A measuring fixture for field intensity probes

Abstract

This invention discloses a measuring and fixing fixture for an electric field probe, relating to the field of electromagnetic measurement auxiliary equipment technology. It includes: a vertical support for placement on an experimental platform, having a vertical rod; a fixture body slidably mounted on the vertical rod and locked in its relative position to the vertical rod by a first locking member; an angle fixing block slidably mounted on the fixture body in a direction close to or away from the vertical rod and locked in its relative position on the fixture body by a second locking member; the angle fixing block has an inclined mounting surface, on which a stepper motor is fixed, and a rotating fixing seat for mounting the electric field probe is mounted on the output shaft of the stepper motor; the vertical support, fixture body, angle fixing block, first locking member, second locking member, and rotating fixing seat are all made of non-conductive material. This invention improves the accuracy and reliability of electric field measurement data and increases efficiency.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic measurement auxiliary equipment technology, and in particular to a measuring fixture for a field strength probe. Background Technology

[0002] During the omnidirectional testing of the high-frequency field strength probe, it is necessary to ensure that the center position of the field strength probe and the standard gain antenna are at the same height, and the probe must be in a uniform high-frequency electric field radiation area.

[0003] Existing technologies typically use fixed supports and rely on manual adjustment of the probe angle, which results in problems such as uneven angles, positioning deviations, and low efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a measuring fixture for a field strength probe, so as to solve the problems existing in the prior art, improve the accuracy and reliability of field strength measurement data, and improve efficiency.

[0005] To achieve the above objectives, the present invention provides the following solution: This invention provides a measuring and fixing fixture for a field strength probe, comprising: a vertical support for placing on an experimental table, having a vertical rod; a fixture body slidably mounted on the vertical rod in a vertical direction, and capable of being locked in relative position with the vertical rod by a first locking member; an angle fixing block slidably mounted on the fixture body in a direction close to or away from the vertical rod, and capable of being locked in relative position with the fixture body by a second locking member; the angle fixing block has an inclined mounting surface, on which a stepper motor is fixed, and a rotating fixing seat for mounting the field strength probe is provided on the output shaft of the stepper motor; the vertical support, the fixture body, the angle fixing block, the first locking member, the second locking member, and the rotating fixing seat are all made of non-conductive material.

[0006] Preferably, a motor mounting groove is provided on the inclined mounting surface, and the stepper motor is fixed in the motor mounting groove.

[0007] Preferably, the clamp body is further provided with a frequency response mounting bracket.

[0008] Preferably, the clamp body has a U-shaped groove that runs vertically through the clamp body, with the opening of the U-shaped groove located at one end of the clamp body; a semi-circular groove is provided on each of the two opposite side walls of the U-shaped groove, and the vertical rod is passed through between the two semi-circular grooves; a first locking hole and a second locking hole are provided on the two opposite side walls at the opening of the U-shaped groove; the first locking member is a first locking bolt, and the threaded section of the first locking bolt passes through the first locking hole and is threaded into the second locking hole.

[0009] Preferably, the U-shaped groove has a mounting section located on the side of the semicircular groove away from the opening of the U-shaped groove; the frequency response mounting bracket is fixed to the mounting section by a third locking member.

[0010] Preferably, the clamp body has an avoidance arc groove on the side wall corresponding to the mounting section.

[0011] Preferably, the clamp body has two parallel elongated slots that extend vertically through each other; the bottom of the angle fixing block has at least two connecting fixing holes corresponding to the positions of each elongated slot; the second locking member consists of multiple second locking bolts, each of which corresponds to a connecting fixing hole; the threaded end of the second locking bolt passes through the elongated slot and is threaded into the corresponding connecting fixing hole.

[0012] Preferably, the vertical support includes a circular base and a vertical rod; the circular base is fixed to the lower end of the vertical rod.

[0013] Preferably, the vertical support, the clamp body, the angle fixing block, the first locking member, the second locking member, and the rotating fixing seat are made of polytetrafluoroethylene.

[0014] Preferably, the stepper motor is bonded and fixed in the motor mounting slot.

[0015] The present invention achieves the following technical effects compared to the prior art: The field strength probe measurement and fixing fixture provided by this invention provides a vertical mounting base for the fixture body via a vertical support rod, allowing the fixture body to slide along the vertical direction of the vertical rod and be locked in relative position by a first locking member. This enables precise adjustment of the height position of the field strength probe, ensuring that the center position of the field strength probe and the standard gain antenna remain aligned. An angle fixing block can slide on the fixture body along the direction approaching or away from the vertical rod and be locked in relative position by a second locking member, allowing flexible adjustment of the horizontal distance between the field strength probe and the standard gain antenna, ensuring that the probe is within a uniform high-frequency electric field radiation area. Simultaneously, the tilt of the angle fixing block... A stepper motor fixed on the inclined mounting surface can drive the rotating mounting base to automatically rotate the field strength probe, replacing manual angle adjustment and avoiding uneven angles and positioning deviations, thus effectively improving testing efficiency. Furthermore, the vertical bracket, fixture body, angle fixing block, first locking element, second locking element, and rotating mounting base are all made of non-conductive materials, which will not interfere with the electric field distribution, further ensuring the stability and accuracy of the omnidirectional testing of the field strength probe. This comprehensively solves the technical problems of uneven angles, positioning deviations, and low efficiency caused by manual adjustment of existing fixed brackets, and achieves precise and stable adjustment of the installation position and angle of the field strength probe. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of the field strength probe measurement and fixing fixture provided by the present invention; Figure 2 A schematic diagram of the overall use of the field strength probe measurement and fixing fixture provided by the present invention; Figure 3 A schematic diagram of the measuring fixture for the field strength probe provided by the present invention, excluding the vertical support; Figure 4 A schematic diagram of the fixture body in the field strength probe measurement fixture provided by the present invention; Figure 5 A schematic diagram of the angle fixing block in the measuring and fixing fixture of the field strength probe provided by the present invention; Figure 6 A schematic diagram of the structure of the field strength probe measurement and fixing fixture provided by the present invention, showing the field strength probe mounted on a stepper motor. Figure 7 This is a schematic diagram of the structure of the field strength probe being mounted on the frequency response mounting bracket in the field strength probe measurement and fixing fixture provided by the present invention.

[0018] In the picture: 1-Gain antenna; 2-Field strength probe; 3-Vertical support; 31-Circular base; 32-Vertical rod; 4-Clamp body; 41-U-shaped groove; 42-Semi-circular groove; 43-First locking hole; 44-Second locking hole; 45-Avoidance arc groove; 46-Elongated slot hole; 47-Frequency response mounting bracket; 5-Angle fixing block; 51-Motor mounting slot; 6 - Stepper motor; 61 - Rotary mounting base. Detailed Implementation

[0019] 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.

[0020] The purpose of this invention is to provide a measuring fixture for a field strength probe, so as to solve the problems existing in the prior art, improve the accuracy and reliability of field strength measurement data, and improve efficiency.

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1 This embodiment provides a measuring and fixing fixture for a field strength probe, used for fixing and adjusting the angle of a multi-angle field strength probe 2 in an anechoic environment, such as... Figures 1-7 As shown ( Figure 2 (A simplified schematic diagram showing the positions of the device and gain antenna 1) includes: A vertical support 3, which is used to place on the experimental table, has a vertical rod 32; The clamp body 4 is slidably mounted on the vertical rod 32 in the vertical direction, and its relative position with the vertical rod 32 can be locked by the first locking member; An angle fixing block 5 is slidably mounted on the clamp body 4 in the direction of approaching or away from the vertical rod 32, and its relative position on the clamp body 4 can be locked by the second locking member; the angle fixing block 5 has an inclined mounting surface, on which a stepper motor 6 is fixed, and a rotating fixing seat 61 for mounting the field strength probe 2 is provided on the output shaft of the stepper motor 6. The vertical support 3, the clamp body 4, the angle fixing block 5, the first locking element, the second locking element, and the rotating fixing seat 61 are all made of non-conductive material.

[0023] The vertical support 3 provides a vertical mounting base for the clamp body 4 via the vertical rod 32, allowing the clamp body 4 to slide vertically along the vertical rod 32 and be locked in position by the first locking element. This enables precise adjustment of the height of the field strength probe 2, ensuring that the center position of the field strength probe 2 and the standard gain antenna 1 remain aligned. The angle fixing block 5 can slide on the clamp body 4 along the direction close to or away from the vertical rod 32 and be locked in position by the second locking element. This allows flexible adjustment of the horizontal distance between the field strength probe 2 and the standard gain antenna 1, ensuring that the probe is within a uniform high-frequency electric field radiation area. Simultaneously, the angle fixing block 5 is fixed on its inclined mounting surface. A fixed stepper motor 6 drives the rotating mounting base 61 to automatically rotate the field strength probe 2, replacing manual angle adjustment and avoiding uneven angles and positioning deviations, thus effectively improving testing efficiency. Furthermore, the vertical support 3, clamp body 4, angle fixing block 5, first locking element, second locking element, and rotating mounting base 61 are all made of non-conductive materials, which will not interfere with the electric field distribution, further ensuring the stability and accuracy of the omnidirectional testing of the field strength probe 2. This comprehensively solves the technical problems of uneven angles, positioning deviations, and low efficiency caused by the reliance on manual adjustment of existing fixed supports, and achieves precise and stable adjustment of the installation position and angle of the field strength probe 2.

[0024] Specifically, the field strength probe 2 measurement fixture provided in this embodiment integrates position adjustment and multi-angle adjustment. It can precisely adjust the horizontal position, front-back position, and elevation angle (determined by the tilt angle of the inclined bottom surface of the motor mounting slot 51 of the angle fixing block 5, for example, 35.3°, which is the reference tilt angle of the bracket) of the field strength probe 2 according to the installation position of the standard gain antenna 1 in the dark room, as well as the horizontal rotation angle (rotation of the fixture body 4 around the axis of the vertical rod 32). Through position and angle adjustment, the clamped field strength probe 2 is always in the uniform high-frequency standard electric field radiation area of ​​the standard gain antenna 1, avoiding the problem of uneven electric field reception caused by position offset or angle deviation of the field strength probe 2, and effectively improving the accuracy and reliability of field strength measurement data.

[0025] Detailed instructions for use: Step 1: Install the field strength probe 2 on the rotating fixing seat 61 of the angle fixing block 5, and then fix the angle fixing block 5 to the fixture body 4 of the field strength probe 2 by non-conductive screws.

[0026] Step 2: Connect the lower end of the vertical rod 32 to the circular base 31 and fix it to the ground. Insert the clamp body 4, with the field strength probe 2 fixed in place, through the clamping holes formed by the two semi-circular grooves 42 from the upper end of the vertical rod, and fix the clamp body 4 to the vertical rod 32 by hand-tightening screws.

[0027] Step 3: By adjusting the position and angle, ensure that the standard gain antenna 1 and the field strength probe 2 are at the same height, and that the field strength probe 2 is aligned with the central axis of the aperture of the standard gain antenna 1. At the same time, adjust the horizontal distance between the two to ensure that the field strength probe 2 can receive a uniform high-frequency electric field.

[0028] Among them, regarding vertical support 3 (such as Figure 1 , Figure 6 and Figure 7 The relevant settings instructions are as shown below: In the optional solutions of this embodiment, the vertical support 3 preferably includes a circular base 31 and a vertical rod 32; the circular base 31 is fixed to the lower end of the vertical rod 32.

[0029] Specifically, the vertical rod 32 is mainly used to fix the height of the fixture body 4, and the circular base 31 is mainly used to support the vertical rod 32 in an upright state.

[0030] Among them, regarding the fixture body 4 (such as Figure 1 , Figure 3 and Figure 4 The relevant settings instructions are as shown below: In the optional solutions of this embodiment, a more preferred embodiment is that the clamp body 4 is provided with a U-shaped groove 41 that runs vertically through the clamp body 4, and the opening of the U-shaped groove 41 is located at one end of the clamp body 4; a semi-circular groove 42 is provided on each of the two opposite side walls of the U-shaped groove 41, and the vertical rod 32 is passed through between the two semi-circular grooves 42; a first locking hole 43 and a second locking hole 44 are provided on the two opposite side walls at the opening of the U-shaped groove 41; the first locking member is a first locking bolt, and the threaded section of the first locking bolt passes through the first locking hole 43 and is threaded into the second locking hole 44.

[0031] In the optional embodiments of this example, a more preferred option is that the fixture body 4 is further fixedly provided with a frequency response mounting bracket 47. The frequency response mounting bracket 47 is used to mount the field strength probe 2 for use in frequency response experiments.

[0032] In the optional embodiments of this example, a preferred embodiment is that the U-shaped groove 41 has a mounting section located on the side of the semicircular groove 42 away from the opening of the U-shaped groove 41; the frequency response mounting bracket 47 is fixed to the mounting section by a third locking member. The frequency response mounting bracket 47 has an inclined mounting surface for fixing the field strength probe 2, which is used to ensure that the field strength probe 2 is at the required tilt angle after being mounted on the frequency response mounting bracket 47.

[0033] In the optional solutions of this embodiment, a more preferred embodiment is that the clamp body 4 has an abutment arc-shaped groove 45 on the side wall corresponding to the mounting section. This groove is used to avoid obstruction of the hard optical fiber on the field strength probe 2 when it is installed on the frequency response mounting bracket 47, thus protecting the optical fiber from breakage during the angle adjustment process of the field strength probe 2.

[0034] In the optional solutions of this embodiment, it is more preferred that the clamp body 4 has two parallel elongated slots 46 that extend through the top and bottom; the bottom of the angle fixing block 5 has at least two connecting fixing holes corresponding to the positions of each elongated slot 46; the second locking member is a plurality of second locking bolts, each of which corresponds to a connecting fixing hole; the threaded end of the second locking bolt passes through the elongated slot 46 and is threaded into the corresponding connecting fixing hole.

[0035] Specifically, the two elongated slots 46 are used in conjunction with the angle fixing block 5 to adjust the horizontal distance and angle between the field strength probe 2 and the gain antenna 1.

[0036] Among them, regarding the angle fixing block 5 (such as Figure 1 , Figure 3 , Figures 5-7 The relevant settings instructions are as shown below: Specifically, the angle fixing block 5 adopts a right-angled triangle structure; serving as the core load-bearing component and angle reference.

[0037] In the optional solutions of this embodiment, a motor mounting groove 51 is provided on the inclined mounting surface, and the stepper motor 6 is fixed in the motor mounting groove 51.

[0038] In the optional solutions of this embodiment, it is more preferred that the stepper motor 6 is bonded and fixed in the motor mounting slot 51.

[0039] Specifically, the rotating mounting base 61 on the output shaft of the stepper motor 6 can drive the field strength probe 2 to rotate one revolution around the output shaft.

[0040] Regarding other related settings: In the optional solutions of this embodiment, it is more preferred that the vertical support 3, the fixture body 4, the angle fixing block 5, the first locking member, the second locking member, and the rotating fixing seat 61 are made of polytetrafluoroethylene (PTFE). Utilizing its low dielectric constant and high insulation properties, PTFE completely eliminates electromagnetic interference, ensuring a pure test magnetic field, eradicating electromagnetic interference, and guaranteeing the accuracy of field strength test data; it also improves environmental durability, extends the service life of the fixture, and meets the requirements for long-term high-precision testing.

[0041] Specifically, height adjustment: Loosen the first locking bolt of the clamp body 4, slide the clamp body 4 along the vertical rod 32 to the target height, align it with the scale on the vertical rod 32, and tighten the first locking bolt to complete the height fixation.

[0042] Angle adjustment: Loosen the first locking bolt of the clamp body 4, rotate the clamp body 4 circumferentially around the vertical rod 32 as the axis, so that the clamp body 4 is rotated horizontally to the target position, and tighten the first locking bolt after confirmation; and adjust the horizontal distance of the angle fixing block 5 on the clamp body 4 from the axis of the vertical rod 32, thereby completing the angle locking.

[0043] Specifically, the frequency response mounting bracket 47 is used for frequency response testing; the angle fixing block 5, the stepper motor 6, and the rotating fixing seat 61 are used for omnidirectional testing; the whole unit realizes multi-functional integration, improving testing efficiency and adaptability.

[0044] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A measuring and fixing fixture for a field strength probe, characterized in that: include: A vertical support, used for placing on an experimental table, has a vertical rod; The clamp body is slidably mounted on the vertical rod in the vertical direction, and its relative position to the vertical rod can be locked by the first locking member; An angle fixing block is slidably disposed on the clamp body along the direction close to or away from the vertical rod, and its relative position on the clamp body can be locked by a second locking member; the angle fixing block has an inclined mounting surface, on which a stepper motor is fixed, and a rotating fixing seat for mounting a field strength probe is provided on the output shaft of the stepper motor. The vertical support, the clamp body, the angle fixing block, the first locking member, the second locking member, and the rotating fixing seat are all made of non-conductive material.

2. The measuring and fixing fixture for the field strength probe according to claim 1, characterized in that: A motor mounting slot is provided on the inclined mounting surface, and the stepper motor is fixed in the motor mounting slot.

3. The measuring and fixing fixture for the field strength probe according to claim 1, characterized in that: The fixture body is also fixedly equipped with a frequency response mounting bracket.

4. The measuring and fixing fixture for the field strength probe according to claim 3, characterized in that: The clamp body has a U-shaped groove that runs vertically through it, and the opening of the U-shaped groove is located at one end of the clamp body. The U-shaped groove has a semi-circular groove on each of its two opposite side walls, and the vertical rod is inserted between the two semi-circular grooves. The opening of the U-shaped groove has a first locking hole and a second locking hole on two opposite side walls; the first locking member is a first locking bolt, and the threaded section of the first locking bolt passes through the first locking hole and is threaded into the second locking hole.

5. The measuring and fixing fixture for the field strength probe according to claim 4, characterized in that: The U-shaped groove has a mounting section located on the side of the semicircular groove away from the opening of the U-shaped groove; The frequency response mounting bracket is fixed to the mounting section by a third locking element.

6. The measuring and fixing fixture for the field strength probe according to claim 5, characterized in that: The clamp body has an avoidance arc groove on the side wall corresponding to the mounting section.

7. The measuring and fixing fixture for the field strength probe according to claim 1, characterized in that: The fixture body has two parallel elongated slots that extend through the top and bottom. At least two connecting and fixing holes are provided at the bottom of the angle fixing block corresponding to the positions of each of the elongated slots; the second locking member is a plurality of second locking bolts, each of which corresponds to a connecting and fixing hole; the threaded end of the second locking bolt passes through the elongated slot and is threaded into the corresponding connecting and fixing hole.

8. The measuring and fixing fixture for the field strength probe according to claim 1, characterized in that: The vertical support includes a circular base and a vertical rod; the circular base is fixed to the lower end of the vertical rod.

9. The measuring and fixing fixture for the field strength probe according to claim 7, characterized in that: The vertical support, the clamp body, the angle fixing block, the first locking member, the second locking member, and the rotating fixing seat are all made of polytetrafluoroethylene.

10. The measuring and fixing fixture for the field strength probe according to claim 2, characterized in that: The stepper motor is bonded and fixed in the motor mounting slot.

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