JP7240171B2 - RFID reader - Google Patents

Description

TECHNICAL FIELD The present invention relates to an RFID reader that reads an RFID-attached managed object in a holding environment.

In recent years, for example, an inventory of goods held in a warehouse is regularly taken, and at that time, RFID (Radio Frequency), which enables wireless communication, is used for goods and containers loaded with a predetermined number of such goods. Identifier) are attached, and inventory management and the like are performed by reading tag information from these RFID tags with a reader. It is desired to save human labor in reading such tag information and to read the tag information efficiently.

Conventionally, techniques described in Patent Documents 1 and 2 are known as techniques for inventory management using RFID. Patent Literature 1 describes an inventory method using RFID, for inventory items attached with RFID tags to which unique numbers are assigned, RFID for reading the RF tag provided on the traveling cart for moving the antenna. An antenna connected to a reader/writer is described to scan the antenna and read the RFID tag with a localization function that determines the position coordinates in front of the shelf.

In addition, in Patent Document 2, a flightable information collection unit connected to a base unit by a cable is flown to acquire image data of all the items stored in a warehouse or the like, thereby collecting the inventory status of the items. is stated.

On the other hand, Japanese Patent Application Laid-Open No. 2002-300020 discloses a technique for monitoring a facility using a flying mobile body. Patent Document 3 describes a monitoring device in which a flying mobile body having an imaging unit is connected to a traveling mobile body via a wiring section for power supply that ensures a long flight time, and a flight control section of the flying mobile body is It is described that the imaging unit manages the facility by flying so as to track the moving object.

Japanese Patent Application Laid-Open No. 2010-030712 JP 2017-218325 A JP 2018-111340 A

By the way, when checking inventory in an inventory, etc., when using a moving object that flies as in Patent Documents 2 and 3 in place of the antenna moving cart equipped with an antenna that can be raised and lowered as in Patent Document 1, Although it is necessary to fly the aircraft for a long time, the aircraft cannot be equipped with a heavy, large-capacity power source, and the base unit, which is fixedly arranged for charging as in Patent Document 2, is used. On the other hand, in the case where the flying object as a power base is tracked by the flying object as in Patent Document 3, the object or the like existing at the height position at which the traveling object travels is required to travel. There is a problem that the body interferes with the flight of the aircraft, making it difficult to recognize, or complicates the flight path, resulting in a decrease in efficiency.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide an RFID reader that improves the efficiency of reading tag information from RFID tags attached to all objects accommodated in an area. do.

In order to solve the above problems, in the invention of claim 1, a plurality of objects to be accommodated with RFID tags of unique information are accommodated in an area where at least flight-related marks are arranged, and attached to the objects to be accommodated. An RFID reader for an aircraft for reading RFID tags attached thereto without contact, comprising a power source for the aircraft, power monitoring means for monitoring the power capacity of the power source for the aircraft, and imaging at least the flight-related mark An imaging means, a tag reading means for reading tag information of the RFID tag attached to the object to be contained, and at least the imaging means to image and recognize the flight-related mark so that the tag of the RFID tag is made to fly. Information is read by the tag reading means, and the reading rate of the read tag information with respect to the number of objects is read within the range of power capacity conditions preset for the power capacity monitored by the power monitoring means and control means for determining whether or not to circulate within the area until reaching the reading rate condition set by , when the reference point for circulating is reached .

In the invention according to claim 2, the control means transmits all the read tag information to a predetermined management device after reading of the RFID tag is completed, and the tag information of the RFID tag to be read is provided as management tag data. Information including the read rate calculated by referring to the management tag data is received from the management device, and the device is circulated in the area until the set read rate condition is reached.

In the invention according to claim 3, the control means includes the missing tag information in the information received from the management device, and reads only the missing RFID tag in the next cycle. .

In the fourth aspect of the present invention, the control means has tag information of an RFID tag to be read as management tag data, and compares the read tag information with the management tag data to calculate the reading rate. .

In the fifth aspect of the present invention, the control means specifies matching tag information and non-matching missing tag information when calculating the reading rate by comparing the read tag information of the RFID tag with the management tag data. Then, in subsequent rounds, only the RFID tags that have been overlooked are read.

In the sixth aspect of the present invention, a flight reading time condition is set in the control means, and the reading rate condition is within the range of the reading time condition, and the reading rate condition is within the power supply capacity condition. .

In the invention according to claim 7, a station serving as an initial position for flight is provided in the area and is provided with power supply means for charging the power source for the flying object, and the control means operates when the power supply capacity condition is reached. , to return to the station.

In the eighth aspect of the invention, a station serving as an initial position for flight is provided in the area and is provided with power supply means for charging the power source for the flying object, and the control means reads within the range of the power supply capacity condition. When the tag information obtained reaches the reading rate condition, it is returned to the station.

According to the invention of claim 1, the power source for the flying object, the power monitoring means for monitoring the power supply capacity of the power source for the flying object, the imaging means for imaging at least flight-related marks arranged in the area, and the tag information of the RFID tag. The control means causes the tag reading means to read the tag information of the RFID tag, and the power supply monitoring means to monitor Within the range of the power capacity condition preset for the power capacity to be stored, it circulates in the area until it reaches the reading rate condition set for the reading rate of the read tag information for the number of objects to be accommodated. With this configuration, it is possible to improve the reading efficiency under limited conditions without requiring manual operation for reading the RFID tags attached to all the objects accommodated in the area. It is.

According to the inventions of claims 2 and 3, all the read tag information is transmitted to a predetermined management device, and the reading rate is calculated by the management device provided with the tag information of the RFID tag to be read as management tag data. By configuring to receive information including the reading rate and missing tag information, processing in the aircraft can be reduced, human confirmation can be performed, and tag information can be read. Even if there is a reading error, it is possible to prompt manual supplementary reading.

According to the invention of claims 4 and 5, the control means includes tag information of an RFID tag to be read as management tag data, and compares the read tag information with the management tag data to calculate a reading rate, Further, by specifying the missing tag information and reading only the missing RFID tag in the next cycle, it is possible to read again without waiting for reception from the management device. is possible.

According to the sixth aspect of the present invention, the reading time condition by flight is set in the control means, and the reading rate condition is within the range of the reading time condition, and the reading rate condition is within the power supply capacity condition. , which can improve reading efficiency in a limited time range without requiring human operation.

According to the inventions of claims 7 and 8, a station serving as an initial position of flight is provided in the area and provided with power supply means for charging the power source for the flying object, and reading is performed within the power source capacity condition or the range of the power source capacity condition. When the tag information reaches the reading rate condition, it is returned to the station, so that sufficient flight can be ensured and the reading efficiency can be improved under limited conditions.

1 is an explanatory diagram of an environment in which an RFID reader according to the present invention is used; FIG. 1 is a configuration explanatory diagram of an RFID reader according to the present invention; FIG. FIG. 3 is an explanatory diagram of automatic flight within the area where the RFID reader of FIG. 2 is used; FIG. 3 is an explanatory diagram of setting contents related to flight of the RFID reader of FIG. 2; 3 is an operational flow chart of the flight of the RFID reader of FIG. 2; 6 is an operation flowchart of the reading process of FIG. 5; 6 is another operation flowchart of the reading process of FIG. 5;

Embodiments of the present invention will be described below with reference to the drawings. Here, although the area where the RFID reader of the flying object is used includes a product warehouse, a manufacturing factory, a product shipping factory, etc., the product warehouse will be described in this embodiment. In addition, objects stored in areas such as product warehouses include products, manufacturing parts, repair parts, containers (boxes, containers, etc.) that store these, etc., and RFID tags with unique information are attached to each product. etc., individually attached to a container, or products individually attached with an RFID tag are housed in a container further attached with an RFID tag. A container in which a product or the like is stored and attached with an RFID tag will be described as an object to be stored.

FIG. 1 shows an explanatory diagram of the environment in which the RFID reader according to the present invention is used. In FIGS. 1A to 1C, an RFID reader (hereinafter referred to as “flying object”) 11 (explained in FIG. 2) of a flying object is placed in a product warehouse 12. 13 are arranged in, for example, three rows (holding shelf rows 13A to 13C). As shown in FIG. 1B, each holding shelf 13 has, for example, three stages, and each stage is provided with reading range marks 17A to 17C (described in FIG. 4) indicating the reading range. The container 15 is attached with an RFID tag 16 of unique information and placed thereon. The unique information of each RFID tag 16 includes at least the product name, model number, etc. of the object 15 to be accommodated and the address information of the location where the object is stored in the product warehouse 12 .

On the other hand, the product warehouse 12 is provided with a station 14 which is the initial position of the aircraft 11, and is equipped with power supply means (not shown) for charging the power source for the aircraft in a non-contact manner. A station mark 21 shown in is formed. It should be noted that the flying object power source may be charged by wire from the power supply means. Then, as shown in FIG. 1C, on the floor surface of the product warehouse 12, for example, there are a flight direction mark 18 and flight performance marks 19 and 20 as flight-related marks along a flight route for automatic flight. provided (detailed in FIG. 3).

FIG. 2 shows an explanatory diagram of the configuration of the RFID reader according to the present invention. In FIG. 2A, the flying object 11 is in the initial position when it lands on the station 14 on which the station mark 21 is formed. For example, it is charged from the power supply means in a non-contact manner.

As shown in FIG. 2B, the flying object 11 includes a controller 41 as control means, a driving mechanism portion 42, an imaging portion 43 as imaging means, a reader 44 as tag reading means, a transmitting/receiving portion 45, and an object for flying object. A power supply 46 is provided, and the aircraft power supply 46 is provided with a charging section 46A for charging from the power supply means of the station 14 .

The drive mechanism section 42 is a mechanism configured by a motor or the like for flight. The imaging unit 43 is a camera that images flight-related marks such as the station mark 21, the traveling direction mark 18, the flight marks 19 and 20, and the reading range marks 17A to 17C provided in the product warehouse 12. FIG. The reader 44 reads tag information from the RFID tag 16 attached to the object 15 in a non-contact manner, and is generally known for RFID tags.

When the reading of the RFID tag 16 is completed, the transmitting/receiving unit 45 transmits the tag to the management device (personal computer 32, portable terminal 33) shown in FIG. Send information. The management device (personal computer 32, portable terminal 33) has management tag data. The management tag data contains tag information (product name, model number, address information, etc.) of the RFID tags 16 of all objects 15 to be stored in the product warehouse 12, and is transmitted from the aircraft 11. By referring to the received tag information and management tag data, the matching tag information is specified as existing in the product warehouse 12, and the mismatching tag information is specified as the overlooked tag information, and the RFID to be read. With respect to the number of tags 16, it is calculated by the ratio of the number of tag information that matches the management tag data in the read tag information.

The controller 41 roughly recognizes at least the traveling direction mark 18 and flight performance marks 19 and 20 (station mark 21 when returning to the station 14) captured by the imaging unit 43, and causes the aircraft to fly. The read range marks 17A to 17C are recognized, and the reader 44 reads the tag information of the RFID tag 16 attached to the object 15 within the read range. , an image analysis unit 54 , a reading information processing unit 55 , a drive control unit 56 and a power supply monitoring unit 57 .

The control unit 51 controls the flying object 11 in an integrated manner. The storage unit 52 is a memory that stores data of areas for executing programs and tag information. The flight setting section 53 performs settings for flying the aircraft 11, and the setting contents will be described with reference to FIG. 4(A).

Further, in the flight setting section 53, a power supply capacity condition 53A is set and a reading rate condition 53B is set. As the power supply capacity condition 53A, for example, a threshold value is set that allows the flying object power supply 46 to make at least one round in the area with the power supply capacity. In addition, the reading rate condition 53B is calculated by the ratio of the number of tag information that matches the management tag data 16A in the read tag information to the number of RFID tags 16 to be read by the reading information processing unit 55, which will be described later. For example, it is set as 95 percent.

Note that the flight setting unit 53 may set a reading time condition for a flight (for example, a time period of 0:00 to 6:00 midnight). Specifically, the reading time is set such that the circling within the area and the charging of the flying object power source 46 are repeated within the time range. In this embodiment, it is assumed that reading time conditions have been set. A single day or a plurality of days may be set as the start date for flying the flying object 11 to read the RFID tag 16 .

The image analysis unit 54 analyzes and recognizes the traveling direction mark 18, the flight performance marks 19 and 20, and the station mark 21 captured by the imaging unit 43, and performs flight control based on the contents set by the flight setting unit 53. (explained in FIG. 4(A)). The image analysis section 54 recognizes the reading range marks 17A to 17C imaged by the imaging section 43, and is used to specify the reading position (range) of the reader 44. FIG.

The reading information processing unit 55 acquires the tag information of the RFID tag 16 read by the reader 44, stores it in the storage unit 52, and after the reading is completed, transmits the information to the management device (personal computer 32, mobile terminal 33) from the transmission/reception unit 65. The RFID tag 16 is read again when information about the reading rate and missing reading of the RFID tag is received from the management device.

The drive control section 56 drives and controls the flight of the aircraft 11 by the drive mechanism 42 according to the setting of the flight setting section 53 . The power supply monitoring unit 57 monitors the capacity of the flying object power supply 46, and if the power supply capacity falls below a predetermined threshold (for example, the capacity of the RFID tag 16 that can be read for one round in the product warehouse 12). In some cases, the flight setting unit 53 controls the return to the station 14 .

Next, FIG. 3 shows an explanatory diagram of automatic flight within the area where the RFID reader of FIG. 2 is used, and FIG. 4 shows an explanatory diagram of setting contents regarding flight of the RFID reader of FIG. In FIG. 3, as shown in FIG. 1A, a flight direction mark 18 and flight performance marks 19 and 20 are provided in the product warehouse 12 as flight-related marks for the flight route of the aircraft 11 .

A check mark is superimposed on the traveling direction mark 18 . The traveling direction mark 18 has a triangular shape, for example, and indicates the direction of its apex as the traveling direction. 13C).

That is, in the flight setting section 53 of the flying object 11, the relationship between the traveling direction mark 18 (check mark) and the flight is set. As shown in FIG. The flight direction is related, and as a check mark, for example, "S" is the start of reading, "1 to (number)" is the flight order, "E" is the end of reading, and "R" is the repeat. Here, the check mark "R" is the starting point for repeated flight, and the determination as to whether or not to carry out repeated flight is based on whether there is missing tag information read by the read information processing unit 55 or not. (explained in FIGS. 6 and 7). It should be noted that the check marks "S" and "R" may be combined into one, which is effective for narrow areas (product warehouses), for example.

Also, the flight marks 19 and 20 provided in the product warehouse 12 are displayed in color, for example. That is, the flight setting unit 53 of the flying object 11 is set to fly forward if image recognition of the color display of the flight performance mark 19 continues until the end of reading "E", and flight in the forward direction is set. If so, it is set as backward flight to extract the concept of the direction of travel.

Further, in the flight setting unit 53 of the flying object 11, reading range marks 17A to 17C (FIG. 1(B)) are set as the reading range of the RFID tag 16, and the flight height is controlled by this recognition. is. Codes and symbols such as numbers may be arranged in the read range marks 17A to 17C. For example, by arranging a number (for example, "30") as a reading distance and recognizing the number as an image, the RFID tag 16 is read by approaching the distance of the recognized number (for example, a distance of 30 cm from the shelf). It is something that can be done.

Therefore, FIG. 5 shows an operation flowchart of movement of the flying object constituting the RFID reading system of FIG. 2, and FIG. 6 shows an operation flowchart of the reading process of FIG. In FIG. 5A, it is assumed that the flying object power source 46 is sufficiently charged from the power supply means on the station 14 via the charging section 46A in the product warehouse 12. For example, Flight is started when the time (time) set by the power supply capacity condition 53A of the flight setting unit 53 arrives.

That is, when the flight object 11 flies and image-recognizes the "S" check mark of the traveling direction mark 18, the image of the first reading range mark 17A is image-recognized, and the RFID tag 16 attached to the object 15 is read. Reading is started (step (S) 1).

After that, the traveling direction mark 18 (check mark), the reading range marks 17A to 17C, and the flight marks 19 and 20 are imaged by the imaging unit 43, and the image analysis unit 54 recognizes the images, and the RFID tag 16 in the reading range while flying. is read, and the read tag information is stored in the storage unit 52 (S2), and this is continued until the check mark "R" shown in FIG. 3 is image-recognized (S3). Then, when the check mark "R" is image-recognized, it means that the flight route within the product warehouse 12 has been completed once, and the process of whether or not to read the RFID tag 16 is repeatedly performed (FIG. 6). or go to FIG. 7).

Subsequently, in FIG. 6, when the flying object 11 recognizes the check mark "R" (S3), the reading information processing section 55 communicates all the tag information stored in the storage section 52 from the transmitting/receiving section 45. It is transmitted to the management device (personal computer 32, portable terminal 33) via the relay unit 31 (S11). The management device compares the RFID tag to be read with the tag information received from the aircraft 11 based on the management tag data, calculates the reading rate, and determines whether or not there is a missing RFID tag 16 . After collation, the reading rate and the information of the missing RFID tag 16 are transmitted to the aircraft 11 .

The flying object 11 receives information on the RFID tag 16 from the management device within a predetermined period of time (S12), and the read time is within the set reading time condition (S13). If the power supply capacity of the aircraft power source 46 is equal to or greater than the threshold (S14), and if the read rate calculated above is less than the threshold of the read rate condition (S15), the check mark "R" on the aircraft 11 shown in FIG. ” to the start position of “S” again, and the reading of the RFID tag 16 by the flying object 11 is repeated from S1 in FIG. done.

On the other hand, when the information of the reading rate and reading error of the RFID tag 16 is not received from the management device within a predetermined time (S12), the image of the station mark 21 is recognized and returned to the station 14 (S16). Further, when the reading time condition of S13 is reached, or when the power supply capacity of the aircraft power supply 46 is less than the threshold of the power supply capacity condition 53A of S14, or when the reading rate of S15 is equal to or greater than the threshold of the reading rate condition In the case of , the station mark 21 is image-recognized and returned to the station 14 (S16). That is, when the reading time condition is reached and the reading rate condition is reached, the reading is completed and returned to the station 14, and when the power supply capacity is reduced, the return to the station 14 is performed for charging.

In the management device (personal computer 32, mobile terminal 33), all of the tag information read by the flying object 11 and the missing tag information can be displayed to the administrator. As a result, when the tag information includes missing tag information, it is possible to encourage human confirmation and human replenishment reading. As compared with the case where the RFID tags 16 are not read, only the RFID tags 16 that are overlooked need to be read manually, and even if there are RFID tags 16 that are not read, the overall efficiency is improved.

On the other hand, in the case of returning to the station 14 because the power supply capacity of the flying object power supply 46 fell below the threshold of the power supply capacity condition in S14 (S16), on the condition that the reading time condition has not been reached (S13). , waiting for the power supply capacity of the flying object power supply 46 to reach a threshold value or more or a predetermined capacity or more (S14), and under the condition that the reading rate condition is less than the threshold value (S15), the flying direction mark shown in FIG. 3 of the flying object 11 The flying object 11 flies again to the start position of the check mark "S" in 18, and the reading of the RFID tag 16 by the flying object 11 is repeated from S1 in FIG.

Next, FIG. 7 shows another operation flowchart of the reading process of FIG. In FIG. 6, reading is repeated for all RFID tags 16 when the reading rate is less than the reading rate condition. The address information is obtained, and only the RFID tag 16 that has been missed is read again. From these things, for example, FIG. 7 is effective when the position where the object 15 is accommodated is known in advance, and FIG. can also be said to be effective when the accommodation location is unknown (random arrangement).

In FIG. 7(A), when the flying object 11 recognizes the check mark "R" (S3), the reading information processing unit 55 transmits the data from the transmitting/receiving unit 45 to the management device (personal computer) through the communication relay unit 31. 32 and mobile terminal 33) (S21). The management device compares the RFID tag to be read with the tag information received from the aircraft 11 based on the management tag data, calculates the reading rate, and determines whether or not there is a missing RFID tag 16 . After collation, the reading rate and the information of the missing RFID tag 16 are transmitted to the aircraft 11 .

The flying object 11 receives information on the RFID tag 16 from the management device within a predetermined period of time (S22), the reading rate is within the set reading time condition (S23), and the power monitoring unit 57 If the power supply capacity of the aircraft power supply 46 is equal to or greater than the threshold (S24) and the calculated reading rate is less than the threshold of the reading rate condition (S25), the process proceeds to FIG. 7B.

On the other hand, if the information of the reading rate and the reading error of the RFID tag 16 is not received from the management device within a predetermined time (S22), the image of the station mark 21 is recognized and returned to the station 14 (S26). Further, when the reading time condition of S23 is reached, or when the power supply capacity of the aircraft power supply 46 is less than the threshold of the power supply capacity condition 53A of S24, or when the reading rate of S25 is equal to or greater than the threshold of the reading rate condition In the case of , the station mark 21 is image-recognized and returned to the station 14 (S26). That is, when the reading time condition is reached and the reading rate condition is reached, the reading is completed and returned to the station 14, and when the power supply capacity is reduced, the return to the station 14 is performed for charging.

In the management device (personal computer 32, mobile terminal 33), all of the tag information read by the flying object 11 and the missing tag information can be displayed to the administrator. As a result, in the same manner as described above, when the tag information sent to the management device contains missing tag information, it is possible to prompt human confirmation and human supplementary reading. Compared to the case where all RFID tags 16 are read manually, only the missed RFID tags 16 need to be read manually. It can be said that the efficiency is improved in

On the other hand, in the above S24, in the case of return to the station 14 due to the power supply capacity of the flying object power supply 46 falling below the threshold of the power supply capacity condition (S26), on the condition that the reading time condition has not been reached (S23). , waiting for the power source capacity of the power source 46 for the flying object to reach the threshold value or higher or the predetermined capacity or higher (S24), and under the condition that the reading rate condition is less than the threshold value (S25), the process proceeds to FIG. 7B.

In FIG. 7(B), if the reading rate condition is less than the threshold within the range of the reading time condition and the power capacity condition in FIG. From the address information of the missing tag information, the corresponding flying object 11 flies to the address position while recognizing the traveling direction mark 18 (check mark), the reading range marks 17A to 17C, and the flight marks 19 and 20. The RFID tag 16 of the object 15 to be accommodated is read, and the matching tag information is stored in the storage unit 52 by matching with the management tag data 16A, and the read tag information is sent to the management device (personal computer 32, mobile terminal 33) (S31). Then, in the aircraft 11, it is within the reading time of the set reading time condition (S23), and the power monitoring unit 57 determines that the power supply capacity of the aircraft power supply 46 is equal to or greater than the threshold (S24). On the condition that the obtained read rate is less than the threshold value of the read rate condition, reading of the missing tag information is performed based on the address information.

In this way, the reading efficiency (reading rate) can be obtained under limited conditions without requiring manual operation for reading the RFID tags 16 attached to all the objects 15 stored in the product warehouse 12 . can be improved. In addition, when calculating the reading rate by comparing the read tag information with the management tag data, the matching tag information and the missing tag information that do not match are received, and only the missing RFID tags are read in the next cycle. It is possible to shorten the reading time and improve the reading rate by reading the .

In the above embodiment, at least the calculation of the reading rate is performed on the management device side. may be sent to the management device as By the way, in the above embodiment, the RFID tag 16 is read by a single flying object 11 in the product warehouse 12. Further shortening of the time can be achieved.

INDUSTRIAL APPLICABILITY The RFID reader of the present invention can be used in industries such as the manufacture, use, and sale of devices that automatically and unmannedly read objects such as RFID-attached commodities in an environment such as a warehouse.

11 RFID reader (aircraft)
12 Merchandise warehouse 13 Holding shelves 13A to 13C Holding shelf row 14 Station (power supply means)
15 to-be-contained object 16 RFID tag 17A to 17C reading range mark 18 traveling direction mark 19, 20 flight mark 21 station mark 31 communication relay unit 32 personal computer (management device)
33 mobile terminal (management device)
41 Controller 42 Drive Mechanism Section 43 Imaging Section 44 Reader 45 Transmitting and Receiving Section 46 Aircraft Power Supply 46A Charging Section 51 Control Section 52 Storage Section 53 Flight Setting Section 53A Power Capacity Condition 53B Reading Rate Condition 54 Image Analysis Section 55 Reading Information Processing Section 56 Drive control unit 57 Power supply monitoring unit

Claims (8)

An RFID reading device for an aircraft, in which a plurality of objects attached with RFID tags of unique information are accommodated in an area in which at least flight-related marks are arranged, and the RFID tags attached to the objects are read without contact. and
a power source for an aircraft;
power supply monitoring means for monitoring the power supply capacity of the aircraft power supply;
imaging means for imaging at least the flight-related mark;
a tag reading means for reading tag information of an RFID tag attached to the object;
At least, the flight-related mark is imaged and recognized by the imaging means, the tag information of the RFID tag is read by the tag reading means, and the power capacity monitored by the power monitoring means is detected in advance. Within the range of the set power supply capacity condition, the determination of whether or not to circulate in the area until the read rate condition set for the read rate of the read tag information with respect to the number of objects to be accommodated is reached a control means performed upon reaching the base point to be orbited ;
An RFID reader, comprising: 2. The RFID reading apparatus according to claim 1, wherein said control means transmits all the read tag information to a predetermined management device after completion of reading the RFID tag, and manages the tag information of the RFID tag to be read. Information including a read rate calculated by referring to the management tag data is received from the management device provided as tag data, and the device is made to circulate within the area until the set read rate condition is reached. RFID reader. 3. The RFID reader according to claim 2, wherein the information received from the management device includes missing tag information, and the control means reads only the missing RFID tag in subsequent rounds. RFID reader, characterized by: 2. The RFID reader according to claim 1, wherein the control means includes tag information of an RFID tag to be read as management tag data, and compares the read tag information with the management tag data to determine the reading rate. An RFID reader, characterized in that: 5. The RFID reader according to claim 4, wherein the control means compares the tag information of the read RFID tag with the management tag data to calculate the reading rate, and includes matching tag information identification of the tag information, and read only the RFID tag that has been missed in the next cycle. The RFID reader according to at least one of claims 1 to 5, wherein a reading time condition by flight is set in the control means, and the reading is within the range of the reading time condition and within the power supply capacity condition. An RFID reader, characterized in that it circulates within the area under rate conditions. The RFID reader according to at least any one of claims 1 to 6,
A station serving as an initial position for flight is provided in the area and is provided with power supply means for charging the power supply for the aircraft,
An RFID reader, wherein said control means returns to said station when said power supply capacity condition is reached. The RFID reader according to at least any one of claims 1 to 6,
A station serving as an initial position for flight is provided in the area and is provided with power supply means for charging the power supply for the aircraft,
The RFID reader, wherein the control means returns the tag information to the station when the tag information read within the range of the power source capacity condition reaches the reading rate condition.

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