CN112511247A - Time-frequency domain comprehensive automobile measuring instrument - Google Patents
Time-frequency domain comprehensive automobile measuring instrument Download PDFInfo
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- CN112511247A CN112511247A CN202010040784.6A CN202010040784A CN112511247A CN 112511247 A CN112511247 A CN 112511247A CN 202010040784 A CN202010040784 A CN 202010040784A CN 112511247 A CN112511247 A CN 112511247A
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- 238000005070 sampling Methods 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims description 46
- 230000002457 bidirectional effect Effects 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 8
- 230000009467 reduction Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 5
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- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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Abstract
The invention discloses a time-frequency domain comprehensive automobile measuring instrument in the technical field of time-frequency domain comprehensive automobile measuring instruments, wherein a screw rod is fixedly assembled at the output end of a motor, a sliding seat which is assembled on the outer wall of the screw rod in a threaded manner is assembled at the bottom of an inner cavity of a protection box in a sliding manner, a measuring antenna group is fixedly installed on the left side wall of an installation plate, near measuring probe groups corresponding to a measured object are fixedly arranged on the front side wall and the rear side wall of the inner cavity of a measuring chamber, a central processing controller is fixedly arranged at the top of the left side wall of the measuring chamber, a probe control device is fixedly arranged at the bottom of the central processing controller, a comprehensive tester is fixedly arranged at the bottom of the probe control device, a digital sampling oscilloscope is fixedly arranged at the bottom of the comprehensive tester, the requirements of different working frequency bands on measuring distance and space loss can be dynamically adapted, to ensure that the test is performed successfully and to provide a reliable test.
Description
Technical Field
The invention relates to the technical field of time-frequency domain comprehensive automobile measuring instruments, in particular to a time-frequency domain comprehensive automobile measuring instrument.
Background
An autonomous car with minimal human-computer interaction will soon become a reality on our roads. It is determined that autonomous vehicles have many potential advantages, and wireless mobile communication terminals are widely used in the field of vehicles at present, the OTA performance of the used communication terminal is very important for users, terminal manufacturers require strict test control in the terminal production link to ensure that each device has good OTA performance when leaving the factory, OTA testing is required in the communication terminal production process, a common method is to use a simple coupling plate or a single probe for testing, the testing method has simple sampling, often cannot fully reflect the OTA real performance of the communication terminal, mistesting is possible, meanwhile, the position of a measuring antenna in the existing OTA measuring chamber is relatively fixed, once the OTA measuring chamber is built, the distance between a measuring turntable for placing the terminal to be tested and the measuring antenna of the measuring chamber is fixed, and the efficiency and the stability of the measuring system are reduced, therefore, the time-frequency domain comprehensive automobile measuring instrument is provided.
Disclosure of Invention
The invention aims to provide a time-frequency domain comprehensive automobile measuring instrument to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the time-frequency domain comprehensive automobile measuring instrument comprises a measuring chamber, wherein a shielding layer is fixedly bonded and assembled on the inner wall of the measuring chamber, a measuring platform is fixedly arranged on the left side of the bottom of the measuring chamber, a measured object is arranged at the top of the measuring platform, an OTA pulse source is fixedly assembled in the measured object, a bottom plate is fixedly arranged on the right side of the bottom of an inner cavity of the measuring chamber, a protection box is fixedly arranged at the top of the bottom plate, a bearing seat is fixedly assembled on the left side of the protection box, a motor is fixedly arranged on the right side of the inner cavity of the protection box, a lead screw is fixedly assembled at the output end of the motor, a sliding seat which is assembled on the outer wall of the lead screw in a threaded manner is slidably assembled at the bottom of the inner cavity of the protection box, a fixing plate is fixedly assembled after the, the device comprises a measuring chamber, and is characterized in that near-detection probe groups corresponding to a measured object are fixedly arranged on the front and rear side walls of an inner cavity of the measuring chamber, a central processing controller is fixedly arranged at the top of the left side wall of the measuring chamber, a probe control device is fixedly arranged at the bottom of the central processing controller, a comprehensive tester is fixedly arranged at the bottom of the probe control device, and a digital sampling oscilloscope is fixedly arranged at the bottom of the comprehensive tester.
Preferably, the OTA pulse source is electrically connected to the proximity probe group in a bidirectional manner, the proximity probe group is electrically connected to the probe control device in a bidirectional manner, the probe control device is electrically connected to the computer software carrier in a bidirectional manner, the computer software carrier is electrically connected to the central processing controller in a bidirectional manner, the computer software carrier is electrically connected to the comprehensive tester in a bidirectional manner, the comprehensive tester is electrically connected to the probe control device in a bidirectional manner, the measuring antenna group is electrically output to the comprehensive tester, the central processing controller is electrically input to the hall sensor, and the central processing controller is electrically output to the motor and the digital sampling oscilloscope respectively.
Preferably, the Hall sensor is fixedly assembled on the outer wall of the output end of the motor, and the left end of the lead screw is movably assembled with the bearing seat through a bearing.
Preferably, the top of the protection box is provided with a guide channel matched with the sliding seat, the bottom of the inner cavity of the protection box is provided with a transverse guide sliding groove, and the bottom of the sliding seat is fixedly provided with a sliding block matched with the guide sliding groove.
Preferably, the measurement antenna group corresponds to a near detection probe group, and the near detection probe group is adapted to the OTA pulse source.
Preferably, a storage battery is fixedly arranged at the bottom of the rear side wall of the measuring chamber, the measuring platform is a rotating platform, a driving motor is fixedly arranged at the bottom of the measuring platform, a reduction gearbox is assembled at the output end of the driving motor, and the output end of the reduction gearbox and the center of the bottom of the measuring platform are fixedly assembled.
Compared with the prior art, the invention has the beneficial effects that:
1. the structure of the invention is reasonable in design, the emission of radio frequency signals is carried out through the OTA pulse source, the near field detection of the radio frequency signals can be realized through the signal interaction of the near detection probe group and the OTA pulse source, the detection data is transmitted to the probe control device, the probe control device can control the near detection probe group under the control of a computer software carrier, the near detection probes on the near detection probe group can be conveniently opened and closed according to a certain sequence, thus the detection can be realized through the near detection probes in different directions when the measurement platform rotates to drive the measured object to rotate, the radiation performance of the measured object in different directions can be detected, the detection accuracy is high, and meanwhile, the detection result can be transmitted to the comprehensive tester for data analysis;
2. the measuring antenna group on the mounting plate can receive radio frequency signals sent by an OTA pulse source to complete far-field radiation detection, so that synchronous detection on near-far-field radiation performance of a detected object can be completed, the detection efficiency is high, the measuring antenna group transmits detection results to the comprehensive tester for data operation analysis, analysis results are transmitted to the central processing controller through a computer software carrier for data conversion processing, and finally, the detection results are collected and displayed through the digital sampling oscilloscope, so that real-time sampling detection can be realized through the near-detection probe group and the measuring antenna group, and the synchronism and accuracy of data sampling are ensured;
3. after a group of data is detected, the central processing controller controls the motor to rotate, so that when the motor drives the screw rod to rotate, the screw connection action of the screw rod and the sliding seat drives the sliding seat to move, thereby driving the measuring antenna group on the mounting plate to move horizontally, simultaneously the Hall sensor can detect the number of turns of the motor, the horizontal position of the measuring antenna group is convenient to be accurately controlled, therefore, by adjusting several groups of different horizontal positions of the measuring antenna group, the far-field radiation performance parameters of several groups of OTA pulse sources can be measured more, the accuracy of radio frequency signal detection can be improved, the comprehensiveness of the detection can be improved, therefore, the requirements of different working frequency bands on the measurement distance and the space loss can be dynamically adapted, and the most suitable measurement distance is provided for each working frequency band and communication system, so that the test is ensured to be carried out smoothly and reliable test is provided.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a working principle diagram of the present invention.
In the figure: the device comprises a measuring room 1, a shielding layer 2, a measuring platform 3, a measured object 4, an OTA pulse source 5, a bottom plate 6, a protective box 7, a bearing seat 8, a motor 9, a lead screw 10, a sliding seat 11, a fixed plate 12, a mounting plate 13, a measuring antenna group 14, a proximity probe group 15, a central processing controller 16, a probe control device 17, a comprehensive tester 18, a digital sampling oscilloscope 19, a Hall sensor 20 and a computer software carrier 21.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1 and fig. 2, the present invention provides a technical solution: the time-frequency domain comprehensive automobile measuring instrument comprises a measuring chamber 1, a shielding layer 2 is fixedly bonded and assembled on the inner wall of the measuring chamber 1, a measuring platform 3 is fixedly arranged on the left side of the bottom of the measuring chamber 1, a measured object 4 is arranged on the top of the measuring platform 3, an OTA pulse source 5 is fixedly assembled in the measured object 4, a bottom plate 6 is fixedly arranged on the right side of the bottom of an inner cavity of the measuring chamber 1, a protection box 7 is fixedly arranged on the top of the bottom plate 6, a bearing seat 8 is fixedly assembled on the left side of the protection box 7, a motor 9 is fixedly arranged on the right side of the inner cavity of the protection box 7, a lead screw 10 is fixedly assembled at the output end of the motor 9, a sliding seat 11 which is assembled on the outer wall of the lead screw 10 in a threaded manner is slidably assembled at the bottom of the inner cavity of the protection box 7, a fixing plate, the front side wall and the rear side wall of the inner cavity of the measuring chamber 1 are fixedly provided with near-detection probe groups 15 corresponding to the measured object 4, the top of the left side wall of the measuring chamber 1 is fixedly provided with a central processing controller 16, the bottom of the central processing controller 16 is fixedly provided with a probe control device 17, the bottom of the probe control device 17 is fixedly provided with a comprehensive tester 18, the bottom of the comprehensive tester 18 is fixedly provided with a digital sampling oscilloscope 19, the front side wall of the measuring chamber 1 is movably hinged with a door body, and the assembly part of the door body and the measuring chamber 1 is provided with a sealing rubber ring in a nested manner.
Referring to fig. 2, the OTA pulse source 5 is electrically connected to the proximity probe set 15 in a bidirectional manner, the proximity probe set 15 is electrically connected to the probe control device 17 in a bidirectional manner, the probe control device 17 is electrically connected to the computer software carrier 21 in a bidirectional manner, the computer software carrier 21 is electrically connected to the central processing controller 16 in a bidirectional manner, the computer software carrier 21 is electrically connected to the comprehensive tester 18 in a bidirectional manner, the comprehensive tester 18 is electrically connected to the probe control device 17 in a bidirectional manner, the measuring antenna set 14 is electrically connected to the comprehensive tester 18 in an output manner, the central processing controller 16 is electrically connected to the hall sensor 20 in an input manner, and the central processing controller 16 is electrically connected to the motor 9 and the digital sampling oscilloscope 19 in an output;
the Hall sensor 20 is fixedly assembled on the outer wall of the output end of the motor 9, the left end of the lead screw 10 is movably assembled with the bearing seat 8 through a bearing, and the Hall sensor 20 can detect the number of rotation turns of the motor 9, so that the horizontal position of the antenna group 14 can be accurately controlled and measured;
the top of the protection box 7 is provided with a guide channel matched with the sliding seat 11, the bottom of the inner cavity of the protection box 7 is provided with a transverse guide sliding chute, and the bottom of the sliding seat 11 is fixedly provided with a sliding block matched with the guide sliding chute;
the measurement antenna group 14 corresponds to the near detection probe group 15, and the near detection probe group 15 is matched with the OTA pulse source 5;
the fixed battery that is provided with in back lateral wall bottom of measuring chamber 1, and measuring platform 3 is rotary platform, and measuring platform 3's bottom fixed mounting has driving motor, and driving motor's output is equipped with the reducing gear box, and the output of reducing gear box and measuring platform 3's bottom center department fixed mounting.
The working principle is as follows:
s1: connecting each device by lapping wires, completing debugging work, ensuring that the operation work of the device is normal, then stopping the measured object 4 on the measuring platform 3, completing the installation of the OTA pulse source 5, and closing a door body, thus starting the measuring work;
s2: the OTA pulse source 5 is electrically connected with the computer software carrier 21 through the network connector, so that radio-frequency signals are transmitted through the OTA pulse source 5, near-field detection of the radio-frequency signals can be realized through signal interaction of the near-detection probe group 15 and the OTA pulse source 5, detection data are transmitted to the probe control device 17, the probe control device 17 can control the near-detection probe group 15 under the control of the computer software carrier 21, the near-detection probes on the near-detection probe group 15 can be conveniently opened and closed according to a certain sequence, so that when the measuring platform 3 rotates to drive the measured object 4 to rotate, the detection can be realized through the near-detection probes in different directions, the radiation performance of the measured object 4 in different directions can be detected, the detection accuracy is high, and meanwhile, the detection result can be transmitted to the comprehensive tester 18 for data analysis;
s3: meanwhile, the measuring antenna group 14 on the mounting plate 13 can receive the radio frequency signal sent by the OTA pulse source 5 to complete far field radiation detection, so that synchronous detection on near and far field radiation performance of the detected object 4 can be completed, the detection efficiency is high, the measuring antenna group 14 transmits the detection result to the comprehensive tester 18 for data operation analysis, the analysis result is transmitted to the central processing controller 16 through the computer software carrier 21 for data conversion processing, and finally, the digital sampling oscilloscope 19 is used for collecting and displaying the detection result, so that real-time sampling detection can be realized through the near detection probe group 15 and the measuring antenna group 14, and the synchronism and the accuracy of data sampling are ensured;
s4: after a group of data is detected, the central processing controller 16 controls the motor 9 to rotate, so that when the motor 9 drives the screw rod 10 to rotate, the screw connection action of the screw rod 10 and the sliding seat 11 drives the sliding seat 11 to move, thereby driving the measuring antenna group 14 on the mounting plate 13 to move horizontally, and simultaneously the hall sensor 20 can detect the number of turns of the motor 9, which is convenient for accurately controlling the horizontal position of the measuring antenna group 14, therefore, by adjusting several groups of different horizontal positions of the measuring antenna group 14, several groups of far-field radiation performance parameters of the OTA pulse source 5 can be measured, the accuracy of radio frequency signal detection can be improved, the comprehensiveness of the detection can be improved, therefore, the requirements of different working frequency bands on the measurement distance and the space loss can be dynamically adapted, and the most suitable measurement distance is provided for each working frequency band and communication system, so that the smooth test is ensured, and the most stable and reliable test is provided.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. Time-frequency domain synthesizes automobile measuring apparatu, including measuring room (1), its characterized in that: the device is characterized in that a shielding layer (2) is fixedly adhered to the inner wall of the measuring chamber (1), a measuring platform (3) is fixedly arranged on the left side of the bottom of the measuring chamber (1), a measured object (4) is arranged at the top of the measuring platform (3), an OTA pulse source (5) is fixedly arranged in the measured object (4), a bottom plate (6) is fixedly arranged on the right side of the bottom of the inner cavity of the measuring chamber (1), a protection box (7) is fixedly arranged at the top of the bottom plate (6), a bearing seat (8) is fixedly arranged on the left side of the protection box (7), a motor (9) is fixedly arranged on the right side of the inner cavity of the protection box (7), a lead screw (10) is fixedly arranged at the output end of the motor (9), a sliding seat (11) which is assembled on the outer wall of the lead screw (10) in a threaded manner is slidably assembled at the bottom of the inner cavity of the protection box (, the fixed mounting panel (13) that is provided with in top of fixed plate (12), fixed mounting has measurement antenna group (14) on the left side wall of mounting panel (13), all fixed being provided with on the lateral wall around the inner chamber of measuring chamber (1) with the corresponding nearly survey probe group (15) of testee (4), the fixed central processing controller (16) that is provided with in left side wall top of measuring chamber (1), the fixed probe controlling means (17) that is provided with in bottom of central processing controller (16), fixed comprehensive tester (18) that is provided with in probe controlling means (17) bottom, fixed digital sampling oscilloscope (19) that is provided with in comprehensive tester (18) bottom.
2. The time-frequency domain integrated vehicle measuring instrument according to claim 1, wherein: the OTA pulse source (5) is in bidirectional electrical connection with a proximity probe set (15), the proximity probe set (15) is in bidirectional electrical connection with a probe control device (17), the probe control device (17) is in bidirectional electrical connection with a computer software carrier (21), the computer software carrier (21) is in bidirectional electrical connection with a central processing controller (16), the computer software carrier (21) is in bidirectional electrical connection with a comprehensive tester (18), the comprehensive tester (18) is in bidirectional electrical connection with the probe control device (17), the measuring antenna set (14) is in electrical output connection with the comprehensive tester (18), the central processing controller (16) is in electrical input connection with a Hall sensor (20), and the central processing controller (16) is in electrical output connection with a motor (9) and a digital sampling oscilloscope (19) respectively.
3. The time-frequency domain integrated vehicle measuring instrument according to claim 2, wherein: the Hall sensor (20) is fixedly assembled on the outer wall of the output end of the motor (9), and the left end of the lead screw (10) is movably assembled with the bearing seat (8) through a bearing.
4. The time-frequency domain integrated vehicle measuring instrument according to claim 1, wherein: the top of the protection box (7) is provided with a guide channel matched with the sliding seat (11), the bottom of the inner cavity of the protection box (7) is provided with a transverse guide sliding groove, and the bottom of the sliding seat (11) is fixedly provided with a sliding block matched with the guide sliding groove.
5. The time-frequency domain integrated vehicle measuring instrument according to claim 1, wherein: the measuring antenna group (14) corresponds to the near detection probe group (15), and the near detection probe group (15) is matched with the OTA pulse source (5).
6. The time-frequency domain integrated vehicle measuring instrument according to claim 1, wherein: the bottom of the rear side wall of the measuring chamber (1) is fixedly provided with a storage battery, the measuring platform (3) is a rotating platform, the bottom of the measuring platform (3) is fixedly provided with a driving motor, the output end of the driving motor is provided with a reduction gearbox, and the output end of the reduction gearbox and the bottom center of the measuring platform (3) are fixedly assembled.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010040784.6A CN112511247A (en) | 2020-01-15 | 2020-01-15 | Time-frequency domain comprehensive automobile measuring instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010040784.6A CN112511247A (en) | 2020-01-15 | 2020-01-15 | Time-frequency domain comprehensive automobile measuring instrument |
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| CN112511247A true CN112511247A (en) | 2021-03-16 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013185694A1 (en) * | 2012-07-27 | 2013-12-19 | 中兴通讯股份有限公司 | Method and device for testing radio frequency index and wireless index of active antenna system |
| CN105974342A (en) * | 2016-07-06 | 2016-09-28 | 苏州富强科技有限公司 | Magnetic flux density measuring apparatus and measuring method thereof |
| CN107167308A (en) * | 2017-06-12 | 2017-09-15 | 清华大学 | A kind of adjustable electric strut test stand system and its method of testing |
| US10177862B2 (en) * | 2017-05-22 | 2019-01-08 | Keysight Technologies, Inc. | System and method for performing over-the-air tests for massive multi-input/multi-output wireless system |
| CN109301484A (en) * | 2018-10-24 | 2019-02-01 | 郑州辛西亚信息科技有限公司 | A kind of rotary type antenna |
-
2020
- 2020-01-15 CN CN202010040784.6A patent/CN112511247A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013185694A1 (en) * | 2012-07-27 | 2013-12-19 | 中兴通讯股份有限公司 | Method and device for testing radio frequency index and wireless index of active antenna system |
| US20150188647A1 (en) * | 2012-07-27 | 2015-07-02 | Zte Corporation | Method and Device for Testing Radio Frequency Index and Wireless Index of Active Antenna System |
| CN105974342A (en) * | 2016-07-06 | 2016-09-28 | 苏州富强科技有限公司 | Magnetic flux density measuring apparatus and measuring method thereof |
| US10177862B2 (en) * | 2017-05-22 | 2019-01-08 | Keysight Technologies, Inc. | System and method for performing over-the-air tests for massive multi-input/multi-output wireless system |
| CN107167308A (en) * | 2017-06-12 | 2017-09-15 | 清华大学 | A kind of adjustable electric strut test stand system and its method of testing |
| CN109301484A (en) * | 2018-10-24 | 2019-02-01 | 郑州辛西亚信息科技有限公司 | A kind of rotary type antenna |
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