CN203250371U - A cable monitor - Google Patents
A cable monitor Download PDFInfo
- Publication number
- CN203250371U CN203250371U CN 201320290724 CN201320290724U CN203250371U CN 203250371 U CN203250371 U CN 203250371U CN 201320290724 CN201320290724 CN 201320290724 CN 201320290724 U CN201320290724 U CN 201320290724U CN 203250371 U CN203250371 U CN 203250371U
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- CN
- China
- Prior art keywords
- cable
- fdd
- warning line
- resistor
- utility
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a cable monitor. A pair of idle wires in a cable form a warning line. The head ends of idle wires are connected with an alarm, while the tail ends of the idle wires are connected in a short circuit manner in a distribution box. The output end of the warning line is connected with an optical coupler VLC through a resistor R3 and a potentiometer RP. The output end of the optical coupler VLC is connected with a FDD-5 emitting module U1 successively though a resistor R2 and a transistor Q1. When the cable is cut and stolen, modulated high-frequency electromagnet wave alarm information is transmitted to an external receiving machine through the FDD-5 emitting module U1 in order to achieve an online monitoring purpose to effectively prevent the cable from being stolen. The cable monitor has economical and practical characteristics and can be used for burglar alarm of outdoor communication cables.
Description
Technical field
The utility model relates to field of electronic circuitry, particularly be the cable monitoring instrument.
Background technology
Because telecommunication cable is inner copper more, some undesirables often steal cable and obtain copper wire and sell dolly shop, the earning illicit gain, and this causes the tremendous economic loss to national wealth.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of cable monitoring instrument is provided.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of cable monitoring instrument, a pair of ceases to be busy by cable inside consists of warning line, its top device taking alarm, end connects at the coupling box internal short-circuit, the output terminal of described warning line is connected to photo-coupler VLC by resistor R3 and potentiometer RP, and the output terminal of described photo-coupler VLC is connected to FDD-5 transmitter module U1 through resistance R 2, transistor Q1 successively.
By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: when cable is cut, can launch modulated frequency electromagnetic waves warning message by the external Receiving Host of FDD-5 transmitter module, reach the stolen on-line monitoring purpose of effective strick precaution cable, have economical and practical characteristics, can be used for the burglar alarm of open-air telecommunication cable.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Further specify the utility model below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, cable monitoring instrument of the present utility model, a pair of ceases to be busy by cable inside consists of warning line, its top device taking alarm, end connects at the coupling box internal short-circuit, the output terminal of described warning line is connected to photo-coupler VLC by resistor R3 and potentiometer RP, and the output terminal of described photo-coupler VLC is connected to FDD-5 transmitter module U1 through resistance R 2, transistor Q1 successively.
At ordinary times (when cable is intact), the lumination of light emitting diode of photo-coupler VLC inside makes the photistor conducting, is output as low-potential signal, so FDD-5 transmitter module U1 internal circuit do not work, and does not send alerting signal.When cable is cut, the warning line open circuit, the light emitting diode of photo-coupler VLC inside is extinguished, the photistor cut-off, photo-coupler VLC exports high level signal, this signal is input to FDD-5 transmitter module U1 the 2nd pin, and deliver to FDD-5 transmitter module U1 the 3rd pin, be modulation signal input end CP, high-frequency signal to emission is modulated, the antenna TX that FDD-5 transmitter module U1 output terminal connects is that external Receiving Host is launched modulated frequency electromagnetic waves warning message, can be used for the burglar alarm of open-air telecommunication cable.
Above-described only is a preferred embodiment of the present utility model, can not limit the scope that the utility model is implemented, and every equalization of doing according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.
Claims (1)
1. cable monitoring instrument, it is characterized in that: a pair of ceases to be busy by cable inside consists of warning line, its top device taking alarm, end connects at the coupling box internal short-circuit, the output terminal of described warning line is connected to photo-coupler VLC by resistor R3 and potentiometer RP, and the output terminal of described photo-coupler VLC is connected to FDD-5 transmitter module U1 through resistance R 2, transistor Q1 successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320290724 CN203250371U (en) | 2013-05-26 | 2013-05-26 | A cable monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320290724 CN203250371U (en) | 2013-05-26 | 2013-05-26 | A cable monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203250371U true CN203250371U (en) | 2013-10-23 |
Family
ID=49376797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320290724 Expired - Fee Related CN203250371U (en) | 2013-05-26 | 2013-05-26 | A cable monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203250371U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109272683A (en) * | 2018-11-22 | 2019-01-25 | 国网宁夏电力有限公司宁东供电公司 | The antitheft single-ended monitoring device of the power cable that do not put into operation |
| CN111583597A (en) * | 2020-05-12 | 2020-08-25 | 深圳市商厨科技有限公司 | Surface treatment device is used in stainless steel goods production |
-
2013
- 2013-05-26 CN CN 201320290724 patent/CN203250371U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109272683A (en) * | 2018-11-22 | 2019-01-25 | 国网宁夏电力有限公司宁东供电公司 | The antitheft single-ended monitoring device of the power cable that do not put into operation |
| CN109272683B (en) * | 2018-11-22 | 2024-03-22 | 国网宁夏电力有限公司宁东供电公司 | Anti-theft single-end monitoring device for power cable without operation |
| CN111583597A (en) * | 2020-05-12 | 2020-08-25 | 深圳市商厨科技有限公司 | Surface treatment device is used in stainless steel goods production |
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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: 20131023 Termination date: 20140526 |