CN102499227B - CT (current transducer) energy acquisition-based ultrasonic bird repelling device for series compensation platform - Google Patents
CT (current transducer) energy acquisition-based ultrasonic bird repelling device for series compensation platform Download PDFInfo
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- CN102499227B CN102499227B CN201110300873.0A CN201110300873A CN102499227B CN 102499227 B CN102499227 B CN 102499227B CN 201110300873 A CN201110300873 A CN 201110300873A CN 102499227 B CN102499227 B CN 102499227B
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Abstract
The invention provides a CT (current transducer) energy acquisition-based ultrasonic bird repelling device for a series compensation platform, and can effectively prevent and control the problem of bird trouble of a series capacitor compensation device. In the ultrasonic bird repelling device, a circuit energy acquisition CT is adopted to supply power, large current passing through a circuit is converted into a required current, the current passes through an isolated CT realize electrical isolation, the high frequency part of power frequency current is filtered by virtue of a low-pass filter, direct current voltage is rectified and output by virtue of a rectifier, a high-frequency signal generator generates a high-frequency voltage signal between 16 and 25kHz immediately, and the high-frequency voltage signal is loaded to a piezoelectric ceramic plate of an ultrasonic speaker and is amplified to generate a high-volume ultrasonic wave which is between 16 and 25kHz and has a sound pressure level not lower than 90dB by virtue of the speaker. According to the bird repelling device, the energy acquisition CT is used as a power supply to guarantee stable high-power output, so that all-weather 24-hour uninterrupted large-area bird repelling is guaranteed; and a mode that two ultrasonic speakers are connected in parallel is adopted, and ultrasonic wave with variable frequencies is alternately and continuously generated, so that birds cannot adapt to the ultrasonic wave, and the durability of bird repelling effect is guaranteed.
Description
Technical field
The invention belongs to electric equipment protection device field, specifically relate to a kind of series compensation platform ultrasonic birds driving device of getting energy based on CT.
Background technology
In the design process of high pressure, super-pressure and even extra-high voltage electric power equipment, should take into full account the adverse effect that birds are nested, peck at etc. the safety and reliability of power system and power equipment operation, and take effectively to drive bird measure and weakened or eliminate.Guaranteeing, under the prerequisite of effect on driving birds, also should to prevent the injury that improper measures may cause wild birds.Current, the scarer that obtains application in power transmission and transforming equipment and technology mainly contain pneumatic reflective mirror bird-scaring unit, voice bird-scaring unit, high-voltage electronic pulse electric shock and drive bird, capacitor discharge and produce empty quick-fried, high light and drive bird and drive bird and sting etc.
Pneumatic reflective mirror bird-scaring unit is bird-scaring unit the earliest, and its principle is under wind action, and the wind bowl reflective mirror on bird-scaring unit rotates and reaches the object of threatening birds.The feature of such scarer is cheap.
At present, on transmission line of electricity, be most widely used and scarer relatively simple for structure is pneumatic reflective mirror scarer.This scarer is generally placed in transmission pole top of tower, and reflex reflector lens and connecting rod thereof rotate with the wind, utilizes rotation, reflection ray irradiation and birds self mirror image of connecting rod to deter birds.But this scarer has following three shortcomings, the one, under calm or cloudy environment, effect is poor, and the 2nd, birds can adapt to after a period of time, and the 3rd, after being affected by wind and weather and sand and dust etc. out of doors, can damage in device.The scarer of other type has generally been applied the schemes such as the cry, ultrasonic, high-voltage pulse electric shock of acupuncture, machinery swing, radium-shine laser, birds wail sound and natural enemy, but is all also to only limit to transmission line of electricity.For power equipment, series capacitor compensation equipment particularly, scarer yet there are no practical application.
Voice bird-scaring unit is the bird-scaring unit that utilizes the fabrication techniques such as speech chip or MP3, the birds wail sound of played pre-recorded and/or the cry of birds natural enemy are frightened birds, feature is to have fulminant effect on driving birds, but because the kind of bird is a lot, and kind in the sound bank of domestic birds is limited, so birds can adapt within a short period of time.The power of voice bird-scaring unit is large, and service life is short, is applied in power transmission and transformation unit and also can causes noise pollution.
High-voltage pulse electric shock bird-scaring unit, to utilize electrion electric shock birds, for example application number is CN201020545346.7, denomination of invention is the utility model patent of " a kind of electric shock bird that utilizes line influence power supply ", the line influence power taking of scarer power supply, the AC power of taking out, after rectifying and wave-filtering voltage stabilizing, is given after a large capacity energy-storage travelling wave tube charging power supply as booster circuit.Booster circuit can change to high pressure more than 6000V by the low-voltage direct of 3-5V, after bird is fallen on the charged electrode being arranged on cross arm of tower, is electrically shocked immediately, shies.The method can work the mischief to birds, simultaneously the security presence hidden danger to maintainer.This device has certain effect on driving birds, but its bird scope of driving is extremely limited, only have bird to drop on competence exertion effect on its pole plate, and service life is short, and may damages birds.While being used for the steel tower of power transmission and transformation unit, to upper and lower steel tower maintenance, also can make troubles and some potential safety hazards.
Capacitor discharge produces empty quick-fried and high light, and to drive bird be to utilize capacitor discharge to produce empty detonans and high light, thereby drive birds, there is certain effect on driving birds, for example application number is CN200620095701.9, denomination of invention is the utility model patent of " a kind of sound, light, machine scarer ", adopt high voltage pulse to ignite storage capacitor electric discharge, produce explosive sound and forceful electric power flash of light, air blast promotes to drive bird hand and does mechanical action simultaneously, reach sound, light, mechanical triple bird effects of driving, this device sphere of action reaches 200 meters, can realize remote operation.But its bird scope of driving is extremely limited, and high light is also subject to its angle limits.Because capacitor discharge immediate current is very large, so service life is shorter.
Supersonic wave bird driving device, by sending ultrasonic, worsens the living environment of bird, makes it away from steel tower, and effect is lasting; Low in energy consumption, than the dependable performance of sound bird-scaring unit, supersonic wave bird driving device is quieter than sound bird-scaring unit, and its maintenance is less than sound bird-scaring unit.Research about ultrasonic birds driving device starts, application number as far back as application in 2003 is CN200320112896.X, denomination of invention is the utility model patent of " supersonic wave bird driving device ", major function is to utilize singlechip technology, send immediately the ultrasonic of a certain frequency, birds be upset and leave present place, comprising power unit, timing reset circuit, main control unit part, driving and phonation unit part.This device circuit is complicated, causes manufacturing cost to improve.
Application number is CN200820202817.7, denomination of invention is the utility model patent of " electric bird-scaring device ", device adopts single-chip microcomputer to send the nervous system of ultrasonic stimulation birds, destroy the living environment of birds, and owing to adopting the ultrasonic frequency of constantly variation and different working mechanisms, birds cannot be adapted to.But the lasting power supply of needs of device, consumes energy larger.
Application number is CN201020680925.2, denomination of invention is the utility model patent of " ultrasonic bird expelling device of high-voltage power transmission line ", relate to a kind of ultrasonic bird expelling device of high-voltage power transmission line, device utilizes photovoltaic cell module and accumulator as power supply, cooperation has ultrasonic and the light emitting diode acting in conjunction of spread effect to birds, simultaneously by the regular or hyperacoustic wavelength of irregular adjustment of control device, can prevent the harm that birds are caused transmission line of electricity.The power supply device of this device has photovoltaic cell module and accumulator two parts, when continuous rainy weather, can only provide energy by accumulator, and the electric energy of accumulator is limited, need manual detection accumulator dump energy, with the situation of avoiding accumulator not have electricity and overcast and rainy scarer normally to work.
In sum, the scarer know-why that has obtained at present application differs, result of use is also not quite similar, and is applicable to equipment such as Transmission Towers more, and the research of driving bird technology and device that series compensation platform is used has no all documents of publishing with application.
The benefit device of going here and there is generally all arranged on transformer station or the string in field and mends in station, and its surrounding enviroment are away from city, meagrely-populated, is the good place of avian reproduction, activity.In recent years, the dynamics of China environmental protection is strengthened day by day, and the wildlifes such as birds are also increasing, and the bird pest problem of thereupon bringing can not be ignored.String is mended the MOV (metal oxide pressure-limiting device), spark gap of device etc. how outdoor primary equipment is and is arranged on the series compensation platform consisting of support insulator and oblique pull insulator.Oblique pull composite insulator and composite bushing MOV realize insulation function by composite insulation outer coat, and the composite of these quality of rubber materials easily damages because of pecking at of birds, because birds are nested, the ight soil of birds also may cause electric flashover.Birds enter spark gap, are easy to cause the maloperation of spark gap.Series compensation platform is also the region that invaded and harassed by birds, because platform area is larger, between capacitor pack support top, capacitor pack support and capacitor pack support below, the steel construction plane of platform and various utilizable plane or wire top all may suffer the filthy impacts such as the nesting of birds, activity and ight soil.In a word, bird pest may become impact string and mend one of hidden danger of device and even power system security reliability service, and this region at some birds frequent activity seems particularly outstanding, and the safe and reliable operation that whole string is mended device and even power system brings hidden danger.
Summary of the invention
The object of the invention is to provide a kind of series compensation platform ultrasonic birds driving device of getting energy based on CT, adopt ultrasonic mode to drive bird, meet serial connection capacitor compensating device platform to the strict demand prerequisite of field intensity and flashover under, can realize and drive bird on a large scale, guarantee the protection to MOV (metal oxide pressure-limiting device), take into account again other equipment on series compensation platform, device is got energy unit dependable performance, can realize round-the-clock 24 hours continual large area and drive bird, and scarer can not work the mischief to birds, mend device maintenance personal can to string yet and bring potential safety hazard.
The basic principle of supersonic wave bird driving device is that the ultrasonic sending outside human auditory's scope is driven birds.
For achieving the above object, the technical scheme that the present invention takes is:
Based on CT get can a series compensation platform ultrasonic birds driving device, its improvements are that described scarer comprises that circuit gets energy CT and bird-scaring unit; It can CT be bus-type structure that described circuit is got, and comprises Secondary Winding and shell, and described Secondary Winding is placed in enclosure; Described bird-scaring unit comprises isolation CT, low pass filter, rectifier, high voltage silicon rectifier stack, HF signal generator and ultrasonic speaker, and described bird-scaring unit adopts metal-back encapsulation.
Wherein: described scarer adopts circuit to get and can power by CT, the electric current described isolation CT that flows through realizes electrical isolation, by the HFS of low pass filter filtering power current, by rectifier rectification output dc voltage, HF signal generator generates high-frequency voltage signal immediately, and high-frequency voltage signal is loaded on the piezoelectric ceramic piece of ultrasonic speaker, and piezoelectric ceramic piece produces mechanical oscillation, by ultrasonic speaker, amplify, send ultrasonic.
Wherein: it can CT be straight-through current transformer that described circuit is got, and comprises two Secondary Winding, in the coil of Secondary Winding, is equipped with iron core; Together with described Secondary Winding employing epoxy resin is cast in shell.
Wherein: described bird-scaring unit adopts after metal-back encapsulation, leave circuit and get the energy incoming line of CT and the line outlet of ultrasonic speaker.
Wherein: the described high voltage silicon rectifier stack of access in parallel between described rectifier and HF signal generator.
Wherein: winding and the Secondary Winding of screen layer are set in the middle of described isolation CT comprises, winding coil seals with being stained with pine.
Wherein: described low pass filter adopts twin-stage co-mode coil.
Wherein: described high voltage silicon rectifier stack is composed in series by kenotron.
Wherein: described bird-scaring unit and circuit are got and can be arranged on same support by CT, or are arranged on different supports.
Wherein: while using described scarer on serial connection capacitor compensating device, scarer is positioned over to metal oxide pressure-limiting device group periphery, or is positioned over spark gap or capacitor group periphery.
Owing to having adopted technique scheme, compared with prior art, beneficial effect of the present invention comprises:
1) get and can equipment performance stablize
The energy CT equipment of getting conventional on series compensation platform for the power acquisition of bird-scaring unit, get energy CT simple in structure and non-maintaining not fragile, be not subject to sunlight and climatic effect, power output is large and energy supply stable, has guaranteed round-the-clock 24 hours continual large area effect on driving birds of bird-scaring unit;
2) effectiveness of bird-scaring unit is good
The whole metal-back that adopts of bird-scaring unit encapsulates, surface is only left and is got the energy incoming line of CT and the outlet of ultrasonic speaker, the high-frequency signal that has farthest guaranteed bird-scaring unit inside can not cause interference to measuring the secondary devices such as case on platform, meets the requirement of flat equipments on stage to electromagnetic shielding;
3) supersonic wave bird driving mode is more applicable for string and mends device
String will make a noise while mending device operation itself, and the effect of the cry of birds horrible cry and natural enemy in the noisy environment of device own can be had a greatly reduced quality, and near the staff also may disturbing; Bird-scaring unit adopts ultrasonic mode to drive bird, than the dependable performance of sound bird-scaring unit; It is complicated that string is mended on apparatus platform equipment, is subject to the position that bird pest threatens numerous, and supersonic wave bird driving mode has solved mechanical pendulous device and radium-shine laser can only drive bird among a small circle, and what can not meet that string mends device drives bird requirement; Supersonic wave bird driving mode has been avoided the electric discharge of high-voltage electric shock device to mend device itself to string and has been brought infringement in addition, has met string and has mended the strict demand of apparatus platform to field intensity and flashover;
4) bird-scaring unit circuit design is reasonable, long service life
Inner at bird-scaring unit, access high voltage silicon rectifier stack in parallel between rectifier and HF signal generator, when voltage is excessive, breakdown diode is realized bypass, prevents from damaging because line current disturbance causes the IC circuit of HF signal generator;
5) drive bird scope large
Due to the principle that ultrasonic is to all the winds propagated in medium, the position that two ultrasonic speakers of bird-scaring unit are mended on apparatus platform at string had both guaranteed that concentrated energy came emphasis to launch ultrasonic to MOV, can take into account again other equipment on platform;
6) be difficult for being adapted to by birds
Bird-scaring unit adopts the mode of two ultrasonic speaker parallel connections, by the control signal of HF signal generator, alternately sends continuously the ultrasonic of frequency change, has guaranteed that ultrasonic is not adapted to by birds, has guaranteed the persistence of effect on driving birds;
7) versatility is good
It is the bird-scaring unit for serial connection capacitor compensating device that string is mended the supersonic wave bird driving apparatus of using based on getting energy CT, also can be at fault current limiter etc. other have circuit and get and can on the power equipment of condition, use, only need to change the parameter of getting energy CT and the position of adjusting bird-scaring unit, there is good versatility;
8) scarer volume is little, power is large, cheap
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 string is mended the supersonic wave bird driving device of using based on getting energy CT;
The position view of Fig. 2 scarer on series compensation platform;
The position side schematic view of Fig. 3 scarer on series compensation platform;
Fig. 4 scarer the support reformation schematic diagram;
Fig. 5 scarer the support reformation side schematic view;
Wherein: CT-current transformer; GAP-spark gap; MOV-metal oxide pressure-limiting device; LPE-low pass filter; IC-HF signal generator.
Embodiment
Below in conjunction with example, the present invention will be described in detail.
The supersonic wave bird driving device that the present invention proposes utilizes circuit CT to get can provide scarecrow device needed energy.First by isolation CT, realize electrical isolation, then by low pass filter filtering high-frequency harmonic, by rectifier, producing DC voltage again powers to HF signal generator, HF signal generator produces the high-frequency voltage signal of 16kHz～25kHz immediately, high-frequency voltage signal is loaded on the piezoelectric ceramics of ultrasonic speaker and produces mechanical oscillation, by loudspeaker, amplify and produce the large volume ultrasonic that 16kHz～25kHz, sound pressure level are not less than 90dB, realize the effect of expulsion birds.The present invention is the ultrasonic birds driving device of applying on connection power capacitor reactive compensation installation first.
The supersonic wave bird driving device of this patent invention can be launched high-power ultrasonics, cover the solid space at whole platform and whole device place, greatly reduce string and mend the probability that device is subject to birds infringement, can not cause the noise pollution to environment, also can not damage birds.Because series compensation platform and ground are high-insulations, thus the power supply of flat equipments on stage conventionally take circuit get can and optical fiber send the mode of energy.Supersonic wave bird driving device adopts circuit to get and can power by CT, electromagnetic induction principle by the large electric current flowing through in circuit by coil obtains needed electric current, electric current flow through isolation CT realize electrical isolation, then by the HFS of low pass filter filtering power current, by rectifier rectification, export the required DC voltage of HF signal generator, then HF signal generator generates the high-frequency voltage signal of 16kHz～25kHz immediately, and high-frequency voltage signal is loaded on the piezoelectric ceramic piece of ultrasonic speaker.Due to piezo-electric effect, piezoelectric ceramic piece produces mechanical oscillation, by loudspeaker, amplifies the large volume ultrasonic that generation 16kHz～25kHz, sound pressure level are not less than 90dB.Bird-scaring unit adopts the mode of two ultrasonic speaker parallel connections, by the control signal of HF signal generator, alternately sends continuously the ultrasonic of frequency change, guarantees that ultrasonic is not adapted to by birds, has guaranteed the persistence of effect on driving birds.
The metal shell of bird-scaring unit is realized integrally closed, has good electromagnetic shielding, and surface is only left and got the energy incoming line of CT and the outlet sound mouth of ultrasonic speaker.Two ultrasonic speaker symmetric arrays arranged side by side, are in a side of MOV group separately, and are in the centre position transmitting ultrasonic of MOV height, and the arrangement of bird-scaring unit approaches platform edges as much as possible, and particular location is referring to Fig. 2.Because MOV is subject to bird pest in string benefit device to threaten maximum equipment, such position arrangement can concentrate transmitting ultrasonic protect to MOV, also can take into account miscellaneous equipment on platform simultaneously.
Circuit is got energy CT:
Circuit get can CT be the straight-through current transformer that is installed in low-voltage bus bar line side, its operating frequency 50Hz, adopts casting insulatedly, and secondary coil is taked to good electromagnetic shielding measure.Circuit is got and can CT be had advantages of that dry type, volume are little, lightweight, non-maintaining, and is suitable for outdoor installation, and design all meets relevant criterion aspect applicable.It can CT overall structure be bus-type that circuit is got, and mainly shell and Secondary Winding, consists of.Secondary Winding is placed in screening can, and together with being cast in shielding case with epoxy resin, the enclosing cover of shielding case is fastening with hexagon socket head cap screw and shielding case, in the bottom of shell, leaves secondary terminal box.A winding (bus) passes from the middle Kong of transformer center.It is zero that circuit is got current potential between energy CT shell and series compensation platform, and has two independently Secondary Winding, and each secondary coil respectively has iron core.The screening can material that circuit is got energy CT is cast aluminium, and its surface transition is round and smooth, roughness is consistent.After screening can assembling, require good seal performance.Secondary outlet terminal (comprising bolt, nut, pad etc.) is made with copper or copper alloy, and has reliable antirust coat.The humidity resistance of secondary outlet terminal plate should be good.Circuit is got and can be required by seal tightness test, power frequency withstand test, the test of turn-to-turn overvoltage, error type approval test and error routine inspection by CT.
Isolation CT:
Isolation CT (containing iron core) realizes the electrical isolation of getting energy CT and bird-scaring unit mainframe box, and its operating frequency is 50Hz, and saturation current is 2 times of rated current.Between a winding of isolation CT, Secondary Winding, add screen layer, and go out to go between to ground wire terminal, it is withstand voltage that insulating requirements realizes 3000V, and winding coil requires with being stained with pine sealing.
Low pass filter:
Low pass filter adopts high-performance AC power line filter DGC-10AJ, and its operating frequency is 50Hz.Wave filter adopts twin-stage co-mode coil, has very large (CM/DM) insertion loss, has good common and different mode interference suppressioning characteristic, can effectively suppress various high frequency transient and disturb, and meets FCC B level and the requirement of GJB 9254B level.
Rectifier:
Rectifier is that model is the bridge rectifier of KBPC25-10, and maximum operating currenbt is 25A, and inverse peak voltage is 1000V.
High voltage silicon rectifier stack:
The model of high voltage silicon rectifier stack is 2DLW10A/10V, carries radiator, by many kenotrons (silicon grain), is composed in series, and plays the effect of direct current pressure limiting, for the protection of the IC circuit of HF signal generator.
HF signal generator:
HF signal generator is high-frequency signal generation integrated circuit and the signal amplification circuit based on DSP TMS320F28335, the DC-voltage supply of being exported by rectifier, and high-frequency signal is voltage signal immediately within the scope of 16kHz～25kHz.
Ultrasonic speaker:
The model of ultrasonic speaker is KS-5120, and operating frequency 20 ± 5kHz meets the scope of driving bird frequency of 16kHz～25kHz.The typical position of ultrasonic speaker is organized near the intersection point on longitudinal axis (vertical with the long limit of series compensation platform) and the long limit of series compensation platform at MOV, also can be arranged near spark gap, capacitor group.
The support system of bird-scaring unit adopts the material identical with CT support, also can, by transformation CT support, make bird-scaring unit and CT use side by side CT stent support.
According to specific exemplary embodiment, invention has been described herein.It will be apparent under not departing from the scope of the present invention, carrying out to one skilled in the art suitable replacement or revise.Exemplary embodiment is only illustrative, rather than the restriction to scope of the present invention, and scope of the present invention is defined by appended claim.
Claims (9)
- Based on CT get can a series compensation platform ultrasonic birds driving device, it is characterized in that described scarer comprises that circuit gets energy CT and bird-scaring unit; It can CT be bus-type structure that described circuit is got, and comprises Secondary Winding and shell, and described Secondary Winding is placed in enclosure; Described bird-scaring unit comprises isolation CT, low pass filter, rectifier, high voltage silicon rectifier stack, HF signal generator and ultrasonic speaker, and described bird-scaring unit adopts metal-back encapsulation;It can CT be straight-through current transformer that described circuit is got, and comprises two Secondary Winding, in the coil of Secondary Winding, is equipped with iron core; Together with described Secondary Winding employing epoxy resin is cast in shell.
- As claimed in claim 1 a kind of based on CT get can series compensation platform ultrasonic birds driving device, it is characterized in that described scarer adopts circuit to get and can power by CT, the electric current described isolation CT that flows through realizes electrical isolation, by the HFS of low pass filter filtering power current, by rectifier rectification output dc voltage, HF signal generator generates high-frequency voltage signal immediately, high-frequency voltage signal is loaded on the piezoelectric ceramic piece of ultrasonic speaker, piezoelectric ceramic piece produces mechanical oscillation, by ultrasonic speaker, amplify, send ultrasonic.
- 3. a kind of series compensation platform ultrasonic birds driving device of getting energy based on CT as claimed in claim 1, is characterized in that described bird-scaring unit adopts after metal-back encapsulation, leaves circuit and gets the energy incoming line of CT and the line outlet of ultrasonic speaker.
- 4. a kind of series compensation platform ultrasonic birds driving device of getting energy based on CT as claimed in claim 1, is characterized in that the described high voltage silicon rectifier stack of access in parallel between described rectifier and HF signal generator.
- As claimed in claim 1 a kind of based on CT get can series compensation platform ultrasonic birds driving device, it is characterized in that described isolation CT arranges winding and the Secondary Winding of screen layer in the middle of comprising, winding coil is with being stained with loose sealing.
- 6. a kind of series compensation platform ultrasonic birds driving device of getting energy based on CT as claimed in claim 1, is characterized in that described low pass filter adopts twin-stage co-mode coil.
- 7. a kind of series compensation platform ultrasonic birds driving device of getting energy based on CT as claimed in claim 1, is characterized in that described high voltage silicon rectifier stack is composed in series by kenotron.
- As claimed in claim 1 a kind of based on CT get can series compensation platform ultrasonic birds driving device, it is characterized in that described bird-scaring unit and circuit get energy CT and can be arranged on same support, or be arranged on different supports.
- As claimed in claim 1 a kind of based on CT get can series compensation platform ultrasonic birds driving device, while it is characterized in that using described scarer on serial connection capacitor compensating device, scarer is positioned over to metal oxide pressure-limiting device group periphery, or is positioned over spark gap or capacitor group periphery.
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| CN201110300873.0A CN102499227B (en) | 2011-09-29 | 2011-09-29 | CT (current transducer) energy acquisition-based ultrasonic bird repelling device for series compensation platform |
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| CN201110300873.0A CN102499227B (en) | 2011-09-29 | 2011-09-29 | CT (current transducer) energy acquisition-based ultrasonic bird repelling device for series compensation platform |
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| CN102499227B true CN102499227B (en) | 2014-05-07 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US8934319B2 (en) | 2012-10-18 | 2015-01-13 | Bird-B-Gone, Inc. | Portable noisemaker |
| CN104396935A (en) * | 2014-11-24 | 2015-03-11 | 广西高农机械有限公司 | Ultrasonic bird dispeller |
| CN107800198B (en) * | 2017-11-21 | 2021-03-26 | 中国电力科学研究院有限公司 | Power supply for supplying power to series compensation device and control method thereof |
| CN108512172A (en) * | 2018-05-28 | 2018-09-07 | 鼎力联合（深圳）高新技术有限公司 | Scarer and bird repellent method |
| CN109077051A (en) * | 2018-10-01 | 2018-12-25 | 国网山东省电力公司枣庄供电公司 | A kind of induction charging type bird-scaring unit device |
| CN111513054B (en) * | 2020-04-09 | 2022-08-02 | 国家电网有限公司 | Bird repelling method and bird repelling device based on ultrasonic waves |
| CN111901702B (en) * | 2020-09-03 | 2022-05-06 | 北京华航测通科技有限公司 | Signal receiving and transmitting device for 5G base station construction |
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| CN201805849U (en) * | 2010-08-04 | 2011-04-27 | 南京世都科技有限公司 | Intelligent environmental-friendly bird-repelling device based on solar power supply |
| CN201854623U (en) * | 2010-09-07 | 2011-06-08 | 泉州市丰泽华盛电子通讯器材有限公司 | Photoelectric target identification bird repeller |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201805849U (en) * | 2010-08-04 | 2011-04-27 | 南京世都科技有限公司 | Intelligent environmental-friendly bird-repelling device based on solar power supply |
| CN201854623U (en) * | 2010-09-07 | 2011-06-08 | 泉州市丰泽华盛电子通讯器材有限公司 | Photoelectric target identification bird repeller |
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