CN107911180A - A kind of spacial radio frequency performance test method of large scale end product - Google Patents
A kind of spacial radio frequency performance test method of large scale end product Download PDFInfo
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- CN107911180A CN107911180A CN201711139263.0A CN201711139263A CN107911180A CN 107911180 A CN107911180 A CN 107911180A CN 201711139263 A CN201711139263 A CN 201711139263A CN 107911180 A CN107911180 A CN 107911180A
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- 239000007795 chemical reaction product Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000011056 performance test Methods 0.000 title claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 91
- 239000000047 product Substances 0.000 claims abstract description 48
- 230000035945 sensitivity Effects 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 23
- 230000008054 signal transmission Effects 0.000 claims description 4
- 238000004378 air conditioning Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 206010003084 Areflexia Diseases 0.000 description 1
- 241001269238 Data Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000013101 initial test Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
-
- 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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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention relates to terminal capabilities testing field, discloses a kind of spacial radio frequency performance test method of large scale end product, solves the problems, such as that the large scale smart terminal product such as current flat panel TV, air-conditioning, refrigerator is difficult to spacial radio frequency performance assessment.The present invention includes step：Test terminal is placed on the turntable of darkroom so that the geometric center of terminal is overlapped with the three-dimensional sphere centre of sphere of test zone, and comprehensive test instrument sends test signal by antenna to darkroom, and establishes and connect with tested product；After measured terminal receives test signal, required to send feedback signal according to comprehensive test instrument；Solve total radiant power, omnidirectional's receiving sensitivity and the handling capacity related information of tested product respectively according to feedback signal；End product spacial radio frequency performance is assessed based on three total radiant power, omnidirectional's receiving sensitivity and handling capacity related information aspects.The present invention is suitable for the large scale smart terminal products such as flat panel TV, air-conditioning, refrigerator.
Description
Technical field
The present invention relates to terminal capabilities testing field, the spacial radio frequency performance of more particularly to a kind of large scale end product is surveyed
Method for testing.
Background technology
Spacial radio frequency performance test be one shielding areflexia anechoic chamber, in, by the way of three-dimensional turntable,
Transmitting and reception characteristic to sample space are tested, and can truly reflect the space propagation of product in actual use
Situation.
At present, the test object of spacial radio frequency performance is mainly mobile phone, tablet, notebook equidimension less intelligently end
End, test event generally include total radiant power (abbreviation TPR, the main situation for reflecting terminal transmission power), and total omnidirectional receives
Sensitivity (abbreviation TIS, the main situation for reflecting terminal receiving sensitivity), also has corresponding testing standard or rule in industry
Model.And for the spacial radio frequency performance of the large scale end product such as flat panel TV, air-conditioning, refrigerator, do not have also in industry corresponding
Standard and requirement.At the same time as development of the white goods product to intelligent direction, almost all of product all carry channel radio
Believe module, stability, the data volume etc. of transmission being wirelessly transferred are required it is higher and higher, product space radio-frequency performance increasingly by
The attention of relevant manufactures in industry.
The content of the invention
The technical problem to be solved in the present invention is：A kind of spacial radio frequency performance test side of large scale end product is provided
Method, solves the large scale smart terminal product such as current flat panel TV, air-conditioning, refrigerator and is difficult to asking for spacial radio frequency performance assessment
Topic.
To solve the above problems, the technical solution adopted by the present invention is：A kind of space radio frequency of large scale end product
Energy test method, includes the following steps：
Tested terminal is placed on the turntable of darkroom so that the geometric center of tested terminal and the three-dimensional of test zone
The sphere centre of sphere overlaps, and comprehensive test instrument sends test signal by antenna to darkroom, and establishes and connect with measured terminal；
After measured terminal receives test signal, required to send feedback signal according to comprehensive test instrument；
Solve total radiant power, omnidirectional's receiving sensitivity and the handling capacity association letter of tested product respectively according to feedback signal
Breath；
The space for being tested product is penetrated based on three total radiant power, omnidirectional's receiving sensitivity and handling capacity related information aspects
Frequency performance is assessed.
Further, the step of total radiant power for solving tested product, includes：
Rotating table and antenna, test transmission power of the tested product in each test point of three-dimensional sphere successively, and further count
Calculate and obtain tested product total radiant power.
Further, the step of omnidirectional's receiving sensitivity for solving tested product, includes：
Rotating table and antenna, test tested product in the equivalent omnidirectional sensibility of each test point of three-dimensional sphere, go forward side by side successively
The omnidirectional that one step calculates the tested product of acquisition receives sensitivity；
The method for testing the equivalent omnidirectional sensibility of each test point is：Comprehensive test instrument sends test data bag to measured terminal,
And error rates of data is passed according to measured terminal feedback information Synchronization Analysis and record；Signal transmission power is gradually reduced, until
The bit error rate that product receives just reaches requirement, records the transmission power of comprehensive test instrument at this time, and the transmission power of comprehensive test instrument is at this time
The equivalent omnidirectional sensibility in the product position.
Further, the step of handling capacity related information for solving tested product, includes：
Rotating table and antenna, test handling capacity of the tested product in each test point of three-dimensional sphere, it is maximum to obtain each test point
With minimum throughout ratio, gradually reducing comprehensive test instrument reduces signal strength, and the throughput value until measuring each point drops to for the first time
The threshold value of test, records the signal strength values, and obtains the minimum value of useful signal；
The method for testing the handling capacity of each test point is：Comprehensive test instrument sends data flow to terminal, tests the current state limit
Message transmission rate, current state limit data transmission rate is handling capacity.
Specifically, the test signal includes：Wi-Fi signal, Bluetooth signal, 4G signals and NB-IOT test signals.
The beneficial effects of the invention are as follows：The present invention considers transmitting, reception and transmission rate, from total radiant power, entirely
End product spacial radio frequency performance is assessed in terms of receiving sensitivity and handling capacity related information three, can be comprehensively true
Evaluation and test product radio transmission performance, understand product design short slab.Product going offline, blocking in use can effectively be avoided
Situations such as pausing, can ensure that the stability and reliability of its transmission.
Brief description of the drawings
Fig. 1 is the flow chart of embodiment.
Embodiment
Embodiment provides a kind of large scale end product spacial radio frequency performance test method, right respectively in test method
Total radiant power, omnidirectional's receiving sensitivity and handling capacity related information, it is comprehensive to ensure to test.Idiographic flow is as shown in Figure 1：
In step S01, will test terminal be placed on the turntable of darkroom, comprehensive test instrument to darkroom send test signal, and with
Tested product establish connection.Need exist for terminal being placed on the position that holds water, because of large-scale end product and its radio communication mold
Block product moment is larger, and position has a great influence test result in test.When mobile phone, tablet are when small intelligent terminal test, three
N-dimensional sphere n center communicates module mounting location coincidence substantially, this is simply not proposed to the large-scale intelligence such as television set, refrigerator
Can terminal.So being provided in this example, the geometric center of terminal need to be overlapped with the three-dimensional sphere centre of sphere of test zone, could be preferably
Assess product space radio-frequency performance.
In step SO2, after tested product receive test signal, feedback signal is sent according to request comprehensive test instrument.Wherein, surveying
Try total radiant power, omnidirectional's receiving sensitivity and during handling capacity, its feedback signal is all different, can use signaling and non-herein
Two kinds of signaling mode is tested.
In step S03, the angle that antenna rotates is set to θ, the angle that turntable rotates is φ, and product need to be made to be in maximum
Transmission power state；The measurement of power of 15 degree of progress, wherein θ=0 ° and θ are respectively separated in the θ axis and φ axis of spherical coordinates axis
=180 ° need not test, so need to test 264 points altogether.
In step S04, product total radiant power TRP can be calculated according to formula below:
Wherein：N and M is respectively the sampling number of θ axis and φ axis, N=11, M=24 when TRP is tested.
In step S05, comprehensive test instrument sends test data bag to measured terminal, and synchronous according to measured terminal feedback information
Analysis and record pass error rates of data BER.
During this gradually reduce signal transmission power, until product receive the bit error rate just reached requirement (8% or
10%) transmission power of comprehensive test instrument at this time, is recorded, is the product position receiving sensitivity；If required it was found that the bit error rate exceedes
It is worth (8% or 10%), then gradually increases transmission power, it is known that the bit error rate just reaches at or above required value；
30 degree of progress one-shot measurements are respectively separated in the θ axis and φ axis of spherical coordinates axis, wherein θ=0 ° and θ=180 ° is not required to
Test, so 60 points need to be tested altogether.
In step S06, it is sensitive can be calculated according to the following formula according to step S05 test datas for the total omnidirectional's reception of product
Spend TIS：
Wherein, N and M is respectively the sampling number of θ axis and φ axis, N=5, M=12 when TRP is tested.
In step S07, comprehensive test instrument sends data flow to terminal, and test current state limit data transmission rate (gulps down
The amount of spitting), it is denoted as T1.
Turntable and antenna are controlled, 30 degree of measurements of once being handled up are respectively separated in the θ axis and φ axis of spherical coordinates axis, its
Middle θ=0 ° and θ=180 ° need not be tested, the T60 that so need to test 60 points altogether, and takes turns doing T1, T2, T3 ....
In the actual environment, end product need to face complicated user's scene, and the gateway being attached thereto may be produced in terminal
Any orientation of product, the whole three-dimensional sphere of team's terminal carry out test and are particularly important.
In test data, it is maximized and is denoted as Tmax, takes wherein minimum value to be denoted as Tmin, can be according to different intelligent terminal
Characteristic is, it is specified that Tmin and Tmax ratios again in certain scope, to ensure that the transmitting-receiving performance difference of end product all directions is smaller.
In step S08, control turntable returns to initial test position, gradually lowers comprehensive test instrument signal transmission power.Often drop
Power, need to carry out a testing throughput, until 60% of throughput value just less than or equal to T1, record hair at this time
Penetrate performance number R1；According to above-mentioned method, R60 is tested remaining 59 points, and be denoted as R2, R3 respectively ... respectively.
Under normal conditions, when product data transmission rate is more than 40% or so, product data transmission can be influenced, causes video
Caton phenomenon.Handling capacity is provided in this threshold value, the useful signal that then observation comprehensive test instrument is sent in the test method of place
Intensity, its signal strength are smaller, it was demonstrated that measured terminal transmission performance in the case of weak signal is better.
In step S09, minimum value in R1 to R60 is taken, is denoted as Rmin.The door of Rmin can be provided according to different terminals characteristic
Limit, to ensure that end product has preferable transmission performance in each orientation.
Total radiant power, omnidirectional's receiving sensitivity are carried out to each wireless mode and high, medium and low channel of end product
It is comprehensive to ensure to test and handling capacity needs.
The basic principle of the present invention and main feature are the foregoing described, the description of specification simply illustrates the original of the present invention
Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements
It all fall within the protetion scope of the claimed invention.
Claims (5)
1. a kind of spacial radio frequency performance test method of large scale end product, it is characterised in that include the following steps：
Tested terminal is placed on the turntable of darkroom so that the geometric center of tested terminal and the three-dimensional sphere of test zone
The centre of sphere overlaps, and comprehensive test instrument sends test signal by antenna to darkroom, and establishes and connect with measured terminal；
After measured terminal receives test signal, required to send feedback signal according to comprehensive test instrument；
Solve total radiant power, omnidirectional's receiving sensitivity and the handling capacity related information of tested product respectively according to feedback signal；
To the space radio frequency of tested product in terms of based on total radiant power, omnidirectional's receiving sensitivity and handling capacity related information three
It can be assessed.
2. a kind of spacial radio frequency performance test method of large scale end product as claimed in claim 1, it is characterised in that ask
The step of total radiant power of the tested product of solution, includes：
Rotating table and antenna, test transmission power of the tested product in each test point of three-dimensional sphere successively, and further calculate and obtain
Product total radiant power must be tested.
3. a kind of spacial radio frequency performance test method of large scale end product as claimed in claim 2, it is characterised in that ask
The step of omnidirectional's receiving sensitivity of the tested product of solution, includes：
Rotating table and antenna, test equivalent omnidirectional sensibility of the tested product in each test point of three-dimensional sphere successively, and further
The omnidirectional for calculating the tested product of acquisition receives sensitivity；
The method for testing the equivalent omnidirectional sensibility of each test point is：Comprehensive test instrument sends test data bag, and root to measured terminal
Error rates of data is passed according to measured terminal feedback information Synchronization Analysis and record；Signal transmission power is gradually reduced, until product
The bit error rate of reception just reaches requirement, records the transmission power of comprehensive test instrument at this time, the transmission power of comprehensive test instrument is product at this time
The equivalent omnidirectional sensibility in the position.
4. a kind of spacial radio frequency performance test method of large scale end product as claimed in claim 1, it is characterised in that ask
The step of handling capacity related information of the tested product of solution, includes：
Rotating table and antenna, test handling capacity of the tested product in each test point of three-dimensional sphere, obtain each test point it is maximum with most
Small handling capacity ratio, gradually reducing comprehensive test instrument reduces signal strength, and the throughput value until measuring each point drops to first test
Threshold value, record the signal strength values, and obtain the minimum value of useful signal；
The method for testing the handling capacity of each test point is：Comprehensive test instrument sends data flow to terminal, tests current state limit data
Transmission rate, current state limit data transmission rate is handling capacity.
A kind of 5. spacial radio frequency performance test method of large scale end product as claimed in claim 1, it is characterised in that institute
Stating test signal includes：Wi-Fi signal, Bluetooth signal, 4G signals and NB-IOT test signals.
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Cited By (5)
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| CN109104254A (en) * | 2018-07-05 | 2018-12-28 | 奇酷互联网络科技（深圳）有限公司 | Antenna near-field test method and device |
| CN113285769A (en) * | 2020-02-20 | 2021-08-20 | 罗德施瓦兹两合股份有限公司 | Method and test system for measuring total radiation power |
| CN114362838A (en) * | 2020-09-28 | 2022-04-15 | 安立股份有限公司 | Mobile terminal testing device and mobile terminal testing method |
| CN114374444A (en) * | 2021-12-27 | 2022-04-19 | 重庆长安汽车股份有限公司 | Wireless test method and system for radio frequency performance of vehicle-mounted Bluetooth device |
| CN115941831A (en) * | 2023-03-09 | 2023-04-07 | 深圳百沃彰世科技有限公司 | Smart phone communication radio frequency test system and test method |
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Application publication date: 20180413 |