CN114726768A - Automatic wireless board card testing device and method based on throughput measurement - Google Patents
Automatic wireless board card testing device and method based on throughput measurement Download PDFInfo
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Abstract
The invention belongs to the field of automatic test of wireless board cards, and particularly relates to an automatic test device and method of a wireless board card based on throughput measurement. The method comprises the following steps: selecting a test mode, detecting information of the equipment to be tested by a test computer and establishing TCP connection with the information; the testing computer detects the wireless connection state of the equipment to be tested, and after the wireless connection is successfully established, the power and attenuation precision of the equipment to be tested are tested; after the success and attenuation precision tests are completed, the testing computer controls the two-way adjustable attenuator to adjust the power and tests the throughput of the equipment to be tested. The wireless board card batch detection system is particularly suitable for the application scene of wireless board card batch detection in a production workshop, a traditional WLAN comprehensive tester is not used for detection, the test cost input is effectively reduced, meanwhile, the wireless board card batch detection system belongs to a fully-automatic test system, the introduction of artificial operation errors can be effectively avoided, the error occurrence rate is reduced, and the production efficiency is improved.
Description
Technical Field
The invention belongs to the field of automatic test of wireless board cards, and particularly relates to an automatic test device and method of a wireless board card based on throughput measurement.
Background
With the vigorous development of industrial internet of things in China, wireless transmission networks are widely applied, and especially the wireless board cards developed based on the 802.11 protocol family have huge demand. The current production situation of the existing wireless board card is that the factory inspection link becomes a main factor for limiting the production energy, and the current production situation mainly has the following reasons: 1) the price of the test instrument is high, and the price of one instrument is about 50 ten thousand yuan; 2) the test instrument needs to be operated by professional technicians, the access threshold of the tester is high, and the wage cost is more than one time of that of ordinary operators; 3) the maintenance cost of the test instrument is high, equipment can be damaged under the conditions of static electricity, lightning stroke, port overpower and the like, the price of the instrument maintained once is 2-6 ten thousand yuan in general, and the maintenance period is more than 2 months; 4) due to cost factors, the number of wireless board card test lines is small, and the requirement of daily test number cannot be met; 5) only a small part of functions of the professional test instrument are applied, most resources are not utilized, and the resource waste is serious.
Disclosure of Invention
Aiming at the defects, the invention provides the automatic test device and the method of the wireless board card based on throughput measurement, provides the test device and the method of the wireless board card, which improve the test efficiency, reduce the artificial test error and greatly reduce the test cost, and effectively avoids the excessive waste of test resources; the wireless transmission performance of the product is equivalently verified through a throughput measurement method, the deployment cost of the wireless board automatic testing device based on the throughput measurement is only one percent of the testing cost of the original professional tester, the wireless board automatic testing device based on the throughput measurement greatly reduces the access threshold of users, the users can be on duty after simple training, one tester can simultaneously manage 5 automatic testing production lines, the production testing efficiency is effectively improved, and the personnel cost input is reduced.
The technical scheme adopted by the invention for realizing the purpose is as follows:
wireless integrated circuit board automatic testing arrangement based on throughput measurement includes: the wireless board card testing tool comprises a wireless board card testing tool, a testing computer and an auxiliary testing computer, wherein the testing computer and the auxiliary testing computer are respectively connected with the wireless board card testing tool;
wherein, wireless integrated circuit board test fixture includes: management type POE switch, wireless integrated circuit board, double-circuit adjustable attenuator, attenuator group that the order is connected, management type POE switch still links to each other with test computer, auxiliary test computer and test equipment respectively, attenuator group links to each other with test equipment, double-circuit adjustable attenuator links to each other with test computer, still includes the switching power supply who links to each other with management type POE switch and double-circuit adjustable attenuator respectively.
The attenuator group comprises a first attenuator and a second attenuator, and two ends of each attenuator are respectively connected with the equipment to be tested and the two-path adjustable attenuator.
The dual-path adjustable attenuator comprises a processor, a serial port unit, a radio frequency attenuation unit and a serial-parallel conversion unit which are sequentially connected, and further comprises a power management unit connected with the processor, the processor is connected with a test computer through the serial port unit, the radio frequency attenuation unit is connected with a wireless board card through a radio frequency interface of the radio frequency attenuation unit, the serial-parallel conversion unit is connected with an attenuator group, and the power management unit is connected with a switching power supply.
The automatic test method of the wireless board card based on the throughput measurement comprises the following steps:
selecting a test mode, detecting information of the equipment to be tested by a test computer and establishing TCP connection with the information;
the testing computer detects the wireless connection state of the equipment to be tested, and after the wireless connection is successfully established, the power and attenuation precision of the equipment to be tested are tested;
after the success and attenuation precision tests are completed, the testing computer controls the two-way adjustable attenuator to adjust the power and tests the throughput of the equipment to be tested.
The test mode comprises a conventional test mode and a complete test, the conventional test mode only carries out throughput test of 20MHz bandwidth, and the complete test carries out throughput test of 20MHz, 40MHz and 80MHz bandwidth.
The power and attenuation precision test comprises the following steps:
test computer reading wireless board card access device signal level value P1、P2Calculating the horizontal power value P of the deviceHVertical power value PV，PH＝P1+LH，PV＝P2+LVWherein L isH、LVIs the attenuation value on two radio frequency links;
the test computer controls the attenuation precision value a set by the attenuation in the tested equipment, and reads the signal level value P of the access equipment of the wireless board card11、P12And calculating the attenuation errors of two radio frequency ports of the tested equipment, delta11＝P1-P11-a，△12＝P2-P12-a；
The last step is executed for a plurality of times to obtain the attenuation error delta of two radio frequency ports of a plurality of groups of tested devicesn1＝P1-Pn1-n*a，△n2＝P2-Pn2And n, n is the test times, and the attenuation error and the attenuation precision value a of each group are recorded to finish the test.
The attenuation accuracy value a is 5 dB.
The throughput test comprises the following steps:
test computer reading wireless board card access device signal level value P1、P2Setting the target level value of the radio frequency signal of the first throughput test as A, and the attenuation values which need to be written into the two-way adjustable attenuator and are calculated by the test computer as L1H＝P1+A、L1V＝P2+A；
The test computer writes attenuation values L into the two-way adjustable attenuator1H+ B and L1V+ B, testing the throughput at the moment, wherein B is a set value;
the last step is executed for a plurality of times, and the test computer writes attenuation values L into the double-path adjustable attenuator1H+ n B and L1VAnd n is the test times, and the throughput of each group is recorded to finish the test.
The target level value A is-50 dBm, and the set value B is-10 dBm.
The invention has the following beneficial effects and advantages:
1. the invention can replace the existing WLAN comprehensive tester, effectively avoid the excessive waste of testing resources and simultaneously reduce the testing cost to 1 percent of the original meter scheme.
2. The cost of the test instrument is no longer a main factor for restricting the construction of the test production line, the construction of the test production line can be increased according to the capacity condition of the production workshop, and the test link is no longer a main factor for restricting the production capacity of the wireless board card.
3. The invention effectively reduces the access threshold of operators and converts complex test work into flow operation.
4. The invention realizes the aim that one tester controls five test lines, and the tester only needs to circularly connect the equipment into the test system on the five test lines and click to test. The production efficiency is improved and the labor cost is reduced.
5. The invention realizes the automatic test of the wireless board card, the test process does not need human intervention, the test is automatically executed, and the test report is automatically generated and filed after the test is finished.
Drawings
FIG. 1 is a schematic diagram of the system architecture of the present invention;
FIG. 2 is a block diagram of the construction of a dual path adjustable attenuator of the present invention;
FIG. 3 is an overall flow diagram of the present invention;
FIG. 4 is a block flow diagram of a power and attenuation accuracy test unit of the present invention;
fig. 5 is a block flow diagram of the throughput testing unit 1 of the present invention;
fig. 6 is a flow chart of the throughput test unit 2 of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms than those specifically described herein, and it will be apparent to those skilled in the art that many more modifications are possible without departing from the inventive concepts herein, and it is therefore intended that this invention not be limited to the specific embodiments disclosed below.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The automatic test device of the wireless board card based on throughput measurement comprises a wireless board card test tool, equipment to be tested, an auxiliary test computer and a test computer;
the wireless board card test tool comprises a management type POE switch, a switching power supply, a wireless board card (source), a double-path adjustable attenuator, an attenuator 1 and an attenuator 2;
the wireless board card test tool externally provides 3 paths of gigabit Ethernet interfaces, 1 path of RS232 interfaces, 2 paths of radio frequency interfaces and 1 path of 220V power supply interfaces;
the 3-path gigabit Ethernet interface is connected with external wireless board card equipment to be tested, an auxiliary test computer and a test computer, and is internally connected with a management type POE switch;
the 1-path RS232 interface is connected with an external test computer, and the interior of the 1-path RS232 interface is connected with two paths of adjustable attenuators;
the 2-path radio frequency interface is connected with a radio frequency interface of an external wireless board card to be tested, and the interior of the 2-path radio frequency interface is connected with a radio frequency interface of a two-path adjustable attenuator;
the 1-path 220V power supply interface is connected with an external 220V alternating current power supply, and the interior of the 1-path 220V power supply interface is connected with a power supply module and used for supplying power to the wireless board card test tool;
wireless integrated circuit board test fixture constitute the device and include: the system comprises a case, a switching power supply, a management type POE switch, a wireless board card (source), a double-path adjustable attenuator, an attenuator 1 and an attenuator 2;
the switch power supply is a two-way switch power supply, one way of the switch power supply is connected with the management type POE switch to provide DC48V power supply for the management type POE switch, and the other way of the switch power supply is connected with the two-way adjustable attenuator to provide DC12V power supply for the management type POE switch;
the management type POE switch is characterized in that a G0/0/1 interface is connected with a wireless board to be tested, a G0/0/2 interface is connected with a test computer, a G0/0/3 interface is connected with an auxiliary test computer, a G0/0/4 interface is connected with a wireless board (source), port vlan division is performed, G0/0/1 is communicated with G0/0/2, G0/0/3 is communicated with G0/0/4, G0/0/1 is isolated from G0/0/3 and G0/0/4, and G0/0/2 is isolated from G0/0/3 and G0/0/4;
two radio frequency ports of the wireless board card (source) are connected with two adjustable attenuators, and two radio frequencies of the two adjustable attenuators are respectively connected with the attenuator 1 and the attenuator 2;
the dual-path adjustable attenuator consists of a power management unit, a processor, a serial port unit, a radio frequency attenuation unit and a serial-parallel conversion unit;
the automatic test device and method of the wireless board card based on the throughput measurement comprises the following steps:
1) an operator connects the device to be tested with an Ethernet port and a radio frequency interface of the wireless board card test tool, and runs automatic test system software after connection is completed;
2) manually selecting a test mode, and clicking to start testing;
3) the testing computer continuously detects the information of the equipment to be tested at the Ethernet interface, the equipment to be tested establishes Tcp connection with the equipment to be tested after being started, and then enters the next link;
4) the testing computer detects the wireless connection state of the equipment to be tested, and enters power and attenuation precision testing after the wireless connection is successfully established;
5) after the success and attenuation precision tests are finished, a throughput test is carried out, the test computer controls the two-way adjustable attenuator to carry out power adjustment, and throughput values of different received signal strengths are tested;
6) and (5) completing automatic testing and generating a test report.
The test mode comprises a conventional test mode and a complete test mode, and the conventional test mode only carries out throughput test with 20MHz bandwidth, has the advantages of short test time and suitability for testing goods in batches; the complete test mode can test the throughput of 20MHz, 40MHz and 80MHz bandwidth, and has the advantages of wide test range, long test time and suitability for first-time online product test after firmware upgrade or hardware change.
The power and attenuation precision test comprises the following steps:
1) test computer reading wireless board card (source) access equipment signal level value P1、P2Computing device level PHPerpendicular PVPower value, PH＝P1+LH，PV＝P2+LV；
2) The test computer controls the internal attenuation of the tested wireless board card equipment to be 5dB, reads the signal level value of the access equipment of the wireless board card (source), calculates the 5dB attenuation error and records the 5dB attenuation error;
3) the test computer controls the internal attenuation of the tested wireless board card device to 10dB, reads the signal level value of the access device of the wireless board card (source), calculates the 10dB attenuation error and records the 10dB attenuation error;
4) the test computer controls the internal attenuation of the tested wireless board card equipment to be 15dB, reads the signal level value of the access equipment of the wireless board card (source), calculates the 15dB attenuation error and records the 15dB attenuation error;
5) the test computer controls the internal attenuation of the tested wireless board card equipment to be 20dB, reads the signal level value of the access equipment of the wireless board card (source), calculates the 20dB attenuation error and records the 20dB attenuation error;
the spitting test comprises the following steps:
1) test computer reading wireless board card (source) access equipment signal level value P1、P2The test computer writes attenuation values into the two-way adjustable attenuator and tests the throughput when the received signal strength is-50 dBm;
2) the test computer writes attenuation values into the two-way adjustable attenuator and tests the throughput when the received signal strength is-60 dBm;
3) the test computer writes attenuation values into the two-way adjustable attenuator and tests the throughput when the received signal strength is-70 dBm;
4) the test computer writes attenuation values into the two-way adjustable attenuator and tests the throughput when the received signal strength is-80 dBm;
the generated test report is characterized in that: when the test report is generated, the test computer compares all test results with a preset threshold value, highlights the unqualified test items in the report, and directly gives a conclusion whether the test is passed or not.
The WLAN integrated tester is usually used in radio frequency module development departments, product verification departments and certification institutions for product full-function index testing or professional certification detection, and the tester has abundant test tabs, high test precision and very high price. At present, no special test instrument exists in the production test link of the wireless board card, a powerful WLAN comprehensive tester can only be selected under normal conditions, excessive matching of test resources causes serious resource waste, and meanwhile, the construction of test lines in a production workshop is restricted due to the high cost factor of the instrument, and only 1 or 2 test lines are usually constructed in one production workshop, so that the productivity of the wireless board card cannot be improved. The invention aims to provide a wireless board test tool scheme which is suitable for a production test link and can effectively verify the radio frequency performance of a product. The main test indexes include radio frequency emission power, and the throughputs under the receiving sensitivities of-50 dBm, -60dBm, -70dBm and-80 dBm with attenuation accuracies of 5dB, 10dB, 15dB and 20 dB. The technical specification test is passed, and the factory requirements can be met.
As shown in fig. 1, the device provided in the embodiment of the present invention is used for automatically testing the performance index of a wireless board card in a production link. The wireless board card automatic testing device based on throughput measurement comprises a testing computer, an auxiliary testing computer, a wireless board card testing tool and equipment to be tested. The test computer is used for controlling the whole test process, and performing data statistics and analysis and data storage operation; the test computer is connected with the tested equipment through the Ethernet by means of the wireless board test tool, and the test computer is connected with the wireless board test tool through an RS232 interface. The auxiliary test computer is used for auxiliary test of the throughput of the link, an endpoint software tool is operated on the auxiliary computer, and an IxChariot software tool is operated on the test computer, so that the throughput test of the wireless link of the two computers can be realized; the auxiliary computer is connected with the wireless board card (source) through the Ethernet by means of the wireless board card test tool. The wireless board test tool is used for connecting a wireless board to be tested with a radio frequency interface of the wireless board (source), a group of 65dB constant value attenuation values are added on a radio frequency link of the section, and meanwhile, two paths of adjustable attenuators are accessed for throughput tests with different receiving sensitivities; the wireless board test tool connects the test computer with the two-way adjustable attenuator through the RS232 serial port, establishes connection between the test computer and the wireless board to be tested through the Ethernet, establishes radio frequency connection between the wireless board to be tested and the wireless board (source), and establishes connection between the wireless board (source) and the auxiliary test computer through the Ethernet, so that data interaction between the test computer and each module in the automatic test process is realized. After the production line deployment of the test system is completed, the external wiring of the whole test system only needs the wiring of the tested device part to be connected in the later period, and the wiring of other parts is all completed and fixed connection. In the process of executing the automatic test, test system software runs in a test computer and is used for controlling the test process of the whole test system, the test computer configures the channel bandwidth of the wireless board card (source) and the equipment to be tested through an Ethernet port according to the test process, the test computer configures the attenuation value of the two-way adjustable attenuator through an RS232 serial port according to the test process, and the test computer starts IxChariot software and calls a test script. A fixed attenuator and a two-way adjustable attenuator are connected in series in two radio frequency links of equipment to be tested and a wireless board card (source) on a radio frequency link, the fixed attenuator is used for introducing a fixed attenuation value into the radio frequency link, remote communication between the equipment to be tested and the wireless board card (source) is simulated by artificially introducing the attenuation value, the two-way adjustable attenuator is an attenuation device with controllable attenuation value, and throughput tests with different signal strengths are completed by executing attenuation dynamic adjustment attenuation values written by test calculation.
As shown in fig. 2, the structural composition of the two-way adjustable attenuator of the present invention is described, and the power management unit is the power supply part of the whole module and supplies power to each internal device; the serial port chip is connected with the processor chip and used for connecting and controlling the two-way adjustable attenuator by an external computer; the processor is connected with 4 74HC595 chips and used for controlling the level output of 24 IO ports in 4 groups, each 74HC595 chip is connected with an HMC425LP3 chip, and the level of 6 IO ports respectively corresponds to the attenuation values of 0.5, 1, 2, 4, 8 and 16dB of the control chip, so that the step of 31.5dB @0.5dB of the radio frequency attenuation range of each group of HMC425LP3 is realized; the two-way adjustable attenuator on a radio frequency link is provided with 2-way radio frequency communication, 2 HMC425LP3 chips are connected IN series on RF1 IN and RF1 OUT links to provide attenuation up to 63dB, and 2 HMC425LP3 chips are connected IN series on RF2 IN and RF2 OUT links to provide attenuation up to 63 dB. The main function of the two-way adjustable attenuator is to control the RF1 link and the RF2 link to output target attenuation values; the 74HC595 chip is a displacement buffer with 8-bit serial input and parallel output, and mainly has the functions of saving IO pins of a processor, expanding and controlling 32 DO outputs at the rear end through 3 DO pins of the processor, and actually using 24 DO pins, thereby realizing the control of 4 groups of HMC425LP3 attenuation chips; the HMC425LP3 attenuation chip mainly plays a role in realizing dynamic attenuation adjustment of a radio frequency link by writing high and low levels of 6 DI pins of the HMC425LP3 attenuation chip; after the attenuation value enters the dual-path adjustable attenuator processor through the RS232 serial port, the processor compares the attenuation value, when the attenuation value is less than or equal to 31.5dB, the RF1 link only enables the 1# attenuation chip, the RF2 link only enables the 3# attenuation chip, the Q0, Q1, Q2, Q3, Q4 and Q5 pins of the 74HC595 chip correspondingly control the attenuation values of 0.5, 1, 2, 4, 8 and 16dB of the HMC425LP3 attenuation chip in sequence, the pin of the HMC425LP3 attenuation chip executes attenuation when being at a low level, the processor is responsible for calculating the high and low levels of the Q0, Q1, Q2, Q3, Q4 and Q5 of the 74HC595 chip and executes writing, the writing sequence is started from the Q0 of the 4#74HC595 chip, and ended from the Q7 of the 1#74HC595 chip. When the attenuation value entering the processor through the RS232 serial port is larger than 31.5dB, the attenuation value of 31.5dB is written into the attenuation chip 1# of the RF1 link (the pin of the chip is all input with low level), the attenuation value of 31.5dB is written into the attenuation chip 3# of the RF2 link, the attenuation chip 2# of the RF1 link is written into (input value-31.5) dB attenuation value, and the attenuation value of 3# of the RF2 link is written into (input value-31.5) dB attenuation value. The two-path adjustable attenuator realizes the attenuation adjusting range of 0-63 dB of the two-path radio frequency link by the method, and the attenuation adjusting step is 0.5 dB.
As shown in fig. 3, it is an overall flowchart of an automatic test apparatus for a wireless board based on throughput measurement, and specific operation steps are described as follows;
1) before starting testing, an operator needs to connect an external Ethernet jumper of a G0/0/1 interface of a wireless board card testing tool with a wireless board card to be tested, and connect an N-RF1 interface and an N-RF2 interface of the wireless board card testing tool with an RF1 interface and an RF2 interface of the wireless board card to be tested through radio frequency connecting cables respectively;
2) after external wiring of the test equipment is completed, running test system software on a test computer, inputting a product serial number of the equipment to be tested, wherein the product serial number is a unique identifier of a product identity, the software does not support continuous downward running under the condition that the product serial number is default, and the input mode of the product serial number supports two input modes of manual input and code scanning gun code scanning automatic input;
3) after the writing of the serial number of the product is finished, a tester needs to select a test mode of the test, the test mode is divided into a complete mode and a conventional mode, the complete mode is usually used when the first online product test is carried out after the firmware of the wireless board card is upgraded or the hardware of the wireless board card is modified, and the test is complete due to long time consumption; the test mode is a general test mode of a conventional product, and the time consumption is short, and the number of test items is relatively small; the complete mode and the conventional mode are only different in a throughput testing unit part, and other testing processes are completely the same; after the mode selection is completed, clicking to start testing;
4) the system starts testing, the testing computer scans the tested equipment on the Ethernet interface in a cycle of 10s for 10 times in total, if the equipment is not scanned, error popup is carried out on the testing computer, automatic testing is terminated, and an operator can check and debug the wiring of the equipment and then carry out testing again; if the equipment is scanned, the test computer establishes a TCP connection with the tested equipment;
5) the testing computer reads the wireless connection list of the tested equipment once in a cycle of 10s, the wireless connection list is read for 3 times in total, if the wireless connection list cannot be read for 3 times, the testing computer pops up an error window, the testing equipment is defective products and needs to be screened out, and if the wireless connection list of the tested equipment is searched by the testing computer, the next testing process is started;
6) after entering the power and attenuation precision testing unit, the testing computer tests the output power and the power ATT regulating part of the wireless board card, and whether the Ethernet interface communication, the radio frequency transmitting power and the ATT attenuation precision of the wireless board card are qualified or not can be verified through the testing of the unit.
7) After completing all test items of the success and attenuation precision test units, the method enters a throughput test unit, 2 throughput test units are defined, and a throughput test unit 1 performs throughput tests with different receiving signal strengths of 20MHz bandwidth and executes the throughput tests in a conventional test mode; the throughput testing unit 2 performs throughput tests of different received signal strengths of 20MHz, 40MHz and 80MHz bandwidths, and executes the tests in a complete test mode; the unit tests the data transmission capability of the wireless board card under the conditions of different receiving sensitivities, and indirectly verifies the switching response of the radio frequency modulation grade.
8) After all test items of the throughput test unit are completed, the test computer restores all parameters for controlling the tested equipment to factory default values, and the test computer generates a complete test report according to the test result; the invention supports the preset writing of each test result threshold, the partial threshold is written in by developers in advance, and production testers have no modification authority; when the test computer generates the test report, the test result is directly compared with a preset threshold value, and a test conclusion is output, so that an operator can directly select a defective product according to the test conclusion of the test report;
9) after the test is finished, replacing the equipment for the next round of test;
10) the running time of the whole automatic test process is about 30 minutes, and the time for replacing the tested equipment by an operator can be completely controlled within 2 minutes, so that one operator can easily monitor 5 test lines simultaneously.
As shown in fig. 4, it is a flow chart of a power and attenuation accuracy testing unit of an automatic testing apparatus for a wireless board card based on throughput measurement, and the specific operation steps are described as follows;
1) entering a power and attenuation precision test unit, communicating with a wireless board card (source) by a test computer, and reading an access equipment signal level value P in a wireless connection list of the wireless board card (source)1、P2The signal level values of the horizontal and vertical polarization directions of the tested device are detected by the radio frequency interface of the wireless board card (source);
2) and calculating power values, wherein the calculation formula of the output power values of the two radio frequency ports of the tested device is as follows:
PH＝P1+LHPV＝P2+LV
P1、P2reading the signal level value for the last step of the test computer;
LH、LVthe attenuation values on the two radio frequency links are the sum of the attenuations generated by the attenuator and the radio frequency connector; the attenuation value is designed to be 70dB which is the attenuation value of the attenuator (65dB) + the cable loss (5dB), but in the actual use process, the attenuation value changes due to factors such as the abrasion of the test cable, so the link attenuation value of the test system needs to be calibrated by the network analyzer every week, and the calibration result is written into the test systemTesting a computer system.
3) The power value P calculated in the last stepH、PVStoring the test data into a test computer;
4) the testing computer writes a 5dB attenuation value into the radio frequency link of the tested equipment, and reads the signal level value P of the access equipment in the wireless connection list of the wireless board card (source)11、P12；
5) And calculating 5dB attenuation errors, wherein the attenuation errors of two radio frequency ports of the tested device are calculated according to the formula:
△11＝P1-P11-5 △12＝P2-P12-5
6) the test computer writes a 5dB attenuation value into a radio frequency link of the tested equipment, and reads an access equipment signal level value P in a wireless connection list of a wireless board card (source)21、P22：
7) And calculating 10dB attenuation errors, wherein the attenuation error calculation formula of two radio frequency ports of the tested device is as follows:
△21＝P1-P21-10 △22＝P2-P22-10
8) the test computer writes a 5dB attenuation value into a radio frequency link of the tested equipment, and reads an access equipment signal level value P in a wireless connection list of a wireless board card (source)31、P32：
9) And calculating 15dB attenuation errors, wherein the attenuation errors of two radio frequency ports of the tested device are calculated according to the formula:
△31＝P1-P31-15 △32＝P2-P32-15
10) the testing computer writes a 5dB attenuation value into the radio frequency link of the tested equipment, and reads the signal level value P of the access equipment in the wireless connection list of the wireless board card (source)41、P42：
11) And calculating 20dB attenuation errors, wherein the attenuation errors of two radio frequency ports of the tested device are calculated by the following formula:
△41＝P1-P41-20 △42＝P2-P42-20
12) storing the 5dB stepping attenuation precision test result into a test computer;
13) the test computer clears the radio frequency link attenuation value of the tested equipment to be 0;
14) and after the power and attenuation precision test is finished, entering the next test unit.
As shown in fig. 5, it is a flow chart of the throughput testing unit 1 of the automatic testing apparatus for wireless board based on throughput measurement, and the specific operation steps are described as follows;
1) entering the throughput testing unit 1, the testing computer will communicate with the wireless board (source) and read the signal level value P of the access device in the wireless connection list of the wireless board (source)1、P2；
2) The target level value of the radio frequency signal of the first throughput test is-50 dBm, and the attenuation values which need to be written into the two-way adjustable attenuator and are calculated by the test computer are respectively L1H＝P1+50、L1V＝P2+50；
3) The test computer writes attenuation values L into a radio frequency 1 link and a radio frequency 2 link of the double-path adjustable attenuator through serial ports respectively1H、L1VAn attenuation value;
4) the test computer calls a throughput test script of IxChariot to execute the throughput test;
5) the test computer writes attenuation values L into a radio frequency 1 link and a radio frequency 2 link of the double-path adjustable attenuator through serial ports respectively1H+10、L1V+10 attenuation values;
6) the test computer calls a throughput test script of IxChariot to execute the throughput test;
7) the test computer writes attenuation values L into a radio frequency 1 link and a radio frequency 2 link of the double-path adjustable attenuator through serial ports respectively1H+20、L1V+20 attenuation values;
8) the test computer calls a throughput test script of IxChariot to execute the throughput test;
9) test computer is to adjustable decay of double-circuit through serial portsRespectively writing attenuation values L into a radio frequency 1 link and a radio frequency 2 link of the device1H+30、L1V+30 attenuation values;
10) the test computer calls a throughput test script of IxChariot to execute the throughput test;
11) after the fourth throughput test is finished, the test computer restores the parameters of the tested equipment to factory settings through the Ethernet interface;
12) and the testing computer records the testing result, the throughput testing is finished, and the next process is entered.
As shown in fig. 6, it is a flowchart of a throughput testing unit 2 of an automatic testing apparatus for a wireless board card based on throughput measurement, and different from the throughput testing unit 1 that only performs throughput testing under a channel bandwidth of 20MHz, the throughput testing unit 2 performs throughput testing of channel bandwidths of 20MHz, 40MHz, and 80MHz, and specific operation steps are described as follows;
1) the testing computer modifies the channel bandwidth of the wireless board card (source) into 80MHz through the Ethernet port;
2) the testing computer modifies the channel bandwidth of the tested wireless board card into 80MHz through the Ethernet port;
3) waiting for 10s, and reserving radio frequency re-networking time;
4) executing the test flow of the throughput test unit 1;
5) the testing computer modifies the channel bandwidth of the wireless board card (source) into 40MHz through the Ethernet port;
6) the testing computer modifies the channel bandwidth of the tested wireless board card into 40MHz through the Ethernet port;
7) waiting for 10s, and reserving radio frequency re-networking time;
8) executing the test flow of the throughput test unit 1;
9) the testing computer modifies the channel bandwidth of the wireless board card (source) into 20MHz through the Ethernet port;
10) the testing computer modifies the channel bandwidth of the tested wireless board card into 20MHz through the Ethernet port;
11) waiting for 10s, and reserving radio frequency re-networking time;
12) executing the test flow of the throughput test unit 1;
13) and ending the throughput test and entering the next flow.
The automatic test device and method for the wireless board card based on throughput measurement realize the test of the output power and the radio frequency attenuation precision of the wireless board card based on the self-carried power detection function of the radio frequency chip of the wireless board card, directly verify the transmission capability of the wireless board card based on the throughput test under different signal levels, and indirectly verify the switching response of the radio frequency modulation level along with the intensity of the received signal. Compared with the existing test scheme adopting the WLAN comprehensive tester, the invention has the defects that the test error is relatively large, but the original test requirement of the production test link on the screening of the defective products can be completely met; the method has the advantages that the deployment cost of the test device is only one percent of that of the existing test scheme, the on-duty threshold of a user is low, the operation is simple and easy to use, the test process is fully automatic, one operator can simultaneously operate the test work of five test production lines, and the personnel input cost is reduced by more than 50%. The device completely solves the problem that the production capacity of the wireless board card is limited because the conventional wireless board card test instrument is expensive, the operator entry threshold is high, and a plurality of test production lines cannot be deployed in a production workshop.
Claims (9)
1. Wireless integrated circuit board automatic testing arrangement based on throughput measurement, its characterized in that includes: the wireless board card testing tool comprises a wireless board card testing tool, a testing computer and an auxiliary testing computer, wherein the testing computer and the auxiliary testing computer are respectively connected with the wireless board card testing tool;
wherein, wireless integrated circuit board test fixture includes: management type POE switch, wireless integrated circuit board, double-circuit adjustable attenuator, attenuator group that the order is connected, management type POE switch still links to each other with test computer, auxiliary test computer and test equipment respectively, attenuator group links to each other with test equipment, double-circuit adjustable attenuator links to each other with test computer, still includes the switching power supply who links to each other with management type POE switch and double-circuit adjustable attenuator respectively.
2. The automatic test device for wireless board cards based on throughput measurement according to claim 1, wherein the attenuator group comprises a first attenuator and a second attenuator, and two ends of each attenuator are respectively connected with the device to be tested and the two-way adjustable attenuator.
3. The automatic test device for the wireless board card based on the throughput measurement as claimed in claim 1, wherein the dual-path adjustable attenuator comprises a processor, a serial port unit, a radio frequency attenuation unit, a serial-parallel conversion unit and a power management unit, the processor, the serial port unit, the radio frequency attenuation unit and the serial-parallel conversion unit are sequentially connected, the power management unit is connected with the processor, the processor is connected with a test computer through the serial port unit, the radio frequency attenuation unit is connected with the wireless board card through a radio frequency interface of the radio frequency attenuation unit, the serial-parallel conversion unit is connected with the attenuator group, and the power management unit is connected with a switching power supply.
4. The automatic test method of the wireless board card based on the throughput measurement is characterized by comprising the following steps:
selecting a test mode, detecting information of the equipment to be tested by a test computer and establishing TCP connection with the information;
the testing computer detects the wireless connection state of the equipment to be tested, and after the wireless connection is successfully established, the power and attenuation precision of the equipment to be tested are tested;
after the success and attenuation precision tests are completed, the testing computer controls the two-way adjustable attenuator to adjust the power and tests the throughput of the equipment to be tested.
5. The method of claim 4, wherein the test patterns include a normal test pattern and a full test, the normal test pattern only performs throughput tests with 20MHz bandwidth, and the full test pattern performs throughput tests with 20MHz, 40MHz, and 80MHz bandwidth.
6. The method of claim 4 for automatically testing a wireless board based on throughput measurement, wherein the power and attenuation accuracy test comprises the steps of:
test computer reading wireless board card access device signal level value P1、P2Calculating the horizontal power value P of the deviceHVertical power value PV，PH＝P1+LH，PV＝P2+LVWherein L isH、LVIs the attenuation value on two radio frequency links;
the test computer controls the attenuation precision value a set by the internal attenuation of the tested equipment, and the test computer reads the signal level value P of the access equipment of the wireless board card11、P12And calculating the attenuation errors of two radio frequency ports of the tested equipment, delta11＝P1-P11-a，△12＝P2-P12-a；
The last step is executed for a plurality of times to obtain the attenuation error delta of two radio frequency ports of a plurality of groups of tested devicesn1＝P1-Pn1-n*a，△n2＝P2-Pn2And n, n is the test times, and the attenuation error and the attenuation precision value a of each group are recorded to finish the test.
7. The method of claim 6 wherein the attenuation accuracy value a is 5 dB.
8. The method for automatically testing a wireless board based on throughput measurement according to claim 4, wherein the throughput test comprises the following steps:
test computer reading wireless board card access device signal level value P1、P2Setting the target level value of the radio frequency signal of the first throughput test as A, and the attenuation values which need to be written into the two-way adjustable attenuator and are calculated by the test computer as L1H＝P1+A、L1V＝P2+A；
The test computer writes attenuation values L into the two-way adjustable attenuator1H+ B and L1V+ B, testing the throughput at the moment, wherein B is a set value;
the last step is executed for a plurality of times, and the test computer writes attenuation values L into the two-way adjustable attenuator1H+ n B and L1VAnd n is the test times, and the throughput of each group is recorded to finish the test.
9. The method of claim 8, wherein the target level value a is-50 dBm, and the set value B is-10 dBm.
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| US20140355457A1 (en) * | 2013-05-31 | 2014-12-04 | Arcadyan Technology Corporation | System for testing wireless signals and method for establishing the same |
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