Surveillance and security management systems

Abstract

Appropriately monitor the target. A monitoring system includes a wireless tag disposed on the target and a data acquisition device for acquiring data from the wireless tag, the data acquisition device being movable, wherein the wireless tag has: a storage unit for storing identification information; and a communication unit for transmitting the identification information, the data acquisition device moving in the vicinity of the wireless tag, and the monitoring system storing the identification information acquired by the data acquisition device from the wireless tag when the data acquisition device moves in the vicinity of the wireless tag.

Description

Technical Field

[0001] This invention relates to a monitoring system and a security management system. Background Technology

[0002] Previously, technologies for using RFID (Radio Frequency Identification) tags to read identification information of objects were known. For example, in Patent Document 1, identification information from wireless tags was read using a tag reader device. Furthermore, Patent Document 2 disclosed the use of RFID tags for logistics information management. Patent Document 3 disclosed a method for tracking assets and inventory using RFID tags. Patent Document 4 used a tag reader device to read identification information from wireless tags.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2015-219591

[0006] Patent Document 2: Japanese Patent Application Publication No. 2007-089054

[0007] Patent Document 3: Japanese Patent Application Publication No. 2011-108239

[0008] Patent Document 4: Japanese Patent Application Publication No. 2008-024385 Summary of the Invention

[0009] The problem the invention aims to solve

[0010] According to the systems described in the aforementioned documents, identification information from wireless tags is read using a tag reader device, thus preventing human error. However, when monitoring mechanical devices that transport industrial products along the conveying direction is the target, there is room for improvement in efficiently reading identification information from wireless tags and performing appropriate monitoring.

[0011] The present invention was made in view of the above circumstances, and its object is to provide a surveillance system and a security management system that can efficiently read identification information and appropriately monitor the monitored object.

[0012] Solution for solving the problem

[0013] To address the aforementioned problems and achieve the objective, a surveillance system according to one aspect of this disclosure includes a wireless tag disposed on a monitored object and a data acquisition device for acquiring data from the wireless tag. The data acquisition device is movable. The wireless tag has a storage unit for storing identification information and a communication unit for transmitting the identification information. The data acquisition device moves in the vicinity of the wireless tag, and the surveillance system stores the identification information acquired by the data acquisition device from the wireless tag when the data acquisition device moves in the vicinity of the wireless tag.

[0014] Alternatively, the wireless tag may also have a temperature sensor that detects the temperature of the monitored object and outputs temperature data corresponding to the temperature. The communication unit sends the identification information and the temperature data output by the temperature sensor. The monitoring system monitors the monitored object based on the temperature data and the identification information acquired by the data acquisition device from the wireless tag when it moves near the wireless tag.

[0015] Alternatively, it may include multiple data acquisition devices, with each of the multiple monitored objects having the wireless tag, storing the identification information acquired by the multiple data acquisition devices from the wireless tag when the multiple data acquisition devices move near the wireless tag.

[0016] Alternatively, the communication unit may associate the temperature data with the identification information before sending it.

[0017] Alternatively, the wireless tag may be installed on the bearing, and the monitoring system may also include a monitoring terminal device for monitoring the bearing. The monitoring terminal device has an acquisition data storage unit for storing data acquired by the data acquisition device, and the bearing is monitored based on the data stored in the acquisition data storage unit.

[0018] Alternatively, the wireless tag may further include: a temperature sensor that detects the temperature of the monitored object; and a determination unit that determines whether the temperature detected by the temperature sensor exceeds a predetermined threshold. The storage unit stores the identification information and the determination result of the determination unit indicating that the temperature detected by the temperature sensor exceeds the predetermined threshold. The communication unit transmits the determination result and the identification information. The monitoring system monitors the monitored object based on the determination result and the identification information acquired by the data acquisition device from the wireless tag when the data acquisition device moves near the wireless tag.

[0019] Alternatively, it may include multiple data acquisition devices, with each of the multiple monitored objects having the wireless tag, storing the identification information acquired by the multiple data acquisition devices from the wireless tag when the multiple data acquisition devices move near the wireless tag.

[0020] Alternatively, the communication unit may associate the determination result with the identification information before sending it.

[0021] Alternatively, the wireless tag may be installed on the bearing, and the monitoring system may also include a monitoring terminal device for monitoring the bearing. The monitoring terminal device has an acquisition data storage unit for storing data acquired by the data acquisition device, and the bearing is monitored based on the data stored in the acquisition data storage unit.

[0022] Alternatively, the monitoring terminal device may also include an alarm unit that outputs an alarm based on the determination result.

[0023] Alternatively, the wireless tag may further include: an accelerometer that detects the acceleration of the monitored object; and a determination unit that determines whether the vibration based on the acceleration detected by the accelerometer exceeds a predetermined threshold. The storage unit stores identification information and the determination result of the determination unit indicating that the vibration based on the acceleration detected by the accelerometer exceeds the predetermined threshold. The communication unit transmits the determination result and the identification information. The monitoring system monitors the monitored object based on the determination result and the identification information acquired by the data acquisition device from the wireless tag when the data acquisition device moves near the wireless tag.

[0024] Alternatively, the wireless tag may further include: an accelerometer that detects the acceleration of the monitored object; and a determination unit that determines whether the vibration based on the acceleration detected by the accelerometer exceeds a predetermined threshold. The storage unit stores identification information and the determination result of the determination unit indicating that the vibration based on the acceleration detected by the accelerometer exceeds the predetermined threshold. The communication unit transmits the determination result and the identification information. The monitoring system monitors the monitored object based on the determination result and the identification information acquired by the data acquisition device from the wireless tag when the data acquisition device moves near the wireless tag.

[0025] Alternatively, it may include multiple data acquisition devices, with each of the multiple monitored objects having the wireless tag, storing the identification information acquired by the multiple data acquisition devices from the wireless tag when the multiple data acquisition devices move near the wireless tag.

[0026] Alternatively, the communication unit may associate the determination result with the identification information before sending it.

[0027] Alternatively, the wireless tag may be installed on the bearing, and the monitoring system may also include a monitoring terminal device for monitoring the bearing. The monitoring terminal device has an acquisition data storage unit for storing data acquired by the data acquisition device, and the bearing is monitored based on the data stored in the acquisition data storage unit.

[0028] Alternatively, the monitoring terminal device may also include an alarm unit that outputs an alarm based on the determination result.

[0029] A security management system according to one aspect of this disclosure includes: a plurality of wireless tags, each wireless tag being disposed near a security management object among a plurality of security management objects, and having a temperature sensor for acquiring the temperature of the security management object; a data acquisition device for acquiring multiple temperature data from the plurality of wireless tags; a storage unit for storing the plurality of temperature data acquired by the data acquisition device; a determination unit for determining whether the temperature data stored in the storage unit is above a predetermined threshold; and a display unit for displaying the plurality of temperature data read from the storage unit, wherein the display unit displays the temperature data above the predetermined threshold in a manner different from the other temperature data based on the determination result of the determination unit.

[0030] Alternatively, based on the determination result of the determination unit, if the temperature data value is above a first threshold, the display unit may display the temperature data in a manner different from the other temperature data.

[0031] Alternatively, based on the determination result of the determination unit, if the difference between the temperature data of the object under security management at an adjacent location and the temperature data of the object under security management is a second threshold or higher, the display unit may display the temperature data with the higher value in a manner different from the other temperature data.

[0032] Alternatively, it may include a calculation unit that calculates an average value, and a display unit that, based on the determination result of the determination unit, displays the temperature data in a manner different from the other temperature data if the difference between the average value and the temperature data is greater than or equal to a third threshold.

[0033] Alternatively, the display unit may display the plurality of temperature data in a bar chart, and the display unit may display temperature data that is displayed in a different manner than the other temperature data in the bar chart in a color different from the display color of the other temperature data.

[0034] The effects of the invention

[0035] The monitoring system disclosed herein can appropriately monitor the monitored object. Furthermore, according to this disclosure, it is easy to determine whether the temperature obtained from the wireless tag is an appropriate value. Attached Figure Description

[0036] Figure 1 This is a diagram illustrating a monitoring system according to a first embodiment of the present disclosure.

[0037] Figure 2 This is a diagram illustrating an example of the objects monitored by the monitoring system.

[0038] Figure 3 It is shown Figure 2 A three-dimensional diagram of an example of a mechanical component.

[0039] Figure 4 This diagram illustrates an example of monitoring multiple mechanical devices.

[0040] Figure 5 This is a flowchart illustrating an example of the operation of the monitoring system according to the first embodiment.

[0041] Figure 6 This is a diagram illustrating an example of data acquired by a tag reader device from a wireless tag.

[0042] Figure 7 This is a diagram showing an example of temperature measurement results for each shaft component.

[0043] Figure 8 This is a diagram showing an example of temperature measurement results for a shaft component.

[0044] Figure 9 This is a diagram showing an example of temperature measurement results for a shaft component.

[0045] Figure 10 This is a diagram showing an example of temperature measurement results for a shaft component.

[0046] Figure 11 This is a diagram illustrating a monitoring system according to a second embodiment of the present disclosure.

[0047] Figure 12 This is a flowchart illustrating an example of the operation of the monitoring system according to the second embodiment.

[0048] Figure 13 This is a diagram illustrating a tag reader device of a monitoring system according to a third embodiment of the present disclosure.

[0049] Figure 14 This is a diagram illustrating a monitoring system according to a fourth embodiment of the present disclosure.

[0050] Figure 15 It is shown Figure 14A diagram illustrating the structure of the decision-making section.

[0051] Figure 16 This diagram illustrates an example of monitoring multiple mechanical devices.

[0052] Figure 17 This is a flowchart illustrating an example of the operation of the monitoring system according to the fourth embodiment.

[0053] Figure 18 This is a diagram illustrating an example of data acquired by a tag reader device from a wireless tag.

[0054] Figure 19 This is a diagram illustrating a monitoring system according to a sixth embodiment of the present disclosure.

[0055] Figure 20 It is shown Figure 19 A diagram illustrating the structure of the decision-making section.

[0056] Figure 21 This is a diagram illustrating an example of data acquired by a tag reader device from a wireless tag.

[0057] Figure 22 This is a diagram illustrating the security management system according to the seventh embodiment of this disclosure.

[0058] Figure 23 This is a diagram showing an example of a security management object in a security management system.

[0059] Figure 24 This is a flowchart illustrating an example of the operation of the security management system according to the seventh embodiment.

[0060] Figure 25 It is shown Figure 22 The flowchart shows the first example of processing in the control unit of the security management device.

[0061] Figure 26 This is a diagram illustrating an example of data acquired by a tag reader device from a wireless tag.

[0062] Figure 27 It is shown Figure 22 The flowchart shows the second example of processing in the control unit of the security management device.

[0063] Figure 28 This is a diagram illustrating the security management system of the ninth embodiment of this disclosure.

[0064] Figure 29 It is shown Figure 28 The flowchart of the third example of processing in the control unit of the security management device. Detailed Implementation

[0065] Hereinafter, embodiments of the present invention will be described in detail based on the accompanying drawings. In the following descriptions of each embodiment, the same reference numerals are used to denote the same or equivalent components as in other embodiments, and their descriptions are simplified or omitted. The present invention is not limited to each embodiment. Furthermore, the constituent elements of each embodiment include constituent elements that can be easily substituted by those skilled in the art, or substantially the same constituent elements. The structures described below can be appropriately combined. The omission, substitution, or modification of the structure can be made without departing from the spirit of the invention. In addition, descriptions of matters common to the first embodiment are sometimes appropriately omitted after the second embodiment.

[0066] (First Implementation)

[0067] Figure 1 This is a diagram illustrating a monitoring system according to a first embodiment of the present disclosure. Figure 1 In this system, the monitoring system 100 includes a wireless tag 10, a tag reader device 20, and a monitoring terminal device 30. The wireless tag 10 is disposed on the monitored object of the monitoring system 100. The tag reader device 20 is capable of acquiring data from the wireless tag 10. In addition, the tag reader device 20 is capable of writing data to the wireless tag 10. The tag reader device 20 is equivalent to the data acquisition device of this disclosure.

[0068] (Wireless Tag)

[0069] The wireless tag 10 includes an antenna 11, a temperature sensor 12, a control unit 13, and a power supply unit 14. The control unit 13 includes a communication unit 131 and a storage unit 132. The wireless tag 10 is, for example, an RFID tag.

[0070] Antenna 11 is a transceiver antenna. That is, antenna 11 has the function of both a transmitting antenna and a receiving antenna.

[0071] Temperature sensor 12 detects temperature. Specifically, temperature sensor 12 detects the temperature of the monitored object to which wireless tag 10 is attached. The temperature detected by temperature sensor 12 is stored as temperature data in storage unit 132 of control unit 13. That is, temperature sensor 12 outputs temperature data corresponding to the temperature.

[0072] The communication unit 131 is capable of receiving data wirelessly via the antenna 11. The communication unit 131 is also capable of transmitting data wirelessly via the antenna 11.

[0073] The storage unit 132 stores identification information 1320 for identifying the wireless tag 10 itself. Additionally, the storage unit 132 stores the temperature detected by the temperature sensor 12 as temperature data. The data stored in the storage unit 132 can be read.

[0074] The power supply unit 14 supplies power to various components within the wireless tag 10. The power supply unit 14 is, for example, a primary battery. Because power is supplied from the power supply unit 14, the wireless tag 10 is able to detect temperature by the temperature sensor 12 and save the temperature data to the storage unit 132.

[0075] When a data readout signal is sent from the tag reader device 20, the wireless tag 10 reads the data stored in the storage unit 132 and sends it to the tag reader device 20. At this time, the communication unit 131 of the wireless tag 10 associates the temperature data with the identification information and sends it to the tag reader device 20.

[0076] (Tag reader device)

[0077] The tag reader device 20 includes an antenna 21, a control unit 22, a power supply unit 23, and a motor 24.

[0078] Antenna 21 is a transceiver antenna. That is, antenna 21 has the function of both a transmitting antenna and a receiving antenna.

[0079] The control unit 22 includes a communication unit 221, a storage unit 222, a reading unit 223, a writing unit 224, and a driving unit 225. The communication unit 221 can wirelessly transmit and receive data with the wireless tag 10 via the antenna 21. Additionally, the communication unit 221 can transmit and receive data with the monitoring terminal device 30 via a network NW. The tag reader device 20 can transmit temperature data from the temperature sensor 12 of the wireless tag 10 to the monitoring terminal device 30.

[0080] Storage unit 222 stores the data acquired by communication unit 221. Storage unit 222 associates the temperature data acquired by communication unit 221 with identification information and stores it. In addition, storage unit 222 stores various data and programs required for the operation of tag reader device 20.

[0081] The reading unit 223, utilizing the antenna 21 and the communication unit 221, is capable of receiving data transmitted from the wireless tag 10 and reading data stored in the wireless tag 10. Thus, the tag reader device 20 can acquire data from the wireless tag 10.

[0082] The reading unit 223 can simultaneously communicate wirelessly with multiple wireless tags 10, and can simultaneously acquire temperature data from multiple wireless tags 10. At this time, the acquisition is performed while the identification information is associated with the temperature data. Therefore, the tag reader device 20 acquires the temperature data from each temperature sensor of the multiple wireless tags 10 in a relatively short time. The tag reader device 20 then transmits the temperature data from the multiple temperature sensors to the monitoring terminal device 30.

[0083] The writing unit 224 can transmit data to the wireless tag 10 using the antenna 21 and the communication unit 221. Therefore, the tag reader device 20 can write data to the wireless tag 10. The drive unit 225 controls the motor 24 to move the tag reader device 20.

[0084] The power supply unit 23 supplies power to various parts within the tag reader device 20. The power supply unit 23 is, for example, a primary battery.

[0085] (Monitoring terminal device)

[0086] The monitoring terminal device 30 includes a communication unit 31, a storage unit 32, a control unit 33, and a power supply unit 34. The communication unit 31 can send and receive data with the tag reader device 20 via a network NW. The monitoring terminal device 30 can be installed either near the tag reader device 20 or at a distance.

[0087] The storage unit 32 stores data acquired by the tag reader device 20 from the wireless tag 10. The storage unit 32 is equivalent to the data acquisition and storage unit of this disclosure. The control unit 33 includes, for example, a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), an input interface, and an output interface (not shown). The CPU, ROM, and RAM (not shown) are connected by an internal bus. Programs such as the BIOS are stored in the ROM. The CPU performs various functions by using the RAM as its working area while executing programs stored in the ROM or storage unit 32. The control unit 33 can classify, sort, and edit the data stored in the storage unit 32. The power supply unit 34 supplies power to each part of the monitoring terminal device 30.

[0088] (Example of a monitored object)

[0089] Figure 2 This is a diagram illustrating an example of the objects monitored by the monitoring system. Figure 2 This diagram illustrates a situation where the mechanical device 200 is being monitored. Figure 3 It is shown Figure 2 A perspective view of an example of mechanical component 40.

[0090] exist Figure 2 In this embodiment, the mechanical device 200 is, for example, a roller conveyor that transports industrial products (not shown) along a conveying direction. The mechanical device 200 includes a pair of support platforms 70 and a plurality of roller devices 60. In this embodiment, the number of roller devices 60 is 10, but is not limited to this number.

[0091] A pair of support platforms 70 support multiple roller devices. The pair of support platforms 70 are cuboids extending along the conveying direction of the industrial products, i.e., in the direction of arrow Y1.

[0092] The roller assembly 60 includes a roller member 50 and a pair of mechanical parts 40. The mechanical parts 40 are the subject of this disclosure.

[0093] The roller assembly 60 includes a shaft member 41 and a roller member 50. The shaft member is cylindrical in shape and extends along a central axis.

[0094] The roller member 50 is a cylindrical shape disposed on the circumferential side of the shaft member 41 and rotates integrally with the shaft member 41. Both ends of the shaft member 41 protrude from the roller member 50.

[0095] A pair of mechanical components support the roller member 50 so that it can rotate relative to each other. Specifically, a pair of mechanical components support the two ends of the shaft member so that they can rotate relative to each other. The mechanical component 40 is, for example, a plummer block.

[0096] In addition, such as Figure 2 As shown, the tag reader device 20 moves near the mechanical device 200. The tag reader device 20 moves to a location where it can transmit and receive signals with the wireless tag 10. That is, the tag reader device 20 acquires data from the wireless tag 10 while circling around. The tag reader device 20 moves, for example, along a track installed on the floor or ceiling of the room where the mechanical device 200 is located. Alternatively, there may be no track, and the tag reader device 20 moves along a pre-set path on the floor. For example, a program that controls the motor 24 to move automatically along the pre-set path is stored in the storage unit 222. Then, the program is read and executed in the control unit 22.

[0097] like Figure 3 As shown, the mechanical component 40 has a bearing 42 and holes 44a and 44b. The end of the shaft member 41 of the roller member 50 is inserted into the through hole 43 of the bearing 42. The bearing 42 supports the shaft member 41 in a rotatable manner. The mechanical component 40 is fixed to the support platform 70 (see reference 1) for example by bolts (not shown). Figure 2 Bolts, not shown, such as through holes 44a and 44b, are inserted into threaded holes in the support 70.

[0098] Additionally, a wireless tag 10 is provided on the mechanical component 40. The wireless tag 10 is, for example, located on the underside of the bearing 42. The wireless tag 10 is attached to the surface of the mechanical component 40, for example, using adhesive tape. As described above, the wireless tag 10 has a temperature sensor 12. The temperature data detected by the temperature sensor 12 is stored in the storage unit 132 within the wireless tag 10, thereby transmitting the temperature data along with identification information 1320 to the tag reader device 20.

[0099] exist Figure 2 In the example shown, a tag reader device 20 is provided for a mechanical device 200. The mechanical device 200 has 10 roller members 50, and a total of 20 mechanical parts 40, each located at both ends of each roller member 50, are equipped with wireless tags 10. In this example, all the wireless tags 10 of the 20 mechanical parts 40 are located within the communication range of the tag reader device 20. Therefore, the tag reader device 20 can obtain identification information and temperature data from each of the 20 wireless tags 10 located on the 20 mechanical parts 40.

[0100] Alternatively, a wireless tag 10 may be provided on one side of the mechanical component 40 at one end of the roller member 50, while no wireless tag 10 may be provided on the mechanical component 40 on the other side. Alternatively, wireless tags 10 may be provided only on a portion of the multiple mechanical components 40 provided in the mechanical device 200, and these portions may be used as monitoring targets.

[0101] Figure 4 This diagram illustrates an example of monitoring multiple mechanical devices 200. Figure 4 In the example shown, three mechanical devices 200a, 200b, and 200c are used as monitoring objects. Figure 4 In the example shown, a tag reader device 20 is provided for three mechanical devices 200a, 200b, and 200c. The tag reader device 20 moves around the three mechanical devices 200a, 200b, and 200c, for example, as indicated by arrow Y2. In this example, the tag reader device at its position before movement is marked with the symbol "20", and the tag reader device at its position after movement is marked with the symbol "20'".

[0102] Here, within the communication range 120 of the tag reader device 20 before movement, all mechanical parts 40 included in mechanical device 200a and a portion of mechanical parts 40 included in mechanical device 200b are provided. On the other hand, within the communication range 120' of the tag reader device 20' at the moved position, all mechanical parts 40 included in mechanical device 200c and a portion of mechanical parts 40 included in mechanical device 200b are provided. In this way, the tag reader device 20 moves such that all mechanical parts 40 are provided within the range formed by combining the communication range 120 and the communication range 120', thereby enabling the tag reader device 20 to obtain identification information and temperature data from each wireless tag 10 respectively.

[0103] Return to Figure 1The identification information and temperature data obtained from each wireless tag 10 are stored in the storage unit 222 and then transmitted to the monitoring terminal device 30 via the network NW. The monitoring terminal device 30 stores the identification information and temperature data in the storage unit 32. The control unit 33 can classify, sort, and edit the data stored in the storage unit 32.

[0104] The temperature sensors 12 of each wireless tag 10 detect the temperature at a predetermined interval, for example. For instance, the temperature sensors 12 may detect the temperature once a day at a predetermined time. Alternatively, they may detect the temperature at predetermined intervals, such as every hour, every 30 minutes, every minute, or every 30 seconds.

[0105] Identification information and temperature data can be sent to the tag reader device 20 either each time the wireless tag 10 detects temperature, or they can be sent to the tag reader device 20 in a concentrated manner when the amount of data stored in the storage unit 132 of the wireless tag 10 reaches a predetermined amount. In the former case, monitoring processing can be performed more quickly. In the latter case, centralized transmission further reduces the power consumption of the power supply unit 14. As described above, the monitoring system can acquire temperature data for each monitored object identified by the acquired identification information and monitor for anomalies in the temperature data.

[0106] (Example of action)

[0107] Figure 5 This is a flowchart illustrating an example of the operation of the monitoring system 100 according to the first embodiment. Figure 5 The operation of the wireless tag 10, tag reader device 20 and monitoring terminal device 30 of the monitoring system 100 is shown.

[0108] exist Figure 5 In this process, steps S101 to S106 represent an example of the operation of the wireless tag 10, steps S200 to S205 represent an example of the operation of the tag reader device 20, and steps S301 to S302 represent an example of the operation of the monitoring terminal device 30.

[0109] exist Figure 5 In the process, the wireless tag 10 obtains temperature data from the temperature sensor 12 in advance (step S101) and stores it in the storage unit 132 (step S102).

[0110] Subsequently, the tag reader device 20 begins to move (step S200). When the tag reader device 20 sends a data readout signal to the wireless tag 10 (step S201), the wireless tag 10 receives the readout signal (step S103). Then, the wireless tag 10 acquires temperature data from the temperature sensor 12 (step S104) and reads the identification information stored in the storage unit 132 (step S105). The wireless tag 10 transmits the temperature data along with the identification information (step S106), and the tag reader device 20 receives the temperature data (step S202).

[0111] The tag reader device 20 stores the received temperature data and identification information in the storage unit 222 (step S203). Then, the tag reader device 20 sends the temperature data and identification information (step S204), and the monitoring terminal device 30 receives the temperature data and identification information (step S301). The tag reader device 20 stops moving (step S205). The monitoring terminal device 30 stores the received temperature data and identification information in the storage unit 32 (step S302). Through the above processing, the monitoring terminal device 30 can acquire temperature data and identification information, and can classify, sort, and edit the data stored in the storage unit 32. By utilizing the data stored in the storage unit 32, the monitored object can be monitored. That is, the monitoring system can monitor for anomalies in the temperature data of each monitored object identified by the acquired identification information.

[0112] (Example of temperature data)

[0113] Figure 6 This is a diagram illustrating an example of data acquired by the tag reader device 20 from the wireless tag 10. Figure 6 An example of data sent from the tag reader device 20 to the monitoring terminal device 30 and stored in the storage unit 32 is shown.

[0114] like Figure 6 As shown, the RFID identification information "rfid0001", "rfid0002", etc., are stored in the storage unit 32 in association with other data. For example, the identification information "rfid0001" is associated with the acquisition time (i.e., year, month, day, hour, and minute), the bearing identification information (ID) i.e., the serial number (s / n), and the measured temperature based on the temperature data. In this example, it is also associated with the year, month, and day and content of the last maintenance (e.g., grease replenishment, adding to the checklist), the year, month, and day and content of the next recommended maintenance, the year, month, and day of the start date of operation, the year, month, and day and content of past maintenance history, the device name, unit name, and measured temperature as device information.

[0115] The unit name is an identification reference. Figure 2 and Figure 4Information about the shaft components. For example, "shaft 1-1", "shaft 1-2", "shaft 1-3", "shaft 1-4", "shaft 2-1", "shaft 2-2", "shaft 3-1", "shaft 3-2", "shaft 3-3", "shaft 3-4".

[0116] Figure 7 This is a diagram showing examples of temperature measurement results for each shaft component. The monitoring terminal device 30 is capable of editing... Figure 6 The data shown is displayed on screens not shown in the figure. Figure 7 The chart shown.

[0117] Figures 8 to 10 This is a diagram showing an example of temperature measurement results for a shaft component. Figures 8 to 10 This is a diagram showing an example of the temperature measurement results for shaft 2-1. Figure 8 This shows the average temperature data for a certain period (e.g., one day) related to axis 2-1. Figure 8 In the example shown, temperature measurements are not taken on non-working days such as "May 1st", therefore there is no temperature data for non-working days.

[0118] Figure 9 This shows the average temperature data for a certain period (e.g., one day) of axis 2-1. Figure 9 In the example shown, since temperature measurements are also taken for non-working days such as "May 1st", temperature data exists even for non-working days.

[0119] Figure 10 The temperature data for the time series about axis 2-1 is shown. Figure 10 The example shown illustrates the results measured every 30 seconds. This allows for increasing the measurement frequency. The measurement frequency can also be increased for axes added to the checklist.

[0120] (Second Implementation)

[0121] Figure 11 This is a diagram illustrating a monitoring system according to a second embodiment of the present disclosure. Figure 11 The difference between the surveillance system 100a in the second embodiment and the surveillance system 100 in the first embodiment is that it includes a wireless tag 10a, which does not have a power supply. The wireless tag 10a operates using power based on electromagnetic waves transmitted by the tag reader device 20. That is, when the antenna 11 of the wireless tag 10a receives electromagnetic waves transmitted from the tag reader device 20, a current flows through it induction by the received electromagnetic waves. The wireless tag 10a uses this current as its power source to operate.

[0122] Furthermore, in the monitoring system of the first embodiment described above, the temperature sensors 12 of each wireless tag 10 detect the temperature at a predetermined interval, and store the data sequentially in the storage unit 132. Then, when a readout signal is sent from the tag reader device 20 to the wireless tag 10, the stored temperature data and identification information are sent from the wireless tag 10 to the tag reader device 20.

[0123] In contrast, in the monitoring system 100a of the second embodiment, when a readout signal is sent from the tag reader device 20 to the wireless tag 10, the temperature is detected by the temperature sensor 12. That is, the wireless tag 10 is activated by the power of the electromagnetic wave based on the readout signal, and the temperature is detected by the temperature sensor 12. The other operations of the monitoring system 100a are the same as those of the monitoring system 100 of the first embodiment.

[0124] (Example of action)

[0125] Figure 12 This is a flowchart illustrating an example of the operation of the monitoring system 100a according to the second embodiment. Figure 12 The operation of the wireless tag 10, tag reader device 20 and monitoring terminal device 30 of the monitoring system 100a is shown.

[0126] exist Figure 12 In this process, steps S103 to S106 represent an example of the operation of the wireless tag 10, steps S200 to S205 represent an example of the operation of the tag reader device 20, and steps S301 to S302 represent an example of the operation of the monitoring terminal device 30.

[0127] exist Figure 12 In step S200, the tag reader device 20 begins to move. Then, when the tag reader device 20 sends a read signal to the wireless tag 10 (step S201), the wireless tag 10 receives the read signal (step S103). The wireless tag 10 then acquires temperature data from the temperature sensor 12 (step S104) and reads the temperature data and identification information stored in the storage unit 132 (step S105). The wireless tag 10 transmits the temperature data and identification information together (step S106), and the tag reader device 20 receives the temperature data (step S202).

[0128] Subsequent actions and references Figure 5The operation of the monitoring system 100 described herein is the same. That is, the tag reader device 20 stores the received temperature data and identification information in the storage unit 222 (step S203). Then, the tag reader device 20 sends the temperature data and identification information (step S204), and the monitoring terminal device 30 receives the temperature data and identification information (step S301). The tag reader device 20 stops moving (step S205). The monitoring terminal device 30 stores the received temperature data and identification information in the storage unit 32 (step S302). Through the above processing, the monitoring terminal device 30 can acquire temperature data and identification information, and can classify, sort, and edit the data stored in the storage unit 32. By utilizing the data stored in the storage unit 32, the monitored object can be monitored.

[0129] (Third Implementation)

[0130] In the monitoring systems of the first and second embodiments described above, one tag reader device 20 is used, but multiple tag reader devices may also be used. Figure 13 This is a diagram illustrating a tag reader device of a monitoring system according to a third embodiment of this disclosure. Figure 13 As shown, the monitoring system of the third embodiment uses two tag reader devices 20a and 20b. Tag reader device 20a moves near three mechanical devices 200a, 200b, and 200c, for example, as indicated by arrow Y3. In this example, the tag reader device at its previous position is labeled "20a," and the tag reader device at its current position is labeled "20a'." Similarly, tag reader device 20b moves near the three mechanical devices 200a, 200b, and 200c, for example, as indicated by arrow Y4. In this example, the tag reader device at its previous position is labeled "20b," and the tag reader device at its current position is labeled "20b'."

[0131] The communicable range 120a of the tag reader device 20a before relocation includes all mechanical components 40 included in mechanical device 200a and a portion of mechanical components 40 included in mechanical device 200b. Similarly, the communicable range 120b of the tag reader device 20b before relocation includes all mechanical components 40 included in mechanical device 200a and a portion of mechanical components 40 included in mechanical device 200b. On the other hand, the communicable range 120a' of the tag reader device 20a' at the relocated position includes all mechanical components 40 included in mechanical device 200c and a portion of mechanical components 40 included in mechanical device 200b. Furthermore, the communicable range 120b' of the tag reader device 20b' at the relocated position includes all mechanical components 40 included in mechanical device 200c and a portion of mechanical components 40 included in mechanical device 200b. In this way, multiple tag reader devices 20a and 20b move such that all mechanical components 40 are arranged within a range combining the pre-movement communication range 120a and 120b and the post-movement communication range 120a' and 120b', thereby enabling the tag reader devices 20a and 20b to acquire identification information and temperature data from each wireless tag 10. The identification information and temperature data acquired by the multiple tag reader devices 20a and 20b are sent to the monitoring terminal device 30 and stored in the storage unit 32 within the monitoring terminal device 30. That is, the identification information and temperature data are stored in the storage unit 32 shared by the multiple tag reader devices 20a and 20b. The movement of the multiple tag reader devices 20a and 20b enables reliable acquisition of identification information and temperature data from each wireless tag 10 on all mechanical components 40. In particular, when the antennas of each tag reader device 20a and 20b have different directivity, identification information and temperature data can be reliably acquired by moving multiple tag reader devices.

[0132] In the embodiments described above, identification information and temperature data are transmitted from the wireless tag to the tag reader device, but it is also possible to transmit only the identification information from the wireless tag to the tag reader device. In this way, the tag reader device can receive the identification information and determine the number of mechanical parts being monitored, etc.

[0133] According to the monitoring system 100 of the first embodiment, the monitoring system 100a of the second embodiment, and the monitoring system of the third embodiment described above, maintenance personnel can monitor production equipment in factory premises or other production facilities without having to go directly to the vicinity of the machinery. Specifically, it is possible to detect abnormalities associated with temperature changes and to identify the bearing. For example, temperature monitoring and handling can be performed in a remote control room. In each of the above embodiments, bearings are used as the monitoring object, but this is not the only limitation; for example, monitoring of shaft elongation caused by heat, motor rated operation, etc., can be performed. Furthermore, in each of the above embodiments, the use of a motor for self-movement is assumed, but the moving unit is not limited to this; it can also be applied to aerial moving units such as drones.

[0134] (Fourth Implementation)

[0135] Figure 14 This is a diagram illustrating a monitoring system according to a fourth embodiment of this disclosure. Figure 14 In this system, monitoring system 100b includes a wireless tag 10b, a tag reader device 20, and a monitoring terminal device 30a. The wireless tag 10b is disposed on the monitored object of monitoring system 100b. The tag reader device 20 is capable of acquiring data from the wireless tag 10b. Additionally, the tag reader device 20 is capable of writing data to the wireless tag 10b. The tag reader device 20 is equivalent to the data acquisition device of this disclosure.

[0136] (Wireless Tag)

[0137] The wireless tag 10b includes an antenna 11, a temperature sensor 12, a control unit 13, a power supply unit 14, and a determination unit 15. The control unit 13 includes a communication unit 131 and a storage unit 132. The wireless tag 10b is, for example, an RFID tag.

[0138] Antenna 11 is a transceiver antenna. That is, antenna 11 has the function of both a transmitting antenna and a receiving antenna.

[0139] Temperature sensor 12 detects temperature. Specifically, temperature sensor 12 detects the temperature of the monitored object to which wireless tag 10b is attached. The temperature detected by temperature sensor 12 is sent to decision unit 15.

[0140] The communication unit 131 is capable of receiving data wirelessly via the antenna 11. The communication unit 131 is also capable of transmitting data wirelessly via the antenna 11.

[0141] The storage unit 132 stores identification information 1320 for identifying the wireless tag 10b itself. Additionally, the storage unit 132 stores the determination result of the determination unit 15 as data. The data stored in the storage unit 132 can be read.

[0142] The power supply unit 14 supplies power to various components within the wireless tag 10b. The power supply unit 14 is, for example, a primary battery. Because power is supplied from the power supply unit 14, the wireless tag 10b is able to detect the temperature by the temperature sensor 12 and save the temperature determination result based on the temperature data to the storage unit 132.

[0143] The determination unit 15 determines whether the detected temperature value output by the temperature sensor 12 exceeds a predetermined threshold. The determination result of the determination unit 15 is stored in the storage unit 132. For example, if the detected temperature value output by the temperature sensor 12 exceeds the predetermined threshold, the determination result data of the determination unit 15 is "1", and if the detected value is below the predetermined threshold, the determination result data of the determination unit 15 is "0". The determination result "1" or "0" is stored in the storage unit 132.

[0144] For example, a threshold value for temperature detection is set as follows: that is, the temperature is measured in advance when no abnormality occurs in the mechanical device 200, and a value slightly exceeding that temperature is set as the threshold value.

[0145] When a data readout signal is sent from the tag reader device 20, the wireless tag 10b reads the data stored in the storage unit 132 and sends it to the tag reader device 20. At this time, the communication unit 131 of the wireless tag 10b associates the temperature determination result with the identification information and sends it to the tag reader device 20.

[0146] (Tag reader device)

[0147] The tag reader device 20 includes an antenna 21, a control unit 22, a power supply unit 23, and a motor 24.

[0148] Antenna 21 is a transceiver antenna. That is, antenna 21 has the function of both a transmitting antenna and a receiving antenna.

[0149] The control unit 22 includes a communication unit 221, a storage unit 222, a reading unit 223, a writing unit 224, and a driving unit 225. The communication unit 221 can wirelessly transmit and receive data with the wireless tag 10b via the antenna 21. Additionally, the communication unit 221 can transmit and receive data with the monitoring terminal device 30 via the network NW. The tag reader device 20 can send the temperature determination result based on the temperature data from the temperature sensor 12 of the wireless tag 10b to the monitoring terminal device 30.

[0150] Storage unit 222 stores the data acquired by communication unit 221. Storage unit 222 associates the temperature determination results acquired by communication unit 221 with the identification information and stores them. In addition, storage unit 222 stores various data and programs required for the operation of tag reader device 20.

[0151] The reading unit 223, utilizing the antenna 21 and the communication unit 221, is capable of receiving data transmitted from the wireless tag 10b and reading data stored in the wireless tag 10b. Thus, the tag reader device 20 can acquire data from the wireless tag 10b.

[0152] The reading unit 223 can simultaneously communicate wirelessly with multiple wireless tags 10b, and can simultaneously acquire temperature determination results from multiple wireless tags 10b. At this time, the acquisition is performed while the identification information is associated with the temperature determination results. Therefore, the tag reader device 20 acquires the temperature determination results based on the temperature data of each temperature sensor of the multiple wireless tags 10b in a relatively short time. The tag reader device 20 then sends the temperature determination results based on the temperature data of the multiple temperature sensors to the monitoring terminal device 30.

[0153] The writing unit 224 can transmit data to the wireless tag 10b using the antenna 21 and the communication unit 221. Therefore, the tag reader device 20 can write data to the wireless tag 10b. The drive unit 225 controls the motor 24 to move the tag reader device 20.

[0154] The power supply unit 23 supplies power to various parts within the tag reader device 20. The power supply unit 23 is, for example, a primary battery.

[0155] (Monitoring terminal device)

[0156] The monitoring terminal device 30 includes a communication unit 31, a storage unit 32, a control unit 33, a power supply unit 34, and an alarm unit 37. The communication unit 31 can send and receive data with the tag reader device 20 via a network NW. The monitoring terminal device 30 can be installed either near the tag reader device 20 or at a distance.

[0157] The storage unit 32 stores data acquired by the tag reader device 20 from the wireless tag 10b. The storage unit 32 is equivalent to the data acquisition and storage unit of this disclosure. The control unit 33 includes, for example, a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), an input interface, and an output interface (not shown). The CPU, ROM, and RAM (not shown) are connected by an internal bus. Programs such as the BIOS are stored in the ROM. The CPU performs various functions by using the RAM as its working area while executing programs stored in the ROM or storage unit 32. The control unit 33 can classify, sort, and edit the data stored in the storage unit 32. The power supply unit 34 supplies power to each part of the monitoring terminal device 30.

[0158] The alarm unit 37 outputs an alarm when the determination result of the determination unit 15 of the wireless tag 10b indicates that the temperature exceeds a predetermined threshold. That is, the alarm unit 37 outputs an alarm based on the determination result of the determination unit 15. For example, if the determination result exceeds the predetermined threshold, an alarm is output through displaying a picture on a display unit (not shown) or by emitting a buzzer sound from a speaker (not shown). This allows maintenance personnel to recognize that an abnormal temperature has occurred.

[0159] Figure 15 It is shown Figure 14 A diagram illustrating the structure of the determination unit 15. Figure 15 The determination unit 15 shown includes a comparator 151 and resistors R1 and R2. The comparator 151 has a positive input terminal (+) and a negative input terminal (-).

[0160] Resistors R1 and R2 are connected in series between the power supply voltage VDD and the ground potential. The junction of resistors R1 and R2 is connected to the negative input terminal of comparator 151. The voltage value resulting from the voltage divider formed by resistors R1 and R2 is input to the negative input terminal of comparator 151. Comparator 151 outputs a voltage value corresponding to the comparison result between the voltage value at the negative input terminal and the voltage value at the positive input terminal. That is, comparator 151 outputs a high-level voltage value (H) when the voltage value at the positive input terminal exceeds the voltage value at the negative input terminal, and outputs a low-level voltage value (L) when the voltage value at the positive input terminal is lower than the voltage value at the negative input terminal.

[0161] As described above, the determination unit 15 determines the temperature sensor 12 (refer to...) Figure 14 The temperature detected by the comparator 151 is used to determine whether it exceeds a threshold value based on the voltage value after resistor voltage division. For example, the high-level voltage value (H) output by the comparator 151 is associated with "1", and the low-level voltage value (L) is associated with "0". Therefore, if the data output from the determination unit 15 is "1", it indicates that the temperature detected by the temperature sensor 12 exceeds the specified threshold. Return to Figure 14 The data output from the determination unit 15 is stored in the storage unit 132. That is, the storage unit 132 stores the determination result and identification information of the determination unit 15.

[0162] (Example of a monitored object)

[0163] Monitoring object and reference in the fourth embodiment Figure 2 and Figure 3 The objects of surveillance mentioned above are the same.

[0164] Similar to the first embodiment, the tag reader device 20 of the fourth embodiment is in the mechanical device 200 (see reference 200). Figure 2The tag reader device 20 moves to a location where it can transmit and receive signals with the wireless tag 10b. That is, the tag reader device 20 acquires data from the wireless tag 10b while circling around. The tag reader device 20 may move, for example, along a track installed on the floor or ceiling of a room where the mechanical device 200 is installed. Alternatively, there may be no track, and the tag reader device 20 may move along a pre-set path on the ground. For example, a program controlling the motor 24 to move automatically along a pre-set path may be stored in the storage unit 222. Then, the program can be read and executed in the control unit 22. Alternatively, the tag reader device 20 may be pre-mounted on a drone, which moves to a location where it can transmit and receive signals with the wireless tag 10b.

[0165] Figure 16 This diagram illustrates an example of monitoring multiple mechanical devices 200. Figure 16 In the example shown, three mechanical devices 200a, 200b, and 200c are used as monitoring objects. Figure 5 In the example shown, a tag reader device 20a is provided for three mechanical devices 200a, 200b, and 200c. The tag reader device 20a moves near the three mechanical devices 200a, 200b, and 200c, for example, as shown by arrow Y2. In this example, the tag reader device at its position before movement is marked with the symbol "20", and the tag reader device at its position after movement is marked with the symbol "20'".

[0166] Here, within the communication range 120 of the tag reader device 20a before movement, all mechanical parts 40 included in mechanical device 200a and a portion of mechanical parts 40 included in mechanical device 200b are provided. On the other hand, within the communication range 120' of the tag reader device 20a' at the moved position, all mechanical parts 40 included in mechanical device 200c and a portion of mechanical parts 40 included in mechanical device 200b are provided. In this way, the tag reader device 20a moves such that all mechanical parts 40 are provided within the range formed by combining the communication range 120 and the communication range 120', thereby enabling the tag reader device 20a to obtain identification information and temperature determination results from each wireless tag 10b.

[0167] Return to Figure 14 The identification information and temperature determination results obtained from each wireless tag 10b are stored in the storage unit 222 and then sent to the monitoring terminal device 30a via the network NW. The monitoring terminal device 30a stores the identification information and temperature determination results in the storage unit 32. The control unit 33 can classify, sort, and edit the data stored in the storage unit 32.

[0168] The temperature sensors 12 of each wireless tag 10b detect the temperature at a predetermined interval, for example. For instance, the temperature sensors 12 may detect the temperature once a day at a predetermined time. Alternatively, they may detect the temperature at predetermined intervals, such as every hour, every 30 minutes, every minute, or every 30 seconds.

[0169] Regarding the temperature detected by temperature sensor 12, the determination unit 15 determines whether it exceeds a predetermined threshold. The identification information and the temperature determination result are stored in the storage unit 132. As described above, the monitoring system can acquire the temperature determination result of each monitored object identified by the acquired identification information and monitor for temperature anomalies.

[0170] (Example of action)

[0171] Figure 17 This is a flowchart illustrating an example of the operation of the monitoring system 100b according to the fourth embodiment. Figure 17 The operation of the wireless tag 10b, tag reader device 20, and monitoring terminal device 30a of the monitoring system 100b is shown.

[0172] exist Figure 16 In this process, steps S101 to S106 represent an example of the operation of the wireless tag 10b, steps S200 to S205 represent an example of the operation of the tag reader device 20, and steps S301 to S302 represent an example of the operation of the monitoring terminal device 30a.

[0173] exist Figure 16 In step S101, the wireless tag 10b acquires temperature data from the temperature sensor 12. Next, the wireless tag 10b determines in the determination unit 15 whether the temperature exceeds a predetermined threshold (i.e., whether it is greater than the threshold) (step S101a). If the temperature data exceeds the predetermined threshold, the data indicating that the temperature data exceeds the predetermined threshold is stored in the storage unit 132 as a temperature determination result (step S102). If the temperature data does not exceed the predetermined threshold in step S101a, the process returns to step S101 to continue processing.

[0174] Subsequently, the tag reader device 20 begins to move (step S200). When the tag reader device 20 sends a data readout signal to the wireless tag 10b (step S201), the wireless tag 10b receives the readout signal (step S103). Then, the wireless tag 10b reads the identification information stored in the storage unit 132 (step S105). The wireless tag 10b sends the temperature determination result along with the identification information (step S106), and the tag reader device 20 receives the temperature determination result (step S202).

[0175] The tag reader device 20 stores the received temperature determination result and identification information in the storage unit 222 (step S203). Then, the tag reader device 20 sends the temperature determination result and identification information (step S204), and the monitoring terminal device 30a receives the temperature determination result (step S301). The tag reader device 20 stops moving (step S205). The monitoring terminal device 30a stores the received temperature determination result and identification information in the storage unit 32 (step S302). Through the above processing, the monitoring terminal device 30a can acquire the temperature determination result and identification information, and can classify, sort, and edit the data stored in the storage unit 32. By utilizing the data stored in the storage unit 32, the monitored object can be monitored. That is, the monitoring system can monitor for temperature anomalies in each monitored object identified by the acquired identification information.

[0176] (Example of the data obtained)

[0177] Figure 18 This is a diagram illustrating an example of data acquired by the tag reader device 20 from the wireless tag 10b. Figure 18 An example of data sent from the tag reader device 20 to the monitoring terminal device 30a and stored in the storage unit 32 is shown.

[0178] like Figure 18 As shown, the RFID identification information "rfid0001", "rfid0002", etc., are stored in the storage unit 32 along with other data. For example, the identification information "rfid0001" is associated with the acquisition time (i.e., year, month, day, hour, and minute), the bearing identification information (ID) i.e., the serial number (s / n), and the temperature determination result. In this example, the temperature determination result is "H" indicating that it exceeds the specified threshold or "L" indicating that it is below the specified threshold. In this example, Figure 18 The shaded area in the image is "H", indicating that the specified threshold has been exceeded.

[0179] (Fifth Implementation)

[0180] In the monitoring system of the fourth embodiment described above, one tag reader device 20 is used, but multiple tag reader devices may also be used. (Refer to...) Figure 13 The monitoring system of the fifth embodiment will be described. For example... Figure 13As shown, the monitoring system of the fifth embodiment uses two tag reader devices 20a and 20b. Tag reader device 20a moves near three mechanical devices 200a, 200b, and 200c, for example, as indicated by arrow Y3. In this example, the tag reader device at its previous position is marked "20a", and the tag reader device at its current position is marked "20a'". Similarly, tag reader device 20b moves near the three mechanical devices 200a, 200b, and 200c, for example, as indicated by arrow Y4. In this example, the tag reader device at its previous position is marked "20b", and the tag reader device at its current position is marked "20b'".

[0181] The communicable range 120a of the tag reader device 20a before relocation includes all mechanical components 40 included in mechanical device 200a and a portion of mechanical components 40 included in mechanical device 200b. Similarly, the communicable range 120b of the tag reader device 20b before relocation includes all mechanical components 40 included in mechanical device 200a and a portion of mechanical components 40 included in mechanical device 200b. On the other hand, the communicable range 120a' of the tag reader device 20a' at the relocated position includes all mechanical components 40 included in mechanical device 200c and a portion of mechanical components 40 included in mechanical device 200b. Furthermore, the communicable range 120b' of the tag reader device 20b' at the relocated position includes all mechanical components 40 included in mechanical device 200c and a portion of mechanical components 40 included in mechanical device 200b. In this way, multiple tag reader devices 20a and 20b move such that all mechanical components 40 are arranged within a range formed by combining the pre-movement communication range 120a and 120b with the post-movement communication range 120a' and 120b', thereby enabling the tag reader devices 20a and 20b to obtain identification information and temperature determination results from each wireless tag 10b. The identification information and temperature determination results obtained by the multiple tag reader devices 20a and 20b are sent to the monitoring terminal device 30 and stored in the storage unit 32 within the monitoring terminal device 30. That is, the identification information and temperature determination results are stored in the storage unit 32 shared by the multiple tag reader devices 20a and 20b. The movement of the multiple tag reader devices 20a and 20b enables reliable acquisition of identification information and temperature determination results from each wireless tag 10b of all mechanical components 40. In particular, when the antennas of each tag reader device 20a and 20b have different directivity, identification information and temperature determination results can be reliably obtained by moving multiple tag reader devices.

[0182] According to the monitoring system of the fourth or fifth embodiment described above, maintenance personnel can monitor production equipment in factory premises or other production facilities without having to go directly to the vicinity of the machinery. Specifically, it is possible to detect and identify abnormalities associated with temperature changes. For example, temperature monitoring and handling can be performed from a remote control room. In the above embodiments, bearings are used as the monitoring object, but this is not the only limitation; for example, it is possible to monitor shaft elongation caused by heat, motor rated operation, etc. Furthermore, for example, if the bearing and the box containing the bearing are labeled and shipped together, it is also possible to monitor abnormal temperatures from the time of shipment until assembly into the machinery during transport.

[0183] (Sixth Implementation Method)

[0184] Figure 19 This is a diagram illustrating a monitoring system according to a sixth embodiment of this disclosure. Figure 19 In this system, the monitoring system 100c includes a wireless tag 10c, a tag reader device 20a, and a monitoring terminal device 30a. The wireless tag 10c is disposed on the monitored object of the monitoring system 100c. The tag reader device 20a is capable of acquiring data from the wireless tag 10c. In addition, the tag reader device 20a is capable of writing data to the wireless tag 10c. The tag reader device 20a is equivalent to the data acquisition device of this disclosure.

[0185] (Wireless Tag)

[0186] The wireless tag 10c includes an antenna 11, an accelerometer 12a, a control unit 13, a power supply unit 14, and a decision unit 15a. The control unit 13 includes a communication unit 131 and a storage unit 132. The wireless tag 10c is, for example, an RFID tag.

[0187] Antenna 11 is a transceiver antenna. That is, antenna 11 has the function of both a transmitting antenna and a receiving antenna.

[0188] Accelerometer 12a detects acceleration. Specifically, accelerometer 12a detects the acceleration of the monitored object to which the wireless tag 10c is attached. The acceleration detected by accelerometer 12a is sent to decision unit 15a.

[0189] The communication unit 131 is capable of receiving data wirelessly via the antenna 11. The communication unit 131 is also capable of transmitting data wirelessly via the antenna 11.

[0190] The storage unit 132 stores identification information 1320 for identifying the wireless tag 10c itself. Additionally, the storage unit 132 stores the determination result of the determination unit 15a as data. The data stored in the storage unit 132 can be read.

[0191] The power supply unit 14 supplies power to various components within the wireless tag 10c. The power supply unit 14 is, for example, a primary battery. Because power is supplied from the power supply unit 14, the wireless tag 10c is able to detect acceleration by the accelerometer 12a and save the vibration determination results based on the acceleration data to the storage unit 132.

[0192] The determination unit 15a determines whether the detected value of acceleration output by the accelerometer 12a exceeds a predetermined threshold. The determination result of the determination unit 15a is stored in the storage unit 132. For example, if the detected value of acceleration output by the accelerometer 12a exceeds the predetermined threshold, the vibration determination result data of the determination unit 15a is "1", and if the detected value is below the predetermined threshold, the vibration determination result data of the determination unit 15a is "0". The determination result "1" or "0" is stored in the storage unit 132.

[0193] For example, a threshold value for the detected acceleration is set as follows. That is, the acceleration caused by vibration when the mechanical device 200 is initially set, or the acceleration caused by vibration when no abnormality occurs, is measured in advance, and a value slightly exceeding this acceleration value is set as the threshold value.

[0194] When a data readout signal is sent from the tag reader device 20a, the wireless tag 10c reads the data stored in the storage unit 132 and sends it to the tag reader device 20a. At this time, the communication unit 131 of the wireless tag 10c establishes an association between the vibration determination result and the identification information and sends it to the tag reader device 20a.

[0195] (Tag reader device)

[0196] The tag reader device 20a includes an antenna 21, a control unit 22, a power supply unit 23, and a motor 24.

[0197] Antenna 21 is a transceiver antenna. That is, antenna 21 has the function of both a transmitting antenna and a receiving antenna.

[0198] The control unit 22 includes a communication unit 221, a storage unit 222, a reading unit 223, a writing unit 224, and a driving unit 225. The communication unit 221 can wirelessly transmit and receive data with the wireless tag 10c via the antenna 21. Additionally, the communication unit 221 can transmit and receive data with the monitoring terminal device 30a via the network NW. The tag reader device 20a can transmit vibration determination results based on acceleration data from the accelerometer 12a of the wireless tag 10c to the monitoring terminal device 30a.

[0199] Storage unit 222 stores the data acquired by communication unit 221. Storage unit 222 establishes a correlation between the vibration determination results acquired by communication unit 221 and the identification information and stores them. In addition, storage unit 222 stores various data and programs required for the operation of tag reader device 20a.

[0200] The reading unit 223, utilizing the antenna 21 and the communication unit 221, is capable of receiving data transmitted from the wireless tag 10c and reading data stored in the wireless tag 10c. Thus, the tag reader device 20a can acquire data from the wireless tag 10c.

[0201] The reading unit 223 can simultaneously communicate wirelessly with multiple wireless tags 10c, and can simultaneously acquire vibration determination results from multiple wireless tags 10c. At this time, the acquisition is performed while the identification information is associated with the vibration determination results. Therefore, the tag reader device 20a acquires the vibration determination results based on the acceleration data of each accelerometer of the multiple wireless tags 10c in a relatively short time. The tag reader device 20a sends the vibration determination results based on the acceleration data of the multiple accelerometers to the monitoring terminal device 30a.

[0202] The writing unit 224 can transmit data to the wireless tag 10c using the antenna 21 and the communication unit 221. Thus, the tag reader device 20a can write data to the wireless tag 10c. The drive unit 225 controls the motor 24 to move the tag reader device 20a.

[0203] The power supply unit 23 supplies power to various parts within the tag reader device 20a. The power supply unit 23 is, for example, a primary battery.

[0204] (Monitoring terminal device)

[0205] The monitoring terminal device 30a includes a communication unit 31, a storage unit 32, a control unit 33, a power supply unit 34, and an alarm unit 37. The communication unit 31 can send and receive data with the tag reader device 20a via a network NW. The monitoring terminal device 30a can be installed either near the tag reader device 20a or at a distance.

[0206] The storage unit 32 stores data acquired by the tag reader device 20a from the wireless tag 10c. The storage unit 32 is equivalent to the data acquisition and storage unit of this disclosure. The control unit 33 includes, for example, a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), an input interface, and an output interface (not shown). The CPU, ROM, and RAM (not shown) are connected by an internal bus. Programs such as the BIOS are stored in the ROM. The CPU performs various functions by using the RAM as its working area while executing programs stored in the ROM or storage unit 32. The control unit 33 can classify, sort, and edit the data stored in the storage unit 32. The power supply unit 34 supplies power to each part of the monitoring terminal device 30a.

[0207] The alarm unit 37 outputs an alarm when the determination result of the determination unit 15 of the wireless tag 10c indicates that the vibration exceeds a predetermined threshold. That is, the alarm unit 37 outputs an alarm based on the determination result of the determination unit 15. For example, if the determination result exceeds the predetermined threshold, an alarm is output by displaying a picture on a display unit (not shown) or by outputting a buzzer sound from a speaker (not shown). Thus, maintenance personnel can identify vibrations exceeding the threshold.

[0208] Figure 20 It is shown Figure 19 A diagram illustrating the structure of the determination unit 15a in the diagram. Figure 20 The determination unit 15a shown includes a comparator 151 and resistors R1 and R2. The comparator 151 has a positive input terminal (+) and a negative input terminal (-).

[0209] Resistors R1 and R2 are connected in series between the power supply voltage VDD and the ground potential. The junction of resistors R1 and R2 is connected to the negative input terminal of comparator 151. The voltage value resulting from the voltage divider formed by resistors R1 and R2 is input to the negative input terminal of comparator 151. Comparator 151 outputs a voltage value corresponding to the comparison result between the voltage value at the negative input terminal and the voltage value at the positive input terminal. That is, comparator 151 outputs a high-level voltage value (H) when the voltage value at the positive input terminal exceeds the voltage value at the negative input terminal, and outputs a low-level voltage value (L) when the voltage value at the positive input terminal is lower than the voltage value at the negative input terminal.

[0210] As described above, the determination unit 15a targets the acceleration sensor 12a (refer to...). Figure 19The comparator 151 determines whether the detected acceleration value exceeds a threshold value based on the voltage value after resistor voltage division. For example, the high-level voltage value (H) output by the comparator 151 is associated with "1", and the low-level voltage value (L) is associated with "0". Therefore, if the data output from the determination unit 15a is "1", it indicates that the vibration of acceleration detected by the acceleration sensor 12a exceeds a predetermined threshold. (Return to...) Figure 19 The data output from the determination unit 15a is stored in the storage unit 132. That is, the storage unit 132 stores the determination result and identification information of the determination unit 15a.

[0211] (Example of a monitored object)

[0212] Monitoring object and reference in the sixth embodiment Figure 2 and Figure 3 The objects of surveillance mentioned above are the same.

[0213] The tag reader device 20a is not fixed in the mechanical device 200 (see reference). Figure 2 The tag reader device 20a moves near the wireless tag 10c. It moves to a location where it can transmit and receive signals with the wireless tag 10c. That is, the tag reader device 20a acquires data from the wireless tag 10c while circling around. The tag reader device 20a may move, for example, along a track installed on the floor or ceiling of a room where the mechanical device 200 is installed. Alternatively, it may move along a pre-set path on the ground without a track. For example, a program controlling the motor 24 to move automatically along a pre-set path is stored in the storage unit 222. Then, the program is read and executed in the control unit 22. Alternatively, the tag reader device 20a may be pre-mounted on a drone, which moves to a location where it can transmit and receive signals with the wireless tag 10c.

[0214] Additionally, as referenced Figure 15 As explained, multiple mechanical devices 200 can also be monitored. (See reference...) Figure 15 As explained, the tag reader device 20a moves in such a way that all mechanical parts 40 are arranged within the range that combines the communicable range 120 and the communicable range 120', thereby enabling the tag reader device 20a to obtain identification information and vibration determination results from each wireless tag 10c.

[0215] Return to Figure 19 The identification information and vibration determination results obtained from each wireless tag 10c are stored in the storage unit 222 and then sent to the monitoring terminal device 30a via the network NW. The monitoring terminal device 30a stores the identification information and vibration determination results in the storage unit 32. The control unit 33 can classify, sort, and edit the data stored in the storage unit 32.

[0216] The accelerometer 12a of each wireless tag 10c detects acceleration at a predetermined interval, for example. For instance, the accelerometer 12a detects acceleration once a day at a predetermined time. Alternatively, it may detect acceleration at predetermined intervals, for example, every hour, every 30 minutes, every minute, or every 30 seconds.

[0217] Regarding vibrations based on acceleration detected by accelerometer 12a, the determination unit 15 determines whether a predetermined threshold is exceeded. The identification information and vibration determination result are stored in the storage unit 132. As described above, the monitoring system can acquire the vibration determination result for each monitored object identified by the acquired identification information and monitor the generation of vibrations exceeding the threshold.

[0218] (Example of action)

[0219] Operational Examples and References of the Monitoring System 100c in the Sixth Embodiment Figure 17 The monitoring system 100b of the fourth embodiment described herein is the same. See again... Figure 17 An example of the operation of the monitoring system 100c will be explained.

[0220] exist Figure 17 In this process, steps S101 to S106 represent an example of the operation of the wireless tag 10c, steps S200 to S205 represent an example of the operation of the tag reader device 20, and steps S301 to S302 represent an example of the operation of the monitoring terminal device 30a.

[0221] exist Figure 17 In step S101, the wireless tag 10c acquires acceleration data from the accelerometer 12a. Next, the wireless tag 10c determines whether the vibration data based on acceleration exceeds a predetermined threshold (i.e., whether it is greater than the threshold) in the determination unit 15a (step S101a). If the vibration data exceeds the predetermined threshold, the data indicating that the vibration data exceeds the predetermined threshold is stored in the storage unit 132 as a vibration determination result (step S102). If the vibration data does not exceed the predetermined threshold in step S101a, the process returns to step S101 and continues.

[0222] Subsequently, the tag reader device 20 begins to move (step S200). When the tag reader device 20 sends a data readout signal to the wireless tag 10c (step S201), the wireless tag 10c receives the readout signal (step S103). Then, the wireless tag 10c reads the identification information stored in the storage unit 132 (step S105). The wireless tag 10c sends the vibration determination result along with the identification information (step S106), and the tag reader device 20 receives the vibration determination result (step S202).

[0223] The tag reader device 20 stores the received vibration determination result and identification information in the storage unit 222 (step S203). Then, the tag reader device 20 sends the vibration determination result and identification information (step S204), and the monitoring terminal device 30a receives the vibration determination result and identification information (step S301). The tag reader device 20 stops moving (step S205). The monitoring terminal device 30a stores the received vibration determination result and identification information in the storage unit 32 (step S302). Through the above processing, the monitoring terminal device 30a can acquire the vibration determination result and identification information, and can classify, sort, and edit the data stored in the storage unit 32. By utilizing the data stored in the storage unit 32, the monitored object can be monitored. That is, the monitoring system can monitor the vibration of each monitored object identified by the acquired identification information.

[0224] (Example of the data obtained)

[0225] Figure 21 This is a diagram illustrating an example of data acquired by the tag reader device 20 from the wireless tag 10c. Figure 21 An example of data sent from the tag reader device 20 to the monitoring terminal device 30a and stored in the storage unit 32 is shown.

[0226] like Figure 21 As shown, the RFID identification information "rfid0001", "rfid0002", etc., are stored in the storage unit 32 along with other data. For example, the identification information "rfid0001" is associated with the acquisition time (i.e., year, month, day, hour, and minute), the bearing identification information (ID) i.e., the serial number (s / n), and the vibration determination result. In this example, the vibration determination result is "H" indicating that the vibration exceeds the specified threshold or "L" indicating that the vibration is below the specified threshold. In this example, Figure 21 The shaded area in the image is "H", indicating that the specified threshold has been exceeded.

[0227] In the monitoring system of the fifth embodiment described above, one tag reader device 20 is used, but multiple tag reader devices may also be used. (Refer to...) Figure 13 The monitoring system of the sixth embodiment will be described. For example... Figure 13 As shown, the monitoring system of the sixth embodiment uses two tag reader devices 20a and 20b. Tag reader device 20a moves near three mechanical devices 200a, 200b, and 200c, for example, as indicated by arrow Y3. In this example, the tag reader device at its previous position is marked "20a", and the tag reader device at its current position is marked "20a'". Similarly, tag reader device 20b moves near the three mechanical devices 200a, 200b, and 200c, for example, as indicated by arrow Y4. In this example, the tag reader device at its previous position is marked "20b", and the tag reader device at its current position is marked "20b'".

[0228] The communicable range 120a of the tag reader device 20a before relocation includes all mechanical components 40 included in mechanical device 200a and a portion of mechanical components 40 included in mechanical device 200b. Similarly, the communicable range 120b of the tag reader device 20b before relocation includes all mechanical components 40 included in mechanical device 200a and a portion of mechanical components 40 included in mechanical device 200b. On the other hand, the communicable range 120a' of the tag reader device 20a' at the relocated position includes all mechanical components 40 included in mechanical device 200c and a portion of mechanical components 40 included in mechanical device 200b. Furthermore, the communicable range 120b' of the tag reader device 20b' at the relocated position includes all mechanical components 40 included in mechanical device 200c and a portion of mechanical components 40 included in mechanical device 200b. In this way, multiple tag reader devices 20a and 20b move such that all mechanical components 40 are arranged within a range formed by combining the pre-movement communication range 120a and 120b with the post-movement communication range 120a' and 120b', thereby enabling the tag reader devices 20a and 20b to obtain identification information and vibration determination results from each wireless tag 10. The identification information and vibration determination results obtained by the multiple tag reader devices 20a and 20b are sent to the monitoring terminal device 30 and stored in the storage unit 32 within the monitoring terminal device 30. That is, the identification information and vibration determination results are stored in the storage unit 32 shared by the multiple tag reader devices 20a and 20b. The movement of the multiple tag reader devices 20a and 20b enables reliable acquisition of identification information and vibration determination results from each wireless tag 10 of all mechanical components 40. In particular, when the antennas of each tag reader device 20a and 20b have different directivity, identification information and vibration determination results can be reliably obtained by moving multiple tag reader devices.

[0229] According to the monitoring system of the fifth or sixth embodiment described above, maintenance personnel can monitor production equipment in factory premises or other production facilities without having to go directly to the vicinity of the machinery. Specifically, it is possible to detect abnormalities accompanied by vibration changes and to identify the bearing. For example, vibration monitoring and handling can be performed from a remote control room. Furthermore, for example, if the bearing and its packaging box are labeled and shipped together, it is also possible to monitor abnormal vibrations from the time of shipment until assembly into the machinery during transport.

[0230] (Seventh Implementation)

[0231] In the first to sixth embodiments described above, a monitoring system using wireless tags was explained. Hereinafter, a security management system using wireless tags for security management will be described. Figure 22 This is a diagram illustrating a security management system according to the seventh embodiment of this disclosure. Figure 22 The security management system 100d includes a wireless tag 10, a tag reader device 20a, and a security management device 30b. The wireless tag 10 is installed on a security management object within the security management system 100d. The tag reader device 20a can acquire data from the wireless tag 10. Additionally, the tag reader device 20a can write data to the wireless tag 10. The tag reader device 20a is equivalent to the data acquisition device of this disclosure.

[0232] (Wireless Tag)

[0233] The wireless tag 10 includes an antenna 11, a temperature sensor 12, a control unit 13, and a power supply unit 14. The control unit 13 includes a communication unit 131 and a storage unit 132. The wireless tag 10 is, for example, an RFID tag.

[0234] Antenna 11 is a transceiver antenna. That is, antenna 11 has the function of both a transmitting antenna and a receiving antenna.

[0235] Temperature sensor 12 detects temperature. Specifically, temperature sensor 12 detects the temperature of the security management object to which wireless tag 10 is attached. The temperature detected by temperature sensor 12 is stored as temperature data in storage unit 132 of control unit 13. That is, temperature sensor 12 outputs temperature data corresponding to the temperature.

[0236] The communication unit 131 is capable of receiving data wirelessly via the antenna 11. The communication unit 131 is also capable of transmitting data wirelessly via the antenna 11.

[0237] The storage unit 132 stores identification information 1320 for identifying the wireless tag 10 itself. Additionally, the storage unit 132 stores the temperature detected by the temperature sensor 12 as temperature data. The data stored in the storage unit 132 can be read.

[0238] The power supply unit 14 supplies power to various components within the wireless tag 10. The power supply unit 14 is, for example, a primary battery. Because power is supplied from the power supply unit 14, the wireless tag 10 is able to detect temperature by the temperature sensor 12 and save the temperature data to the storage unit 132.

[0239] When a data readout signal is sent from the tag reader device 20a, the wireless tag 10 reads the data stored in the storage unit 132 and sends it to the tag reader device 20a. At this time, the communication unit 131 of the wireless tag 10 associates the temperature data with the identification information and sends it to the tag reader device 20a.

[0240] (Tag reader device)

[0241] The tag reader device 20a includes an antenna 21, a control unit 22, and a power supply unit 23.

[0242] Antenna 21 is a transceiver antenna. That is, antenna 21 has the function of both a transmitting antenna and a receiving antenna.

[0243] The control unit 22 includes a communication unit 221, a storage unit 222, a reading unit 223, and a writing unit 224. The communication unit 221 can wirelessly transmit and receive data with the wireless tag 10 via the antenna 21. Additionally, the communication unit 221 can transmit and receive data with the security management device 30b via the network NW. The tag reader device 20a can transmit temperature data from the temperature sensor 12 of the wireless tag 10 to the security management device 30b.

[0244] Storage unit 222 stores the data acquired by communication unit 221. Storage unit 222 associates the temperature data acquired by communication unit 221 with identification information and stores it. In addition, storage unit 222 stores various data and programs required for the operation of tag reader device 20a.

[0245] The reading unit 223, utilizing the antenna 21 and the communication unit 221, is capable of receiving data transmitted from the wireless tag 10 and reading data stored in the wireless tag 10. Thus, the tag reader device 20a can acquire data from the wireless tag 10.

[0246] The reading unit 223 can simultaneously communicate wirelessly with multiple wireless tags 10 and acquire temperature data from multiple wireless tags 10 simultaneously. At this time, the acquisition is performed while the identification information is associated with the temperature data. Therefore, the tag reader device 20a acquires the temperature data from each temperature sensor of the multiple wireless tags 10 in a relatively short time. The tag reader device 20a then sends the temperature data from the multiple temperature sensors to the security management device 30b.

[0247] The writing unit 224 can transmit data to the wireless tag 10 using the antenna 21 and the communication unit 221. Thus, the tag reader device 20a can write data to the wireless tag 10.

[0248] The power supply unit 23 supplies power to various parts within the tag reader device 20a. The power supply unit 23 is, for example, a primary battery.

[0249] (Security management device)

[0250] The security management device 30b includes a communication unit 31, a storage unit 32, a control unit 33, a power supply unit 34, a display unit 35, and an input unit 36. The communication unit 31 can send and receive data with the tag reader device 20a via a network NW. The security management device 30b can be installed near the tag reader device 20a or at a remote location.

[0251] The storage unit 32 stores data acquired by the tag reader device 20a from the wireless tag 10. The storage unit 32 is equivalent to the data acquisition and storage unit of this disclosure. The control unit 33 includes, for example, a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), an input interface, and an output interface (not shown). The CPU, ROM, and RAM (not shown) are connected by an internal bus. Programs such as the BIOS are stored in the ROM. The CPU performs various functions by using the RAM as its working area while executing programs stored in the ROM or storage unit 32. The control unit 33 can classify, sort, and edit the data stored in the storage unit 32. The control unit 33 determines whether the temperature data stored in the storage unit 32 is above a predetermined threshold. As described later, the control unit 33 has the functions of the determination unit of this disclosure. The power supply unit 34 supplies power to each part of the security management device 30b.

[0252] Display unit 35 is a part that displays various data to personnel performing security management. For example, display unit 35 can display data read from storage unit 32 by control unit 33. Input unit 36 ​​is a part for personnel performing security management to input data, such as a keyboard or mouse.

[0253] (Example of an object under security management)

[0254] Figure 23 This is a diagram showing an example of a security management object in a security management system. Figure 23 This diagram illustrates a situation where mechanical device 200 is subject to maintenance management. Figure 23 Mechanical component 40 and reference Figure 3 The mechanical parts described are the same as 40.

[0255] The tag reader device 20a moves near the mechanical device 200. The tag reader device 20a moves to a location where it can transmit and receive signals with the wireless tag 10. That is, the tag reader device 20a acquires data from the wireless tag 10 while circling around. The tag reader device 20a moves, for example, along a track installed on the floor or ceiling of the room where the mechanical device 200 is located. Alternatively, there may be no track, and the tag reader device 20a moves along a pre-set path on the floor. For example, a motor may be installed in the tag reader device 20a, and a program to control the motor to move automatically along the pre-set path may be stored in the storage unit 222. Furthermore, this program can be read and executed in the control unit 22.

[0256] Return to Figure 22 The identification information and temperature data obtained from each wireless tag 10 are stored in the storage unit 222 and then sent to the security management device 30b via the network NW. The security management device 30b stores the identification information and temperature data in the storage unit 32. The control unit 33 can classify, sort, and edit the data stored in the storage unit 32.

[0257] The temperature sensors 12 of each wireless tag 10 detect the temperature at a predetermined interval, for example. For instance, the temperature sensors 12 may detect the temperature once a day at a predetermined time. Alternatively, they may detect the temperature at predetermined intervals, such as every hour, every 30 minutes, every minute, or every 30 seconds.

[0258] The identification information and temperature data can be sent to the tag reader device 20a either each time the wireless tag 10 detects the temperature, or they can be sent to the tag reader device 20a in a centralized manner when the amount of data stored in the storage unit 132 of the wireless tag 10 reaches a predetermined amount. In the former case, security management processing can be performed more quickly. In the latter case, centralized transmission further reduces the power consumption of the power supply unit 14. As described above, the security management system can acquire the temperature data of each security management object identified by the acquired identification information and monitor for anomalies in the temperature data.

[0259] (Example of action)

[0260] Figure 24 This is a flowchart illustrating an example of the operation of the security management system 100d according to the seventh embodiment. Figure 24 The operation of the wireless tag 10, tag reader device 20a, and security management device 30b of the security management system 100d is shown.

[0261] exist Figure 24 In this process, steps S101 to S106 represent an example of the operation of the wireless tag 10, steps S201 to S204 represent an example of the operation of the tag reader device 20a, and steps S301 to S302 represent an example of the operation of the security management device 30b.

[0262] exist Figure 24 In the process, the wireless tag 10 obtains temperature data from the temperature sensor 12 in advance (step S101) and stores it in the storage unit 132 (step S102).

[0263] Subsequently, when the tag reader device 20a sends a readout signal to the wireless tag 10 (step S201), the wireless tag 10 receives the readout signal (step S103). Then, the wireless tag 10 acquires temperature data from the temperature sensor 12 (step S104) and reads the identification information stored in the storage unit 132 (step S105). The wireless tag 10 transmits the temperature data along with the identification information (step S106), and the tag reader device 20a receives the temperature data (step S202).

[0264] Tag reader device 20a stores the received temperature data and identification information in storage unit 222 (step S203). Then, tag reader device 20a sends the temperature data and identification information (step S204), and security management device 30b receives the temperature data and identification information (step S301). Security management device 30b stores the received temperature data and identification information in storage unit 32 (step S302). Through the above processing, security management device 30b can acquire temperature data and identification information, and can classify, sort, and edit the data stored in storage unit 32. Security management device 30b can monitor security management objects using the data stored in storage unit 32.

[0265] Figure 25 It is shown Figure 22 The flowchart shows a first example of the processing in the control unit 33 of the security management device 30b. The control unit 33 performs the following processing by executing the program stored in the storage unit 32.

[0266] exist Figure 25In step S311, the control unit 33 reads the temperature data stored in the storage unit 32. The control unit 33 displays the read temperature data on the display unit 35 (step S312). The control unit 33 determines whether each temperature data displayed on the display unit 35 is above a predetermined first threshold (step S313). If the determination result in step S313 is above the first threshold ("yes" in step S313), the display mode of that temperature data is changed (step S314). That is, the specific data above the first threshold is displayed in a different way than other temperature data. Then, other temperature data are processed (step S315), and the above process is repeated.

[0267] On the other hand, if the determination result in step S313 is not above the first threshold ("No" in step S313), the display method of the temperature data is not changed (step S316). Then, other temperature data are treated as the objects of processing (step S315), and the above processing is repeated.

[0268] As described above, by changing the display method of temperature data above the first threshold, maintenance personnel can easily identify the management object corresponding to abnormal temperature data and quickly perform maintenance and other maintenance management tasks. Therefore, the maintenance management system according to the seventh embodiment can monitor for abnormalities in the temperature data of each maintenance management object identified by the acquired identification information.

[0269] (Example of temperature data)

[0270] Figure 26 This is a diagram illustrating an example of data acquired by the tag reader device 20 from the wireless tag 10. Figure 26 This shows temperature data sent from the tag reader device 20 to the security management device 30b and stored in the storage unit 32. For example... Figure 26 As shown, the temperature data is displayed as a table on the screen of display unit 35.

[0271] like Figure 26 As shown, the RFID identification information "rfid0001", "rfid0002", etc., are stored in the storage unit 32 in association with other data. For example, the identification information "rfid0001" is associated with the acquisition time (i.e., year, month, day, hour, and minute), the bearing identification information (ID) i.e., the serial number (s / n), and the measured temperature i.e., the temperature data. In this example, it is also associated with the year, month, and day and content of the last maintenance (e.g., grease replenishment, adding to the checklist), the year, month, and day and content of the next recommended maintenance, the year, month, and day of the start date of operation, the year, month, and day and content of past maintenance history, and the device name, unit name, and measured temperature as device information.

[0272] Figure 26The data shown includes RFID identification information, acquisition time, bearing serial number, and various temperature measurement data. Figure 26 The range H1 in the data is obtained from the wireless tag 10. In contrast, the data includes the date and content of the last maintenance, the recommended date and content of the next maintenance, the date of operation start, the date and content of past maintenance history, the device name, unit name, and various temperature measurement data (as device information). Figure 26 The range H2) is the data used for security management.

[0273] about Figure 26 The measured temperature 351 shown in the data is the temperature data, as referenced. Figure 25 As explained, the display method is changed based on the comparison result with the first threshold. For example, for measured temperatures above the first threshold, emphasis is placed by changing the display color, increasing the display brightness, or flashing the display. By changing the display method, the attention of maintenance personnel can be drawn. Furthermore, in Figure 26 In this context, differences in displayed colors are represented through techniques such as shadows.

[0274] exist Figure 26 In the example shown, the display color was changed for measured temperatures above 70°C. Furthermore, in... Figure 26 In the example shown, temperatures above 80°C (higher than 70°C) can also be displayed in different colors. This is possible by preparing several first threshold values ​​and... Figure 25 By comparing and judging in step S313, multiple warning stages can be achieved. For example, a yellow warning is displayed when the temperature is above 70°C, and a red warning is displayed when the temperature is above 80°C, thus making the temperature level intuitively clear.

[0275] In addition, the unit name is an identification reference. Figure 23 Information about the shaft components. For example, "shaft 1-1", "shaft 1-2", "shaft 1-3", "shaft 1-4", "shaft 2-1", "shaft 2-2", "shaft 3-1", "shaft 3-2", "shaft 3-3", "shaft 3-4".

[0276] Temperature measurement results for each shaft component are as follows (see reference). Figure 7 As explained, this can be displayed using a bar chart. That is, as shown in the reference... Figure 7 As already explained, the security management device 30b is capable of... Figure 26 The data shown can be edited and displayed as a bar chart in screens not shown. Figure 7 The bar chart shown displays temperature data horizontally. Because the bar chart is displayed horizontally according to the configuration of the objects being maintained, maintenance personnel can visually identify the configuration of these objects. Figure 7 In the bar chart shown, the display colors for "Axis 1-1" and "Axis 3-1" above 70°C and "Axis 2-1" above 80°C have been changed.

[0277] In addition, the temperature measurement results of each shaft component can be obtained, for example, by referring to Figure 8 It displays as already explained. Refer again. Figure 8 Please provide an explanation. Figure 8 This is a diagram showing an example of temperature measurement results for shaft 2-1. Figure 7 In the displayed state, if the personnel performing security management perform the prescribed operation, the control unit 33 will switch to... Figure 8 The display status. For example, when the mouse cursor is moved to the area of ​​the bar chart of axis 2-1 and clicked, it switches to the detailed content of the temperature data of axis 2-1. Figure 8 The display status.

[0278] Figure 8 This shows the average temperature data for a certain period (e.g., one day) related to axis 2-1. Figure 8 In the example shown, temperature measurements are not taken on non-working days such as May 1st; therefore, temperature data is unavailable for non-working days. (See reference...) Figure 8 It is understandable that the temperature on axis 2-1 increased on May 8th. Therefore, maintenance personnel can quickly perform repairs, maintenance, and other maintenance tasks.

[0279] (Eighth Implementation Method)

[0280] In the seventh embodiment described above, a determination is made by comparing each temperature data point with a first threshold. In the eighth embodiment described below, the determination is made based on the temperature difference between the temperature data of wireless tags at adjacent locations. The other structures and processing are the same as in the seventh embodiment.

[0281] Figure 27 It is shown Figure 22 The flowchart shows a second example of the processing in the control unit 33 of the security management device 30b. The control unit 33 performs the following processing by executing the program stored in the storage unit 32.

[0282] exist Figure 27 In step S311, the control unit 33 reads the temperature data stored in the storage unit 32. The control unit 33 displays the read temperature data on the display unit 35 (step S312). The control unit 33 calculates the difference between the temperature data displayed on the display unit 35 and the temperature data of the wireless tag at the adjacent location (step S321).

[0283] The control unit 33 determines whether the difference calculated in step S321 is above a predetermined second threshold (step S322). If the determination result in step S322 is above the second threshold ("yes" in step S322), the display method of the higher temperature data among the calculated temperature difference data is changed (step S323). That is, the special data above the second threshold is displayed in a way different from the other temperature data. Then, the above processing is repeated for the other temperature data (step S315).

[0284] On the other hand, if the determination result in step S322 is not above the second threshold ("No" in step S322), the display method of the temperature data is not changed (step S316). Then, other temperature data are treated as the objects of processing (step S315), and the above processing is repeated.

[0285] As described above, by changing the display method of temperature data above the second threshold, personnel responsible for maintenance can easily identify the management object corresponding to abnormal temperature data based on the difference in temperature data with adjacent locations, and can quickly perform maintenance and repair work. Therefore, the maintenance management system of the second embodiment can monitor for anomalies in the temperature data of each maintenance management object identified by the acquired identification information.

[0286] (Ninth Implementation)

[0287] Figure 28 This is a diagram illustrating a security management system according to the ninth embodiment of this disclosure. Figure 28 In the security management system 100e, the control unit 33a of the security management device 30c includes a calculation unit 331. The calculation unit 331 calculates the average value of the temperature data. In the seventh embodiment described above, a determination is made by comparing each temperature data point with a first threshold. In the security management system 100e of the ninth embodiment, the determination is based on the difference between the temperature data and the average value. Other structures and processing methods are the same as in the seventh embodiment.

[0288] Figure 29 It is shown Figure 28 The flowchart shows a third example of the processing in the control unit 33 of the security management device 30c. The control unit 33 performs the following processing by executing the program stored in the storage unit 32.

[0289] exist Figure 29In step S311, the control unit 33 reads the temperature data stored in the storage unit 32. The control unit 33 displays the read temperature data on the display unit 35 (step S312). The control unit 33 calculates the average value of each temperature data displayed on the display unit 35 (step S331). The process of calculating the average value in step S331 is equivalent to the process of the calculation unit of this disclosure.

[0290] The control unit 33 determines whether the difference between the temperature data and the average value calculated in step S331 is greater than or equal to a predetermined third threshold (step S332). If the determination result in step S332 is that the difference between the temperature data and the average value is greater than or equal to the third threshold ("yes" in step S332), the display method of the temperature data is changed (step S314). That is, the special data above the third threshold is displayed in a way different from other temperature data. Then, other temperature data are processed (step S315), and the above processing is repeated.

[0291] On the other hand, if the determination result in step S322 is that the difference from the average value is not above the third threshold ("No" in step S332), the display method of the temperature data is not changed (step S316). Then, other temperature data are treated as the objects of processing (step S315), and the above processing is repeated.

[0292] As described above, regarding the difference from the average temperature data, by changing the display method of temperature data above the third threshold, temperature data deviating from the average can be easily extracted. Therefore, maintenance personnel can easily identify the management object corresponding to abnormal temperature data and quickly perform maintenance, repairs, and other maintenance tasks. Thus, the maintenance management system of the third embodiment can monitor for anomalies in the temperature data of each maintenance management object identified through the acquired identification information.

[0293] (Modified Example)

[0294] In the embodiments described above, temperature data is displayed using bar charts, but it can also be displayed in other formats. For example, temperature data can also be displayed using pie charts or line charts.

[0295] Explanation of reference numerals in the attached figures

[0296] Axes 1-1 to 1-4, 2-1, 2-2, 3-1 to 3-4

[0297] 10, 10a, 10b, 10c Wireless Tags

[0298] 11, 21 antennas

[0299] 12 Temperature Sensors

[0300] 12a Accelerometer

[0301] 13, 22, 33, 33a Control Department

[0302] 14, 23, 34 Power Supply Section

[0303] 15, 15a Judgment Section

[0304] Tag reader devices 20, 20', 20a, 20a', 20b, 20b'

[0305] 24 motors

[0306] 30, 30a Monitoring terminal devices

[0307] 30b, 30c Security Management Device

[0308] 31, 131, 221 Ministry of Communications

[0309] Storage units 32, 132, and 222

[0310] 35 Display Section

[0311] 36 Input Section

[0312] 37 Alarm Department

[0313] 40 Mechanical parts

[0314] 41 Shaft members

[0315] 42 bearing

[0316] 43 Through hole

[0317] Holes 44a and 44b

[0318] 50 roll components

[0319] 60-roller assembly

[0320] 70 Support platform

[0321] 100, 100a, 100b, 100c monitoring systems

[0322] 100d and 100e Security Management Systems

[0323] 151 comparator

[0324] Mechanical devices 200, 200a, 200b, 200c

[0325] 223 Reading Department

[0326] 224 Writing Department

[0327] 225 Drive Unit

[0328] 331 Computing Department

[0329] 351 Temperature Measurement

[0330] 1320 Identification Information

[0331] resistors R1 and R2

Claims

1. A monitoring system including a wireless tag provided to a monitoring object and a data acquisition device that acquires data from the wireless tag, the data acquisition device being movable, wherein the wireless tag has: a storage section that stores identification information; and a communication section that transmits the identification information, the data acquisition device moves in the vicinity of the wireless tag, and the monitoring system stores the identification information acquired from the wireless tag by the data acquisition device when the data acquisition device moves in the vicinity of the wireless tag.

2. The monitoring system according to claim 1, wherein the wireless tag further has a temperature sensor that detects a temperature of the monitoring object and outputs temperature data corresponding to the temperature, the communication section transmits the identification information and the temperature data output by the temperature sensor, and the monitoring system monitors the monitoring object based on the temperature data and the identification information acquired from the wireless tag by the data acquisition device when the data acquisition device moves in the vicinity of the wireless tag.

3. The monitoring system according to claim 2, wherein a plurality of the data acquisition devices are included, the wireless tag is provided to each of a plurality of the monitoring objects, and the identification information acquired from the wireless tag by a plurality of the data acquisition devices when the plurality of the data acquisition devices move in the vicinity of the wireless tag is stored.

4. The monitoring system according to claim 2 or 3, wherein the communication section transmits the temperature data in association with the identification information.

5. The monitoring system according to any one of claims 1 to 3, wherein the wireless tag is provided to a bearing, the monitoring system further includes a monitoring terminal device for monitoring the bearing, the monitoring terminal device has an acquired data storage section that stores data acquired by the data acquisition device, and monitors the bearing based on the data stored in the acquired data storage section.

6. The monitoring system according to claim 1, wherein the wireless tag further includes: a temperature sensor that detects a temperature of the monitoring object; and a determination section that determines whether the temperature detected by the temperature sensor exceeds a prescribed threshold, the storage section stores the identification information and a determination result of the determination section indicating that the temperature detected by the temperature sensor exceeds the prescribed threshold, the communication section transmits the determination result and the identification information, and the monitoring system monitors the monitoring object based on the determination result and the identification information acquired from the wireless tag by the data acquisition device when the data acquisition device moves in the vicinity of the wireless tag.

7. The monitoring system according to claim 6, wherein a plurality of the data acquisition devices are included, the wireless tag is provided to each of a plurality of the monitoring objects, and the identification information acquired from the wireless tag by a plurality of the data acquisition devices when the plurality of the data acquisition devices move in the vicinity of the wireless tag is stored.

8. The monitoring system according to claim 6 or 7, wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The communication section transmits the determination result in association with the identification information.

9. The monitoring system according to claim 6 or 7, wherein The wireless tag is provided to a bearing, The monitoring system further includes a monitoring terminal device for monitoring the bearing, The monitoring terminal device has an acquired data storage section that stores data acquired by the data acquisition device, and monitors the bearing based on the data stored in the acquired data storage section.

10. The monitoring system according to claim 9, wherein The monitoring terminal device further includes an alarm section that outputs an alarm based on the determination result.

11. The monitoring system according to claim 1, wherein The wireless tag further includes: an acceleration sensor that detects acceleration of the monitoring target; and a determination section that determines whether vibration based on the acceleration detected by the acceleration sensor exceeds a prescribed threshold value, The storage section stores identification information and a determination result of the determination section indicating that vibration based on the acceleration detected by the acceleration sensor exceeds the prescribed threshold value, The communication section transmits the determination result in association with the identification information, The monitoring system monitors the monitoring target based on the determination result and the identification information acquired from the wireless tag by the data acquisition device when the data acquisition device moves in the vicinity of the wireless tag.

12. The monitoring system according to claim 11, wherein a plurality of the data acquisition devices are included, The wireless tag is provided to each of a plurality of the monitoring targets, The storage section stores the identification information acquired from the wireless tag by a plurality of the data acquisition devices when a plurality of the data acquisition devices move in the vicinity of the wireless tag.

13. The monitoring system according to claim 11 or 12, wherein The communication section transmits the determination result in association with the identification information.

14. The monitoring system according to claim 11 or 12, wherein The wireless tag is provided to a bearing, The monitoring system further includes a monitoring terminal device for monitoring the bearing, The monitoring terminal device has an acquired data storage section that stores data acquired by the data acquisition device, and monitors the bearing based on the data stored in the acquired data storage section.

15. The monitoring system according to claim 14, wherein The monitoring terminal device further includes an alarm section that outputs an alarm based on the determination result.

16. A security management system including: a plurality of wireless tags that are respectively provided in the vicinity of each of a plurality of security management targets, and have a temperature sensor that acquires a temperature of the security management target; a data acquisition device that acquires a plurality of temperature data from the plurality of wireless tags; a storage section that stores the plurality of temperature data acquired by the data acquisition device; a determination section that determines whether the temperature data stored in the storage section is equal to or greater than a prescribed threshold value; and a display section that displays the plurality of temperature data read out from the storage section, ​ The display section displays the temperature data that is equal to or higher than the predetermined threshold value among the plurality of temperature data in a different manner from the other temperature data based on the determination result of the determination section.

17. The security management system according to claim 16, wherein The display section displays the temperature data in a different manner from the other temperature data based on the determination result of the determination section in a case where the value of the temperature data is equal to or higher than the first threshold value.

18. The security management system according to claim 16, wherein The display section displays the temperature data in a different manner from the other temperature data based on the determination result of the determination section in a case where the difference between the temperature data of the security management object of the adjacent position is equal to or higher than the second threshold value, for the temperature data of the high value.

19. The security management system according to claim 16, wherein The display section displays the temperature data in a different manner from the other temperature data based on the determination result of the determination section in a case where the difference between the average value and the temperature data is equal to or higher than the third threshold value.

20. The security management system according to any one of claims 16 to 19, wherein The display section displays the plurality of temperature data by a column chart, The display section displays the temperature data displayed in a different manner from the other temperature data among the temperature data displayed by the column chart in a color different from the display color of the other temperature data. ​

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