CN112730966A - Intelligent thunder and lightning recorder - Google Patents
Intelligent thunder and lightning recorder Download PDFInfo
- Publication number
- CN112730966A CN112730966A CN202011615535.1A CN202011615535A CN112730966A CN 112730966 A CN112730966 A CN 112730966A CN 202011615535 A CN202011615535 A CN 202011615535A CN 112730966 A CN112730966 A CN 112730966A
- Authority
- CN
- China
- Prior art keywords
- electrically connected
- host
- circuit
- lightning
- terminal
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16528—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values using digital techniques or performing arithmetic operations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/30—Structural combination of electric measuring instruments with basic electronic circuits, e.g. with amplifier
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/17—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values giving an indication of the number of times this occurs, i.e. multi-channel analysers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/175—Indicating the instants of passage of current or voltage through a given value, e.g. passage through zero
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
Abstract
The invention discloses an intelligent thunder and lightning recorder which comprises a host shell, wherein a host circuit board is arranged in the host shell, a microprocessor module, an analog-to-digital conversion circuit I, an integrator circuit, a lightning current receiver and a receiver interface are arranged on the host circuit board, the microprocessor module is electrically connected with the analog-to-digital conversion circuit I, the analog-to-digital conversion circuit I is electrically connected with the integrator circuit, the integrator circuit is electrically connected with the lightning current receiver, a lightning current sensor is electrically connected with the receiver interface, and the receiver interface is arranged on the lightning current receiver; a lightning current sensor formed by a host machine based on a Rogowski coil is designed with an active integration circuit, the active integration Rogowski coil adopts a high-performance operational amplifier to form an analog integrator, when the active integration Rogowski coil works at low frequency, because signals output by the coil are weak, the passive integrator cannot acquire the weak signals, and the operational amplifier impedance of the active integrator is approximate to infinity, so that the active integration Rogowski coil is suitable for low-frequency signal acquisition.
Description
Technical Field
The invention belongs to the technical field of lightning protection detection, and particularly relates to an intelligent lightning wave recorder.
Background
When lightning current passes through a discharge channel provided with a waveform recorder, a Rogowski coil converts a current signal into a voltage signal through an integrating circuit and transmits the voltage signal to an internal circuit, the internal circuit generates a trigger signal to wake up a central processing unit (a microprocessor module), the central processing unit reads waveform information which is changed into a digital signal for the last time through an A/D conversion module (an analog-to-digital conversion module), the information is temporarily stored in a DMA register and then is transmitted through an external communication module, circuits of the existing wave recorder are integrating circuits which are divided into an active integrating circuit and a passive integrating circuit, the passive integrating Rogowski coil adopts RC passive integration, the circuit structure is simple, higher sensitivity and lower limit cannot be obtained simultaneously, and the lower limit frequency of the integration cannot be made very low under the condition of certain sensitivity, only when the integral time constant RC > T (signal period), the approximate integral effect can be obtained, the output precision is poor, the output amplitude is small at the moment, the signal to noise ratio is improved disadvantageously, the measurement bandwidth of the passive integral flexible Roche coil is not enough, the signal of transient current cannot be effectively transmitted, and the waveform is easy to distort at a low frequency band.
The existing wave recorder also has the problems of too low sampling frequency and incomplete waveform restoration, because the impact time of a lightning current wave head is extremely short and the speed is extremely high, compared with the conventional ADC (analog to digital converter) sampling, the sampling speed of the lightning current waveform is higher, the precision is higher, and the number of points is more. Therefore, a high-speed data acquisition scheme needs to be designed to cope with the characteristics of high lightning current impact speed and short lightning current impact time. Through analysis of a lightning current waveform, the wave head time of a standard 8/20 lightning wave is only 8 microseconds, according to the widely applied nyquist sampling theorem, in order to achieve the purpose of undistorted sampling, the sampling frequency should be above 2.5kHz, and according to engineering experience, at least 50 points should be guaranteed to be sampled within 8 microseconds of the wave head, so that the sampling frequency is required to be above 6.25MHz, the signal efficiency is low, no special processing method exists for interference signals, the device efficiency is low, and the response speed is slow.
Disclosure of Invention
The invention aims to provide an intelligent thunder and lightning recorder to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the intelligent thunder and lightning recorder comprises a host shell, a host circuit board is arranged inside the host shell, a thunder current sensor is arranged above the outside of the host shell, a sensor lead is connected to the outside of the thunder current sensor, a sensor connector is arranged at the bottom end of the sensor lead, a sensor connector b is fixedly connected with a receiver interface, a microprocessor module, an analog-to-digital conversion circuit I, an integrator circuit, a thunder current receiver and a receiver interface are further mounted on the host circuit board, the microprocessor module is electrically connected with the analog-to-digital conversion circuit I, the analog-to-digital conversion circuit I is electrically connected with the integrator circuit, the integrator circuit is electrically connected with the thunder current receiver, the thunder current sensor is electrically connected with the receiver interface, the receiver interface is arranged on the thunder current receiver, and a power supply terminal, a power supply terminal and a lightning current receiver are further arranged below the host circuit, The power supply terminal comprises a first contact terminal, two contact terminals and a communication terminal, the power supply terminal is electrically connected with a circuit conversion module, the circuit conversion module is electrically connected with a microprocessor module, the circuit conversion module is electrically connected with a touch display screen, the microprocessor module is electrically connected with the touch display screen, the first contact terminal and the two contact terminals b are electrically connected with a contact controller, the contact controller is electrically connected with the microprocessor module, the communication terminal is electrically connected with the communication module, and the communication module is electrically connected with the microprocessor module.
Preferably, the surface of the host circuit board is further provided with a DMA register, and the DMA register is electrically connected with the microprocessor module.
Preferably, the microprocessor module is electrically connected with the communication module, and the first analog-to-digital conversion circuit is electrically connected with the communication module.
Preferably, the integrator circuit is electrically connected to the peak detection circuit, the peak detection circuit is electrically connected to the second analog-to-digital conversion circuit, and the second analog-to-digital conversion circuit is electrically connected to the microprocessor module.
Preferably, the surface of the host circuit board is further provided with an SD card, and the SD card is electrically connected with the microprocessor module.
Preferably, the surface of the host circuit board is further provided with a power lamp and a communication lamp, the power lamp and the communication lamp are both electrically connected with an indicator lamp driver, the indicator lamp driver is electrically connected with the microprocessor module, and the power lamp and the communication lamp penetrate through the inner wall of the host shell and extend to the outer side of the front surface of the host shell.
Preferably, the upper end and the lower end of the host shell are respectively and fixedly provided with an upper shell cover and a lower shell cover, and the front surfaces of the upper shell cover and the lower shell cover are respectively provided with an upper cover mounting hole and a lower cover mounting hole.
Preferably, a terminal flip cover is arranged below the host shell, the terminal flip cover is movably connected below the bottom surface of the host shell, and the terminal flip cover completely covers the power supply terminal, the communication terminal, the contact one terminal and the contact two terminals.
Preferably, a housing panel is fixedly mounted on the front surface of the host housing, a rectangular groove is formed in the front surface of the housing panel, and the touch display screen passes through the rectangular groove and extends to the outside of the front surface of the host housing.
Preferably, the lightning current sensor has a ring shape.
Compared with the prior art, the invention has the beneficial effects that:
1. an active integration circuit is designed based on a flexible Rogowski coil, the active integration Rogowski coil adopts a high-performance operational amplifier to form an analog integrator, when the active integration Rogowski coil works at low frequency, because signals output by the coil are very weak (can reach below mV), the passive integrator cannot acquire the weak signals, the operational amplifier impedance of the active integrator is approximate to infinity, the active integration circuit is suitable for low-frequency signal acquisition, because the operational amplifier has high input impedance and large open-loop gain, the active integration circuit has 'virtual short' and 'virtual break' properties, higher integration precision can be effectively ensured, higher bandwidth and precision can be obtained by adopting an active integration mode, and the detected current waveform can be effectively reduced.
2. The method for sampling the lightning current waveform by utilizing the built-in three-path 12-bit ADC time-division multiplexing sampling method of the STM32F407 single chip microcomputer can achieve the sampling speed of 7.2MHz and the sampling interval of 0.14 microsecond. The method has the advantages that the acquired data are stored in the register of the single chip microcomputer by using the DMA while the single chip microcomputer samples, so that the data loss caused by the fact that the sampling data cannot be processed in time is avoided, in addition, the method effectively avoids the speed matching problem between ADC sampling output and data receiving and storing, and the original complex high-speed ADC sampling and high-speed data storage problem is changed into simple and convenient to realize to a certain extent.
3. A sampling method of comparing preset values is adopted for judging the lightning stroke waveform, whether the acquired signals are useful lightning signals is judged through comparison with the preset values, only the acquired effective lightning impulse signals are reserved, and the efficiency and the response speed of the device are improved.
4. The main parameters of the device for collecting thunder are complete: and measuring the energy of the lightning current, the peak value of the lightning current waveform, the wave head time and the half-wave time of the lightning current, and recording the lightning current waveform, the lightning stroke times and the lightning stroke time point.
Drawings
FIG. 1 is a schematic view of the external structure of the kit according to the present invention;
FIG. 2 is an exploded view of the host of the present invention;
fig. 3 is a schematic diagram of the principle structure of the whole machine point of the present invention.
In the figure: 1. a host housing; 1a, a housing panel; 2. an upper cover of the shell; 2a, mounting holes of the upper cover; 3. a lower cover of the housing; 3a, a lower cover mounting hole; 4. a terminal flip; 5. a lightning current sensor; 5a, a sensor lead; 5b, a sensor joint; 6. a host circuit board; 7. a microprocessor module; 8. a power conversion module; 8a, a power supply terminal; 9. a touch display screen; 10. an analog-to-digital conversion circuit I; 11. an integrator circuit; 12. a lightning current receiver; 12a, a receiver interface; 13. a second analog-to-digital conversion circuit; 14. a peak detection circuit; 15. a communication module; 15a, a communication terminal; 16. a contact controller; 16a, a contact one terminal; 16b, contact terminals; 17. an SD card; 18. an indicator light driver; 18a, a power supply lamp; 18b, a communication lamp; 19. a DMA register.
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. 1-3, the present invention provides a technical solution: an intelligent thunder and lightning recorder comprises a host shell 1, a host circuit board 6 is arranged inside the host shell 1, a thunder current sensor 5 is arranged above the outside of the host shell 1, a sensor lead 5a is connected outside the thunder current sensor 5, a sensor connector 5b is arranged at the bottom end of the sensor lead 5a, the sensor connector 5b is fixedly connected with a receiver interface 12a, a microprocessor module 7, an analog-to-digital conversion circuit I10, an integrator circuit 11, a thunder current receiver 12 and a receiver interface 12a are further arranged on the host circuit board 6, the microprocessor module 7 is electrically connected with the analog-to-digital conversion circuit I10, the analog-to-digital conversion circuit I10 is electrically connected with the integrator circuit 11, the integrator circuit 11 is electrically connected with the thunder current receiver 12, the thunder current sensor 5 is electrically connected with the receiver interface 12a, and the receiver interface 12a is arranged on the thunder current receiver 12, the host computer circuit board 6 is also provided with a power supply terminal 8a, a first contact terminal 16a, a second contact terminal 16b and a communication terminal 15a below, the power supply terminal 8a is electrically connected with the circuit conversion module 8, the circuit conversion module 8 is electrically connected with the microprocessor module 7, the circuit conversion module 8 is electrically connected with the touch display screen 9, the microprocessor module 7 is electrically connected with the touch display screen 9, the first contact terminal 16a and the second contact terminal 16b are both electrically connected with the contact controller 16, the contact controller 16 is electrically connected with the microprocessor module 7, the communication terminal 15a is electrically connected with the communication module 15, and the communication module 15 is electrically connected with the microprocessor module 7.
In this embodiment, lightning strikes the lightning current sensor 5, the generated current is transmitted to the inside of the lightning current receiver 12 through the sensor lead 5a and the receiver interface 12a, then transmitted to the inside of the integrator circuit 11, and finally transmitted to the inside of the microprocessor module 7 through the analog-to-digital conversion circuit one 10 to perform the same analysis and dispersion processing. The operational amplifier has high input impedance, large open-loop gain, virtual short property and virtual disconnection property, can effectively ensure higher integral precision, can obtain higher bandwidth and precision by adopting an active integral mode, and can effectively restore the waveform of the measured current.
Specifically, the surface of the host circuit board 6 is further provided with a DMA register 19, and the DMA register 19 is electrically connected with the microprocessor module 7.
In the embodiment, the thunder current waveform is sampled by using a three-way 12-bit ADC time-division multiplexing sampling method built in an STM32F407 single chip microcomputer, and the triple ADC sampling method can reach the sampling speed of 7.2MHz and the sampling interval is 0.14 microseconds. The method has the advantages that the acquired data are stored in the register of the single chip microcomputer by using the DMA while the single chip microcomputer samples, so that the data loss caused by the fact that the sampling data cannot be processed in time is avoided, in addition, the method effectively avoids the speed matching problem between ADC sampling output and data receiving and storing, and the original complex high-speed ADC sampling and high-speed data storage problem is changed into simple and convenient to realize to a certain extent.
Specifically, the microprocessor module 7 is electrically connected to the communication module 15, and the first analog-to-digital conversion circuit 10 is electrically connected to the communication module 15.
In this embodiment, the collected data may be transmitted to the outside.
Specifically, the integrator circuit 11 is electrically connected to the peak detection circuit 14, the peak detection circuit 14 is electrically connected to the second analog-to-digital conversion circuit 13, and the second analog-to-digital conversion circuit 13 is electrically connected to the microprocessor module 7.
In the embodiment, a sampling method of comparing preset values is adopted for judging the lightning stroke waveform, whether the collected signals are useful lightning signals is judged by comparing the lightning stroke waveform with the preset values, only the collected effective lightning impulse signals are reserved, and the efficiency and the response speed of the device are improved.
Specifically, the surface of the host circuit board 6 is further provided with an SD card 17, and the SD card 17 is electrically connected with the microprocessor module 7.
In this embodiment, the data is further stored.
Specifically, the surface of the host circuit board 6 is further provided with a power lamp 18a and a communication lamp 18b, the power lamp 18a and the communication lamp 18b are both electrically connected to the indicator driver 18, the indicator driver 18 is electrically connected to the microprocessor module 7, and the power lamp 18a and the communication lamp 18b penetrate through the inner wall of the host housing 1 and extend to the outer side of the front surface of the host housing 1.
In this embodiment, when the peak value reaches a certain level, the power lamp 18a and the communication lamp 18b will give an alarm, thereby playing a good warning role.
Specifically, the upper end and the lower end of the host casing 1 are respectively and fixedly provided with a casing upper cover 2 and a casing lower cover 3, and the front surfaces of the casing upper cover 2 and the casing lower cover 3 are respectively provided with an upper cover mounting hole 2a and a lower cover mounting hole 3 a.
In this embodiment, the installation of the device as a whole is facilitated.
Specifically, a terminal flip 4 is arranged below the host housing 1, the terminal flip 4 is movably connected below the bottom surface of the host housing 1, and the terminal flip 4 completely covers the power supply terminal 8a, the communication terminal 15a, the contact one terminal 16a and the contact two terminal 16 b.
In this embodiment, each port is effectively protected.
Specifically, a housing panel 1a is fixedly mounted on the front surface of the host housing 1, a rectangular groove is formed in the front surface of the housing panel 1a, and the touch display screen 9 passes through the rectangular groove and extends to the outside of the front surface of the host housing 1.
In this embodiment, the parameters are conveniently adjusted by touching the display screen 9.
Specifically, the lightning current sensor 5 is circular, and when the lightning current sensor is installed, a ground wire of an external lightning protection device penetrates into the circular ring, so that the lightning current sensor can acquire a lightning current signal when the lightning current flows through the ground wire.
In the embodiment, the conductive material has better conductivity, so that the conductive effect is better.
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 (10)
1. The utility model provides an intelligence thunder and lightning oscillograph, includes host computer shell (1), its characterized in that: the lightning current sensor is characterized in that a host circuit board (6) is arranged inside the host shell (1), a lightning current sensor (5) is arranged above the outside of the host shell (1), a sensor lead (5a) is connected to the outside of the lightning current sensor (5), a sensor connector (5b) is arranged at the bottom end of the sensor lead (5a), the sensor connector (5b) is fixedly connected with a receiver interface (12a), a microprocessor module (7), an analog-to-digital conversion circuit I (10), an integrator circuit (11), a lightning current receiver (12) and a receiver interface (12a) are further arranged on the host circuit board (6), the microprocessor module (7) is electrically connected with the analog-to-digital conversion circuit I (10), the analog-to-digital conversion circuit I (10) is electrically connected with the integrator circuit (11), and the integrator circuit (11) is electrically connected with the lightning current receiver (12), the lightning current sensor (5) is electrically connected with a receiver interface (12a), the receiver interface (12a) is arranged on a lightning current receiver (12), a power supply terminal (8a), a contact one terminal (16a), a contact two terminal (16b) and a communication terminal (15a) are further arranged below the host circuit board (6), the power supply terminal (8a) is electrically connected with the circuit conversion module (8), the circuit conversion module (8) is electrically connected with the microprocessor module (7), the circuit conversion module (8) is electrically connected with the touch display screen (9), the microprocessor module (7) is electrically connected with the touch display screen (9), the contact one terminal (16a) and the contact two terminal (16b) are both electrically connected with the contact controller (16), and the contact controller (16) is electrically connected with the microprocessor module (7), the communication terminal (15a) is electrically connected with the communication module (15), and the communication module (15) is electrically connected with the microprocessor module (7).
2. The intelligent thunder and lightning recorder of claim 1, characterized in that: the surface of the host circuit board (6) is also provided with a DMA register (19), and the DMA register (19) is electrically connected with the microprocessor module (7).
3. The intelligent thunder and lightning recorder of claim 1, characterized in that: the microprocessor module (7) is electrically connected with the communication module (15), and the first analog-to-digital conversion circuit (10) is electrically connected with the communication module (15).
4. The intelligent thunder and lightning recorder of claim 1, characterized in that: the integrator circuit (11) is electrically connected with the peak detection circuit (14), the peak detection circuit (14) is electrically connected with the second analog-to-digital conversion circuit (13), and the second analog-to-digital conversion circuit (13) is electrically connected with the microprocessor module (7).
5. The intelligent thunder and lightning recorder of claim 1, characterized in that: the surface of the host circuit board (6) is also provided with an SD card (17), and the SD card (17) is electrically connected with the microprocessor module (7).
6. The intelligent thunder and lightning recorder of claim 1, characterized in that: the surface of the host circuit board (6) is further provided with a power lamp (18a) and a communication lamp (18b), the power lamp (18a) and the communication lamp (18b) are both electrically connected with an indicator lamp driver (18), the indicator lamp driver (18) is electrically connected with the microprocessor module (7), and the power lamp (18a) and the communication lamp (18b) penetrate through the inner wall of the host shell (1) and extend to the outer side of the front surface of the host shell (1).
7. The intelligent thunder and lightning recorder of claim 1, characterized in that: the upper end and the lower end of the host shell (1) are respectively and fixedly provided with an upper shell cover (2) and a lower shell cover (3), and the front surfaces of the upper shell cover (2) and the lower shell cover (3) are respectively provided with an upper cover mounting hole (2a) and a lower cover mounting hole (3 a).
8. The intelligent thunder and lightning recorder of claim 1, characterized in that: the host computer shell (1) is provided with a terminal flip cover (4) below, the terminal flip cover (4) is movably connected below the bottom surface of the host computer shell (1), and the terminal flip cover (4) completely covers a power supply terminal (8a), a communication terminal (15a), a contact terminal (16a) and a contact terminal (16 b).
9. The intelligent thunder and lightning recorder of claim 1, characterized in that: the front surface of the host shell (1) is fixedly provided with a shell panel (1a), the front surface of the shell panel (1a) is provided with a rectangular groove, and the touch display screen (9) penetrates through the rectangular groove and extends to the outside of the front surface of the host shell (1).
10. The intelligent thunder and lightning recorder of claim 1, characterized in that: the lightning current sensor (5) is annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011615535.1A CN112730966A (en) | 2020-12-30 | 2020-12-30 | Intelligent thunder and lightning recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011615535.1A CN112730966A (en) | 2020-12-30 | 2020-12-30 | Intelligent thunder and lightning recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112730966A true CN112730966A (en) | 2021-04-30 |
Family
ID=75611825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011615535.1A Pending CN112730966A (en) | 2020-12-30 | 2020-12-30 | Intelligent thunder and lightning recorder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112730966A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892556A (en) * | 2021-08-16 | 2022-08-12 | 苏州工业园区科佳自动化有限公司 | Novel wisdom zebra crossing system |
| CN114892556B (en) * | 2021-08-16 | 2024-04-26 | 苏州工业园区科佳自动化有限公司 | Novel wisdom zebra stripes system |
-
2020
- 2020-12-30 CN CN202011615535.1A patent/CN112730966A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892556A (en) * | 2021-08-16 | 2022-08-12 | 苏州工业园区科佳自动化有限公司 | Novel wisdom zebra crossing system |
| CN114892556B (en) * | 2021-08-16 | 2024-04-26 | 苏州工业园区科佳自动化有限公司 | Novel wisdom zebra stripes system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104749498B (en) | A kind of detection of Portable PD On-Line and diagnostic device | |
| CN201955434U (en) | Local discharge detection TEV (transient earth voltage) sensor of high-voltage switch cabinet | |
| CN101281152A (en) | Soil moisture sensor | |
| CN201955435U (en) | GIS (gas insulated substation) partial discharge routing inspection UHF (ultra high frequency) sensor | |
| CN214041539U (en) | Intelligent thunder and lightning recorder | |
| CN112730966A (en) | Intelligent thunder and lightning recorder | |
| CN202075374U (en) | Sleeve end shield discharging ultrasonic detection device | |
| CN211856738U (en) | Electromagnetic pulse radiation field test probe and test system | |
| CN102590719A (en) | Surface mounted device (SMD) sensor device for detecting local discharge of power cable terminal head | |
| CN201184893Y (en) | Apparatus for measuring lighting strike parameter | |
| CN104101778A (en) | 67GHz coaxial broadband peak power probe | |
| CN201225993Y (en) | Soil moisture sensor | |
| CN212137645U (en) | ADC acquisition circuit | |
| CN207586336U (en) | A kind of device of optocoupler time response detection | |
| CN211669283U (en) | Thunder and lightning monitoring devices | |
| CN204203393U (en) | Electric wire breaking point detection circuit | |
| CN203422137U (en) | Oil level measurement switching circuit | |
| CN208421116U (en) | A kind of voltage induced formula protection against electric shock circuit and anti-electric shock apparatus | |
| CN203705594U (en) | 10V switch cabinet internal discharge detector based on electromagnetic wave antenna reception array | |
| CN208421058U (en) | A kind of electronic type lightning arrester monitoring device | |
| CN102879650B (en) | Intelligent range-adjustable sandstorm electric field measuring system based on shielded probe | |
| CN202794345U (en) | Intelligent dust storm electric field measuring system with adjustable range based on shield probe | |
| CN212693945U (en) | Partial discharge power frequency synchronous sensor device | |
| CN114062856A (en) | Partial discharge power frequency synchronous sensor device | |
| CN214335123U (en) | Wireless multifunctional partial discharge detector |
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 |