CN204131532U - A kind of micro power radio communication test macro - Google Patents
A kind of micro power radio communication test macro Download PDFInfo
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- CN204131532U CN204131532U CN201420574598.0U CN201420574598U CN204131532U CN 204131532 U CN204131532 U CN 204131532U CN 201420574598 U CN201420574598 U CN 201420574598U CN 204131532 U CN204131532 U CN 204131532U
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Abstract
A kind of micro power radio communication test macro, a layer is connected to form by power splitter (4) and attenuator (5) by ammeter (1), be connected with the power splitter (4) of test macro by the attenuator (5) of layer described in this, power splitter described in this (4) is connecting test system and concentrator (2) respectively, and concentrator (2) is arranged in shielded box (3); Wherein, be that more than one the mutual power splitter by front one deck (4) to be gone here and there with the attenuator (5) of later layer and connected to form by ammeter (1) by the layer that power splitter (4) and attenuator (5) are connected to form.The utility model can realize different manufacturers micropower wireless device and test under same test platform, ensure that the fairness of test result, science and reliability.
Description
Technical field
The utility model relates to a kind of radio communication measuring technology, belongs to corresponding measuring technique field.
Background technology
One of communication mode that micro power radio communication more extensively adopts as current Electric Energy Acquisition System, the current test for it and detect and mainly concentrate on the aspect such as error in dipping, electromagnetic interference of correlation table meter, and test and assessment are rarely had to its COMMUNICATION NETWORK PERFORMANCES and success rate aspect of checking meter.Thus result in after a lot of micro power radio communication table meter has been installed to scene, just discovery table meter communication aspects such as check meter unsuccessfully, the low inferior problem of success rate of checking meter, had a strong impact on the operation of system.So the test of being correlated with to the communication capacity of micro power radio communication equipment before installation and operation and assessment seem particularly necessary and urgent.The manufacturer of each micro power radio module is before product export, all carried out certain test and check that dispatches from the factory to its module, main test event includes: signal is spuious, the test of signal frequency deviation, centre frequency, centre frequency amplitude, receiving sensitivity, the error rate etc.; Domestic relevant DianKeYuan and other research institutions also establish relevant test platform successively.But the performance test of the communication network formed for a large amount of micro power radio modules and Evaluation Platform, going back of current domestic foundation is little, the relevant test method simultaneously published, technic relization scheme and documents and materials etc. are also very limited, and not comprehensively with deep.
Micropower wireless test system not only contains the test of self performance, also needs to test protocol conformance.Radio-frequency performance test mainly contains the test of transmitted power, transmission spectrum mask, spurious emissions, frequency tolerance, dynamically range of receiving, shared channel interference, monkey chatter, receiving sensitivity and channel width etc.In each Automatic meter reading system, all can there is the situation of many producers, polytypic, communication in the electric energy meter that it gathered, manages.Agreement unanimously contains beacon frame test, field intensity collects request and field intensity collect response test, configuration middle-end module request and configuration middle-end module promise test, network operation request and network operation to promise test, route requests and route promise test etc.The disunity of communication protocol, certainly will cause system to count with table the difficulty interconnected.Therefore in Automatic meter reading system development & construction process, the unifying and realize most important of communication protocol.
Utility model content
The purpose of this utility model, is to provide one to can be used in test micropower wireless communication module platform.
The purpose of this utility model is realize like this:
A kind of micro power radio communication test macro, the utility model feature is, a layer is connected to form by power splitter and attenuator by ammeter, be connected with the power splitter of test macro by the attenuator of layer described in this, power splitter described in this is connecting test system and concentrator respectively, and concentrator is arranged in shielded box; Wherein, connected to form by the attenuator string that the layer that power splitter and attenuator are connected to form is more than one the mutual power splitter by front one deck and later layer by ammeter.
This system of the utility model is formed by 7 layers, access unit is the ammeter of band communication function, and the highest jumping figure of link between access unit and concentrator reaches 8 jumpings, defines 7 grade 8 and jumps network, each access unit node dynamically networks, and is the DAU forwarding data that it is adjacent.
The tested channel of test macro by control PC setting wireless communication module and the pad value etc. of attenuator, the test of simulated field micro power radio module.
The beneficial effects of the utility model are:
(1) evaluation system by setting up, more deep and comprehensive control can be had to its network performance and overall performance before micropower wireless device puts into operation, the passive mode just finding after avoiding actual putting into operation as far as possible and deal with problems, for company saves a large amount of man power and materials.
(2) by the construction of evaluation system, to achieve in the situation of laboratory the full test of micropower wireless network performance and assessment, make test and assessment possess fine operability, convenience and reproducibility.Solve and must be undertaken by on-the-spot practical operation situation the test of micropower wireless network performance and assessment at present, thus be inconvenient to the problem testing and assess.
(3) by the construction of evaluation system, different manufacturers micropower wireless device can be realized and test under same test platform, ensure that the fairness of test result, science and reliability.
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the utility model system configuration schematic diagram.
Embodiment
Fig. 1 is structural principle block diagram, a kind of micro power radio communication test macro, the utility model feature is, a layer is connected to form by power splitter 4 and attenuator 5 by ammeter 1, be connected with the power splitter 4 of test macro by the attenuator 5 of layer described in this, power splitter 4 described in this is connecting test system and concentrator 2 respectively, and concentrator 2 is arranged in shielded box 3; Wherein, be that more than one the mutual power splitter 4 by front one deck to be gone here and there with the attenuator 5 of later layer and connected to form by ammeter 1 by the layer that power splitter 4 and attenuator 5 are connected to form.
This system of the utility model is formed by 7 layers, access unit is the ammeter 1 of band communication function, and the highest jumping figure of link between access unit and concentrator 2 reaches 8 jumpings, defines 7 grade 8 and jumps network, each access unit node dynamically networks, and is the DAU forwarding data that it is adjacent.
The tested channel of test macro by control PC setting wireless communication module and the pad value etc. of attenuator 5, the test of simulated field micro power radio module.
The utility model system is checked meter and testing evaluation to N electric energy meter, can be divided into ground floor 6, the second layer 7 ... 7th layer 8.The critical component shielded box 3 of micro power radio module test and the Design and implementation of radio frequency attenuator 5.Penetrance due to wireless signal receiving sensitivity that is strong and micro power radio module is high, needs to design the signal shielding case 3 met the demands, to shield the signal of each test module, to carry out the test of network; Wireless signal, after shielded box and feeder line extract, through certain decay, just must can simulate different communication paths, to test wireless module communication performance under various circumstances.
The utility model assesses more massive networking function and routing performance by increase shielded box 3, attenuator 5, power splitter 4, RF signal combining network module more than the more multi-hop number of 7 level structures.This evaluation system shields test box 3, several collectors shielding test box and corresponding adjustable attenuator 5 (0 ~ 99dB adjustable range) and RF signal combining network module composition by a concentrator, the networking performance of testing evaluation micropower radio channel network that can be objective and accurate, and can the self organization ability of evaluating system and stability.
The utility model system standard is configured to three racks, and rack adopts the standard cabinet of 19 inches.Wherein, No. I rack is containing two concentrator module shielded box unit, a collector module shield box unit and corresponding attenuator unit and combining network, and No. II and No. III rack are respectively containing 3 and attenuator and combining network accordingly.
Utility model works principle
1), concentrator wireless module test shielded box be also called concentrator shielded box 3, have the suppression more than 70dB to the radio signal below 800MHz frequency, relatively pure radio dark room conditions can be provided, reduce the interference of extraneous radio wave.
2), realize radio frequency signal function along separate routes, by increasing power splitter 4, every one deck can connect multiple shielded box 3, can realize more massive network verification.
3), adjustable radio frequency attenuator 5 by arranging suitable pad value, simulate radio signal in actual environment transmission attenuation performance.Its dynamic adjustments scope is 0 ~ 90dB, can arrange corresponding pad value by the attenuation of regulated attenuator 5, be used for simulating radio signal in actual environment transmission attenuation performance.The decay of attenuator is 90dB to the maximum, is divided into coarse adjustment and fine tuning, and the stepping of coarse adjustment shelves is 10dB, and the stepping of fine tuning shelves is 1dB.
4), use shielded box 3 by device mask; Signal is derived by use antenna, feeder line, more quantitatively divides into groups to test with attenuator.Carry out networking test, anti-interference test, sensitivity test.
5), technical parameter:
(1) device operating voltage: 220V ± 10%;
(2) power of input power: <100VA;
(3) radio concentrator shielded box radiofrequency signal rejection ratio: be better than 80dB;
(4) wireless collection device/ammeter shielded box radiofrequency signal rejection ratio: be better than 80dB;
(5) antenna frequencies scope: 100MHz ~ 1000MHz;
(6) concentrator shielded box, wireless collection device/ammeter shielded box have with lower interface:
(7) RF signal attenuation adjuster scope: 0 ~ 89DB, 1dB step-by-step adjustment;
(8) RF path matched impedance: 50 Ω.
Claims (2)
1. a micro power radio communication test macro, it is characterized in that, a layer is connected to form by power splitter (4) and attenuator (5) by ammeter (1), be connected with the power splitter (4) of test macro by the attenuator (5) of layer described in this, power splitter described in this (4) is connecting test system and concentrator (2) respectively, and concentrator (2) is arranged in shielded box (3); Wherein, be that more than one the mutual power splitter by front one deck (4) to be gone here and there with the attenuator (5) of later layer and connected to form by ammeter (1) by the layer that power splitter (4) and attenuator (5) are connected to form.
2. a kind of micro power radio communication test macro according to claim 1, it is characterized in that, this system is formed by 7 layers, access unit is the ammeter (1) of band communication function, the highest jumping figure of link between access unit and concentrator (2) reaches 8 jumpings, define 7 grade 8 and jump network, each access unit node dynamically networks, and is the access unit forwarding data that it is adjacent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420574598.0U CN204131532U (en) | 2014-09-30 | 2014-09-30 | A kind of micro power radio communication test macro |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420574598.0U CN204131532U (en) | 2014-09-30 | 2014-09-30 | A kind of micro power radio communication test macro |
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| Publication Number | Publication Date |
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| CN204131532U true CN204131532U (en) | 2015-01-28 |
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| CN201420574598.0U Active CN204131532U (en) | 2014-09-30 | 2014-09-30 | A kind of micro power radio communication test macro |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104780011A (en) * | 2015-04-24 | 2015-07-15 | 国网冀北电力有限公司电力科学研究院 | Micro-power wireless communication site channel environment simulator for short-distance power communication |
| CN106815991A (en) * | 2015-11-30 | 2017-06-09 | 深圳友讯达科技股份有限公司 | Radiofrequency signal multilink analogue means |
| CN109412903A (en) * | 2018-12-30 | 2019-03-01 | 国网北京市电力公司 | Communication test method and device |
-
2014
- 2014-09-30 CN CN201420574598.0U patent/CN204131532U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104780011A (en) * | 2015-04-24 | 2015-07-15 | 国网冀北电力有限公司电力科学研究院 | Micro-power wireless communication site channel environment simulator for short-distance power communication |
| CN106815991A (en) * | 2015-11-30 | 2017-06-09 | 深圳友讯达科技股份有限公司 | Radiofrequency signal multilink analogue means |
| CN109412903A (en) * | 2018-12-30 | 2019-03-01 | 国网北京市电力公司 | Communication test method and device |
| CN109412903B (en) * | 2018-12-30 | 2020-11-06 | 国网北京市电力公司 | Communication test method and device |
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| C14 | Grant of patent or utility model | ||
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