiment, both the base 1 and the sensor adjustment seat 2 are made of polymethyl methacrylate.

[0051] Specifically, all components of the optically pumped atomic magnetic sensor test fixture are made of polymethyl methacrylate, which has non-magnetic properties and helps to achieve stable measurement of the high sensitivity index of the magnetic sensor.

[0052] The other technical solutions in this embodiment are exactly the same as those in specific embodiment five.

[0053] Example

[0054] like Figure 1 As shown, a test fixture for an optically pumped atomic magnetic sensor includes a base 1 consisting of a base plate 1-1 and a vertical plate 1-2, and a sensor adjustment seat 2 consisting of a cylindrical body 2-1 with a protrusion 2-6, a steering screw 2-2, a positioning bolt 2-4, and a positioning nut 2-5.

[0055] This device uses positioning bolts 2-4 and cylinder 2-1 to pre-tighten the optical pump atomic magnetic sensor under test (positioning bolts 2-4 clamp the side wall of the optical pump atomic magnetic sensor under test, so that the optical pump atomic magnetic sensor under test can tilt and turn about the line connecting the two positioning bolts 2-4 as the axis of rotation). It can control the rotation of the optical pump atomic magnetic sensor under test within a certain angle. The long strip groove 1-3 in the center of the upright plate 1-2 is similar to a slide, which allows the positioning bolts 2-4 on both sides to pre-tighten and turn after the optical pump atomic magnetic sensor under test is placed. Screw 2-2 adjusts the placement height of the optical pump atomic magnetic sensor under test while adjusting the rotation of the optical pump atomic magnetic sensor under test, thereby realizing the test of the optical pump atomic magnetic sensor under test rotating to different tilt states on the test fixture.

[0056] like Figure 2 As shown, the upright plate 1-2 has a trapezoidal structure with a long strip through groove 1-3 in the middle. The inner side is provided with a strip-shaped limiting groove 1-4 that can accommodate the protrusion 2-6 (screw) that is threaded to the cylinder 2-1 with threaded holes 2-7. The bottom surface of the upright plate 1-2 is vertically fixed to the base plate 1-1 with glue.

[0057] like Figure 3 As shown, a sensor insertion hole 2-3 is provided on the front of the cylinder 2-1 at a 45° top angle to place the optical pump atomic magnetic sensor to be tested. Two threaded holes 2-7 are provided on both sides for connecting with the protrusion 2-6, and a threaded through hole 2-8 is provided for connecting with one side of the positioning bolt 2-4. A slope 2-10 is provided on the front of the cylinder 2-1 at a 45° bottom angle, and a threaded hole 2-9 is provided on the slope 2-10 for connecting with the turning screw 2-2.

[0058] like Figure 4As shown, the protrusion 2-6 installed in the threaded hole 2-7 on the side of the cylinder 2-1 is built into the strip-shaped limiting groove 1-4 of the vertical plate 1-2 fixed in the base plate 1-1 during the assembly process. This can control the cylinder 2-1 so that it will not be affected by the change in the rotation of the optical pump atomic magnetic sensor under test after adjusting the sensor insertion hole 2-3 in the cylinder 2-1 and pre-tightening the turning screw 2-2 in the threaded hole 2-9 in the cylinder 2-1. This can accurately control the rotation difference of the magnetic sensor under test.

[0059] Please refer to the following instructions during installation and manufacturing. Figures 1 to 4 All components of the optically pumped atomic magnetic sensor test fixture are made of polymethyl methacrylate, which has non-magnetic properties and helps to achieve stable measurement of the high sensitivity index of the magnetic sensor.

[0060] While the invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that different dependent claims and features herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other embodiments.

Claims

1. A test fixture for an optically pumped atomic magnetic sensor, characterized in that, Including sensor adjustment base (2); The sensor adjustment seat (2) includes a cylinder (2-1), a steering screw (2-2), and a pair of positioning bolts (2-4). The cylinder (2-1) is provided with a sensor insertion hole (2-3), and the central axis of the sensor insertion hole (2-3) and the vertical axis of the cylinder (2-1) have an acute angle. The pair of positioning bolts (2-4) are symmetrically arranged on both sides of the cylinder (2-1), and one end of the pair of positioning bolts (2-4) is screwed into the cylinder (2-1); The steering screw (2-2) is screwed into the cylinder (2-1), and the axis of the steering screw (2-2) is perpendicular to the line connecting the axes of a pair of positioning bolts (2-4); When the optical pump atomic magnetic sensor is located in the sensor insertion hole (2-3), one end of each of the pair of positioning bolts (2-4) is screwed into the sensor insertion hole (2-3) and clamps the optical pump atomic magnetic sensor; the steering screw (2-2) abuts against the bottom of the optical pump atomic magnetic sensor, and by adjusting the steering screw (2-2), the optical pump atomic magnetic sensor rotates around the connecting line as the axis of rotation.

2. The optically pumped atomic magnetic sensor test fixture according to claim 1, characterized in that, It also includes the base (1); The sensor adjustment seat (2) is disposed on the base (1), and the sensor adjustment seat (2) can be adjusted in height on the base (1).

3. The optically pumped atomic magnetic sensor test fixture according to claim 2, characterized in that, The base (1) includes a base plate (1-1) and a pair of upright plates (1-2) symmetrically fixed to the upper surface of the base plate (1-1); and the pair of upright plates (1-2) are symmetrically provided with elongated through grooves (1-3) along the height direction; the pair of positioning bolts (2-4) are both double-headed bolts; The sensor adjustment seat (2) also includes a pair of positioning nuts (2-5); The cylindrical body (2-1) is located between the pair of vertical plates (1-2); The other ends of the pair of positioning bolts (2-4) pass through the elongated through slots (1-3) on the corresponding upright plates (1-2) and are screwed into and tightened by a pair of positioning nuts (2-5).

4. The optically pumped atomic magnetic sensor test fixture according to claim 3, characterized in that, The inner sidewalls of the pair of upright plates (1-2) are each provided with strip-shaped limiting grooves (1-4). Two strip-shaped limiting grooves (1-4) are symmetrically arranged and parallel to the long strip-shaped through groove (1-3); The two side walls of the cylinder (2-1) are symmetrically fixed with protrusions (2-6), and the protrusions (2-6) are embedded in the corresponding strip-shaped limiting grooves (1-4).

5. A test fixture for an optically pumped atomic magnetic sensor according to claim 2, 3, or 4, characterized in that, The tilt angle of the optically pumped atomic magnetic sensor is 15° to 75°.

6. The optically pumped atomic magnetic sensor test fixture according to claim 5, characterized in that, The base (1) and the sensor adjustment seat (2) are both made of polymethyl methacrylate.

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