CN206118034U - TDD LTE system goes upward interference test instrument - Google Patents
TDD LTE system goes upward interference test instrument Download PDFInfo
- Publication number
- CN206118034U CN206118034U CN201621110125.0U CN201621110125U CN206118034U CN 206118034 U CN206118034 U CN 206118034U CN 201621110125 U CN201621110125 U CN 201621110125U CN 206118034 U CN206118034 U CN 206118034U
- Authority
- CN
- China
- Prior art keywords
- module
- signal
- radio
- antenna
- processing unit
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The utility model discloses a TDD LTE system goes upward interference test instrument, including the antenna for the space signal of receive base stations transmission, radio frequency module amplifier with antenna connection for the signal of receiving the antenna enlargies, the baseband processing module who is connected with a radio frequency module amplifier for carry out baseband processing to a radio frequency module amplifier amplifying signal, the central processing unit who is connected with baseband processing module for carry out digital filtering to the signal behind the baseband processing, and the signal after handling digital filtering carries out the synchronous equipment and handles, and the 2nd radio frequency module amplifier of being connected with central processing unit for signal after handling central processing unit enlargies, and with signal output to a frequency spectrograph or the sweep generator on. The utility model discloses can efficient extraction signal frequency and the frequency spectrum of watt level of interference source, simultaneously can be in the short time accurate concrete position of seeking the interference source.
Description
Technical field
This utility model is related to communication test technical field, and more specifically, more particularly to a kind of TDD-LTE system is up
Disturbed test instrument.
Background technology
For mobile communications network, it is ensured that the premise of quality of service is to use clean frequency spectrum and signal to cover.Do not have
Used or disturbed by other systems.Otherwise, performance and the terminal use of interfered with system can be made larger using all producing
Affect.With the progressively construction of 4G LTE base stations, defined the situation that 2/3/4G base stations coexist at present, inter-system interference it is general
Rate is also substantially improved, in the base station built at present, it has been found that substantial amounts of mobile 4G TD-LTE base stations are interfered.These
Interference includes that 2/3G cells reconcile clutter interference, base station to the obstruction of TDD-LTE cells, mutually and cross to cover and do in the LTE nets for bringing
Disturb, in addition with other radios, it is miscellaneous that outside co-channel interference that such as cellular phone signal shielding device brings, WLAN AP bring
Dissipate and block interference.
At present both at home and abroad technology cannot be tested for TDD-LTE interference source in up going route effective spectrum and to extract interference source concrete
Frequency and power.For this reason, it is necessary to design a kind of TDD-LTE system uplink interference testing tool and method of testing come on solving
State technical problem.
Utility model content
The purpose of this utility model is to provide a kind of TDD-LTE system uplink interference testing tool, can effectively extract dry
The signal frequency in source and the frequency spectrum of watt level are disturbed, while the particular location of interference source can be searched accurately at short notice.
In order to achieve the above object, the technical solution adopted in the utility model is as follows：
A kind of TDD-LTE system uplink interference testing tool, including：
Antenna, for receiving the spacing wave of Base Transmitter；
The first radio-frequency module amplifier being connected with antenna, for being amplified to the signal that antenna is received；
The baseband processing module being connected with the first radio-frequency module amplifier, for what is amplified to the first radio-frequency module amplifier
Signal carries out Base-Band Processing；
The central processing unit being connected with baseband processing module, for carrying out digital filtering to the signal after Base-Band Processing, and
Signal after digital filtering is processed synchronizes equipment process；
And the second radio-frequency module amplifier being connected with central processing unit, for the signal after processing central processing unit
It is amplified, and by signal output a to audiofrequency spectrometer or sweep generator.
Preferably, also include the power management module being connected with central processing unit, and be connected with power management module and
For the lithium battery that the instrument provides working power.
Preferably, the bluetooth communication being connected with central processing unit is also included, terminal unit passes through bluetooth communication
Wirelessly it is connected with central processing unit and equipment is configured according to the time slot proportion situation of local base station.
Preferably, the key-press module being connected with central processing unit is also included, key-press module in shutdown, transport by central processing unit
For Low-power-consumptiodormancy dormancy state, power management module makes the first radio-frequency module amplifier, baseband processing module, bluetooth communication
Power down state is in the second radio-frequency module amplifier；Central processing unit is interrupted control pipe by key-press module in start
Foot level is dragged down, and power management module penetrates the first radio-frequency module amplifier, baseband processing module, bluetooth communication and second
Frequency module amplifier is in power opening state.
Preferably, power supply indicator, synchro light and the synchronizing quality display lamp being connected with central processing unit is also included.
Preferably, the USB module being connected with central processing unit is also included.
Preferably, also including box body, BTS output ports, ANT ports, USB connectors, bluetooth are provided with the box body
Antenna and external power supply charging inlet, the BTS output ports are used for connection the second radio-frequency module amplifier and audiofrequency spectrometer or sweep
Frequency instrument, the ANT ports are used to install antenna, and the USB connectors are used to be connected with USB module, the Bluetooth antenna and indigo plant
Tooth communication module connects, and the external power supply charging inlet is connected with lithium battery.
Preferably, the antenna is ANT antennas, and the ANT antennas are rotatably mounted in ANT ports.
Compared with prior art, the utility model has the advantage of：This utility model is to coordinate sweep generator/audiofrequency spectrometer to survey
Amount, the professional test instrument analyzed and search TD-LTE interference sources.Using time filtering technology, solution frame synchronizing, by with
Existing network TD-LTE signals are synchronized, can as needed to during different time-gap proportioning using mobile phone or computer various terminals
The up-downgoing protection time slot signal of TDD-LTE is extracted and amplified, so as to the accurate position for searching interference source and watt level.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work
Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the principle framework figure of TDD-LTE system uplink interference testing tool described in the utility model.
Fig. 2 is the structural representation of TDD-LTE system uplink interference testing tool described in the utility model.
Fig. 3 is the figure that software interface is opened in TDD-LTE system uplink interference testing tool described in the utility model.
Fig. 4 is the surface chart that bluetooth equipment is searched in TDD-LTE system uplink interference testing tool described in the utility model.
Fig. 5 is the surface chart of Bluetooth pairing in TDD-LTE system uplink interference testing tool described in the utility model.
Fig. 6 is the interface in TDD-LTE system uplink interference testing tool described in the utility model after Bluetooth pairing success
Figure.
Fig. 7 is the surface chart of TDD-LTE system uplink interference testing tool medium frequency scanning described in the utility model.
Fig. 8 is up normally opened or descending normally opened in TDD-LTE system uplink interference testing tool described in the utility model
Surface chart.
Description of reference numerals：1st, antenna, the 2, first radio-frequency module amplifier, 3, baseband processing module, 4, central processing unit,
5th, bluetooth communication, 6, USB module, 7, power supply indicator, 8, synchro light, 9, synchronizing quality display lamp, 10, button mould
Block, 11, power management module, 12, lithium battery, the 13, second radio-frequency module amplifier, 14, terminal unit, 15, BTS outfans
Mouthful, 16, audiofrequency spectrometer/sweep generator, 17, box body, 18, ANT ports, 19, USB connectors, 20, Bluetooth antenna, 21, external power supply fills
Electrical interface.
Specific embodiment
Preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings, so that advantage of the present utility model
Can be easier to be readily appreciated by one skilled in the art with feature, it is apparent clear and definite so as to make to protection domain of the present utility model
Define.
Refering to shown in Fig. 1, this utility model provides antenna 1, for receiving the spacing wave of Base Transmitter；Connect with antenna 1
The the first radio-frequency module amplifier 2 for connecing, for being amplified to the signal that antenna 1 is received；Connect with the first radio-frequency module amplifier 2
The baseband processing module 3 for connecing, for carrying out Base-Band Processing to the signal that the first radio-frequency module amplifier 2 amplifies；With Base-Band Processing
The central processing unit 4 of the connection of module 3, for carrying out digital filtering to the signal after Base-Band Processing, and after digital filtering is processed
Signal synchronize equipment process；And the second radio-frequency module amplifier 13 being connected with central processing unit 4, for central authorities
Signal after the process of processor 4 is amplified, and by signal output a to audiofrequency spectrometer or sweep generator 16.
This utility model also includes the power management module 11 being connected with central processing unit 4, and and power management module
11 connections and the lithium battery 12 for providing working power for the instrument.Charging and discharging lithium battery is managed and realized by power management module 11,
When instrument is powered by external power supply, power management module 11 monitors the voltage of lithium battery 12 and external power supply charging voltage, leads to
Cross both processors 4 voltage difference to determine to lithium cell charging.
This utility model also includes the bluetooth communication 5 being connected with central processing unit 4, and terminal unit 14 is logical by bluetooth
Letter module 5 is wirelessly connected with central processing unit 4 and equipment is configured according to the time slot proportion situation of local base station.
The terminal unit 14 is mainly used in carrying out pattern configurations to testing tool, and it can be using computer or mobile phone etc. eventually
End.
This utility model also includes power supply indicator 7, synchro light 8 and the synchronizing quality being connected with central processing unit 4
Display lamp 9.
This utility model also includes the USB module 6 being connected with central processing unit 4, for data storage.
In shutdown, central processing unit 4 applies to Low-power-consumptiodormancy dormancy state to testing tool, and power management module 11 makes first
The radio-frequency module amplifier 13 of radio frequency amplifier 2 and second, baseband processing module 3, bluetooth communication 5 are in power-off shape
State.Now equipment power dissipation is extremely low.When key-press module 10 is pressed, central processing unit 4 interrupts control pin level and is pulled low, centre
Reason device 4 be interrupted wake-up, central processing unit 4 enters working condition, power management module 11 by all external module electric power startings,
Equipment enters normal operating condition, and status indicator lamp 7 indicates lithium battery power state by light color.Electricity during bright orange<
20%, electricity 20%～70% during bright green, electricity during sapphirine>70%.
In open state, length presses key-press module 10 to equipment, and central processing unit 4 monitors correspondence pin level by long-time
Drag down, central processing unit 4 preserves at once current data in memorizer, out of service, into resting state, while passing through power supply
Management module 11 is by the first radio frequency amplifier 2 and the second radio-frequency module amplifier 13, baseband processing module 3, bluetooth communication 5
Power-off.
This utility model also includes the key-press module 10 being connected with central processing unit 4, and key-press module 10 is central in shutdown
Processor 4 applies to Low-power-consumptiodormancy dormancy state, and power management module 11 makes the first radio-frequency module amplifier 2, baseband processing module
3rd, the radio-frequency module amplifier 13 of bluetooth communication 5 and second is in power down state；Key-press module 10 start when, will in
Central processor 4 interrupts control pin level and drags down, and power management module 11 makes the first radio-frequency module amplifier 2, Base-Band Processing mould
Block 3, the radio-frequency module amplifier 13 of bluetooth communication 5 and second are in power opening state.
Testing tool in open state, terminal unit 14 coupled by bluetooth communication 5 and by request command to
Central processing unit 4 receives Bluetooth pairing instruction, and the successful connection of bluetooth communication 5 indicates that designator is sent to central processing unit and returns
Return.
This utility model when in use, by push button module 10 when central processing unit 4 interrupt control pin level quilt
Drag down, central processing unit 4 is interrupted wake-up, central processing unit 4 enters working condition, power management module is by all external modules
Electric power starting, power supply indicator 7 is lighted, and equipment enters normal operating condition, and open a terminal equipment 14APP testing tools and equipment
Linked, send out device 2 big through radio-frequency module by mobile ANT antennas 1 and be amplified, then carried out by baseband processing module 3
Base-Band Processing is done digital filtering and synchronizer etc. and is processed by central processing unit 4 again, refers to if testing tool with base station synchronization
Show the Chang Liang of lamp 8, not working then can not be synchronous, the good then Chang Liang of display lamp 9 of equipment synchronizing quality, flash or do not work then synchronizing quality
Difference.Amplify signal through radio-frequency module amplifier 13 again, to audiofrequency spectrometer, signal becomes Jing BTS output ports on observation audiofrequency spectrometer 16
Change, orient the particular location of interference source, successfully determine interference source.
Refering to shown in Fig. 2, this utility model includes in structure box body 17, and BTS outfans are provided with the box body 17
Mouth 15, ANT ports 18, USB connectors 19, Bluetooth antenna 20 and external power supply charging inlet 21, the BTS output ports 15 are used
In the second radio-frequency module amplifier 13 and audiofrequency spectrometer or sweep generator 16 is connected, the ANT ports 18 are used to install antenna 1, described
USB connectors 19 are used to be connected with USB module 6, and the Bluetooth antenna 20 is connected with bluetooth communication 5, the external power supply
Charging inlet 21 is connected with lithium battery 12.
Preferably, the antenna 1 is ANT antennas, the ANT antennas are rotatably mounted in ANT ports 18.
The step of this utility model realizes test specifically includes following steps：
First, local networks associated frequency parameter configuration information is collected, website geography information, cell azimuth information, by dry
Site information is disturbed, the information such as time period are disturbed
2nd, the special APP of installing terminal equipment testing tool；
3rd, testing tool ANT ports connect beam antenna, and OUT terminal mouth then connects audiofrequency spectrometer
4th, equipment testing tool is opened by power key, terminal unit is by USB or bluetooth connection testing tool
5th, terminal unit search bluetooth equipment is connected with testing tool successful matching, into software interface, selects frequency to sweep
Described point hits the frequency and signal quality situation of " frequency scanning " refreshable current location, be switched to passage arrange interface, according to work as
Ground TD-LTE network special subframe patterns are configured, and can be opened " up normally opened " or " descending normally opened " and open according to test needs
Close.Comprise the following steps that：
1st, Start-up and Adjustment instrument APP softwares, it is allowed to open Bluetooth of mobile phone, as shown in Figure 3.
2nd, " search bluetooth equipment " is clicked on, search TDD tests are precious, as shown in Figure 4.
3rd, Search Results show that select corresponding TDD tests treasured to be attached, Bluetooth pairing connects, as shown in Figure 5.
4th, after successful connection, the precious cell voltage amount of TDD tests and the last carrier center frequency for arranging can be shown, is such as schemed
Shown in 6.
5th, the frequency and signal quality situation of " frequency scanning " refreshable current location are clicked on, Lycoperdon polymorphum Vitt progress bar represents scanning
Progress, as shown in Figure 7.
6th, " up normally opened " or " descending normally opened " switch and time slot proportion can be opened, as shown in Figure 8 according to test needs.
7th, connecting test instrument rotates reception antenna as audiofrequency spectrometer if the noiseless source in space is relatively flat, and there is interference in such as space
Source is present, and is amplified by testing tool and then clearly shows that signal waveform amplitude occurs on audiofrequency spectrometer, so as to exactly
Judge interference source particular location and watt level.
6th, audiofrequency spectrometer is set to Modulation, confirms that equipment and base station signal are synchronous well according to field network situation
It is configured to test frequency range, has configured special subframe pattern.Check together after the completion of special time slot configuration and in time domain (SPAN=0Hz)
Step state, shows synchronous good in GP without mutation pulse.After completing above-mentioned steps, audiofrequency spectrometer is set to frequency domain pattern, slowly
Slow mobile beam antenna simultaneously observes signal intensity on frequency spectrum, orients the particular location of interference source, determines interference source, completes interference
Investigate in source.
Testing tool carries out pattern configurations by terminal unit, and when " up normally opened " switch is opened, system is in up
Amplification mode, only amplifies the signal of TD-LTE uplink service time slots；When " descending normally opened " switch is opened, system is put in transparent
Large model, amplifies all external signals, is arranged according to local time slot proportion, and the special subframe time slot proportion during passage is arranged is given birth to
During effect, system only amplifies the signal of correspondence GP (the up-downgoing protection time slot of TD-LTE), for disturbing investigation, using solution frame synchronization
Come synchronous base station, by synchronizing with existing network TD-LTE signals, as needed (TD-LTE's is upper to the GP of different time-gap proportioning
Descending protection time slot) signal extracted and amplified., filtered using time domain filtering, do not affecting base station normal work
Effectively amplify interference source simultaneously, analyze and the interference source particular location and interference source of TD-LTE are accurately searched by rotary antenna
Signal intensity, and can effectively extract the concrete frequency of interference source and power.
By enforcement of the present utility model, it has the following advantages that：1st, swept in corresponding frequency spectrum by portable antenna
In frequency instrument or audiofrequency spectrometer, so as to find interference source in very short time, the accurate particular location for searching interference source.2nd, by frequency
Prepenem effectively finds the concrete frequency of interference source and watt level each details.3rd, small volume, easy to carry, internal battery,
Continuation of the journey is long, without the need for external power supply in certain hour.4th, can be by the interconnection of bluetooth and terminal, the online configuration relevant parameter of special APP,
Operation simple and convenient.5th, external relay indicating light, can be clearly seen the working condition of equipment.
Although being described in conjunction with the accompanying embodiment of the present utility model, patent owner can want in appended right
Various modifications or modification are made within the scope of asking, as long as less than the protection model described by claim of the present utility model
Enclose, all should be within protection domain of the present utility model.
Claims (8)
1. a kind of TDD-LTE system uplink interference testing tool, it is characterised in that：Including,
Antenna, for receiving the spacing wave of Base Transmitter；
The first radio-frequency module amplifier being connected with antenna, for being amplified to the signal that antenna is received；
The baseband processing module being connected with the first radio-frequency module amplifier, for the signal amplified to the first radio-frequency module amplifier
Carry out Base-Band Processing；
The central processing unit being connected with baseband processing module, for carrying out digital filtering to the signal after Base-Band Processing, and by number
Signal after word Filtering Processing synchronizes equipment process；
And the second radio-frequency module amplifier being connected with central processing unit, carry out for the signal after processing central processing unit
Amplify, and by signal output a to audiofrequency spectrometer or sweep generator.
2. TDD-LTE system uplink interference testing tool according to claim 1, it is characterised in that：Also include and central authorities
The power management module of processor connection, and the lithium electricity for being connected with power management module and providing working power for the instrument
Pond.
3. TDD-LTE system uplink interference testing tool according to claim 2, it is characterised in that：Also include and central authorities
The bluetooth communication of processor connection, terminal unit is wirelessly connected by bluetooth communication and central processing unit and basis is worked as
The time slot proportion situation of ground base station is configured to equipment.
4. TDD-LTE system uplink interference testing tool according to claim 3, it is characterised in that：Also include and central authorities
The key-press module of processor connection, in shutdown, central processing unit applies to Low-power-consumptiodormancy dormancy state, power management to key-press module
Module makes the first radio-frequency module amplifier, baseband processing module, bluetooth communication and the second radio-frequency module amplifier in electricity
Source closed mode；Central processing unit is interrupted control pin level and is dragged down by key-press module in start, and power management module makes the
One radio-frequency module amplifier, baseband processing module, bluetooth communication and the second radio-frequency module amplifier are in electric power starting shape
State.
5. TDD-LTE system uplink interference testing tool according to claim 1, it is characterised in that：Also include and central authorities
Power supply indicator, synchro light and synchronizing quality display lamp that processor connects.
6. TDD-LTE system uplink interference testing tool according to claim 1, it is characterised in that：Also include and central authorities
The USB module of processor connection.
7. TDD-LTE system uplink interference testing tool according to claim 3, it is characterised in that：Also include box body,
The box body is provided with BTS output ports, ANT ports, USB connectors, Bluetooth antenna and external power supply charging inlet, described
BTS output ports are used for the second radio-frequency module amplifier of connection and audiofrequency spectrometer or sweep generator, and the ANT ports are used to install day
Line, the USB connectors are used to be connected with USB module, and the Bluetooth antenna is connected with bluetooth communication, the external power supply
Charging inlet is connected with lithium battery.
8. TDD-LTE system uplink interference testing tool according to claim 7, it is characterised in that：The antenna is ANT
Antenna, the ANT antennas are rotatably mounted in ANT ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621110125.0U CN206118034U (en) | 2016-10-10 | 2016-10-10 | TDD LTE system goes upward interference test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621110125.0U CN206118034U (en) | 2016-10-10 | 2016-10-10 | TDD LTE system goes upward interference test instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206118034U true CN206118034U (en) | 2017-04-19 |
Family
ID=58528999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621110125.0U Active CN206118034U (en) | 2016-10-10 | 2016-10-10 | TDD LTE system goes upward interference test instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206118034U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106255147A (en) * | 2016-10-10 | 2016-12-21 | 广州市瀚云信息技术有限公司 | A kind of TDD LTE system uplink interference testing tool and method of testing |
| CN108391280A (en) * | 2018-01-08 | 2018-08-10 | 东莞市慧眼数字技术有限公司 | Signal test system based on NB-IOT networks and method |
| CN108462613A (en) * | 2017-12-29 | 2018-08-28 | 中兴网鲲信息科技（上海）有限公司 | A kind of mobile test devices and methods therefor |
-
2016
- 2016-10-10 CN CN201621110125.0U patent/CN206118034U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106255147A (en) * | 2016-10-10 | 2016-12-21 | 广州市瀚云信息技术有限公司 | A kind of TDD LTE system uplink interference testing tool and method of testing |
| CN106255147B (en) * | 2016-10-10 | 2023-11-14 | 广州市瀚云信息技术有限公司 | TDD-LTE system uplink interference testing tool and testing method |
| CN108462613A (en) * | 2017-12-29 | 2018-08-28 | 中兴网鲲信息科技（上海）有限公司 | A kind of mobile test devices and methods therefor |
| CN108391280A (en) * | 2018-01-08 | 2018-08-10 | 东莞市慧眼数字技术有限公司 | Signal test system based on NB-IOT networks and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106255147A (en) | A kind of TDD LTE system uplink interference testing tool and method of testing | |
| CN206851042U (en) | A kind of Portable narrow band Internet of Things signal sniff instrument | |
| CN101399864B (en) | Test system and method for standby current of mobile terminal | |
| CN206118034U (en) | TDD LTE system goes upward interference test instrument | |
| CN108848527B (en) | Method and device for polling and acquiring quality information of full-band wireless network | |
| CN104702689B (en) | Electromagnetic radiation mobile application service monitoring system | |
| CN201536423U (en) | Hand-held wireless local area network test device and test system | |
| CN106597081B (en) | Accurate current detection device under NB-IOT terminal multiple mode | |
| CN109120358A (en) | Test method, mobile terminal, surveying device and the system of radio frequency signal | |
| CN101166336B (en) | Road measuring and recording device and system | |
| CN208207224U (en) | The Beidou communication back splint of handheld terminal | |
| CN207851146U (en) | A kind of electric energy meter communication device and electric energy meter system | |
| CN208209970U (en) | Electric power radio signal switching circuit and signal testing terminal | |
| CN104702687B (en) | It is a kind of can real-time data acquisition issue electromagnetic radiation application service monitoring platform | |
| CN103095385B (en) | Cellphone power meter | |
| CN203968154U (en) | A kind of long-range kernel phase system based on wireless Internet | |
| CN210579258U (en) | Wireless signal detection device suitable for power equipment terminal | |
| CN202406303U (en) | Simple test system of mobile network | |
| CN205901716U (en) | Evaluation and test expert system is divided to room | |
| CN203136175U (en) | Public mobile communication base station testing system | |
| CN203407019U (en) | Mining WIFI wireless communication personnel location management system | |
| CN206759738U (en) | Mobile phone terminal search and control device based on mobile phone signal | |
| CN107528644A (en) | A kind of portable wireless radio-frequency signal detection equipment | |
| CN218675735U (en) | A electric power basic resource information collection device for 5G basic station construction | |
| CN216527556U (en) | Electricity consumption information acquisition equipment based on wireless RS485 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |