CN87200771U - Extra-high voltage near-elecricity alarm - Google Patents
Extra-high voltage near-elecricity alarm Download PDFInfo
- Publication number
- CN87200771U CN87200771U CN 87200771 CN87200771U CN87200771U CN 87200771 U CN87200771 U CN 87200771U CN 87200771 CN87200771 CN 87200771 CN 87200771 U CN87200771 U CN 87200771U CN 87200771 U CN87200771 U CN 87200771U
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- receiving element
- utility
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- voltage
- alarm
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Abstract
The utility model discloses an extra-high voltage (110KV-500KV ) near-electricity alarm used for preventing the electric shock casualty of the electric working people. The utility model is mainly composed of a receiving element, an amplifier, a controller, an oscillator and a buzzer. In the hazardous area, a strong electromagnetic field changing around a high-voltage transmission line generates a swirl on the receiving element made of thin soft iron pieces. Through the amplification, the swirl controls the working of the oscillator and impels the buzzer to produce sound signal for alarm. When the shape and dimension of the receiving element are changed and the threshold voltage of the controller is adjusted, the utility model can be applicable to different safety distances of different high-voltage ranges. The utility model has the advantages of simple device, high reliability, small size, light weight and multiple usages.
Description
The utility model belongs to the electronic device field, is used to protect the warning device of a kind of small portable of electrician's personal safety.
In electrician's electric shock casualty accident, the overwhelming majority is owing to serious breach of security working regulation, and mistakenly entering charged chamber or mistake go up charged bar, tower is caused.Therefore, develop a kind of alarming in short range of electric power device, power supply gas staff carries, and to prevent personal electric shock casualty accident, is electrician's an urgent demand.
Existing a kind of alarming in short range of electric power device (referring to: the warning device that the prevention person gets an electric shock---introduce a kind of alarming in short range of electric power device, " power technology ", 1985.10).This alarming in short range of electric power device comprises that antenna, ground wire, detection loop, voltage detecting circuit, control loop, hummer start loop, hummer and power supply etc. and partly form.
The principle of work of this alarm is: whether produce induced voltage owing to the electric field of electrification in high voltage part works to the body of alarm and receiving antenna, utilize transistor to detect its electrostatic induction voltage, differentiating in control loop is alternating voltage.Because this alarm is only under the alternating voltage effect, and after reaching certain numerical value, hummer starts the loop and could move, thereby starts hummer, sends alarm sound.
This alarm, because the line construction complexity influence stability and reliability, and it only is applicable to 3---10KV low voltage occasion.
The purpose of this utility model provides a kind of adjustable reliable and stable microminiature alarming in short range of electric power device of voltage range (especially in UHV (ultra-high voltage) 110KV～500KV scope) that is applicable to.
Fig. 1. the block scheme of alarm
Fig. 2. the receiving element synoptic diagram
Fig. 3. the embodiment electrical schematic diagram
Exist the electromagnetic field that the very strong cycle changes around the high voltage electricity transmission conductive wire, and space radiation energy towards periphery.The periodically variable electromagnetic field field intensity of its surrounding space increases along with increasing of transmission voltage, along with the distance of distance power transmission line strengthens and reduces.When receiving element 1 is under the strong-electromagnetic field effect, induction thereon forms eddy current, through its enlargement factor of combined type amplifier 2(of high-amplification-factor be β total=β
1β
2β
3) amplification, via controller 3 control is by transistor and inductance L again, the oscillator 4 that capacitor C is formed produces an audio voltage output, promotes hummer 5 and sends sound equipment, reaches the purpose of warning.Remove the zone as long as this device is in danger, hummer is just worked always.
Because the receiving element 1 of this device is non-sensitive element, it not only can obtain stable reception, and conventional L, the receiving system of C oscillatory circuit have been avoided using, so line construction is simple, stability and reliability have been strengthened, and it is little, in light weight to have a volume, is convenient to make the characteristics of subminiature portable multi-purpose type alarm.
Receiving element 1 synoptic diagram when Fig. 2 ties up to 110KV～500KV scope.
Material 08F, diameter 30mm, thick 0.2～0.3mm
Change the shape of receiving element 1, applicable different high pressure range of size and different alarm distances.
One end of lead 7 is welded in the center of circle of receiving element 1, and the other end links to each other with the input end of amplifier 2.
Shown in Figure 3 is the utility model embodiment electrical schematic diagram (each several part among its figure in frame of broken lines difference corresponding diagram 1 square frame) in the UHV (ultra-high voltage) scope
Its suitable voltage range: exchange 50Hz, 110KV～500KV
Working power voltage: direct current 3V
Electric current during work: 30～40mA
Buzzing is imitated frequently: 1500～2000Hz
Wherein regulate variable resistor 8 and promptly determine the threshold value of control, the safe distance when also promptly determining different high pressure.
Claims (3)
1, alarming in short range of electric power device, comprise hummer, power supply, it is characterized in that being in eddy current that the receiving element [1] in the strong-electromagnetic field zone go up to produce and amplify through the combined type amplifier [2] of high-amplification-factor and start the controller [3] that on-off action is arranged and make oscillator [4] produce audio oscillation, promote hummer [5] sounding.
2, alarming in short range of electric power device as claimed in claim 1 is characterized in that the threshold voltage of controller (3) is regulated by variable resistor (8) in order to adapt to the different safe distances of different high pressure ranges.
3,, it is characterized in that receiving element (1) made by thin type soft iron sheet as claim 1,2 described alarming in short range of electric power devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87200771 CN87200771U (en) | 1987-02-02 | 1987-02-02 | Extra-high voltage near-elecricity alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87200771 CN87200771U (en) | 1987-02-02 | 1987-02-02 | Extra-high voltage near-elecricity alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87200771U true CN87200771U (en) | 1988-01-20 |
Family
ID=4817149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87200771 Ceased CN87200771U (en) | 1987-02-02 | 1987-02-02 | Extra-high voltage near-elecricity alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87200771U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339519A (en) * | 2010-07-24 | 2012-02-01 | 郑龙杰 | Electric safety distance voice prompting system |
| CN102439643A (en) * | 2009-04-30 | 2012-05-02 | 层近系统有限责任公司 | Proximity warning system with silent zones |
| CN112991657A (en) * | 2021-02-08 | 2021-06-18 | 四川省铭阳睿智科技有限公司 | Forest fire intelligent early warning control system based on 5G communication technology |
-
1987
- 1987-02-02 CN CN 87200771 patent/CN87200771U/en not_active Ceased
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8446277B2 (en) | 2007-10-25 | 2013-05-21 | Strata Proximity Systems, Llc | Proximity warning system with silent zones |
| US8810390B2 (en) | 2007-10-25 | 2014-08-19 | Strata Proximity Systems, Llc | Proximity warning system with silent zones |
| CN102439643A (en) * | 2009-04-30 | 2012-05-02 | 层近系统有限责任公司 | Proximity warning system with silent zones |
| CN102339519A (en) * | 2010-07-24 | 2012-02-01 | 郑龙杰 | Electric safety distance voice prompting system |
| CN112991657A (en) * | 2021-02-08 | 2021-06-18 | 四川省铭阳睿智科技有限公司 | Forest fire intelligent early warning control system based on 5G communication technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |