CN109709433B - Method and device for testing air interface performance of radio frequency identification electronic license plate - Google Patents
Method and device for testing air interface performance of radio frequency identification electronic license plate Download PDFInfo
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- CN109709433B CN109709433B CN201910064428.5A CN201910064428A CN109709433B CN 109709433 B CN109709433 B CN 109709433B CN 201910064428 A CN201910064428 A CN 201910064428A CN 109709433 B CN109709433 B CN 109709433B
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Abstract
The invention relates to the technical field of electronic license plate system measurement, and discloses a method and a device for testing the air interface performance of a radio frequency identification electronic license plate, wherein the method comprises the following steps: the testing device comprises testing equipment, tested equipment or devices and a turntable, wherein the tested equipment or devices are arranged at the edge of the turntable, a testing channel with a specific width is arranged in the tangential direction of the turntable, the first side surface of the testing channel is overlapped with the tangential line of the turntable, an opening is arranged in a sector area where the second side surface of the testing channel is intersected with the turntable, and the angle of the turntable corresponding to the opening is a preset angle; the test equipment is arranged in the test channel. The invention has simple and convenient test mode and low test cost, and the measured value can be traced effectively, thereby effectively ensuring the validity and stability of the test result.
Description
Technical Field
The invention relates to the technical field of electronic license plate system measurement, in particular to a method and a device for testing the air interface performance of a radio frequency identification electronic license plate.
Background
At present, electronic license plates based on radio frequency identification technology have been gradually applied and tested. The application of the method can effectively support urban traffic management. The testing technology of the electronic license plate system is faced with a difficulty at present, namely the practical performance of the electronic license plate system at the speed of 150km/h or even higher needs to be tested, namely the air interface performance test is carried out, so that the stability and reliability of the electronic license plate system are fully evaluated under the high-speed motion state of a vehicle with the practical electronic license plate. For the difficulty, the current adopted test scheme is to ask a professional racer to accelerate the car to the target speed on a pre-planned special test road and perform actual test. The test scheme has the problems of high risk, high cost, poor stability and repeatability, incapability of effectively tracing test data and the like.
Disclosure of Invention
The invention provides a method and a device for testing the air interface performance of a radio frequency identification electronic license plate, and solves the technical problems that the practical performance test scheme of the radio frequency identification electronic license plate in the prior art has high risk, high cost, poor stability and repeatability and incapability of effectively tracing the source of test data.
The purpose of the invention is realized by the following technical scheme:
a method for testing the performance of an electronic license plate radio frequency identification air interface comprises the following steps:
the method comprises the steps that a turntable is driven to rotate, wherein a device to be tested (a tag reader in a radio frequency identification electronic license plate system) or a device (a radio frequency identification electronic license plate itself) is arranged on the edge of the turntable, a test channel with a specific width is arranged in the tangential direction of the turntable, the first side face of the test channel is overlapped with the tangential line of the turntable, an opening is formed in a sector area where the second side face of the test channel is intersected with the turntable, and the angle of the turntable corresponding to the opening is a preset angle;
and testing the tested device through the testing device arranged in the testing channel so as to test the stability of the air interface performance of the radio frequency identification electronic license plate.
A radio frequency identification electronic license plate air interface performance testing device comprises: the testing device comprises testing equipment, tested equipment or devices and a turntable, wherein the tested equipment or devices are arranged at the edge of the turntable, a testing channel with a specific width is arranged in the tangential direction of the turntable, the first side surface of the testing channel is overlapped with the tangential line of the turntable, an opening is arranged in a sector area where the second side surface of the testing channel is intersected with the turntable, and the angle of the turntable corresponding to the opening is a preset angle; the test equipment is arranged in the test channel.
The invention provides a method and a device for testing the air interface performance of a radio frequency identification electronic license plate, which comprises the following steps: the device testing method comprises the following steps that equipment to be tested, equipment or devices to be tested and a rotary table are arranged on the edge of the rotary table, a testing channel with a specific width is arranged in the tangential direction of the rotary table, the first side surface of the testing channel is overlapped with the tangential line of the rotary table, an opening is formed in a sector area where the second side surface of the testing channel is intersected with the rotary table, and the angle of the rotary table corresponding to the opening is a preset angle; the test equipment is arranged in the test channel. The invention has simple and convenient test mode and low test cost, and the measured value can be traced effectively, thereby effectively ensuring the validity and stability of the test result.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a device for testing the air interface performance of a radio frequency identification electronic license plate according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for testing the performance of a radio frequency identification electronic license plate air interface according to an embodiment of the invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic structural diagram of a device for testing the air interface performance of a radio frequency identification electronic license plate in an application process of an embodiment of the present invention, including: the device comprises a test device, the tested device or a device and a turntable, wherein the edge of the turntable is provided with the tested device, a test channel with a specific width is arranged in the tangential direction of the turntable, a first side surface of the test channel is overlapped with the tangential line of the turntable, a fan-shaped area (with the angle phi) where a second side surface of the test channel is intersected with the turntable is provided with an opening (namely, the intersected part of the fan-shaped area and the second side surface of the test channel is an opening, the actual opening is slightly larger than the intersection size by 1-2cm in practical application), and the angle of the turntable corresponding to the opening is a preset angle phi; the test equipment is arranged in the test channel or at the opening of the end part of the test channel. The following describes a method for testing the air interface performance of a radio frequency identification electronic license plate provided by the present invention with reference to fig. 1, and as shown in fig. 2, the method includes:
the edge of the turntable is provided with tested equipment, a test channel with a specific width is arranged in the tangential direction of the turntable, the first side surface of the test channel is overlapped with the tangential line of the turntable, a fan-shaped area where the second side surface of the test channel is intersected with the turntable is provided with an opening, and the angle of the turntable corresponding to the opening is a preset angle;
the testing device is aligned to the tested equipment or device along the tangential direction, and the tested device can be a tested electronic license plate or an electronic license plate reader.
In this embodiment, a test is performed within a set angle range, that is, the air interface performance in a high-speed motion state of the tag is achieved when the motion is from "minimum speed (V1 in fig. 1)" to "maximum speed (V0 in fig. 1)". The test does not correspond to a constant speed, but is also effective in reflecting performance in a high-speed motion state.
The value of the preset angle cannot be infinitely small because the time required for a single test (typically 10ms to 25ms) is determined, and it must be ensured that the movement time of the device under test is greater than the time required for the test within this angular range. Therefore, the selection of relevant parameters (including the diameter of the turntable, the rotation speed of the turntable, the minimum speed, the maximum speed, the single test time, the angle range, etc.) needs to satisfy certain conditions, such as:
the rotating speed of the rotating disc satisfies the following relation:
Wave-absorbing materials are arranged inside the test channel.
In step 201, an electric switch connected to the radio frequency part of the testing device may be controlled to provide a turn-on signal when the turntable moves within a specific angle range, so that the radio frequency signal is transmitted between the tested device or device and the testing device only when the tested device or device moves within the preset angle range.
In addition, the beam forming can be realized by setting the test equipment antenna as a directional antenna or in a software radio mode, and the beam direction points to the range of the test channel.
The invention provides a method for identifying the air interface performance of an electronic license plate by radio frequency. The invention has simple and convenient test mode and low test cost, and the measured value can be traced effectively, thereby effectively ensuring the validity and stability of the test result.
The embodiment of the invention also provides a device for testing the air interface performance of the radio frequency identification electronic license plate, which comprises: the testing device comprises testing equipment, tested equipment or devices and a turntable, wherein the tested equipment or devices are arranged at the edge of the turntable, a testing channel with a specific width is arranged in the tangential direction of the turntable, the first side surface of the testing channel is overlapped with the tangential line of the turntable, an opening is arranged in a sector area where the second side surface of the testing channel is intersected with the turntable, and the angle of the turntable corresponding to the opening is a preset angle; the test equipment is arranged in the test channel.
The bottom of the rotary table is provided with a driving motor, and the driving motor drives the rotary table to rotate. Wave-absorbing materials are arranged inside the test channel.
And two edges of a sector area, where the second side surface of the test channel is intersected with the turntable, are respectively provided with a position sensor, the position sensors are connected with an electric switch, and the electric switch is used for controlling a radio frequency signal of the test device.
The antenna of the testing device is an active directional antenna.
The device can formulate safe operation standard in the application process, and can effectively ensure the safety of the test scheme. Particularly, the testing device can be placed in a laboratory environment, and stability and reliability can be improved. Furthermore, when the device is placed in a more special laboratory environment such as an anechoic chamber or an electromagnetic shielding chamber, although certain cost is increased, the stability and reliability can be further improved.
The invention provides a device for identifying the empty port performance of an electronic license plate by radio frequency, which comprises: the device comprises a testing device, a tested device or device and a turntable, wherein the tested device or device is arranged at the edge of the turntable, a testing channel with a specific width is arranged in the tangential direction of the turntable, the first side surface of the testing channel is overlapped with the tangential line of the turntable, an opening is arranged in a sector area where the second side surface of the testing channel is intersected with the turntable, and the angle of the turntable corresponding to the opening is a preset angle; the test device is arranged in the test channel. The invention has simple and convenient test mode and low test cost, and the measured value can be traced effectively, thereby effectively ensuring the validity and stability of the test result.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus a necessary hardware platform, and certainly may be implemented by hardware, but in many cases, the former is a better embodiment. With this understanding in mind, all or part of the technical solutions of the present invention that contribute to the background can be embodied in the form of a software product, which can be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods according to the embodiments or some parts of the embodiments of the present invention.
The present invention has been described in detail, and the principle and embodiments of the present invention are explained herein by using specific examples, which are only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. A method for testing the air interface performance of a radio frequency identification electronic license plate is characterized by comprising the following steps:
the method comprises the steps that a turntable is driven to rotate, tested equipment or devices are arranged on the edge of the turntable, a testing channel with a specific width is arranged in the tangential direction of the turntable, the first side face of the testing channel is overlapped with the tangential line of the turntable, an opening is formed in a sector area where the second side face of the testing channel is intersected with the turntable, and the angle of the turntable corresponding to the opening is a preset angle;
testing the tested equipment or device through the testing equipment arranged in the testing channel so as to test the stability of the air interface performance of the radio frequency identification electronic license plate;
wherein the method further comprises: controlling an electric switch to enable a turntable to give a switching-on signal when moving to a specific angle range, so that a radio frequency signal can be transmitted between the tested equipment or device and the testing equipment when the tested equipment or device moves to the preset angle range;
wherein the content of the first and second substances,
wherein n is the rotation speed per second of the turntable, phi is the preset angle, and T is the test time.
2. The method for testing the air interface performance of the radio frequency identification electronic license plate of claim 1, wherein a wave-absorbing material is arranged in the test channel.
3. The method according to claim 1, wherein a beam direction of an antenna of the test device is controlled to point within a range of the test channel.
4. The utility model provides a radio frequency identification electron license plate air interface performance's testing arrangement which characterized in that includes: the testing device comprises testing equipment, tested equipment or devices and a turntable, wherein the tested equipment or devices are arranged at the edge of the turntable, a testing channel with a specific width is arranged in the tangential direction of the turntable, the first side surface of the testing channel is overlapped with the tangential line of the turntable, an opening is arranged in a sector area where the second side surface of the testing channel is intersected with the turntable, and the angle of the turntable corresponding to the opening is a preset angle; the test equipment is arranged in the test channel;
the device is also used for controlling the electric switch to enable the turntable to give a switching-on signal when moving to a specific angle range, so that a radio frequency signal can be transmitted between the tested equipment or device and the testing equipment when the tested equipment or device moves to the range of the preset angle;
wherein the content of the first and second substances,
wherein n is the rotation speed per second of the turntable, phi is the preset angle, and T is the test time.
5. The apparatus for testing the air interface performance of a radio frequency identification electronic license plate of claim 4, wherein the turntable is driven by a motor disposed at the bottom.
6. The apparatus for testing the air interface performance of a radio frequency identification electronic license plate of claim 4, wherein a wave-absorbing material is disposed inside the testing channel.
7. The device for testing the air interface performance of the radio frequency identification electronic license plate of claim 4, wherein two edges of a sector area where the second side surface of the test channel intersects with the turntable are respectively provided with a position sensor, the position sensors are connected with an electric switch, and the electric switch is used for controlling a radio frequency signal of the test equipment.
8. The device for testing the air interface performance of the radio frequency identification electronic license plate of claim 4, wherein an antenna of the testing device is an active directional antenna.
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| CN201910064428.5A CN109709433B (en) | 2019-01-23 | 2019-01-23 | Method and device for testing air interface performance of radio frequency identification electronic license plate |
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| CN201910064428.5A CN109709433B (en) | 2019-01-23 | 2019-01-23 | Method and device for testing air interface performance of radio frequency identification electronic license plate |
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| CN109709433B true CN109709433B (en) | 2021-11-30 |
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| CN101980252A (en) * | 2010-09-19 | 2011-02-23 | 中国科学院自动化研究所 | Response frequency benchmark test system and method for electronic tag in high-speed motion state |
| CN102360439A (en) * | 2011-10-24 | 2012-02-22 | 中国科学院自动化研究所 | Performance testing method for electronic tag |
| CN109242069A (en) * | 2018-09-20 | 2019-01-18 | 上海华申智能卡应用系统有限公司 | A kind of steel cylinder electronic label read-write method and system based on phased array antenna |
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2019
- 2019-01-23 CN CN201910064428.5A patent/CN109709433B/en active Active
Patent Citations (6)
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| JP2008171320A (en) * | 2007-01-15 | 2008-07-24 | Sato Corp | Printer |
| CN101777136A (en) * | 2009-12-09 | 2010-07-14 | 中国科学院自动化研究所 | Performance test method and system thereof of electronic tag under high-speed motion state |
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