CN212433280U - Electric field instrument and thunder and lightning early warning device - Google Patents
Electric field instrument and thunder and lightning early warning device Download PDFInfo
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- CN212433280U CN212433280U CN202020938062.8U CN202020938062U CN212433280U CN 212433280 U CN212433280 U CN 212433280U CN 202020938062 U CN202020938062 U CN 202020938062U CN 212433280 U CN212433280 U CN 212433280U
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Abstract
The utility model provides an electric field appearance and thunder and lightning early warning device belongs to thunder and lightning monitoring early warning technical field. In the electric field instrument, a motor used for driving the grounding shielding sheet to rotate is selected as a direct current Hall motor, the Hall sensor is arranged, the Hall sensor is electrically connected with the electric field polarity detection circuit, a Hall pulse signal detected by the Hall sensor is obtained, the Hall pulse signal is shaped and amplified by the electric field polarity detection circuit to form a square wave signal, and the polarity of the electric field is judged according to the direction of the formed square wave signal. Through the hall pulse signal who obtains direct current hall motor, replace the traditional pulse signal who obtains through little leaf and photoelectric switch, simplified the structure of device, reduce the installation and examine the maintenance degree of difficulty, reduced the output load of motor to be favorable to prolonging the life of device. The lightning early warning device based on the electric field instrument can stably operate for a long time.
Description
Technical Field
The utility model belongs to the technical field of the thunder and lightning monitoring early warning, concretely relates to electric field appearance and thunder and lightning early warning device.
Background
The establishment of the lightning monitoring and early warning system can improve the accuracy and timeliness of lightning early warning, reduce casualties and property loss caused by lightning, and play an important role in developing lightning protection and disaster reduction work and ensuring social safety production.
The electric field instrument is an unavailable part in a lightning monitoring and early warning system, and mainly utilizes the principle that a conductor generates induced charges in an electric field, the electric field instrument sensor consists of a stator and a rotor, and the rotation of the rotor converts the induced charges of the stator into a voltage quantity which is in direct proportion to an atmospheric electric field. When the moving plate rotates, the fixed plate is alternately exposed to the atmosphere electric field, so that an alternating electric signal is generated, and the magnitude of the signal is in direct proportion to the intensity of the atmosphere electric field. Meanwhile, the electric field instrument can also acquire the polarity of the electric field at the same time, and the small blades arranged on the output shaft of the motor pass through the notch of the photoelectric switch to enable the photoelectric switch to generate a synchronous reference pulse signal, so that the polarity of the electric field is identified.
However, in the process of identifying the polarity of the electric field by the pulse signals generated by the small blades and the photoelectric switch, the small blades and the photoelectric switch need to be arranged, the small blades can accurately pass through the groove of the photoelectric switch, and an independent detection circuit needs to be arranged, so that the device has a complex structure and the service life is shortened. Meanwhile, the motor drives the movable plate and the small blades to rotate simultaneously, and the operation load of the motor is increased.
Disclosure of Invention
In view of this, the utility model provides an electric field appearance does not set up leaflet and photoelectric switch and can realize the detection to thunder and lightning electric field polarity to optimize electric field appearance structure, reduce motor operation load, extension electric field appearance life.
The utility model also provides a thunder and lightning early warning device to realize the long-time stable early warning of thunder and lightning.
The utility model provides a technical scheme that its technical problem adopted is:
an electric field instrument comprises an electric field instrument sensor, wherein the electric field instrument sensor comprises a mounting platform, an induction sheet, a grounding shielding sheet, a direct current Hall motor and a microprocessor integrated circuit board;
the induction sheet is arranged on the mounting platform and is insulated from the mounting platform;
the direct current Hall motor is arranged on one side of the mounting platform, which is far away from the induction sheet, the output end of the direct current Hall motor penetrates through the mounting platform and the induction sheet, and the direct current Hall motor is provided with a Hall sensor;
the grounding shielding sheet is connected to the end part of the output end of the direct current Hall motor and is arranged in parallel with the sensing sheet;
the micro-processing integrated circuit board at least comprises an electric field strength detection circuit and an electric field polarity detection circuit, the Hall sensor is electrically connected with the electric field polarity detection circuit through a first shielding cable, and the induction sheet is electrically connected with the electric field strength detection circuit through a second shielding cable.
Preferably, the microprocessor integrated circuit board is fixedly installed on one side, close to the direct current hall motor, of the installation platform through a plurality of support columns.
Preferably, the cross section of the induction sheet is circular, and a plurality of uniform and equidistant fan-shaped holes are formed in the induction sheet; the grounding shielding sheet and the induction sheet have the same structure.
Preferably, the electric field instrument further comprises a protective cover, the protective cover is a semi-surrounding structure with an opening at one end, the mounting platform is detachably connected with the protective cover, a closed mounting cavity can be formed by the mounting platform and the protective cover, and the direct current hall motor and the micro-processing integrated circuit board are accommodated in the mounting cavity.
Preferably, the shield is connected to the mounting platform by a screw thread, a snap fit or a self-contained bolt.
Preferably, the electric field instrument still includes the bracing piece, the upper end of bracing piece sets up the installation department, the protection casing invert install in on the installation department.
The lightning early warning device comprises the electric field instrument, a front-end controller and an upper computer, wherein the front-end controller is electrically connected with the electric field instrument, and the upper computer is electrically connected with the front-end controller.
Preferably, the lightning early warning device comprises at least two groups of electric field instruments.
According to the above technical scheme, the utility model provides an electric field appearance and thunder and lightning early warning device, its beneficial effect is: in the electric field instrument, a motor used for driving the grounding shielding sheet to rotate is a direct current Hall motor, and the electric field instrument is provided with a Hall sensor which is electrically connected with an electric field polarity detection circuit (for example, the electric field polarity detection circuit comprises a phase sensitive detector, a low-pass filter and an amplifier). And acquiring a Hall pulse signal of the direct current Hall motor detected by the Hall sensor, shaping and amplifying the Hall pulse signal by an electric field polarity detection circuit to form a square wave signal, and judging the polarity of the electric field according to the direction of the formed square wave signal. The utility model discloses an acquire direct current hall motor's hall pulse signal, replace the traditional pulse signal who acquires through little blade and photoelectric switch, simplified the structure of device, reduce the installation and examine the maintenance degree of difficulty, reduced the output load of motor to be favorable to extension means's life. The lightning early warning device based on the electric field instrument can stably operate for a long time.
Drawings
FIG. 1 is a schematic diagram of the structure of an electric field meter.
Fig. 2 is a schematic sectional view taken along line a-a in fig. 1.
Fig. 3 is a partially enlarged view of a portion a shown in fig. 2.
Fig. 4 is a schematic structural view of an electric field meter sensor.
FIG. 5 is a schematic cross-sectional view of an electric field meter sensor.
FIG. 6 is a schematic diagram of the electrical connections of the electric field meter in one embodiment.
In the figure: the electric field instrument comprises an electric field instrument 10, an electric field instrument sensor 100, a mounting platform 110, an induction sheet 120, a grounding shielding sheet 130, a direct current Hall motor 140, a Hall sensor 141, a microprocessor integrated circuit board 150, an electric field strength detection circuit 151, an electric field polarity detection circuit 152, a first shielding cable 160, a second shielding cable 170, a support column 180, a protective cover 200, a mounting cavity 210, a support rod 300, a mounting part 310, a front-end controller 20 and an upper computer 30.
Detailed Description
The following combines the drawings of the utility model to further elaborate the technical scheme and technical effect of the utility model.
Referring to fig. 1 to 5, in an embodiment, an electric field instrument 10 for acquiring a change of a ground electric field and a polarity of the electric field includes an electric field instrument sensor 100, where the electric field instrument sensor 100 includes a mounting platform 110, an induction plate 120, a grounding shielding plate 130, a dc hall motor 140, and a microprocessor integrated circuit board 150. The sensing piece 120 is mounted on the mounting platform 110 and insulated from the mounting platform 110. The direct current hall motor 140 is installed on one side of the installation platform 110 departing from the sensing piece 120, an output end of the direct current hall motor runs through the installation platform 110 and the sensing piece 120, and the direct current hall motor 140 is provided with a hall sensor 141. The grounding shield 130 is connected to an end of an output end of the dc hall motor 140, and is parallel to the sensing strip 120. The micro-processing integrated circuit board 150 at least comprises an electric field strength detection circuit 151 and an electric field polarity detection circuit 152, the hall sensor 141 is electrically connected to the electric field polarity detection circuit 152 through a first shielding cable 160, and the sensing piece 120 is electrically connected to the electric field strength detection circuit 151 through a second shielding cable 170. The cross section of the induction sheet 120 is circular, and a plurality of uniform and equidistant fan-shaped holes are formed in the induction sheet 120. The ground shield 130 has the same structure as the sensing tab 120.
In one aspect, the dc hall motor 140 drives the grounding shield 130 to rotate, and the sensing strip is alternately shielded or exposed when the grounding shield 130 rotates, so as to generate an induced alternating signal in the electric field. The generated alternating signal is captured, and the current relative electric field intensity can be obtained through amplification, filtering and other processing. When the electric field intensity changes, the generated alternating signal changes suddenly, so that whether thunder approaches or not or the early warning level of the thunder is judged.
Referring to fig. 6, on the other hand, the hall pulse signal of the dc hall motor 140 detected by the hall sensor 141 is obtained, and is shaped and amplified by the electric field polarity detection circuit 152 to form a square wave signal. For example, the micro-processing integrated circuit board 150 is provided with a phase sensitive detector, a low pass filter and an amplifier, and the hall pulse signal sequentially passes through the phase sensitive detector, the low pass filter and the amplifier to form the square wave signal. The polarity of the electric field is judged by the direction of the formed square wave signal. Through the hall pulse signal who obtains direct current hall motor 140, replace the traditional pulse signal who obtains through little blade and photoelectric switch, simplified the structure of device, reduce the installation and examine and repair the degree of difficulty, reduced the output load of motor to be favorable to prolonging the life of device.
In order to further make the structure of the electric field instrument 10 compact, the micro-processing integrated circuit board 150 is fixedly mounted on one side of the mounting platform 110 close to the dc hall motor 140 through a plurality of supporting columns 180. The micro-processing integrated circuit board 150 is integrated on the electric field instrument, so that the electric field instrument is compact in structure, the lengths of the first shielding cable 160 and the second shielding cable 170 are shortened, and the electric field strength and the detection rate and the accuracy of the polarity of the electric field are improved.
In one embodiment, the electric field apparatus 10 further comprises a protective cover 200 to protect the electric field apparatus sensor 100 for use in severe weather conditions, such as severe rain, snow, and hail. The protective cover 200 is a semi-surrounding structure with an opening at one end, the mounting platform 110 is detachably connected to the protective cover 200, the mounting platform 110 and the protective cover 200 can form a closed mounting cavity 210, and the direct current hall motor 140 and the micro-processing integrated circuit board 150 are accommodated in the mounting cavity 210. For example, the shield 200 may be threaded, snap-fit, or self-contained bolted to the mounting platform 110. In one aspect, after the mounting platform 110 is connected to the protective cover 200, the sensing tab 120 and the ground shield 130 are located outside the mounting platform 110, so that the sensing tab 120 can be exposed to the air. On the other hand, the dc hall motor 140, the micro-processing integrated circuit board 150 and related circuits are all accommodated in the relatively sealed mounting cavity 210, so as to protect the compact components such as the dc hall motor 140, the micro-processing integrated circuit board 150 and the like, and further prolong the service life of the device.
In another embodiment, the electric field instrument 10 further includes a supporting rod 300, a mounting portion 310 is disposed at an upper end of the supporting rod 300, and the protective cover 200 is mounted on the mounting portion 310 in an inverted manner. The height of the support bar 300 is about 1.5m, and the support bar 300 is set according to actual detection requirements, and provides a place for installing, suspending and fixing the electric field instrument 10. Protection casing 200 invert install in on the installation department 310, be favorable to right electric field appearance sensor 100 protects, prevents rain and snow, hail, strong wind etc. from to electric field appearance causes the damage.
Referring to fig. 6, in an embodiment, a lightning early warning device includes the electric field instrument 10, a front-end controller 20 and an upper computer 30, wherein the front-end controller 20 is electrically connected to the electric field instrument 10, and the upper computer 30 is electrically connected to the front-end controller 20. That is, stable lightning field intensity data and stable lightning field polarity data are acquired through the electric field instrument 10, the data are converted (for example, converted through an a/D converter) to form transmittable signals, the transmittable signals are transmitted to the upper computer 30 in a wired (for example, RS485 cable) or wireless (for example, Zigbee, LORA, GPS, and the like) form, and display, analysis, storage, early warning, and the like are completed on the upper computer, so that remote lightning monitoring and early warning are realized.
In an embodiment, the lightning early warning device includes at least two sets of the electric field instruments 10 as described above, and the electric field instruments 10 are all electrically connected to the upper computer 30 through the front-end controller 20, so as to realize regional lightning monitoring and early warning.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. An electric field instrument is characterized by comprising an electric field instrument sensor, wherein the electric field instrument sensor comprises a mounting platform, an induction sheet, a grounding shielding sheet, a direct current Hall motor and a microprocessing integrated circuit board;
the induction sheet is arranged on the mounting platform and is insulated from the mounting platform;
the direct current Hall motor is arranged on one side of the mounting platform, which is far away from the induction sheet, the output end of the direct current Hall motor penetrates through the mounting platform and the induction sheet, and the direct current Hall motor is provided with a Hall sensor;
the grounding shielding sheet is connected to the end part of the output end of the direct current Hall motor and is arranged in parallel with the sensing sheet;
the micro-processing integrated circuit board at least comprises an electric field strength detection circuit and an electric field polarity detection circuit, the Hall sensor is electrically connected with the electric field polarity detection circuit through a first shielding cable, and the induction sheet is electrically connected with the electric field strength detection circuit through a second shielding cable.
2. The electric field instrument of claim 1, wherein the micro-processing integrated circuit board is fixedly mounted on a side of the mounting platform adjacent to the dc hall motor by a plurality of support posts.
3. The electric field instrument of claim 1, wherein the cross section of the sensing piece is circular, and a plurality of uniform and equidistant fan-shaped holes are formed in the sensing piece; the grounding shielding sheet and the induction sheet have the same structure.
4. The electric field instrument according to claim 1, further comprising a protective cover, wherein the protective cover is a semi-enclosed structure with an opening at one end, the mounting platform is detachably connected with the protective cover, the mounting platform and the protective cover can form a closed mounting cavity, and the direct current hall motor and the micro-processing integrated circuit board are accommodated in the mounting cavity.
5. The electric field instrument of claim 4, wherein the shield is coupled to the mounting platform by threads, snaps, or self-contained bolts.
6. The electric field instrument of claim 4, further comprising a support rod, wherein a mounting portion is provided at an upper end of the support rod, and the shield is mounted upside down on the mounting portion.
7. A lightning early warning device, characterized by comprising the electric field instrument as set forth in any one of claims 1 to 6, a front-end controller and an upper computer, wherein the front-end controller is electrically connected with the electric field instrument, and the upper computer is electrically connected with the front-end controller.
8. The lightning early warning device of claim 7, comprising at least two sets of electric field meters as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020938062.8U CN212433280U (en) | 2020-05-28 | 2020-05-28 | Electric field instrument and thunder and lightning early warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020938062.8U CN212433280U (en) | 2020-05-28 | 2020-05-28 | Electric field instrument and thunder and lightning early warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212433280U true CN212433280U (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020938062.8U Active CN212433280U (en) | 2020-05-28 | 2020-05-28 | Electric field instrument and thunder and lightning early warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212433280U (en) |
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2020
- 2020-05-28 CN CN202020938062.8U patent/CN212433280U/en active Active
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