CN102375963A - Rfid Reading Device - Google Patents
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- CN102375963A CN102375963A CN2011102383866A CN201110238386A CN102375963A CN 102375963 A CN102375963 A CN 102375963A CN 2011102383866 A CN2011102383866 A CN 2011102383866A CN 201110238386 A CN201110238386 A CN 201110238386A CN 102375963 A CN102375963 A CN 102375963A
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Abstract
The invention provides a RFID (Radio Frequency Identification Devices) reading device which can make electric-field strength capable of communicating with an RFID in good intensity work on whole periphery of a long-size body of a to-be-identified body and make appropriate electric field strength in a longitudinal direction of the long-size body work constantly. The RFID reading device is an RFID reading device installed on the long-size body of the to-be-identified body. The RFID reading device is provided with a radiator sending and receiving radio waves communicating with the RFID, and a cylindrical wave reflector disposed in the radiator and connecting with the long-size body in an inserting manner. A direction of inserting the long-size body is determined to be an X direction. A direction perpendicular with the X direction and connecting the radiator and the long-size body is determined to be a Y direction. A direction perpendicular to the X direction and the Y direction is determined to be a Z direction. A length on the Y direction form the radiator towards the long-size body to the radio wave reflector is shorter than 3/2 times of the radio wavelength. A length of the radio wave reflector on the Z direction is shorter than 2 times of the radio wavelength.
Description
Technical field
The present invention relates to be used to read the device of RFID (Radio Frequency Identification, based on the individual identification of electric wave), particularly relate to the reading device that is installed in the RFID on the long body.In addition, long body means that electric wire cable and conduit, pipe arrangement, conduit, rope etc. have the tectosome of very long structure at single direction.
Background technology
RFID is meant being recorded in individual identification information in the IC chip etc. through utilizing closely (being generally several cm～number m) radio communication being come exchange message of electric wave etc.Though RFID often is referred to as IC tag or RF label, they is referred to as RFID here.In addition, in the explanation of patent documentation etc., the employed term of the former state record document then.
In patent documentation 1, disclose and in the insulator of electric wire cable, imbedded this technology of IC tag with nonvolatile memory.Can know according to patent documentation 1; The information that is write through reading in the nonvolatile memory by means of the electric coupling effect of having used the information reader from the outside is even if then also can confirm the information relevant with the electric wire cable such as identification marking with the noncontact mode in the middle part of electric wire cable.In addition, IC tag both can along the length direction of electric wire cable linearly shape be configured, also shape is configured in the shape of a spiral.
In patent documentation 2, disclose a kind of wireless communication system, it has: the interrogator antenna of sending signal; Reflect the roughly elliptic radio wave reflecting plate of above-mentioned signal; Can receive above-mentioned signal and at least can be and the transponder that communicates between the interrogator via above-mentioned roughly elliptic radio wave reflecting plate.Can know that according to patent documentation 2 the elliptic radio wave reflecting plate just can make the focus area of signal gathering in this reflecting plate through using roughly, and can prevent the scattering of stop signal, need not strengthen radiation and communicate by letter electric power and effectively utilize signal.
The prior art document:
Patent documentation 1: TOHKEMY 2003-203527 communique
Patent documentation 2: TOHKEMY 2003-283365 communique
Summary of the invention
Because patent documentation 1 is the invention of electric wire cable, so do not consider the position relation of IC tag (RFID) and information reader.For example, being in RFID and not having under the direct situation (RFID is positioned at the situation of opposition side etc. across the conductor (that is electric wave reflector) of electric wire cable), just worry that communicating by letter of RFID and information reader will become difficult facing to this position relation of information reader.
Be directed to this, directly can also do not carried out excellent communications facing to interrogator antenna (information reader) even if the wireless communication system of being put down in writing in the patent documentation 2 expects RFID.If think that in patent documentation 2 electromagnetic reflective representation and reflection of light are that the situation of identical movement then can also realize such as the such effect of put down in writing really.But generally speaking under electromagnetic situation, if the different a plurality of electromagnetic waves of travel path arrive acceptance points (multipath), then separately phase shifting and have weak relaxation phenomenon arranged by force.Thereby the information that RFID partly takes place is read the zone of difficulty or the zone that can't read.
And then; The electromagnetic field near field (general below the wavelength degree distance) with the inversely proportional electrostatic field of the cube of distance and with the inversely proportional induction field of the quadratic power of distance be the overriding factor, demonstrate the character of the electromagnetic field (with the inversely proportional electromagnetic wave of distance) that is different from the far field.That is, in the wireless communication system that patent documentation 2 is put down in writing, have electric wave and not necessarily concentrate such problem comparably with optical path.
On the other hand, in order to read in the id information of RFID, need utilize electromagnetic wave to the RFID supply capability so that the IC chip moves, and the IC chip is moved till the id information that the IC chip is replied all reads in.Here; Under the situation that RFID moves with respect to the information reader, in the time of in through aforementioned decay environment,, id information moves to the low zone of electric field intensity before all reading in; The IC chip will stop, and id information will take place the result can not read such problem.
Therefore; One object of the present invention is to provide a kind of RFID reading device; Even if also can carry out excellent communications (in other words, can make the electric field intensity that can read intensity occur in the full week of long body) with the RFID that is configured in from the position that the electric wave that shines as the front that is identified the long body of body can't arrive.In addition; Another object of the present invention is to provide a kind of RFID reading device; Even if under situation about moving, also can guarantee call duration time (in other words, the electric field intensity that can read intensity being occurred on the length direction of this long body continuously) fully with RFID as the long body that is identified body.
A technical scheme of the present invention has following characteristic in order to achieve the above object.
A kind of reading device that is installed in as the RFID on the long body that is identified body, it possesses: the radiator of the electric wave that transmitting-receiving and above-mentioned RFID communicate; And the electric wave reflector of the tubular of built-in above-mentioned radiator and slotting logical above-mentioned long body; Establish the direction of inserting logical above-mentioned long body be the x direction, with this x direction quadrature and the direction that links above-mentioned radiator and above-mentioned long body be the y direction, with the direction of this x direction and this y direction quadrature be under the situation of z direction; Begin towards the length of above-mentioned long body to the above-mentioned y direction of above-mentioned electric wave reflector 3/2 times of weak point than the wavelength of above-mentioned electric wave from above-mentioned radiator, the length of the above-mentioned z direction of above-mentioned electric wave reflector is shorter than the twice of the wavelength of above-mentioned electric wave.
According to the present invention, a kind of RFID reading device can be provided, even if also can carry out excellent communications with the RFID that is configured in from the position that the electric wave that shines as the front that is identified the long body of body can't arrive.In addition, a kind of RFID reading device can also be provided, even if under situation about moving, also can guarantee the call duration time with RFID fully as the long body that is identified body.
Description of drawings
Fig. 1 is the synoptic diagram that one of the electric wire cable example of RFID has been installed in expression, (a) is oblique view, (b) is one of cross-sectional view example, (c) is another example of cross-sectional view.
Fig. 2 is the floor map of one of one of expression RFID example and the RFID band that uses it example.
Fig. 3 is the illustraton of model of RFID reading device used in the electromagnetic field simulation, (a) is oblique view, (b) is cross-sectional view (figure that observes from the x direction), (c) is longitudinal section (figure that observes from the z direction).
Fig. 4 is the electromagnetic field simulation result's that on the transversal section shown in Fig. 3 (b), observes a example; Wavelength X with respect to electric wave; (a) be the result of " d=w=(1/2) λ "; (b) being the result of " d=w=(5/6) λ ", (c) is the result of " d=w=λ ", (d) is the result of " d=w=(3/2) λ ".
Fig. 5 is fixed into " d=(5/6) λ " and the example that makes the electromagnetic field simulation result of z direction length " w " when changing; Wavelength X with respect to electric wave; (a) be result's (that is identical) of " w=(5/6) λ " with Fig. 4 (b); (b) being the result of " w=λ ", (c) is the result of " w=(3/2) λ ", (d) is the result of " w=2 λ ".
Fig. 6 is fixed as " d=(5/6) λ " and the example that makes the electromagnetic field simulation result that x direction length " h " observes when changing on the longitudinal section shown in Fig. 3 (c); Wavelength X with respect to electric wave; (a) be the result of " h=(5/6) λ "; (b) being the result of " h=(5/4) λ ", (c) is the result of " h=(5/2) λ ", (d) is the result of " h=(10/3) λ ".
Electromagnetic field simulation result's when Fig. 7 is the RFID reading device that the electric wire cable is inserted lead in Fig. 6 (b) and Fig. 6 (c) example; (a) be to make the electric wire cable insert the result when leading on the central shaft of Fig. 6 (b); (b) be to make the electric wire cable insert the result when leading on the central shaft of Fig. 6 (c); Result when (c) being the position that the electric wire cable is inserted lead in the central shaft of slip chart 6 (b), the result when (d) being the position that the electric wire cable is inserted lead in the central shaft of slip chart 6 (c).
Fig. 8 is the synoptic diagram of the electric wave reflector of the RFID reading device involved in the present invention shape example of observing from the x direction; (a) be the situation of diamond shape; (b) be that the part of quadrilateral peripheral direction is the situation of this shape of open state, a part that (c) is the elliptic arc peripheral direction is the situation of this shape of open state.
Fig. 9 is the oblique view of one of the related RFID reading device of expression the present invention the 2nd embodiment example, (a) is the state of opening the electric wave reflector of tubular, (b) makes long body insert the state that leads to and close the electric wave reflector of tubular.
Figure 10 is the oblique view of one of the related RFID reading device of expression the present invention the 3rd embodiment example.
Figure 11 is the longitudinal section synoptic diagram of the related RFID reading device of the present invention's the 3rd embodiment, (a) is that guide member is the example of guide plate, (b) is that guide member is the example of packing material.
Figure 12 A is another routine oblique view of the related RFID reading device of expression the present invention the 3rd embodiment.
Figure 12 B is the oblique view of an other example of the related RFID reading device of expression the present invention the 3rd embodiment.
Figure 13 is the oblique view of one of the related RFID reading device of expression the present invention the 4th embodiment example.
Figure 14 is the synoptic diagram of one of manufacturing installation manufacturing process example of the electric wire cable of the built-in RFID of expression.
Figure 15 is the synoptic diagram of example of stapling machine of the electric wire cable of the built-in RFID of expression.
Description of reference numerals
10: the electric wire cable; 1: conductor core wire; 2: insulation course; 3: the protective covering layer; 4:RFID; The 41:IC chip; 42: antenna; 5: banding substrate; The 6:RFID band; 20,30,40,45,46,50:RFID reading device; 21,211,212: radiator; 22,221,222: electric wave reflector; 223: hinge; The 23:RF cable; 24: keep using handle; 25: guide member; 26: the hole; 251: guide plate; 252: packing material; 253: deflector roll; 254: as the face that is provided with of benchmark; 27: coupling component; 28: divider; The 29:RFID reader; The 121:RFID band inserts device; 122: protective covering layer processing machine; 123:PC; The 124:ID information database; 125: scrambler; 126: bobbin winoler (bobbin); 131: the cable cutter.
Embodiment
Below, with reference to accompanying drawing on one side with regard to involved in the present invention embodiment describe on one side.Wherein, the present invention is not limited to cited embodiment here, and combination and improvement can suit in the scope that does not change main spirit.
Such as previously mentioned, RFID reading device involved in the present invention is a kind of reading device that is installed in as the RFID on the long body that is identified body, and it possesses: the radiator of the electric wave that transmitting-receiving and above-mentioned RFID communicate; And built-in above-mentioned radiator and insert the electric wave reflector of logical tubular by above-mentioned long body; Establish by above-mentioned long body insert logical direction be the x direction, with this x direction quadrature and the direction that links above-mentioned radiator and above-mentioned long body be the y direction, with the direction of this x direction and this y direction quadrature be under the situation of z direction; Begin towards the length of above-mentioned long body to the above-mentioned y direction of above-mentioned electric wave reflector 3/2 times of weak point than the wavelength of above-mentioned electric wave from above-mentioned radiator, the length of the above-mentioned z direction of above-mentioned electric wave reflector is shorter than the twice of the wavelength of above-mentioned electric wave.
In addition, the present invention can apply such as following improvement and change in the related RFID reading device of foregoing invention.
(1) shape of above-mentioned electric wave reflector is viewed as quadrilateral from above-mentioned x direction.
(2) shape of above-mentioned electric wave reflector is observed from above-mentioned x direction, and at least a portion has circular shape, oval arc shape or elliptic arc shape.
(3) shape of above-mentioned electric wave reflector is observed from above-mentioned x direction, and the part of peripheral direction is open state (part of peripheral direction does not have the state of the part shortcoming of closed state, peripheral direction).
(4) above-mentioned electric wave reflector has the open-close structure that on above-mentioned x direction, carries out folding.
(5) guide member and the above-mentioned electric wave reflector that are used to locate above-mentioned long body are provided with integratedly.
(6) the guide sections part is to be equipped on the both ends of above-mentioned tubular electric wave reflector and to have the guide plate of being inserted logical hole by above-mentioned long body.
(7) the guide sections part is to be equipped on the inside of above-mentioned tubular electric wave reflector and to have the packing material of being inserted logical columned hole by above-mentioned long body.
(8) guide member that is used to locate above-mentioned long body separates with above-mentioned electric wave reflector and is provided with, and guide sections part and above-mentioned electric wave reflector are fixed in the face that is provided with as benchmark respectively.
(9) above-mentioned radiator sets a plurality of along above-mentioned x direction.
(10) be characterized as and used read method above-mentioned arbitrary RFID reading device, that be installed in the RFID on the long body.
Below, the present invention is described in more detail.In addition, describe, also can obtain same effect at other long body (for example, conduit, pipe arrangement, conduit, rope etc.) though enumerate the electric wire cable as one of long body example in this manual.In addition, additional phase isolabeling and omit the explanation of repetition on the parts of same position.
At first, just summarize as the RFID that is identified the electric wire cable of body and be installed on them.Fig. 1 is the synoptic diagram that one of the electric wire cable example of RFID has been installed in expression, (a) is oblique view, (b) is one of cross-sectional view example, (c) is another example of cross-sectional view.As shown in Figure 1, electric wire cable 10 is formed with insulation course 2 in the periphery of conductor core wire 1, and is formed with protective covering layer 3 in its periphery.RFID 4 roughly equally spaced imbeds (with reference to Fig. 1 (a)) on the length direction of electric wire cable 10, be configured in insulation course 2 directly over the middle part (with reference to Fig. 1 (c)) of (with reference to Fig. 1 (b)) or protective covering layer 3.In addition, conductor core wire 1 sometimes is a single-core line, sometimes is the one-tenth strand of a plurality of conductors.In addition, insulation course 2 sometimes forms with simple layer with protective covering layer 3, sometimes with more than 3 layers and constitute.
Fig. 2 is the floor map of one of one of expression RFID example and the RFID band that uses it example.As shown in Figure 2, RFID 4 is employed in the structure that connected antenna 42 on the IC chip 41 and (sometimes is referred to as embolus: inlet).RFID with 6 for example RFID 4 roughly equally spaced paste with respect to banding substrate 5 and form.In RFID 4, antenna 42 with read electric wave and carry out resonance and electric power takes place, and to IC chip 41 supply capabilities.In IC chip 41, utilize the electric power supplied with that IC is moved, the id information of reading in advance to be write down etc., and utilize 42 pairs of readers of antenna to reply once again.
Here, because RFID 4 (perhaps RFID is with 6) is embedded in protective covering layer 3, so only if protective covering layer 3 is transparent, otherwise just can't confirm the position of RFID 4 from the outside.In addition, such as previously mentioned, under the direct situation facing to reader of RFID 4 (for example, being positioned under the situation of opposition side across conductor core wire 1 (being electric wave reflector) RFID 4), electric power supply itself will become difficult in RFID reading device in the past.Therefore, people expect consumingly can with the location independent of RFID 4 the RFID reading device that communicates.
(the 1st embodiment of the present invention)
Such as previously mentioned, electric wave used among the RFID the phenomenon equal with reflection of light can not occur.Thereby, carried out the electromagnetic field simulation for the size regulation of studying RFID reading device (particularly electric wave reflector).Fig. 3 is the illustraton of model of RFID reading device used in the electromagnetic field simulation, (a) is oblique view, (b) is cross-sectional view (figure that observes from the x direction), (c) is longitudinal section (figure that observes from the z direction).In addition, in order to help to understand, expression is as the electric wire cable 10 that is identified body in oblique view.
As shown in Figure 3, RFID reading device 20 possesses: the radiator 21 of receiving and dispatching and be installed in the electric wave that the RFID 4 on the electric wire cable 10 communicates; Built-in radiator 21 and insert logical tubular electric wave reflectors 22 by electric wire cable 10.In Fig. 3, electric wave reflector 22 is by face (A)-(B)-(F)-(E), face (B)-(C)-(G)-(F), face (C)-(D)-(H)-(G) and these 4 tubular rectangular parallelepipeds of forming of face (D)-(A)-(E)-(H).That is, face (A)-(B)-(C)-(D) and face (E)-(F)-(G)-(H) are for inserting the peristome of live wire cable 10.Radiator 21 is in above-mentioned 4 the closed space, is configured in and the central part of face (A)-(B)-(F)-(E) position apart from t.In addition, in this manual, electric wire cable 10 is inserted logical directions be defined as the x direction, will and link radiator 21 and the direction of electric wire cable 10 is defined as the y direction, will be defined as the z direction with the direction of this x direction and this y direction quadrature with this x direction quadrature.In addition; To be designated as " d " (that is, from the distance of radiator 21 to face (C)-(D)-(H)-(G)) towards the y of electric wire cable 10 to electric wave reflector 22 direction length from radiator 21; The z direction length of electric wave reflector 22 is designated as " w ", the x direction length of electric wave reflector 22 is designated as " h ".
Even under the not direct situation of the RFID 4 of electric wire cable 10 (for example the conductor core wire 1 (that is electric wave reflector) across electric wire cable 10 is positioned under the situation of opposition side) facing to radiator 21; Also realize excellent communications, just need insert logical zone (the central shaft zone of tubular electric wave reflector 22) and generate the strong zone of electric field intensity with the mode of surrounding 10 full weeks of electric wire cable at electric wire cable 10.Utilize the electromagnetic field simulation that the size condition that satisfies this requirement is studied.In addition, radiator 21 is disposed at and the central part of face (A)-(B)-(F)-(E) position apart from t=4mm as half-wave doublet antenna.The frequency of in addition, establishing the electric wave that communicates with RFID 4 is a 2.45GHz (wavelength X=122.4mm).
Fig. 4 is the electromagnetic field simulation result's that on the transversal section shown in Fig. 3 (b), observes a example; Wavelength X with respect to electric wave; (a) be the result of " d=w=(1/2) λ "; (b) being the result of " d=w=(5/6) λ ", (c) is the result of " d=w=λ ", (d) is the result of " d=w=(3/2) λ ".In addition, level line is represented the intensity of electric field intensity, electric field intensity be greatly near mark H.
In Fig. 4 (a)～Fig. 4 (c), learn in the central shaft zone of tubular electric wave reflector 22 to generate the strong zone of electric field intensity that the full week at electric wire cable 10 between RFID 4 and the radiator 21 can be carried out excellent communications.On the other hand, learn that the zone that then electric field intensity is strong is divided into a plurality of if become the condition of Fig. 4 (d) on the y direction of principal axis.In the case, if RFID 4 through near between the trough of electric field intensity, then can expect and become difficulty and undesirable of communicating by letter of RFID 4.Preferably be at least " d＜(3/2) λ " towards the y of electric wire cable 10 to electric wave reflector 22 direction length according to these results are just very clear from radiator 21.In addition, though even if not shownly confirm " d=w＜(1/2) λ ", in the central shaft zone of tubular electric wave reflector 22 the very big zone of an electric field intensity only takes place and the greatly separation in zone does not take place.That is, on d and w, do not have a special lower limit, suit to set according to the external diameter that is identified body and get final product (for example consider to follow in being identified body and insert the vibration of leading to, be made as more than the twice of the external diameter that is identified body).
Fig. 5 is the example that is fixed as " d=(5/6) λ " and makes the electromagnetic field simulation result of z direction length " w " when changing; Wavelength X with respect to electric wave; (a) be result's (promptly identical) of " w=(5/6) λ " with Fig. 4 (b); (b) being the result of " w=λ ", (c) is the result of " w=(3/2) λ ", (d) is the result of " w=2 λ ".At Fig. 5 (a)～Fig. 5 (c), learn in the central shaft zone of tubular electric wave reflector 22 to generate the strong zone of electric field intensity, can be between RFID 4 and the radiator 21 in the full Zhou Jinhang excellent communications of electric wire cable 10.On the other hand, learn that the zone that then electric field intensity is strong is divided into three on the z of electric wave reflector 22 direction if become the condition of Fig. 5 (d).In the case, if RFID 4 through the zone a little less than the electric field intensity that produces between these troughs 23 (with dashed lines institute area surrounded), then can expect to become difficult and undesirable with communicating by letter of RFID 4.Just very clear according to these results: the z direction length of electric wave reflector 22 preferably is at least " w＜2 λ ".
Fig. 6 is the example that is fixed as " d=(5/6) λ " and makes the electromagnetic field simulation result that x direction length " h " observes when changing on the longitudinal section shown in Fig. 3 (c); Wavelength X with respect to electric wave; (a) be the result of " h=(5/6) λ "; (b) being the result of " h=(5/4) λ ", (c) is the result of " h=(5/2) λ ", (d) is the result of " h=(10/3) λ ".In Fig. 6 (a)～Fig. 6 (b), learn in the central shaft zone of tubular electric wave reflector 22 to generate a strong zone of electric field intensity that the full week at electric wire cable 10 between RFID 4 and the radiator 21 can be carried out excellent communications.On the other hand, learn that the zone that then electric field intensity is strong is divided into more than two if become the condition of Fig. 6 (c)～Fig. 6 (d) on the x of electric wave reflector 22 direction.
Here, even if under the condition of Fig. 6 (c)～Fig. 6 (d), the zone that electric field intensity is strong still is present on the central shaft of tubular electric wave reflector 22.In addition, on one side on the x direction, move electric wire cable 10 and carry out on one side and the communicating by letter of RFID 4.Therefore, even if the zone a little less than having electric field intensity on the x of electric wave reflector 22 direction, RFID 4 also can follow in moving of electric wire cable 10 and through the strong zone of electric field intensity.But, such as in the aforementioned purpose the record, just need guarantee fully in the strong zone of electric field intensity and the call duration time of RFID 4.Thereby, the electromagnetic field simulation when carrying out 10 coexistences of electric wire cable.
Electromagnetic field simulation result's when Fig. 7 is the RFID reading device that the electric wire cable is inserted lead in Fig. 6 (b) and Fig. 6 (c) example; (a) be to make the electric wire cable insert the result when leading on the central shaft of Fig. 6 (b); (b) be to make the electric wire cable insert the result when leading on the central shaft of Fig. 6 (c); Result when (c) being the position that the electric wire cable is inserted lead in the central shaft of slip chart 6 (b), the result when (d) being the position that the electric wire cable is inserted lead in the central shaft of slip chart 6 (c).In Fig. 7 (a), learning can be in the full Zhou Jinhang excellent communications of electric wire cable 10 between RFID 4 and the radiator 21.At Fig. 7 (b), learn that the area extension that generally speaking electric field intensity is strong is to the length direction of electric wire cable 10 with in Fig. 6 (c), being merged into one through the strong zone of electric field intensity of separating.In addition; Shown in Fig. 7 (c), Fig. 7 (d); Even if learning to insert at electric wire cable 10 leads under the situation of the position of off-center axle, in the scope of the broadness of full week of electric wire cable 10 and length direction, also can carry out excellent communications between RFID 4 and the radiator 21.The result of Fig. 7 (c), Fig. 7 (d) mean and on the logical position of inserting of electric wire cable 10, have permission (even if for example electric wire cable 10 vibrating on certain degree also not can be in communication the generation problem).
Just very clear according to these results, do not have special restriction about the x direction length of electric wave reflector 22, through lengthening x direction length " h " just can be in the scope of the broadness of the length direction of electric wire cable 10 the strong zone of acquisition electric field intensity.Even if this just means that the translational speed that improves electric wire cable 10 also can guarantee the call duration time with RFID 4 fully, and makes the manufacturing speed of electric wire cable 10 and inspection speed improve (that is cost reduction).
Accept above electromagnetic field simulation result; The RFID reading device of above-mentioned size regulation is satisfied in making, carried out and in the shape of a spiral shape be installed in the electric wire cable 10 (communication experiment between the RFID 4 on the external diameter of the external diameter=4mm of conductor core wire 1, protective covering layer 3=8mm).Its result, having confirmed can be in the full Zhou Jinhang excellent communications (not having the communication of readout error) of electric wire cable 10 between RFID 4 and the radiator 21.
In addition, though be that the shape of 2.45GHz, electric wave reflector is viewed as tetragonal situation from the x direction and is illustrated with regard to the frequency of electric wave hereinbefore, the present invention is not limited to these.Confirmed separately, even if under other frequencies (for example 900MHz), also can obtain same result as the frequency of electric wave.In addition; Shape as the electric wave reflector of observing from the x direction; Confirmed separately; As long as satisfy the shape that the size block rule can also be other (for example observe at least the shape that has circular-arc, oval arcuation or oval arcuation in a part, perhaps observe an one of peripheral direction and be the shape of open state) from the x direction from the x direction.The shape example of excellent communications has been confirmed in expression in Fig. 8.Fig. 8 is the synoptic diagram of the electric wave reflector of the RFID reading device involved in the present invention shape example of observing from the x direction; (a) be the situation of diamond shape; (b) be that the part of quadrilateral peripheral direction is the situation of this shape of open state, a part that (c) is the elliptic arc peripheral direction is the situation of this shape of open state.
(the 2nd embodiment of the present invention)
Such as previously mentioned; RFID reading device involved in the present invention is considered following situation; Promptly imagine the isometric size body of electric wire cable as being identified body, and this situation of electric wave reflector that is difficult to that this long body is inserted and leads in tubular (for example this long body situation about having laid).The related RFID reading device of the 2nd embodiment just is suitable for this situation.
Fig. 9 is the oblique view of one of the related RFID reading device of expression the present invention the 2nd embodiment example, (a) is the state of opening the electric wave reflector of tubular, (b) is to make long body insert the state that leads to and close the electric wave reflector of tubular.Shown in Fig. 9 (a), in the related RFID reading device 30 of the 2nd embodiment, electric wave reflector 221,222 has through hinge 223 and connects, and carries out this open-close structure of folding along x direction (long body is inserted logical direction).In addition, shown in Fig. 9 (b), through electric wire cable 10 being sandwiched electric wave reflector 221, between 222 and close, can carrying out individual identification in the optional position of electric wire cable 10.Radiator 21 is connected to the RFID reader via RF cable 23.
Closing to fasten in the position that the position is set of separation point position of electric wave reflector 221,222 (opened and closed positions) and radiator 21 does not have special qualification, considers that the ease of use setting that suits with communicating by letter precision gets final product.In addition, configuration keeps with handle 24 (for example carry out under the situation of individual identification) preferably under the situation of handhold RFID reading device 30 in the laying place of electric wire cable 10.
(the 3rd embodiment of the present invention)
In order to realize the excellent communications of RFID 4 and radiator 21, as the 1st embodiment illustrated, configuration of wires cable 10 is so that it is very important through the strong regional this point of electric field intensity.In addition, carry out in the laying place of electric wire cable 10 under the situation such as individual identification, consider that also an operator is difficult to the situation that keeps electric wire cable 10 to carry out contraposition with RFID reading device 30 simultaneously.
Figure 10 is the oblique view of one of the related RFID reading device of expression the present invention the 3rd embodiment example.As shown in Figure 8, in the related RFID reading device 40 of the 3rd embodiment, the guide member 25 that is used for long body is positioned is provided with electric wave reflector 221,222 integratedly.On guide member 25, be provided for inserting the hole 26 of elongated size body.In addition, as the material of guide member 25, preferably, use reflection wave not and absorption of electromagnetic wave is few, specific inductive capacity is low material (fluororesin for example foams).
Figure 11 is the longitudinal section synoptic diagram of the related RFID reading device of the present invention's the 3rd embodiment, (a) is that guide member is the example of guide plate, (b) is that guide member is the example of packing material.The guide plate 251 that in Figure 11 (a), has the hole 26 of slotting live wire cable 10 is provided in the both ends of the electric wave reflector 221,222 of tubular.It is difficult with lax situation in the inside of electric wave reflector 221,222 that this is suitable for electric wire cable 10.The packing material 252 that in Figure 11 (b), has the columned hole 26 of slotting live wire cable 10 is configured in the inside of the electric wave reflector 221,222 of tubular.This is suitable for the situation that electric wire cable 10 is easy to relax in the inside of electric wave reflector 221,222.
Figure 12 A is another routine oblique view of the related RFID reading device of expression the present invention the 3rd embodiment.Shown in Figure 12 A, connect with coupling component 27 in the related RFID reading device 45 of the 3rd embodiment so that be used to keep, the deflector roll 253 and the electric wave reflector 22 of positioning wires cable 10 become one.This is that RFID reading device 45 is suitable for the example that " situation that electric wire cable 10 moves while the tension force that attaches certain degree " reaches " while the situation that reading device is moved read the RFID of the electric wire cable 10 that is fixed " etc.In addition, self-evident, can also use electric wave reflector in the RFID reading device 45 with the open-close structure as the 2nd embodiment.
On the other hand, on the manufacturing line of electric wire cable 10 etc., use the contraposition of electric wire cable 10 under the situation of RFID reading device also very important.Figure 12 B is the oblique view of an other example of the related RFID reading device of expression the present invention the 3rd embodiment.Shown in Figure 12 B; The RFID reading device 46 that the 3rd embodiment is related; Be used to keep, the deflector roll 253 and the electric wave reflector of positioning wires cable 10 left and be provided with in 22 minutes, deflector roll 253 is fixed in the face that is provided with 254 as benchmark respectively with electric wave reflector 22.This is the example that RFID reading device 46 is suitable for situation that electric wire cable 10 moves with linear velocity faster etc.
(the 4th embodiment of the present invention)
Such as previously mentioned, in the manufacturing line of electric wire cable etc.,, preferably, electric wire cable 10 is flowed with as quickly as possible linear velocity from reducing the viewpoint of manufacturing cost.On the other hand, on the communicating by letter of RFID 4 and radiator 21, need to a certain degree time.Thereby, as a method of guaranteeing of the raising that takes into account linear velocity and the precision of communicating by letter, just consider to use in x direction (inserting the direction of live wire cable 10) and go up long electric wave reflector.
Figure 13 is the oblique view of one of the related RFID reading device of expression the present invention the 4th embodiment example.Shown in figure 13, the related RFID reading device 50 of the 4th embodiment is equipped with a plurality of radiators 211,212 along the x direction of electric wave reflector 22.The RFID 4 of electric wire cable 10 (not shown) and radiator 211, the signal that communicates between 212 via have receiving-transmitting sides to the divider 28 of distribution mixed function be sent to RFID reader 29.
Through using a plurality of radiators, be that one situation is compared with radiator, can guarantee along the broad more radioactive area of the x direction of electric wave reflector 22, even just can construct the fast environment that the RFID read error can not take place yet of the linear velocity of electric wire cable 10.In addition, though the situation of two paster antennas as radiator 211,212 has been shown in Figure 13, the kind and the number of antenna be not limited to these.
(the 5th embodiment of the present invention)
The application examples of then, showing the RFID reading device involved in the present invention that preceding text are illustrated.Figure 14 is the synoptic diagram of one of manufacturing installation manufacturing process example of the electric wire cable of the built-in RFID of expression.Shown in figure 14, RFID inserts device 121 with 6 through the RFID band and is equipped on directly over the formed insulation course 2 of the periphery of conductor core wire 1.Then, form protective covering layer 3 through protective covering layer processing machine 122, and imbed RFID and be with 6.Hereto, electric wire cable 10 is pressed shaping.
Then, read manufacturing electric wire cable 10 individual identification information etc. and create databank of product.RFID reader 29 is the controllers that are used to read RFID, reads the individual identification information of electric wire cable 10 via RFID reading device 20 involved in the present invention according to the instruction of example PC123.At this moment, use scrambler 125 position (distance from the off) of instrumentation electric wire cable 10 simultaneously.Positional information integration with the individual identification information that is read and institute's instrumentation is registered in the id information database 124.Registered electric wire cable 10 is wrapped on the bobbin winoler 126 in id information database 124.
So RFID reading device involved in the present invention does not have RFID read errors such as skip owing to can carry out excellent communications with the configuration-independent ground of RFID, can construct high-precision id information database.In addition owing to do not have a RFID read error basically, so RFID read at interval with from the inconsistent situation of the positional information of scrambler 125 under, just can judge in the RFID that is imbedded break down (for example moving bad).
(the 6th embodiment of the present invention)
Other application examples of showing RFID reading device involved in the present invention.Figure 15 is the synoptic diagram of example of stapling machine of the electric wire cable of the built-in RFID of expression.Shown in figure 15, draw registered electric wire cable 10 id information database 124 from bobbin winoler 126.Simultaneously, read the individual identification information of electric wire cable 10, and contrast with id information database 124 via RFID reading device involved in the present invention 20 usefulness RFID readers 29.Result by with 124 contrasts of id information database is drawing desirable length part according to using cable cutter 131 to cut off electric wire cable 10 from the instruction of PC123.
Such as previously mentioned, the related RFID reading device of the application of the invention just can be constructed high-precision id information database.In addition, RFID reading device involved in the present invention be owing to can carry out excellent communications with the configuration-independent ground of RFID, so there is not RFID read error such as skip.Just can cut out electric wire cable 10 accurately according to these.
Claims (11)
1. one kind is installed in as the reading device that is identified the RFID on the long body of body, it is characterized in that possessing:
The radiator of the electric wave that transmitting-receiving and above-mentioned RFID communicate; And the electric wave reflector of the tubular of built-in above-mentioned radiator and slotting logical above-mentioned long body,
Establish the direction of inserting logical above-mentioned long body be the x direction, with this x direction quadrature and the direction that links above-mentioned radiator and above-mentioned long body be the y direction, with the direction of this x direction and this y direction quadrature be under the situation of z direction,
Begin towards the length of above-mentioned long body to the above-mentioned y direction of above-mentioned electric wave reflector 3/2 times of weak point from above-mentioned radiator than the wavelength of above-mentioned electric wave,
The length of the above-mentioned z direction of above-mentioned electric wave reflector is shorter than the twice of the wavelength of above-mentioned electric wave.
2. the RFID reading device of putting down in writing according to claim 1 is characterized in that:
The shape of above-mentioned electric wave reflector is a quadrilateral when above-mentioned x direction is observed.
3. the RFID reading device of putting down in writing according to claim 1 is characterized in that:
The shape of above-mentioned electric wave reflector has circular shape, oval arc shape or elliptic arc shape at least a portion when above-mentioned x direction is observed.
4. the RFID reading device of being put down in writing according to claim 2 or 3 is characterized in that:
The part of peripheral direction was an open state when shape of above-mentioned electric wave reflector was observed from above-mentioned x direction.
5. according to any RFID reading device of being put down in writing in the claim 1 to 4, it is characterized in that:
Above-mentioned electric wave reflector has the open-close structure that on above-mentioned x direction, carries out folding.
6. according to any RFID reading device of being put down in writing in the claim 1 to 5, it is characterized in that:
The guide member and the above-mentioned electric wave reflector that are used to locate above-mentioned long body are provided with integratedly.
7. the RFID reading device of putting down in writing according to claim 6 is characterized in that:
The guide sections part be equipped on above-mentioned tubular electric wave reflector both ends and have the guide plate in the hole of inserting logical above-mentioned long body.
8. the RFID reading device of putting down in writing according to claim 6 is characterized in that:
The guide sections part be equipped on above-mentioned tubular electric wave reflector inside and have the packing material in the columned hole of inserting logical above-mentioned long body.
9. according to any RFID reading device of being put down in writing in the claim 1 to 5, it is characterized in that:
The guide member and the above-mentioned electric wave reflector that are used to locate above-mentioned long body are provided with independently,
Guide sections part and above-mentioned electric wave reflector are fixed in the face that is provided with as benchmark respectively.
10. according to any RFID reading device of being put down in writing in the claim 1 to 9, it is characterized in that:
Above-mentioned radiator sets a plurality of along above-mentioned x direction.
11. a read method that is installed in the RFID on the long body is characterized in that: used any RFID reading device of being put down in writing in the aforesaid right requirement 1 to 10.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010187037A JP5152274B2 (en) | 2010-08-24 | 2010-08-24 | RFID reader |
| JP2010-187037 | 2010-08-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102375963A true CN102375963A (en) | 2012-03-14 |
| CN102375963B CN102375963B (en) | 2015-02-11 |
Family
ID=45794553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110238386.6A Expired - Fee Related CN102375963B (en) | 2010-08-24 | 2011-08-18 | Rfid Reading Device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5152274B2 (en) |
| CN (1) | CN102375963B (en) |
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| JP5261994B2 (en) * | 2007-06-19 | 2013-08-14 | 株式会社日立製作所 | Identification tag and cable identification system |
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| CN1310833A (en) * | 1998-07-24 | 2001-08-29 | 检查点系统有限公司 | RFID radio frequency identification system for detecting low power resonant tags |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP5152274B2 (en) | 2013-02-27 |
| JP2012049610A (en) | 2012-03-08 |
| CN102375963B (en) | 2015-02-11 |
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