CN114352860A - Probe strutting arrangement - Google Patents
Probe strutting arrangement Download PDFInfo
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- CN114352860A CN114352860A CN202111484614.8A CN202111484614A CN114352860A CN 114352860 A CN114352860 A CN 114352860A CN 202111484614 A CN202111484614 A CN 202111484614A CN 114352860 A CN114352860 A CN 114352860A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/043—Allowing translations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/043—Allowing translations
- F16M11/046—Allowing translations adapted to upward-downward translation movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
- F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
- F16M11/14—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction with ball-joint
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
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- Engineering & Computer Science (AREA)
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Abstract
The invention provides a probe supporting device, which comprises a supporting frame; a probe fixing member for fixing the probe; the lifting mechanism is used for driving the probe fixing piece to reciprocate along the vertical direction; the moving mechanism is used for driving the probe fixing piece and the lifting mechanism to do arc motion in a horizontal plane; the probe holder is configured to be spherically rotatable to adjust the attitude of the probe. The probe supporting device can realize spatial position scanning to obtain the power density of each field point, and meets the probe supporting and scanning advancing requirements applied to the radiation field integration method for measuring power.
Description
Technical Field
The invention relates to the technical field of microwave testing. And more particularly, to a probe supporting device.
Background
The antenna is a microwave radiator, and microwave power can be radiated into free space to form field intensity. For the microwave power fed into the antenna, the measurement is usually performed by combining a directional coupler and a power meter into a "loop". However, for power with larger amplitude, the way measurement mode cannot accurately measure the power because the tracing path of the high-power attenuation parameter cannot be solved. Therefore, the power density can be calculated by measuring the field intensity radiated into the space by the antenna by adopting a radiation field integration method, and then the power density is integrated to obtain the microwave power fed into the antenna. The principle of the radiation field integral power measurement method is as follows:
assuming that the power density of each point on a sphere with radius r of the far field of radiation is
In the formula:
is the power density at the receiving antenna;
the receiving power of the test point; a. theeThe effective area of the receive antenna. Then transmit power
In the formula: r is rsin theta, R is the distance from the phase center to the test point, R is the radius of the test surface, and for a rotationally symmetrically distributed radiation field, equation (2) is simplified to
Considering that it is difficult to accurately obtain the power density distribution of each point on the entire spherical surface, the spatial power distribution can be reversely deduced in actual measurement by measuring the 1-dimensional discrete distribution of the principal plane, as shown in fig. 6. The area a is summed integratedly in a plane perpendicular to the antenna axis and the area is summed discretely for a rotationally symmetrically distributed radiation field (as shown in fig. 7) with
In the formula: siThe power density at the ith measuring point is; riIs the distance (R) between the ith measuring point and the radiation center point0＝0)。
Therefore, only the received power at the ith point needs to be measured, the power density can be obtained through the effective area by using the formula (1), and the radiation power of the microwave source can be obtained by using the formula (4) under the condition that the distance between the ith point and the radiation central point is known.
However, the existing probe supporting device is usually used for positioning at a fixed distance from the radiation source, and only up-down, left-right, front-back and pitching adjustment can be performed under the condition, so that the existing probe supporting device does not have a space scanning function.
In summary, the radiation field integration method is used to measure the microwave power of the radiation source, and a probe supporting device is needed to complete the spatial position scanning to obtain the power density of each field point.
Disclosure of Invention
Aiming at the problems, the invention provides a probe supporting device to solve the problem that the existing supporting device cannot meet the requirements of probe supporting and scanning advancing applied to the power measurement by a radiation field integration method.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a probe supporting device, comprising:
a support frame;
a probe fixing member for fixing the probe;
the lifting mechanism is used for driving the probe fixing piece to reciprocate along the vertical direction; and
the moving mechanism is used for driving the probe fixing piece and the lifting mechanism to do arc motion in a horizontal plane;
the probe holder is configured to be spherically rotatable to adjust the attitude of the probe.
Further, it is preferable that the moving mechanism includes:
an arc-shaped supporting seat combined and fixed on the supporting frame; the arc guide rail is fixed on the arc support seat; a moving plate arranged on the arc-shaped guide rail; and a driving device for driving the moving plate to reciprocate along the extending direction of the arc-shaped guide rail.
In addition, preferably, the inner side edge of the arc-shaped guide rail is provided with an arc-shaped rack;
the driving device comprises a driving motor positioned on the moving plate and a gear arranged on an output shaft of the driving motor; the gear is meshed with the arc-shaped rack; the driving motor is configured to drive the moving plate to reciprocate along the extending direction of the arc-shaped guide rail through the matching of the gear and the arc-shaped rack.
Further, it is preferable that the elevating mechanism includes:
a linear module fixed on the movable plate through the fixed seat, and a probe fixed part arranged on the movable part of the linear module;
the linear module is arranged along the vertical direction; the linear module is configured to drive the probe fixture to reciprocate in a vertical direction.
In addition, preferably, the probe fixing piece is fixedly combined with the moving part of the linear module through a probe supporting seat, and the probe supporting seat comprises an L-shaped connecting plate connected with the moving part; and a displacement assembly with one end fixed with the L-shaped connecting plate;
the L-shaped connecting plate comprises a first plate body fixed with the moving part and a second plate body with one end fixed with the first plate body; a strip-shaped hole is formed in the other end of the second plate body;
the displacement assembly comprises a cross beam and a displacement block arranged on the cross beam;
the cross beam is configured to be located in the strip-shaped hole at one end and can move along the extending direction of the strip-shaped hole;
the displacement block is configured to be movable in an extending direction of the cross member.
In addition, preferably, the displacement block comprises a spherical cavity groove; the probe fixing piece comprises a spherical bulge; the spherical bulge is arranged in the spherical cavity groove.
In addition, preferably, an assembly plate is arranged on the supporting frame, and the assembly plate comprises a wave-absorbing material.
Furthermore, it is preferable that the bottom surface of the support frame is provided with universal wheels.
In addition, preferably, the probe supporting device further comprises a control system; the control system comprises an upper computer used for inputting probe movement information and sending a probe movement signal; a controller for controlling the lifting mechanism and the moving mechanism; the controller is configured to receive a probe motion signal sent by the upper computer and control the lifting mechanism and the moving mechanism to move.
Furthermore, it is preferable that the moving plate includes an encoder thereon for feeding back position information of the moving plate to the control system.
The invention has the beneficial effects that:
the invention controls the movement of the lifting structure and the moving mechanism through the control system, moves and stays according to requirements, so that the probe can perform two-axis movement of linear lifting and circular rotation, and the movement information of the probe is acquired, recorded and fed back. And the posture of the probe can be adjusted by utilizing the probe fixing piece. For a power measurement method based on radiation field integration, the probe supporting device provided by the invention can ensure that the probe can continuously advance and reside in the coverage space range of the main beam of the radiation antenna, so that the field intensity of each bit plane in the radiation space can be obtained. In addition, by means of the probe supporting device, mutual verification of a radiation field integration method and a directional coupler-power meter road measurement method in a medium-low power environment can be achieved, a power parameter tracing and quantity transmission system is further improved, and the measurement guarantee requirement of power parameters is met.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an enlarged view at the moving mechanism of the present invention.
Fig. 3 is a schematic structural view of the lifting mechanism of the present invention.
FIG. 4 is a schematic view of the L-shaped connecting plate of the present invention in cooperation with a probe mount.
Fig. 5 is a circuit block diagram of the present invention.
Fig. 6 is a schematic view of radiation field measurement.
Fig. 7 is a schematic diagram of summing the area discrete integrals.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The high-power pulse is widely applied to the fields of national defense and military industry such as pulse radar, phased array radar, remote measurement and the like, and the accurate measurement cannot be carried out in a 'road' mode generally because a complete traceability system is not established for attenuation parameters under the high-power condition in the quantity value calibration. Therefore, the pulse power measurement method based on radiation field integration is the only accurate measurement way at present, but the existing supporting device cannot realize the space position scanning function, so that people cannot use the radiation field integration method to measure the radiation power.
The problem that the existing supporting device cannot realize space position scanning to obtain the power density of each field point is solved. The invention provides a probe supporting device, which is combined with figures 1 to 5, and mainly comprises a mechanical structure and a control system.
In order to meet the requirement that the probe moves according to a specific track and ensure that the probe moves stably and reliably, the mechanical structure is divided into three parts, namely a support frame 10, a moving mechanism 40 and a lifting mechanism 30, and each part realizes different functions respectively.
In particular the probe support device comprises: a support frame 10; a probe holder 20 for holding the probe; a lifting mechanism 30 for driving the probe fixture 20 to reciprocate in a vertical direction; and a moving mechanism 40 for driving the probe fixing member 20 and the lifting mechanism 30 to make an arc motion in a horizontal plane; the probe holder 20 is configured to be spherically rotatable to adjust the posture of the probe, and the overall structural layout is shown in fig. 1. And the exposed metal part of the probe supporting device is coated with wave-absorbing materials, and the wiring of the components is required to be coated with a shielding layer.
In a specific embodiment, referring to fig. 2, the moving mechanism 40 includes: an arc-shaped support base 41 combined and fixed on the support frame 10; an arc guide rail 42 fixed to the arc support base 41; a moving plate 43 disposed on the arc guide rail 42 through a slider; and a driving means for driving the moving plate 43 to reciprocate along the extending direction of the arc rail 42.
Further, two arc-shaped guide rails 42 are respectively arranged on the arc-shaped support seats 41; an arc-shaped rack 45 is arranged at the inner side edge of one arc-shaped guide rail 42; the driving means includes a driving motor 44 provided on the moving plate 43 and a gear provided on an output shaft of the driving motor 44; the gear is meshed with the arc-shaped rack 45; the driving motor 44 is configured to drive the moving plate 43 to reciprocate along the extending direction of the arc-shaped guide rail 42 through the cooperation of the gear and the arc-shaped rack 45.
The moving mechanism 40 is mainly used for carrying the lifting mechanism 30 and the probe to realize movement along an arc line, and the transmission mode of the moving mechanism 40 is as follows: the gear and the arc-shaped rack 45 are in meshed transmission, and the arc-shaped guide rail 42 guides. The design requires that the probe need be along the cambered surface motion that radius R is 3 meters, judges according to the operating mode, and the drive mode that can stably realize the cambered surface motion is that gear + arc rack 45 meshes the transmission, and cooperation arc guide rail 42 carries out accurate direction, and arc rack 45 and two arc guide rail 42 satisfy certain concentricity requirement, guarantee to operate steadily.
The driving motor 44 calculates output power according to load, transmission efficiency and the like by calculating a reduction ratio, and selects a servo motor with 200W power, a band-type brake and a speed reducer; according to the scheme design, the driving motor 44 adopts an alternating current servo motor, and the basic parameters are as follows; rated power: 200W; rated voltage: 220V; rated current: 1.2A; rated rotation speed: 3000 RPM; rated torque: 0.637 N.M; back electromotive force: 30.9V; inertia of the rotor: 0.175x10-4Kg.m 2; band-type brake voltage: 24V.
Movement parameters of the moving mechanism 40: the movement angle is larger than 60 degrees (namely 3m chord length), and the maximum movement speed is 10 cm/s.
Since the moving plate 43 needs to carry the lifting mechanism 30 and move together with the probe, the center of gravity of the moving plate 43 may shift due to the installation of the linear module 32, and a counterweight is added on the other side of the moving plate 43 for balance.
Since the arc-shaped guide rail 42, the moving plate 43 and the arc-shaped rack 45 are all core non-standard parts, the device is customized as required.
The arc-shaped rack 45 can be provided with two gears, one of the gears is connected to the rotating shaft of the driving motor 44 through a coupler, the other gear is a driven gear, and a damper is installed to reduce the error of the meshing clearance.
Mechanical anti-collision and anti-falling devices are arranged at the beginning and the end of the arc-shaped supporting seat 41, and an electrical limit switch is arranged.
The distance between the guide rail wheel sets or the sliding blocks is reasonably arranged, so that the movable plate 43 is prevented from tipping along the tangential direction; a safety wheel set is arranged to prevent the moving plate 43 from tipping along the diameter direction; and a graduated scale is arranged on the arc-shaped supporting seat 41, so that the position of the moving plate 43 can be fed back visually.
Since the arc-shaped supporting seat 41, the moving plate 43 and other parts need to be designed and processed in a non-standard way, the parts are all bearing parts, and preferably metal materials are selected.
In a specific embodiment, as shown in fig. 2 and 3, the lifting mechanism 30 includes: a linear module 32 fixed on the moving plate 43 by the fixed seat 31, and a probe fixing member 20 arranged on the moving part of the linear module 32; the linear module 32 is arranged along the vertical direction; the linear module 32 is configured to drive the probe fixture 20 to reciprocate in the vertical direction.
Further, the probe fixing member 20 is fixedly coupled to the moving portion of the linear module 32 through a probe supporting seat 50, and the probe supporting seat 50 includes an L-shaped connecting plate 51 connected to the moving portion; and a displacement assembly 52 having one end fixed to the L-shaped connecting plate 51; the L-shaped connecting plate 51 includes a first plate 511 fixed to the moving part and a second plate 512 having one end fixed to the first plate 511; a strip-shaped hole is formed in the other end of the second plate body 512; the displacement assembly 52 comprises a beam 521 and a displacement block 522 arranged on the beam 521; the beam 521 is configured to have one end located in the bar-shaped hole and to be movable along the extending direction of the bar-shaped hole; the displacement block 522 is configured to be movable in the extending direction of the beam 521.
In order to realize the adjustment of the probe posture, the displacement block 522 comprises a spherical cavity groove; the probe fixing part 20 comprises a spherical bulge; the spherical protrusions are arranged in the spherical cavity grooves, so that the probe fixing piece 20 drives the probe to rotate in a spherical manner through the matching of the spherical protrusions and the spherical cavity grooves.
The lifting mechanism 30 is mainly used for carrying a probe to realize linear lifting movement, the probe supporting seat 50 is fixed on the side face of the moving part of the lifting mechanism 30 and is made of nonmetal, and as shown in fig. 4, an L-shaped connecting plate 51 is arranged to avoid wave-absorbing materials on the linear module 32, the probe is fixed on the probe fixing part 20 and can rotate on the probe fixing part 20 for 360 degrees, and the probe is connected with the probe fixing part 20 through a probe rotating disc in an axle hole; the bottom of the probe fixing piece 20 is connected with the displacement block 522 by adopting a spherical bulge, so that the probe can be twisted for 360 degrees within a certain swing angle range, and the posture of the probe can be flexibly adjusted. The displacement block 522 is connected with the cross beam 521 through a square hole, a sliding groove is formed in the bottom of the cross beam 521, the probe and the probe fixing piece 20 can move left and right after the adjusting screw is loosened, centering adjustment is carried out, and the adjusting screw is locked when the position is adjusted to a required position; the beam 521 is connected with the L-shaped connecting plate 51 by a long hole, and is adjusted and locked by an adjusting screw.
The linear module 32 may be a ball screw linear module. The linear module 32 is a core component in the lifting mechanism 30, realizes linear lifting motion, and can stably realize the transmission mode of linear lifting mainly as follows: synchronous belt drive and gear rack drive.
The linear module 32 comprises a speed reducing motor, the output power is calculated by calculating the transmission ratio and considering the transmission efficiency, the load and the like, the speed reducing motor selects a servo motor with the power of 100W, and is matched with a speed reducer, the motor is provided with a band-type brake and the like; according to the scheme design, the speed reducing motor adopts an alternating current servo motor, and the basic parameters are as follows; rated power: 100W; rated voltage: 220V; rated current: 1.1A; rated rotation speed: 3000 RPM; rated torque: 0.318 N.M; back electromotive force: 22V; inertia of the rotor: 0.052x10-4Kg.m 2; band-type brake voltage: 24V.
Movement parameters of the lifting mechanism 30: the effective stroke of 2.05m is larger than the required 2m, the maximum lifting speed is 10cm/s, and the load of the moving part is larger than 10 kg.
The lifting mechanism 30 further comprises a drag chain, the drag chain is made of plastic, the bending radius is larger than R100, and normal use of the optical fiber data line is guaranteed; and a fine adjustment mechanism can be arranged to realize fine adjustment of the position and the angle of the probe so as to ensure the position of the probe. The lifting mechanism 30 is provided with a graduated scale to visually feed back the position; limit switches are arranged at the beginning and the end of the stroke of the linear module 32; other adapters, fasteners, etc., require non-standard design and processing, preferably of non-metallic materials.
In a specific embodiment, rollers are provided on the bottom surface of the support frame 10; the rollers are universal wheels 12, and the universal wheels 12 need to be provided with 6-8 groups and are provided with locking mechanisms.
The main function of the support frame 10 is to stably support the entire probe support device, and the level of the support frame 10 can be adjusted by using a manual leveling lifting module according to the level bubble display.
High strength and rigidity are required in view of the weight of the entire probe supporting device to be carried and the inertia in motion. But the strength of the non-metal material is not easy to guarantee, the tailor-welding process of the steel square tube is relatively complex, the steel square tube becomes a whole after welding, and the steel square tube is not easy to disassemble, assemble and move in the later period; the aluminum profile is easy to assemble and disassemble, other parts are convenient to connect and install, the specification is rich, the application is wide, and the aluminum profile has good appearance and antifouling and antirust capabilities, so that the aluminum profile is selected for use in a lap joint mode, and standard parts for the profile are selected for use in connection.
In addition, a mounting plate is required to be arranged on the front surface of the supporting frame 10, and the mounting plate is used for installing and fixing the wave-absorbing material.
In a specific embodiment, as shown in fig. 5, the probe supporting device further includes a control system; the control system comprises an upper computer used for inputting probe movement information and sending a probe movement signal; a controller for controlling the lifting mechanism 30 and the moving mechanism 40; the controller is configured to receive a probe motion signal sent by the upper computer and control the lifting mechanism 30 and the moving mechanism 40 to move.
Further, the moving plate 43 includes an encoder 46 for feeding back the position information of the moving plate 43 to the control system.
The control system is mainly matched with electromagnetic wave testing equipment to complete the scanning of the probe according to a specified motion track. The controller (lower computer) needs to realize motion control in two directions: up-down lifting movement and rotation movement in the direction of circular arc. The controller obtains the motion parameter instruction from the host computer, then control servo motor realizes the accurate motion of position, disposes limit switch and guarantees safety. The moving mechanism 40 is provided with a tachometer wheel and encoder 46 which, on the one hand, eliminates gear backlash and, on the other hand, enables position feedback to be achieved and speed and position signals to be obtained. The controller is communicated with an upper computer (a test control platform), on one hand, the controller mainly performs motion control, information acquisition, fault alarm and the like according to the set parameters of the upper computer, and on the other hand, the upper computer mainly has the functions of motion set parameters, information display, equipment management, fault diagnosis and the like.
The limit switches in the invention are all inductive, and 8 limit switches are respectively placed at two ends of the lifting mechanism 30, 2 limit switches are respectively placed at two ends of the moving mechanism 40, and the number of the limit switches is 2. The specification is as follows: m12; detecting the distance: 5mm +/-10%; standard object 18x18-1 mm; and (3) controlling and outputting: 5-200 MA; power supply: 12-24 VDC.
Regarding the synchronizing wheel and the encoder 46 that tests the speed, it is specific, and the test synchronizing wheel is elevating system 30 and 40's of moving mechanism position feedback mechanism, and the diameter selects 50mm, and the wheel inner core is the aluminum alloy, and outside package polyurethane prevents to skid, and the encoder 46 is for photoelectric encoder.
Furthermore, the lifting mechanism 30 directly drives a ball screw by adopting a servo motor, the ball screw drives a moving part on the linear guide rail, the moving part is provided with a probe supporting seat 50, and the position is controlled in a closed loop mode by an encoder arranged on the servo motor, so that the high-precision motion positioning of the probe is realized; the circular arc direction rotating and reciprocating motion is realized by adopting a servo motor and a reducer to drive a gear to move on a rack, so that the integral rotating motion of the upper moving plate 43 of the arc-shaped guide rail 42 and the lifting mechanism 30 is realized; because the clearance is inevitably formed between the gear and the rack, if the position control is carried out by adopting the encoder of the servo motor, when the servo motor rotates reversely, a larger clearance error exists, so that a gear (a gear shaft is matched with a high-precision encoder) with the same size as the gear is added, and a gear set capable of eliminating the clearance during the reverse rotation is formed.
In conclusion, the invention controls the motion of the lifting structure and the moving mechanism through the control system, moves and stops according to requirements, so that the probe can perform two-axis motion of linear lifting and circular rotation, and simultaneously acquires, records and feeds back the motion information of the probe, and can also adjust the posture of the probe by utilizing the probe fixing piece, realize a radiation field integration algorithm and finish the measurement of the power of a road by a field method. For a power measurement method based on radiation field integration, the probe supporting device provided by the invention can ensure that the probe can continuously advance and reside in the coverage space range of the main beam of the radiation antenna, so that the field intensity of each bit plane in the radiation space can be obtained. In addition, by means of the probe supporting device, mutual verification of a radiation field integration method and a directional coupler-power meter road measurement method in a medium-low power environment can be achieved, a power parameter tracing and quantity transmission system is further improved, and the measurement guarantee requirement of power parameters is met.
The invention can physically realize the power measurement method based on the radiation field integration, and adopts the traceable space field measurement method to solve the problem that the high power cannot be accurately measured on the road; this strutting arrangement has reached the purpose of probe accurate positioning in bow-shaped cambered surface space, in addition, owing to can slide on the arc guide rail to and carry out the displacement on linear guide rail, just also possessed certain degree of freedom in the cambered surface test space that this probe strutting arrangement covered, had certain adaptability to the change in test area.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. A probe support device, comprising:
a support frame;
a probe fixing member for fixing the probe;
the lifting mechanism is used for driving the probe fixing piece to reciprocate along the vertical direction; and
the moving mechanism is used for driving the probe fixing piece and the lifting mechanism to do arc motion in a horizontal plane;
the probe holder is configured to be spherically rotatable to adjust the attitude of the probe.
2. The probe support device of claim 1, wherein the movement mechanism comprises:
an arc-shaped supporting seat combined and fixed on the supporting frame; the arc guide rail is fixed on the arc support seat; a moving plate arranged on the arc-shaped guide rail; and a driving device for driving the moving plate to reciprocate along the extending direction of the arc-shaped guide rail.
3. The probe supporting device according to claim 2, wherein the inner side edge of the arc-shaped guide rail is provided with an arc-shaped rack;
the driving device comprises a driving motor positioned on the moving plate and a gear arranged on an output shaft of the driving motor; the gear is meshed with the arc-shaped rack; the driving motor is configured to drive the moving plate to reciprocate along the extending direction of the arc-shaped guide rail through the matching of the gear and the arc-shaped rack.
4. The probe support device of claim 2, wherein the lift mechanism comprises:
a linear module fixed on the movable plate through the fixed seat, and a probe fixed part arranged on the movable part of the linear module;
the linear module is arranged along the vertical direction; the linear module is configured to drive the probe fixture to reciprocate in a vertical direction.
5. The probe supporting device according to claim 4, wherein the probe fixing member is fixedly combined with the moving part of the linear module through a probe supporting seat, and the probe supporting seat comprises an L-shaped connecting plate connected with the moving part; and a displacement assembly with one end fixed with the L-shaped connecting plate;
the L-shaped connecting plate comprises a first plate body fixed with the moving part and a second plate body with one end fixed with the first plate body; a strip-shaped hole is formed in the other end of the second plate body;
the displacement assembly comprises a cross beam and a displacement block arranged on the cross beam;
the cross beam is configured to be located in the strip-shaped hole at one end and can move along the extending direction of the strip-shaped hole;
the displacement block is configured to be movable in an extending direction of the cross member.
6. The probe support device of claim 5, wherein the displacement block includes a spherical cavity slot thereon; the probe fixing piece comprises a spherical bulge; the spherical bulge is arranged in the spherical cavity groove.
7. The probe supporting device of claim 1, wherein a mounting plate is arranged on the supporting frame, and the mounting plate comprises a wave-absorbing material.
8. The probe support device of claim 1, wherein the bottom surface of the support frame is provided with universal wheels.
9. The probe support device of claim 1, further comprising a control system; the control system comprises an upper computer used for inputting probe movement information and sending a probe movement signal; a controller for controlling the lifting mechanism and the moving mechanism; the controller is configured to receive a probe motion signal sent by the upper computer and control the lifting mechanism and the moving mechanism to move.
10. The probe support device of claim 9, wherein the moving plate includes an encoder thereon for feeding back position information of the moving plate to the control system.
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| CN114352860B (en) | 2024-03-19 |
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