CN101510341A - Theftproof system for monitoring exhibits based on acceleration sensor - Google Patents

Theftproof system for monitoring exhibits based on acceleration sensor Download PDF

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Publication number
CN101510341A
CN101510341A CNA2009100610957A CN200910061095A CN101510341A CN 101510341 A CN101510341 A CN 101510341A CN A2009100610957 A CNA2009100610957 A CN A2009100610957A CN 200910061095 A CN200910061095 A CN 200910061095A CN 101510341 A CN101510341 A CN 101510341A
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CN
China
Prior art keywords
acceleration
processor
signal
alerting signal
monitoring
Prior art date
Application number
CNA2009100610957A
Other languages
Chinese (zh)
Inventor
刘勃
胡三庆
Original Assignee
华中科技大学
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 华中科技大学 filed Critical 华中科技大学
Priority to CNA2009100610957A priority Critical patent/CN101510341A/en
Publication of CN101510341A publication Critical patent/CN101510341A/en

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Abstract

The invention provides a monitoring anti-theft system for items on display based on an acceleration sensor, which comprises the acceleration sensor, a wave filter, a processor, an alarm signal wireless sending terminal and an alarm signal wireless receiving terminal which are connected in sequence. An acceleration signal detected by the acceleration sensor is transmitted to the processor after being filtered through the wave filter, and then, the processor judges whether the acceleration signal is effective or not, if so, the processor drives the alarm signal sending terminal to send the alarm signal to the alarm signal receiving terminal, and after receiving the alarm signal, the alarm signal receiving terminal immediately drives an alarm to work. The monitoring anti-theft system has the advantages that the stealing of the small items on display at the exhibition site is effectively avoided, the cost is low, the volume is small, and the popularization is easy.

Description

A kind of theftproof system for monitoring exhibits based on acceleration transducer

Technical field

The present invention relates to a kind of monitoring anti-theft system, especially be applied to the exhibit monitoring of public's venues such as exhibition center, museum and antitheft.

Background technology

At present, in large-scale public situation such as exhibition center, museums, the anti-thefting monitoring of showpiece is mainly based on camera.Yet when the numerous or monitored showpiece volume of venue visitor number hour, camera is difficult to effectively capture undesirable's malicious sabotage or pilferage behavior.

Summary of the invention

The object of the present invention is to provide a kind of exhibit monitoring alarm based on acceleration transducer, effectively prevent to put on display the little showpiece theft phenomenon in the scene, and cost is low, volume is little, easily promotes.

A kind of theftproof system for monitoring exhibits based on acceleration transducer, comprise acceleration transducer, wave filter, processor, alerting signal wireless transmission end and the alerting signal wireless interface receiving end of joining successively, the detected acceleration signal of acceleration transducer sends processor to behind filter filtering, whether processor judgement acceleration signal is effective, if effectively, then drive the alerting signal transmitting terminal and send alerting signal to the alerting signal receiving end, the alerting signal receiving end is received the alarm of ringing immediately after the alerting signal.

Technique effect of the present invention is embodied in: the spatiality of the real-time integral and calculating showpiece of supervisory system of the present invention, when finding that there is space displacement in monitored showpiece, then these vibrations are considered as extraneous pilferage behavior, and in time send the on-the-spot security personnel of wireless alarm signal notice.Crucial part of the present invention is to know the showpiece state by the detected vibration signal of acceleration transducer, the reliability height.This system not only can carry out anti-thefting monitoring, but also on-site supervision visit personnel's malicious sabotage behavior simultaneously then is considered as these vibrations the artificial destruction behavior of malice when showpiece has paranormal huge violent shock moving and notifies on-the-spot security personnel when detecting.This burglary-resisting system volume is little, in light weight, easily installs, and is cheap for manufacturing cost, can promote the use the how noisy showground exhibit monitoring in the people on a large scale.

Description of drawings

Fig. 1 is a system architecture diagram of the present invention;

Fig. 2 is a Kalman filter design diagram of the present invention.

Embodiment

Below in conjunction with structured flowchart and embodiment, specifically illustrate the present invention.

Fig. 1 is a structured flowchart of the present invention, acceleration transducer among the embodiment adopts triaxial accelerometer SCA3000 chip, and wave filter is realized by software mode, adopts Kalman filter, processor uses the C51 single-chip microcomputer, and alerting signal sends and receiving end adopts the nRF24E1 chip.

The acceleration detection end of being made up of accelerometer, wave filter, dsp processor, RF circuit is positioned at showpiece inside.When acceleration transducer output acceleration signal, this signal is through filter filtering, and DSP sends corresponding alerting signal by the RF circuit to receiving end after handling and adjudicating.After receiving end is received the alerting signal that transmits via RF, the local alarm of ringing immediately.

For reducing the acceleration information error, system must carry out filtering to the accelerometer output signal.Present embodiment adopts Kalman filter to handle the accelerometer output signal.Kalman's state estimation model as shown in Figure 2.Footmark k wherein, k+1 represent constantly, before (-) representative state upgrades, and after (+) representative state upgrades, Be the system state matrix, K is a kalman gain, and H is the measurement matrix, Be the acceleration condition matrix, Q is system's white noise average variance, and R is the systematic measurement error average variance, and z is the systematic survey value, B kBe the acceleration condition operation matrix, T representing matrix transposition.

Because the people of museum is many and noisy, shop inner air flow and vibrations can cause the small vibrations of showpiece.For anti-locking system shakes artificial destruction or the pilferage behavior that is judged to malice with normal showpiece, dsp processor has adopted decision algorithm that acceleration is adjudicated.Wherein when decision threshold, need put into the venue scene by degree of will speed up sensor, observation is the acceleration output valve during at normal monitor state in this system, gets under the normal condition the maximum output valve of acceleration transducer as decision threshold according to statistical property.In monitoring after this, when showpiece oscillatory acceleration during less than this decision threshold, it is invalid signals that this system looks this detected signal automatically.When the showpiece oscillatory acceleration surpassed this value, all acceleration informations in a period of time were then constantly monitored by system.By integral operation, system draw roughly showpiece at this moment between the section in space displacement.According to this result of calculation, this lawbreaking activities of system's decidable is malicious sabotage or is the pilferage behavior, thereby sends corresponding alerting signal to receiving end.

Alerting signal is sent to the receiving end of displacement venue security personnel office by the RF circuit, and receiving end obtains driving loudspeaker at once behind the signal and sends corresponding alarm sound.

More than be preferred forms of the present invention, according to content disclosed by the invention, all genus utilize the space vibrations burglary-resisting system of accelerometer design all to belong to abuse.

Claims (1)

1, a kind of theftproof system for monitoring exhibits based on acceleration transducer, it is characterized in that, comprise acceleration transducer, wave filter, processor, alerting signal wireless transmission end and the alerting signal wireless interface receiving end of joining successively, the detected acceleration signal of acceleration transducer sends processor to behind filter filtering, whether processor judgement acceleration signal is effective, if effectively, then drive the alerting signal transmitting terminal and send alerting signal to the alerting signal receiving end, the alerting signal receiving end is received the alarm of ringing immediately after the alerting signal.
CNA2009100610957A 2009-03-09 2009-03-09 Theftproof system for monitoring exhibits based on acceleration sensor CN101510341A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2009100610957A CN101510341A (en) 2009-03-09 2009-03-09 Theftproof system for monitoring exhibits based on acceleration sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2009100610957A CN101510341A (en) 2009-03-09 2009-03-09 Theftproof system for monitoring exhibits based on acceleration sensor

Publications (1)

Publication Number Publication Date
CN101510341A true CN101510341A (en) 2009-08-19

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Family Applications (1)

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CNA2009100610957A CN101510341A (en) 2009-03-09 2009-03-09 Theftproof system for monitoring exhibits based on acceleration sensor

Country Status (1)

Country Link
CN (1) CN101510341A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101794492A (en) * 2010-03-16 2010-08-04 江苏中讯数码电子有限公司 Alarm triggering device and automatic energy-saving method thereof
CN102103784A (en) * 2011-02-21 2011-06-22 惠州Tcl移动通信有限公司 Anti-missing monitoring system and implementation method thereof
CN102568137A (en) * 2012-01-04 2012-07-11 哈尔滨工业大学 Laptop burglar alarm based on wireless network
CN102798731A (en) * 2012-07-14 2012-11-28 福建联迪商用设备有限公司 Realization method for preventing POS (Point-Of-Sale) from being moved
CN102842195A (en) * 2011-06-24 2012-12-26 深圳中兴力维技术有限公司 Stationary item antitheft device, stationary item antitheft system and stationary item antitheft method based on internet of things
CN102842194A (en) * 2011-06-24 2012-12-26 深圳中兴力维技术有限公司 Antitheft device, antitheft system and antitheft method
CN103065406A (en) * 2012-12-28 2013-04-24 洪小莹 Wireless method and device of exhibit management
CN103377532A (en) * 2012-04-12 2013-10-30 崔光武 Infrared induction voice-broadcasting guardrail
CN107368003A (en) * 2017-08-31 2017-11-21 深圳市杰尔斯展示股份有限公司 A kind of monitoring security of exhibition hall system
CN107689126A (en) * 2017-07-28 2018-02-13 广东工业大学 A kind of networking goods monitoring system based on acceleration detection
CN109961300A (en) * 2017-12-14 2019-07-02 北京京东尚科信息技术有限公司 Obtain the method and system for showing object attention rate

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101794492A (en) * 2010-03-16 2010-08-04 江苏中讯数码电子有限公司 Alarm triggering device and automatic energy-saving method thereof
CN102103784A (en) * 2011-02-21 2011-06-22 惠州Tcl移动通信有限公司 Anti-missing monitoring system and implementation method thereof
CN102842195A (en) * 2011-06-24 2012-12-26 深圳中兴力维技术有限公司 Stationary item antitheft device, stationary item antitheft system and stationary item antitheft method based on internet of things
CN102842194A (en) * 2011-06-24 2012-12-26 深圳中兴力维技术有限公司 Antitheft device, antitheft system and antitheft method
CN102842194B (en) * 2011-06-24 2016-08-03 深圳中兴力维技术有限公司 A kind of anti-theft device, system and method
CN102568137A (en) * 2012-01-04 2012-07-11 哈尔滨工业大学 Laptop burglar alarm based on wireless network
CN103377532A (en) * 2012-04-12 2013-10-30 崔光武 Infrared induction voice-broadcasting guardrail
CN102798731A (en) * 2012-07-14 2012-11-28 福建联迪商用设备有限公司 Realization method for preventing POS (Point-Of-Sale) from being moved
CN103065406A (en) * 2012-12-28 2013-04-24 洪小莹 Wireless method and device of exhibit management
CN103065406B (en) * 2012-12-28 2015-03-25 洪小莹 Wireless method of exhibit management
CN107689126A (en) * 2017-07-28 2018-02-13 广东工业大学 A kind of networking goods monitoring system based on acceleration detection
CN107368003A (en) * 2017-08-31 2017-11-21 深圳市杰尔斯展示股份有限公司 A kind of monitoring security of exhibition hall system
CN109961300A (en) * 2017-12-14 2019-07-02 北京京东尚科信息技术有限公司 Obtain the method and system for showing object attention rate

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