CN202976370U - Cable antitheft alarm device - Google Patents
Cable antitheft alarm device Download PDFInfo
- Publication number
- CN202976370U CN202976370U CN 201220636881 CN201220636881U CN202976370U CN 202976370 U CN202976370 U CN 202976370U CN 201220636881 CN201220636881 CN 201220636881 CN 201220636881 U CN201220636881 U CN 201220636881U CN 202976370 U CN202976370 U CN 202976370U
- Authority
- CN
- China
- Prior art keywords
- cable
- alarm
- relay
- transformer
- alarm device
- 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
Links
- 230000001932 seasonal effect Effects 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Abstract
A cable antitheft alarm device belongs to the technical field of alarms, and is used for solving the antitheft problem of cables of seasonal electrical lines. The technical scheme is that, the cable antitheft alarm device comprises a transformer, a relay and an alarm, wherein a primary-side coil of the transformer is connected with an alternating-current power supply, an output voltage of a secondary-side coil of the transformer is applied over a control coil of the relay via two core wires in a cable to be monitored, the two core wires having distal ends short circuited, and the alarm is connected with a power supply voltage by a normally-closed contact of the relay. According to the utility model, a monitoring circuit is formed by the two core wires in the cable to be monitored, and when the cable is cut by a lawless person, an alarm signal is automatically transmitted by the alarm to warn a watchstander to hit in time, protecting the cable and other facilities of the electrical lines, and thereby effectively preventing the cable from being stolen.
Description
Technical field
The utility model relates to a kind ofly can send the device of alerting signal automatically when seasonality is stolen with the cable of electric line, belong to the alarm technical field.
Background technology
At present, the stolen phenomenon of cable happens occasionally, and causing the tremendous economic loss to power department when, has also had a strong impact on people's production and life, therefore must take effective anti-theft measure.
If seasonal cable with electric line is stolen often very difficultly in time found between lay-up period, the cable of this circuit has become lawless person's main theft target.Therefore, how to solve the antitheft problem of seasonal electricity consumption line cord, be the difficult problem that the relevant technologies personnel face always.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of cable anti-theft alarm device is provided, and thoroughly solves the antitheft problem of seasonal electricity consumption line cord.
The purpose of this utility model realizes with following technical proposals:
A kind of cable anti-theft alarm device, formation comprises transformer, relay and alarm, the primary coil of described transformer connects AC power, the heart yearn of the two piece far-end short circuits of the output voltage of secondary coil in monitored cable is added on the control coil of relay, and described alarm connects supply voltage through the normally closed contact of relay.
Above-mentioned cable anti-theft alarm device, described alarm adopts hummer.
The utility model utilizes two heart yearns in monitored cable to consist of monitoring circuit; when cable was cut off by the lawless person, alarm can send alerting signal automatically, reminded the operator on duty in time to launch an attack; protection cable and other line facility, thus effectively avoided cable stolen.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is electrical schematic diagram of the present utility model.
In figure, each label is: 1, cable; T, transformer; J, relay; The normally closed contact of J-1, relay; FM, hummer.
Embodiment
Referring to Fig. 1, the utility model is comprised of transformer T, relay J and hummer FM.Transformer T output safety voltage (consider the pressure drop of circuit and cable, the output voltage of transformer T can be selected 24V-36V) therefore can not hindered stealer by electricity.The utility model utilizes the control coil of relay J to carry out power alarm, and its principle of work is as follows:
With two cable core far-end short circuits of access monitoring circuit, after switching on power, the control coil of relay J gets electric, and its normally closed contact J-1 disconnects, and alarm is not reported to the police.When monitored cable 1 is cut off by the lawless person, the control coil dead electricity of relay J, its normally closed contact J-1 is closed, and hummer FM sends alerting signal.
The little utilization factor of this plant investment is high, and is very good through the test anti-theft effect, is specially adapted to seasonal power cable with the electric unit air-drop.
Claims (2)
1. cable anti-theft alarm device, it is characterized in that, it comprises transformer (T), relay (J) and alarm, the primary coil of described transformer (T) connects AC power, the heart yearn of the two piece far-end short circuits of the output voltage of secondary coil in monitored cable (1) is added on the control coil of relay (J), and described alarm connects supply voltage through the normally closed contact (J-1) of relay.
2. cable anti-theft alarm device according to claim 1, is characterized in that, described alarm adopts hummer (FM).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636881 CN202976370U (en) | 2012-11-28 | 2012-11-28 | Cable antitheft alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636881 CN202976370U (en) | 2012-11-28 | 2012-11-28 | Cable antitheft alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202976370U true CN202976370U (en) | 2013-06-05 |
Family
ID=48517415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220636881 Expired - Fee Related CN202976370U (en) | 2012-11-28 | 2012-11-28 | Cable antitheft alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202976370U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111554060A (en) * | 2020-05-23 | 2020-08-18 | 安徽科易果网络科技有限公司 | Alarm device for preventing network cable of distribution network box from being stolen |
-
2012
- 2012-11-28 CN CN 201220636881 patent/CN202976370U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111554060A (en) * | 2020-05-23 | 2020-08-18 | 安徽科易果网络科技有限公司 | Alarm device for preventing network cable of distribution network box from being stolen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20171128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |