CN114978359A - Internet of things radio frequency interference detector - Google Patents
Internet of things radio frequency interference detector Download PDFInfo
- Publication number
- CN114978359A CN114978359A CN202210525097.2A CN202210525097A CN114978359A CN 114978359 A CN114978359 A CN 114978359A CN 202210525097 A CN202210525097 A CN 202210525097A CN 114978359 A CN114978359 A CN 114978359A
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- instrument body
- heat dissipation
- interference
- internet
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses an Internet of things radio frequency interference detector which comprises an instrument body, wherein a heat dissipation port is formed in the side wall of one end of the instrument body, a separation net is arranged on the side wall opposite to the heat dissipation port, a display screen, lamp body keys, an IIC interface and a UART interface are arranged on the side wall adjacent to the heat dissipation port, a top cover is arranged at the top of the instrument body, and a fixing assembly is arranged at the bottom of the instrument body. The radio frequency interference detector can receive interference signals of different frequencies through three groups of antennas of different frequencies, records the start time, the end time, the maximum interference peak value and the average interference intensity of the interference through the ferroelectric memory, and can give an alarm in real time and report interference history records by uploading a built-in internet of things communication module to a cloud platform, so that related personnel can know the interference situation of the radio frequency and related data and process the interference problem of the radio frequency at the first time.
Description
Technical Field
The invention relates to the technical field of radio frequency interference detection, in particular to a radio frequency interference detector of the Internet of things.
Background
Radio frequency is a high-frequency alternating current, so called electromagnetic wave, and radio frequency interference is interference caused by the electromagnetic wave, for example, two electromagnetic waves with frequencies which are not much different are simultaneously received by a receiver to cause interference, and harmonic interference exists near a transmitting station to interfere other receiving equipment.
In some workplaces and working environments, particularly in some signal stations or signal receiving and transmitting base stations with poor signal shielding, if radio frequency signal interference or abnormal radio frequency signal interference is received, some important signals can not be received easily, and if the radio frequency interference signals exist for a long time, some working processes can not be carried out inevitably, so that serious loss is caused.
Disclosure of Invention
The invention aims to provide an internet of things radio frequency interference detector, which aims to solve the problem that some important signals cannot be received and serious loss is caused due to long interference time caused by radio frequency signal interference or abnormal radio frequency signal interference in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an Internet of things radio frequency interference detector comprises an instrument body, wherein a heat dissipation port is arranged on the side wall of one end of the instrument body, a separation net is arranged on the side wall opposite to the heat dissipation port, a display screen, lamp body keys, an IIC interface and a UART interface are arranged on the side wall adjacent to the heat dissipation port, a top cover is arranged at the top of the instrument body, a fixing component is arranged at the bottom of the instrument body, a low-frequency antenna, a medium-frequency antenna, a high-frequency antenna, a heat dissipation area and an equipment area are arranged inside the instrument body, a frame plate and a motor are arranged in the heat dissipation area, a detection component, a battery and a net rack are arranged in the equipment area, the detection component is fixed on the net rack and comprises an MCU (microprogrammed control unit), a radio frequency signal processing module, an RTC, a ferroelectric memory and an Internet of things communication module, the radio frequency signal processing module is respectively connected with the low-frequency antenna, the medium-frequency antenna and the high-frequency antenna through circuits, MCU passes through the circuit respectively with radio frequency signal processing module, RTC, ferroelectric memory, thing networking communication module, battery, display screen, lamp body button, motor, IIC interface and UART interface connection, thing networking communication module passes through network channel and high in the clouds platform remote connection.
As a preferred embodiment of the present invention, the heat dissipation port is internally provided with strip-shaped rotating blades, the strip-shaped rotating blades are sequentially distributed in the heat dissipation port in the longitudinal direction, and both ends of the strip-shaped rotating blades are connected to the inner walls of both sides of the heat dissipation port through the rotating ends.
As a preferred embodiment of the present invention, the rack is in an "L" shaped structure, one end of the rack is fixed to an inner wall of one side of the inside of the instrument body by screws, the other end of the rack is fixed to a bottom surface of the inside of the instrument body by screws, a battery placing area is provided between the rack and the bottom surface of the inside of the instrument body, a battery connecting seat is provided in the battery placing area, the battery is embedded in the battery connecting seat, a charging port of the battery connecting seat is connected to an external power source by a power line, and a discharging port of the battery connecting seat is connected to a power source interface of the MCU by a power line.
As a preferred embodiment of the present invention, the frame plate is fixed on the bottom surface inside the instrument body by screws, a slot hole is distributed on the plate surface at one end of the frame plate, a heat dissipation fan is arranged in the slot hole, a transmission disc is distributed on the plate surface at the other end of the frame plate, the transmission discs are connected by a transmission belt, the transmission discs are the same in number and correspond to the heat dissipation fans in position, a transmission shaft is welded on the transmission disc, and the transmission shaft penetrates through the frame plate and is connected with the rotating end of the heat dissipation fan by screws.
As a preferred embodiment of the present invention, the motor is located between the frame plate and the spacer, a fixing frame is disposed at a side end of the motor, the fixing frame is an "L" frame body, one end of the fixing frame is fixed to the motor through a screw, the other end of the fixing frame is fixed to a side wall inside the instrument body through a screw, and a transmission end of the motor is fixed to a transmission disc at one end of the frame plate through a screw.
As a preferred embodiment of the present invention, the fixing assembly is a fixing disk, the fixing disk is distributed at four corners of the bottom of the instrument body, and the fixing disk is provided with fixing screw holes.
In a preferred embodiment of the present invention, the instrument body, the cover, the frame plate, the rack, and the strip-shaped rotating blades are made of a mixture of resin and graphene.
Compared with the prior art, the invention has the beneficial effects that:
1. this radio frequency interference detector can receive the interfering signal of different frequencies through the antenna of three groups different frequencies, and the start time, the end time, the biggest interference peak value, average interference intensity of this section interference are recorded through ferroelectric memory, and go up to the high in the clouds platform through built-in thing networking communication module, can report to the police in real time, can report interference history again, thereby make relevant personnel learn the interference condition and the relevant data of radio frequency, thereby the very first time is handled the interference problem of radio frequency, the effectual radio frequency interference signal that has avoided exists for a long time, influence the receipt of signal, lead to losing serious problem.
2. This instrument is in the use, and the accessible motor drives multiunit heat dissipation fan and rotates, has effectively guaranteed the inside radiating effect of instrument, has ensured determine module's normal operating, and this instrument adopts independent battery to supply power, and when external power source broke down etc. trouble, the accessible battery continues to supply power to the instrument, has prolonged the live time of instrument.
Drawings
FIG. 1 is an overall external view of an instrument body according to the present invention;
FIG. 2 is a schematic view of the external structure of the apparatus body according to the present invention;
FIG. 3 is a schematic view of the entire connection of the instrument body according to the present invention;
FIG. 4 is a schematic view of the internal structure of the apparatus body according to the present invention;
fig. 5 is a flow chart of interference detection according to the present invention.
In the figure: 1-instrument body, 2-top cover, 3-display screen, 4-lamp body key, 5-IIC interface, 6-UART interface, 7-low frequency antenna, 8-intermediate frequency antenna, 9-high frequency antenna, 10-heat dissipation port, 11-heat dissipation area, 12-equipment area, 13-frame plate, 14-motor, 15-slotted hole, 16-detection component, 17-battery, 18-net rack.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution:
a radio frequency interference detector of the Internet of things comprises an instrument body 1, wherein a heat dissipation port 10 is arranged on the side wall of one end of the instrument body 1, a separation net is arranged on the side wall opposite to the heat dissipation port 10, a display screen 3, a lamp body key 4, an IIC interface 5 and a UART interface 6 are arranged on the side wall adjacent to the heat dissipation port 10, a top cover 2 is arranged at the top of the instrument body 1, a fixing component is arranged at the bottom of the instrument body 1, a low-frequency antenna 7, a medium-frequency antenna 8, a high-frequency antenna 9, a heat dissipation area 11 and an equipment area 12 are arranged inside the instrument body 1, a frame plate 13 and a motor 14 are arranged in the heat dissipation area 11, a detection component 16, a battery 17 and a net rack 18 are arranged in the equipment area 12, the detection component 16 is fixed on the net rack 18, and the detection component 16 comprises an MCU, a radio frequency signal processing module, an RTC, a ferroelectric memory and a communication module of the Internet of things, radio frequency signal processing module passes through the circuit and is connected with low frequency antenna 7, intermediate frequency antenna 8 and high frequency antenna 9 respectively, MCU passes through the circuit and is connected with radio frequency signal processing module, RTC, ferroelectric memory, thing networking communication module, battery, display screen, lamp body button, motor, IIC interface 5 and UART interface 6 respectively, thing networking communication module passes through network channel and high in the clouds platform remote connection, and this interference detector can detect out the radio frequency signal range and frequency in the environment and can record interference time, interference duration, radio frequency interference maximum value, reports high in the clouds platform through built-in communication module to realize the remote transmission of information, reached remote monitoring's effect.
Be equipped with bar rotating vane in thermovent 10, bar rotating vane distributes in thermovent 10 according to vertical in proper order, bar rotating vane both ends are passed through rotatory end and are connected on the both sides inner wall of thermovent 10, through bar rotating vane, can carry out switching control to thermovent 10, during the use instrument, can be through upset bar rotating vane, make it open, after the use, with bar rotating vane through the upset, make it be the closure state, avoided external dust to get into and caused the influence to the use of detecting component 16.
Fixed subassembly is the fixed disk, and the fixed disk distributes in the four corners department of instrument body 1 bottom, is equipped with fixed screw on the fixed disk, and the fixed disk mainly provides convenience for instrument body 1's fixed, because the instrument uses the place different, and the position of consequently placing is also different, to different detection position, fixes with the help of screw and relevant pedestal or support through the fixed disk, and it is convenient to provide for instrument installation is fixed.
The instrument body, the cover body, the frame plate, the net rack and the strip-shaped rotating blades are all made by mixing resin and graphene, the resin is a matrix of composite conductive plastic, and a proper amount of conductive material is added, so that the whole instrument has good conductivity, and meanwhile, the instrument has certain radio frequency interference resistance and protects the detection assembly.
In summary, the specific working process of the radio frequency interference detector is as follows:
the low-frequency antenna, the intermediate-frequency antenna and the high-frequency antenna respectively adopt a 30M-800 MHz wound antenna or a PCB printed antenna, a connected circuit adopts a two-channel radio frequency gain scanning circuit, the intensity of a signal received by the 30 MHz-800 MHz antenna when interference is received is simultaneously collected, a radio frequency signal processing module is used for collecting a signal intensity value, then an MCU is used for calculating the received radiation intensity of the radio frequency under two gains of the two antennas, the 5W and 30W radio frequencies are the received radiation intensity of the antenna under the combination of several pre-stored frequency points (for example, 10MHz, 30MHz, 100MHz, 800MHz and 3GHz), then the frequency and power interpolation is used for calculating the collected intensity value of the received signal, the frequency value range of the radio frequency signal can be estimated, an interference threshold value can be preset, and an internal RTC is used for recording the interference starting time, the interference ending time, the maximum interference peak value in a phase, The phase average interference value, RTC and cloud platform are synchronized in timing;
this instrument is in the use simultaneously, after 4 starts through lamp body button, motor 14 can drive the heat dissipation fan and rotate, and open the bar rotating vane of instrument body 1 one side, the heat dissipation fan drives and is discharged hot-air by thermovent 10, thereby play radiating effect, detection component 16's normal operating has been guaranteed, this instrument adopts independent battery 17 to supply power simultaneously, when external power supply is connected to the instrument, carry out the electric power storage to battery 17 promptly, provide electric power to detection component 16 and motor 14 by battery 17 again, when faults such as outage appear in external power supply, accessible battery 17 continues to supply power to the instrument, the live time of instrument has been prolonged.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a thing networking radio frequency interference detector which characterized in that: comprises an instrument body (1), a heat dissipation port (10) is arranged on the side wall of one end of the instrument body (1), a separation net is arranged on the side wall opposite to the heat dissipation port (10), a display screen (3), a lamp body key (4), an IIC interface (5) and a UART interface (6) are arranged on the side wall adjacent to the heat dissipation port (10), a top cover (2) is arranged at the top of the instrument body (1), a fixing component is arranged at the bottom of the instrument body (1), a low-frequency antenna (7), a medium-frequency antenna (8), a high-frequency antenna (9), a heat dissipation area (11) and an equipment area (12) are arranged in the instrument body (1), a frame plate (13) and a motor (14) are arranged in the heat dissipation area (11), a detection component (16), a battery (17) and a net rack (18) are arranged in the equipment area (12), the detection component (16) is fixed on the net rack (18), detection element (16) include MCU, radio frequency signal processing module, RTC, ferroelectric memory and thing networking communication module, radio frequency signal processing module passes through the circuit and is connected with low frequency antenna (7), intermediate frequency antenna (8) and high frequency antenna (9) respectively, MCU passes through the circuit and is connected with radio frequency signal processing module, RTC, ferroelectric memory, thing networking communication module, battery, display screen, lamp body button, motor, IIC interface (5) and UART interface (6) respectively, thing networking communication module passes through network channel and high in the clouds platform remote connection.
2. The internet of things radio frequency interference detector according to claim 1, characterized in that: be equipped with bar rotating blade in thermovent (10), bar rotating blade distributes in thermovent (10) according to vertical in proper order, bar rotating blade both ends are passed through rotatory end and are connected on the both sides inner wall of thermovent (10).
3. The internet of things radio frequency interference detector according to claim 1, characterized in that: rack (18) are "L" type structure, on the one end of rack (18) passed through the screw fixation on the inside one side inner wall of instrument body (1), the other end passed through the screw fixation on the inside bottom surface of instrument body (1), it places the district to be equipped with the battery between rack (18) and the inside bottom surface of instrument body (1), the battery is placed and is equipped with the battery connecting seat in the district, battery (17) gomphosis is in the battery connecting seat, the port that charges of battery connecting seat passes through the power line and is connected with external power supply, the port that discharges of battery connecting seat passes through power line and MCU's power interface connection.
4. The internet of things radio frequency interference detector of claim 1, characterized in that: frame plate (13) are fixed in on the inside bottom surface of instrument body (1) through the screw, it has slotted hole (15) to distribute on frame plate (13) one end face, be equipped with the heat dissipation fan in slotted hole (15), it has the transmission dish to distribute on frame plate (13) other end face, connect through the drive belt between the transmission dish, the transmission dish corresponds with the same and position of quantity of heat dissipation fan, the welding has the transmission shaft on the transmission dish, the transmission shaft runs through frame plate (13) and is connected through the rotation end of screw and heat dissipation fan.
5. The internet of things radio frequency interference detector according to claim 1, characterized in that: motor (14) are located frame plate (13) and separate between the net, the side of motor (14) is equipped with the mount, the mount is "L" support body, mount one end is passed through the screw and is fixed with motor (14), and the other end passes through the screw and fixes with instrument body (1) inside lateral wall locking, the transmission end of motor (14) passes through the screw and fixes with the drive plate locking of frame plate (13) one end.
6. The internet of things radio frequency interference detector according to claim 1, characterized in that: the fixing assembly is a fixing disc, the fixing disc is distributed at four corners of the bottom of the instrument body (1), and fixing screw holes are formed in the fixing disc.
7. The internet of things radio frequency interference detector according to claim 1, characterized in that: the instrument body (1), the cover body (2), the frame plate (13), the net rack (18) and the strip-shaped rotating blades are all made by mixing resin and graphene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210525097.2A CN114978359B (en) | 2022-05-14 | 2022-05-14 | Internet of things radio frequency interference detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210525097.2A CN114978359B (en) | 2022-05-14 | 2022-05-14 | Internet of things radio frequency interference detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114978359A true CN114978359A (en) | 2022-08-30 |
| CN114978359B CN114978359B (en) | 2023-08-04 |
Family
ID=82982432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210525097.2A Active CN114978359B (en) | 2022-05-14 | 2022-05-14 | Internet of things radio frequency interference detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114978359B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130016006A1 (en) * | 2010-09-10 | 2013-01-17 | Javad Ashjaee | Remote visualization of band-spectrum interference for a global navigation satellite system receiver |
| CN104581781A (en) * | 2014-12-25 | 2015-04-29 | 珠海世纪鼎利通信科技股份有限公司 | Cloud computing system realizing LTE (long term evolution) air interface data analysis |
| CN106548609A (en) * | 2015-09-21 | 2017-03-29 | 上海云表信息科技有限公司 | Intelligence instrument sends a duplicate to system |
| CN107566521A (en) * | 2017-09-28 | 2018-01-09 | 河南汇纳科技有限公司 | A kind of intelligent power distribution room environmental monitoring wireless sensing system based on LoRa |
| CN107705529A (en) * | 2017-09-28 | 2018-02-16 | 河南汇纳科技有限公司 | A kind of mine wireless data acquisition device based on LoRa |
| US20190250678A1 (en) * | 2018-02-14 | 2019-08-15 | Samsung Electronics Co., Ltd. | Method and electronic device for controlling external electronic device through electromagnetic signal |
| WO2019213117A1 (en) * | 2018-05-01 | 2019-11-07 | Intermetro Communications, Inc. | Multiple active network wireless device |
| US20200295906A1 (en) * | 2019-03-11 | 2020-09-17 | Samsung Electronics Co., Ltd, | Method for controlling frequency band for communication and electronic device thereof |
| CN215990935U (en) * | 2021-10-13 | 2022-03-08 | 广西广播电视技术中心南宁分中心 | Frequency modulation is broadcast supervisory equipment fully based on thing networked control |
| CN114221843A (en) * | 2021-10-28 | 2022-03-22 | 中国人民解放军海军大连舰艇学院 | Ephemeris-assisted-free polar orbit meteorological satellite LRPT signal automatic acquisition method |
-
2022
- 2022-05-14 CN CN202210525097.2A patent/CN114978359B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130016006A1 (en) * | 2010-09-10 | 2013-01-17 | Javad Ashjaee | Remote visualization of band-spectrum interference for a global navigation satellite system receiver |
| CN104581781A (en) * | 2014-12-25 | 2015-04-29 | 珠海世纪鼎利通信科技股份有限公司 | Cloud computing system realizing LTE (long term evolution) air interface data analysis |
| CN106548609A (en) * | 2015-09-21 | 2017-03-29 | 上海云表信息科技有限公司 | Intelligence instrument sends a duplicate to system |
| CN107566521A (en) * | 2017-09-28 | 2018-01-09 | 河南汇纳科技有限公司 | A kind of intelligent power distribution room environmental monitoring wireless sensing system based on LoRa |
| CN107705529A (en) * | 2017-09-28 | 2018-02-16 | 河南汇纳科技有限公司 | A kind of mine wireless data acquisition device based on LoRa |
| US20190250678A1 (en) * | 2018-02-14 | 2019-08-15 | Samsung Electronics Co., Ltd. | Method and electronic device for controlling external electronic device through electromagnetic signal |
| WO2019213117A1 (en) * | 2018-05-01 | 2019-11-07 | Intermetro Communications, Inc. | Multiple active network wireless device |
| US20200295906A1 (en) * | 2019-03-11 | 2020-09-17 | Samsung Electronics Co., Ltd, | Method for controlling frequency band for communication and electronic device thereof |
| CN215990935U (en) * | 2021-10-13 | 2022-03-08 | 广西广播电视技术中心南宁分中心 | Frequency modulation is broadcast supervisory equipment fully based on thing networked control |
| CN114221843A (en) * | 2021-10-28 | 2022-03-22 | 中国人民解放军海军大连舰艇学院 | Ephemeris-assisted-free polar orbit meteorological satellite LRPT signal automatic acquisition method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114978359B (en) | 2023-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202994964U (en) | UHF partial discharge sensor capable of closely cooperating with GIS basin-type insulator | |
| CN109412042A (en) | A kind of outdoor intelligent electrical equipment control cabinet and its anti-theft alarm system | |
| CN206893079U (en) | A kind of signal monitoring node and system | |
| CN114978359A (en) | Internet of things radio frequency interference detector | |
| CN105141378A (en) | Special terminal wireless public network communication test system and method | |
| CN105162534A (en) | System and method of concentrator for testing wireless public network communication | |
| CN105245296A (en) | Concentrator GPRS communication test system and method | |
| CN105307196A (en) | Wireless public network communication testing system and method for acquisition terminal | |
| CN109379861B (en) | High-reliability network transmission device | |
| CN209327509U (en) | A kind of GIS ultrahigh frequency partial discharge test device using automatic positioning technology | |
| CN209824268U (en) | Data acquisition device for electric power marketing | |
| CN212627925U (en) | Intelligent host for wireless broadcasting | |
| CN211929303U (en) | High-temperature-resistant modified plastic shell for capacitor | |
| CN210071965U (en) | Electric power instrument | |
| CN218958366U (en) | Cabinet temperature monitoring device | |
| CN213401911U (en) | Automatic detection device for power distribution equipment | |
| CN216626434U (en) | Clock signal generator with high tone quality | |
| CN210742342U (en) | Multi-channel detection converter for power equipment | |
| CN215042381U (en) | Recording device of refrigerator car | |
| CN213689880U (en) | Detection device applied to testing service time of radio battery | |
| CN214045628U (en) | Intelligent MIMO cooperative antenna terminal device | |
| CN214953774U (en) | Dustproof heat dissipation spectrum analyzer | |
| CN216700337U (en) | Online 2G3G4G5GNR pseudo base station interference detection frequency scanner system | |
| CN105203145B (en) | A kind of high voltage generating station detection device being provided with U-clamp groove | |
| CN219245674U (en) | Power equipment fault signal monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |