CN103051400A - In-band spurious emission testing method for sensor network node - Google Patents
In-band spurious emission testing method for sensor network node Download PDFInfo
- Publication number
- CN103051400A CN103051400A CN2012105596159A CN201210559615A CN103051400A CN 103051400 A CN103051400 A CN 103051400A CN 2012105596159 A CN2012105596159 A CN 2012105596159A CN 201210559615 A CN201210559615 A CN 201210559615A CN 103051400 A CN103051400 A CN 103051400A
- Authority
- CN
- China
- Prior art keywords
- signal analyzer
- sensor network
- spuious
- measured
- testing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses an in-band spurious emission testing method for a sensor network node. The in-band spurious emission testing method for the sensor network node is characterized in that a module to be tested is connected with a signal analyzer through an SMA (SubMiniature version A) interface, the module to be tested is connected with a PC (Personal Computer) through an RS232 serial port and the signal analyzer is connected with the PC through a GPIB/LAN (General Purpose Interface Bus/Local Area Network) interface. The in-band spurious emission testing method for the sensor network node has the advantages that not only can the optimization of the traditional in-band spurious emission testing system for the sensor network node be realized, but also the time for in-band spurious emission testing is greatly reduced, the complexity of the testing system is reduced and the testing cost is saved.
Description
Technical field
The present invention relates to a kind of wireless sensor network physical layer field tests, be specifically related to a kind of based on spuious method of testing in the sensor network nodes band of automatic control realization.
Background technology
Along with the develop rapidly of semiconductor technology and the communication technology, for the development of radio network technique provides the new motive force of development, radio network technique has become the study hotspot in each field day by day.Although IEEE 802.11b has become the main standard of WLAN, the networking cost of IEEE 802.11b is higher, is mainly used to build LAN (Local Area Network), and supports large batch of transfer of data.Radio network device simple and convenient in order to impel, that can use at any time emerges in multitude, and cheap price will play crucial effect, also is necessary to specify simultaneously the solution of a standard.The problem that this standard will solve is that the communication link of minimum discharge and the transceiver of low complex degree are kept in one of design.Its key problem is low-power consumption, designs and provide the application of low bandwidth, low rate cheaply.In great majority control was used, Wi-Fi/802.11 and bluetooth standard were not very desirable.
In order to satisfy low-power consumption, the demand of low-cost wireless network, the ieee standard committee has set up a new task groups in December, 2002, begin to formulate low rate Wireless Personal Network (LR-WPAN) standard, become IEEE 802.15.4, its task formulates exactly physical layer (PHY) and media are got involved key-course (MAC) standard, develop a kind of for fixing, the low complex degree of portable or mobile device, the low rate wireless network connection standard of low cost and low-power consumption, generally do not wait to 30 meters at 10 meters in indoor transmission range, can reach 150 meters at outdoor maximum transmission distance.According to the difference of application scenarios, be the several years useful life of battery.This standard has obtained official approval in October, 2003.
2006, IEEE 802.15.4 group issued IEEE 802.15.4b standard, and this standard can effectively be simplified IEEE 802.15.4 framework and improve interoperability, and then improved stiffness of system.This standard has been done special improvement and correction to IEEE 802.15.4, and will with its compatibility.Fuzzy concepts that new standard is clearer and more definite have reduced unnecessary complexity, increased the flexibility that safe key uses, and the frequency that some are new distribution are taken into account.The purpose of this modification is to make it and can coexists mutually by the equipment relevant with IEEE and other coexistence task groups with other, and at present, this standard is also in further developing and improving.
IEEE 802.15.4b(ZigBee) can be described as the brother of the same clan of bluetooth, its uses 2.4GHz wave band, adopts frequency hopping.Compare with bluetooth, simpler, speed is slower, power and expense are also lower.Its basic rate is 250kb/s, and when being reduced to 28kb/s, transmission range can expand 134 meters and the higher reliability of acquisition to.In addition, it can be networked with 254 nodes, and comparable bluetooth supports game, consumer electronics, instrument and home automation to use better.
In sum, IEEE 802.15.4b standard has remedied the vacancy of low cost, low-power consumption and low rate wireless communications market with its unique advantage, the present and the future, have more attentiveness and research and development strength and forward this piece field to.
Scramble testing system is with reference to the test mode of IEEE 802.15.4b, to the interior spuious testing authentication of carrying out of its band in the sensor network nodes band.Spuious in the band of existing test macro according to pertinent instruments measuring transducer network node, have complicated operation, test speed waits shortcoming slowly.
Summary of the invention
The object of the invention is to provide spuious method of testing in a kind of sensor network nodes band, and the problems such as test speed is slow, complicated operation that it can effectively solve improve testing efficiency.
In order to solve these problems of the prior art, technical scheme provided by the invention is:
Spuious method of testing in a kind of sensor network nodes band, module to be measured in the sensor network nodes band in the spuious method of testing links to each other with signal analyzer by the SMA interface, module to be measured links to each other with PC by the RS232 serial ports, signal analyzer links to each other with PC by the GPIB/LAN interface, and concrete method of testing comprises tells lower step:
I, PC switch to the analysis frequency of signal analyzer the frequency of channel to be measured by GPIB/LAN interface remote control signal analyzer;
II, PC be by GPIB/LAN interface remote control signal analyzer, and the originate mode with signal analyzer from start the time switches to spuious measurement pattern in the band;
III, PC send instruction for module to be measured by the RS-232 serial ports, can change in real time the working channel of module to be measured in test process, make module be in emission state;
IV, PC are by GPIB/LAN interface remote control signal analyzer, spuious test frequency and reference power in the band (definition measuring frequency and carrier frequency according to the Sensor Network physical layer differ above 3.5MHz, and reference power is the high-average power in test centre carrier frequency ± 1MHz bandwidth) is set;
V, PC read spuious test result in the modular belt to be measured by GPIB/LAN interface remote control signal analyzer.
For technique scheme, the inventor also has further optimization embodiment.
As optimization, in above-mentioned steps I, II, IV, the V, PC can pass through GPIB/LAN interface remote control signal analyzer.
As optimization, described signal analyzer is that Agilent N9020A vows spectrum analyzer.Agilent N9020A vows that spectrum analyzer has advantages of that wide RF analyzes bandwidth, high sampling rate and large memories, and it is the key of scramble testing system in the sensor network band.In addition, Agilent N9020A spectrum analyzer also provides the frequency coverage up to 13.6GHz, can meet the interior spuious test request of sensor network nodes band of various frequency requirement.In addition, Agilent N9020A also has the various control interface, and such as Ethernet control interface (LAN), GPIB control interface and RS232 control interface etc. can be realized Long-distance Control easily, realizes automatic measurement.
Described PC provides the tester to carry out the control of automatic test.
With respect to scheme of the prior art, advantage of the present invention is:
The invention describes spuious method of testing in a kind of sensor network nodes band, it is optimized scramble testing system in traditional sensor network nodes band, has greatly promoted test speed, has saved the testing time.Simultaneously, to the operating process of signal analyzer, reduce the requirement to tester's theoretical level when having simplified spuious test in the band, reduced testing cost.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is the system architecture diagram of the embodiment of the invention;
Fig. 2 is the spectrogram of the module output signal to be measured that signal analyzer is measured in the embodiment of the invention;
Fig. 3 is spuious spectrogram in the modular belt to be measured that signal analyzer is measured under the spuious measurement pattern in band in the embodiment of the invention;
Fig. 4 is the workflow diagram of the embodiment of the invention.
Embodiment
Below in conjunction with specific embodiment such scheme is described further.Should be understood that these embodiment are not limited to limit the scope of the invention for explanation the present invention.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in the normal experiment.
Embodiment:
The present embodiment has been described spuious method of testing in a kind of sensor network nodes band, system configuration as shown in Figure 1 in the interior spuious method of testing of sensor network nodes band, wherein module to be measured links to each other with signal analyzer by the SMA interface, module to be measured links to each other with PC by the RS232 serial ports, and signal analyzer links to each other with PC by the GPIB/LAN interface.
At first PC switches to signal analyzer the frequency of channel to be measured by GPIB/LAN control mouthful remote control signal analyzer.Set up long-range connection and initialized concrete steps are as follows:
1. set up PC and be connected long-range connection with instrument;
2. reset signal analyzer to initial condition;
3. select signal analyzer to the spectrum analysis measuring state;
4. module to be measured is set to emission state;
5. select signal analyzer to the interior spuious measurement pattern of band;
6. the analysis bandwidth that spuious test in the band is set is 10MHz;
7. the resolution bandwidth that spuious test in the band is set is 100KHz;
8. test frequency and the reference power of spuious test in the band are set.
Definition measuring frequency and carrier frequency according to the sensor network physical layer differ above 3.5MHz, and reference power is the high-average power of test in centre carrier frequency ± 1MHz bandwidth.
After initialization was finished, the measured signal that module is set correspondingly changed the output frequency of instrument.After setting up the channel of module to be measured, correspondingly change the test frequency of signal analyzer.
Shown in Figure 2 is frequency spectrum that signal that module to be measured is sent shows at signal analyzer is connected to the radio frequency line of module to be measured by SMA-SMA on the signal analyzer, and it is as follows that signal analyzer relevant arranges:
1. centre frequency (CF) is 2.405GHz
2. analyzing bandwidth (SPAN) is 10MHz
3．RBW=100KHz,VBW=100KHz
Spuious spectrogram in the signal analyzer modular belt to be measured that spuious measurement pattern is measured in band as shown in Figure 3.As can be seen from the figure, reference power is set to the high-average power in test channel centre frequency ± 1MHz bandwidth; Test frequency and carrier frequency differ above 3.5MHz.
Be the workflow diagram of scramble testing system in the sensor network nodes band of the present invention as shown in Figure 4, it is according to IEEE 802.15.4 code requirement, spuious checking property testing in the band to 16 signals of module to be measured.After the test beginning, first to the signal analyzer initialization, then judge to be measured has which, if selected " relative power spectrum density " test item, then program begins first test " channel 1 ", configure the channel of module to be measured by the RS-232 serial ports, centre frequency and analysis bandwidth by GPIB/LAN mouth configuration signal analyzer, then send data acquisition command by the GPIB/LAN mouth to signal analyzer, gather module to be measured to spuious accordance in the IEEE 802.15.4 standard band, the result of test will show by excel automatically, and " channel 1 " test is finished, and continues test " channel 2 " ... until 16 channel tests are finished.If selected " absolute power spectrum density " test item, then program begins first test " channel 1 ", configure the channel of module to be measured by the RS-232 serial ports, centre frequency and analysis bandwidth by GPIB/LAN mouth configuration signal analyzer, then send data acquisition command by the GPIB/LAN mouth to signal analyzer, gather module to be measured to spuious accordance in the IEEE 802.15.4 standard band, the result of test will show by excel automatically, " channel 1 " test is finished, and continues test " channel 2 " ... until 16 channel tests are finished.
Through laboratory tests, the designed interior scramble testing system of sensor network nodes band and the control method of the present invention is applied in experiment test and the production test, not only realized the optimization to scramble testing system in traditional sensor network nodes band, also greatly reduce simultaneously and be with the interior needed time of spuious test, reduce the complexity of test macro, saved testing cost.
Above-mentioned example only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the people who is familiar with technique can understand content of the present invention and according to this enforcement, can not limit protection scope of the present invention with this.All equivalent transformations that Spirit Essence is done according to the present invention or modification all should be encompassed within protection scope of the present invention.
Claims (4)
1. spuious method of testing in the sensor network nodes band, it is characterized in that, module to be measured in the sensor network nodes band in the spuious method of testing links to each other with signal analyzer by the SMA interface, module to be measured links to each other with PC by the RS232 serial ports, signal analyzer links to each other with PC by the GPIB/LAN interface, and concrete method of testing comprises tells lower step:
I, PC switch to the analysis frequency of signal analyzer the frequency of channel to be measured by GPIB/LAN interface remote control signal analyzer;
II, PC be by GPIB/LAN interface remote control signal analyzer, and the originate mode with signal analyzer from start the time switches to spuious measurement pattern in the band;
III, PC send instruction for module to be measured by the RS-232 serial ports, can change in real time the working channel of module to be measured in test process, make module be in emission state;
IV, PC arrange spuious test frequency and reference power in the band by GPIB/LAN interface remote control signal analyzer;
V, PC read spuious test result in the modular belt to be measured by GPIB/LAN interface remote control signal analyzer.
2. spuious method of testing in the sensor network nodes band according to claim 1 is characterized in that, in step I, II, IV, the V, PC can pass through GPIB/LAN interface remote control signal analyzer.
3. spuious method of testing in the sensor network nodes band according to claim 1 and 2 is characterized in that, described signal analyzer is that Agilent N9020A vows spectrum analyzer.
4. spuious method of testing in the sensor network nodes band according to claim 1 is characterized in that, described PC provides the tester to carry out the control of automatic test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105596159A CN103051400A (en) | 2012-12-21 | 2012-12-21 | In-band spurious emission testing method for sensor network node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105596159A CN103051400A (en) | 2012-12-21 | 2012-12-21 | In-band spurious emission testing method for sensor network node |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103051400A true CN103051400A (en) | 2013-04-17 |
Family
ID=48063912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105596159A Pending CN103051400A (en) | 2012-12-21 | 2012-12-21 | In-band spurious emission testing method for sensor network node |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103051400A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109600772A (en) * | 2018-12-13 | 2019-04-09 | 京信通信系统（中国）有限公司 | The method, apparatus and its main controller, repeater equipment that band spurious is eliminated |
| CN110417492A (en) * | 2019-08-12 | 2019-11-05 | 太仓市同维电子有限公司 | A kind of detection aerial band is interior to receive spuious method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101437261A (en) * | 2008-12-26 | 2009-05-20 | 北京五龙电信技术公司 | Radio frequency test system for mobile communication terminal |
| CN102014404A (en) * | 2009-09-04 | 2011-04-13 | 上海陆园电子科技有限公司 | 3G base station testing device |
| CN102647238A (en) * | 2012-03-21 | 2012-08-22 | 深圳市友讯达科技发展有限公司 | Telecom energy and frame protocol testing system of information collection wireless downlink channel module |
-
2012
- 2012-12-21 CN CN2012105596159A patent/CN103051400A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101437261A (en) * | 2008-12-26 | 2009-05-20 | 北京五龙电信技术公司 | Radio frequency test system for mobile communication terminal |
| CN102014404A (en) * | 2009-09-04 | 2011-04-13 | 上海陆园电子科技有限公司 | 3G base station testing device |
| CN102647238A (en) * | 2012-03-21 | 2012-08-22 | 深圳市友讯达科技发展有限公司 | Telecom energy and frame protocol testing system of information collection wireless downlink channel module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109600772A (en) * | 2018-12-13 | 2019-04-09 | 京信通信系统（中国）有限公司 | The method, apparatus and its main controller, repeater equipment that band spurious is eliminated |
| CN110417492A (en) * | 2019-08-12 | 2019-11-05 | 太仓市同维电子有限公司 | A kind of detection aerial band is interior to receive spuious method |
| CN110417492B (en) * | 2019-08-12 | 2021-09-07 | 太仓市同维电子有限公司 | Method for detecting in-band received spurious signals of antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ali et al. | ZigBee and LoRa based wireless sensors for smart environment and IoT applications | |
| Khutsoane et al. | IoT devices and applications based on LoRa/LoRaWAN | |
| US20120213098A1 (en) | Real-time and synchronization Internet of things analyzer System Architecture | |
| Bian et al. | Analysis of communication schemes for Advanced Metering Infrastructure (AMI) | |
| CN104569635A (en) | Wireless terminal antenna performance testing system | |
| CN102651669B (en) | A kind of anti-interference test system for sensor network nodes and method of testing | |
| Chen et al. | Design and implementation of a ZigBee-based wireless automatic meter reading system | |
| CN107959545A (en) | Data transmission method and device, mobile phone, data card | |
| CN106597081B (en) | Accurate current detection device under NB-IOT terminal multiple mode | |
| CN201536423U (en) | Hand-held wireless local area network test device and test system | |
| KR101763326B1 (en) | Apparatus and Method for Measuring Multiple Link Wireless Channel | |
| CN202004764U (en) | Anti-interference test system for sensor network nodes | |
| CN103051400A (en) | In-band spurious emission testing method for sensor network node | |
| CN109239493A (en) | Live distribution terminal automatic test instrument and test method | |
| Masadan et al. | LoRa LPWAN propagation channel modelling in IIUM campus | |
| CN103052107A (en) | Receiving limit value testing method for sensor network node | |
| CN202711012U (en) | Remote monitoring device for compost | |
| Šastný et al. | Wireless communications in smart metering | |
| CN103188021B (en) | System and method for testing multiple wireless radio frequency modules | |
| Rafiei et al. | Wireless communication protocols for smart metering applications in power distribution networks | |
| Yin et al. | Multi channel performance of dual band low power wireless network | |
| CN102647236A (en) | Broadband channel measurement method and device | |
| Boers et al. | Patterns in the RSSI traces from an indoor urban environment | |
| Musikanon et al. | ZigBee propagations and performance analysis in lastmile network | |
| CN103607248A (en) | Test method for receiving sensitivity of wireless communication module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130417 |