CN201540616U - Anti-theft alarm wireless monitoring system of cable - Google Patents
Anti-theft alarm wireless monitoring system of cable Download PDFInfo
- Publication number
- CN201540616U CN201540616U CN2009200126593U CN200920012659U CN201540616U CN 201540616 U CN201540616 U CN 201540616U CN 2009200126593 U CN2009200126593 U CN 2009200126593U CN 200920012659 U CN200920012659 U CN 200920012659U CN 201540616 U CN201540616 U CN 201540616U
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- cable
- circuit
- monitoring system
- wireless monitoring
- power supply
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Abstract
The utility model provides an anti-theft alarm wireless monitoring system of a cable; the starting end of the cable is provided with a 24V direct-current power supply signal generator which is connected with the cable by a relay and a protecting circuit II; and 220V alternating current is connected with a coil end of the relay; the tail end of the cable is respectively connected with a power supply circuit and a protecting circuit I which is respectively connected with a 1.5V comparison circuit and a 2.5V comparison circuit through an optocoupler transmission circuit; signals output by the 1.5V comparison circuit and the 2.5V comparison circuit are respectively processed by a CPU and then are sent to an upper computer of a monitoring center; and the upper computer of the monitoring center is provided with an alarm device. The anti-theft alarm wireless monitoring system can master the cable condition at any time, send out alarms in time, and stop the steal action. The anti-theft alarm wireless monitoring system consists of a monitoring center and detecting equipment installed on a field. The field detecting equipment sends an alarm short message to the upper computer of the monitoring center after detecting the fault cables or broken cables; and after analysis, the upper computer transmits the alarming content to office workers in a monitoring room by characters and voices for alarming.
Description
Technical field:
Whether stolen the utility model relate to a kind of street lamp or other service cables supervisory system that is mainly used in.
Background technology:
At present, rare along with the copper resource, the copper valency rises steadily, and the phenomenon that some lawless persons steal cable occurred.Usually arrived on-the-spot the tour in order to prevent and treat this phenomenon people in the past, or increased some protective devices, strengthened the damage resistance of cable, and not only wasted lot of manpower and material resources, and fundamentally do not solved the pilferage problem.
Summary of the invention:
The utility model provides a kind of and can control the cable situation at any time at the above-mentioned deficiency of prior art, in time gives the alarm, and stops the cable burglar alarm wireless monitoring system of pilferage behavior.
Technical solution of the present utility model is: a kind of cable burglar alarm wireless monitoring system, be provided with 24V dc power signal generator at the top of cable, it is connected with cable by relay and holding circuit II successively, and the 220V alternating current is connected with the relay coil end; The end of cable is connected with feed circuit and holding circuit I respectively; the holding circuit I is connected with 1.5V comparator circuit and 2.5V comparator circuit respectively through the optocoupler transmission circuit; 1.5V the signal of comparator circuit and the output of 2.5V comparator circuit is handled the back through CPU and is sent to Surveillance center's host computer by radio communication unit, Surveillance center's host computer is provided with warning device.Described radio communication unit can be GSM short message communication unit.
Described holding circuit I is provided with frequency inductance L1, optocoupler transmission circuit input end A1, the resistance R 3 of series connection, wherein the series circuit of optocoupler transmission circuit input end A1, resistance R 3 respectively with two the forward diode D2 that connect, D4 and backward dioded D1 parallel connection.
Described holding circuit II is provided with resistance R 7, its with the parallel connection of 24V dc power signal generator after the frequency inductance L2 that connects, be connected on cable live wire L and the zero line N.
Described feed circuit are provided with 15V Switching Power Supply U2 and transformer U3, and the 5V of transformer U3 output gives CPU and 1.5V, 2.5V comparator circuit and the power supply of optocoupler transmission circuit; 15V Switching Power Supply U2 charges the battery, and is other circuit supplies simultaneously.
The utility model is by Surveillance center and be installed to on-the-spot checkout equipment and form.On-the-spot checkout equipment detects that the host computer to Surveillance center sends the alarming short message breath behind cable fault or the cable break, and host computer is reported to the police by literal and voice alarm content after resolving to the Control Room clerical workforce.The cable initiating terminal is installed signal generator, and signal generator is not when cable supplies the 220V alternating current, to cable output 24V dc signal; When cable begins to power, the signal generator direct current signal that can automatically switch, the guard signal generator is not subjected to the 220V affected by high simultaneously.Cable end piece is installed the cable status detection system, and the cable status detection system mainly is made up of detecting unit and GSM communication unit and feed circuit.
Native system should detect low-voltage DC, detects High Level AC Voltage again, and will guarantee that the low-voltage circuit of detection system is not damaged.So at the input end serial connection frequency inductance of detecting unit, frequency inductance requires withstand voltage 250V, about 800 ohm of internal resistances like this for forceful electric power 220V, are equivalent to be connected in series a high-impedance resistors; For low-voltage DC, be equivalent to be connected in series 800 ohm Low ESR resistance, protected back-end circuit.L1 is a frequency inductance, and DC voltage is carried between cable live wire L and the zero line N, constitutes the loop by L1, optocoupler A1 input end, R3, as long as DC voltage is arranged, just has 1,2 pin of several milliamperes of electric currents by A1, and optocoupler output will form voltage on R4.During cable power supply, be the 220V alternating voltage between L, the N, constitute the loop at positive half cycle by L1, optocoupler A1 input end, R3, negative half period constitutes the loop by L1, D1, and the whole cycle of alternating current is all passed through the L1 inductance, has guaranteed that inductance can heating burnout.Exchange positive half cycle and can produce several milliamperes of electric currents in its loop, optocoupler output forms voltage on R4 like this, but negative half period because of the loop without A1, so again R4 go up and form voltage.Voltage on the R4 is delivered to cpu port again after through the comparator circuit of rear end and is detected, and sets the alarm threshold value by comparator circuit.CPU can judge cable status by the signal of port input.
The signal generator that cable top is installed equally also needs perfectly straight flow resistance exchange way to protect.Relay DC24V+ and DC24V-are received in the output of signal generator, are connected on cable live wire and the zero line by frequency inductance L2.When cable power supply, L2, R7 form the loop, on R7, only can produce very little pressure drop, can not cause signal generator to damage, simultaneously, the alternating voltage of cable also is added to 220V relay coil end, and relay can cut off the direct current signal of signal generator, guarantees that so more signal generator can not damage.
Description of drawings:
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is the physical circuit figure that is connected with cable top of the present utility model.
Fig. 3 is the physical circuit figure that is connected with cable end piece of the present utility model.
Embodiment:
Further specify specific embodiment of the utility model below in conjunction with accompanying drawing:
Shown in Fig. 1～3: a kind of cable burglar alarm wireless monitoring system, be provided with 24V dc power signal generator at the top of cable, it is connected with cable by relay and holding circuit II successively, and the 220V alternating current is connected with the relay coil end; The end of cable is connected with feed circuit and holding circuit I respectively; the holding circuit I is connected with 1.5V comparator circuit and 2.5V comparator circuit respectively through the optocoupler transmission circuit; 1.5V the signal of comparator circuit and the output of 2.5V comparator circuit is handled the back through CPU and is sent to Surveillance center's host computer by GSM short message communication unit, Surveillance center's host computer is provided with literal and phonetic alarm device.Described holding circuit I is provided with frequency inductance L1, optocoupler transmission circuit input end A1, the resistance R 3 of series connection, wherein the series circuit of optocoupler transmission circuit input end A1, resistance R 3 respectively with two the forward diode D2 that connect, D4 and backward dioded D1 parallel connection.Described holding circuit II is provided with resistance R 7, its with the parallel connection of 24V dc power signal generator after the frequency inductance L2 that connects, be connected on cable live wire L and the zero line N.Described feed circuit are provided with 15V Switching Power Supply U2 and transformer U3, and the 5V of transformer U3 output gives CPU and 1.5V, 2.5V comparator circuit and the power supply of optocoupler transmission circuit; 15V Switching Power Supply U2 charges the battery, and is other circuit supplies simultaneously.
The course of work is as follows:
When cable does not supply the 220V alternating current, detection system is battery-powered, main flow electric signal on the detecting unit detection streamer of detection system, if detect dc signal greater than 2.5V, thinking that cable status is normal, why select 2.5V voltage, is to consider that the on-site cable actual conditions are varied, the electric shock loose contact, dielectric strength is bad or the like all can make signal seriously be decayed. " to Surveillance center, the host computer of Surveillance center can be reported to the police out by " cable fault ", reminds the maintainer to check cable. " to Surveillance center, the host computer of Surveillance center can be reported to the police out " cable break ", reminds the maintainer to be on the scene at once. ", point out out " cable reply normal " to host computer at host computer.
When cable begins power supply (220V alternating current), the signal generator at cable top cuts away DC voltage, the detecting unit of cable end piece detection system begins to detect alternating voltage, if alternating voltage is arranged, think that cable is normal, if detect less than alternating voltage, think that cable breaks, confirm that repeatedly the back sends short message " cable broken! by communication unit " to Surveillance center, the host computer of Surveillance center can be reported to the police out " cable break ", reminds the maintainer to be on the scene at once. ", point out out " cable reply normal " to host computer at host computer.At cable power supply simultaneously, can charge to supplying cell, be to have battery to power to cable detection system when cable was not powered in second day.
Claims (4)
1. cable burglar alarm wireless monitoring system, it is characterized in that: be provided with 24V dc power signal generator at the top of cable, it is connected with cable by relay and holding circuit II successively, and the 220V alternating current is connected with the relay coil end; The end of cable is connected with feed circuit and holding circuit I respectively; the holding circuit I is connected with 1.5V comparator circuit and 2.5V comparator circuit respectively through the optocoupler transmission circuit; 1.5V the signal of comparator circuit and the output of 2.5V comparator circuit is handled the back through CPU and is sent to Surveillance center's host computer by radio communication unit, Surveillance center's host computer is provided with warning device.
2. cable burglar alarm wireless monitoring system according to claim 1; it is characterized in that: described holding circuit I is provided with frequency inductance (L1), optocoupler transmission circuit input end (A1), the resistance (R3) of series connection, wherein the series circuit of optocoupler transmission circuit input end (A1), resistance (R3) respectively with two forward diode of connecting (D2, D4) and a backward dioded (D1) parallel connection.
3. cable burglar alarm wireless monitoring system according to claim 2; it is characterized in that: described holding circuit II is provided with resistance (R7); its with the parallel connection of 24V dc power signal generator after the frequency inductance (L2) of connecting, be connected on cable live wire (L) and the zero line (N).
4. cable burglar alarm wireless monitoring system according to claim 3, it is characterized in that: described feed circuit are provided with 15V Switching Power Supply (U2) and transformer (U3), and the 5V of transformer (U3) output gives CPU and 1.5V, 2.5V comparator circuit and the power supply of optocoupler transmission circuit; 15V Switching Power Supply (U2) charges the battery, and is other circuit supplies simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200126593U CN201540616U (en) | 2009-04-01 | 2009-04-01 | Anti-theft alarm wireless monitoring system of cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200126593U CN201540616U (en) | 2009-04-01 | 2009-04-01 | Anti-theft alarm wireless monitoring system of cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201540616U true CN201540616U (en) | 2010-08-04 |
Family
ID=42592074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200126593U Expired - Lifetime CN201540616U (en) | 2009-04-01 | 2009-04-01 | Anti-theft alarm wireless monitoring system of cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201540616U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853558B (en) * | 2009-04-01 | 2011-12-21 | 大连现代高技术发展有限公司 | Cable burglar alarm wireless monitoring system |
| CN107545709A (en) * | 2016-06-29 | 2018-01-05 | 上海宝钢化工有限公司 | A kind of more spelling cable break alarm devices |
-
2009
- 2009-04-01 CN CN2009200126593U patent/CN201540616U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853558B (en) * | 2009-04-01 | 2011-12-21 | 大连现代高技术发展有限公司 | Cable burglar alarm wireless monitoring system |
| CN107545709A (en) * | 2016-06-29 | 2018-01-05 | 上海宝钢化工有限公司 | A kind of more spelling cable break alarm devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100804 Effective date of abandoning: 20090401 |