CN103886700A - Phase detection-based anti-theft system - Google Patents

Phase detection-based anti-theft system Download PDF

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Publication number
CN103886700A
CN103886700A CN201210554159.9A CN201210554159A CN103886700A CN 103886700 A CN103886700 A CN 103886700A CN 201210554159 A CN201210554159 A CN 201210554159A CN 103886700 A CN103886700 A CN 103886700A
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China
Prior art keywords
unit
signal
alarm
phase
detection
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CN201210554159.9A
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Chinese (zh)
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CN103886700B (en
Inventor
谢富强
李桂龙
李世杰
熊永琴
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BYD Co Ltd
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BYD Co Ltd
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Priority to CN201210554159.9A priority Critical patent/CN103886700B/en
Priority to PCT/CN2013/089655 priority patent/WO2014094592A1/en
Publication of CN103886700A publication Critical patent/CN103886700A/en
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/1409—Mechanical actuation by lifting or attempted removal of hand-portable articles for removal detection of electrical appliances by detecting their physical disconnection from an electrical system, e.g. using a switch incorporated in the plug connector
    • G08B13/1418—Removal detected by failure in electrical connection between the appliance and a control centre, home control panel or a power supply

Abstract

Provided in the invention is a phase detection-based anti-theft system comprising a signal generation unit, a first routing unit, a second routing unit, a signal control unit, an alarm control unit, and an alarm unit. An input signal emitted by the signal generation unit is transmitted to the signal control unit by the first routing unit and the second routing unit; the signal control unit detects a phase of the received input signal, caries out calculation to obtain a phase difference and outputs a calculation result; and the alarm control unit receives the result outputted by the signal control unit and determines whether an alarm signal is sent out to the alarm unit based on the result. According to the invention, the alarm control unit will output the alarm signal under the both circumstances that the circuit is damaged and an external circuit is connected, so that the alarm unit will gives an alarm.

Description

A kind of burglary-resisting system based on phase-detection
Technical field
The invention belongs to antitheft, warning system field, relate in particular to a kind of burglary-resisting system based on phase-detection.
Background technology
Along with the development of anti-theft technique, the technology of theft is also being upgraded, so the efficient anti-theft technique of research and development new type of safe is imperative.In existing anti-theft technique, conventionally use wire rope or cable to fix protected object, reach antitheft object from mechanical angle.Or, in cable, pass into electric current, by the detection to electric current in cable, reach antitheft object.If thief cuts off the antitheft cable of equipment, current transformer can't detect the electric current in antitheft loop, and the anti-theft program that will trigger antitheft instrument is interrupted, and antitheft instrument will give the alarm, thereby plays anti-theft function.
But there is certain defect in current detecting anti-theft technique, if thief connects a new cable with certain resistance components and parts outward again at cable, form a new loop, original loop cable is cut, antitheft instrument just can not give the alarm, and loses exactly anti-theft feature again.
Therefore, just need to develop one and be no matter and destroy or when external circuits, burglary-resisting system that all can trigger alarm.
Summary of the invention
The present invention is for solving in existing burglary-resisting system; if external new circuit; even in the stolen situation of protected object; the technical matters that burglary-resisting system also can not give the alarm; a kind of new burglary-resisting system based on phase-detection is provided; to destroy in the situation of protection circuit or external circuit no matter reach, the object that burglary-resisting system all can give the alarm.
Burglary-resisting system based on phase-detection provided by the invention, comprising:
Signal generating unit, for providing input signal.
The first wiring unit, is connected with signal generating unit, the input signal providing for receiving signal generating unit, and export the first cabling signal.
The second wiring unit, is connected with signal generating unit, and the input signal providing for receiving signal generating unit changes the phase place of input signal and exports at cabling signal as second.
Signaling control unit, is connected with the first wiring unit and the second wiring unit respectively, for detection of the phase place of the first cabling signal and the second cabling signal, calculates phase differential, and exports result of calculation.
The second wiring unit and protected object combine, and in the time that protected object is stolen, the second wiring unit can be destroyed, and the phase place of the second cabling signal that signaling control unit detects is changed.
Controlling alarm unit, is connected with signaling control unit, for the result of calculation receiving and processing signals control module is exported; When the raw data that records in result of calculation and controlling alarm unit is inconsistent, trigger alarm unit gives the alarm.
Alarm unit is connected with controlling alarm unit, for giving the alarm according to the triggering of controlling alarm unit.
Preferably, the input signal that above-mentioned signal generating unit provides is sinusoidal signal.
Further, above-mentioned signaling control unit comprises phase detecting module and computing module, and phase detecting module is for detection of the phase place of the first cabling signal and the second cabling signal, and computing module is for calculating the phase differential between the first cabling signal and the second cabling signal.
Further, above-mentioned signaling control unit also comprises modular converter, and modular converter is for converting result of calculation to voltage signal or current signal.
Preferably, above-mentioned alarm unit comprises generation alarm module, for the alarm of sounding according to the triggering of controlling alarm unit; And/or luminous alarm module, for sending light signal alarm according to the triggering of controlling alarm unit.
Further, the above-mentioned burglary-resisting system based on phase-detection also comprises information display unit, and described information display unit is connected with controlling alarm unit, for the position that shows that alarm is sent.
Preferably, above-mentioned signal generating unit is a crystal oscillator.
Preferably, above-mentioned the first wiring unit is a pcb board, and described the second wiring unit is a cable.
Preferably, above-mentioned signaling control unit is a phase-detection chip.
Burglary-resisting system based on phase-detection provided by the invention, no matter the second wiring unit is cut off or external new circuit, as long as the second wiring unit disconnects or changes through the phase place of the signal of the second wiring unit, alarm unit all can give the alarm.
Brief description of the drawings
Fig. 1 is the schematic diagram of the burglary-resisting system based on phase-detection provided by the invention.
Fig. 2 is signaling control unit schematic diagram.
Fig. 3 is the burglary-resisting system schematic diagram with information display unit.
Embodiment
In order to make technical matters solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, a kind of burglary-resisting system based on phase-detection, comprising:
Signal generating unit 1, provides input signal.Above-mentioned signal generating unit 1 can be selected crystal oscillator or alternative signal generator, and input signal can be the signal of sinusoidal signal or other waveforms.What the present embodiment was chosen is to provide sinusoidal signal with crystal oscillator.
The first wiring unit 2, is connected with described signal generating unit 1, the input signal providing for receiving described signal generating unit 1, and export the first cabling signal.Above-mentioned the first wiring unit 2 is a pcb board or other cabling circuits, and what the present embodiment adopted is a pcb board.Pcb board volume is small and exquisite, is easy to riding position, and be placed in confined space, be not easy destroyed.
The second wiring unit 3, is connected with described signal generating unit 1, and the input signal providing for receiving described signal generating unit 1 changes the phase place of input signal and exports as the second cabling signal.Above-mentioned the second wiring unit 3 is chosen a cable, and while using cable, whole burglary-resisting system can arbitrarily be arranged on a lot of protected objects, as long as cable is tightly wrapped on protected object, in the time that protected object is stolen, cable must be destroyed.
Signaling control unit 4, is connected with the first wiring unit 2 and the second wiring unit 3 respectively, for detection of the phase place of the first cabling signal and the second cabling signal, calculates phase differential, and exports result of calculation.Above-mentioned signaling control unit 4 can be a phase-detection chip, and this chip has the function of input, comparison and conversion output concurrently, and what the present embodiment adopted is this structure.In addition, as shown in Figure 2, this signaling control unit 4 can also be made up of three parts, phase detecting module 41, computing module 42 and modular converter 43.Wherein, phase detecting module 41 is connected with the first wiring unit 2 and the second wiring unit 3 respectively, for detection of the first cabling signal and the second cabling signal; Computing module 42 is connected with phase detecting module 41, for calculating the phase differential between the first cabling signal and the second cabling signal that phase detecting module 41 detects; Modular converter 43 is connected with computing module 42, and the result of calculation of computing module 42 is converted to voltage signal or current signal output, and what in the present embodiment, adopt is voltage signal.
Above-mentioned the second wiring unit 3 combines with protected object, and for when protected object is stolen, the second wiring unit 3 is understood destroyed, and the phase place of the second cabling signal that signaling control unit detects is changed.In use, with the second wiring unit 3, protected object is firmly fixing, thief is if steal protected object; just must destroy the second wiring unit 3; at this moment, will change through the phase place of the second cabling signal of the second wiring unit 3, thereby warning system is reported to the police.
Controlling alarm unit 5, is connected with signaling control unit 4, for the result of calculation receiving and processing signals control module 4 is exported; When in result of calculation and controlling alarm unit 5, the raw data of record is inconsistent, trigger alarm unit 6 gives the alarm.
Above-mentioned alarm unit 6 is connected with described controlling alarm unit 5, for giving the alarm according to the triggering of controlling alarm unit 5.Above-mentioned alarm unit 6 can be one or both of sounding alarm module and luminous alarm module, above-mentioned sounding alarm module is for the alarm of sounding according to the triggering of controlling alarm unit 5, and above-mentioned luminous alarm module is for sending light signal alarm according to the triggering of controlling alarm unit 5.In the present embodiment, adopt sounding alarm module and luminous alarm module, to reach better warning effect simultaneously.
Meanwhile, as shown in Figure 3, the burglary-resisting system based on phase-detection provided by the invention, this system also comprises an information display unit 7, is connected, for showing the position of sending of alarm with controlling alarm unit 5.In the time that alarm module 6 gives the alarm, information display unit 7 also can receive the signal input of controlling alarm unit 5 simultaneously, shows the position of alarm.
While stating warning system in the use; first the second wiring unit 3 to be fixed on protected object; guarantee in the time that protected object is stolen; the second wiring unit 3 can be destroyed simultaneously; and then the phase place of the second cabling signal that signaling control unit 4 detects is changed; the phase differential calculating to change signaling control unit 4, impels controlling alarm unit 5 to control alarm unit 6 and gives the alarm.
In addition, first carry out detection and the setting of primary data.As, under normal condition, the phase differential output alarm control module 5 that the second cabling signal that signaling control unit 4 detects and the first cabling signal produce, detects this output, signal input while normal condition being set in controlling alarm unit 5, is raw data.Then by this system employs in anti-theft program, when the raw data that records under the signal input receiving when controlling alarm unit 5 and normal condition is inconsistent, illustrate that protected object has stolen possibility.So, alarm unit 6 below will give the alarm, and, if there is information display unit, will directly show the position of stolen object.
Above-mentioned burglary-resisting system can be used on a lot of occasions and object; as long as the second wiring unit 3 and protected object are combined, while ensureing that protected object is stolen, the second wiring unit 3 can be destroyed; and then the phase place of change signal, realize final alarm unit 6 and give the alarm.
In the present embodiment, adopt crystal oscillator to send 30MHz, peak-to-peak value is the sine wave of 1V, this sine wave imports phase-detection chip (AD8302) into through a pcb board, import phase-detection chip (AD8302) into through a cable simultaneously, in the time of some samples of actual track length of pcb board and cable, the output voltage of AD8302 is 1.8V.In the time that the line length of cable is 1m, because the sine wave of 30MHz can produce phase delay after cable, the output voltage of AD8302 is 1V.If change like this length 1cm of cable, the output voltage of AD8302 just changes 0.01V.After product installs, this voltage of system automatic Verification, if voltage changes, just thinks to have people by cable line short circuit, system alarm, notice background server.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.

Claims (9)

1. the burglary-resisting system based on phase-detection, is characterized in that, comprising:
Signal generating unit, provides input signal;
The first wiring unit, is connected with described signal generating unit, the input signal providing for receiving described signal generating unit, and export the first cabling signal;
The second wiring unit, is connected with described signal generating unit, and the input signal providing for receiving described signal generating unit changes the phase place of input signal and exports as the second cabling signal;
Signaling control unit, is connected with the first wiring unit and the second wiring unit respectively, for detection of the phase place of the first cabling signal and the second cabling signal, calculates phase differential, and exports result of calculation;
Described the second wiring unit and protected object combine, and in the time that protected object is stolen, described the second wiring unit can be destroyed, and the phase place of the second cabling signal that signaling control unit detects is changed;
Controlling alarm unit, is connected with signaling control unit, for the result of calculation receiving and processing signals control module is exported; When the raw data that records in described result of calculation and controlling alarm unit is inconsistent, trigger alarm unit gives the alarm;
Described alarm unit is connected with described controlling alarm unit, for giving the alarm according to the triggering of described controlling alarm unit.
2. the burglary-resisting system based on phase-detection as claimed in claim 1, is characterized in that, the input signal that described signal generating unit provides is sinusoidal signal.
3. the burglary-resisting system based on phase-detection as claimed in claim 1, it is characterized in that, described signaling control unit comprises phase detecting module and computing module, described phase detecting module is for detection of the phase place of the first cabling signal and the second cabling signal, and described computing module is for calculating the phase differential between the first cabling signal and the second cabling signal.
4. the burglary-resisting system based on phase-detection as claimed in claim 3, is characterized in that, described signaling control unit also comprises modular converter, and described modular converter is for converting result of calculation to voltage signal or current signal.
5. the burglary-resisting system based on phase-detection as claimed in claim 1, is characterized in that,
Described alarm unit comprises sounding alarm module, for the alarm of sounding according to the triggering of described controlling alarm unit;
And/or luminous alarm module, for sending light signal alarm according to the triggering of described controlling alarm unit.
6. the burglary-resisting system based on phase-detection as claimed in claim 1, is characterized in that, also comprises: information display unit, is connected with described controlling alarm unit, for showing that alarm sends position.
7. the burglary-resisting system based on phase-detection as shown in claim 1, is characterized in that, described signal generating unit is a crystal oscillator.
8. the burglary-resisting system based on phase-detection as claimed in claim 1, is characterized in that, described the first wiring unit is a pcb board, and described the second wiring unit is a cable.
9. the burglary-resisting system based on phase-detection as claimed in claim 1, is characterized in that, described signaling control unit is a phase-detection chip.
CN201210554159.9A 2012-12-19 2012-12-19 Phase detection-based anti-theft system Active CN103886700B (en)

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Application Number Priority Date Filing Date Title
CN201210554159.9A CN103886700B (en) 2012-12-19 2012-12-19 Phase detection-based anti-theft system
PCT/CN2013/089655 WO2014094592A1 (en) 2012-12-19 2013-12-17 Alarming system and method for alarming

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Application Number Priority Date Filing Date Title
CN201210554159.9A CN103886700B (en) 2012-12-19 2012-12-19 Phase detection-based anti-theft system

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CN103886700B CN103886700B (en) 2017-02-01

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104332009B (en) * 2014-11-25 2017-01-25 山东屹歌智能科技有限公司 Burglar alarm device and burglar alarm monitoring method of transformer

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CN86205962U (en) * 1986-08-25 1987-12-16 潘之凯 Theft alarm attached articles
CN2100628U (en) * 1991-08-14 1992-04-01 秦传勇 False wiring protective device for watt-hour meters
JP2008065439A (en) * 2006-09-05 2008-03-21 Fuji Denki Kogyo Kk Anti-theft device
CN201278182Y (en) * 2008-06-16 2009-07-22 臧志健 Electromagnetic bidirectional intermodulation intelligent anti-theft apparatus
EP2357625A1 (en) * 2010-02-17 2011-08-17 Honeywell International Inc. Microwave curtain sensor
CN202523164U (en) * 2012-05-07 2012-11-07 李程芝 Anti-theft monitor for power transmission and transformation equipment

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CN2056136U (en) * 1989-10-19 1990-04-18 朱华锷 Multi-azimuth burglar alarm for vehicle
CN100353172C (en) * 2002-09-17 2007-12-05 联发科技股份有限公司 Group delay test method and device thereof
US8199012B2 (en) * 2009-02-12 2012-06-12 Honeywell International Inc. Microwave curtain sensor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86205962U (en) * 1986-08-25 1987-12-16 潘之凯 Theft alarm attached articles
CN2100628U (en) * 1991-08-14 1992-04-01 秦传勇 False wiring protective device for watt-hour meters
JP2008065439A (en) * 2006-09-05 2008-03-21 Fuji Denki Kogyo Kk Anti-theft device
CN201278182Y (en) * 2008-06-16 2009-07-22 臧志健 Electromagnetic bidirectional intermodulation intelligent anti-theft apparatus
EP2357625A1 (en) * 2010-02-17 2011-08-17 Honeywell International Inc. Microwave curtain sensor
CN202523164U (en) * 2012-05-07 2012-11-07 李程芝 Anti-theft monitor for power transmission and transformation equipment

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