CN205541252U - Electric fire detector of taking short circuit, opening circuit and report to police - Google Patents
Electric fire detector of taking short circuit, opening circuit and report to police Download PDFInfo
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- CN205541252U CN205541252U CN201620352573.5U CN201620352573U CN205541252U CN 205541252 U CN205541252 U CN 205541252U CN 201620352573 U CN201620352573 U CN 201620352573U CN 205541252 U CN205541252 U CN 205541252U
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Abstract
The utility model discloses an electric fire detector of taking short circuit, opening circuit and report to police, first wiring end and second wiring end including being used for the junction current mutual -inductor still include short circuit detection module and open circuit detection module that short circuit detection module includes current sample unit, current comparison unit and a indicating units, the detection module that opens circuit includes voltage sample unit, voltage comparing unit and the 2nd indicating units. The utility model provides an electric fire detector in the detector short circuit or when opening circuit, can in time be reported to the police, the suggestion staff.
Description
Technical field
This utility model relates to detector, particularly to electrical fire-detector.
Background technology
Electrical fire-detector is also residual current formula fire detector, for detecting the leakage current in electric wiring, measures the probability that fire occurs.
During normal use, need current transformer is linked into electrical fire-detector, by current transformer, the leakage current in electric wiring is sampled, then sampled value is given to electrical fire-detector, compare with the threshold value being preset in detector, measure the probability that fire occurs, and corresponding result is shown on detector panel.
But, if current transformer loosens with electrical fire-detector wiring, cause electrical fire-detector cannot accurately obtain sampled value, influence whether that detector normally works.
Utility model content
The purpose of this utility model is to provide the short circuit of a kind of band, the electrical fire-detector of breaking alarming, when detector short circuit or open circuit, can and alarm, point out staff.
Above-mentioned purpose of the present utility model technical scheme is that.
A kind of electrical fire-detector, including the first terminals and the second terminals for connecting current transformer, also includes short-circuit detecting module and open circuit detection module,
Described short-circuit detecting module includes current sampling unit, electric current comparing unit and the first indicating member, described current sampling unit gathers the leakage current in electric wiring to obtain a sampled value by the first terminals and the second terminals, this sampled value and a threshold value are compared and control the first indicating member work according to comparative result by described electric current comparing unit, and described first indicating member is located on the panel of detector；
Described open circuit detection module includes voltage sampling unit, voltage comparison unit and the second indicating member, described voltage sampling unit gathers the drain voltage in electric wiring to obtain a sampled value by the first terminals and the second terminals, this sampled value and a threshold value are compared and control the second indicating member work according to comparative result by described voltage comparison unit, and described second indicating member is located on the panel of detector.
By using technique scheme, the most short-circuit to detect electric wiring by the short-circuit detecting module being built in detector, by being built in the open circuit detection module of detector to detect electric wiring whether open circuit, and utilize first, second indicating member on panel to make corresponding prompting, so, once detector loosens or wiring error with current transformer connection, can pass through detector alarm immediately, prompting staff, gets rid of hidden danger；Meanwhile, the first terminals and the second terminals are utilized to reach three kinds of functions, one, be used as and terminals that current transformer is conventional；Two, as the current acquisition end of short-circuit detecting module；Three, as the voltage acquisition end of open circuit detection module；So, one facilitates wiring, and two reduce the Acquisition Error of each intermodule.
Preferred: described first indicating member includes that display lamp, described display lamp are located on the panel of detector.
Preferred: described second indicating member includes that display lamp, described display lamp are located on the panel of detector.
Preferred: the threshold value being supplied to electric current comparing unit is exported by the first reference cell, it is provided that export by the second reference cell to the threshold value of voltage comparison unit, described first, second reference cell belongs to a multi output regulating circuit together.
By using technique scheme, utilize same regulating circuit, it is possible to decrease the error between two threshold values, and then reduce the error between short-circuit detecting module and open circuit detection module.
Accompanying drawing explanation
Fig. 1 is the structure chart of detector in the present embodiment；
Fig. 2 is the partial circuit block diagram of detector in the present embodiment.
In figure, the 1, first terminals；2, the second terminals；3, display lamp；4, display lamp；5, panel；100, short-circuit detecting module；200, open circuit detection module.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
With reference to Fig. 1, detector in the present embodiment, including the first terminals 1 and the second terminals 2 for connecting current transformer, also include the display lamp 3 on panel 5 and display lamp 4, also include short-circuit detecting module 100 and the open circuit detection module 200 being built in detector.Display lamp 3 is shinny when short-circuit detecting module 100 judges electric wiring short circuit, and display lamp 4 is shinny when open circuit detection module 200 judges electric wiring open circuit.
With reference to Fig. 2, detector in the present embodiment, there is inside it short-circuit detecting module 100 and open circuit detection module 200, wherein, short-circuit detecting module 100 includes current sampling unit, electric current comparing unit and the first indicating member, current sampling unit gathers the leakage current in electric wiring to obtain a sampled value by the first terminals 1 and the second terminals 2, and this sampled value is compared with a threshold value and works according to comparative result control display lamp 3 by electric current comparing unit；Wherein, open circuit detection module 200 includes voltage sampling unit, voltage comparison unit and the second indicating member, voltage sampling unit gathers the drain voltage in electric wiring to obtain a sampled value by the first terminals 1 and the second terminals 2, and this sampled value is compared with a threshold value and works according to comparative result control display lamp 4 by voltage comparison unit.It addition, above-mentioned first, second indicating member mentioned may also include buzzer, constitute Acoustooptic indicator with display lamp 3,4.
So, the most short-circuit to detect electric wiring by the short-circuit detecting module 100 being built in detector, by being built in the open circuit detection module 200 of detector to detect electric wiring whether open circuit, and utilize first, second indicating member on panel 5 to make corresponding prompting, so, once detector loosens or wiring error with current transformer connection, can pass through detector alarm immediately, prompting staff, gets rid of hidden danger；Meanwhile, the first terminals 1 and the second terminals 2 are utilized to reach three kinds of functions, one, be used as and terminals that current transformer is conventional；Two, as the current acquisition end of short-circuit detecting module 100；Three, as the voltage acquisition end of open circuit detection module 200；So, one, owing to reducing terminals quantity, facilitates wiring, and two is identical due to each parameter of same terminals, reduces the Acquisition Error of each intermodule.
Additionally, it is provided that exported to the threshold value of electric current comparing unit by the first reference cell, it is provided that exporting by the second reference cell to the threshold value of voltage comparison unit, the first reference cell, the second reference cell belong to a multi output regulating circuit together.So, utilize same regulating circuit, it is possible to decrease the error between two threshold values, and then reduce the error between short-circuit detecting module 100 and open circuit detection module 200.
This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made after reading this specification by those skilled in the art as required does not has the amendment of creative contribution, but as long as all being protected by Patent Law in right of the present utility model.
Claims (4)
1. a band short circuit, the electrical fire-detector of breaking alarming, including the first terminals (1) and the second terminals (2) for connecting current transformer, it is characterized in that, also include short-circuit detecting module (100) and open circuit detection module (200)
Described short-circuit detecting module (100) includes current sampling unit, electric current comparing unit and the first indicating member, described current sampling unit gathers the leakage current in electric wiring to obtain a sampled value by the first terminals (1) and the second terminals (2), this sampled value and a threshold value are compared and control the first indicating member work according to comparative result by described electric current comparing unit, and described first indicating member is located on the panel (5) of detector；
Described open circuit detection module (200) includes voltage sampling unit, voltage comparison unit and the second indicating member, described voltage sampling unit gathers the drain voltage in electric wiring to obtain a sampled value by the first terminals (1) and the second terminals (2), this sampled value and a threshold value are compared and control the second indicating member work according to comparative result by described voltage comparison unit, and described second indicating member is located on the panel (5) of detector.
Detector the most according to claim 1, it is characterised in that described first indicating member includes that display lamp (3), described display lamp (3) are located on the panel (5) of detector.
Detector the most according to claim 1, it is characterised in that described second indicating member includes that display lamp (4), described display lamp (4) are located on the panel (5) of detector.
Detector the most according to claim 1, it is characterized in that, the threshold value being supplied to electric current comparing unit is exported by the first reference cell, it is provided that export by the second reference cell to the threshold value of voltage comparison unit, and described first, second reference cell belongs to a multi output regulating circuit together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620352573.5U CN205541252U (en) | 2016-04-22 | 2016-04-22 | Electric fire detector of taking short circuit, opening circuit and report to police |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620352573.5U CN205541252U (en) | 2016-04-22 | 2016-04-22 | Electric fire detector of taking short circuit, opening circuit and report to police |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205541252U true CN205541252U (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620352573.5U Active CN205541252U (en) | 2016-04-22 | 2016-04-22 | Electric fire detector of taking short circuit, opening circuit and report to police |
Country Status (1)
| Country | Link |
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| CN (1) | CN205541252U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950458A (en) * | 2017-03-15 | 2017-07-14 | 国家电网公司 | The short circuit of low pressure uniline and disconnection detection device |
| CN106971493A (en) * | 2017-05-31 | 2017-07-21 | 上海蜀昌电气有限公司 | Guide tracked fire detector |
| CN107607827A (en) * | 2017-10-23 | 2018-01-19 | 深圳市捷代电子科技有限公司 | Vehicle diagnosis seat safety detection circuit |
-
2016
- 2016-04-22 CN CN201620352573.5U patent/CN205541252U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950458A (en) * | 2017-03-15 | 2017-07-14 | 国家电网公司 | The short circuit of low pressure uniline and disconnection detection device |
| CN106971493A (en) * | 2017-05-31 | 2017-07-21 | 上海蜀昌电气有限公司 | Guide tracked fire detector |
| CN107607827A (en) * | 2017-10-23 | 2018-01-19 | 深圳市捷代电子科技有限公司 | Vehicle diagnosis seat safety detection circuit |
| CN107607827B (en) * | 2017-10-23 | 2019-12-06 | 深圳市捷代电子科技有限公司 | Safety detection circuit of automobile diagnosis seat |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |