CN106885951A - Sensing electro-detection safety alarm device during electrical equipment grounding failure - Google Patents
Sensing electro-detection safety alarm device during electrical equipment grounding failure Download PDFInfo
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- CN106885951A CN106885951A CN201710200295.0A CN201710200295A CN106885951A CN 106885951 A CN106885951 A CN 106885951A CN 201710200295 A CN201710200295 A CN 201710200295A CN 106885951 A CN106885951 A CN 106885951A
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- induced electricity
- main frame
- circuit
- acoustic
- discriminating gear
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/24—Arrangements for measuring quantities of charge
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
A kind of sensing electro-detection safety alarm device during electrical equipment grounding failure, including main frame, wrist strap, control circuit, non-contact inductive electrical measurement, induced electricity power discriminating gear and acoustic-optic alarm, wrist strap, control circuit, non-contact inductive electrical measurement, induced electricity power discriminating gear and acoustic-optic alarm are on main frame, total power switch is housed on main frame, non-contact inductive electrical measurement is electrically connected with induced electricity power discriminating gear, induced electricity power discriminating gear is electrically connected with acoustic-optic alarm, non-contact inductive electrical measurement, induced electricity power discriminating gear and acoustic-optic alarm are electrically connected with control circuit.Warning device of the present invention is worn in wrist and is carried with by maintainer, when the electrical equipment of earth wire disconnection or imperfect earth is overhauled, it is capable of detecting when that the induced electricity of electrical appliance enclosure is strong and weak, to remind maintainer, so as to the event for avoiding personal injury.
Description
Technical field
The present invention relates to warning device during electrical equipment grounding failure, when being especially a kind of electrical equipment grounding failure
Sensing electro-detection safety alarm device.
Background technology
Electrical equipment can all carry out reliable ground under normal operating conditions, but when ageing equipment or maloperation, generally
The phenomenons such as ground wire disconnection or imperfect earth occur.When ground wire disconnects or imperfect earth phenomenon occurs, outside electrical equipment
Shell then can rapidly induce substantial amounts of charge inducing (electrostatic), and this work of patrolling and examining to maintainer brings very big danger, changes sentence
Talk about, when maintainer touches band faradic electrical equipment by force, a large amount of charge inducings will be entered by people's direction of flow greatly
And there is personal injury event.
In recent years, has there is the strong induced electricity (electrostatic) of many cause electrical appliance enclosures and has caused personal injury in power industry
Accident, such accident is difficult to prevent, there is presently no reliable Forewarning Measures.Therefore, electrical equipment operation operation scene is compeled
It is essential and wants a kind of safety alarm device for being prevented from induced electricity casualty accident.
The content of the invention
A kind of sensing electro-detection when the technical problem to be solved in the present invention is to provide electrical equipment grounding failure is reported safely
Alarm device, it is capable of detecting when electrically when the electrical equipment of the disconnection of maintainer's earth wire or imperfect earth is overhauled
The induced electricity of device housings is strong and weak, to remind maintainer, so as to avoid personal injury event.
Technical solution of the invention is to provide sensing during a kind of electrical equipment grounding failure with following structure
Electro-detection safety alarm device, including main frame, wrist strap, control circuit, non-contact inductive electrical measurement, induced electricity power are sentenced
Other device and acoustic-optic alarm, the strong and weak differentiation dress of wrist strap, control circuit, non-contact inductive electrical measurement, induced electricity
Put with acoustic-optic alarm on main frame, total power switch, non-contact inductive electrical measurement and sense are housed on main frame
Electricity power discriminating gear electrical connection is answered, induced electricity power discriminating gear is electrically connected with acoustic-optic alarm, and non-contact inductive is electric
Measurement apparatus, induced electricity power discriminating gear and acoustic-optic alarm are electrically connected with control circuit.
Sensing electro-detection safety alarm device during electrical equipment grounding failure of the present invention, wherein, it is described non-to connect
Touch sensing electrical measurement includes induced electricity test probe, data processing circuit and display screen, induced electricity test probe and aobvious
Display screen on the main frame outer surface, data processing circuit in main frame inner chamber, induced electricity test probe and display screen with
Data processing circuit is electrically connected, and data processing circuit is electrically connected with control circuit and induced electricity power discriminating gear.
Sensing electro-detection safety alarm device during electrical equipment grounding failure of the present invention, wherein, the sensing
Electric power discriminating gear includes single-chip microcomputer and data judging circuit, and single-chip microcomputer and data judging circuit are mounted in main frame inner chamber,
Single-chip microcomputer is electrically connected with non-contact inductive electrical measurement and data judging circuit, discriminating data circuit with control circuit harmony
Light alarm device is electrically connected.
Sensing electro-detection safety alarm device during electrical equipment grounding failure of the present invention, wherein, the acousto-optic
Warning device includes sound light alarming circuit, LED and loudspeaker, LED on the main frame outer surface, sound light alarming circuit and loudspeaker
In the main frame inner chamber, LED and loudspeaker electrically connects with sound light alarming circuit, sound light alarming circuit with control circuit and sense
Should electricity power discriminating gear electrical connection.
After using above structure, compared with prior art, sensing electro-detection peace during electrical equipment grounding failure of the present invention
Full warning device has advantages below：Warning device of the present invention is worn in wrist and is carried with by maintainer, works as maintenance
When personnel are close to electrical equipment, non-contact inductive electrical measurement just starts to detect the shell institute band induced electricity of electrical equipment
Amount, and sensing charge value of the induced electricity power discriminating gear then to measuring is analyzed differentiation, if numerical value is strong more than presetting
Angle value, acoustic-optic alarm will send corresponding alarm, so as to remind maintainer, reach the mesh for avoiding personal injury
's.
Brief description of the drawings
Sensing electro-detection safety alarm device when Fig. 1 is electrical equipment grounding failure of the present invention is worn on when in wrist
Dimensional structure diagram；
The structured flowchart of sensing electro-detection safety alarm device when Fig. 2 is electrical equipment grounding failure of the present invention；
Schematic diagram when Fig. 3 is present invention detection electrical appliance enclosure induced electricity.
Specific embodiment
Sensing electro-detection safety when with reference to the accompanying drawings and detailed description to electrical equipment grounding failure of the present invention
Warning device is described in further detail：
As depicted in figs. 1 and 2, in this embodiment, sensing electric-examination during electrical equipment grounding failure of the present invention
Surveying safety alarm device includes that main frame 3, wrist strap 5, control circuit 9, non-contact inductive electrical measurement 6, induced electricity power are sentenced
Other device 7 and acoustic-optic alarm 8, wrist strap 5, control circuit 9, non-contact inductive electrical measurement 6, induced electricity power are sentenced
Other device 7 and acoustic-optic alarm 8 are equipped with total power switch 4, non-contact inductive electrical measurement on main frame 3 on main frame 3
Device 6 is electrically connected with induced electricity power discriminating gear 7, and induced electricity power discriminating gear 7 is electrically connected with acoustic-optic alarm 8, institute
Non-contact inductive electrical measurement 6, induced electricity power discriminating gear 7 and acoustic-optic alarm 8 is stated to be electrically connected with control circuit 9
Connect.
Non-contact inductive electrical measurement 6 includes induced electricity test probe 62, data processing circuit 61 and display screen 60,
Induced electricity test probe 62 and display screen 60 are mounted in (see Fig. 1) on the outer surface of main frame 3, the induced electricity test probe 62 and display
Screen 60 is commercially available prod, and described data processing circuit 61 is in the inner chamber of main frame 3.Induced electricity power discriminating gear 7 includes
Single-chip microcomputer 70 and data judging circuit 71, single-chip microcomputer 70 and data judging circuit 71 are mounted in the inner chamber of main frame 3, in single-chip microcomputer 70
Prestore the discrimination standard value of setting.Acoustic-optic alarm 8 includes sound light alarming circuit 81, LED 82 and loudspeaker 80, LED
, mounted in (see Fig. 1) on the outer surface of main frame 3, sound light alarming circuit 81 and loudspeaker 80 are in the inner chamber of main frame 3 for lamp 82.
See Fig. 2, induced electricity test probe 62 and display screen 60 are electrically connected with data processing circuit 61, data processing circuit
61 are electrically connected with control circuit 9 and single-chip microcomputer 70 simultaneously, and single-chip microcomputer 70 is electrically connected with discriminating data circuit 71, discriminating data circuit
71 electrically connect with control circuit 9 and sound light alarming circuit 81 simultaneously, and LED 82 and loudspeaker 80 are electrically connected with sound light alarming circuit 81
Connect, sound light alarming circuit 81 is electrically connected with control circuit 9.
The application method of warning device of the present invention is：Referring to Fig. 1, maintainer passes through wrist strap 5 by warning device of the present invention
It is worn in the wrist of oneself and carries with, be further to increase security, preferably two hands (left hand and right hand) respectively wears one
It is individual.Press total power switch 4, alarm activation of the present invention, when maintainer is close to electrical equipment, induced electricity test probe
62 start the neighbouring electrical appliance enclosure institute band sensing electricity of detection using non-contact inductive electrical measurement principle, below referring to figure
2, the electric signal that data processing circuit 61 will be received changes into data signal, and measured result, single-chip microcomputer are shown by display screen 60
Discriminating data circuit 71 is reached after 70 reception data, discriminating data circuit 71 will be prestored in the data obtained and single-chip microcomputer 70 and set
Fixed discrimination standard value carries out size differentiation, differentiates that result reaches sound light alarming circuit 81 and carries out different degrees of sound and light alarm,
So as to remind maintainer, the purpose for avoiding personal injury is reached.
Under normal circumstances (the ground wire fault-free of electrical equipment), when maintainer operates at the scene, outside all of equipment
Shell should be not charged, and the result that induced electricity test probe 62 is measured is zero.When the ground wire of electrical equipment breaks down, with reference to figure
3, warning device of the present invention draws the sensing electricity of electrical appliance enclosure according to equation below detection：
In formula：U is the inductive voltage value for measuring, i.e. probe capacitance and derided capacitors two ends total voltage value；UfIt is partial pressure electricity
Hold both end voltage value (voltmeter direct measurement can be utilized), CfIt is derided capacitors value, CtIt is the electric capacity of induced electricity test probe
Value.
Warning device of the present invention utilizes contactless (direct induction type) induced electricity measuring principle, by measuring derided capacitors
Both end voltage value UfCalculate inductive voltage value U.Apparatus of the present invention are safety alarm device, therefore only respond high-voltage value, U values
It is generally large, it is that equipment and personal safety consider, CfMuch smaller than Ct.According to《Safe voltage》Pertinent regulations in (GB3805-83),
The present invention pre-sets three gears, respectively 42 volts, 36 volts and 24 volts.Work as U>At 24 volts, it is judged as weak induced electricity；Work as U>36
Fu Shi, is judged as strong induced electricity；Work as U>At 42 volts, it is judged as extremely strong induced electricity.
When U reaches presets discrimination standard value, triggering acoustic-optic alarm 8 is accordingly alarmed, sound and light alarm dress
Putting 8 includes sound and light.Work as U>At 24 volts, loudspeaker 80 send 2 seconds " ticking " sound in interval, while the green glow flicker of LED 82；When
U>At 36 volts, loudspeaker 80 send 1 second " ticking " sound in interval, while the gold-tinted flicker of LED 82；Work as U>At 42 volts, loudspeaker 80 are sent out
Go out 0.5 second " ticking " sound in interval, while the red flare of LED 82.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to model of the invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, those of ordinary skill in the art are to technical side of the invention
Various modifications and improvement that case is made, all should fall within the scope of protection of the present invention.
Claims (4)
1. sensing electro-detection safety alarm device during a kind of electrical equipment grounding failure, it is characterised in that：Including main frame (3),
Wrist strap (5), control circuit (9), non-contact inductive electrical measurement (6), induced electricity power discriminating gear (7) and acousto-optic report
Alarm device (8), the wrist strap (5), control circuit (9), non-contact inductive electrical measurement (6), the strong and weak differentiation dress of induced electricity
(7) and acoustic-optic alarm (8) are put on the main frame (3), total power switch (4) is housed on the main frame (3), it is described non-to connect
Touch senses electrical measurement (6) and is electrically connected with induced electricity power discriminating gear (7), induced electricity power discriminating gear (7)
Electrically connected with acoustic-optic alarm (8), the non-contact inductive electrical measurement (6), induced electricity power discriminating gear (7) and
Acoustic-optic alarm (8) is electrically connected with control circuit (9).
2. sensing electro-detection safety alarm device during electrical equipment grounding failure according to claim 1, its feature exists
In：The non-contact inductive electrical measurement (6) includes induced electricity test probe (62), data processing circuit (61) and display
Screen (60), the induced electricity test probe (62) and display screen (60) are on main frame (3) outer surface, and the data processing is electric
In main frame (3) inner chamber, the induced electricity test probe (62) and display screen (60) are and data processing circuit on road (61)
(61) electrically connect, the data processing circuit (61) electrically connects with control circuit (9) and induced electricity power discriminating gear (7).
3. sensing electro-detection safety alarm device during electrical equipment grounding failure according to claim 1, its feature exists
In：Induced electricity power discriminating gear (7) includes single-chip microcomputer (70) and data judging circuit (71), the single-chip microcomputer (70) and
Discriminating data circuit (71) in main frame (3) inner chamber, the single-chip microcomputer (70) and non-contact inductive electrical measurement (6)
Electrically connected with data judging circuit (71), the discriminating data circuit (71) is electric with control circuit (9) and acoustic-optic alarm (8)
Connection.
4. sensing electro-detection safety alarm device during electrical equipment grounding failure according to claim 1, its feature exists
In：The acoustic-optic alarm (8) includes sound light alarming circuit (81), LED (82) and loudspeaker (80), the LED (82)
On main frame (3) outer surface, the sound light alarming circuit (81) and loudspeaker (80) are mounted in main frame (3) inner chamber, the LED
Lamp (82) and loudspeaker (80) are electrically connected with sound light alarming circuit (81), the sound light alarming circuit (81) with control circuit (9)
Electrically connected with induced electricity power discriminating gear (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710200295.0A CN106885951A (en) | 2017-03-30 | 2017-03-30 | Sensing electro-detection safety alarm device during electrical equipment grounding failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710200295.0A CN106885951A (en) | 2017-03-30 | 2017-03-30 | Sensing electro-detection safety alarm device during electrical equipment grounding failure |
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| Publication Number | Publication Date |
|---|---|
| CN106885951A true CN106885951A (en) | 2017-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710200295.0A Pending CN106885951A (en) | 2017-03-30 | 2017-03-30 | Sensing electro-detection safety alarm device during electrical equipment grounding failure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666499A (en) * | 2020-12-16 | 2021-04-16 | 国网江苏省电力有限公司徐州供电分公司 | Alarm device for monitoring contact failure of line grounding switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2149632Y (en) * | 1992-06-30 | 1993-12-15 | 冒炳荣 | Safety cap for indicating the presence of electricity with language alarm |
| CN104267236A (en) * | 2014-09-18 | 2015-01-07 | 江苏省电力公司 | Wearable real-time monitoring device for human body induced electricity under high-voltage transmission line |
| CN104931765A (en) * | 2015-06-30 | 2015-09-23 | 国家电网公司 | Proximity alarm wrist guard |
| CN106093540A (en) * | 2016-06-02 | 2016-11-09 | 国网天津市电力公司 | A kind of protection against electric shock bracelet |
-
2017
- 2017-03-30 CN CN201710200295.0A patent/CN106885951A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2149632Y (en) * | 1992-06-30 | 1993-12-15 | 冒炳荣 | Safety cap for indicating the presence of electricity with language alarm |
| CN104267236A (en) * | 2014-09-18 | 2015-01-07 | 江苏省电力公司 | Wearable real-time monitoring device for human body induced electricity under high-voltage transmission line |
| CN104931765A (en) * | 2015-06-30 | 2015-09-23 | 国家电网公司 | Proximity alarm wrist guard |
| CN106093540A (en) * | 2016-06-02 | 2016-11-09 | 国网天津市电力公司 | A kind of protection against electric shock bracelet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666499A (en) * | 2020-12-16 | 2021-04-16 | 国网江苏省电力有限公司徐州供电分公司 | Alarm device for monitoring contact failure of line grounding switch |
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Application publication date: 20170623 |