CN212433281U - Electric field instrument capable of balancing strong wind interference and lightning early warning device - Google Patents
Electric field instrument capable of balancing strong wind interference and lightning early warning device Download PDFInfo
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- CN212433281U CN212433281U CN202020940341.8U CN202020940341U CN212433281U CN 212433281 U CN212433281 U CN 212433281U CN 202020940341 U CN202020940341 U CN 202020940341U CN 212433281 U CN212433281 U CN 212433281U
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Abstract
The utility model provides an electric field appearance and thunder and lightning early warning device that can balance strong wind interference, electric field appearance include bracing piece, probe protection casing, electric field appearance probe and the balanced subassembly of wind-force, and the balanced subassembly of wind-force includes that negative pressure pipe and negative pressure take place the piece, and negative pressure pipe one end intercommunication probe protection casing, and the entry is located between response piece and the ground connection shielding piece, and the negative pressure takes place the piece and connects the one end of keeping away from the probe protection casing in negative pressure pipe. Under the negative pressure, the airflow between the induction sheet and the grounding shielding sheet is disturbed and flows directionally to form airflow compensation, so that sudden speed change of the grounding shielding sheet caused by strong airflow in a single direction is avoided, the accuracy of electric field monitoring is improved, and the false alarm rate of the lightning early warning device is reduced. Simultaneously, the air current flows between response piece and the ground connection shielding piece, forms the strength and sweeps, avoids dust or haze granule to adsorb on the response face of response piece or ground connection shielding piece, further improves the accuracy of electric field monitoring, prolongs the life of electric field appearance.
Description
Technical Field
The utility model belongs to the technical field of the thunder and lightning monitoring early warning, concretely relates to can balance strong wind interference's electric field appearance and thunder and lightning early warning device.
Background
The establishment of the electric 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.
However, in the practical application process of the existing electric field instrument, if the existing electric field instrument meets strong wind weather, particularly in some mountain regions, the wind power is large, the wind direction is changed, the wind power is unstable, and the strong wind causes the rotation rate of the rotor to change, so that the monitored electric field intensity is unstable, and the false alarm rate of the lightning monitoring and early warning system is improved. On the other hand, the frequent weather conditions such as sand blown by the wind, haze and the like in partial areas cause the sand dust or haze particles of the enrichment part in the induction space formed between the moving plate and the fixed plate, so that the detection accuracy of the electric field instrument on the electric field intensity is reduced, and the false alarm rate of the lightning monitoring and early warning system is improved.
Disclosure of Invention
In view of this, the utility model provides an electric field appearance that can balance strong wind interference to solve the technical problem that special weather conditions such as strong wind, sand and dust and haze that exist among the prior art arouse that electric field appearance detection accuracy reduces, thunder and lightning monitoring and early warning system misstatement rate improves.
The utility model also provides a thunder and lightning early warning device to solve among the prior art technical problem that thunder and lightning alarm device misstatement rate is high.
The utility model provides a technical scheme that its technical problem adopted is:
an electric field instrument capable of balancing strong wind interference, comprising:
a support bar;
the probe protective cover is arranged at the upper end of the supporting rod;
the electric field instrument probe is accommodated in the probe protective cover and comprises an induction sheet and a grounding shielding sheet, and the induction sheet and the grounding shielding sheet are arranged in parallel; and
wind-force balance assembly, wind-force balance assembly includes that negative pressure pipe and negative pressure take place the piece, negative pressure pipe one end intercommunication the probe protection casing, and the entry is located the response piece with between the ground connection shielding piece, negative pressure take place the piece connect in negative pressure pipe keeps away from the one end of probe protection casing, and can make negative pressure produces in the negative pressure pipe.
Preferably, the probe protection cover comprises an inner cover and an outer cover, the outer cover is arranged on the outer side of the inner cover, an airflow guide cavity is formed between the outer cover and the inner cover, an airflow inlet is formed in the lower end of the inner cover and located between the sensing piece and the grounding shielding piece, and the negative pressure pipe is communicated with the airflow guide cavity.
Preferably, the negative pressure pipe is vertically arranged upwards, and the negative pressure generating piece is tubular and is vertically arranged above the negative pressure pipe.
Preferably, negative pressure generation piece is including setting gradually air current inlet section, negative pressure generation section and air current outlet section, the air current inlet section is the loudspeaker form, and to being close to one side undergauge of negative pressure generation section, air current outlet section is the horn mouth form, and to keeping away from one side hole enlargement of negative pressure generation section, negative pressure pipe intercommunication the negative pressure generation section.
Preferably, the negative pressure generating member is a venturi vacuum generator, and the negative pressure pipe is communicated with a vacuum suction port of the venturi vacuum generator.
Preferably, the negative pressure generating member is rotatable in a horizontal direction with respect to the negative pressure pipe; the negative pressure generating piece is also provided with a guide plate, and the guide plate can drive the negative pressure generating piece to rotate under the action of wind power, so that the airflow inlet of the negative pressure generating piece is opposite to the wind direction.
Preferably, the guide plate is provided at one end of the airflow outlet of the negative pressure generating member.
A lightning early warning device comprises the electric field instrument capable of balancing strong wind interference.
According to the above technical scheme, the utility model provides an electric field appearance and thunder and lightning early warning device that can balance strong wind interference, its beneficial effect is: the wind power balance assembly comprises a negative pressure pipe and a negative pressure generating piece, wherein the negative pressure pipe is connected with the probe protective cover, and an inlet is close to the induction sheet and the grounding shielding sheet. On one hand, under the action of negative pressure, airflow between the induction sheet and the grounding shielding sheet and nearby airflow is disturbed and flows directionally, so that when strong wind is met, the airflow passing between the induction sheet and the grounding shielding sheet and nearby airflow is forced to change the direction and flows towards the inlet of the negative pressure pipe to form airflow compensation, and therefore the situation that the grounding shielding sheet is suddenly accelerated or suddenly decelerated due to strong airflow in a single direction is avoided, the accuracy of electric field intensity monitoring is improved, and the false alarm rate of a lightning monitoring and early warning system is reduced. On the other hand, under the negative pressure effect, the air current via the response piece with flow between the ground connection shielding piece, form the strength and sweep to can prevent effectively that dust or haze granule from adsorbing the response piece or on the response face of ground connection shielding piece, further improve the accuracy of electric field strength monitoring, reduce thunder and lightning monitoring early warning system's misstatement rate, avoided the enrichment simultaneously to be in the response piece or dust or haze granule corruption on the response face of ground connection shielding piece the response piece or ground connection shielding piece, the life of extension electric field appearance.
Drawings
Fig. 1 is a schematic structural diagram of an electric field instrument capable of balancing strong wind interference.
FIG. 2 is a front view of an electric field instrument capable of balancing strong wind interference.
Fig. 3 is a schematic sectional view taken along line a-a of fig. 2.
Fig. 4 is a partially enlarged view of a portion a shown in fig. 3.
FIG. 5 is a schematic diagram of the structure of an E-field instrument probe.
Figure 6 is a schematic cross-sectional view of an electrometer probe.
Figure 7 is a bottom view of the electrometer probe.
FIG. 8 is a schematic diagram of the electrical connections of the lightning early warning device in one embodiment.
In the figure: the electric field instrument comprises an electric field instrument 10 capable of balancing strong wind interference, a support rod 100, a probe protective cover 200, a mounting cavity 201, an airflow guide cavity 202, an inner cover 210, an airflow inlet 211, an outer cover 220, an electric field instrument probe 300, an induction sheet 310, a grounding shielding sheet 320, a mounting platform 330, a direct current motor 340, a microprocessor integrated circuit board 350, a first shielding cable 360, a second shielding cable 370, a wind power balance assembly 400, a negative pressure pipe 410, a negative pressure generator 420, a guide plate 430, an airflow inlet section 421, a negative pressure generation section 422, an airflow outlet section 423, 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 and 2, in an embodiment, an electric field instrument 10 capable of balancing strong wind interference includes: the support rod 100, the probe protection cover 200, the electric field instrument probe 300 and the wind power balance assembly 400. The probe protection cover 200 is installed at the upper end of the support rod 100, the electric field instrument probe 300 is accommodated in the probe protection cover 200, the electric field instrument probe 300 includes an induction sheet 310 and a grounding shielding sheet 320, and the induction sheet 310 and the grounding shielding sheet 320 are arranged in parallel.
Wind-force balance assembly 400 includes negative pressure pipe 410 and negative pressure generation piece 420, negative pressure pipe 410 one end intercommunication probe protection casing 200, and the entry is located the response piece 310 with between the ground connection shielding piece 320, negative pressure generation piece 420 connect in negative pressure pipe 410 keeps away from the one end of probe protection casing 200, and can make produce the negative pressure in the negative pressure pipe 410.
On the one hand, under the negative pressure, the airflow between the sensing piece 310 and the grounding shielding piece 320 and nearby is disturbed and flows directionally, so that when strong wind is encountered, the airflow passing between the sensing piece 310 and the grounding shielding piece 320 and nearby is forced to change the direction and flows towards the inlet of the negative pressure tube 410 to form airflow compensation, thereby avoiding sudden acceleration or sudden deceleration of the grounding shielding piece 320 caused by strong airflow in a single direction, further improving the accuracy of electric field intensity monitoring and reducing the false alarm rate of the lightning monitoring and early warning system. On the other hand, under the negative pressure, the airflow flows between the induction sheet 310 and the grounding shielding sheet 320 to form pneumatic blowing, so that dust or haze particles can be effectively prevented from being adsorbed on the induction sheet 310 or the induction surface of the grounding shielding sheet 320, the accuracy of electric field intensity monitoring is further improved, the false alarm rate of the lightning monitoring and early warning system is reduced, meanwhile, the dust or haze particles enriched on the induction surface of the induction sheet 310 or the grounding shielding sheet 320 are prevented from corroding the induction sheet 310 or the grounding shielding sheet 320, and the service life of the electric field instrument is prolonged.
Referring to fig. 3 to 7, in particular, the field instrument probe 300 includes a mounting platform 330, an induction plate 310, a ground shield plate 320, a dc motor 340 and a micro-processing integrated circuit board 350. The sensing piece 310 is mounted on the mounting platform 330, and is insulated from the mounting platform 330. The dc motor 340 is installed on one side of the installation platform 330 departing from the sensing piece 310, an output end of the dc motor passes through the installation platform 330 and the sensing piece 310, and the grounding shielding piece 320 is connected to an end of the output end of the dc motor 340 and is parallel to the sensing piece 310. The cross section of the induction sheet 310 is circular, and a plurality of uniform and equidistant fan-shaped holes are formed in the induction sheet 310. The ground shield 320 has the same structure as the sensing tab 310. The dc motor 340 drives the ground shield 320 to rotate, and when the ground shield 320 rotates, the sensing piece is alternately shielded or exposed, 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.
In a preferred embodiment, the E-field instrument probe 300 can also acquire the polarity signal of the electric field simultaneously. In this case, the dc motor 340 is a hall motor having a hall sensor. The micro-processing integrated circuit board 350 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 360, and the induction sheet is electrically connected with the electric field strength detection circuit through a second shielding cable 370.
And acquiring a Hall pulse signal of the DC motor 340 detected by the Hall sensor, and shaping and amplifying the Hall pulse signal by an electric field polarity detection circuit to form a square wave signal. For example, the micro-processing integrated circuit board 350 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 motor 340, 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.
The mounting platform 330 is detachably connected to the probe protection cover 200, the mounting platform 330 and the protection cover 200 can form a closed mounting cavity 201, and the dc motor 340 and the micro-processing integrated circuit board 350 are accommodated in the mounting cavity 201. For example, the shield 200 and the mounting platform 330 may be threaded, snap-fit, or self-contained bolted. In one aspect, after the mounting platform 330 is connected to the shield cap 200, the sensing tab 310 and the ground shield 320 are located outside the mounting platform 330, so that the sensing tab 310 can be exposed to the air. On the other hand, the dc motor 340, the micro-processing integrated circuit board 350 and related circuits are all accommodated in the relatively sealed installation cavity 201, so as to protect the precision components such as the dc motor 340, the micro-processing integrated circuit board 350 and the like, and further prolong the service life of the device.
With continued reference to fig. 3 and 4, in a preferred embodiment, the probe protective cover 200 includes an inner cover 210 and an outer cover 220, the outer cover 220 is covered outside the inner cover 210, and forms an airflow guiding cavity 202 with the inner cover 210, the lower end of the inner cover 210 is opened with an airflow inlet 211, the airflow inlet 211 is located between the sensing piece 310 and the grounding shielding piece 320, and the negative pressure pipe 410 is communicated with the airflow guiding cavity 202.
Specifically, the lower end of the inner cover 210 is provided with the annular airflow inlet 211, and the height of the airflow inlet 211 is located between the sensing piece 310 and the grounding shielding piece 320. The inner cover 210 and the outer cover 220 form the airflow guide cavity 202 therebetween, and the negative pressure pipe 410 can communicate with any position of the airflow guide cavity 202. Under the action of negative pressure, the airflow between the sensing piece 310 and the grounding shielding piece 320 and below the grounding shielding piece 320 changes direction, enters the airflow guiding cavity 202 through the annular airflow inlet 211 along the periphery and the fan-shaped holes of the grounding shielding piece 320, and is discharged by the negative pressure pipe 410.
Generally, for the convenience of production and manufacture, the outer cover 220 having the airflow guide chamber 202 is covered on the outer side of the shield of the conventional electric field instrument, the inner wall of the outer cover 220 is close to the outer wall of the shield (the inner cover 210), and the lower end of the outer cover 220 is provided with an annular airflow inlet 211. An annular airflow inlet 211 is formed in the middle of the mounting platform 330, and when the mounting platform is mounted, the airflow inlet 211 of the outer cover 220 is aligned with the airflow inlet 211 of the mounting platform 330. That is to say, on the premise of not changing the installation structure of the traditional electric field instrument, the traditional electric field instrument can be upgraded and modified by the method, and the electric field instrument with low false alarm rate and the lightning early warning device are obtained.
For example, negative pressure generation piece 420 is including setting gradually air current inlet section 421, negative pressure generation section 422 and air current outlet section 423, air current inlet section 421 is the loudspeaker form, and to being close to one side undergauge of negative pressure generation section 422, air current outlet section 423 is the horn mouth form, and to keeping away from one side hole enlargement of negative pressure generation section 422, negative pressure pipe 410 intercommunication negative pressure generation section 422. When wind exists, the airflow enters from the airflow inlet section 421, is compressed, has a high flow speed, and is diffused and discharged from the airflow outlet section 423, and in the process, a suction acting force is formed at the negative pressure pipe 410 due to the superposition of a chimney effect and a venturi effect.
In order to further improve the wind power balance efficiency, the negative pressure generating member 420 is a venturi vacuum generator, the negative pressure pipe 410 is communicated with a vacuum suction inlet of the venturi vacuum generator, strong wind enters from an inlet of the venturi vacuum generator, a vacuum area is formed at the negative pressure pipe 410, air at an inlet of the negative pressure pipe 410 supplements the vacuum area to form airflow, the airflow direction at the inlet of the negative pressure pipe 410 is changed, and the sensing piece 310 and the grounding shielding piece 320 are purged.
To further improve the wind balance efficiency, the negative pressure generating member 420 can rotate in the horizontal direction with respect to the negative pressure pipe 410. The negative pressure generating member 420 is further provided with a guide plate 430, and the guide plate 430 can drive the negative pressure generating member 420 to rotate under the action of wind power, so that the airflow inlet of the negative pressure generating member 420 faces the wind direction. For example, the guide plate 430 is disposed at one end of the airflow outlet of the negative pressure generating member 420 to keep the airflow inlet of the negative pressure generating member 420 facing the wind direction in a strong wind state.
Referring to fig. 8, in another embodiment, a lightning early warning device includes the above-mentioned electric field instrument 10 capable of balancing strong wind interference.
Specifically, the lightning early warning device comprises the electric field instrument 10, a front-end controller 20 and an upper computer 30, wherein the front-end controller 20 is electrically connected with the electric field instrument 10, and the upper computer 30 is electrically connected with 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 capable of balancing strong wind interference, comprising:
a support bar;
the probe protective cover is arranged at the upper end of the supporting rod;
the electric field instrument probe is accommodated in the probe protective cover and comprises an induction sheet and a grounding shielding sheet, and the induction sheet and the grounding shielding sheet are arranged in parallel; and
wind-force balance assembly, wind-force balance assembly includes that negative pressure pipe and negative pressure take place the piece, negative pressure pipe one end intercommunication the probe protection casing, and the entry is located the response piece with between the ground connection shielding piece, negative pressure take place the piece connect in negative pressure pipe keeps away from the one end of probe protection casing, and can make negative pressure produces in the negative pressure pipe.
2. An electric field instrument capable of balancing strong wind interference as claimed in claim 1, wherein said probe protection cover comprises an inner cover and an outer cover, said outer cover is disposed outside said inner cover and forms an airflow guiding cavity with said inner cover, said inner cover has an airflow inlet at its lower end, said airflow inlet is located between said sensing piece and said grounding shielding piece, said negative pressure tube is connected to said airflow guiding cavity.
3. An electric field instrument capable of balancing strong wind interference according to claim 2, wherein the negative pressure pipe is vertically upward, and the negative pressure generating member is tubular and vertically disposed above the negative pressure pipe.
4. The electric field instrument capable of balancing strong wind interference according to claim 3, wherein the negative pressure generating member comprises an air flow inlet section, a negative pressure generating section and an air flow outlet section which are sequentially arranged, the air flow inlet section is horn-shaped and is reduced in diameter towards one side close to the negative pressure generating section, the air flow outlet section is horn-shaped and is expanded in diameter towards one side far away from the negative pressure generating section, and the negative pressure pipe is communicated with the negative pressure generating section.
5. An E-field instrument according to claim 3, wherein said negative pressure generating member is a venturi vacuum generator, and said negative pressure tube is connected to a vacuum inlet of said venturi vacuum generator.
6. An electric field instrument according to claim 4 or 5, wherein the negative pressure generating member is capable of rotating horizontally relative to the negative pressure pipe; the negative pressure generating piece is also provided with a guide plate, and the guide plate can drive the negative pressure generating piece to rotate under the action of wind power, so that the airflow inlet of the negative pressure generating piece is opposite to the wind direction.
7. An E-field apparatus according to claim 6 wherein the guide plate is disposed at one end of the airflow outlet of the negative pressure generating member.
8. A lightning early warning device, characterized by comprising an electric field instrument capable of balancing strong wind interference as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020940341.8U CN212433281U (en) | 2020-05-28 | 2020-05-28 | Electric field instrument capable of balancing strong wind interference and lightning early warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020940341.8U CN212433281U (en) | 2020-05-28 | 2020-05-28 | Electric field instrument capable of balancing strong wind interference and lightning early warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212433281U true CN212433281U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020940341.8U Active CN212433281U (en) | 2020-05-28 | 2020-05-28 | Electric field instrument capable of balancing strong wind interference and lightning early warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212433281U (en) |
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2020
- 2020-05-28 CN CN202020940341.8U patent/CN212433281U/en active Active
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