CN103400166B - A kind of closing space-intensive Articla management system based on RFID and method - Google Patents
A kind of closing space-intensive Articla management system based on RFID and method Download PDFInfo
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 238000013507 mapping Methods 0.000 claims abstract description 19
- 239000007787 solid Substances 0.000 claims description 5
- 238000003491 array Methods 0.000 claims description 3
- 230000005672 electromagnetic field Effects 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims description 2
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Abstract
The invention discloses a kind of System and method for closing space-intensive Item Management based on RFID。This system includes: rfid interrogator, multiple aerial array, multiple multi-path antenna conversion equipment, processor unit, display unit, power supply, RFID。The method includes: initialize；Read write line read operation；Multiple aerial array opened successively by multi-path antenna conversion equipment；Aerial array is reading electronic labels ID in the way of time-sharing polling, and sends to processor unit；Processor unit is according to the corresponding relation between antenna number and the electronic tag ID read, obtain the mapping table between electronic tag ID and the antenna number of reality, and the position mapping table that it is built-in with processor unit is compared, process accordingly according to comparison result。The present invention can be carried out the article condition monitoring of internal identified article when being not switched on closing space, and can solve RFID and carry out the technological difficulties of intensive reading in the closed state。
Description
Technical field
The present invention relates to technical field of RFID, particularly relate to a kind of system and method intensive article put being managed in closing space utilizing REID。
Background technology
Under high density state, electromagnetic signal is easily subject to interference, and due to the electromagnetic spectrum distribution of rfid interrogator antenna distribution, it is easy to produce blind area, magnetic field, thus there is skip。For solving magnetic field blind zone problem, people generally adopt the mode increasing antenna amount, but so the reading speed of rfid interrogator will be affected, and the time of reading is longer, and cost can increase。
Currently available technology is but without carrying out the method for RFID dense reading for closing space and based on the method for intensive Item Management in the closing space of RFID。
In order to solve to carry out the management of the intensive article put, the such as management to the management of instrument in workbox, frock workpiece, and the management of the quantity of other intensive stacked items and location in closing space。The present invention proposes when closing that space article are intensive to be put, and the method for arranging of a kind of RFID antenna, a kind of antenna read method for improving reading efficiency and a kind of carrying out are closing the method that space carries out RFID item management。The present invention can so that when close space need not open and need not manually make an inventory, just be appreciated that whether interior items lacks, whether have not clear article interior, whether in information such as correct positions, thus achieving higher efficiency and higher reliability at lower cost。
Summary of the invention
The invention discloses a kind of closing space-intensive Articla management system based on RFID and method。Its objective is to realize when closing space and need not open and need not manually make an inventory, it is possible to learn whether interior items lacks, whether have not clear article interior, whether in information such as correct positions。
For achieving the above object, according to an aspect of the present invention, a kind of closing space-intensive Articla management system based on RFID is proposed, this system includes: rfid interrogator 101, multiple aerial array 103, multiple multi-path antenna conversion equipment 102, processor unit 104, display unit 105, power supply 106, RFID 107, wherein:
Described RFID 107 is installed on closes being managed on article in space；
Described aerial array 103 carries out the distribution of single or multiple lift according to solid space and antenna electromagnetism coverage in described closing space, it is full of the electromagnetic field closing space for being formed, to obtain the RFID signal in described closing space, and RFID signal is sent to described rfid interrogator 101；
The plurality of multi-path antenna conversion equipment 102 is placed in inner surface or the outer surface in described closing space, is connected with described rfid interrogator 101 and multiple aerial array 103, for a rfid interrogator is connected to multiple antenna as much as possible；
Described rfid interrogator 101 is placed in inner surface or the outer surface in described closing space, it is connected with described processor unit 104 and power supply 106, and be connected with described aerial array 103 by one or more multi-path antenna conversion equipments 102, for carrying out digital independent for described RFID 107, and the data read are sent to described processor unit 104；
Described power supply 106 is placed in inner surface or the outer surface in described closing space, and it is connected with described rfid interrogator 101, processor unit 104 and display unit 105, is used for providing power supply；
Described processor unit 104 is placed in inner surface or the outer surface in described closing space, and it is connected with described rfid interrogator 101 and power supply 106, carries out storage and comparing process for reading, for described rfid interrogator 101, the RFID data obtained；
Described display unit 105, described display unit 105 is placed in the outside in described closing space, it is connected with described processor unit 104 and power supply 106, and the internal information for the described closing space for receiving displays, and can be made directly command operation by touch screen。
According to a further aspect in the invention, it is also proposed that a kind of method utilizing described system that closing space-intensive article are managed, the method comprises the following steps:
Step 1, opening power also initializes, and the Item Information accurately should put in space is closed in write；
Step 2, rfid interrogator 101 starts to perform the read operation of the RFID being managed on article for being installed in described closing space；
Step 3, when described rfid interrogator 101 receives the query statement sent by processor unit 104, connected multiple aerial array 103 opened successively respectively by multi-path antenna conversion equipment 102, and distributes certain working time to each aerial array 103；
Step 4, aerial array 103 carries out the reading of RFID ID by the mode of time-sharing polling, aerial array 103 often reads a RFID ID, is just passed through rfid interrogator 101 and is sent in processor unit 104, until all of antenna is all opened and read；
Step 5, corresponding relation between the RFID ID that processor unit 104 reads according to numbering and this antenna of antenna, obtain the mapping table between RFID ID and the antenna number of reality, and the position mapping table that it is built-in with processor unit 104 is compared, process accordingly according to comparison result。
The invention has the beneficial effects as follows:
1) this patent can solve to carry out the management of intensive article in closing space RFID technique。Such as with the management of the management of instrument in workbox, frock workpiece, and the quantity of other intensive stacked items, orientation management。This patent can so that when closing space and need not open and need not manually make an inventory, it is possible to learn whether interior items lacks, whether have not clear article interior, whether in information such as correct positions；
2) antenna arrangement method that in the closing space of invention, RFID dense reads, it is possible to solve the magnetic field blind zone problem of rfid interrogator antenna distribution under intensive placement state, thus solving skip；
3) a kind of method carrying out RFID dense reading in closing space of invention adopts optimized algorithm, it is possible to making read write line when connecting multiple antennas and carrying out, work efficiency is the highest；
Accompanying drawing explanation
Fig. 1 is the closing space-intensive Articla management system schematic diagram based on RFID provided by the invention。
Fig. 2 is that monolayer antenna plane arranges schematic diagram according to an embodiment of the invention；
Fig. 3 is that each according to an embodiment of the invention layer antenna solid arranges schematic diagram。
Fig. 4 is that position between RFID and antenna maps schematic diagram according to an embodiment of the invention。
Fig. 5 is the method flow diagram closing space-intensive Item Management based on RFID provided by the invention。
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail。
Fig. 1 is the closing space-intensive Articla management system structural representation based on RFID provided by the invention, as shown in Figure 1, described system 100 includes: rfid interrogator 101, multiple aerial array 103, multiple multi-path antenna conversion equipment 102, processor unit 104, display unit 105, power supply 106, RFID 107, wherein:
Described RFID 107 is installed on closes being managed on article in space；
Described aerial array 103 carries out the distribution of single or multiple lift according to solid space and antenna electromagnetism coverage in described closing space, it is full of the electromagnetic field closing space for being formed, to obtain the RFID signal in described closing space, and RFID signal is sent to described rfid interrogator 101；
The plurality of multi-path antenna conversion equipment 102 is placed in inner surface or the outer surface in described closing space, is connected with described rfid interrogator 101 and multiple aerial array 103, for a rfid interrogator is connected to multiple antenna as much as possible；Wherein, can being concurrent working state between each multi-path antenna conversion equipment 102, multiple aerial arrays 103 that single multi-path antenna conversion equipment 102 connects be time-sharing work states；
Described rfid interrogator 101 is placed in inner surface or the outer surface in described closing space, it is connected with described processor unit 104 and power supply 106, and be connected with described aerial array 103 by one or more multi-path antenna conversion equipments 102, for carrying out digital independent for described RFID 107, and the data read are sent to described processor unit 104；
Described power supply 106 is placed in inner surface or the outer surface in described closing space, it is connected with described rfid interrogator 101, processor unit 104 and display unit 105, is used for utilizing one below or combination to provide power supply: rechargeable battery, solar panel, external power of alterating and direct current etc.；
Described processor unit 104 is placed in inner surface or the outer surface in described closing space, it is connected with described rfid interrogator 101, display unit 105 and power supply 106, carry out storage and comparing processes for reading, for described rfid interrogator 101, the RFID data that obtain, and the data after processing are sent to described display unit 105 display；
Described display unit 105 is placed in the outside in described closing space, and it is connected with described processor unit 104 and power supply 106, and the internal information for the described closing space for receiving displays, and can be made directly command operation by touch screen。
Wherein, when placing the antenna in the plurality of aerial array 103 according to solid space and antenna electromagnetism coverage, can such as select to place narrow antenna capable of adjusting angle in corner location, select to place wide angle antenna at marginal position, and select in centre position to place omni-directional。The concrete method for arranging of the antenna of described aerial array 103 is referred to shown in Fig. 2 and Fig. 3, and specifically, the layout of the antenna of described aerial array 103 needs to meet following rule:
1, the horizontal layout of same layer antenna is determined according to the size of the magnetic field radius R of individual antenna and electronic tag and density: with overlapping region, magnetic field more than 2 times of electronic label antenna length for foundation, determine centre distance L1 and the L2 between two antennas of the horizontal and vertical lie adjacent of same layer, should also be avoided the crossing center in adjacent antenna magnetic field simultaneously when putting and occur without null point, if there is null point, an antenna can be installed additional in the position that null point occurs；
2, the interval L of each layer antenna distance upper strata antenna is less than magnetic field diameter；
3, the span h putting interval H of each layer RFID 107 is As shown in Figure 3。
It addition, electromagnetic absorber 109 can be used between the surrounding in described closing space and every layer of aerial array 103 if desired to isolate, to form the electromagnetic space of specification。
Like this, each RFID 107 one or more antennas just and in aerial array 103 form a position mapping table, as shown in Figure 4:
When region residing for RFID 107 is individually positioned at A antenna magnetic field, this RFID forms mapping table with A antenna；When RFID is positioned at the intersection region of A antenna and B antenna, this RFID is collectively forming mapping table with A antenna and B antenna；When RFID is positioned at the intersection region of A antenna, B antenna and C antenna, this RFID is collectively forming mapping table with A antenna, B antenna and C antenna。
Fig. 5 is the method flow diagram based on the closing space-intensive Articla management system of RFID, closing space-intensive article being managed described in utilization provided by the invention, as it is shown in figure 5, said method comprising the steps of:
Step 1, opening power also initializes, and the Item Information accurately should put in space is closed in write；
Described initialization includes being previously written Item Title corresponding to the RFID ID of article, the RFID ID that be placed on the needs management closing interior volume in processor unit 104, the ID in affiliated closing space, affiliated closing name in a name space claim, close the position mapping table between numbering and RFID ID and each antenna of each antenna of arrangement in space；
Step 2, rfid interrogator 101 starts to perform the read operation of the RFID being managed on article for being installed in described closing space；
Step 3, when described rfid interrogator 101 receives the query statement sent by processor unit 104, connected multiple aerial array 103 opened successively respectively by multi-path antenna conversion equipment 102, and distributes certain working time to each aerial array 103；
Described rfid interrogator 101 connects multiple aerial array 103 by one or more multi-path antenna conversion equipments 102, can being concurrent working state between each multi-path antenna conversion equipment 102, multiple aerial arrays 103 that single multi-path antenna conversion equipment 102 connects be time-sharing work states；
Step 4, aerial array 103 carries out the reading of RFID ID by the mode of time-sharing polling, aerial array 103 often reads a RFID ID, is just passed through rfid interrogator 101 and is sent in processor unit 104, until all of antenna is all opened and read；
In this step, when a certain antenna carries out secondary owing to lacking a certain RFID ID or repeatedly reads, first in processor unit 104, the position at the general place of the RFID ID lacked is searched according to the position mapping table that this antenna is corresponding with described RFID ID, obtain and the antenna serial number N corresponding to described RFID ID, then open this antenna and be read out；
Step 5, corresponding relation between the RFID ID that processor unit 104 reads according to numbering and this antenna of antenna, obtain the mapping table between RFID ID and the antenna number of reality, and the position mapping table that it is built-in with processor unit 104 is compared, process accordingly according to comparison result；
Described step 5 further includes steps of
Step 51, judge that whether the quantity of received RFID ID is consistent with the quantity of preset RFID ID, if it is consistent, then enter step 53 and proceed next step calculating and contrast, if it is inconsistent, then illustrate there is skip phenomenon or have article to lack, enter step 52；
Step 52, check the logging of all antennas, if a certain antenna has been carried out the repetition read operation of at least twice, and the sum of RFID ID is still inconsistent with preset quantity, then illustrate that article there occurs that deficient phenomena enters step 53 really, if a certain antenna only there occurs a read operation, then return step 4 and re-start reading and the judgement of RFID ID；
Step 53, when the quantity through judging RFID is consistent with preset quantity or have been carried out more than at least twice repeating read after, processor unit 104 inquires about whether the position of RFID meets preset mapping table: if there being antenna to read non-article record RFID ID, then illustrate have unknown object to enter, reported to the police by display unit 105；If there being antenna to read the RFID ID within the scope of its electromagnetism non-, then illustrate that location dislocation occur in the article corresponding to this RFID ID, the current location of these article and/or the transmission of tram scope are displayed to display unit 105；If there is the RFID ID not read, then the article disappearance corresponding with this RFID ID is described, shows corresponding article missing information by display unit 105。
Particular embodiments described above; the purpose of the present invention, technical scheme and beneficial effect have been further described; it is it should be understood that; the foregoing is only specific embodiments of the invention; it is not limited to the present invention; all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention。
Claims (9)
1. the closing space-intensive Articla management system based on RFID, it is characterized in that, this system includes: rfid interrogator (101), multiple aerial array (103), multiple multi-path antenna conversion equipment (102), processor unit (104), display unit (105), power supply (106), RFID (107), wherein:
Described RFID (107) is installed on closes being managed on article in space；
Described aerial array (103) carries out the distribution of single or multiple lift according to solid space and antenna electromagnetism coverage in described closing space, it is full of the electromagnetic field closing space for being formed, to obtain the RFID signal in described closing space, and RFID signal is sent to described rfid interrogator (101)；
The plurality of multi-path antenna conversion equipment (102) is placed in inner surface or the outer surface in described closing space, it is connected with described rfid interrogator (101) and multiple aerial array (103), for a rfid interrogator is connected to multiple antenna as much as possible；
Described rfid interrogator (101) is placed in inner surface or the outer surface in described closing space, it is connected with described processor unit (104) and power supply (106), and be connected with described aerial array (103) by one or more multi-path antenna conversion equipments (102), for carrying out digital independent for described RFID (107), and the data read are sent to described processor unit (104)；
Described power supply (106) is placed in inner surface or the outer surface in described closing space, and it is connected with described rfid interrogator (101), processor unit (104) and display unit (105), is used for providing power supply；
Described processor unit (104) is placed in inner surface or the outer surface in described closing space, it is connected with described rfid interrogator (101) and power supply (106), carries out storage and comparing process for reading, for described rfid interrogator (101), the RFID data obtained；
Described display unit (105), described display unit (105) is placed in the outside in described closing space, it is connected with described processor unit (104) and power supply (106), internal information for the described closing space for receiving displays, and can be made directly command operation by touch screen；
Wherein, the layout of the antenna of described aerial array (103) needs to meet following rule:
1) horizontal layout of same layer antenna, is determined according to the size of the magnetic field radius R of individual antenna and electronic tag and density；
2), the interval L of each layer antenna distance upper strata antenna is less than magnetic field diameter；
3), the span h putting interval H of each layer RFID (107) is
2. system according to claim 1, it is characterized in that, being concurrent working state between each multi-path antenna conversion equipment (102), multiple aerial arrays (103) that single multi-path antenna conversion equipment (102) connects are time-sharing work states。
3. system according to claim 1, it is characterized in that, rule 1) particularly as follows: with overlapping region, magnetic field more than 2 times of electronic label antenna length for foundation, determine the centre distance between two antennas of the horizontal and vertical lie adjacent of same layer, should also be avoided the crossing center in adjacent antenna magnetic field simultaneously when putting and occur without null point, if there is null point, install an antenna additional in the position that null point occurs。
4. system according to claim 1, it is characterised in that use electromagnetic absorber (109) to isolate between surrounding and every layer of aerial array (103) in described closing space, to form the electromagnetic space of specification。
5. system according to claim 1, it is characterised in that each RFID (107) and the one or more antennas in aerial array (103) form a position mapping table。
6. the system utilized described in claim 1 is to closing the method that space-intensive article are managed, it is characterised in that the method comprises the following steps:
Step 1, opening power also initializes, and the Item Information accurately should put in space is closed in write；
Step 2, rfid interrogator (101) starts to perform the read operation of the RFID being managed on article for being installed in described closing space；
Step 3, when described rfid interrogator (101) receives the query statement sent by processor unit (104), connected multiple aerial array (103) opened successively respectively by multi-path antenna conversion equipment (102), and distributes certain working time to each aerial array (103)；
Step 4, aerial array (103) carries out the reading of RFID ID by the mode of time-sharing polling, aerial array (103) often reads a RFID ID, just passed through rfid interrogator (101) and be sent in processor unit (104), until all of antenna is all opened and read；
Step 5, corresponding relation between the RFID ID that processor unit (104) reads according to numbering and this antenna of antenna, obtain the mapping table between RFID ID and the antenna number of reality, and the position mapping table that it is built-in with processor unit (104) is compared, process accordingly according to comparison result。
7. method according to claim 6, it is characterized in that, the initialization in described step 1 includes being previously written Item Title corresponding to the RFID ID of article, the RFID ID that be placed on the needs management closing interior volume in processor unit, the ID in affiliated closing space, affiliated closing name in a name space claim, close the position mapping table between numbering and RFID ID and each antenna of each antenna of arrangement in space。
8. method according to claim 6, it is characterized in that, in described step 4, when a certain antenna repeatedly reads owing to lacking a certain RFID ID, first in processor unit (104), the position at the general place of the RFID ID lacked is searched according to the position mapping table that this antenna is corresponding with described RFID ID, obtain and the antenna serial number N corresponding to described RFID ID, then open this antenna and be read out。
9. method according to claim 6, it is characterised in that described step 5 further includes steps of
Step 51, judge that whether the quantity of received RFID ID is consistent with the quantity of preset RFID ID, if it is consistent, then enter step 53 and proceed next step calculating and contrast, if it is inconsistent, then illustrate there is skip phenomenon or have article to lack, enter step 52；
Step 52, check the logging of all antennas, if a certain antenna has been carried out the repetition read operation of at least twice, and the sum of RFID ID is still inconsistent with preset quantity, then illustrate that article there occurs that deficient phenomena enters step 53 really, if a certain antenna only there occurs a read operation, then return step 4 and re-start reading and the judgement of RFID ID；
Step 53, when the quantity through judging RFID is consistent with preset quantity or have been carried out more than at least twice repeating read after, whether the position of processor unit (104) inquiry RFID meets preset mapping table: if there being antenna to read non-article record RFID ID, then illustrate have unknown object to enter, reported to the police by display unit (105)；If there being antenna to read the RFID ID within the scope of its electromagnetism non-, then illustrate that location dislocation occur in the article corresponding to this RFID ID, the current location of these article and/or the transmission of tram scope are displayed to display unit (105)；If there is the RFID ID not read, then the article disappearance corresponding with this RFID ID is described, shows corresponding article missing information by display unit (105)。
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