CN104811254B - A kind of WiFi based on PXI instruments produces survey method parallel - Google Patents
A kind of WiFi based on PXI instruments produces survey method parallel Download PDFInfo
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- CN104811254B CN104811254B CN201510182299.1A CN201510182299A CN104811254B CN 104811254 B CN104811254 B CN 104811254B CN 201510182299 A CN201510182299 A CN 201510182299A CN 104811254 B CN104811254 B CN 104811254B
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Abstract
The invention discloses a kind of WiFi based on PXI instruments to produce survey method parallel, based on C/S models, connects part and main controller to be measured using cable, and part to be measured is attached with test equipment by 3066 radio frequency combiners of Aeroflex PXI；Parallel control is carried out to part to be measured using main controller, the signal between part to be measured and test equipment is transmitted by 3066 radio frequency combiners of Aeroflex PXI and completes receiver test and transmitter test；Wherein receiver test takes concurrent test mode, and the concurrent testing mode using interface switch is taken in transmitter test.The present invention is dispatched by radio frequency combiner, multithreading, software, improves the utilization rate and handling capacity of test equipment, improves the efficiency of production line test.
Description
Technical field
The present invention relates to radio frequency automatic field, particularly a kind of measurement industry of radio frequency signal automatic production line.
Background technology
Network technology and mobile phone user have directly driven global WiFi equipment yield rapidly to increase the demand of wireless telecommunications.
In WiFi process of producing product, producing line conventional serial test method test equipment standby time is long, testing efficiency is low.It is common simultaneously
Row test method is included concurrent test, is tested using concurrent testing, the interleaved parallel of interface switch, Automatic dispatching concurrent testing.
It is limited to the particularity of WiFi products, during production line test, the automated test device such as Litepoint manufacturer is usually all logical
Increase test equipment (signal analyzer and signal source) is crossed to realize concurrent test, so that improving production surveys testing efficiency.But survey
The expensive of equipment, and the continuity that concurrent test is only serially tested are tried, without the profit that inherently raising test is set
With rate.A kind of scheme is just needed to effectively improve the utilization rate of test equipment on the premise of control cost at this time.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of WiFi based on PXI instruments
Parallel production survey method, solves the technical problem that existing WiFi product tests efficiency is low, test equipment utilization rate is low.
Technical solution：To achieve the above object, the technical solution adopted by the present invention is：
A kind of WiFi based on PXI instruments produces survey method parallel, and based on C/S models, main controller is connected to by cable
On computer, the computer is connected with part to be measured, and the main controller is also connected with test equipment, and the test equipment passes through
3066 radio frequency combiners of Aeroflex PXI are connected with part to be measured；
On the one hand main controller controls part, on the other hand control test equipment to be measured by computer, part to be measured and test are set
It is standby to coordinate progress transmitter test and receiver test；Test signal is carried out by 3066 radio frequency combiners of Aeroflex PXI
Transmit, and transmitter test is used using the concurrent testing mode using interface switch, receiver test and is based on multithreading skill
The concurrent test mode of art scheduling.
In test process, transmitter test is carried out first, same transmitter test assignment is carried out successively to part to be measured, treats
After all parts to be measured all complete a transmitter test assignment, next transmitter test assignment is carried out to part to be measured；Treat institute
After the completion of having transmitter test assignment all, receiver test is carried out.
The present invention is realized to multiple to be measured on the premise of single rf signal analysis instrument and single radio-frequency signal source
The quick test of part, adds the utilization rate of test equipment, improves whole testing efficiency.
Beneficial effect：
The present invention is to be based on PXI modular instruments, combines the parallel test techniques and concurrent test technology of interface switch
Realize, specifically include advantages below：
1), based on C/S network models, by part to be measured connection on computers, computer is connected with main controller by cable
Connect, such main controller at the same time can be controlled multiple parts to be measured, it is possible to reduce part to be measured during traditional sequential testing
Initialization time and part to be measured between switching time, saved the testing time of a part, increased the utilization of test equipment
Rate and throughput of system；
2), since part to be measured is in the mutual handoff procedure of transmitter test assignment and receiver test task is carried out, treat
Surveying part needs to consume certain conversion time, and continuous transmitter test or continuous receiver test task, part to be measured need to only change
Variable element, elapsed time is few, so by the analysis to test plan, transmitter test and receiver test two parts are carried out
Separation, continuously carries out all transmitter test assignments, after the completion for the treatment of all transmitter test assignments, then carries out remaining connect
Receipts machine task, thus can further optimal inspection process, reduce time of part control to be measured.
3), in transmitter test process, 3066 inherent characteristics of Aeroflex PXI are utilized, it is possible to achieve utilize interface
The concurrent testing of switch, so as to improve the utilization rate of test equipment, increases the handling capacity of system；In receiver test process
In, dispatched also with 3066 inherent characteristics of Aeroflex PXI, and by software multithread technology, realize receiver
Complete concurrent test, significantly reduces the testing time.
Brief description of the drawings
Fig. 1 is that traditional WiFi produces flow gauge figure；
Single part TX, RX the test process schematic diagrames to be measured of Fig. 2；
Fig. 3 is 3066 characteristic schematic diagrames of Aeroflex PXI；
Fig. 4 hardware structure schematic diagrames of the present invention；
The time of the parallel test method of the present invention and traditional serial test method contrast signal when Fig. 5 transmitters are tested
Figure；
The parts to be measured of Fig. 6 tetra- carry out 2 transmitter test assignments and 2 receiver test task loss time contrast signals
Figure.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
The serial test process of traditional single product is as shown in Figure 1, including following steps：
Step 1: the initialization of equipment.Synchronization and initialization including test equipment, further include the initialization of part to be measured
(system gives part instruction to be measured, makes it enter production survey pattern).
Step 2: calibration.Including transmission power calibration and frequency calibration two parts.In this step, part to be measured is not completely cured
The transmission power and transmission center frequency values franchise of oneself are adjusted according to the measurement result of alignment requirements and test equipment, until calibration will
Seek scope.
Step 3: transmitter is tested.After the completion of calibration, part to be measured sends radiofrequency signal, and signal analyzer is analyzed
Calculate.
Step 4: receiver test.Receiver test entry during production is surveyed is Packet Error Ratio, and test process is derived digital signal
Given out a contract for a project with certain power, be usually 1000 or 500, control part packet receiving to be measured.Treat that signal source is sent, part to be measured, which returns, to be received
The bag number arrived, Packet Error Ratio=(number-packet receiving number of giving out a contract for a project)/number of giving out a contract for a project.Production is surveyed is typically less than 10% by index Packet Error Ratio.
Step 5: finally display test result and printing test report.
Traditional producing line is serially tested, although building for system is simple, test program is write easily, not error-prone,
Shortcoming is that system can only once test a part to be measured, and test equipment utilization rate is low, testing time length, testing cost
It is higher.Part working time to be measured and test equipment work when the transmitter of single part to be measured tests (TX) and receiver test (RX)
Time is as shown in Figure 2.During the test, the initialization procedure of part to be measured and control process also occupy the regular hour,
Switch the part to be measured currently tested in serial test process and be also required to the time.
The method of the present invention, hardware are built based on 3066 radio frequency combiners of Aeroflex PXI as shown in Figure 3,
Hardware device framework such as Fig. 4.Based on C/S models, main controller is connected on computer by cable, the computer with it is to be measured
Part is connected, and the main controller is also connected with test equipment, and the test equipment passes through 3066 radio frequency combiners of Aeroflex PXI
It is connected with part to be measured；On the one hand main controller controls part, on the other hand control test equipment to be measured, part to be measured and survey by computer
Try equipment and coordinate progress transmitter test and receiver test；Test signal passes through 3066 radio frequency combiners of Aeroflex PXI
Transmitted, and transmitter test is used based on multi-thread using the concurrent testing mode using interface switch, receiver test
The concurrent test mode of journey technology scheduling：When wherein transmitter is tested, multiple part orders to be measured are penetrated to Aeroflex PXI 3066
Frequency combiner launches signal Tx1, Tx2, Tx3, Tx4 ..., the signal that 3066 radio frequency combiners of Aeroflex PXI will receive
Pass to rf signal analysis instrument；During receiver test, radio-frequency signal source is launched to 3066 radio frequency combiners of Aeroflex PXI
Signal and by 3066 radio frequency combiners of Aeroflex PXI be decomposed into the signal Rx1 being delivered to respectively on each part to be measured,
Rx2、Rx3、Rx4……。
In test process, transmitter test is carried out first, same transmitter test assignment is carried out successively to part to be measured, treats
After all parts to be measured all complete a transmitter test assignment, next transmitter test assignment is carried out to part to be measured；Treat institute
After the completion of having transmitter test assignment all, receiver test is carried out.
The test method of the present invention and traditional serial test method are subjected to contrast test, take part 1 to be measured~part to be measured
4, part to be measured is connected respectively on computer PC1~PC4, and computer is connected on main controller by router, cable, carry out
2 transmitter test assignments and 2 receiver test tasks, obtain contrast schematic diagram as shown in Figure 5 and Figure 6.
From test process in itself from the point of view of, the handling capacity and test equipment of test method of the invention due to improving system
Utilization rate, so significantly reducing the testing time, reduces testing cost, increases the handling capacity of test system.In addition, signal
Figure only considers test process shared time in itself, does not switch the part to be measured initialization during traditional test and test assignment
The spent time is taken into account, if so these factors are all taken into account, the test method of the actual present invention is in contrast
The time can more be saved, improve efficiency.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (1)
1. a kind of WiFi based on PXI instruments produces survey method parallel, it is characterised in that：Based on C/S models, main controller is passed through into net
Line is connected on computer, and the computer is connected with part to be measured, and the main controller is also connected with test equipment, and the test is set
Standby to be connected by 3066 radio frequency combiners of Aeroflex PXI with part to be measured, the test equipment includes radio-frequency signal source and penetrates
Frequency signal analyzer, i.e., described radio-frequency signal source is connected with main controller and 3066 radio frequency combiners of Aeroflex PXI, described to penetrate
Frequency signal analyzer is connected with main controller and 3066 radio frequency combiners of Aeroflex PXI, and the Aeroflex PXI 3066 are penetrated
Frequency combiner is connected with part to be measured；
On the one hand main controller controls part, on the other hand control test equipment to be measured by computer, part to be measured and test equipment are matched somebody with somebody
Close and carry out transmitter test and receiver test；Test signal is transmitted by 3066 radio frequency combiners of Aeroflex PXI,
And transmitter test, using the concurrent testing mode using interface switch, receiver test is used to be dispatched based on multithreading
Concurrent test mode；When wherein transmitter is tested, multiple part orders to be measured are sent out to 3066 radio frequency combiners of Aeroflex PXI
Signal Tx1, Tx2, Tx3, Tx4 ... are penetrated, the signal received is passed to radio frequency by 3066 radio frequency combiners of Aeroflex PXI
Signal analyzer；During receiver test, radio-frequency signal source is launched signal to 3066 radio frequency combiners of Aeroflex PXI and is passed through
3066 radio frequency combiners of Aeroflex PXI be decomposed into the signal Rx1, Rx2 being delivered to respectively on each part to be measured, Rx3,
Rx4……；In test process, transmitter test is carried out first, same transmitter test assignment is carried out successively to part to be measured, treats
After all parts to be measured all complete a transmitter test assignment, next transmitter test assignment is carried out to part to be measured；Treat institute
After the completion of having transmitter test assignment all, receiver test is carried out.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105721244A (en) * | 2016-01-29 | 2016-06-29 | 深圳市极致汇仪科技有限公司 | Multi-type DUT (Device under control) test system and method |
| CN108983075B (en) * | 2018-08-17 | 2023-08-08 | 惠州高盛达科技有限公司 | Multipath parallel SDIO test system |
| CN109709424A (en) * | 2018-12-29 | 2019-05-03 | 中电科仪器仪表有限公司 | A kind of implementation method of the more test item concurrent testings of EMC Auto-Test System |
| CN112988489A (en) * | 2021-04-20 | 2021-06-18 | 易兆微电子(杭州)股份有限公司 | Method, device, equipment and storage medium for testing radio frequency chip |
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