CN103136890B - Method and system for supervising goods and radio frequency identification card - Google Patents
Method and system for supervising goods and radio frequency identification card Download PDFInfo
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- CN103136890B CN103136890B CN201110372035.4A CN201110372035A CN103136890B CN 103136890 B CN103136890 B CN 103136890B CN 201110372035 A CN201110372035 A CN 201110372035A CN 103136890 B CN103136890 B CN 103136890B
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Abstract
An embodiment of the invention discloses a method and a system for supervising goods and a radio frequency identification device card. The method includes that the state of the radio frequency identification device (RFID) card is changed when goods to be supervised are moved; the RFID card sends alarming information to a base station in radio frequency method when the state of the RFID card is changed to reach alarming conditions, wherein the alarming information comprises unique card identification information identifying the RFID card; the base station forwards the alarm information to an upper computer; and the upper computer displays alarm prompting information of an abnormal working state of the goods to be supervised. By means of the method and system, effective supervision for public facilities can be achieved, and loss or damage of the public facilities can be found out timely.
Description
Technical field
The present invention relates to the communication technology, especially a kind of article surveillance method and system, radio frequency identification (radio frequency identification devices, hereinafter referred to as: RFID) block.
Background technology
Urban operating mechanism, such as well lid, cable cable collector, cable television line integral box etc., play a part very important in Municipal, once lose or damage, the hidden danger of secure context will be brought, or affect the normal operation in city and the normal life of people.Therefore, effectively supervising urban operating mechanism, monitor, is a kind of imperative demand of municipal administration.
Such as, for well lid, it is a kind of indispensable urban operating mechanism in city, well lid in city has different purposes, have plenty of draining, has plenty of communication, have plenty of CATV (cable television) etc., once lose or damage, the hidden danger of secure context will be brought, disability or the death of people may be caused at any time.Except the hidden danger of secure context, also can cause the loss of economic aspect, the vehicle at any time possibility road pavement travelled causes damage.In addition, a lot of inspection shaft inside is the critical facility such as telecommunication cable or optical cable, once well lid suffers that destruction can cause huge economic loss.Well lid due to different purposes adheres to different division managements separately.When well lid is lost or damage, the character for inspection shaft is difficult to define, and cannot find property right unit in time, cannot on-call maintenance.
Realizing in process of the present invention, inventor finds also there is not a kind of method of urban operating mechanism being carried out to effective monitoring, supervision in prior art, cannot the loss of Timeliness coverage urban operating mechanism or damage, thus cannot on-call maintenance or reparation, safe, the work having had a strong impact on people with live.
Summary of the invention
Embodiment of the present invention technical matters to be solved is: provide a kind of article surveillance method and system, radio frequency identification card, to realize the effective supervision to urban operating mechanism, the loss of Timeliness coverage urban operating mechanism or damage.
A kind of article surveillance method that the embodiment of the present invention provides, comprising:
Be moved in response to article to be regulated, the state of wireless radio frequency discrimination RFID card changes;
State change in response to rfid card reaches alert if, and rfid card sends warning message with RF-wise to base station, and described warning message comprises the card identification information of rfid card described in unique identification;
Described warning message is transmitted to host computer by base station;
Host computer is based on the alarm message of the duty exception of the described article to be regulated of described warning message display.
A kind of radio frequency identification card that the embodiment of the present invention provides, comprising:
Acceleration transducer, the state being moved generation in response to article to be regulated for detecting rfid card changes;
Microcontroller, reach alert if for the state change in response to rfid card, generate warning message, and control radio circuit unit and send warning message with RF-wise to base station, described warning message comprises the card identification information of described rfid card;
Radio circuit unit, under the control of described MCU, sends described warning message with RF-wise to base station;
Power-supply unit, for powering to acceleration transducer, MCU and radio circuit unit.
A kind of article surveillance system that the embodiment of the present invention provides, comprising:
Rfid card, for being moved in response to article to be regulated, state changes; State change in response to rfid card reaches alert if, and send warning message with RF-wise to base station, described warning message comprises the card identification information of described rfid card;
Base station, for being transmitted to host computer by described warning message;
Host computer, for the alarm message of the duty exception based on the described article to be regulated of described warning message display.
Based on the article surveillance method that the above embodiment of the present invention provides, equipment and system, be moved in response to article to be regulated, the state of rfid card changes, state change in response to rfid card reaches alert if, rfid card sends warning message with RF-wise to base station, by base station, warning message is transmitted to host computer, host computer shows the alarm message of the duty exception of article to be regulated based on warning message, compared with prior art, achieve the effective monitoring to article, such as, the effective monitoring of urban operating mechanism, can the loss of Timeliness coverage article or damage, to adopt an effective measure in time, such as, on-call maintenance or reparation, thus effective guarantee people work, the safety of life is with convenient.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of the invention provides in order to example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the process flow diagram of an article surveillance method of the present invention embodiment;
Fig. 2 is the process flow diagram of another embodiment of article surveillance method of the present invention;
Fig. 3 is the structural representation of a rfid card of the present invention embodiment;
Fig. 4 is the structural representation of an article surveillance system of the present invention embodiment;
Fig. 5 is the structural representation of another embodiment of article surveillance system of the present invention;
Fig. 6 is that the rfid card of the present invention's Application Example lays schematic diagram;
The rfid card state change schematic diagram that Fig. 7 is Application Example shown in Fig. 6 of the present invention;
Fig. 8 is that the rfid card of Another application embodiment of the present invention lays schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the process flow diagram of an article surveillance method of the present invention embodiment.As shown in Figure 1, the article method of this embodiment comprises:
101, be moved in response to article to be regulated, the state of rfid card changes, such as, and direction change, position change etc.Article to be regulated wherein include but not limited to urban operating mechanism, urban operating mechanism such as, well lid, cable cable collector, cable television line integral box, lamp stand, guardrail, power supply box etc.
In an embodiment of the present invention, specifically can according to the placement of practical application scene and article to be regulated or installation situation, arrange or rfid card is installed, when article to be regulated are moved, comprise and the movement of each position to any one direction such as to move, lift, the state of rfid card can change, and the intensity of variation of the state of this rfid card can along with the program that is moved of article to be regulated is linear or nonlinearities change, what the intensity of variation based on the state of rfid card correspondingly can know article to be regulated is moved program.
102, the state change in response to rfid card reaches alert if, and rfid card sends warning message with RF-wise to base station, and this warning message comprises the card identification information of unique identification rfid card, such as, and the title, numbering etc. of rfid card.
103, warning message is transmitted to host computer by base station.
104, host computer is based on warning message, and the card of display rfid card identifies the alarm message of the duty exception of corresponding article to be regulated.
The article surveillance method that the above embodiment of the present invention provides, be moved in response to article to be regulated, the state of rfid card changes, state change in response to rfid card reaches alert if, rfid card sends warning message with RF-wise to base station, by base station, warning message is transmitted to host computer, host computer shows the alarm message of the duty exception of article to be regulated based on warning message, thus the effective monitoring achieved article, such as, the effective monitoring of urban operating mechanism, can the loss of Timeliness coverage article or damage, to adopt an effective measure in time, such as, on-call maintenance or reparation, thus effective guarantee people work, the safety of life is with convenient.
As an alternative embodiment of the invention, the state change in response to rfid card does not reach alert if, and rfid card sends normal condition message with RF-wise to base station, and this normal condition message comprises the card identification information of rfid card; Normal condition message is transmitted to host computer by base station; Host computer shows the duty normal messages of article to be regulated based on normal condition message.
Further, as another embodiment of the present invention, state in the article surveillance method of embodiment on the invention, the attribute information of the article to be regulated of the card mark correspondence of rfid card can also be stored in host computer, such as, the kind of these article to be regulated, title, purposes, geographic location, affiliated function, the information such as responsible official, host computer is when receiving alarm message or the duty normal messages of rfid card, the attribute information treating these supervision article can also be obtained, when display alarm prompting message or duty normal messages, also show the attribute information of these article to be regulated, thus make keeper can know the current state of each article to be regulated easily, the article of positioning work abnormal state can be facilitated.
Fig. 2 is the process flow diagram of another embodiment of article surveillance method of the present invention.As shown in Figure 2, the article method of this embodiment comprises:
201, be moved in response to article to be regulated, the state of rfid card changes.
202, rfid card generates the status change data of state situation of change representing this rfid card, and compares this status change data and whether reach the state change threshold preset.Reach the state change threshold preset in response to this status change data, the state change of rfid card reaches alert if, performs 203.Otherwise do not reach the state change threshold preset in response to this status change data, the state change of rfid card does not reach alert if, performs 206.
203, rfid card sends warning message with RF-wise to base station, and this warning message comprises the card identification information of rfid card, such as, and the title, numbering etc. of rfid card.
204, warning message is transmitted to host computer by base station.
205, host computer, based on warning message, obtains the attribute information of the article to be regulated of the card mark correspondence of wherein rfid card, the alarm message of the duty exception of the article to be regulated of the card mark correspondence of display rfid card and attribute information.
Afterwards, the follow-up flow process of the present embodiment is no longer performed.
206, rfid card sends normal condition message with RF-wise to base station, and this normal condition message comprises the card identification information of rfid card.
207, normal condition message is transmitted to host computer by base station.
208, host computer, based on normal condition message, obtains the attribute information of the article to be regulated of the card mark correspondence of wherein rfid card, shows duty normal messages and the attribute information of article to be regulated.
Fig. 3 is the structural representation of a rfid card of the present invention embodiment.The rfid card of this embodiment can be used in the present invention the corresponding function of rfid card in above-mentioned each article surveillance embodiment of the method.As shown in Figure 3, it comprise acceleration transducer 301, microcontroller (MicroControl Unit, hereinafter referred to as: MCU) 302, radio circuit unit 303 and power-supply unit 304.
Wherein, acceleration transducer 301, the state being moved generation in response to article to be regulated for detecting rfid card changes.
MCU302, state change for the rfid card detected in response to acceleration transducer 301 reaches alert if, generate warning message, and control radio circuit unit 303 and send warning message with RF-wise to base station, this warning message comprises the card identification information of rfid card.
Radio circuit unit 303, under the control of MCU302, sends warning message with RF-wise to base station.
Power-supply unit 304, for powering to acceleration transducer 301, MCU302 and radio circuit unit 303, provides acceleration transducer 301, MCU302 and the electric energy needed for radio circuit unit 303.
The rfid card that the above embodiment of the present invention provides, state can be moved in response to article to be regulated to change, state change in response to rfid card reaches alert if, rfid card sends warning message with RF-wise to base station, by base station, warning message is transmitted to host computer, host computer shows the alarm message of the duty exception of article to be regulated based on warning message, thus the effective monitoring achieved article, such as, the effective monitoring of urban operating mechanism, can the loss of Timeliness coverage article or damage, to adopt an effective measure in time, such as, on-call maintenance or reparation, thus effective guarantee people work, the safety of life is with convenient.
In addition, corresponding to embodiment of the method shown in Fig. 2, as another embodiment of rfid card of the present invention, MCU302 also can be used for not reaching alert if in response to the state change of rfid card, generate normal condition message, and controlling radio circuit unit 303 with RF-wise to base station transmission normal condition message, this normal condition message comprises the card identification information of rfid card.
Further, as another embodiment of rfid card of the present invention, acceleration transducer 301 also can be used for generating the status change data of the state situation of change representing this rfid card according to the state change of rfid card and sending to MCU302.Accordingly, whether MCU302 also reaches for comparing this status change data the state change threshold preset; Reach the state change threshold preset in response to this status change data, the state change of rfid card reaches alert if; Do not reach the state change threshold preset in response to this status change data, the state change of rfid card does not reach alert if.
Fig. 4 is the structural representation of an article surveillance system of the present invention embodiment.The article surveillance system of this embodiment can be used in the present invention the flow process of above-mentioned each article surveillance embodiment of the method.As shown in Figure 4, it comprises rfid card 1, base station 2 and host computer 3.
Wherein, rfid card 1, for being moved in response to article to be regulated, state changes; State change in response to rfid card reaches alert if, and send warning message with RF-wise to base station, this warning message comprises the card identification information of rfid card.
Base station 2, the warning message for being sent by rfid card 1 is transmitted to host computer 3.
Host computer 3, for the warning message forwarded based on base station 2, shows the alarm message of the duty exception of article to be regulated.
The article surveillance system that the above embodiment of the present invention provides, be moved in response to article to be regulated, the state of rfid card changes, state change in response to rfid card reaches alert if, rfid card sends warning message with RF-wise to base station, by base station, warning message is transmitted to host computer, host computer shows the alarm message of the duty exception of article to be regulated based on warning message, thus the effective monitoring achieved article, such as, the effective monitoring of urban operating mechanism, can the loss of Timeliness coverage article or damage, to adopt an effective measure in time, such as, on-call maintenance or reparation, thus effective guarantee people work, the safety of life is with convenient.
In addition, corresponding to embodiment of the method shown in Fig. 2, as another embodiment of article surveillance system of the present invention, rfid card 1, the state change that can also be used in response to rfid card does not reach alert if, send normal condition message with RF-wise to base station 2, this normal condition message comprises the card identification information of rfid card.Accordingly, what base station 2 also sent for rfid card is transmitted to host computer 3 by normal condition message.The normal condition message of host computer 3 also for sending based on rfid card 1 shows the duty normal messages of article to be regulated.
Further, as another embodiment of article surveillance system of the present invention, host computer 3 can also be used for the attribute information of the article to be regulated of the card mark correspondence that can also store rfid card, when receiving alarm message or the duty normal messages of rfid card, obtain the attribute information of the article to be regulated of the card mark correspondence of wherein rfid card, when display alarm prompting message or duty normal messages, also show the attribute information of these article to be regulated.
As another embodiment of article surveillance system of the present invention, state in the article surveillance system of each embodiment on the invention, rfid card 1 also changes for the state in response to this rfid card 1, generate the status change data of state situation of change representing this rfid card 1, and compare this status change data and whether reach the state change threshold preset; Reach the state change threshold preset in response to this status change data, the state change of rfid card 1 reaches alert if; Do not reach the state change threshold preset in response to this status change data, the state change of rfid card 1 does not reach alert if.
In addition, in the article surveillance system of the various embodiments described above of the present invention, rfid card 1 specifically can adopt the structure of any embodiment shown in Fig. 3 to realize, as shown in Figure 5, for the structural representation of another embodiment of article surveillance system of the present invention, in this embodiment, rfid card 1 specifically have employed the structure of an embodiment shown in Fig. 3.
Below for article position to be regulated well lid, being further described the application of the embodiment of the present invention, is that the situation of other article is applicable equally for article to be regulated.
In advance rfid card is arranged on well lid to be regulated or in the inspection shaft at this well lid place, to monitor the duty of well lid, that is: monitors well lid and whether be moved.In practical application, by various mode, rfid card can be arranged on well lid to be regulated or in the inspection shaft at this well lid place, such as, by the mode such as mechanical scaffolding device, welding, rfid card can be arranged on well lid to be regulated or in the inspection shaft at this well lid place, epoxy resin, pitch, various glue can also be utilized, rfid card is bonded on well lid to be regulated or in the inspection shaft at this well lid place.As shown in Figure 6, for the rfid card of the present invention's Application Example lays schematic diagram, the schematic shows when well lid is in normal operating conditions, rfid card lay example.In this embodiment, rfid card is arranged in inspection shaft by a linkage support, and this linkage support passes through a utilizing powerful magnet for adsorption on well lid.When well lid is moved, such as, when being lifted, pass through linkage, make the state of rfid card that corresponding change occur, this change is detected by the acceleration transducer in rfid card, generate the status change data of the state situation of change representing this rfid card and pass to MCU, MCU compares this status change data and whether reaches the state change threshold preset, and judges whether to reach alert if.If reach alert if, MCU just controls radio circuit unit to neighbouring Base Transmitter warning message.If do not reach alert if, MCU just controls radio circuit unit to neighbouring Base Transmitter normal condition message.
As shown in Figure 7, be the rfid card state change schematic diagram of Application Example shown in Fig. 6 of the present invention.The schematic shows a state of rfid card after well lid is removed.Because well lid is moved, the position residing for rfid card and direction all there occurs change.
In addition, if rfid card is arranged on above well lid, well lid be moved such as be lifted time, rfid card also can produce identical moving and lift angle with well lid, that is: the state of rfid card there occurs corresponding change, and acceleration transducer can detect the state change of rfid card, generates the status change data of the state situation of change representing this rfid card and passes to MCU, MCU compares this status change data and whether reaches the state change threshold preset, and judges whether to reach alert if.If reach alert if, MCU just controls radio circuit unit to neighbouring Base Transmitter warning message.If do not reach alert if, MCU just controls radio circuit unit to neighbouring Base Transmitter normal condition message.
As shown in Figure 8, for the rfid card of Another application embodiment of the present invention lays schematic diagram, the schematic shows when well lid is in normal operating conditions, rfid card lay example.In this embodiment, rfid card is arranged on well lid by welding or bonding mode.When well lid is moved, such as, when being lifted, there is corresponding change in the state of rfid card, this change is detected by the acceleration transducer in rfid card, generate the status change data of the state situation of change representing this rfid card and pass to MCU, MCU compares this status change data and whether reaches the state change threshold preset, and judges whether to reach alert if.If reach alert if, MCU just controls radio circuit unit to neighbouring Base Transmitter warning message.If do not reach alert if, MCU just controls radio circuit unit to neighbouring Base Transmitter normal condition message.
Above Application Example is detected by the state of acceleration transducer technology to well lid, by RFID technique, the status information of well lid is uploaded to neighbouring base station, this information is uploaded to the host computer of Surveillance center by base station again, adopt acceleration transducer technology and RFID technique to carry out effective monitoring to well lid, improve the manageability of well lid.
Except well lid, the embodiment of the present invention can also be used to monitor various urban operating mechanism, and such as, lamp stand, guardrail, power supply box etc., only need damaged according to article to be regulated or lose the situation of movement that must occur and install or arrange rfid card.Such as, rfid card is installed on lamp stand, if lamp stand run-off the straight, warning message will be sent to the host computer of Surveillance center; Rfid card is installed on guardrail, if guardrail is hit or tilts all can send warning message to the host computer of Surveillance center; Rfid card is installed on power supply box, if power supply box is illegally opened, warning message will be sent to the host computer of Surveillance center.
In this instructions, each embodiment all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, same or analogous part cross-reference between each embodiment.For rfid card and article surveillance system embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that programmed instruction is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
The embodiment of the present invention achieves the effective monitoring to article, such as, and the effective monitoring of urban operating mechanism, can the loss of Timeliness coverage article or damage, to adopt an effective measure in time, such as, on-call maintenance or reparation, thus the safety of effective guarantee people work, life is with convenient.
Claims (10)
1. an article surveillance method, is characterized in that, comprising:
Be moved in response to article to be regulated, the state of wireless radio frequency discrimination RFID card changes;
Described rfid card generates the status change data of the state situation of change representing this rfid card, and whether more described status change data reaches the state change threshold preset;
Do not reach the state change threshold preset in response to this status change data, the state change of rfid card does not reach alert if;
The state change threshold preset is reached in response to described status change data, the state change of rfid card reaches alert if, rfid card sends warning message with RF-wise to base station, and described warning message comprises the card identification information of rfid card described in unique identification;
Described warning message is transmitted to host computer by base station;
Host computer is based on the alarm message of the duty exception of the described article to be regulated of described warning message display.
2. method according to claim 1, is characterized in that, also comprises:
State change in response to rfid card does not reach alert if, and rfid card sends normal condition message with RF-wise to base station, and described normal condition message comprises the card identification information of described rfid card;
Described normal condition message is transmitted to host computer by base station;
Host computer is based on the duty normal messages of the described article to be regulated of described normal condition message display.
3. method according to claim 1 and 2, is characterized in that, also comprises:
Described host computer also obtains the attribute information of described article to be regulated, when showing described alarm message, also shows the attribute information of described article to be regulated.
4. method according to claim 2, is characterized in that, also comprises:
Described host computer also obtains the attribute information of described article to be regulated, when showing described duty normal messages, also shows the attribute information of described article to be regulated.
5. a radio frequency identification card, is characterized in that, comprising:
Acceleration transducer, the state being moved generation in response to article to be regulated for detecting rfid card changes; And generate the status change data of the state situation of change representing this rfid card according to the state change of described rfid card and send to microcontroller;
Whether microcontroller, reach the state change threshold preset for more described status change data; Reach the state change threshold preset in response to this status change data, the state change of rfid card reaches alert if; Do not reach the state change threshold preset in response to this status change data, the state change of rfid card does not reach alert if; State change in response to rfid card reaches alert if, and generate warning message, and control radio circuit unit and send warning message with RF-wise to base station, described warning message comprises the card identification information of described rfid card;
Radio circuit unit, under the control of described MCU, sends described warning message with RF-wise to base station;
Power-supply unit, for powering to acceleration transducer, MCU and radio circuit unit.
6. radio frequency identification card according to claim 5, it is characterized in that, described MCU does not also reach alert if for the state change in response to rfid card, generate normal condition message, and controlling radio circuit unit with RF-wise to base station transmission normal condition message, described normal condition message comprises the card identification information of described rfid card.
7. an article surveillance system, is characterized in that, comprising:
Rfid card, for being moved in response to article to be regulated, state changes; And change in response to the state of this rfid card, generate the status change data of state situation of change representing this rfid card, and compare this status change data and whether reach the state change threshold preset; Reach the state change threshold preset in response to this status change data, the state change of rfid card reaches alert if; Do not reach the state change threshold preset in response to this status change data, the state change of rfid card does not reach alert if; State change in response to rfid card reaches alert if, and send warning message with RF-wise to base station, described warning message comprises the card identification information of described rfid card;
Base station, for being transmitted to host computer by described warning message;
Host computer, for the alarm message of the duty exception based on the described article to be regulated of described warning message display.
8. system according to claim 7, it is characterized in that, described rfid card, also do not reach alert if for the state change in response to rfid card, send normal condition message with RF-wise to base station, described normal condition message comprises the card identification information of described rfid card;
Described base station, also for described normal condition message is transmitted to host computer;
Described host computer, also for the duty normal messages based on the described article to be regulated of described normal condition message display.
9. the system according to claim 7 or 8, is characterized in that, described host computer, also for obtaining the attribute information of described article to be regulated, when showing described alarm message, also shows the attribute information of described article to be regulated.
10. system according to claim 8, is characterized in that, described host computer, also for obtaining the attribute information of described article to be regulated, when showing described duty normal messages, also shows the attribute information of described article to be regulated.
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| CN201110372035.4A CN103136890B (en) | 2011-11-22 | 2011-11-22 | Method and system for supervising goods and radio frequency identification card |
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| CN201110372035.4A CN103136890B (en) | 2011-11-22 | 2011-11-22 | Method and system for supervising goods and radio frequency identification card |
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| CN103354015A (en) * | 2013-07-08 | 2013-10-16 | 周义波 | Novel city manhole-cover management system |
| CN106381888B (en) * | 2016-11-25 | 2019-03-12 | 合肥大明节能科技股份有限公司 | Manhole cover anti-theft detection device and control method |
| CN106408814A (en) * | 2016-11-29 | 2017-02-15 | 浙江方大智控科技有限公司 | Manhole cover anti-theft alarm method and 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 |
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| US7848905B2 (en) * | 2000-12-26 | 2010-12-07 | Troxler Electronic Laboratories, Inc. | Methods, systems, and computer program products for locating and tracking objects |
| US20060071774A1 (en) * | 2004-02-26 | 2006-04-06 | Brown Katherine A | Item monitoring system and methods using an item monitoring system |
| AU2007233199B2 (en) * | 2006-03-31 | 2011-06-09 | Checkpoint Systems, Inc. | System and method for securing and displaying items for merchandising |
| CN101221682A (en) * | 2008-01-21 | 2008-07-16 | 徐承东 | Wireless vibration detecting and warning system |
| CN201910109U (en) * | 2010-12-31 | 2011-07-27 | 深圳市华儒科技有限公司 | Anti-theft and anti-loss alarm system |
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