CN112462175A - Radio frequency multichannel switching device - Google Patents
Radio frequency multichannel switching device Download PDFInfo
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- CN112462175A CN112462175A CN202011261487.0A CN202011261487A CN112462175A CN 112462175 A CN112462175 A CN 112462175A CN 202011261487 A CN202011261487 A CN 202011261487A CN 112462175 A CN112462175 A CN 112462175A
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- 230000009977 dual effect Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 6
- 238000010923 batch production Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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Abstract
The invention discloses a radio frequency multichannel switching device, belonging to the technical field of electronic test equipment, comprising: a plurality of A coaxial connector adapters arranged in parallel along the X-axis direction; the B coaxial connector adapter is matched with the A coaxial connector adapter, and is provided with an execution part for driving the B coaxial connector adapter to move along the X-axis direction and the Y-axis direction; the A coaxial connector adapter is communicated with the B coaxial connector adapter to serve as a switch channel, and under the driving action of the execution part, the B coaxial connector adapter is sequentially and repeatedly inserted into each A coaxial connector adapter changeover switch channel and measures the amplitude-phase consistency of the switch, so that the aim of accurately measuring the amplitude-phase consistency in multi-channel automatic test in the batch production process is fulfilled.
Description
Technical Field
The invention belongs to the technical field of electronic test equipment, and particularly relates to a radio frequency multichannel switching device.
Background
With the development of the array of radio frequency products, the automatic testing of multi-channel indexes has gradually become a basic requirement for mass production. The traditional solution is to use a radio frequency switch to solve the channel switching problem, and common radio frequency switches include two major types, namely a mechanical switch and a solid-state switch. For channel switching of a high frequency band, a solid-state switch is not generally used for building and using a test system due to large insertion loss, and a mechanical switch commonly used in the industry is a single-pole six-throw radio frequency coaxial switch.
Because the number of channels of a product is often dozens of channels or even hundreds of channels, a switch matrix needs to be formed in a radio frequency switch cascade mode to build a system, and the radio frequency switch matrix often causes the following problems:
(1) the manufacturing cost is high, and the large-scale replication difficulty of the production field is large;
(2) after the cascade connection of the multi-stage switch, the consistency among channels caused by different test cables becomes poor, accumulated errors caused by temperature drift and mechanical deformation are extremely difficult to correct, a test system usually needs to be repeatedly calibrated, and partial indexes such as phase consistency cannot be met, and still need to be tested independently.
For the measurement accuracy (such as phase consistency) which needs to be tested separately, the measurement requirement of amplitude-phase consistency cannot be met.
Disclosure of Invention
In view of the above, in order to solve the above problems in the prior art, an object of the present invention is to provide a radio frequency multi-channel switching device, so as to achieve the purpose of accurately measuring the amplitude-phase consistency in a multi-channel automatic test in a batch production process.
The technical scheme adopted by the invention is as follows: a radio frequency multi-channel switching apparatus, the apparatus comprising:
a plurality of A coaxial connector adapters arranged in parallel along the X-axis direction;
the B coaxial connector adapter is matched with the A coaxial connector adapter, and is provided with an execution part for driving the B coaxial connector adapter to move along the X-axis direction and the Y-axis direction;
the A coaxial connector adapter is communicated with the B coaxial connector adapter to serve as a switch channel, and under the driving action of the execution part, the B coaxial connector adapter is sequentially and repeatedly inserted into each A coaxial connector adapter changeover switch channel and measures the amplitude-phase consistency of the switch.
Further, the apparatus further comprises:
a panel on which each of the A coaxial connector adapters is mounted;
the base is connected with the panel in an installing mode, and the panel is adjustable in the Z-axis direction relative to the bottom plate.
Further, at least two strip-shaped holes are formed in the base along the Z-axis direction, and each strip-shaped hole is provided with a locking screw and locks the panel on the base through each locking screw.
Further, the B-coaxial connector adapter is mounted to the actuator by a duplex protective structure.
Further, the multiple protective structure includes:
the first mounting plate is connected with the execution part in a mounting way;
connect the second mounting panel on first mounting panel through a plurality of screws, install B coaxial connector converter and second mounting panel and first mounting panel parallel on the second mounting panel, and the second mounting panel is adjustable in the Z axle direction for first mounting panel.
Furthermore, a wire passing notch is formed in the first mounting plate, and the wire passing notch and the B coaxial connector adapter are located on the same axis.
Further, the execution section includes:
the switch module is provided with a pneumatic valve, and the pneumatic valve drives the B coaxial connector adapter to move along the Y-axis direction;
the servo motor drives the switch module to move along the X-axis direction through the screw-nut pair;
further, the apparatus further comprises:
the position sensor is arranged on the switch module and connected with a first power supply;
the control circuit is electrically connected with the pneumatic valve and is connected with a second power supply;
and the control calculator is respectively connected with the position sensor and the control circuit, and is connected with the servo motor through the servo driver.
Furthermore, the control calculator is respectively connected with the position sensor and the control circuit through a digital IO port, and the control calculator is connected with the servo driver through RS 485.
Further, the first power supply is a 5V power supply, and the 5V power supply is connected to the position sensor through a load circuit; the second power supply is a 24V power supply.
The invention has the beneficial effects that:
1. by adopting the radio frequency multi-channel switching device provided by the invention, the B coaxial connector adapter can be sequentially and repeatedly plugged into each A coaxial connector adapter switching switch channel under the driving action of the execution part, and the switch channels are directly connected by the radio frequency coaxial connector adapters, so that the uncertainty of a cable caused by mechanical switch cascade is avoided, the amplitude-phase consistency is only determined by the consistency of connectors of the same type, the performance index test of radio frequency products of any channel can be realized, the cost is saved compared with the traditional mode, the random error in the amplitude-phase consistency test process is reduced, and the test accuracy can be ensured.
Drawings
Fig. 1 is a schematic diagram of an overall structure of a radio frequency multi-channel switching device provided by the present invention;
FIG. 2 is a schematic view of the assembly between the panel and the base in the RF multichannel switching device provided by the present invention;
FIG. 3 is a schematic structural diagram of a multiple protection structure in the RF multi-channel switch device provided by the present invention;
FIG. 4 is a structural diagram of an electric control system of the RF multi-channel switching device provided by the present invention;
FIG. 5 shows the result of an amplitude consistency aging test of the RF multi-channel switch device provided by the present invention;
FIG. 6 shows the phase consistency aging test results of the RF multi-channel switch device of the present invention;
the drawings are labeled as follows:
the device comprises a screw nut pair 1, a base plate 2, a pneumatic valve 3, a switch module 4, a coaxial connector adapter 5-B, a panel 6-a coaxial connector adapter 7-A, a double protection structure member 8-a base 9-a second mounting plate 10-a first mounting plate 11-a line gap 12-a screw rod 14-a strip-shaped hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
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, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the indication of the orientation or the positional relationship is based on the orientation or the positional relationship shown in the drawings, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, or the orientation or the positional relationship which is usually understood by those skilled in the art, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, cannot be understood as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be further noted that the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases by those skilled in the art; the drawings in the embodiments are used for clearly and completely describing the technical scheme in the embodiments of the invention, and obviously, the described embodiments are a part of the embodiments of the invention, but not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example 1
The embodiment specifically provides a radio frequency multichannel switching device, which is applied to the batch production test of multichannel radio frequency products, and solves the automatic test problem of radio frequency index consistency with lower cost, and the device comprises: the electric control system comprises an execution part, an electric control part and a working frame, wherein a bottom plate 2 is arranged on the working frame and is used as a working table, and the execution part is arranged on the bottom plate 2; and the lower part of the bottom plate 2 is provided with an electric control part, and the control action and the data measurement of the whole automatic test are completed under the combined action of the execution part and the electric control part.
The specific design is as follows:
(ii) an execution part
As shown in fig. 1 and 2, a base 9 is provided on the base plate 2, a panel 6 is attached to the base 9, and the panel 6 is adjustable in the Z-axis direction with respect to the base plate 2. In order to realize that the panel 6 is adjustable in the Z-axis direction, in practical application, three strip-shaped holes 14 are formed in the base 9 along the Z-axis direction, the hole length direction of each strip-shaped hole 14 is located in the Z-axis direction, each strip-shaped hole 14 is provided with a locking screw, each locking screw can freely move in the corresponding strip-shaped hole 14 along the Z-axis direction and can move to a proper position, and then the panel 6 is locked on the base 9 by being screwed up through each locking screw. Since the panel 6 can be adjusted in height up and down according to different installation environments, flexibility in application of the device can be ensured. In addition, corresponding to different products, only the panel 6 at the upper part needs to be replaced, and the base 9 can be reused, so that the cost is saved.
Meanwhile, a plurality of A coaxial connector adapters 7 are installed on the panel 6, and each A coaxial connector adapter 7 is arranged in parallel along the X-axis direction, and in order to ensure smooth switching of multiple channels in the testing process, each A coaxial connector adapter 7 is arranged on the panel 6 at equal intervals, so that installation and arrangement of each A coaxial connector adapter 7 can be realized.
A switch module 4 is arranged on one side parallel to the surface of the base 9, and the switch module 4 can be driven to move along the X-axis direction by the screw-nut pair 1 under the action of the servo motor; meanwhile, the switch module 4 is provided with a pneumatic valve 3.
The end part of the piston rod of the pneumatic valve 3 is provided with a push plate, a compound protection structural part 8 is arranged and connected on the push plate, and the B coaxial connector adapter 5 is arranged on the push plate of the pneumatic valve 3 under the action of the compound protection structural part 8 so as to realize that the pneumatic valve 3 can drive the B coaxial connector adapter 5 to move along the Y-axis direction when the pneumatic valve 3 moves.
In practical use, as shown in fig. 3, in order to prolong the service life of the cable, the dual protection structure member 8 is designed as follows:
the pneumatic valve comprises a first mounting plate 11 and a second mounting plate 10, wherein the first mounting plate 11 is connected with a pushing plate of the pneumatic valve 3 in a mounting way; the second mounting plate 10 is connected to the first mounting plate 11 by a plurality of screws 13, and the second mounting plate 10 should be maintained in a state of being parallel to the first mounting plate 11, and the second mounting plate 10 is adjustable in the Z-axis direction with respect to the first mounting plate 11. In practical application, four corners of the first mounting plate 11 are respectively connected with a screw 13, the other end of each screw 13 is connected to four corners of the second mounting plate 10, and meanwhile, in order to realize that the second mounting plate 10 is adjustable in the Z-axis direction relative to the first mounting plate 11, in this embodiment, four strip-shaped holes 14 are selectively opened at four corners of the second mounting plate 10, each screw 13 can move in the corresponding strip-shaped hole 14 along the Z-axis direction, so as to achieve the displacement movement of the second mounting plate 10 in the Z-axis direction, so as to cooperate with the above-mentioned adjustment movement of the panel 6 in the Z-axis direction, so as to ensure that the B coaxial connector adaptor 5 can be butted onto the corresponding a coaxial connector adaptor 7 under the pushing of the pneumatic valve 3. Due to the double-layer fixing structure formed by the first mounting plate 11 and the second mounting plate 10, different radio frequency coaxial connector adapters can be adapted by replacing the mounting plates of single plates, so that various products are covered, and the flexibility of a switch structure is ensured.
The first mounting plate 11 is provided with a wire passing notch 12, the wire passing notch 12 and the B coaxial connector adapter 5 are positioned on the same axis, after the cable is communicated with the B coaxial connector adapter 5, the cable is led out through the wire passing notch 12, so that the direction of the cable is perpendicular to the moving direction of the B coaxial connector adapter 5, the cable is uniformly stressed, and meanwhile, when the servo motor drives the radio frequency cable to move horizontally, the part of the cable connected with the B coaxial connector adapter 5 is prevented from being broken and damaged along with the increase of the moving times.
The A coaxial connector adapter 7 is matched with the B coaxial connector adapter 5, and the B coaxial connector adapter 5 can move along the X-axis direction and the Y-axis direction under the driving of the servo motor and the pneumatic valve 3; in the test of the batch production of the multi-channel radio frequency products, the A coaxial connector adapter 7 is communicated with the B coaxial connector adapter 5 to be used as a switch channel, and under the driving action of the servo motor and the pneumatic valve 3, the B coaxial connector adapter 5 is sequentially and repeatedly inserted into each A coaxial connector adapter 7 to switch the switch channel and measure the amplitude-phase consistency of the switch.
② electric control part
As shown in fig. 4, under the action of the electric control part, the motion of the execution part can be effectively controlled, and the electric control part comprises: a position sensor, a control circuit and a control calculator.
Locate switch module 4 with position sensor on, position sensor is connected with first power supply, and first power supply is the 5V power, and the 5V power is connected to position sensor through load circuit.
And the control circuit is electrically connected with an electromagnetic valve of the pneumatic valve 3 to control the working action of the pneumatic valve 3, and the control circuit is connected with a second power supply which is a 24V power supply.
The control calculator is connected with the position sensor and the control circuit respectively, is connected with the servo motor through the servo driver, is connected with the position sensor and the control circuit through the digital IO port respectively, and is connected with the servo driver through the RS 485.
In practical application, the servo computer is controlled by an ASDA-a2 servo controller in the dada technology. From the applied scene analysis of switch, it is first-selected to constitute simply, the fast stable control system of response speed, this system chooses for use the motor shaft that has the absolute value encoder to detect half closed loop control system, the theoretical precision of absolute value encoder is 0.001mm (through encoder feedback servo motor's revolution promptly, the revolution just can accurately match switch module 4 displacement distance in X axle direction through the formula calculation, and then realize that servo motor drive switch module 4 can accurately match the position at each A coaxial connector adapter 7 place in the ascending displacement of axle direction, under the condition that satisfies system's required precision completely, need not introduce additional position sensor in X axle direction, be convenient for the control and the maintenance of system.
The control process is as follows:
the control computer is connected with the servo driver through RS485, the servo driver controls the servo motor to move, and the servo motor drives the switch module 4 to move and switch the position in the X-axis direction under the action of the screw-nut pair 1;
the control computer switches a control circuit of a 24V power supply through a digital IO port, and the control circuit controls the pneumatic valve 3 to act so as to move the switch module 4 in the Y-axis direction;
because the switch module 4 is provided with the position sensor, the position of the switch module 4 in the X-axis direction is detected through the position sensor by a load circuit driven by a 5V power supply, when the switch module 4 moves to the limit positions at two ends of the X-axis direction, the position state is reported to the control computer through digital IO, and the control computer can control the steering switching of the servo motor through the servo controller, so that the movement switching direction of the switch module 4 is switched in a reciprocating way.
By taking the radio frequency channel selected from 18 as an example, the engineering cost of the traditional radio frequency switch matrix is about 10 ten thousand yuan, while the engineering cost of the radio frequency multichannel switching device is only 5000 yuan, so that the radio frequency multichannel switching device has obvious price advantage and is suitable for popularization and use of production lines.
In the aspect of amplitude-phase consistency test, as the switch channels are directly connected by the radio frequency coaxial connector adapters, the uncertainty of cables caused by mechanical switch cascade is avoided, and therefore, the amplitude-phase consistency is only determined by the consistency of the radio frequency coaxial connector adapters of the same model.
Take the amplitude/phase measurement of a certain channel of the network analyzer connecting switch as an example. By adopting the radio frequency multi-channel switching device, channels are sequentially switched along the X-axis direction and a test cycle is carried out until the channels return to the same channel, a plurality of test cycles are repeatedly measured, the aging test is continued, the amplitude consistency of the switch is measured after 2 hours, the measurement result is shown in figures 5 and 6, the amplitude consistency is less than +/-0.5 dB and the phase consistency is less than +/-10 degrees, and the requirement of consistency error in the automatic test process is completely met.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (10)
1. A radio frequency multi-channel switching apparatus, the apparatus comprising:
a plurality of A coaxial connector adapters arranged in parallel along the X-axis direction;
the B coaxial connector adapter is matched with the A coaxial connector adapter, and is provided with an execution part for driving the B coaxial connector adapter to move along the X-axis direction and the Y-axis direction;
the A coaxial connector adapter is communicated with the B coaxial connector adapter to serve as a switch channel, and under the driving action of the execution part, the B coaxial connector adapter is sequentially and repeatedly inserted into each A coaxial connector adapter changeover switch channel and measures the amplitude-phase consistency of the switch.
2. A radio frequency multichannel switching device according to claim 1, characterized in that the device further comprises:
a panel on which each of the A coaxial connector adapters is mounted;
the base is connected with the panel in an installing mode, and the panel is adjustable in the Z-axis direction relative to the bottom plate.
3. The radio frequency multichannel switching device according to claim 2, wherein the base has at least two bar-shaped holes along the Z-axis direction, each bar-shaped hole is provided with a locking screw, and the panel is locked to the base by the locking screws.
4. The radio frequency multichannel switching device of claim 1, wherein the B-coax connector adapter is mounted to the actuator by a duplex protective structure.
5. The radio frequency multi-channel switching device of claim 4, wherein the dual protection structure comprises:
the first mounting plate is connected with the execution part in a mounting way;
connect the second mounting panel on first mounting panel through a plurality of screws, install B coaxial connector converter and second mounting panel and first mounting panel parallel on the second mounting panel, and the second mounting panel is adjustable in the Z axle direction for first mounting panel.
6. The radio frequency multichannel switching device according to claim 5, wherein the first mounting plate has a wire passing notch formed therein, and the wire passing notch and the B coaxial connector adapter are located on the same axis.
7. The radio frequency multi-channel switching device according to claim 1, wherein the executing section includes:
the switch module is provided with a pneumatic valve, and the pneumatic valve drives the B coaxial connector adapter to move along the Y-axis direction;
and the servo motor drives the switch module to move along the X-axis direction through the screw-nut pair.
8. A radio frequency multi-channel switching device according to claim 7, characterized in that the device further comprises:
the position sensor is arranged on the switch module and connected with a first power supply;
the control circuit is electrically connected with the pneumatic valve and is connected with a second power supply;
and the control calculator is respectively connected with the position sensor and the control circuit, and is connected with the servo motor through the servo driver.
9. The radio frequency multi-channel switching device according to claim 8, wherein the control calculator is connected to the position sensor and the control circuit through digital IO ports, and the control calculator is connected to the servo driver through RS 485.
10. The radio frequency multichannel switching device according to claim 8, wherein the first power supply is a 5V power supply, and the 5V power supply is connected to the position sensor through a load circuit; the second power supply is a 24V power supply.
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| CN202011261487.0A CN112462175A (en) | 2020-11-12 | 2020-11-12 | Radio frequency multichannel switching device |
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| CN202011261487.0A CN112462175A (en) | 2020-11-12 | 2020-11-12 | Radio frequency multichannel switching device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113681593A (en) * | 2021-09-06 | 2021-11-23 | 中电科思仪科技股份有限公司 | Microwave test channel automatic switching device based on truss manipulator and implementation method |
| CN113904736A (en) * | 2021-09-18 | 2022-01-07 | 中国电子科技集团公司第二十九研究所 | Multichannel radio frequency signal routing device |
| CN113904736B (en) * | 2021-09-18 | 2023-05-23 | 中国电子科技集团公司第二十九研究所 | Multichannel radio frequency signal routing device |
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Application publication date: 20210309 |