CN212229046U

CN212229046U - Scanning frame and camera bellows

Info

Publication number: CN212229046U
Application number: CN202020008072.1U
Authority: CN
Inventors: 曹宝华
Original assignee: NANJING JIEXI TECHNOLOGY CO LTD
Current assignee: NANJING JIEXI TECHNOLOGY CO LTD
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-12-25
Anticipated expiration: 2030-01-03

Abstract

The utility model provides a scanning frame and camera bellows, scanning frame include the probe, be used for the first linear motion mechanism of drive probe back-and-forth movement, be used for the second linear motion mechanism that the drive probe removed, be used for third linear motion mechanism, motion control ware that the drive probe reciprocated and the distance sensor who is connected with motion control ware. The invention has convenient adjustment and high test efficiency.

Description

Scanning frame and camera bellows

Technical Field

The utility model belongs to the antenna measurement technique specifically is a scanning frame and camera bellows.

Background

The OTA measuring method of the 5G Massive MIMO antenna is a research hotspot in the field of communication antennas at present, a darkroom testing system is an important tool in the OTA measuring system of the 5G Massive MIMO antenna, a scanning frame in the darkroom testing system is used for moving a probe, and a plurality of scanning frames which are generally used move the probe up and down left and right, for example, the utility model with the patent number of 201820090748.9 discloses a portable testing dark box which can rapidly change the relative distance between a product to be tested and the probe by increasing or decreasing the number of shielding box bodies, thereby improving the testing efficiency; simultaneously, move about, coaxial rotary motion or vertical reciprocating about through the scanning frame drive probe level, specifically, move about along horizontal slide rail through drive horizontal slider, change the horizontal position of probe, reciprocate along vertical slide rail through drive vertical slider, change the vertical position of probe, it is rotatory through the drive revolving stage, can drive the probe and carry out forward or reverse rotation along its axis to can realize diversified comprehensive test, and then make its test result more accurate. However, this solution has the following drawbacks:

1. the probe cannot rotate in a pitching mode, cannot test the inclination angle direction of a product to be tested, and is difficult to acquire comprehensive test data;

2. this technical scheme need be according to the product that awaits measuring and the different distance requirement between the test probe, remove or assemble the connecting box between probe case and the product supporting box that awaits measuring, adjust the relative distance between the product that awaits measuring and the probe through increase or less shielding case body quantity, if this regulation mode is more crude, not meticulous enough and continuous, and apart from adjusting loaded down with trivial details, with high costs, influence efficiency of software testing.

3. The scanning frame can not move forwards and backwards, and the testing efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a scanning frame and camera bellows.

Realize the utility model discloses the technical solution of purpose does: a scanning frame comprises a probe, a first linear motion mechanism for driving the probe to move back and forth, a second linear motion mechanism for driving the probe to move left and right, a third linear motion mechanism for driving the probe to move up and down, a motion controller for being electrically connected with the first linear motion mechanism, the second linear motion mechanism and the third linear motion mechanism, and a distance sensor connected with the motion controller.

Preferably, the device comprises a first driving module for driving the probe to perform the pitching motion and a second driving module for driving the probe to perform the polarization rotation motion.

Preferably, the first driving module is connected with an output end of the motion controller, the probe is connected with the second driving module, and the second driving module is arranged at an output end of the first driving module moving module.

Preferably, the first and second drive modules are gear boxes or motor modules.

Preferably, the third linear motion mechanism is provided with a plurality of groups of mounting holes for fixing the first connecting flange along the height direction, and the distance sensor is fixed on the third linear motion mechanism through the first connecting flange.

Preferably, tank chains are arranged on the first linear motion mechanism and the second linear motion mechanism.

Preferably, the motion controller is a three-axis motion controller.

Preferably, the first linear motion mechanism includes a first slide rail and a first slide block sliding along the first slide rail, the second linear motion mechanism includes a second slide rail and a second slide block sliding along the second slide rail, the third linear motion mechanism includes a third slide rail and a third slide block sliding along the third slide rail, the second slide rail is disposed on the first slide block and perpendicular to the first slide rail, the third slide rail is disposed on the second slide block and perpendicular to the first slide rail and the second slide rail, the probe is disposed on the third slide block, and the motion controller is electrically connected to the driving modules disposed on the first slide block, the second slide block and the third slide block.

The invention also provides a camera bellows, which comprises a camera bellows body, wherein the scanner frame is arranged in the camera bellows body.

Preferably, the camera bellows body includes probe case and the product support box that awaits measuring, and probe case and the product support box that awaits measuring can be dismantled and connect or connect through the shielded cell, and the scanning frame is arranged in the probe case.

Compared with the prior art, utility model, its apparent advantage does: the utility model arranges the probe on the slide rail, realizes the up-and-down, left-and-right, and front-and-back movement of the probe through the slide rail, meets the different distance requirements between the product to be tested and the test probe, and has convenient adjustment, low cost and high test efficiency; the probe in the invention can rotate along the pitching and polarizing directions, so that comprehensive test data can be conveniently obtained.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of an automatic range-finding gantry for a camera bellows.

FIG. 2 is a schematic view of a camera bellows.

Fig. 3 is a schematic diagram of a gantry control circuit.

Detailed Description

As shown in fig. 1, a scanning gantry includes a probe 10, a first linear motion mechanism 95 for driving the probe 10 to move forward and backward, a second linear motion mechanism 94 for driving the probe 10 to move left and right, a third linear motion mechanism 91 for driving the probe 10 to move up and down, a motion controller, and a distance sensor 11 connected with the motion controller, wherein the motion controller is electrically connected with the first linear motion mechanism 95, the second linear motion mechanism 94, and the third linear motion mechanism 91 and drives the first linear motion mechanism 95, the second linear motion mechanism 94, and the third linear motion mechanism 91 to work.

In a further embodiment, the first linear motion mechanism 95 includes a first slide rail and a first slider that slides along the first slide rail, the second linear motion mechanism 94 includes a second slide rail and a second slider that slides along the second slide rail, the third linear motion mechanism 91 includes a third slide rail and a third slider that slides along the third slide rail, the second slide rail is disposed on the first slider and perpendicular to the first slide rail, the third slide rail is disposed on the second slider and perpendicular to the first slide rail and the second slide rail, the probe is disposed on the third slider, and the motion controller is connected to the driving modules disposed on the first slider, the second slider, and the third slider.

In some embodiments, the first slide rail is vertically disposed, the second slide rail is horizontally disposed, and the third slide rail is vertically disposed, such that in response to the motion controller, the first slide block slides back and forth to drive the probe to move back and forth, the second slide block slides left and right to drive the probe to move left and right, and the third slide block slides up and down to drive the probe 10 to move up and down.

Furthermore, the first slide block and the second slide rail are of an integrated structure, that is, two ends of the second slide rail are arranged in the first slide rail and slide along the first slide rail.

It should be noted that the first sliding block and the second sliding rail can also be detachable structures, such as being connected by screws.

In a further embodiment, a first driving module 92 for driving the probe 10 to perform a pitch motion and a second driving module 93 for driving the probe 10 to perform a polarization rotation motion are included.

In a further embodiment, the first driving module 92 is connected to a motion controller, the second driving module 93 is disposed at an output end of the first driving module 92, and the probe 10 is disposed at an output end of the second driving module 93. Preferably, the positions of the first driving module 92 and the second driving module 93 are interchangeable.

Preferably, the first and

second drive modules

92 and 93 are gear boxes or motor modules. When manual adjustment is carried out, the first driving module and the second driving module adopt a gear box reducer and a hand crank to carry out angle adjustment; and if the electrification adjustment is carried out, the first driving module and the second driving module adopt the motor module for adjustment.

In one embodiment, the turbine gearbox is fixed to the third sliding block by a clamp, the motor module is disposed on an output shaft of the turbine gearbox, and the horn antenna as the probe is disposed on a rotating shaft of the motor module by a second connecting flange. The turbine gear box drives the horn antenna to do pitching motion, and the motor module drives the horn antenna to do polarization rotation.

In a further embodiment, a plurality of sets of mounting holes for fixing the first connecting flange 99 are formed in the third slide rail along the height direction, and the distance sensor 11 is fixed on the third slide block through the first connecting flange 99. Set up the multiunit mounting hole so that distance sensor 11 is adjustable in the height along the direction of height to adjust distance sensor 11's height according to the mounting height of the product that awaits measuring, be favorable to distance sensor 11 to gather accurately its and the product that awaits measuring between the distance.

In a further embodiment, tank chains are respectively arranged on the first linear motion mechanism 95 and the second linear motion mechanism 94, and are used for placing cables such as radio frequency cables, control cables, power cables and the like, so as to ensure that the cables can move orderly in the moving process.

In a further embodiment, as shown in fig. 3, the motion controller is a three-axis motion controller, model number fuyuac4030, and the AMC4030 controller may be connected to the PC via USB cables to form a hierarchical online motion control. When AMC4030 is used as an online motion system, a user can edit various motion control instructions through PC-based upper computer application software and perform real-time monitoring of the control system. The motion controller completes the execution of all motion trail control and the response of the control command.

In a further embodiment, the distance sensor 11 is an infrared distance meter with the model of SICK DX50-2 and is communicated with the motion controller AMC4030 through a serial port.

The utility model discloses a working process does:

under the control of the motion controller, the distance between the probe and a product to be detected is preset, the scanning frame is initialized, the initialized position is the position where the probe is aligned with the product to be detected, the distance sensor 11 collects the actual measurement distance between the scanning frame and the product to be detected and feeds the actual measurement distance back to the motion controller, the motion controller obtains the actual measurement distance between the probe and the product to be detected through addition and subtraction calculation according to the distance, and the actual measurement distance is compared with the preset distance to adjust the first sliding block, the second sliding block and the third sliding block to the preset distance.

As shown in fig. 2, the utility model also provides a camera bellows, including the camera bellows body, this internal foretell carriage that is equipped with of camera bellows.

Further, the camera bellows body includes probe case 2 and the product supporting box 1 that awaits measuring, and probe case 2 and the product supporting box 1 that awaits measuring can be dismantled and connect or connect through the shielded cell, and the scanning frame is arranged in probe case 2.

Be provided with ventilation waveguide window 3 on probe case 2 and the product supporting box 1 that awaits measuring, the equipartition is full with absorbing material in probe case 2 and the product supporting box 1 that awaits measuring the truckle 4 that can freely remove and lock is all installed to probe case 2 and the product supporting box 1 bottom that awaits measuring.

The probe box 2 and the supporting box 1 of the product to be detected are fixedly connected together through fixed lock catches 5 arranged on the two sides and the top of the box body, and conductive linings or beryllium copper reeds are uniformly distributed at the joints of the box body.

The first linear motion mechanism 95 drives the probe 10 to move forward and backward toward the product 6 to be measured.

The product support box 1 to be tested is provided with an openable shielding door, the inner side of the shielding door is fully covered with wave-absorbing materials, and a drawer or holding rod waiting test product mounting rack device 8 capable of mounting a product 6 to be tested is arranged in the product support box 1 to be tested.

The product 6 to be tested is a base station.

The surfaces of the supporting box 1 and the probe box 2 of the product to be detected are both provided with handles 7, so that the probe box is convenient to mount.

Under the condition that the number of the box bodies is not changed, for example, only the probe box 2 and the product supporting box 1 to be tested are used, the distance is automatically measured, the sliding rail is moved back and forth to adjust the distance between the product 6 to be tested and the test probe 10, and the method is convenient and quick.

The utility model arranges the probe 10 on the slide rail, realizes the up-and-down, left-and-right, and front-and-back movement of the probe through the slide rail, meets the different distance requirements between the product to be tested and the test probe, and has convenient adjustment, low cost and high test efficiency; the probe in the invention can rotate along the pitching and polarizing directions, so that comprehensive test data can be conveniently obtained.

The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The scanning frame is characterized by comprising a probe (10), a first linear motion mechanism (95) for driving the probe (10) to move back and forth, a second linear motion mechanism (94) for driving the probe (10) to move left and right, a third linear motion mechanism (91) for driving the probe (10) to move up and down, a motion controller electrically connected with the first linear motion mechanism (95), the second linear motion mechanism (94) and the third linear motion mechanism (91), and a distance sensor (11) connected with the motion controller.

2. Gantry according to claim 1, characterized by comprising a first drive module (92) for driving the probe (10) in a pitch motion, a second drive module (93) for driving the probe (10) in a polarisation rotation motion.

3. The gantry according to claim 2, wherein the first drive module (92) is connected to a motion controller, and the probe is connected to a second drive module (93), the second drive module (93) being arranged at an output of the first drive module (92).

4. Gantry according to claim 3, characterized in that the first drive module (92) and the second drive module (93) are gear boxes or motor modules.

5. The gantry according to claim 1, wherein the third linear motion mechanism (91) is provided with a plurality of sets of mounting holes for fixing a first connecting flange (99) in a height direction, and the distance sensor (11) is fixed on the third linear motion mechanism by the first connecting flange (99).

6. The scanning gantry according to claim 1, wherein tank chains are disposed on the first linear motion mechanism (95) and the second linear motion mechanism (94).

7. The gantry of claim 1, wherein the motion controller is a three axis motion controller.

8. The gantry of any of claims 1-7, wherein the first linear motion mechanism (95) comprises a first slide rail and a first slider sliding along the first slide rail, the second linear motion mechanism (94) comprises a second slide rail and a second slider sliding along the second slide rail, the third linear motion mechanism (91) comprises a third slide rail and a third slider sliding along the third slide rail, the second slide rail is disposed on the first slider and perpendicular to the first slide rail, the third slide rail is disposed on the second slider and perpendicular to the first slide rail and the second slide rail, the probe (10) is disposed on the third slider, and the motion controller is electrically connected to the driving modules disposed on the first slider, the second slider and the third slider.

9. A camera bellows, comprising a camera bellows body, wherein the scanner gantry according to any one of claims 1 to 8 is provided in the camera bellows body.

10. A camera chamber as claimed in claim 9, characterized in that the camera chamber body comprises a probe chamber (2) and a supporting chamber (1) for the products to be measured, the probe chamber (2) and the supporting chamber (1) for the products to be measured being detachably connected or connected by means of a shielding chamber, the scanning carriage being arranged in the probe chamber (2).