CN203192139U - Alarm device used for preventing cable from being cut sneakingly - Google Patents
Alarm device used for preventing cable from being cut sneakingly Download PDFInfo
- Publication number
- CN203192139U CN203192139U CN 201320182168 CN201320182168U CN203192139U CN 203192139 U CN203192139 U CN 203192139U CN 201320182168 CN201320182168 CN 201320182168 CN 201320182168 U CN201320182168 U CN 201320182168U CN 203192139 U CN203192139 U CN 203192139U
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- switch
- resistance
- short
- triode
- diode
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Abstract
The utility model discloses an alarm device used to prevent a cable from being cut sneakingly. The device comprises a short-circuit wire, a first resistor, a second resistor, a diode, a light emitting diode, a capacitor, a first switch, a second switch, a triode, a relay and a buzzer. The short-circuit wire passes through the cable. A first terminal of the short-circuit wire is connected with the first terminal of the first resistor, a base electrode of the diode and the first terminal of the capacitor respectively. A second terminal of the short-circuit wire is connected with a second terminal of the capacitor, an emitting electrode of the triode, a cathode of the light emitting diode and a first terminal of the buzzer and then is grounded. Aiming at a disadvantage in the prior art, the utility model designs the alarm device used to prevent the cable from being cut sneakingly. The device is not easy to be damaged. A circuit structure is simple. The price is cheap and stability is high. The device possesses a popularization value.
Description
Technical field
The utility model relates to a kind of warning device, relates in particular to a kind of anti-cable and cuts warning device steathily.
Background technology
The telecommunication cable of present many units adopts hangs empty cable, because many cables are positioned at the field, and stolen cutting often.The alarm apparatus that adopts is most of expensive, destroyed easily at present.
The utility model content
The purpose of this utility model with regard to be to provide in order to address the above problem a kind of simple in structure, cost is low, be difficult for ruined anti-cable cuts warning device steathily.
In order to achieve the above object, the utility model has adopted following technical scheme:
A kind of anti-cable cuts warning device steathily, comprise short-circuit line, first resistance, second resistance, diode, light emitting diode, electric capacity, first switch, second switch, triode, relay Homeway.com Chinese percussion instrument, described short-circuit line passes cable, first end of described short-circuit line respectively with first end of described first resistance, first end of the base stage of described triode and described electric capacity is connected, second end of described short-circuit line respectively with second end of described electric capacity, the emitter of described triode, first end of the negative pole of described light emitting diode and described news Chinese percussion instrument is connected back ground connection, second end of described first resistance respectively with the negative pole of described diode, first end of described relay, first end of described first switch and first end of described second switch are connected, second end of described first switch is voltage input end, the positive pole of described diode is connected with second end of described relay and the collector of described triode respectively, second end of described second switch is connected with first end of described second resistance, second end of described second resistance is connected with the positive pole of described light emitting diode, and the 3rd end of described second switch is connected with second end of described news Chinese percussion instrument.
The beneficial effects of the utility model are:
The utility model is at the shortcoming of prior art, designed a kind of be difficult for destroyed, circuit structure simple, low price, the high a kind of anti-cable of stability cut warning device steathily.
Description of drawings
Fig. 1 is the circuit diagram that the anti-cable of the utility model cuts warning device steathily.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, the anti-cable of the utility model cuts warning device steathily, comprise short-circuit line, first resistance R 1, second resistance R 2, diode D, LED, capacitor C, first switch S 1, second switch S2, triode VT, relay K Homeway.com Chinese percussion instrument, short-circuit line passes cable, first end of short-circuit line respectively with first end of first resistance R 1, first end of the base stage of triode VT and capacitor C is connected, second end of short-circuit line respectively with second end of capacitor C, the emitter of triode VT, first end of the negative pole Homeway.com Chinese percussion instrument of LED connects back ground connection, second end of first resistance R 1 respectively with the negative pole of diode D, first end of relay K, first end of first switch S 1 is connected with first end of second switch S2, second end of first switch S 1 is voltage input end, the positive pole of diode D is connected with second end of relay K and the collector of triode VT respectively, second end of second switch S2 is connected with first end of second resistance R 2, second end of second resistance R 2 is connected with the positive pole of LED, and the 3rd end of second switch S2 is connected with second end of news Chinese percussion instrument.
The principle of work of the circuit of measurement and control of use the utility model capacitive transducer is as follows:
Utilize a pair of ceases to be busy in the cable, on the coupling box of ceases to be busy other end terminal, its short circuit is got up.Just often owing to the base stage and emission intereelectrode short-circuit of triode VT, triode VT does not have base current and ends cable, and this moment, relay K was failure to actuate, and second switch S2 connects first end of second resistance R 2, and LED shows green operate as normal indication.When cable is stolen when cutting, triode VT gets access to base current and conducting, relay K energising adhesive, and the news Chinese percussion instrument obtains power supply and sends chimes of doom.Wherein, diode D is the protection diode; first resistance R 1 is the biasing resistor of triode VT; capacitor C is to cause false alarm setting when preventing from stronger induction low frequency signal is arranged in the cable; second resistance R 2 is current-limiting resistance, and news Chinese percussion instrument selection work voltage is 12V, when closing power supply; the its internal circuit oscillatory work sends the melodious sound and gets final product.
Claims (1)
1. an anti-cable cuts warning device steathily, comprise short-circuit line, it is characterized in that: also comprise first resistance, second resistance, diode, light emitting diode, electric capacity, first switch, second switch, triode, relay Homeway.com Chinese percussion instrument, described short-circuit line passes cable, first end of described short-circuit line respectively with first end of described first resistance, first end of the base stage of described triode and described electric capacity is connected, second end of described short-circuit line respectively with second end of described electric capacity, the emitter of described triode, one end of the negative pole of described light emitting diode and described news Chinese percussion instrument the is connected back ground connection, second end of described first resistance respectively with the negative pole of described diode, first end of described relay, first end of described first switch and first end of described second switch are connected, second end of described first switch is voltage input end, the positive pole of described diode is connected with second end of described relay and the collector of described triode respectively, second end of described second switch is connected with first end of described second resistance, second end of described second resistance is connected with the positive pole of described light emitting diode, and the 3rd end of described second switch is connected with second end of described news Chinese percussion instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320182168 CN203192139U (en) | 2013-04-12 | 2013-04-12 | Alarm device used for preventing cable from being cut sneakingly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320182168 CN203192139U (en) | 2013-04-12 | 2013-04-12 | Alarm device used for preventing cable from being cut sneakingly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203192139U true CN203192139U (en) | 2013-09-11 |
Family
ID=49108980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320182168 Expired - Fee Related CN203192139U (en) | 2013-04-12 | 2013-04-12 | Alarm device used for preventing cable from being cut sneakingly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203192139U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535880A (en) * | 2014-12-08 | 2015-04-22 | 李理 | Warning device for electric wire |
| CN104700527A (en) * | 2014-08-28 | 2015-06-10 | 安徽工程大学 | Cable anti-theft device and method thereof |
-
2013
- 2013-04-12 CN CN 201320182168 patent/CN203192139U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104700527A (en) * | 2014-08-28 | 2015-06-10 | 安徽工程大学 | Cable anti-theft device and method thereof |
| CN104535880A (en) * | 2014-12-08 | 2015-04-22 | 李理 | Warning device for electric wire |
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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: 20130911 Termination date: 20140412 |