CN201812349U - Anti-theft device of grounding cable - Google Patents
Anti-theft device of grounding cable Download PDFInfo
- Publication number
- CN201812349U CN201812349U CN2010201403488U CN201020140348U CN201812349U CN 201812349 U CN201812349 U CN 201812349U CN 2010201403488 U CN2010201403488 U CN 2010201403488U CN 201020140348 U CN201020140348 U CN 201020140348U CN 201812349 U CN201812349 U CN 201812349U
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- Prior art keywords
- cable
- earthing cable
- detection alarm
- alarm module
- earthing
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- Expired - Fee Related
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Abstract
The utility model discloses an anti-theft device of a grounding cable, consisting of a detecting and alarming module and the grounding cable which is used as a detected object; signals of the detecting and alarming module form a loop by the grounding cable; and when the grounding cable is stolen and cut by a thief, the electric parameter or signal integrity of the loop is changed, if the change is detected, that the cable is stolen is judged, and then an alarming signal is outputted. For the anti-theft device, the structure is simple, the cost is low and the performance is reliable.
Description
Technical field
The utility model relates to a kind of electric anti-thief device, relates in particular to a kind of anti-theft device of earthing cable.
Background technology
The device of general cable theft-prevention needs protected cable charged, when cable is cut off, and cable dead electricity at this moment, protective device is reported to the police.But earthing cable is not charged generally speaking as the protection cable, so when cable was cut off, traditional device can't detection alarm.China Patent No. is 200720124407.0, name is called the utility model patent of " the antitheft detection alarm device of power circuit ", the antitheft detection alarm device of a kind of power circuit is disclosed, comprise relay J, hummer B and direct supply, it also comprises pilot lamp L, the first self-lock switch K1 and the second self-lock switch K2, the coil winding of the first self-lock switch K1 and the relay J composition loop inductance that is serially connected wherein, this loop inductance is serially connected on the AC network circuit; The second normally closed contact J of described relay J " with the described second self-lock switch K2, hummer B and the direct supply composition alarm circuit that is chained together.The weak point of the pick-up unit of general cable theft-prevention is to have only when the AC network power down, the alarm circuit conducting, it is normal the power failure or the unexpected broken string of AC network circuit appearance that the operator could investigate, and the utility model is at the characteristics of earthing cable, overcome above deficiency, be under the uncharged situation of cable, the utility model also can detect cable and steal the information of cutting and pass through the warning of the utility model warning device.
The utility model content
Technical problem to be solved in the utility model provides a kind of anti-theft device of earthing cable, and it can when cable is cut off, can detect unusually and produce alerting signal under the uncharged situation of earthing cable.
For solving technical matters of the present utility model, the utility model discloses a kind of anti-theft device of earthing cable, the anti-theft device of earthing cable described in the utility model is by comprising detection alarm modules A, detection alarm module B and earthing cable; Detection alarm modules A, detection alarm module B comprise power supply, detecting device, MCU, alarm module; Detecting device one termination MCU in the detection alarm module, an end connects earthing cable, the 3rd end ground connection, detecting device one termination MCU in the detection alarm module, one end connects earthing cable, the 3rd end ground connection, earthing cable, two detecting devices and path of the earth formation like this.
Be described further below in conjunction with accompanying drawing.
Fig. 1 is a kind of signal integrity that utilizes and judges the pick-up unit whether earthing cable is cut.Detecting device one termination MCU, an end connects earthing cable.Under normal circumstances earthing cable is complete, and whole path is intact, and detecting device A and detecting device B can receive the signal that sends each other.After earthing cable was destroyed, path disconnected, and detecting device A and detecting device B can't receive signal each other, judge that promptly earthing cable is cut, MCU sends alarm command to alarm module, the alarm module alarming horn of ringing, and report to the police to center on duty by wireless GSM communication module.
The utility model is simple in structure, and cost is low, dependable performance.
Description of drawings
Fig. 1 circuit theory diagrams of the present utility model.
Among the figure, 1, earthing cable, 2, the detection alarm modules A, 3, detection alarm module B, 4, detecting device, 5, alarm module.
Embodiment
As shown in Figure 1, the antitheft detection method of the described earthing cable of present embodiment is: meet detection alarm modules A and detection alarm module B respectively at the two ends of earthing cable, the variation of the signal that sends in addition by modules A detection module B or the integrality of signal judge whether earthing cable is destroyed.Be specially earthing cable as detected object, the signal of detection alarm module is formed a loop by earthing cable to the earth, and when the people stole cutover ground cable, at this moment the loop disconnected, and MCU judges that cable is stolen, output alarm signal.The electrical quantity that detects includes but are not limited to the integrality of voltage, electric current, signal.
The anti-theft device of earthing cable described in the utility model is made up of detection alarm module and earthing cable.
Fig. 1 is a kind of detection signal integrality of utilizing and judges the pick-up unit whether earthing cable is cut.Comprise two detection alarm modules and earthing cable, the detection alarm module comprises power supply, detecting device, MCU, alarm module; Detecting device one termination MCU, an end connects earthing cable, and under normal circumstances earthing cable is complete, and whole path is intact, receives signal integrity each other.After earthing cable was destroyed, path disconnected, and detecting device can't detect the signal that another detecting device sends, judge that promptly earthing cable is cut, MCU sends alarm command to alarm module, the alarm module alarming horn of ringing, and report to the police to center on duty by wireless GSM communication module.
Claims (1)
1. the anti-theft device of an earthing cable is characterized in that: comprise detection alarm modules A (2), detection alarm module B (3) and earthing cable (1); Detection alarm modules A (2), detection alarm module B (3) comprise power supply, detecting device (4), MCU, alarm module (5); Detecting device (4) one termination MCU in the detection alarm module (2), one end connects earthing cable, the 3rd end ground connection, detecting device (4) one termination MCU in the detection alarm module (3), one end connects earthing cable, the 3rd end ground connection, earthing cable (1), two detecting devices (4) and the earth constitute a path like this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201403488U CN201812349U (en) | 2010-03-23 | 2010-03-23 | Anti-theft device of grounding cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201403488U CN201812349U (en) | 2010-03-23 | 2010-03-23 | Anti-theft device of grounding cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201812349U true CN201812349U (en) | 2011-04-27 |
Family
ID=43895288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201403488U Expired - Fee Related CN201812349U (en) | 2010-03-23 | 2010-03-23 | Anti-theft device of grounding cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201812349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2617098A (en) * | 2022-03-29 | 2023-10-04 | Iot Solutions Group Ltd | A system for detecting unauthorised removal of material |
-
2010
- 2010-03-23 CN CN2010201403488U patent/CN201812349U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2617098A (en) * | 2022-03-29 | 2023-10-04 | Iot Solutions Group Ltd | A system for detecting unauthorised removal of material |
| GB2617098B (en) * | 2022-03-29 | 2024-09-18 | Iot Solutions Group Ltd | A system for detecting unauthorised removal of material |
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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: 20110427 Termination date: 20130323 |