CN102608398A - High-voltage electrified display device - Google Patents
High-voltage electrified display device Download PDFInfo
- Publication number
- CN102608398A CN102608398A CN2012101027568A CN201210102756A CN102608398A CN 102608398 A CN102608398 A CN 102608398A CN 2012101027568 A CN2012101027568 A CN 2012101027568A CN 201210102756 A CN201210102756 A CN 201210102756A CN 102608398 A CN102608398 A CN 102608398A
- Authority
- CN
- China
- Prior art keywords
- circuit
- sensing unit
- display device
- voltage
- input end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a high-voltage electrified display device which comprises a sensing unit and a displaying unit connected with the sensing unit, wherein the sensing unit is in noncontact connection with an external high-voltage loop through a noncontact capacitance sensor; the displaying unit comprises a signal following circuit, a low-pass filtering circuit, a voltage-doubling rectifying circuit, an interference elimination circuit, an amplifying circuit, a schimtt trigger circuit and an LED (Light Emitting Diode) display circuit which are connected in sequence; and an input end of the signal following circuit is served as the input end of the displaying unit and is connected with an output end of the sensing unit. The high-voltage electrified display device provided by the invention is fixedly mounted on a telegraph pole of an outdoor section of high-voltage loop feeding wire, meets the working demand of outdoor excessive interference sources and has the advantages of safe and reliable running, simple design, easiness in realizing, low cost, and excellent application prospect.
Description
Technical field
The present invention relates to a kind of electrical detection facility, be specifically related to be used for that 3kV is above, the charged display device of the Circuits System high tension loop of frequency 50Hz.
Background technology
High voltage display device, be used for nominal voltage 3kV and more than, the employed charged display device of moving in the electric system of frequency 50Hz of indoor and outdoor high-voltage electrical equipment.Charged display device is used for providing to the operations staff information of high voltage electric equipment installation place main circuit voltage state.The existing high voltage display device charged situation that adopt the three-phase electricity in the direct contact measurement high tension loop more; Need to increase the security that buffer circuit just can be guaranteed device; But increased the cost of device virtually; The effective external interference between filtering high-frequency signal, the hi-line etc. greatly reduces the reliability of signal input, thereby reduces the accuracy that electrification in high voltage shows in addition.
Summary of the invention
The objective of the invention is need increase the security that buffer circuit is guaranteed device in order to overcome existing high voltage display device; Increased device cost and can not the interference of effective filtering outer signals; Reduce the reliability of signal input, thereby influence the problem of the accuracy of electrification in high voltage demonstration.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopted is:
A kind of high voltage display device; Comprise sensing unit and the display unit that is connected with sensing unit; It is characterized in that: said sensing unit adopts non-contact capacitance formula sensor to be connected with the noncontact of external high pressure loop; Said display unit comprises signal follow circuit, low-pass filter circuit, voltage doubling rectifing circuit, elimination interfered circuit, amplifying circuit, schmidt trigger circuit and the LED display circuit that links to each other successively, and the input end of said signal follow circuit is connected with the output terminal of sensing unit as the input end of display unit.
Aforesaid high voltage display device; It is characterized in that: said display unit also comprises AC/DC power circuit and warning circuit; Each circuit of said AC/DC power circuit and other is connected, and the input end of said warning circuit is connected with the signal output part of schmidt trigger circuit.
The invention has the beneficial effects as follows: high voltage display device of the present invention adopts non-contact capacitance formula sensor to import as signal; It does not directly contact with hi-line; Utilize near the electric field of hi-line to check high-tension line whether charged; After signal Processing, the LED indicating circuit can send electricity or not have electrical information.This device is fixedly mounted on the electric pole of outdoor certain section outgoing, satisfies the too much job requirement of outdoor interference source, safe and reliable to operation, simplicity of design, be easy to realize, cost is low, have a good application prospect.
Description of drawings
Fig. 1 is the structural representation of high voltage display device of the present invention.
Fig. 2 is the system chart of high voltage display device of the present invention.
Embodiment
To combine Figure of description below, the present invention will be described further.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
Like Fig. 1 and shown in Figure 2; A kind of high voltage display device comprises sensing unit and the display unit that is connected with sensing unit, and sensing unit adopts non-contact capacitance formula sensor to be connected with the noncontact of external high pressure loop; The principle of work of non-contact capacitance formula sensor is through measuring the voltage of sampling capacitor; Can judge the size of electric field intensity,, judge that high tension loop has electricity and do not have according to the size of electric field intensity; Display unit comprises signal follow circuit, low-pass filter circuit, voltage doubling rectifing circuit, elimination interfered circuit, amplifying circuit, schmidt trigger circuit and the LED display circuit that links to each other successively; The input end of said signal follow circuit is connected with the output terminal of sensing unit as the input end of display unit, and wherein the signal follow circuit is used to isolate interference source, and low-pass filter circuit is used to keep power frequency component; Second harmonic on the elimination high pressure outgoing and quintuple harmonics disturb, and improve the reliability of device; Eliminating interfered circuit is used for existing mutual undesired signal and extraneous other undesired signal (for example high-frequency signal) elimination between the adjacent lines; Be amplified to the trigger voltage of schmidt trigger circuit upset then through amplifying circuit; The signal output part of schmidt trigger circuit; Be used for controlling the LED lamp on/off of LED display circuit, then red light lights, green light extinguishes if high tension loop has electricity here; If no electric green light lights, red light extinguishes.
Said display unit also comprises AC/DC power circuit and warning circuit; Each circuit of said AC/DC power circuit and other is connected; AC/DC power circuit is alternating current to be changed into direct current for each circuit WV is provided, and the input end of said warning circuit is connected with the signal output part of schmidt trigger circuit, and warning circuit is when the LED of LED display circuit lamp breaks down; Send the buzzer of alarm and remind user's set to break down, need maintenance.
More than show and described ultimate principle of the present invention, principal character and advantage.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the instructions just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (2)
1. high voltage display device; Comprise sensing unit and the display unit that is connected with sensing unit; It is characterized in that: said sensing unit adopts non-contact capacitance formula sensor to be connected with the noncontact of external high pressure loop; Said display unit comprises signal follow circuit, low-pass filter circuit, voltage doubling rectifing circuit, elimination interfered circuit, amplifying circuit, schmidt trigger circuit and the LED display circuit that links to each other successively, and the input end of said signal follow circuit is connected with the output terminal of sensing unit as the input end of display unit.
2. high voltage display device according to claim 1; It is characterized in that: said display unit also comprises AC/DC power circuit and warning circuit; Each circuit of said AC/DC power circuit and other is connected, and the input end of said warning circuit is connected with the signal output part of schmidt trigger circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101027568A CN102608398A (en) | 2012-04-10 | 2012-04-10 | High-voltage electrified display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101027568A CN102608398A (en) | 2012-04-10 | 2012-04-10 | High-voltage electrified display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102608398A true CN102608398A (en) | 2012-07-25 |
Family
ID=46525926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101027568A Pending CN102608398A (en) | 2012-04-10 | 2012-04-10 | High-voltage electrified display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102608398A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106477476A (en) * | 2016-12-27 | 2017-03-08 | 国网山东省电力公司临沂供电公司 | Electric power electrical verification maintenance ladder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61221667A (en) * | 1984-08-24 | 1986-10-02 | Takaoka Ind Ltd | Display device for charging state |
| CN201060238Y (en) * | 2007-07-20 | 2008-05-14 | 南京胜太电力工程有限公司 | High-pressure electrified displaying interlock apparatus detector |
| CN201478877U (en) * | 2009-04-14 | 2010-05-19 | 兰州银利电器设备有限责任公司 | Non-contact type high-voltage detecting protection device |
| CN201654113U (en) * | 2010-04-08 | 2010-11-24 | 郑琛 | Induction type high-voltage electrified display device |
| CN201909808U (en) * | 2010-07-20 | 2011-07-27 | 南京胜太迪玛斯电力系统有限公司 | 1000-kv extra-high voltage electrified display device |
| CN202600029U (en) * | 2012-04-10 | 2012-12-12 | 苏州苏海亚电气有限公司 | High-voltage live display apparatus |
-
2012
- 2012-04-10 CN CN2012101027568A patent/CN102608398A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61221667A (en) * | 1984-08-24 | 1986-10-02 | Takaoka Ind Ltd | Display device for charging state |
| CN201060238Y (en) * | 2007-07-20 | 2008-05-14 | 南京胜太电力工程有限公司 | High-pressure electrified displaying interlock apparatus detector |
| CN201478877U (en) * | 2009-04-14 | 2010-05-19 | 兰州银利电器设备有限责任公司 | Non-contact type high-voltage detecting protection device |
| CN201654113U (en) * | 2010-04-08 | 2010-11-24 | 郑琛 | Induction type high-voltage electrified display device |
| CN201909808U (en) * | 2010-07-20 | 2011-07-27 | 南京胜太迪玛斯电力系统有限公司 | 1000-kv extra-high voltage electrified display device |
| CN202600029U (en) * | 2012-04-10 | 2012-12-12 | 苏州苏海亚电气有限公司 | High-voltage live display apparatus |
Non-Patent Citations (2)
| Title |
|---|
| 孙振权 等: "高压带电显示及闭锁装置现状及发展前景", 《高压电器》, vol. 45, no. 4, 31 August 2009 (2009-08-31) * |
| 黄新波 等: "高压带电数字显示闭锁装置设计", 《华东电力》, vol. 37, no. 5, 31 May 2009 (2009-05-31) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106477476A (en) * | 2016-12-27 | 2017-03-08 | 国网山东省电力公司临沂供电公司 | Electric power electrical verification maintenance ladder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201886066U (en) | Transformer core grounding current monitor | |
| CN104071715A (en) | Near-to-high-voltage safety prewarning method for construction hoist | |
| CN104963726A (en) | Mining wireless proximity inductive switch | |
| CN202889220U (en) | Switching power supply with input overvoltage detection and alarm circuit | |
| CN202600029U (en) | High-voltage live display apparatus | |
| CN102608398A (en) | High-voltage electrified display device | |
| CN107328488A (en) | Combined type trans system based on electric field induction | |
| CN203217713U (en) | Equipotential high voltage electrification display and living body approach alarm circuit and device thereof | |
| CN204066325U (en) | The nearly electric safety early warning device of construction machinery | |
| CN205581195U (en) | A cubical switchboard area electrical detection circuitry for middling pressure system | |
| CN208156120U (en) | A kind of high-tension apparatus electric leakage alarm device | |
| CN205788653U (en) | A kind of progressive safety alarm for nearly electro-detection | |
| CN201181313Y (en) | High voltage live display device | |
| CN103245872B (en) | AC fuse condition checkout gear | |
| CN206470916U (en) | A kind of high pressure alarming device | |
| CN201812026U (en) | Electric cable recognizer for detecting electric cable operation and stoppage | |
| CN202770902U (en) | Grounding electricity testing indicating device | |
| CN204705692U (en) | A kind of portable cable thread break detector | |
| CN206758347U (en) | A kind of indoor alternating current high voltage vacuum load switch | |
| CN105403757A (en) | Intelligent safety bracelet for maintenance and debugging of alternating-current electrical equipment | |
| CN203275504U (en) | High-voltage electrification display | |
| CN103792460A (en) | Short-circuiting fault monitoring circuit of fault indicator | |
| CN203405500U (en) | Comprehensive monitoring device for overhead lines | |
| CN209264816U (en) | A kind of current detection circuit of frequency converter | |
| CN103592496A (en) | Safe contact rail voltage monitoring device with warning light |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120725 |