CN101408925B

CN101408925B - RFID region partitioning and scope monitoring system and method

Info

Publication number: CN101408925B
Application number: CN200710046900XA
Authority: CN
Inventors: 黄林祺; 白凌姿; 卢纯青; 俞哲; 黄平
Original assignee: SHANGHAI PING AN INVESTMENT CO Ltd
Current assignee: SHANGHAI PING AN INVESTMENT CO Ltd
Priority date: 2007-10-11
Filing date: 2007-10-11
Publication date: 2012-06-13
Anticipated expiration: 2027-10-11
Also published as: CN101408925A

Abstract

The invention discloses an RFID area dividing and range monitoring method. The method comprises the following steps: covering a range to be divided and monitored with a signal transmitted from an RFID antenna, and receiving a signal reflected by an object in the dividing and monitoring range in response to the transmitted signal; reflecting the signal transmitted from the RFID antenna by a spacer to cause the reflected signal to rapidly attenuate after leaving the area divided by the spacer; reading information of the signal received by the RFID antenna to detect an RFID tag in the divided area; and monitoring the area according to judgment conditions stored in advance. The RFID area dividing and range monitoring method and a system thereof can divide a detection range into an 'allowable work area' and an 'forbidden work area', and effectively monitor working conditions of staff in the work area, thus significantly improving the monitoring performance of the detection range, improving safety and enhancing convenience for users.

Description

RFID area dividing and scope monitoring system and method

Technical field

The present invention relates to the method that this system of RFID area dividing and scope monitoring system and use divides and monitors for sensing range.

Background technology

Moving machine room is in the process of construction and day-to-day operation maintenance at present; Management to various kinds of equipment in the machine room and entering machine room staff; The demand that has following aspect: hope carrying out area dividing (these zones are unit with row's equipment all usually) in the machine room (1); And consider that the situation of security against fire and practical operation, these zones can not be again to carry out " the hard isolation " through wall or fence, should carry out through certain means " soft isolation "; (2) hope for different personnel; Carry out real-time locating and monitoring, and judge automatically that by system its residing position is " permission perform region ", still " forbidding the perform region "; Get into " forbidding the perform region " if find these personnel, carry out the warning of several different methods at once; (3) for the personnel that are in " permission perform region ", to hope to pass through someway, the real-time working condition to these personnel is monitored.

For the demand, have two main difficult points: (1) means of area dividing among a small circle lacks, and traditional honeycomb fashion zone division dynamics is too big, and dirigibility is bad; (2) carry out the zone cutting through method such as infrared, only can monitor the simple scenario on border, in the time of maybe need monitoring more concrete information to intra-zone, then powerless.

In addition, how carrying out the indoor occupant location of little dynamics, also is a stubborn problem, and positioning systems such as the GPS of widespread use at present or triangle location, base station all are the scenes of the large scale that is directed against.

Therefore, need a kind of area dividing and scope monitoring system and method, it can be divided and monitor for surveyed area effectively.

Summary of the invention

Therefore, the invention is intended to solve the above-mentioned prior art problems of mentioning.

According to the object of the invention; A kind of RFID area dividing and scope monitoring system are provided; It comprises: one or more RFID antennas; It is set in the middle of the scope that need divide and monitor, continues transmitting RF ID signal, and receives the signal that the reflection object of RFID signal in monitoring range returned; One or more separators; Reflect the RFID signal that the RFID antenna emits through it; Make this signal leave this by back, the zone decay rapidly that separator is divided, wherein, the separator that each RFID antenna is corresponding with it limits the scope in the zone of being divided; And in this scope, the signal of being launched by this RFID antenna keeps certain intensity; Information read device, it reads the information of carrying in the reflected signal of one or more RFID antennas receptions.

Wherein, these one or more separators can be the equipment frames itself in the machine room, also can be the artificial metal spacer that is provided with.

According to a further aspect in the invention; A kind of RFID area dividing and scope method for supervising are provided; It comprises: transmitted by the RFID antenna and wait to divide and monitoring range with covering, and receive the signal that the reflection object of signal in this division and monitoring range launched returned; Reflect by the signal of separator for the emission of RFID antenna; So that the signal of this reflection is leaving back, the zone decay rapidly of being divided by separator; Wherein, The separator that each RFID antenna is corresponding with it limits the scope in the zone of being divided, and in this scope, the signal of being launched by this RFID antenna keeps certain intensity; Read the information in the signal that the RFID antenna receives, to detect the RFID label in the zone of this division; Rule of judgment according to storage is in advance monitored this scope.

Wherein, this separator can be the equipment frame itself in the machine room, also can be the artificial metal spacer that is provided with.

Through RFID area dividing of the present invention and scope monitoring system and method; Can carry out effective area dividing for sensing range; Being divided into " permission perform region " and " forbidding the perform region ", and the personnel's in the zone working condition effectively monitored.

Through above-mentioned RFID area dividing and scope monitoring system and method, can significantly improve monitoring performance for sensing range, improve security, and owing to accomplish scope division and monitoring automatically by system, it has increased the user convenience degree.

Description of drawings

Fig. 1 is the composition frame chart according to RFID area dividing of the present invention and scope monitoring system;

Fig. 2 shows the exemplary process diagram according to RFID area dividing of the present invention and scope method for supervising;

Fig. 3 schematically shows the instance of disposing of RFID area dividing and scope monitoring system on the spot;

Fig. 4 shows the view of the situation that allows zone and prohibited area monitoring;

Fig. 5 shows the view of the instance that allows the log in the zone.

Embodiment

Describe the preferred embodiments of the present invention in detail below with reference to accompanying drawing.

At first, with the principle of work of describing RFID area dividing of the present invention and scope monitoring system and method.Here; Scope division and supervisory system and method solution based on the RFID technology; Mainly be to utilize RFID monitoring distance characteristics far away; Combine the concrete characteristics (equipment frame has good reflecting properties to the RFID radiofrequency signal) of concrete moving machine room equipment simultaneously, scope division and personnel's area monitoring are unified on the information platform, solve.

Wherein, at place, the corridor suspension RFID of two row's equipment frames antenna, because equipment frame is to the reflecting effect of radiofrequency signal; The read range of an antenna can cover whole corridor just, and in case gone out the zone, corridor, the reflecting effect disappearance; Radio frequency energy decays rapidly; Can form significantly border, this for moving machine room is the area dividing demand of unit with row, through disposing RFID antenna and fetch equipment; Can read the associating in zone fully through a plurality of antennas, accomplish the requirement of area dividing.

After carrying out area dividing through the RFID technology; Each zone all is the monitoring range of RFID, and the judgement that therefore whether personnel is allowed to get into this zone is equal to fully in the RFID guarded region; Legitimate verification to personnel RFID chest card information; And the latter is through rfid system, can realize fully, thereby satisfy application demand.

For the working condition of personnel in allowing the zone, present rfid system can provide two category informations; One type is the time span of personnel in the perform region and the information of distribution, and in a single day another kind of is out of joint, can pass through the time; When the problem of finding out occurs, each related personnel's position.

Fig. 1 is the composition frame chart according to RFID area dividing of the present invention and scope monitoring system.

As shown in Figure 1, RFID area dividing of the present invention and scope monitoring system 10 are made up of three parts: RFID scope Monitor And Control Subsystem 100, rfid system information platform 200 and remote client's terminal system 300.

RFID scope Monitor And Control Subsystem 100 comprises: RFID information reading module 101, and it is used to read the RFID information in the defined area (delimitation in zone is accomplished through disposing a plurality of RFID antennas); Network interface and regional combination control module 102, it will monitor RFID information and report server platform through Ethernet; And sound and light alarm and display control module 103, it carries out necessary sound and light alarm action according to the differentiation result who is sent it back by server.

Rfid system information platform 200 is mainly used in the request of data according to each downstream subsystem, accomplishes record, differentiation to data, and sends relevant response instruction.

Remote client's terminal system 300 is used to realize the interactive function with the user; Here; For the RFID scope monitoring system; Remote client's terminal system 300 comprises two types of clients: remote monitoring client 301 is used to receive the monitoring situation of each zoning, so that carry out centralized remote monitoring; Inner management client 302, it is confirmed for the region request that the personnel that submit to allow to get into.

Following Fig. 2 shows the exemplary process diagram according to RFID area dividing of the present invention and scope method for supervising.

As shown in Figure 2, the treatment scheme of RFID area dividing and scope monitoring system comprises:

When this system started working, the control module of this RFID scope Monitor And Control Subsystem was sent " data are obtained " instruction to read module, obtains the RFID information (S101) in the up-to-date ready-portioned guarded region.Here; Read module carries out the RFID information acquisition automatically, and per second reaches (concrete parameter is relevant with selected device) up to a hundred times, therefore can not miss any monitor message; And control module is obtained data frequency from read module; Can set according to concrete application demand, be generally per second several times, both can meet the demands fully.Afterwards, read module is given control module with the RFID information feedback in the up-to-date guarded region, and sends it to rfid system information platform (S102) by control module.Here; After control module rearranges data layout; The RFID information that will read from a plurality of antennas according to dividing region, is fused to the data message of the logic guarded region of formulation; Thereby data (possibly comprise a plurality of RFID information simultaneously, also possibly not comprise any RFID information) are passed to the system information platform through network.

The rfid system information platform is resolved (S103) with the data that receive, wherein according to the watchdog routine of storing in advance subsequently; To each bar RFID data; From database, obtain relevant " allowing to get into the zone " data successively,, be regarded as illegal entering if do not find " allowing to get into the zone " data of coupling; And the differentiation result that will negate is sent to RFID scope Monitor And Control Subsystem, through sound and light alarm module report to the police (S104).And, if differentiate for allowing the writing task time (S105).Simultaneously; Regardless of the result of determination of server, this rfid system information platform sends to remote monitoring client (S106) with this information, is convenient to centralized telemanagement; In case find the illegal situation that gets into prohibited area; Can reaffirm through the video supplementary, can pass through microphone simultaneously, notify the related personnel to leave as early as possible.

Fig. 3 shows an instance of disposing of RFID area dividing and scope monitoring system on the spot.

As shown in Figure 3, RFID area dividing and scope watch-dog are through the deployment of antenna; Realize dividing region, a common fetch equipment can be with four antennas, forms a monitor node; A plurality of monitor nodes are joined together, and (be divided into 4 guarded regions among the figure, each guarded region is made up of two monitor nodes to form guarded region; Shade is actual guarded region scope among the figure); Be connected through coaxial cable between antenna and the equipment, because the span of actual monitored scope is bigger, cable length need extend to about 10～15 meters.RFID antenna and fetch equipment are considered to install through furred ceiling, for avoiding the interference of coaxial cable to the available data circuit, consider newly to set up one deck chute.The actual monitored scope of RFID antenna can be according to concrete environment, to adjusting of aerial position, angle and fetch equipment power.All scope watch-dogs through Ethernet interface, insert internal lan, and completion is connected with the server info platform.

And, because the design of whole system is based on the distributed deployment of network, thus the server and client side's of system actual deployment position, can adjust as required, do not receive any restriction in principle, as long as can connect through LAN.

Below, will describe according to the RFID area dividing of the embodiment of the invention and the exemplary operative scenario of scope monitoring system with reference to figure 4 and Fig. 5.

Fig. 4 has described the situation that allows zone and prohibited area monitoring; As shown in the figure; When the personnel that wear the RFID chest card entered into certain RFID scope guarded region, the RFID fetch equipment had read personnel RFID information, sent related personnel's RFID information and zone of living in to server.Afterwards, server is permitted coupling through RFID information and zone of living in to these personnel, is judged as to be prohibited from entering, and after receiving this differentiation result, sound and light alarm equipment is reported to the police, and the client of remote monitoring is simultaneously also received relevant monitor message.

Fig. 5 has described the instance that allows the log in the zone.As shown in the figure, when the personnel that wear the RFID chest card entered into certain RFID scope guarded region, the RFID fetch equipment had read personnel RFID information, sent related personnel's RFID information and zone of living in to server, after differentiation allows, and the record entry time.

Subsequently, when the RFID fetch equipment in the scope guarded region no longer read this personnel RFID information, the RFID information that server is received further contrasted corresponding monitor message data structure for empty, judges that these personnel leave, the record time departure.

Afterwards, when the RFID fetch equipment in the scope guarded region reads this personnel RFID information once more, write down new entry time.

At last, after these personnel finally finished the work, leave guarded region, server was no longer received these personnel's RFID information, judged that these personnel leave, the record time departure.These data can supply further to add up these personnel's running time and work.

Thus it is clear that,, can the area to be monitored be divided into effectively " permission perform region " and " forbidding the perform region " through RFID area dividing of the present invention and scope monitoring system and method.And effectively monitor for getting into these regional personnel.

Simultaneously, in the guarded region that is divided into " permission perform region ", RFID area dividing of the present invention and scope monitoring system and method can be monitored wherein staff's duty in real time, thereby have significantly improved the security of system.

Here, accomplish automatically by system for control area division and monitoring, managerial personnel are through the Terminal Server Client situation in the guarded region easily, thereby have improved the user convenience degree.

Claims

1. RFID area dividing and scope monitoring system, it comprises:

One or more RFID antennas, it is set in the middle of the scope that need divide and monitor, continues transmitting RF ID signal, and receives the signal that the reflection object of RFID signal in monitoring range returned;

One or more separators; Reflect the RFID signal that the RFID antenna emits through it; Make this signal that reflects leave back, the zone decay rapidly of being divided by separator, wherein, the separator that each RFID antenna is corresponding with it limits the scope in the zone of being divided; And in this division and monitoring range, the signal of being launched by this RFID antenna keeps certain intensity;

Information read device, it reads the information of carrying in the signal that reflects of one or more RFID antennas receptions.

2. RFID area dividing as claimed in claim 1 and scope monitoring system, wherein, these one or more separators are the equipment frames itself in the machine room, or the artificial metal spacer that is provided with.

3. RFID area dividing as claimed in claim 1 and scope monitoring system, it further is connected to peripheral processor, so that the information that is read by information read device is analyzed and handled.

4. RFID area dividing and scope method for supervising, it comprises:

Transmit by the RFID antenna and to wait to divide and monitoring range, and receive the signal that the reflection object of signal in this division and monitoring range launched returned with covering;

Reflect by the signal of separator for the emission of RFID antenna; So that this signal that reflects is leaving back, the zone decay rapidly of being divided by separator; Wherein, The separator that each RFID antenna is corresponding with it limits the scope in the zone of being divided, and in this division and monitoring range, the signal of being launched by this RFID antenna keeps certain intensity;

Read the information in the signal that the RFID antenna receives, to detect the RFID label in the zone of this division;

Rule of judgment according to storage is in advance monitored this division and monitoring range.

5. method as claimed in claim 4, wherein, this separator is the equipment frame itself in the machine room, or the artificial metal spacer that is provided with.

6. method as claimed in claim 4, wherein, the Rule of judgment that this monitoring step comprises RFID label that in the zone of this division, detects and storage in advance compares, to confirm the legitimacy of this RFID label in the zone of this division.

7. method as claimed in claim 4, wherein, through the scope that the zone of division is set according to the threshold value of RFID channel attenuation degree after reflection is set differently.

8. method as claimed in claim 6 wherein, when in judging this RFID label zone in this division, being legal, writes down time that this RFID label occurs and the time of leaving in the zone of this division.

9. method as claimed in claim 6 wherein, when in judging this RFID label zone in this division, being illegal, is alarmed.