CN103901047A - Method and system for detecting welding quality of antenna of wireless product - Google Patents
Method and system for detecting welding quality of antenna of wireless product Download PDFInfo
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- CN103901047A CN103901047A CN201410080499.1A CN201410080499A CN103901047A CN 103901047 A CN103901047 A CN 103901047A CN 201410080499 A CN201410080499 A CN 201410080499A CN 103901047 A CN103901047 A CN 103901047A
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Abstract
The invention provides a method and a system for detecting welding quality of an antenna of a wireless product based on RSSI (Received Signal Strength Indicator) test. The method receives an RSSI value transmitted by the wireless product through a client and estimates the antenna welding state according to the RSSI value. The system comprises the to-be-detected wire product arranged in a screening box, an antenna gain stabilized wireless network card and a computer; wherein the wireless network card is arranged in the computer; the antenna of the wireless network card is arranged in the screening box. The method and the system of detecting the welding quality of the antenna of the wireless product can effectively and rapidly estimate the antenna performance by testing an RSSI indicator and is particularly applicable to product test of large scale production in a factory; the test environment is simplified, the test time is shortened, the test efficiency is improved and the performances of the antenna can be well tested.
Description
Technical field
The present invention relates to detect method and the detection system field of wireless product antenna welding quality.
Background technology
When wireless terminal product use is more and more wider, consumer is also more and more higher to the reliability requirement of wireless product quality, and wireless terminal manufacturer also more and more payes attention to the antenna performance of wireless product.Therefore, in wireless product production test procedure, need to check the antenna of product whether to weld in order to ensure the quality of products, what be commonly used is the method for test products handling capacity: in shielded box, add decay by antenna end, analog subscriber uses state, by the handling capacity of test products, judge the performance condition of antenna, thereby determine whether antenna welds.Run handling capacity environment but the method need to build, and test process expends time in.
Be the detection system usually adopting when wire bonding detected in wireless antenna product day at present as shown in Figure 1, build the instrument and equipment that environment needs: product to be measured, USB network interface card (network interface card antenna end serial connection attenuator), shielded box, two of PCs, USB extended line, netting twine.Here product to be measured is exactly to be welded with the radio receiver of antenna as wireless network card or wireless aps main frame etc., below the explanation as an example of the antenna that welds on wireless network card example, antenna is welded to and on wireless network card, carries out Performance Detection and judge whether to weld.
Testing procedure comprises:
1, product to be measured and network interface card are placed in shielded box.
2, product netting twine to be measured is connected with PC1; The communication that is connected with exterior PC 2 by interface extension line of USB network interface card.
3, network interface card scans SSID and logs in the networking of product to be measured.
4, by running handling capacity between PC1 and PC2.
5, according to the mean value of handling capacity, the result of output antenna performance.
Method of testing above and test macro need two PCs, and PC1 wherein need use netting twine and product to be measured to be linked, in addition, test duration aspect, the method and this system are used throughput testing approach, normally the handling capacity mean value of 20 ~ 30 seconds.
Summary of the invention
The present invention is the antenna performance overcoming on the mode testing product of current employing test products handling capacity, need more complicated detection system and the deficiency of the test duration of long period, the invention provides a mode based on RSSI and detect the method and system of the antenna welding quality being installed on product.
Technical scheme of the present invention is: detect the method for wireless product antenna welding quality, described wireless product comprises wireless router, wireless network card; RSSI value when the method is the wireless signal by utilizing a tested wireless product of client with wireless network card judges wireless product antenna welding quality, comprises the following steps:
Under the environment without electromagnetic interference (EMI), utilize a client with known wireless network card to sign in in the network of wireless product to be measured;
Read the RSSI value receiving on known wireless network card;
According to RSSI value, the welding situation result by antenna in the wireless product of situation output below:
Described RSSI value is in normal range, and wireless product to be measured sky wire bonding is normal;
Described RSSI value is less than normal range value, and wireless product antenna to be measured is welded with quality problems, need to do over again.
Further, in the method for above-mentioned detection wireless product antenna welding quality: the antenna of described wireless network card and the antenna of wireless product to be measured are isotropic antenna.
Further, in the method for above-mentioned detection wireless product antenna welding quality: the receiving gain of the antenna of described wireless network card keeps stable.
Further, in the method for above-mentioned detection wireless product antenna welding quality: the step that described client signs in in the network of wireless product to be measured comprises:
Wireless network card scanning SSID, searches after wireless product SSID to be measured, signs in in the network of wireless product to be measured by this SSID.
The present invention also provides a kind of system that detects wireless product antenna welding quality, comprises the wireless product to be measured being arranged in shielded box, the wireless network card of Antenna Gain Stabilization, and computing machine, described wireless network card is arranged in computing machine; The antenna of described wireless network card is arranged in described shielded box.
Further, in the system of above-mentioned detection wireless product antenna welding quality: described wlan card antenna end is serially connected with attenuator.
Further, in the system of above-mentioned detection wireless product antenna welding quality: described wireless network card is USB network interface card, be arranged in described shielded box, extend and be installed in described computing machine by USB.
The method and system of above-mentioned detection wireless product antenna welding quality, by test RSSI index, can be effective, judge efficiently the performance of antenna, be especially applicable to the product test in factory's batch production.Simplify test environment, shortened the test duration, improved testing efficiency, well the properties of antenna.
Below in conjunction with specific embodiment, the present invention is described in more detail.
Accompanying drawing explanation
Fig. 1 is the system architecture diagram that detects wireless product antenna welding quality in prior art.
Fig. 2 is the structured flowchart of system of the present invention.
Embodiment
Embodiment 1, the present embodiment is a kind of detection system of welding situation of antenna of producer's factory testing wireless product of producing wireless product, as shown in Figure 2, the instrument and equipment that building environment needs comprises wireless product to be measured, this wireless product generally refers to wireless aps etc. at present, known USB wireless network card, at USB wlan card antenna end serial connection attenuator, shielded box, AP to be measured and known USB wireless network card are all arranged in shielded box, known USB wireless network card is linked in computing machine by USB extended line, the driver of USB wireless network card is installed on computers.In the present embodiment, wireless product to be measured can be wireless network card or other wireless aps.
Use the testing process of native system as follows:
First-selected, AP to be measured and network interface card are placed in shielded box.
Shielded box is can shield electromagnetic interference.AP to be measured and known network interface card, in shielded box, are guaranteed to known network interface card can be connected in the network of AP to be measured, protect the electromagnetic signal of AP to be measured interference-free, also avoid AP to be measured to disturb other equipment.Known network interface card is a kind of working properly stable wireless network card through test, can guarantee to be operated in normal condition in test process.
Then, USB network interface card is by interface extension line, communication is connected with outer PC.
USB network interface card, in shielded box, uses USB extended line to be connected with PC.PC installs the driver of network interface card in advance additional, can read and control at PC end like this command signal of network interface card end.
While starting to detect, network interface card scanning SSID also logs in the networking of product to be measured.
Known network interface card, as the wireless client of PC, is searched for the SSID of AP to be measured, logs in the network of AP to be measured.Form take AP to be measured as service end the network system that network interface card and pc are client.
In test process, by PC, read the RSSI that network interface card termination is received.
Network interface card logs on after the network of product to be measured, and product to be measured can receive by known network interface card by the signal of antenna transmission.Now on PC, read network interface card termination and receive the data of signal intensity RSSI.
Finally, according to the value of RSSI, output test mode result.
Product to be measured, by the power of antenna transmission, after decay, can calculate according to electromagnetic transmission is theoretical, and calibrate by the state of actual measurement normal product in air, determines in advance the normal range of receiving of RSSI value.
In the present embodiment, fundamental purpose is whether the sky wire bonding of the wireless products such as detection AP is normal, other parts in AP itself all just start to be assembled into wireless product after detecting normally, therefore, the wireless products such as AP to be measured only weld normally, just can receive RSSI value in the reasonable scope at known wireless network card end, if it is undesired to weld, during such as rosin joint, the gain of antenna will be very little, and decay will be very large.
The RSSI value of test is in normal range, and product to be measured is normal condition.
The RSSI value of test is less than normal value, and the power of product to be measured is on the low side, and quality problems appear in a day wire bonding, need to do over again.
Embodiment has adopted some antenna of relatively commonly using and network interface cards above, in the present embodiment, it is convenient calculating and understanding that the antenna of wireless network card and the antenna of wireless product to be measured are isotropic antenna, and in its tangible shielded box, space-constrained place does not need yet few of error of regulation like this.In addition, USB network interface card is the network interface card of often using, and is easy to obtain in embodiment, and it is also convenient to install, other wireless network card also can be used for the welding situation of surveying equally in fact, and we only need to just can complete this test by accessing the wireless network card of test product.
The ultimate principle of the method in the present embodiment is:
Electromagnetic wave transmits in space, its intensity decays because of the diffusion of energy, these we can be referred to as the space length that free-space propagation loss L establishes two antennas be R, the power of emitting antenna is Pt, receiving antenna power is Pr, free-space propagation loss L can be defined as so: L=10lg(Pt/Pr), in the time that emitting antenna and receiving antenna are isotropic antenna.So
L=32.4+20lgR+20lgf （1.1）
Wherein the unit of R is Km, and the unit of f is Mhz.
The signal intensity i that network interface card receives, emitting antenna end line damages Lt, receiving antenna line loss Lr, the gain that Gt is emitting antenna, the gain that Gr is receiving antenna.
i=Pt+Gt+Gr-L-Lt-Lr （1.2）
And in test environment on actual production line, for (distance R is less) analog subscriber environment for use in small space, we also need by connect attenuator Ll on link, so we can be expressed as in test macro:
i=Pt+Gt+Gr-L-Lt-Lr-Ll （1.3）
And the signal intensity i that network interface card receives is exactly RSSI value.
So, in our RSSI method of testing, build test environment, be exactly the emissive power of product to be measured after antenna for Pt+Gt, signal is received by being transferred to network interface card termination in the air, forms RSSI value.Gr, L, Lt, Lr, Ll is known quantity, sets up thus the corresponding relation of emissive power to be measured and RSSI.
Contrast the present embodiment and traditional two kinds of method of testings of method of testing:
Aspect environmental structure, tradition is used throughput testing approach, needs two PCs, and PC1 wherein need use netting twine and product to be measured to be linked; Method of testing in the present embodiment only needs a PC.So RSSI test mode has been simplified test environment, save and produced the limited production space of line.
Test duration aspect, tradition is used throughput testing approach, normally the handling capacity mean value of 20 ~ 30 seconds; RSSI method of testing reads RSSI value without 1 second, has shortened greatly the test duration.So RSSI method of testing shortens the test duration, this,, for improving testing efficiency in pipelining in producing, seems particularly important.
Claims (7)
1. detect a method for wireless product antenna welding quality, described wireless product comprises wireless router, wireless network card; It is characterized in that: RSSI value when the method is the wireless signal by utilizing a tested wireless product of client with wireless network card judges wireless product antenna welding quality, comprises the following steps:
Under the environment without electromagnetic interference (EMI), utilize a client with known wireless network card to sign in in the network of wireless product to be measured;
Read the RSSI value receiving on known wireless network card;
According to RSSI value, the welding situation result by antenna in the wireless product of situation output below:
Described RSSI value is in normal range, and wireless product to be measured sky wire bonding is normal;
Described RSSI value is less than normal range value, and wireless product antenna to be measured is welded with quality problems, need to do over again.
2. the method for detection wireless product antenna welding quality according to claim 1, is characterized in that: the antenna of described wireless network card and the antenna of wireless product to be measured are isotropic antenna.
3. the method for detection wireless product antenna welding quality according to claim 2, is characterized in that: the receiving gain of the antenna of described wireless network card keeps stable.
4. the method for detection wireless product antenna welding quality according to claim 1, is characterized in that: the step that described client signs in in the network of wireless product to be measured comprises:
Wireless network card scanning SSID, searches after wireless product SSID to be measured, signs in in the network of wireless product to be measured by this SSID.
5. a system that detects wireless product antenna welding quality, is characterized in that: comprise the wireless product to be measured being arranged in shielded box, and the wireless network card of Antenna Gain Stabilization, computing machine, described wireless network card is arranged in computing machine; The antenna of described wireless network card is arranged in described shielded box.
6. the system of detection wireless product antenna welding quality according to claim 5, is characterized in that: described wlan card antenna end is serially connected with attenuator.
7. the system of detection wireless product antenna welding quality according to claim 5, is characterized in that: described wireless network card is USB network interface card, is arranged in described shielded box, is extended and is installed in described computing machine by USB.
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| CN105472383A (en) * | 2015-11-27 | 2016-04-06 | 深圳Tcl数字技术有限公司 | Performance detection method and system of television built-in dongle |
| CN105529522A (en) * | 2016-01-22 | 2016-04-27 | 希姆通信息技术（上海）有限公司 | Mobile terminal assembly detection method and antenna assembly detection method |
| CN105974211A (en) * | 2016-06-21 | 2016-09-28 | 广州视源电子科技股份有限公司 | Method and device for testing equipment antenna |
| CN106294035A (en) * | 2015-05-18 | 2017-01-04 | 深圳三诺信息科技有限公司 | A kind of PC controls test system and the method for testing of panel computer |
| CN106507395A (en) * | 2016-11-18 | 2017-03-15 | 上海斐讯数据通信技术有限公司 | A kind of Performance Test System of wireless extensions device and its method |
| CN108023646A (en) * | 2017-12-28 | 2018-05-11 | 金卡智能集团股份有限公司 | Antenna performance detecting system for intelligence instrument |
| CN108111238A (en) * | 2017-11-10 | 2018-06-01 | 大唐终端技术有限公司 | A kind of local area network antenna detection method and system |
| CN109495196A (en) * | 2019-01-03 | 2019-03-19 | 深圳市吉祥腾达科技有限公司 | MESH product wireless network bandwidth automatically switches characteristic test system and method |
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| CN106294035A (en) * | 2015-05-18 | 2017-01-04 | 深圳三诺信息科技有限公司 | A kind of PC controls test system and the method for testing of panel computer |
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| CN106507395A (en) * | 2016-11-18 | 2017-03-15 | 上海斐讯数据通信技术有限公司 | A kind of Performance Test System of wireless extensions device and its method |
| CN108111238A (en) * | 2017-11-10 | 2018-06-01 | 大唐终端技术有限公司 | A kind of local area network antenna detection method and system |
| CN108023646A (en) * | 2017-12-28 | 2018-05-11 | 金卡智能集团股份有限公司 | Antenna performance detecting system for intelligence instrument |
| CN108023646B (en) * | 2017-12-28 | 2024-03-26 | 金卡智能集团股份有限公司 | Antenna performance detection system for intelligent instrument |
| CN109495196A (en) * | 2019-01-03 | 2019-03-19 | 深圳市吉祥腾达科技有限公司 | MESH product wireless network bandwidth automatically switches characteristic test system and method |
| CN109495196B (en) * | 2019-01-03 | 2023-10-10 | 深圳市吉祥腾达科技有限公司 | System and method for testing wireless network bandwidth automatic switching characteristics of MESH product |
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