CN202600029U - High-voltage live display apparatus - Google Patents
High-voltage live display apparatus Download PDFInfo
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- CN202600029U CN202600029U CN 201220147690 CN201220147690U CN202600029U CN 202600029 U CN202600029 U CN 202600029U CN 201220147690 CN201220147690 CN 201220147690 CN 201220147690 U CN201220147690 U CN 201220147690U CN 202600029 U CN202600029 U CN 202600029U
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Abstract
The utility model discloses a high-voltage live display apparatus, comprising a sense unit and a display unit connected with the sense unit. The sense unit is a non-contact capacitive sensor which is in non-contact connection with an external high-voltage loop. The display unit comprises a signal follower circuit, a low-pass filter circuit, a voltage doubling rectifying circuit, an interference elimination circuit, an amplifying circuit, a Schmidt trigger circuit and an LED display circuit, which are connected in order. As an input terminal of the display unit, an input terminal of the signal follower circuit is connected with an output terminal of the sense unit. The high-voltage live display apparatus of the utility model is fixedly mounted on a telegraph pole for a certain outdoor section of a high-voltage loop feed-out line so as to satisfy the requirement of a job with too many outdoor interference sources. The high-voltage live display apparatus is safe and reliable in operation, simple in design and low in cost and is easy to realize, and therefore has god application prospects.
Description
Technical field
The utility model relates to a kind of electrical detection facility, is 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.
The utility model content
The purpose of the utility model 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 utility model 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 beneficial effect of the utility model is: the high voltage display device of the utility model 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 the high voltage display device of the utility model.
Fig. 2 is the system chart of the high voltage display device of the utility model.
Embodiment
To combine Figure of description below, the utility model will be described further.Following examples only are used for more clearly explaining the technical scheme of the utility model, and can not limit the protection domain of the utility model 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, principal character and the advantage of the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model 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 |
|---|---|---|---|
| CN 201220147690 CN202600029U (en) | 2012-04-10 | 2012-04-10 | High-voltage live display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220147690 CN202600029U (en) | 2012-04-10 | 2012-04-10 | High-voltage live display apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202600029U true CN202600029U (en) | 2012-12-12 |
Family
ID=47317560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220147690 Expired - Fee Related CN202600029U (en) | 2012-04-10 | 2012-04-10 | High-voltage live display apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202600029U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608398A (en) * | 2012-04-10 | 2012-07-25 | 苏州苏海亚电气有限公司 | High-voltage electrified display device |
-
2012
- 2012-04-10 CN CN 201220147690 patent/CN202600029U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608398A (en) * | 2012-04-10 | 2012-07-25 | 苏州苏海亚电气有限公司 | High-voltage electrified display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20130410 |