Patent Application
20120274453
The present invention relates to an upright type apparatus for charging wireless IC tags, particularly to an apparatus for charging wireless IC tags, to which various data required for quality management are written, or from which the data having been written to wireless IC tags are read out, prior to the charging of wireless IC tags by means of radio communication, to an object, such as a kneaded material prepared in any of liquid, viscous or semi-solid state, after writing/reading-out said data to/from said wireless IC tags.
In concrete constructs, for example, it is known that wireless IC tags, to which various information on a product have been written in view of investigating strength against earthquake and/or verifying the history of constructions, are incorporated to concrete constructs, so as to manage the quality of the concrete, the history of the constructions, etc. based on a management system using said wireless IC tags. Further, the quality management in which wireless IC tags are used has been desired in view of traceability not only for concrete constructs but also daily necessaries such as resin-molded commodities.
For preparations, such as unhardened concrete and thermoplastic resins, which assume any of liquid, viscous or semi-solid state during the manufacturing process, said wireless IC tags can be utilized for product management for the individual preparations by writing various data to the wireless IC tags beforehand, charging the wireless IC tags having been written with the data to an unhardened preparation, and then enclosing those wireless IC tags inside the preparation, and writing/reading-out data to/from the wireless IC tags enclosed inside the hardened preparation by means of radio communication. Moreover, because the wireless IC tags are enclosed inside the preparations, there is such an advantage that the subsequent step of embedding or incorporating wireless IC tags to the preparations is not required.
On the other hand, a method of quality management for concrete constructs, in which wireless IC tags are charged to unhardened concrete received in a concrete mixer mounted on a vehicle, and information on the manufacturing of unhardened concrete is written to the incorporated wireless IC tags at the time of casting said unhardened concrete to thereby build a concrete construct provided with various information at the time of manufacturing (Patent Document 1). Still, a quality management system, in which the quality management of concrete is implemented by using wireless IC tags having been incorporated to unhardened concrete during the manufacturing process, and unhardened concrete containing wireless IC tags are disclosed (Patent Document 2).
These systems are structured in such a procedure that unhardened concrete is mixed/kneaded with wireless IC tags, information on the unhardened concrete and the casting thereof, or information as to a concrete construct built after casting the unhardened concrete is written to the wireless IC tags, and reading out the said data upon requirement to thereby implement the quality management of the concrete construct. In those documents, however, the means for writing data to wireless IC tags and the constitution of the apparatus for charging wireless IC tags are not clearly disclosed.
In the said quality management system for concrete constructs described above, in which the conventional wireless IC tags are mixed to unhardened concrete, it is required to firmly and accurately write predetermined data to wireless IC tags in the charging step and to prevent the wireless IC tags from being clogged due to appearance of power dust inside the charging apparatus, particularly at the entrance portion thereof. However, the conventional apparatus for charging wireless IC tags of the type as described above is configured to feed wireless IC tags to a data writing/reading-out unit while simply giving vibration so that the wireless IC tags supplied from a hopper should not be clogged. As a result, the orientation of wireless IC tag faces whereto data is written cannot be aligned, causing errors in writing data to wireless IC tags.
Further, said type of the conventional apparatus is configured to drop wireless IC tags by virtue of gravitation from the charging apparatus to the object. Consequently, there is such a problem with the apparatus that dust of cement, which is the object for charging, could flow into air to thereby cause clogging at an outlet of the charging apparatus, and that the charging apparatus is required to be positioned directly over a mixing vessel containing the object for charging, or to be set in the close vicinity of a mixing vessel even though a pipe for feeding/dropping wireless IC tags is used.
In general, mixing/kneading of unhardened concrete is implemented by measuring sand, gravel or crushed rocks, water, etc., charging/kneading them to/in a mixing vessel, and feeding the mixture into a mixer mounted on a vehicle, and these serial operations must be completed within 40 minutes. Therefore, all operations including measuring the components of unhardened concrete, writing data to IC tags and charging IC tags must be done within 15 to 25 seconds based on the reverse calculation. Since an incorporation of wireless IC tags to a mixing vessel is required to be completed quickly, it is so required that no adverse effect is exerted to a normal numbers of wireless IC tags in total to be charged to unhardened concrete even though errors in writing data may occur.
Therefore, it is an object of the present invention to provide an apparatus for charging wireless IC tags of the upright type, which requires a less grounding area, may be set at a free position away from a mixing vessel to be used for mixing/kneading wireless IC tags with the object for charging, can charge a plurality of wireless IC tags over a wide range above the mixing vessel, and can charge a number of wireless IC tags within a short time.
It is another object of the present invention to provide an apparatus for charging wireless IC tags of the upright type, which can be switched on/off the apparatus remotely and by only designated persons, and the charging operation of which can be monitored from places other than the operating site.
It is still another object of the present invention to provide an apparatus for charging wireless IC tags of the upright type, which can work continuously without affecting the total amount of wireless IC tags to be charged, even if a part of the apparatus developed trouble, by unitizing the wireless IC tag charging mechanism section, the data writing/reading-out section, the writing error detection section, and the defective product distribution section, individually, and positioning those units in a vertical direction.
An upright type apparatus for charging wireless IC tags according to the present invention comprises a vibration alignment unit for vibrating wireless IC tags to align them, a separating unit for separating the wireless IC tags fed in a aligned state into one by one to drop them to a vertically-dropping passage, a plurality of IC tag processing unit arranged along the vertically-dropping passage at the upper and lower sides, IC tag pressure feeding unit arranged to the lateral side of each of said units, defective IC tag reception section provided to the bottom part of the apparatus, and a control unit for controlling the operations of said units, respectively, and is characterized in that said IC tag processing unit comprises a stopper section for opening/blocking said vertically-dropping passage, a distribution section arranged beneath the stopper section and adapted to receive wireless IC tags on the vertically-dropping passage to distribute them so that they are pushed to the IC tag pressure feeding section and are dropped to an area beneath the vertically-dropping passage, a data writing section arranged at the position of the stopper section for writing data to wireless IC tags on the stopper section by means of radio communication, and a data reading-out section arranged at the position of said distribution section for reading out data written in wireless IC tags from said wireless IC tags being received in the distribution section by means of radio communication.
Besides, an embodiment according to the present invention is characterized in that, among said plurality of IC tag processing units, the units other than the units which are processing wireless IC tags are maintained in the opened condition.
A still another embodiment according to the present invention is characterized in that said control unit controls the operations of processing wireless IC tags are implemented in series by the IC tag processing units in order of proceeding from the unit locating at the upper stage to the unit locating at the lower stage.
A still another embodiment according to the present invention is characterized in that said data reading-out section may also function as said defective IC tag detection means for detecting errors in writing data to the wireless IC tags.
A still another embodiment according to the present invention is characterized in that the defective IC tag reception section provided to the lower section of the apparatus is disposed beneath the vertically-dropping passage, and that the defective IC tags in which an error in writing data has been detected drop from the distribution section to the vertically-dropping passage and are then received in said defective IC tag reception section.
A still another embodiment according to the present invention is characterized in that said object for charging wireless IC tags is a material assuming any of liquid, viscous or semisolid states, and having been received in a mixing vessel.
A still another embodiment according to the present invention is characterized in that said object for charging wireless IC tags is unhardened concrete prepared by mixing/kneading cement, water and aggregate, and having been received in a mixing vessel.
A still another embodiment according to the present invention is characterized in that said vibration alignment unit includes a concave disc for receiving wireless IC tags, a round feeding path formed at the outer peripheral of said disc, and a vibration driving member for vibrating said disc and said round feeding path, and said round feeding path includes an IC tag inlet that connects to said disc at one end and an outlet that connects to an IC tag dropping chute at the other end.
A still another embodiment according to the present invention is characterized in that said vibration alignment unit includes an opening for detachably mounting a cartridge that is configured to contain wireless IC tags.
A still another embodiment according to the present invention is characterized in that said IC tag dropping chute is provided with a counting means for counting the numbers of wireless IC tags having passed through said chute.
A still another embodiment according to the present invention is characterized in that said IC tag pressure feeding section is connected with a hose used for releasing said wireless IC tags.
A still another embodiment according to the present invention is characterized in that a sensor unit including a sensor mechanism for detecting the feeding of said wireless IC tags is provided to the distal end of said hose, which is adapted to be connected to an air outlet of said IC tag pressure feeding section.
A still another embodiment according to the present invention is characterized in that the apparatus includes a remotely-operable power source for actuating the apparatus and is capable of monitoring the operating condition of the apparatus via an Internet system.
A still another embodiment according to the present invention is characterized in that said power source for actuating the apparatus may be remotely operated in response to an input of touch panel board ID.
A still another embodiment according to the present invention is characterized in that said radio communication means is a non-contact type radio communication means, which is electrically connected with a database either by cable or wirelessly, and implements radio communication by outputting radio electric waves at a preset frequency to the antenna section of the wireless IC tags to write product information data stored in the database to the wireless IC tags.
A still another embodiment according to the present invention is characterized in that said wireless IC tag is a wireless IC tag which can write and/or read out data by means of radio communication with said radio communication means, said wireless IC tag is configured in such a manner that a ferroelectric memory, which uses a ferroelectric that includes a power source section for receiving radio electric waves from said radio communication means and resonate with the radio electric waves to generate current and an antenna section for carrying out radio communication at a preset frequency, is mounted on a substrate to thereby store said data in said ferroelectric memory, and that a radio communication unit which outputs radio electric waves in the communication frequency band used for said wireless IC tags is used as said radio communication means.
By virtue of configuring the upright type apparatus for charging wireless IC tags according to the present invention by unitizing the IC tag processing section comprising an IC tag incorporation mechanism section, a writing/reading-out section and an error detection section, into each independent units, and by arranging those plural units in a vertical direction, it is possible to reduce an area required for setting the apparatus and to charge a number of wireless IC tags over a wide range of a mixing vessel within a short time. Further, even if a part of the apparatus has developed trouble, it is enough to fix only the part with such trouble, and the amount of wireless IC tags can be altered easily upon requirement by increasing/decreasing the numbers of the units to operate.
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Now, the embodiments of the present invention will be explained with reference to the appended drawings. Note that, although an example wherein wireless IC tags are incorporated to unhardened concrete is described in the following, the object to which wireless IC tags are charged is not limited to unhardened concrete, and any of liquid, viscous or semisolid material, such as thermoplastic resin in melting state, unhardened gypsum or the like can be applied as well.
In the first place, an example of the wireless IC tag which is applicable to an embodiment of the present invention will be explained. As shown in
Because of that both of the right and left side edges 1b of the wireless IC tag 1 configured as described above get sharp due to the adhesion of said inclined surface 1a, it tends to easily penetrate more deep into unhardened concrete during the mixing operation when it is charged to the unhardened concrete. Further, the fixing property of wireless IC tag to unhardened concrete is improved by a plurality of small round concaves 21 formed on the upper and bottom surfaces, and the cohesion property with unhardened concrete is improved by elongated concaves 22 provided to the upper and bottom surfaces of the wireless IC tag. In addition, because the IC chip inserted to the wireless IC tag has a plate shape with a large area, it is made possible to implement data writing/reading-out via radio communication means from an arbitrary direction to the wireless IC tag 1. Note that the wireless IC tag applied to this invention is not limited to the ones as described above, the other ones having different shapes, such as a bale shape with a cylindrical periphery, may also be used.
The outer shell of the wireless IC tag 1 is formed with a thermoplastic resin material, and the wireless IC tag chip to be inserted is a memory element capable of writing/reading-out data, which is called as RFID. For example, FeRAM chip, a ferroelectric memory using a ferroelectric as a memory element used for an IC tag is mounted onto a substrate comprising a metal plate, a ceramic plate or the like.
Any type of FeRAM, such as a capacitor-type, a transistor-type or the like, may be used to constitute an FeRAM chip for a wireless IC tag. Note that an FeRAM which is easy to use for a product management system, etc. is a passive-type FeRAM which does not mount a power source on itself, but commutates electric waves used for data access from the outside to use them as a power source. To this type of FeRAM chip, an FeRAM, which is a non-volatile memory using a ferroelectric, a power source section, which receives electric waves from the outside and resonate to generate current without mounting a battery for driving, and a film-like antenna section are mounted.
Note that the bale-shaped wireless IC tag 8 shown in
At first, wireless IC tags received in a hopper 12 arranged at the top portion of the apparatus are fed to a vibration alignment unit 40, where the orientation of the wireless IC tags are aligned. Then, the wireless IC tags smoothly move and drop through an inclined dropping chute 14 to a separating section 15, where the wireless IC tags are fed one by one at a preset interval to a vertically-dropping passage 11 locating downward. At the time of starting the operation of the apparatus 10, the unit 3 locating at the lowest stage in this embodiment is in the closed state (the advanced state of stopper 16, described later), and the unit 1 at the highest stage and the unit 2 at the next stage are both in the opened state (the withdrawn state of stopper), whereby the vertically-dropping passage 11 is opened up to a position where it reaches to the unit 3 at the lowest stage. Therefore, the first wireless IC tags entered into the vertically-dropping passage 11 are received by the unit 3 at the lowest stage, and data writing and an operation combining detection of error in writing data with data reading-out are implemented in the unit 3. If no error in writing data is detected, the IC tags are pushed out to the pressure feeding section 31 locating at the lateral side of the unit 3 and charged by means of pressurized air to a mixing vessel (not shown) at a high speed via a hose 19 (
When errors in writing data in the wireless IC tag are detected in the unit 3, the distribution section 70 associated with the unit 3 works in response to the detection signal to open the vertically-dropping passage 11 locating at the position of the unit 3, whereby the defective IC tags are received in the defective IC tag reception section 30 provided at the lower section of the apparatus. On the other hand, the normal IC tags, for those which no error in writing data was detected, are fed to the pressure feeding section 31 locating at the lateral side by the distribution section 70 without dropping to the defective IC tag reception section 30. The reference numeral 71 denotes a distribution cylinder for actuating the distribution section 70.
AS described above, when the operation for the first group of wireless IC tags is finished, then the unit 1 at the highest stage and the unit 3 at the lowest stage are opened. At the same time, the distribution sections respectively associated to those units are also opened, while only the unit 2 at the second stage is closed. Therefore, the subsequent second group of wireless IC tags are received from the vertically-dropping passage 11 to the unit 2, and data writing to the second group of wireless IC tags is implemented in the unit 2 similarly to the case of the unit 3 described above, and followed by detection of errors in data writing. When no error in the data writing is detected, the wireless IC tags are pushed out by the distribution section of the unit 2 to the pressure feeding section 32 locating at the lateral side, which corresponds to the unit 2, and then charged to the mixing vessel by means of pressurized air. When an error in data writing is detected, the distribution section of the unit 2 works to cause the vertically-dropping passage 11 locating at the position of the unit 2 to open, whereby the defective IC tags drop to the defective IC tag reception section 30 provided to the lower section of the apparatus.
In respect of the subsequent third group of wireless IC tags, the unit 1 stay in a closed state, and the unit 2 and the associated distribution section are opened, and the unit 3 and the associated distribution section are also opened. Then, as described above, operations such as data writing to the third group of wireless IC tags, detection of errors in data writing and feeding to the pressure feeding section 33 corresponding to the unit 1 are implemented in the unit 1 at the highest stage, and subsequently such operations described above are repeated in turn. Note that those repeated operations are carried out under the control of a control unit which works in response to signals from various sensors provided to the separating section 15 for the dropping chute 14 and the other parts.
Now, the structure of the respective components of the apparatus will be explained specifically.
The wireless IC tags 1 to be put to the hopper 12 may be supplied in the form of a cartridge 51 in which wireless IC tags are contained beforehand. The cartridge 51 containing wireless IC tags is mounted to an opening of the hopper 12 so that wireless IC tags 1 are put to the hopper 12. The outlet of the hopper 12 of the apparatus 10 for processing data and charging wireless IC tags is configured so that the cartridge 51 can be detachably mounted to said outlet.
The cartridge 51 includes a cylindrical basket body 52 in which a plurality of wireless IC tags, to which data has not yet written, have been contained beforehand. An opening 53 adapted to fit to the outlet of the hopper 12 is formed in the bottom portion of the cartridge 51, so that wireless IC tags are dropped/put to the hopper 12 through this opening 53. Further, the bottom portion of the cartridge 51 is inclined toward the opening 53, and rail members 54 for guiding wireless IC tags to the opening 53 are formed on the bottom portion. Note that the shape of the cartridge 51 shown above is just an example, and the cartridge 51 maybe configured in the other shapes.
When the amount of wireless IC tags 1 in the hopper 12 became short, wireless IC tags 1 can be supplied/supplemented easily by replacing the cartridge 51. Besides, by enclosing the cartridge 51 after charging wireless IC tags 1 therein, it is possible to prevent the other wireless IC tags and/or forged wireless IC tags from being mingled, whereby the implementation of quality management system for a concrete construct can be achieved securely by using wireless IC tags 1 to which correct data have been written.
Following to counting the numbers of the passages of wireless IC tags 1 by means of a counting sensor 63 provided to the dropping chute 14, the wireless IC tags 1 pass the upper stopper member 61 staying on the withdrawn position, then hit and contact to the lower stopper member 62 being in the protruded (advanced) state to stop there (the sate shown in
When the stopper 16 advanced and the vertically-dropping passage 11 was blocked, wireless IC tags 1 dropping through the vertically-dropping passage 11 are placed on the stopper 16 to temporarily stop there. A data writing unit 36 (writer section) using a radio communication means is disposed at a position opposing to the temporary stop position of said wireless IC tags, where various data are written to the wireless IC tags 1. A distributing plate 72 adapted to be advanced and withdrawn (entering/exiting movement) by a distributing cylinder 71 of the distribution section 70 is provided under the stopper 16 so that it traverses the vertically-stopping passage 11, whereby the wireless IC tags written with data dropping from the position of the stopper due to opening action of the stopper 16 are received on the distributing plate 72 being in advancing state. A data reading-out unit 37 (reader section) using a radio communication means is disposed so that it opposes to wireless IC tags on the distributing plate 72 at the position of said distributing plate, whereby the data written to those wireless IC tags on the distributing plate 72 are read out by the data reading-out unit 37.
The data reading-out unit 37 has further function of inspecting the wireless IC tags dropping from the stopper position. When data is written without errors, the distributing plate 72 extends to the corresponding laterally-sided pressure feeding section 31 (33, 32) by virtue of actuation of the distributing cylinder 71, whereby the wireless IC tags on the distributing plate 71 are blown to the front side of the data reading-out unit by virtue of pressurized air ejected from the backside of the data reading-out unit and charged to the mixing vessel (not shown) through the hose 19 (
As described above, both of the distributing cylinder 71 and the distributing plate 72 have function of distributing wireless IC tags to the sound ones and the defective ones. When wireless IC tags are processed by one unit (ex. the unit 2), the units (ex. the units 1, 3) and the stoppers and the distributing plates associated with the other units (ex. the units 1, 3) are kept in a state having withdrawn from the vertically-stopping passage 11 until the processing of the wireless IC tags by the active unit 2 is completed. In this manner, a plurality of IC tag processing units disposed at the upper and lower stages repeat the foresaid operations in order of proceeding from said unit at the upper stage to the unit at the lower stage in turn.
Besides, a sensor unit (not shown) which includes a sensor for detecting the charging of wireless IC tags 1 is provided to the distal end of the hose 19 adapted to be connected to an air blowing outlet 18 of each IC tag pressure feeding section 31, 32, 33. The sensor unit is fixed to the mixing vessel by means of a hook or the like so that it does not come undone easily. It will be possible to monitor the result of charging wireless IC tags to the mixing vessel by unitizing the distal end of the hose and install a sensor mechanism thereto.
As described above, the present invention makes possible to drastically reduce tag clogging at the charging outlet and free selection of setting site of the apparatus by configuring the apparatus in IC tag charging structure using pressurized air through an air hose. Further, by virtue of unitizing the IC tag processing and charging mechanism section to position the resultant units at the upper and lower stages, whereby constituting the upright type apparatus for charging IC tags, it is enabled to reduce an area required for setting the apparatus and to easily alter the charging amount of wireless IC tags by increasing or decreasing the numbers of said units depending upon the usages and the circumstances. Further, the position level to set the upright type apparatus for charging wireless IC tags according to the present invention is not necessarily same as the level of the mixing vessel, it is even possible to directly set the apparatus to the ground to thereby secure the safeness in handling and to carry out the maintenance. Note that, though the IC tag processing units are constituted in three stages in the foresaid embodiment, the present invention is not limited to such constitution, and it is certainly possible to constitute the units in an arbitrary numbers of stages depending on the size of the mixing vessel. Besides, the pressure of said pressurized air is normally set to several atmospheric pressures.
The apparatus for processing and charging wireless IC tags according to the present invention is adapted to be switched on/off remotely. Furthermore, the operation of the power source for said processing/charging apparatus via Internet is executable in the case may be. Consequently, it is possible to determine the operational condition of said processing/charging apparatus at a place other than the operating site and to take an appropriate countermeasure promptly when a trouble has been developed.
Further, although this type of apparatus in the past have been constructed in such a structure that any workers or operators may handle various operations on the apparatus including switching-on of the power source, the apparatus according to this invention is so configured that various operations including data writing/reading-out on the apparatus are adapted to be permitted via ID input on the touch panel board, so that the operators and operating competence can be defined to thereby increase liability to the implementation of said apparatus. Moreover, it was required to modify the apparatus totally in the past when the shape of the IC tag to be charged is altered. However, the present invention provides such an advantage that it is possible to take a measure to cope with such alteration in the shape by replacing only the relevant unit. In addition, when one unit goes wrong, it is possible to fix the apparatus by partially repairing only the wrong unit.
The upright type apparatus for charging wireless IC tags according to the present invention is structured by unitizing an IC tag processing section comprising an IC tag charging mechanism section, a data writing/reading-out section, an error inspection section, etc. and positioning these units in a vertical direction, so that the area required for setting the apparatus can be reduced, and a number of wireless IC tags can be charged over the wide range of a mixing vessel within a short time. Furthermore, when a part of the apparatus goes wrong, it is possible to fix the apparatus by repairing the unit containing the wrong part, and it is also possible to easily change the charging amount of wireless IC tags by increasing/decreasing the numbers of the units to be operated depending on the circumstances.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2011-012083 | Jan 2011 | JP | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/JP2011/061114 | 5/9/2011 | WO | 00 | 2/7/2012 |
