CN103093566A - Article anti-thief alarm device based on magnetic testing - Google Patents
Article anti-thief alarm device based on magnetic testing Download PDFInfo
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- CN103093566A CN103093566A CN2013100057984A CN201310005798A CN103093566A CN 103093566 A CN103093566 A CN 103093566A CN 2013100057984 A CN2013100057984 A CN 2013100057984A CN 201310005798 A CN201310005798 A CN 201310005798A CN 103093566 A CN103093566 A CN 103093566A
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Abstract
The invention relates to an article anti-thief alarm device based on magnetic testing, and belongs to the field of security and protection. The article anti-thief alarm device comprises a permanent magnet, a magnetic detecting module, a wireless receiving module and an alarm, wherein the magnetic detecting module comprises a three-shaft magnetic sensor, a signal processing circuit, a singlechip processor, a wireless transmitting module and a power module; the wireless receiving module comprises a wireless receiving unit and an alarm drive circuit. The article anti-thief alarm device based on the magnetic testing is designed by basing on the present rising magnetic sensing technology and wireless internet of things technology and has the advantages of being accurate and reliable, convenient to install, good in concealment, capable of controlling one defending area independently, organizing a defense and withdrawing the defense, not prone to be cracked and the like, and the article anti-thief alarm device based on the magnetic testing has a wide market prospect.
Description
Technical field
The present invention relates to a kind of theft alarm attached articles that detects based on magnetic, belong to safety-security area.
Background technology
Before the social security situation not yet thoroughly took a turn for the better, the valuables larceny case happened occasionally.In this case, installation becomes a kind of inevitable choice once relatively complete, the disguised strong burglar alarm of cover function.
The burglar alarm that comparatively generally uses at present mainly contains pressure activated formula burglar alarm, switch electronic burglar alarm, infrared anti-theft alarm etc., and this several frequently seen type of alarm has certain defective, is easily cracked by the offender.
Summary of the invention
The invention provides a kind of theft alarm attached articles that detects based on magnetic; described device is installed permanent magnet on item to be protected; the field signal that collects by the magnetic detection module changes to judge whether article are stolen, for the anti-theft protection of valuables provides a kind of method accurately and reliably.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of theft alarm attached articles that detects based on magnetic, described device comprises permanent magnet, magnetic detection module, wireless receiving module, alarm; Wherein, the magnetic detection module comprises magnetic sensor, signal conditioning circuit, processor of single chip computer, wireless transmitter module, power module; Wireless receiving module comprises radio receiving unit and warning driving circuit.
Wherein, permanent magnet is arranged on item to be protected; Power module is connected with magnetic sensor, signal conditioning circuit, processor of single chip computer, wireless transmitter module respectively; Magnetic sensor, signal conditioning circuit, processor of single chip computer, wireless transmitter module are linked in sequence successively; Radio receiving unit, warning driving circuit and alarm are linked in sequence successively; Carry out data communication by wireless transmission between wireless transmitter module and radio receiving unit.
Wherein, acting as of power module is magnetic sensor, signal conditioning circuit, processor of single chip computer, wireless transmitter module power supply;
Acting as of permanent magnet produces the stationary magnetic field around item to be protected;
Acting as of magnetic sensor, whether the magnetic field around the detection item to be protected changes, and the magnetic field value that detects is sent to signal conditioning circuit;
Acting as of signal conditioning circuit, the magnetic field amount that magnetic sensor is detected converts electric signal to, sends processor of single chip computer to after signal condition and AD collection;
Acting as of processor of single chip computer by the electric signal that signal conditioning circuit is inputted, calculates initial magnetic field and each space magnetic field constantly of item to be protected, and process information sent to wireless transmitter module;
Acting as of wireless transmitter module is converted into wireless signal with the single-chip microcomputer process information and sends to radio receiving unit;
Acting as of radio receiving unit is converted to electric signal with the transmitted signal of wireless transmitter module, further drives alarm equipment alarm by the warning driving circuit.
Preferred described magnetic sensor comprises x axle magnetic detection chip, y axle magnetic detection chip and z axle magnetic detection chip, the chip of three Magnetic Sensors of the same race is carried out quadrature along axis direction install, and the space vector that carries out magnetic field detects; X, y, z axle magnetic detection chip gather respectively in the space along the magnetic field on x, y, z direction of principal axis, and Magnetic Sensor can be selected AMR, GMR or Hall magnetic sensor.
Wherein, permanent magnet can be installed respectively on a plurality of article, and for the magnetic detection module of each article design with its outfit, can carry out regional MANET between different magnetic detection modules and wireless receiving module.
A kind of article anti-theft alarm method that detects based on magnetic, described method concrete steps are as follows:
Step 2, detect magnetic field around item to be protected by magnetic sensor, after the magnetic field amount that detects is carried out signal condition by signal conditioning circuit, gather through AD, send into processor of single chip computer;
Step 3, calculate the current space magnetic field of item to be protected by processor of single chip computer, and compare with reference value; Carry out the situation judgement according to comparison result:
If the current space magnetic field of item to be protected does not change, return to step 2;
If the current space magnetic field of item to be protected changes, judge that article are stolen, connect step 4;
Step 4, processor of single chip computer transmit stolen signal to wireless transmitter module, and send to wireless receiving module by wireless transmitter module; After wireless receiving module is received signal, drive alarm equipment alarm by the warning driving circuit.
Beneficial effect
Compare burglar alarm commonly used at present, burglar alarm based on Magnetic Sensor provided by the invention is based on magnetic sensing technology and the wireless technology of Internet of things of current rise, have accurately and reliably, easy for installation, disguised strong, can control separately a certain defence area, the characteristics such as can deploy troops on garrison duty and withdraw a garrison, be difficult for cracking, this burglar alarm has boundless market outlook.
Description of drawings
Fig. 1 is the composition module map of burglar alarm of the present invention.
Embodiment
Below by embodiment, the present invention is described in more detail.
Embodiment
The theft alarm attached articles based on the magnetic detection as shown in Figure 1, described device comprises permanent magnet, magnetic detection module, wireless receiving module, alarm; Wherein, the magnetic detection module comprises magnetic sensor, signal conditioning circuit, processor of single chip computer, wireless transmitter module, power module; Wireless receiving module comprises radio receiving unit and warning driving circuit.
Wherein, permanent magnet is arranged on item to be protected; Power module is connected with magnetic sensor, signal conditioning circuit, processor of single chip computer, wireless transmitter module respectively; Magnetic sensor, signal conditioning circuit, processor of single chip computer, wireless transmitter module are linked in sequence successively; Radio receiving unit, warning driving circuit and alarm are linked in sequence successively; Carry out data communication by wireless transmission between wireless transmitter module and radio receiving unit.
Wherein, acting as of power module is magnetic sensor, signal conditioning circuit, processor of single chip computer, wireless transmitter module power supply; Described power module can be selected dry cell or lithium battery.
Acting as of permanent magnet produces the stationary magnetic field around item to be protected;
Acting as of magnetic sensor, whether the magnetic field around the detection item to be protected changes, and the magnetic field value that detects is sent to signal conditioning circuit;
Acting as of signal conditioning circuit, the magnetic field amount that magnetic sensor is detected converts electric signal to, sends processor of single chip computer to after signal condition and AD collection;
Acting as of processor of single chip computer by the electric signal that signal conditioning circuit is inputted, calculates initial magnetic field and each space magnetic field constantly of item to be protected, and process information sent to wireless transmitter module;
Acting as of wireless transmitter module is converted into wireless signal with the single-chip microcomputer process information and sends to radio receiving unit; Wireless transmitter module transmits and has the ability that penetrates magnetic detection module housing and certain thickness coverture.
Acting as of radio receiving unit is converted to electric signal with the transmitted signal of wireless transmitter module, further drives alarm equipment alarm by the warning driving circuit.Described wireless receiving module by the cable power power supply, is arranged on the metope apart from magnetic detection module certain distance, and in effective range of receiving, each radio receiving unit can receive a plurality of magnetic detection module data (at least 16).Wireless receiving module can pass through the magnetic detection module data in the receiving area wired (RS485, RS232 or Ethernet etc.) and wireless way for transmitting to third party control system, realization scene or remote alarms.
Wherein, described magnetic sensor comprises x axle magnetic detection chip, y axle magnetic detection chip and z axle magnetic detection chip, the chip of three Magnetic Sensors of the same race is carried out quadrature along axis direction install, and the space vector that carries out magnetic field detects; X, y, z axle magnetic detection chip gather respectively in the space along the magnetic field on x, y, z direction of principal axis, and Magnetic Sensor can be selected AMR, GMR or Hall magnetic sensor.
Wherein, the GMR chip that described Magnetic Sensor selects east little magnetic company to produce, model is SAS012;
Processor of single chip computer is American TI Company production, and model is MSP430F1611;
The JN5148 chip that wireless transmitter module and wireless receiving module all adopt NXP company to produce;
Permanent magnet can be installed respectively on a plurality of article, and for the magnetic detection module of each article design with its outfit, can carry out regional MANET between different magnetic detection modules and wireless receiving module.The magnetic detection module can be arranged on ground or underground, have anti-roll, prevent dust, waterproof and the wireless function that penetrates; Magnetic detection module in the same area can be numbered.
The mounting means of described burglar alarm is as follows:
1. the permanent magnet of certain size is installed on item to be protected;
2. the magnetic detection module is arranged on the ground apart from the item to be protected certain distance, underground or ground, and the magnetic detection module is numbered;
3. wireless receiving module is arranged on the metope apart from magnetic detection module certain distance, a wireless receiving module can correspondingly receive the warning message that a plurality of (at least 16) magnetic detection module is sent;
4. the magnetic detection module adopts the power module power supply, and wireless receiving module and alarm adopt wired power supply.
A kind of article anti-theft alarm method that detects based on magnetic, described method concrete steps are as follows:
Step 2, detect magnetic field around item to be protected by magnetic sensor, after the magnetic field amount that detects is carried out signal condition by signal conditioning circuit, gather through AD, send into processor of single chip computer;
Step 3, calculate the current space magnetic field of item to be protected by processor of single chip computer, and compare with reference value; Carry out the situation judgement according to comparison result:
If the current space magnetic field of item to be protected does not change, return to step 2;
If the current space magnetic field of item to be protected changes, judge that article are stolen, connect step 4;
Step 4, processor of single chip computer transmit stolen signal to wireless transmitter module, and send to wireless receiving module by wireless transmitter module; After wireless receiving module is received signal, drive alarm equipment alarm by the warning driving circuit.
In sum, these are only preferred embodiment of the present invention, is not for limiting protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. theft alarm attached articles that detects based on magnetic, it is characterized in that: described device comprises permanent magnet, magnetic detection module, wireless receiving module, alarm; Wherein, the magnetic detection module comprises magnetic sensor, signal conditioning circuit, processor of single chip computer, wireless transmitter module, power module; Wireless receiving module comprises radio receiving unit and warning driving circuit;
Wherein, permanent magnet is arranged on item to be protected; Power module is connected with magnetic sensor, signal conditioning circuit, processor of single chip computer, wireless transmitter module respectively; Magnetic sensor, signal conditioning circuit, processor of single chip computer, wireless transmitter module are linked in sequence successively; Radio receiving unit, warning driving circuit and alarm are linked in sequence successively; Carry out data communication by wireless transmission between wireless transmitter module and radio receiving unit;
Wherein, acting as of power module is magnetic sensor, signal conditioning circuit, processor of single chip computer, wireless transmitter module power supply;
Acting as of permanent magnet produces the stationary magnetic field around item to be protected;
Acting as of magnetic sensor, whether the magnetic field around the detection item to be protected changes, and the magnetic field value that detects is sent to signal conditioning circuit;
Acting as of signal conditioning circuit, the magnetic field amount that magnetic sensor is detected converts electric signal to, sends processor of single chip computer to after signal condition and AD collection;
Acting as of processor of single chip computer by the electric signal that signal conditioning circuit is inputted, calculates initial magnetic field and each space magnetic field constantly of item to be protected, and process information sent to wireless transmitter module;
Acting as of wireless transmitter module is converted into wireless signal with the single-chip microcomputer process information and sends to radio receiving unit;
Acting as of radio receiving unit is converted to electric signal with the transmitted signal of wireless transmitter module, further drives alarm equipment alarm by the warning driving circuit.
2. a kind of theft alarm attached articles that detects based on magnetic according to claim 1, it is characterized in that: described magnetic sensor, comprise x axle magnetic detection chip, y axle magnetic detection chip and z axle magnetic detection chip, the chip of three Magnetic Sensors of the same race is carried out the quadrature installation along axis direction, and x, y, z axle magnetic detection chip gather respectively in the space along the magnetic field on x, y, z direction of principal axis.
3. article anti-theft alarm method that detects based on magnetic, it is characterized in that: described method is used burglar alarm as claimed in claim 1, and concrete steps are as follows:
Step 1, permanent magnet is arranged on item to be protected, after the magnetic field value that magnetic sensor is detected carries out signal condition by signal conditioning circuit, gathers through AD and send into processor of single chip computer; Calculate the initial space magnetic field of item to be protected by processor of single chip computer, as reference value;
Step 2, detect magnetic field around item to be protected by magnetic sensor, after the magnetic field amount that detects is carried out signal condition by signal conditioning circuit, gather through AD, send into processor of single chip computer;
Step 3, calculate the current space magnetic field of item to be protected by processor of single chip computer, and compare with reference value; Carry out the situation judgement according to comparison result:
If the current space magnetic field of item to be protected does not change, return to step 2;
If the current space magnetic field of item to be protected changes, judge that article are stolen, connect step 4;
Step 4, processor of single chip computer transmit stolen signal to wireless transmitter module, and send to wireless receiving module by wireless transmitter module; After wireless receiving module is received signal, drive alarm equipment alarm by the warning driving circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100057984A CN103093566A (en) | 2013-01-08 | 2013-01-08 | Article anti-thief alarm device based on magnetic testing |
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| CN2013100057984A CN103093566A (en) | 2013-01-08 | 2013-01-08 | Article anti-thief alarm device based on magnetic testing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105167508A (en) * | 2015-10-29 | 2015-12-23 | 成都小爱未来智慧科技有限公司 | Intelligent cup capable of recognizing whether cup cover is screwed off or not |
| CN109164494A (en) * | 2018-08-09 | 2019-01-08 | 厦门硅田系统工程有限公司 | A kind of ship terminal removes warning system and method |
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| WO2010101619A2 (en) * | 2009-03-02 | 2010-09-10 | Hector Sosa | Earth magnetic field based alarm system |
| CN201820343U (en) * | 2010-10-20 | 2011-05-04 | 悉雅特楼宇自控(杭州)有限公司 | Anti-dismantling detection device for alarm device |
| CN102147953A (en) * | 2010-02-04 | 2011-08-10 | 陈浩 | Real-time anti-theft alarm system for detecting magnetic field intensity fluctuation of Hall effect |
| CN201974905U (en) * | 2011-02-18 | 2011-09-14 | 华中科技大学 | Safe application device based on geomagnetism sensor |
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- 2013-01-08 CN CN2013100057984A patent/CN103093566A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442703A (en) * | 2002-03-04 | 2003-09-17 | 爱知知的微技股份有限公司 | Magnetic detection device |
| WO2010101619A2 (en) * | 2009-03-02 | 2010-09-10 | Hector Sosa | Earth magnetic field based alarm system |
| CN101697242A (en) * | 2009-10-23 | 2010-04-21 | 罗富强 | Method, device and system for preventing burglaries wirelessly and intelligently |
| CN102147953A (en) * | 2010-02-04 | 2011-08-10 | 陈浩 | Real-time anti-theft alarm system for detecting magnetic field intensity fluctuation of Hall effect |
| CN201820343U (en) * | 2010-10-20 | 2011-05-04 | 悉雅特楼宇自控(杭州)有限公司 | Anti-dismantling detection device for alarm device |
| CN201974905U (en) * | 2011-02-18 | 2011-09-14 | 华中科技大学 | Safe application device based on geomagnetism sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105167508A (en) * | 2015-10-29 | 2015-12-23 | 成都小爱未来智慧科技有限公司 | Intelligent cup capable of recognizing whether cup cover is screwed off or not |
| CN109164494A (en) * | 2018-08-09 | 2019-01-08 | 厦门硅田系统工程有限公司 | A kind of ship terminal removes warning system and method |
| CN109164494B (en) * | 2018-08-09 | 2020-08-04 | 厦门硅田系统工程有限公司 | Ship terminal removal alarm method based on ship terminal removal alarm system |
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Application publication date: 20130508 |