JP2001202481A - Multi-read method using radio tag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-read method for accurately reading data stored in radio tags in the state that plural read objects like sushi (vinegared fish and rice) trays to which radio tags are set are piled up. SOLUTION: In the state that plural sushi trays 2 to which radio tags 1 are set are piled up, an infrared distance measurement part 5 is used to measure the distance from the sushi tray in the top to that in the bottom, namely, the upper surface of a table, and the measured distance is divided by dimensions of each sushi tray to obtain the number of piled-up sushi trays. When a handy terminal 4 is used to read data stored in individual radio tags 1 set to plural piled-up sushi trays 2, the number of piled-up sushi trays is extracted together. When two kinds of numbers obtained in this manner are equal to each other, it is confirmed that data has been correctly read.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-reading method for reading data of a wireless tag attached to a plurality of objects to be read, each of which has a wireless tag attached thereto.

[0002]

2. Description of the Related Art A so-called wireless tag having a data storage section, a control section, a transmission / reception section and the like therein and having a built-in battery or a non-powered type without a built-in battery is known.
If the wireless tag does not have a power supply, an LC resonance circuit is provided inside the tag, a radio wave transmitted from a reader / writer outside the tag is received by the tag, and the radio wave inside the tag is used by using the radio wave. A resonance electromotive force is generated by an LC circuit. Then, using the electromotive force as a power source, the input / output of data to / from the storage unit inside the tag and the transmission / reception of data to / from a reader / writer outside the tag are performed.

[0003] An example in which such a wireless tag is used for a sushi plate for conveyor belt sushi will be described with reference to FIG. FIG. 2 shows a sushi plate 11 on which sushi and the like to be gripped in the sushi plate are placed, and a wireless tag 13 is embedded in a bottom surface 12 of the sushi plate 11. The price of the sushi to be placed on the attached sushi plate 11, the type of sushi,
Data such as the time supplied is stored on the rotating unit.

In the case of conveyor belt sushi, sushi plates of the same shape are usually used, but the prices of sushi types having different prices are determined by customers and clerks depending on the pattern and color drawn on the sushi plate except for the menu. Can be identified. Also, customers usually eat sushi from multiple sushi dishes,
As shown in FIG.
4 are stacked. If the customer has completed the meal,
In a state where a large number of sushi dishes 11 are stacked as shown in FIG.
Closer to the sushi plate 11. Then, for example, by moving the handy terminal 15 as shown by an arrow 16 from the upper end to the lower end of the stacked sushi plates 11,
The price and the like of each sushi plate 11 are read, and the settlement amount is calculated.

[0005]

However, when a large number of stacked sushi dishes are multi-read using a handy terminal as described above, 100% of the data of all the stacked sushi dishes is required. Reading may not be possible. Therefore, once read from the top to the bottom, the number of plates and the amount of money at that time are temporarily stored, the data of the plates stacked again from the bottom to the top are read again, and the data read earlier are compared and the same is read. If so, it is recognized that the number and the amount of money have been read correctly, and if the comparison results are different, an alarm is issued and the reading is performed again by the handy terminal. As described above, even if the reading operation is repeated several times, it is difficult to confirm that reading has been correctly completed. In particular, there are many reading omissions as erroneous readings.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it has been found that when a plurality of objects to be read, such as a sushi plate with a wireless tag, are stacked, data stored in the wireless tag can be accurately read. It is an object of the present invention to provide a multi-read method using a wireless tag that can be read at a time.

[0007]

According to a first aspect of the present invention, a distance from one end to the other end of the object to be read in which a plurality of objects to be read having a wireless tag storing data therein are mounted is stacked. And a first number calculation step of calculating the number of the stacked read targets by dividing the measured distance by the dimension of the read target unit,
A data reading step of reading data stored in each of the stacked wireless tags to be read, and a second number calculating step of calculating the number of the read targets from data obtained as a result of reading; A comparing step of comparing the first number obtained in the first number calculating step with the second number obtained in the second number calculating step, and comparing the first number with the first number. When the second numbers match, it is recognized that the data reading obtained in the data reading step has been normally performed.

[0008] In the multi-read method using the wireless tag having the above-described configuration, a plurality of objects to be read having the wireless tag with data stored therein are mounted in a stacked state.
The distance from one end to the other end of the stacked read targets is calculated and divided by the size of each read target to obtain first number data of the stacked read targets. When the read data of each wireless tag of each read target is sequentially read, a second number data is obtained together with other data, and if the first and second number data are compared, they are identical. For example, it can be confirmed that the data reading has been performed normally. If they are different, it means that the data reading has not been correctly performed, and the data reading can be performed again.

Further, the invention according to claim 2 is characterized in that the object to be read is a sushi plate of conveyor belt sushi.

[0010] In the multi-read method using the wireless tag having the above-described structure, the customer pays for a large number of sushi plates used for rotating sushi having the same shape and the same size in a state where the customers eat a plurality of types and stack them. , The processing is performed accurately and smoothly.

Further, the invention according to claim 3 is characterized in that the distance measurement is a measurement using infrared rays.

In the multi-read method using the wireless tag having the above configuration, simple and accurate measurement can be performed by using infrared rays for distance measurement.

The invention according to claim 4 is characterized in that the distance measurement measures a distance from an uppermost edge to a lowermost edge of the stacked sushi plates.

In the multi-read method using the wireless tag having the above configuration, when measuring the stacking distance of sushi dishes having the same shape and the same shape, the distance from the uppermost edge to the lowermost edge of the sushi dish is measured. , An accurate distance is required.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. The details of the sushi plate to which the wireless tag is attached are the same as those in FIGS. 2 and 3, and a detailed description is omitted. The sushi plate 2 to which the wireless tag 1 is attached has the same shape and dimensions, even though the design and pattern drawn on the plate surface are different, and many empty sushi plates 2 after a meal are completed. It is stacked on the table 3. Each dish 2 has the same shape and dimensions, but the price differs depending on the type of sushi placed on each sushi dish. Therefore, the wireless tag 1 for each sushi plate 2
The type data and price data stored in are different.

When the clerk reads the tag data of the stacked sushi plates 2 using the handy terminal 4, in the present invention, first, the distance L between the uppermost sushi plate 2 and the table 3 is measured. That is, the handy terminal 4 is provided with an infrared distance measuring unit 5, and the infrared distance measuring unit 5 includes an infrared transmitting unit 5a and an infrared receiving unit 5b, and a distance measuring unit (not shown). The clerk first adjusts the lower surface of the handy terminal 4, that is, the surface on which the infrared transmitter 5a and the infrared receiver 5b are open, to the uppermost edge of the sushi plate 2 at the top. In this state, the surface of the table 3 is irradiated with infrared rays to measure the distance L from the upper end of the uppermost sushi plate 2 to the upper surface of the table 3, and this data is stored. That is, the upper surface of the table 3 corresponds to the lowermost end of the stacked sushi plates 2.

On the other hand, since the sushi plates 2 are all of the same shape and the same size as described above, the distance D between the sushi plates when they are stacked is known in advance, and is stored inside the handy terminal 4. Have been. Therefore, by dividing the distance L previously measured and stored by the distance D between the sushi dishes,
The number of stacked sushi plates 2 is calculated. The calculated number data is also stored inside the handy terminal 4. In general, an ordinary technique may be used for a distance measurement technique, a division technique, and the like using infrared rays.

After the accurate number of sushi plates stacked is obtained in this way, the clerk can use the sushi plates stacked with the handy terminal 4 in the same manner as described with reference to FIGS. 2 and move it down from the top,
The price data of each sushi plate 2 is read. Then, the number of the sushi plates 2 obtained as a result of the reading is compared with the exact number already obtained by the infrared measurement. Turn the data. If the number read and the number measured are different, it means that there is an error in reading by the handy terminal, and an alarm indicating an abnormal state is generated to notify the clerk. The clerk again moves the handy terminal from below to above, for example, and reads again. Since the accurate number of sushi plates has already been determined by infrared measurement, if the number of sushi plates matches by re-reading, the settlement amount and the like obtained at that time will be used as correct data.

In the above embodiment, the sushi plate used for sushi is described as an example. However, the present invention can be applied to other examples. For example, when a wireless tag is attached to each product in a manufacturing process or an inspection process of a product having the same shape and dimensions, when reading data of each wireless tag in a state where a plurality of products are stacked. Is also available.

Further, the present invention can be similarly applied to a case where the same type of products each having a wireless tag attached thereto are stacked at a store or the like. In the above description, when the articles are stacked in the height direction, the stacked height was measured, but the present invention is not limited to only the height direction, Depending on the properties of the articles, it can be applied in the same manner by measuring the total length of the articles in a state where they are arranged in the horizontal direction.

[0021]

According to the present invention, in the state where a large number of articles of the same shape and the same size, each of which is attached with a wireless tag storing various data, are stacked in a vertical direction or a horizontal direction, the data of the wireless tags of these articles is stored. In the case of multi-read, accurate reading can be performed.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining an embodiment of the present invention.

FIG. 2 is a schematic sectional view of an example of an article used for explaining a conventional technique.

FIG. 3 is a diagram for explaining a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Wireless tag 2 ... Sushi plate 3 ... Table 4 ... Handy terminal 5 ... Infrared distance measuring unit 5a ... Infrared transmitting unit 5b ... Infrared receiving unit

Claims (4)

[Claims] A step of measuring a distance from one end to the other end of the plurality of read targets on each of which a plurality of read targets to which a wireless tag storing data is stored are stacked; A first number calculating step of calculating the number of the stacked read targets by dividing by the size of the single read target; and data stored in each of the stacked wireless tags to be read A second number calculating step of calculating the number of the objects to be read from the data obtained as a result of the reading, a first number obtained in the first number calculating step, and the second number calculating step. A comparing step of comparing the second number obtained in the number calculating step with the second number, and if the first number and the second number match as a result of the comparison, the data obtained in the data reading step Recognize that scanning was performed normally A multi-read method using a wireless tag. 2. The multi-read method using a wireless tag according to claim 1, wherein the object to be read is a sushi plate of conveyor belt sushi. 3. The multi-read method using a wireless tag according to claim 1, wherein the distance measurement is a measurement using infrared rays. 4. The multi-read method using a wireless tag according to claim 2, wherein the distance measurement measures a distance from an uppermost edge to a lowermost edge of the stacked sushi dishes.