CN201698538U - Cable burglar alarm - Google Patents
Cable burglar alarm Download PDFInfo
- Publication number
- CN201698538U CN201698538U CN2010202046191U CN201020204619U CN201698538U CN 201698538 U CN201698538 U CN 201698538U CN 2010202046191 U CN2010202046191 U CN 2010202046191U CN 201020204619 U CN201020204619 U CN 201020204619U CN 201698538 U CN201698538 U CN 201698538U
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- CN
- China
- Prior art keywords
- contact
- loudspeaker
- cable
- pair
- water sensor
- 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 - Lifetime
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Abstract
The utility model relates to a cable burglar alarm, which comprises a water logging sensor, wherein when a contact and/or a contact are/is disconnected, a pair of normally-closed contacts are disconnected, and the contacts of the water logging sensor are respectively connected with a pair of jumper wires taken out of two voice-frequency cables; the pair of normally-closed contacts of the water logging sensor are connected with a loudspeaker Y in parallel; the anode of a 5V of DC power supply is connected with a 10 ohms of resistance R in series and then is connected at one end of the loudspeaker Y; and the cathode of the 5V of DC power supply is connected with the other end of the loudspeaker Y. When a cable is stolen and cut off, the loudspeaker sends out alarm sound. The cable burglar alarm has the characteristics of simple and practical structure and high reliability.
Description
Technical field
The utility model relates to the electrical type burglar alarm, sends the alarm of chimes of doom when being cut off out especially for voice-frequency cable.
Background technology
Lao Xiong well centralized control center is the transformer station nearest apart from Panzhihua Power Bureau.It is the signal centre of Panzhihua Power Bureau.Except optical fiber, also have two voice-frequency cables to be connected between Lao Xiong well transformer station and the power administration's communications equipment room, because these two voice-frequency cables are to lay in built on stilts mode.Steal cable so just for some lawless person and brought opportunity.Since the second half year in 2008, continuous three times the lawless person has broken apart by chopping this two voice-frequency cables and stealing smoothly on the mountain behind the Lao Xiong well.The wildness of its behavior, the aggressiveness of bluster are to the stage that can not be added with.If communications facility is destroyed for a long time, tend to cause a series of chain reactions such as electric power supply interruption, not only cause serious economy loss to electric power enterprise, destroyed for the electricity consumption order, main is that power network safety operation is caused fatal threat.
The utility model content
The purpose of this utility model provides a kind of anti-theft alarm for cable, and the one, cable is lancinated, the warning of promptly sounding.
This novel purpose is achieved in that a kind of anti-theft alarm for cable, comprise water sensor: when contact and/or contact disconnect, a pair of normally closed contact disconnects simultaneously, and the contact of water sensor is connected respectively at a pair of wire jumper that takes out from two voice-frequency cables with the contact; The a pair of normally closed contact of water sensor is in parallel with loudspeaker Y, and the 5V dc power anode is connected to loudspeaker Y one end after being connected in series the resistance R that resistance is 10 Europe, and the 5V dc power cathode is connected to the loudspeaker Y other end.
Also be connected with gauge tap K between the line of above-mentioned resistance R and loudspeaker Y.
This is novel be utilize waste and old water sensor (Yada Electronics Co., Ltd., Heyuan produces, and can buy, or pass through network address:
Http:// www.hyyada.com/productInfo.asp? id=146Purchase) break-make principle is made.
This novel beneficial effect is:
1, this anti-theft alarm for cable only need just can be monitored external cable through simple setting, as long as cable is cut, this equipment can send sound and light alarm immediately, for the automatic protection of cable provides conscientiously, effective method.As the responding of ensuring public security is timely, the lawless person can also be arrested on electric pole.
2, simple, the low cost of manufacture of this new structure, through facts have proved, this alarm has the reliability height, the advantage such as timely of reporting to the police, and is applied in the reality, will be for ensureing that power network safety operation contribute.
Description of drawings
Fig. 1 is this novel circuit diagram (cable just often);
Fig. 2 is a cable shown in Figure 1 circuit diagram when disconnecting.
Embodiment
Fig. 1, Fig. 2 illustrate, this novel water sensor 5 that comprises: when contact 1 and/or contact 2 disconnected, a pair of normally closed contact 3,4 disconnected simultaneously, and the contact 1 of water sensor 5 is connected with a pair of wire jumper that takes out from two voice-frequency cables respectively with contact 2; The a pair of normally closed contact 3,4 of water sensor is all in parallel with loudspeaker Y, and the 5V dc power anode is connected to loudspeaker Y one end after being connected in series the resistance R that resistance is 10 Europe, and the 5V dc power cathode is connected to the loudspeaker Y other end.Also be connected with gauge tap K between the line of resistance R and loudspeaker Y.In use, gauge tap K is in closure state.
During making, from voice-frequency cable, get a pair of wire jumper 6,7, and the two is connected to the contact 1 and the contact 2 of water sensor 5 respectively.When cable just often, the contact 3 of water sensor and contact 4 short circuits, electric current forms the loop through the direction shown in Fig. 1 arrow, because without the loop at doorbell place, so doorbell does not ring.
Referring to Fig. 2, when cable was broken apart by chopping, the contact 1 of cable and sensor or contact 2 disconnected, and perhaps, cable and contact 1 and contact 2 all disconnect, and contact 3 disconnects with contact 4, and electric current forms the loop through the direction shown in Fig. 2 arrow.Because electric current has passed through loudspeaker and has triggered the loudspeaker action, thereby sends chimes of doom.This burglar alarm can also be applied to family, automobile, safety cabinet, warehouse etc. except being applied to cable theft-prevention.Certainly this need increase a door status switch.
This burglar alarm only needs two d-c transformers that are respectively 12V (working power of water sensor) and 5V, doorbell and switch and a resistance that is approximately about 10 Europe.These material costs are not high, and bought easily.Water sensor removes from waste and old equipment.
In addition, water sensor can adopt relay (JT3 type DC relay) to substitute, and a pair of wire jumper that is about to voice-frequency cable is controlled with a relay J circuit respectively; Can adopt also that " (Li Zhongshi writes the selected handbook of domestic electronic alarm, scientific and technical literature publishing house publishes, September in 1993 the 1st edition) " the simple damage preventing alarm device " among the P117 substitutes: alarming line is in a single day destroyed, triode BG1 ends, feedback signal is added to another triode BG2 base stage, drives warning circuit shown in Figure 1 again and sends chimes of doom.
Claims (2)
1. anti-theft alarm for cable, comprise, water sensor (5): when contact (1) and/or contact (2) disconnects, a pair of normally closed contact (3,4) disconnects simultaneously, it is characterized in that: the contact (1) of described water sensor (5) is connected with a pair of wire jumper that takes out from two voice-frequency cables respectively with contact (2); The a pair of normally closed contact of water sensor (3,4) is all in parallel with loudspeaker Y, and the 5V dc power anode is connected to loudspeaker Y one end after being connected in series the resistance R that resistance is 10 Europe, and the 5V dc power cathode is connected to the loudspeaker Y other end.
2. according to the described anti-theft alarm for cable of claim 1, it is characterized in that: also be connected with gauge tap K between the line of described resistance R and loudspeaker Y.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202046191U CN201698538U (en) | 2010-05-26 | 2010-05-26 | Cable burglar alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202046191U CN201698538U (en) | 2010-05-26 | 2010-05-26 | Cable burglar alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201698538U true CN201698538U (en) | 2011-01-05 |
Family
ID=43399784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202046191U Expired - Lifetime CN201698538U (en) | 2010-05-26 | 2010-05-26 | Cable burglar alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201698538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866522A (en) * | 2010-05-26 | 2010-10-20 | 攀枝花电业局 | Anti-theft alarm for cable |
-
2010
- 2010-05-26 CN CN2010202046191U patent/CN201698538U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101866522A (en) * | 2010-05-26 | 2010-10-20 | 攀枝花电业局 | Anti-theft alarm for cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110105 |