JP2015175645A - Device, method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow easy finding of an unsuitable thermal management in a commodity distribution process.SOLUTION: The device to be attached to an object includes: a detection unit for detecting a motion of the object whose shape changes in response to variation in temperature; a determination unit for determining whether the magnitude of the motion satisfies a predetermined condition; and a storage unit. When the magnitude of the motion satisfies the predetermined condition, the storage unit stores the date when the predetermined condition is satisfied.

Description

  The present invention relates to an apparatus, a method, and a program.

  In a logistics system, a wireless tag such as RFID (Radio-frequency Identification) is attached to a container, pallet or cardboard box for transporting goods, and the contents and state of the goods being transported are managed electronically. How to do is known.

  For example, Patent Documents 1 and 2 disclose a wireless tag or an IC card that is attached to a package handled in the distribution process, detects an action on the package in the distribution process by various sensors, and holds the record. Yes. Patent Document 3 discloses an article management system using such a wireless tag. Further, Patent Document 4 discloses a system that attaches a sensor that detects the temperature of an article to be conveyed and transmits the temperature to a server.

  In addition, a technique is known that includes a detection device such as electronic paper along with a wireless tag, and changes display contents in accordance with reading and writing. For example, Patent Document 5 discloses a wireless tag that allows an operator to easily check the presence or absence of reading and writing by causing electronic paper to display a predetermined display according to reading and writing.

  In the physical distribution process, depending on the properties of the articles to be conveyed, it is necessary to strictly control the temperature inside the conveyance container. For example, when it is necessary to keep the temperature of an article below a certain temperature, the carrier needs to handle the entire transport container that stores the article in an environment that can be kept cold.

  However, in the existing method, even when the temperature of the transport container is not kept constant during the transport process by the transporter, it is difficult to track this. In particular, there is a problem that it is difficult for the recipient of the article to notice that the temperature control of the article is not appropriate in the process when the temperature is kept constant at the time of receiving the article. .

  The present invention has been proposed in view of the above-described problems, and an object thereof is to make it possible to easily find out that inappropriate temperature management has been performed in a physical distribution process.

In order to solve the above problems, an apparatus according to an embodiment of the present invention
A device attached to an object,
A detector that detects the movement of an object whose shape changes in response to a change in temperature;
A determination unit for determining whether the magnitude of the movement satisfies a predetermined condition;
A storage unit for storing a date and time when the predetermined condition is satisfied when the magnitude of the movement satisfies the predetermined condition;
Have

  According to the present invention, it is possible to easily find out that inappropriate temperature management has been performed in the physical distribution process.

1 is a schematic diagram of a detection apparatus according to an embodiment of the present invention. 1 is a schematic diagram of a detection apparatus according to an embodiment of the present invention. The figure showing the housing | casing of the detection apparatus which concerns on one Embodiment of this invention. The figure showing the hardware structural example of the detection apparatus which concerns on one Embodiment of this invention. The functional block diagram of the detection apparatus which concerns on one Embodiment of this invention. The figure showing the example of the table which stores article | item data. The figure showing acceleration data. The figure showing the example of a display screen. The figure showing the example of a display screen. The sequence diagram showing the flow of a process of the detection apparatus which concerns on one Embodiment of this invention. The sequence diagram showing the flow of a process of the detection apparatus which concerns on one Embodiment of this invention. 1 is a schematic diagram of a detection apparatus according to an embodiment of the present invention. The figure showing the housing | casing of the detection apparatus which concerns on one Embodiment of this invention. The figure showing the hardware structural example of the detection apparatus which concerns on one Embodiment of this invention. The functional block diagram of the detection apparatus which concerns on one Embodiment of this invention. The sequence diagram showing the flow of a process of the detection apparatus which concerns on one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<< 1. Overview >>
FIG. 1 is a schematic view of a detection apparatus according to an embodiment of the present invention. In FIG. 1, a detection device 1 according to an embodiment of the present invention is attached to a cooling agent 5 of an article 6 stored in a transport container 3 used in a physical distribution process. FIG. 1 shows a state in which the transport container 3 storing the detection device 1, the refrigerant 5 and the article 6 is transported by a conveyor. Thereafter, the transport container 3 is transported to a predetermined transport destination by land, sea, and air transportation means.

  The article 6 is, for example, an article that needs to be stored at a temperature equal to or lower than a certain temperature, and the cryogen 5 is attached to keep the temperature inside the transport container 3 below a certain temperature. The cooling agent 5 is a chemical | medical agent containing water, resin, etc., for example. The cold-reserving agent 5 can be kept at a constant temperature or lower by being packaged in the transport container 3 in a frozen state at a low temperature. The temperature of the frozen cryogen 5 increases as the temperature in the transport container 3 increases, and melts into a liquid at a constant temperature (melting point). The temperature at which the melting point is reached is determined by the catalyst added to the cooling agent 5.

  FIG. 2 is a cross-sectional view of the inside of the transport container 3 shown in FIG. The detection device 1 is attached to a recess provided in the cold insulation agent 5 having the above-described characteristics, and can detect the state of the cold insulation agent 5 (the degree of melting) by detecting the movement of the cold insulation agent 5. For example, in one embodiment, the detection device 1 includes an acceleration sensor for detecting vibrations transmitted to itself through the cold insulation agent 5 during conveyance. Then, when the magnitude of vibration satisfies a certain condition, the detection device 1 determines that the cryogen 5 has risen to a certain temperature (melted at a certain rate), and can record and display the date and time. it can.

  For example, while the transport container 3 is mounted and transported on a traveling automobile or conveyor, the detection device 1 detects a certain vibration (change in acceleration). At this time, the detection apparatus 1 determines the degree of melting of the cold insulation agent 5, that is, the temperature of the cold insulation agent 5 by determining the degree of change in acceleration. When the detection device 1 determines that the melting of the cooling agent 5 has progressed to a certain degree, the detection device 1 records the date and time and displays a message indicating that the temperature has been illegally increased.

  The recipient of the article 6 confirms that the temperature management of the article 6 has been inappropriately performed in the physical distribution process by checking the message displayed on the detection device 1 after unpacking the transport container 3. be able to.

  Moreover, the detection apparatus 1 has a radio tag such as an RFID (Radio Frequency Identification) tag, and can communicate with the RFID writer 7 and the RFID reader 9 as shown in FIG. For example, the detection device 1 can transmit the date and time when the temperature has risen to the RFID reader 9 according to the reading process from the RFID reader 9 (or the wireless terminal) used by the worker in charge of conveyance. Thereby, the carrier can detect that the temperature management is inappropriate in the process of conveyance.

  FIG. 3 shows a housing of the detection apparatus 1 according to an embodiment of the present invention. The detection device 1 is for charging a display 11 such as electronic paper, a temperature sensor 12 for measuring the current temperature in the transport container 3, an LED 13 for notifying an alarm, and a built-in battery (not shown). The solar panel 14.

≪2. First embodiment >>
First, a first embodiment of the present invention will be described with reference to FIGS.

≪2.1 Hardware configuration example≫
FIG. 4 illustrates a hardware configuration example of the detection apparatus 1 according to the present embodiment. The detection device 1 includes a display 11, a temperature sensor 12, an LED 13, a solar panel 14, an antenna 16, a control board 21, a flash memory 22, an RFID tag 23, a battery 24, and an acceleration sensor 25. Have.

  The display 11 is, for example, electronic paper. The display 11 operates with low power, does not deteriorate even when receiving sunlight, and has high visibility regardless of whether it is indoors or outdoors. The temperature sensor 12 measures the temperature inside the transport container 3. The LED 13 is a light-emitting component that notifies an alarm to the recipient of the article 6. The solar panel 14 converts external light into electric power and generates a part of electric power for driving the detection device 1. The antenna 16 is a receiving element for the RFID tag 23 described later to receive radio waves.

  The control board 21 is equipped with a microprocessor, RAM, ROM, and the like, and controls the operation of the entire detection apparatus 1. The flash memory 22 is a memory that stores various types of information received from the outside. The RFID tag 23 is a tag that can perform wireless communication conforming to a standard such as ISO 14443A or ISO 18000-TypeC. The RFID tag 23 can generate and drive electric power using radio waves received via the antenna 16. The RFID tag 23 has a memory area of a certain capacity inside. The battery 24 is a battery that stores electric power for operating the detection device 1. The acceleration sensor 25 detects acceleration in three axis directions.

  In addition, LED13 and the solar panel 14 are arbitrary components. The flash memory 22 is an arbitrary component, and all information received from the outside may be stored in the RFID tag 23.

  Moreover, the detection apparatus 1 may be comprised by the general purpose computer which has an element shown by FIG. Such a computer has a CPU (Central Processing Unit) as a control device, a RAM (Random Access Memory) as a storage area, a ROM (Read Only Memory), an HDD (Hard Disk Drive), and the like. Such a computer can function as the detection apparatus 1 described in the present embodiment by executing a program having functions described later.

≪2.2 Function explanation≫
FIG. 5 is a functional block diagram of the detection apparatus 1 according to this embodiment. As illustrated in FIG. 5, the detection apparatus 1 includes a wireless communication unit 101, a display control unit 102, a display unit 103, a detection unit 104, an acquisition unit 105, a recording unit 106, a determination unit 107, And a storage unit 150.

  The storage unit 150 is configured by the flash memory 22 or the RFID tag 23 shown in FIG. 4, and stores article data 151, acceleration data 152, and detection date / time data 153.

  FIG. 6 shows an example of a table for storing article data. As shown in FIG. 6, the article data represents an ID and a name. The ID is an identifier assigned to the detection device 1, a transport container to which the detection device 1 is attached, or an article to be transported by the transport container. The name is a name that describes the contents of the detection device 1, the transport container to which the detection device 1 is attached, or the article transported by the transport container. The article data is provided from the RFID writer 7, for example. The article data may include arbitrary additional information such as a detailed description of the article and the date and time when the article data was written. Further, the article data may include only an ID.

FIG. 7 is a diagram showing acceleration data. In FIG. 7, the horizontal axis represents time (seconds), and the vertical axis represents the magnitude of acceleration (m / s ² ). As shown in FIG. 7, the acceleration data is the magnitude of acceleration every certain time (for example, several to several hundred milliseconds). The acceleration may be the acceleration in the horizontal direction (x axis, y axis), the acceleration in the vertical direction (z axis), or the sum of these.

  FIG. 7A shows an example of acceleration data detected when the ratio of the solid in the cooling agent 5 is large, and FIG. 7B is detected when the ratio of the liquid in the cooling agent 5 is large. Represents an example of acceleration data. As shown in FIGS. 7A and 7B, in an environment in which a constant vibration is detected, when the ratio of the liquid of the coolant 5 is large, the liquid portion is subjected to vibration applied to the detection device 1. By functioning as a buffering agent, the magnitude and change in detected acceleration is reduced.

  The acceleration detected by the acceleration sensor is represented by a coordinate system (device coordinate system) used inside the acceleration sensor. For example, the height direction of the detection apparatus 1 is set to the z-axis using existing technology. May be converted into an acceleration such that Further, since the acceleration in the z-axis direction includes the influence of gravitational acceleration, it may be used after removing it.

  The wireless communication unit 101 shown in FIG. 5 includes the RFID tag 23 and the antenna 16 shown in FIG. 4, and can communicate with the RFID writer 7 or the RFID reader 9 wirelessly. For example, the wireless communication unit 101 receives an ID and a name related to an article from the RFID writer 7 and records these pieces of information as article data 151 (FIG. 6) in the storage unit 150.

  The display control unit 102 includes the control board 21 shown in FIG. 4 and controls information displayed on the display 11. For example, the display control unit 102 may control the display unit 103 to display the article data 151 (that is, ID and name) stored in the storage unit 150 and the current temperature through a screen as shown in FIG. it can. As described above, when only the ID is included in the article data, the name may not be displayed.

  The display unit 103 includes the display 11 illustrated in FIG. 4 and displays information according to the control of the display control unit 102.

  The detection unit 104 includes the temperature sensor 12 and the acceleration sensor 25 shown in FIG. 4 and detects temperature and acceleration.

  The acquisition unit 105 includes the control board 21 shown in FIG. 4, and the temperature and acceleration detected by the detection unit 104 periodically or irregularly (for example, according to a certain time or an external command). To get.

  The recording unit 106 includes the control board 21 shown in FIG. 4 and records the acceleration acquired by the acquisition unit 105 as acceleration data 152 (FIG. 7) in the storage unit 150.

  The determination unit 107 includes the control board 21 shown in FIG. 4 and reads the acceleration data 152 stored in the storage unit 150 to determine whether the magnitude of the acceleration satisfies a predetermined condition. Then, when the predetermined condition is satisfied, the determination unit 107 determines that the temperature of the cooling agent 5 is higher than the predetermined temperature, and detects a message indicating that and the current date and time in the storage unit 150. Stored as date / time data 153. Further, the determination unit 107 instructs the display control unit 102 to display a message indicating that fact and the current date and time.

  Here, an example of a specific determination method by the determination unit 107 will be described. For example, the determination unit 107 reads the acceleration data 152 for a certain period and determines whether the maximum value of the acceleration during the period is below a threshold value. Then, the determination unit 107 determines that the temperature of the cooling agent 5 has become higher than a predetermined temperature when the maximum value is below the threshold value.

  Alternatively, the determination unit 107 reads the acceleration data 152 for a certain period, determines whether the difference between the maximum value and the minimum value of the acceleration during the period is below the threshold, and the difference is below the threshold. In this case, it may be determined that the temperature of the coolant 5 is higher than a predetermined temperature.

  Alternatively, the determination unit 107 reads the acceleration data 152 for a certain period, determines whether the period of change in the magnitude of acceleration within the period exceeds a threshold value, and if the period exceeds the threshold value, It may be determined that the temperature of the agent 5 has become higher than a predetermined temperature.

  The determination unit 107 is not limited to these examples, and can determine that the temperature of the cryogen 5 is higher than a predetermined temperature based on an arbitrary determination condition.

  FIG. 9 shows an example of a screen that displays a message indicating that the temperature of the cooling agent 5 has become higher than a predetermined temperature. In the example of FIG. 9, the date “2014/1/25 1:37:00” determined by the determination unit 107 is displayed on the screen together with the message “temperature rise detection”.

≪2.3 Explanation of operation≫
Next, operation | movement of the detection apparatus 1 which concerns on this embodiment is demonstrated using FIG. 10, FIG.

  FIG. 10 is a sequence diagram showing the flow of article information and temperature display processing of the detection apparatus 1 according to the present embodiment. In the sequence shown in FIG. 10, the detection apparatus 1 first receives information related to the conveyed article from the RFID writer 7 used by the worker. Next, the detection device 1 displays the information and the temperature detected by the temperature sensor 12 as needed while being transported in the physical distribution process. Finally, the detection device 1 is read by the RFID reader 9 used by the worker.

  First, the wireless communication unit 101 of the detection apparatus 1 receives a wireless signal including an ID and a name related to an article to be conveyed from the RFID writer 7 (step S1). Next, the wireless communication unit 101 stores the received ID and name as article data 151 (FIG. 6) in the storage unit 150 (step S2).

  Next, the acquisition unit 105 acquires the temperature detected by the detection unit 104 (step S3). The acquisition unit 105 passes the acquired temperature to the display control unit 102 (step S4). The display control unit 102 reads the article data 151 stored in the storage unit 150 (step S5). Then, the display control unit 102 instructs the display unit 103 to display a screen including the received temperature and the ID and name included in the read article data 151 (step S6). In response to the instruction, the display unit 103 displays, for example, the screen shown in FIG. 8 (step S7).

  Thereafter, as in steps S3 to S7, the acquisition unit 105 acquires the temperature from the detection unit 104 regularly or irregularly, and the display unit 103 displays the updated temperature (steps S8 to S11). ). Since the article data 151 is not updated, the display control unit 102 does not have to execute the process of reading the article data 151 once after reading the article data 151 in step S5. Steps S8-S11 are repeatedly executed.

  Then, the wireless communication unit 101 receives an article data read signal from the RFID reader 9 (step S12). The wireless communication unit 101 reads the article data 151 stored in the storage unit 150 (step S13). The wireless communication unit 101 transmits the read article data 151 to the RFID reader 9 (step S14).

  By the detection device 1 that performs the above-described operation, the worker or the recipient of the article can check the information and temperature of the article from the displayed screen.

  Note that the screen shown in FIG. 8 is updated when new article data is written from the RFID writer 7 or the like. For example, when a new ID or name different from the original is stored in the storage unit 150 due to a change in an article to be conveyed, the display unit 103 can display the new ID or name.

  FIG. 11 is a sequence diagram showing the flow of determination processing of the detection apparatus 1 according to this embodiment. The sequence shown in FIG. 11 may be executed in parallel with the sequence shown in FIG.

  First, the acquisition unit 105 acquires the acceleration detected by the detection unit 104 (step S21). The acquisition unit 105 passes the acquired acceleration to the recording unit 106 (step S22). The recording unit 106 stores the received acceleration together with the current date and time as acceleration data 152 in the storage unit 150.

  Furthermore, acceleration is acquired by the same processing as steps S21 to S23 (steps S24 to S26). It is assumed that the acceleration data shown in FIG. 7A is stored by repeatedly executing such processing.

  The determination unit 107 refers to the acceleration data 152 stored in the storage unit 150 and reads, for example, the acceleration from the current time to a certain time before (step S27). Next, the determination unit 107 determines whether the maximum value of the read acceleration is below a predetermined threshold (step S28). Here, it is assumed that the maximum value is not lower than the predetermined threshold value, and the determination unit 107 determines that the temperature of the cold insulation agent 5 is kept below the predetermined temperature.

  Furthermore, the same processing as steps S21 to S26 is repeatedly executed (steps S29 to S34). It is assumed that the acceleration data shown in FIG. 7B is stored by repeatedly executing such processing.

  The determination unit 107 refers to the acceleration data 152 stored in the storage unit 150 and reads, for example, acceleration from a current time to a predetermined time before (step S35). Next, the determination unit 107 determines whether the read maximum acceleration value is below a predetermined threshold (step S36). Here, it is assumed that the maximum value is below a predetermined threshold. The determination unit 107 determines that the temperature of the cooling agent 5 has become higher than the predetermined temperature, and acquires the current date and time (“2014/1/25 01:37:00”) (step S37).

  Next, the determination unit 107 stores the current date and time (“2014/1/25 01:37:00”) as detection date and time data in the storage unit 150 (step S38). Then, the determination unit 107 instructs the display control unit 102 to display a screen including a message “temperature increase detection” indicating that a temperature increase has been detected and the acquired date and time (step S39). The display control unit 102 instructs the display unit 103 to display the screen as instructed (step S40). In response to the instruction, the display unit 103 displays, for example, the screen shown in FIG. 9 (step S41).

Thereafter, the wireless communication unit 101 receives a read signal of the detection date / time data 153 from the RFID reader 9 (step S42). The wireless communication unit 101 reads the detection date / time data 153 stored in the storage unit 150 (step S43). Then, the wireless communication unit 101 transmits the read detection date / time data 153 to the RFID reader 9 (step S44). The RFID reader 9 that has read the detection date / time data 153 and has detected that the temperature in the transport container has not been properly maintained, uses a network such as a cellular phone communication network, for example, to indicate that unauthorized processing has occurred. Can be notified to an external management system (step S45).
With the detection device 1 that performs the above-described operation, the recipient of the article can recognize an unauthorized increase in the temperature in the transport container. In addition, the article transporter can detect an unauthorized increase in the temperature in the transport container during the physical distribution process. By confirming the date and time when the temperature has risen, the article transporter can identify the point in time when the fraud occurred, and can pursue the process in which the problem occurred.

  Note that the “temperature rise detection” message and date and time shown in FIG. 9 continue to be displayed unless a special signal for canceling the display is received from another device (for example, RFID writer). Also good. Thereby, it can prevent that the operator who conveys articles | goods erases a display illegally.

≪3. Second embodiment >>
Next, a second embodiment of the present invention will be described with reference to FIGS. In the following description, differences from the above-described detection device 1 according to the first embodiment will be mainly described.

  FIG. 12 is a schematic diagram of the detection apparatus 1A according to the present embodiment. Unlike the detection device 1 shown in FIG. 2, the detection device 1 </ b> A has a sensor 15 that detects the position of the marker 51 provided at a predetermined position of the cold insulation agent 5 on the surface in contact with the cold insulation agent 5. The detection apparatus 1 </ b> A can detect that the melting of the cooling agent 5 has not progressed by continuously detecting the marker 51 using the sensor 15. In other words, the detection device 1 </ b> A is configured such that when the marker 51 is no longer detected by the sensor 15 or when the position where the marker 51 is detected has changed by a certain amount, It can be detected that the temperature has risen.

  FIG. 13 is a view of the housing of the detection apparatus 1 </ b> A according to the present embodiment as viewed from the side in contact with the cold insulating agent 5. As shown in FIG. 13, the sensor 15 is provided at a position where the marker 51 of the cooling agent 5 can be detected.

  FIG. 14 is a diagram illustrating a hardware configuration example of the detection apparatus 1A according to the present embodiment. Unlike the detection apparatus 1 shown in FIG. 4, the detection apparatus 1 </ b> A has an optical sensor 26 instead of the acceleration sensor 25. The optical sensor 26 can detect, for example, a marker 51 of a color different from that of the cooling agent 5 provided on the surface of the cooling agent 5.

  The optical sensor 26 is an example of a sensor for detecting the marker 51. For example, instead of the optical sensor 26, the detection device 1A may include a device such as a camera that can optically detect the marker 51. In addition, the detection device 1A may include a device such as a magnetic sensor that can magnetically detect the position of the metal marker 51, for example. In addition, the detection device 1A may include, for example, a device such as a contact sensor that can detect contact of the protrusion of the marker 51 that physically protrudes. In the present invention, any means for detecting a shift in the relative positional relationship between the detection apparatus 1A and the cooling agent 5 can be used.

  FIG. 15 is a functional block diagram of the detection apparatus 1A according to the present embodiment. Unlike the detection device 1 illustrated in FIG. 5, the determination unit 107 of the detection device 1 </ b> A performs determination using the detection data acquired from the detection unit 104 through the acquisition unit 105. That is, the determination unit 107 determines whether or not the detection data acquired by the detection unit 104 includes more colors specific to the marker 51 than a certain ratio. When the color unique to the marker 51 is not included more than a certain ratio, the determination unit 107 determines that the cooling agent 5 is melted by a certain amount, and the temperature of the cooling agent 5 is such that the positions of the optical sensor 26 and the marker 51 are the same. Judge that it has shifted. That is, the determination unit 107 determines that the temperature of the cooling agent 5 has become higher than a predetermined temperature.

  FIG. 16 is a sequence diagram showing the flow of determination processing of the detection apparatus 1A according to this embodiment.

  First, the acquisition unit 105 acquires detection data (image) detected by the detection unit 104 (step S51). The acquisition unit 105 passes the acquired detection data to the determination unit 107 (step S52).

  The determination unit 107 detects a ratio occupied by the color unique to the marker 51 in the detection data, and determines whether the ratio is below a predetermined threshold (step S53). Here, it is assumed that the ratio does not fall below a predetermined threshold value, and the determination unit 107 determines that the temperature of the cooling agent 5 is maintained at a predetermined temperature or lower.

  Further, the same processing as in steps S51 to S53 is repeatedly executed (steps S54 to S56).

  The determination unit 107 detects the ratio of the unique color of the marker 51 in the received detection data again, and determines whether the ratio is below a predetermined threshold (step S56). Here, it is assumed that the ratio is below a predetermined threshold. The determination unit 107 determines that the temperature of the cooling agent 5 has become higher than the predetermined temperature, and acquires the current date and time (“2014/1/25 01:37:00”) (step S57).

  Next, the determination unit 107 stores the current date and time (“2014/1/25 01:37:00”) as detection date and time data in the storage unit 150 (step S58). Then, the determination unit 107 instructs the display control unit 102 to display a screen including a message “temperature increase detection” indicating that a temperature increase is detected and the acquired date and time (step S59). The display control unit 102 instructs the display unit 103 to display the screen as instructed (step S60). In response to the instruction, the display unit 103 displays, for example, the screen shown in FIG. 9 (step S61).

Thereafter, the wireless communication unit 101 receives a read signal of the detection date / time data 153 from the RFID reader 9 (step S62). The wireless communication unit 101 reads the detection date / time data 153 stored in the storage unit 150 (step S63). Then, the wireless communication unit 101 transmits the read detection date / time data 153 to the RFID reader 9 (step S64). The RFID reader 9 that has read the detection date / time data 153 and has detected that the temperature in the transport container has not been properly maintained, uses a network such as a cellular phone communication network, for example, to indicate that unauthorized processing has occurred. Can be notified to an external management system (step S65).
With the detection device 1A that performs the above-described operation, it is possible to detect an unauthorized increase in temperature in the transport container using an optical sensor instead of using an acceleration sensor. In this case, it is not necessary to accumulate acceleration data, which is particularly effective when there is a limitation on the storage capacity.

  The present invention has been described above by the preferred embodiments of the present invention. While the invention has been described with reference to specific embodiments, various modifications and changes may be made to the embodiments without departing from the broad spirit and scope of the invention as defined in the claims. Obviously you can. In other words, the present invention should not be construed as being limited by the details of the specific examples and the accompanying drawings.

DESCRIPTION OF SYMBOLS 1, 1A Detection apparatus 11 Display 12 Temperature sensor 21 Control board 23 RFID tag 24 Battery 25 Acceleration sensor 26 Optical sensor 101 Wireless communication part 102 Display control part 103 Display part 104 Detection part 105 Acquisition part 106 Storage part 150 Storage part 151 Article data 152 Acceleration data 153 Detection date / time data

JP 2000-302111 A JP 63-252797 A JP 2004-315154 A JP 2004-323169 A JP 2010-218256 A

Claims (13)

A device attached to an object,
A detector that detects the movement of an object whose state changes in response to a change in temperature;
A determination unit for determining whether the magnitude of the movement satisfies a predetermined condition;
A storage unit for storing a date and time when the predetermined condition is satisfied when the magnitude of the movement satisfies the predetermined condition;
Having a device. The detection unit detects a movement of the object that is a cryogen frozen at a low temperature,
The determination unit determines whether the temperature of the object is higher than a predetermined temperature by determining whether the magnitude of the movement satisfies the predetermined condition,
The apparatus of claim 1. The detection unit detects the movement of the object by detecting acceleration;
The apparatus of claim 2. The determination unit determines whether the temperature of the object is higher than a predetermined temperature by determining whether a maximum value of the acceleration detected within a predetermined time is smaller than a predetermined value. ,
The apparatus of claim 3. The detection unit detects the movement of the object by detecting the position of the marker marked on the cold insulation agent,
The apparatus of claim 2. The apparatus according to claim 1, further comprising: a display unit that displays a date and time stored in the storage unit that satisfies the predetermined condition. Depending on the result of the determination by the determination unit, the content of the display by the display unit is updated.
The apparatus according to claim 6. The display by the display unit is erased by receiving a display release signal from another device.
Apparatus according to claim 6 or 7. The device is stored in a transport container used in the logistics process,
The display unit displays information of an article conveyed by the conveyance container;
Apparatus according to any one of claims 6 to 8. The communication unit according to claim 1, further comprising: a communication unit that receives a read signal from a wireless terminal and transmits the date and time stored in the storage unit to the wireless terminal in response to reception of the read signal. The device described. A communication unit that receives a write signal including information about the device from a wireless terminal;
The display unit displays received information on the device;
Apparatus according to any one of claims 6 to 9. A method performed by a device attached to an object, comprising:
A detection stage for detecting the movement of an object whose state changes in response to a change in temperature;
Determining whether the magnitude of the movement satisfies a predetermined condition;
A storage step of storing a date and time when the predetermined condition is satisfied when the magnitude of the movement satisfies the predetermined condition;
Having a method. To a computer that operates as a device attached to an object,
A detection stage for detecting the movement of an object whose state changes in response to a change in temperature;
Determining whether the magnitude of the movement satisfies a predetermined condition;
A storage step of storing a date and time when the predetermined condition is satisfied when the magnitude of the movement satisfies the predetermined condition;
A program that executes

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