JP2016161294A - Data logger and transport state grasping method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data logger capable of easily grasping the abnormality of a transport state over the whole processes from reception of a package from a customer to delivery to a destination.SOLUTION: A data logger 10 provided to a package includes: sensors 161, 162, 163, 164, 165, 166; and a communication section 12 for performing radio transmission according to detection of abnormality when measurement values measured by the sensors 161, 162, 163, 164, 165, 166 meet preset abnormality conditions to be detected as the abnormality.SELECTED DRAWING: Figure 3

Description

  Embodiments described herein relate generally to a data logger and a transportation status grasping method.

  At the logistics site where the goods are transported, the temperature and humidity of the goods are kept within a set range, and the condition of the goods is monitored so that the goods are not inverted (upside down) or tilted. In monitoring the transportation status of this package, a temperature / humidity meter is installed in the warehouse (including refrigeration and freezer) where the package is stored and in the transport vehicle that transports the package, and the measured temperature / humidity is visually observed. Or it is acquired by communication. In addition, packages that are not used upside down and are handled so as not to be upside down or tilted are dealt with by affixing display.

JP 2000-302111 A

  However, in the above-described conventional technology, there is a problem that it is difficult to easily know that there is no abnormality in the transportation situation over the entire process from receipt of the package from the customer to delivery to the delivery destination.

  For example, when loading a cargo from a warehouse into a transportation vehicle or when unloading from a transportation vehicle, the temperature or humidity of the luggage may temporarily exceed a set range by touching the luggage with outside air. Also, during transportation by a transportation truck, the luggage may be temporarily inclined due to vibration. As described above, even if there is an abnormality in the transportation situation, it is difficult to know the abnormality other than the situation outside the management of temperature and humidity in the warehouse and the transportation vehicle or outside the management by visual inspection.

  An object of one aspect of the present invention is to provide a data logger and a transportation status grasping method that can easily know an abnormality in the transportation status of a package.

  The first proposal is a data logger installed in a package, and detects an abnormality when a sensor unit and an abnormal condition set in advance as a condition for detecting a measurement value measured by the sensor unit as an abnormality are satisfied. And a communication unit that performs radio transmission according to.

  According to one embodiment of the present invention, it is possible to easily know an abnormality in the cargo transportation status.

FIG. 1 is an explanatory diagram illustrating an example of a data logger system according to the embodiment. FIG. 2 is an explanatory view for explaining the transportation of the luggage. FIG. 3 is a block diagram illustrating a configuration example of the data logger according to the embodiment. FIG. 4 is a block diagram illustrating a configuration example of the terminal device according to the embodiment. FIG. 5 is a ladder chart illustrating an operation example of the data logger and the terminal device according to the embodiment. FIG. 6 is a flowchart illustrating an operation example according to setting of monitoring conditions. FIG. 7 is a flowchart illustrating an operation example of the data logger according to the embodiment. FIG. 8 is an explanatory diagram for explaining the relationship between the gravity axis and the XYZ axes. FIG. 9 is an explanatory diagram for explaining the acceleration values of the XYZ axes. FIG. 10 is a flowchart illustrating an operation example of the data logger according to the embodiment. FIG. 11 is a flowchart illustrating an operation example of the terminal device according to the embodiment.

  Hereinafter, a data logger and a transport status grasping method according to an embodiment will be described with reference to the drawings. In the embodiment, configurations having the same functions are denoted by the same reference numerals, and redundant description is omitted. Note that the data logger and the transport status grasping method described in the following embodiments are merely examples, and do not limit the embodiments. In addition, the following embodiments may be appropriately combined within a consistent range.

  FIG. 1 is an explanatory diagram illustrating an example of a data logger system 100 according to the embodiment. As shown in FIG. 1, the data logger system 100 includes a data logger 1, a terminal device 3, and a server 4.

  The data logger 1 is a wireless tag that is installed in the luggage 2 and has various sensors, a memory that records the measured values of the sensors, and a communication unit that communicates with the terminal device 3. For example, the data logger 1 is attached to one surface of the luggage 2 as a label or a seal and used in a process of transporting the luggage 2.

  FIG. 2 is an explanatory diagram for explaining the transportation of the luggage 2. At the time of luggage storage (S1), the worker keeps the luggage 2 from the customer. At this time, the customer designates the transportation conditions of the luggage 2 such as temperature / humidity / topless, together with the destination of the luggage 2.

  For example, if the baggage 2 is a fresh food such as fruit or vegetable, specify refrigerated transport (for example, 0 to 5 ° C), and if it is a frozen food such as ice cream, transport it for freezing (for example, -5 ° C to- 10 ° C). In addition, when the luggage 2 is an electronic component, it designates transportation avoiding high humidity (for example, humidity 50% or less). In addition, when the luggage 2 is a broken object such as pottery, the topless useless transportation is designated to avoid the inverted state.

  The worker operates the terminal device 3 to input information relating to the package 2 such as a destination and transportation conditions designated by the customer, and registers them in the server 4. By registering the information related to the package 2, the server 4 manages and manages the package 2 stored by the customer. In addition, the worker creates a label describing the destination received from the customer and the transportation conditions and attaches the label to the package 2. In addition, the worker operates the terminal device 3 to set the transportation condition (monitoring condition) in the data logger 1.

  After the baggage 2 is deposited and the data logger 1 is pasted, it is delivered to the destination (S4) through storage in a warehouse (S2) and delivery by a transport vehicle (S3). When the worker delivers the package 2 to the destination (S4), the operator operates the terminal device 3 to register in the server 4 that the transport of the package 2 has been completed. During the period from S2 to S4, the data logger 1 is in a state of being affixed to the luggage 2, and the transportation status is monitored by various sensors in accordance with the set monitoring conditions. Further, during S2 to S4, the operator operates the terminal device 3 to communicate with the data logger 1, thereby confirming the measurement value recorded in the memory of the data logger 1, and reading out from the data logger 1. Information can be registered in the server 4. The data logger 1 is removed by the worker and reused when the package 2 arrives at the delivery destination (S4).

  FIG. 3 is a block diagram illustrating a configuration example of the data logger 1 according to the embodiment. As shown in FIG. 3, the data logger 1 has a control chip 10 and a battery 20. The control chip 10 is a part that controls the entire data logger 1. The battery 20 is a power source that supplies power to the entire data logger 1 and is, for example, a primary battery or a secondary battery.

  The control chip 10 includes an MPU 11 (MPU: Micro-Processing Unit), a communication unit 12, an LED 13 (LED: Light Emitting Diode), a buzzer 14, an FRAM 15 (FRAM (registered trademark): Ferroelectric RAM), and a sensor unit 16.

  The MPU 11 controls the operation of the entire control chip 10. The communication unit 12 includes an antenna 121 and performs wireless communication via the antenna 121 under the control of the MPU 11. For example, the communication unit 12 performs wireless communication based on a communication standard such as BTLE (Bluetooth Low Energy (registered trademark)). The LED 13 is turned on / off under the control of the MPU 11. For example, the LED 13 notifies the operation state of the data logger 1 by a lighting state such as lighting / extinguishing / flashing. The buzzer 14 outputs a buzzer sound under the control of the MPU 11. The FRAM 15 stores wireless communication setting information in the communication unit 12, various setting information such as identification information for identifying the data logger 1 such as a logger ID, and measurement information obtained by measurement of the sensor unit 16.

  The sensor unit 16 includes an acceleration sensor 161, an illuminance sensor 162, a geomagnetic sensor 163, a temperature sensor 164, a humidity sensor 165, and an atmospheric pressure sensor 166, and measures the movement / posture of the data logger 1 and the environment around the data logger 1. It is a sensor. The measurement value measured by the sensor unit 16 is output to the MPU 11. MPU11 memorize | stores the measured value output from the sensor part 16 in FRAM15 with the clock counter time-measured by the RTC (Real Time Clock) function.

  The acceleration sensor 161 is a sensor that measures an acceleration value in the XYZ-axis (three-axis) directions, and measures acceleration due to gravity and movement of the data logger 1. The illuminance sensor 162 measures the illuminance around the data logger 1. The geomagnetic sensor 163 measures geomagnetism. The temperature sensor 164 measures the temperature around the data logger 1. The humidity sensor 165 measures the humidity around the data logger 1. The atmospheric pressure sensor 166 measures the atmospheric pressure around the data logger 1.

  The terminal device 3 is a terminal used by a worker, and is, for example, a portable terminal such as a smartphone or a tablet terminal. The terminal device 3 may be a terminal installed in a storage location or a transport vehicle during storage in a warehouse (S2) or during delivery by a transport vehicle (S3). For example, it may be a fixed terminal such as a PC (Personal Computer) installed in a storage location or a terminal device installed in a driver's seat of a transport vehicle. Further, when the terminal device 3 is a fixed terminal, the terminal device 3 may communicate with the data logger 1 of the luggage 2 placed in the storage location or in the transport vehicle via the access point (AP). In the present embodiment, the terminal device 3 is exemplified by a portable terminal such as a smartphone or a tablet terminal.

  The terminal device 3 communicates with the data logger 1 via wireless communication such as BTLE standard. The terminal device 3 is connected to a communication network (not shown) such as a LAN (Local Area Network) or the Internet via wireless communication such as Wi-Fi standard, and communicates with the server 4 on the communication network. .

  FIG. 4 is a block diagram illustrating a configuration example of the terminal device 3 according to the embodiment. As illustrated in FIG. 4, the terminal device 3 includes an APU 30, a GPU 31, an LCD 32, a touch panel 33, a MEM 34, a flash ROM 35, a communication unit 36, an antenna 37, and a battery 38.

  An APU 30 (APU: Application Processor Unit) controls the operation of the entire terminal device 3 by developing a program stored in the flash ROM 35 or the like on the MEM 34 and sequentially executing the program. A GPU 31 (GPU: Graphics Processing Unit) controls display on the LCD 32 under the control of the APU 30. An LCD 32 (Liquid Crystal Display) is an output interface that displays various information on the screen under the control of the GPU 31. The touch panel 33 is an input interface that is arranged so as to overlap the LCD 32 and receives various user information and commands in response to a user's touch operation or the like. The MEM 34 (MEM: Memory) provides a work area when the flash ROM 35 executes a program. A flash ROM 35 (ROM: Read Only Memory) stores programs executed by the APU 30, various setting information, and the like. The communication unit 36 performs wireless communication via the antenna 37 under the control of the APU 30. For example, the communication unit 36 performs BTLE standard or Wi-Fi standard wireless communication. The battery 38 is a power source that supplies power to the entire terminal device 3.

  The server 4 is a server device that can communicate with each device connected to a communication network such as a LAN or the Internet, and comprehensively manages information related to the luggage 2 deposited from a customer. For example, the server 4 provides information related to the package 2 or information read from the data logger 1 of the package 2 registered by the terminal device 3 in response to an inquiry from a customer or a worker. An example is a Web server that provides information in response to an inquiry from a Web browser on an information processing apparatus such as a PC operated by a customer or a worker. A customer or a worker can check various information related to the luggage 2 by accessing the server 4.

  FIG. 5 is a ladder chart illustrating an operation example of the data logger 1 and the terminal device 3 according to the embodiment. As shown in FIG. 5, the MPU 11 of the data logger 1 receives the monitoring condition setting (S10) by the terminal device 3 performed at the time of luggage storage (S1) and the like, and the sensor unit 16 performs the monitoring according to the set monitoring condition. Monitoring is performed (S11). In the monitoring by the sensor unit 16, the MPU 11 of the data logger 1 sequentially stores the measured value obtained from the sensor unit 16 as measurement information in the FRAM 15 together with the timed clock counter.

  FIG. 6 is a flowchart showing an operation example according to the monitoring condition setting (S10). As shown in FIG. 6, the terminal device 3 accepts the transportation conditions of the luggage 2 such as temperature / humidity / uselessness by operating the touch panel 33, and inputs the monitoring conditions corresponding to the transportation conditions (S20). Next, the terminal device 3 transmits the input monitoring condition to the data logger 1 through the communication unit 36 (S21).

  For example, when the transportation condition is transportation in a refrigerator (for example, 0 to 5 ° C.), when the measured value by the temperature sensor 164 deviates from the transportation condition (0 to 5 ° C.), an abnormal level is set, which is much larger than the transportation condition. If this is the case (10 ° C or higher), input the monitoring condition for the alarm level. In the case of transportation avoiding high humidity (for example, humidity of 50% or less), the measured value by the humidity sensor 165 is regarded as an abnormal level when the transportation condition (humidity of 50% or less) falls outside the transportation condition. Enter the monitoring condition for the alarm level when the humidity is 70% or higher. In addition, in the case of transport without using the top and bottom, the monitoring condition is set to an abnormal level when the direction of the luggage 2 based on the measurement value of the acceleration sensor 161 is in the lying state, and an alarm level when the orientation of the luggage 2 is in the inverted state. Enter.

  The monitoring conditions described above may be obtained from the transportation conditions received by operating the touch panel 33 by referring to a table indicating the correspondence between the transportation conditions and the monitoring conditions, or may be directly input by operating the touch panel 33. May be.

  The MPU 11 of the data logger 1 performs monitoring by the sensor unit 16 according to the set monitoring condition (S11), and determines whether or not the measured value of the sensor unit 16 is the abnormality / alarm level set as the monitoring condition ( S12). Here, when it is not an abnormality / alarm level (S12: NO), MPU11 of the data logger 1 waits for a process.

  When the abnormality / alarm level is detected (S12: YES), the MPU 11 of the data logger 1 transmits a broadcast transmission indicating the abnormality / alarm level together with the logger ID indicating the data logger 1 that detected the abnormality / alarm level. 12 (S13). Broadcast transmission by the communication unit 12 is BTLE standard wireless transmission with a communication range of about 10 m, for example. Therefore, the terminal device 3 within the communication range of the data logger 1 can easily know the abnormality in the transportation status of the luggage 2 that is out of the transportation conditions by receiving the broadcast transmission from the data logger 1. In addition, since it is a broadcast transmission by radio, even if the baggage 2 that deviates from the transport conditions is hidden by another baggage 2, it is sure to the terminal device 3 within the communication range of the data logger 1. Can be notified.

  The broadcast transmission by the communication unit 12 may be performed sequentially at a predetermined cycle (for example, every 10 seconds) based on the counter value by the clock counter after the transmission is started once. Thereby, it is possible to sequentially notify the terminal device 3 that the state of the luggage 2 is abnormal / alarm level.

  The broadcast transmission by the communication unit 12 may be performed when the measurement value by the sensor unit 16 satisfies a predetermined condition under the control of the MPU 11. For example, when the illuminance value by the illuminance sensor 162 is equal to or less than a preset threshold value or greater than the threshold value, the MPU 11 controls to perform broadcast transmission by the communication unit 12. Thereby, broadcast transmission can be performed in accordance with the timing at which the illuminance changes, such as an operator carrying the terminal device 3 carrying the luggage 2 out of a warehouse or a transport vehicle.

  Further, when the movement of the luggage 2 is detected based on the measurement value obtained by the acceleration sensor 161, the MPU 11 may perform control so that the communication unit 12 performs broadcast transmission. In this case, broadcast transmission can be performed in accordance with the timing at which the worker carrying the terminal device 3 moves the luggage 2.

  Here, details of the operation of the data logger 1 when the transportation condition is useless upside down will be described. FIG. 7 is a flowchart illustrating an operation example of the data logger 1 according to the embodiment.

  As shown in FIG. 7, when the process is started, the MPU 11 of the data logger 1 loads the alarm / abnormality based on the setting of the monitoring condition when the terminal device 3 uses the top and bottom use as the transportation condition. A limit slope of 2 is acquired (S30). For example, the MPU 11 has an inclination in which the direction of the luggage 2 is in a laid-down state, and the inclination of the luggage 2 tilted up to 90 degrees with respect to the gravity axis is set as a limit inclination for occurrence of abnormality. Further, the MPU 11 is an inclination at which the direction of the luggage 2 is in an inverted state, and the inclination of the luggage 2 that is inclined until it coincides with the gravity axis is set as a limit inclination for alarm generation.

  Next, the MPU 11 measures the acceleration of the XYZ axes at the time of initial rest by the acceleration sensor 161 of the sensor unit 16 (S31), and calculates the inclination of the gravity axis with respect to the acceleration of the XYZ axes at the time of initial rest (S32).

FIG. 8 is an explanatory diagram for explaining the relationship between the gravity axis and the XYZ axes. In FIG. 8, the XYZ axes are three axes for measuring acceleration by the acceleration sensor 161. In S32, respective inclinations (θ _x , θ _y , θ _z ) of the acceleration sensor 161 with respect to the gravity axes of the XYZ axes are obtained.

For example, θ _x has a relationship of G (9.8) × cos (θ _x ) = X axis acceleration measurement value. Therefore, you are possible to determine the theta _x as θ _x = arccos ((acceleration measurement values of X-axis) /9.8). in the same manner as theta _x, can be obtained theta _y and theta _z.

  FIG. 9 is an explanatory diagram for explaining the acceleration values of the XYZ axes. The upper graph in FIG. 9 shows the base acceleration values (Xs, Ys, Zs) of the XYZ axes of the acceleration sensor 161 in the initial stationary state. The lower graph of FIG. 9 shows the base acceleration values (Xd, Yd, Zd) of each axis during conveyance.

  As shown in FIG. 9, in the stationary state, since the base acceleration value (Xs, Ys, Zs) of each axis is constant, the inclination of the gravity axis can be calculated using one measurement value. On the other hand, since it is considered that the acceleration value constantly fluctuates during conveyance, the base acceleration value (Xd, Yd, Zd) of each axis is obtained from a plurality of measurement results. For example, the process of calculating the standard deviation (σ) is repeated except for the set having the largest difference from the median from the set of multiple measurement values for each axis. Then, when the standard deviation value is equal to or less than a predetermined threshold value, the median value in the set is set as the base acceleration value (Xd, Yd, Zd).

Here, the inclination of the gravity axis with respect to the acceleration of the XYZ axes (base acceleration values (Xs, Ys, Zs)) at the time of initial rest is defined as (θ _xs , θ _ys , θ _zs ). Further, the inclination of the gravity axis with respect to the XYZ-axis acceleration (base acceleration values (Xd, Yd, Zd)) during conveyance (other than the initial stationary state) is defined as (θ _xd , θ _yd , θ _zd ). Further, it is assumed that the data logger 1 is attached to the baggage 2 in an upright state, and the inclination of the gravity axis at the initial stationary time is obtained. Therefore, the inclination degree of the load 2 is obtained as | θ _xd −θ _xs |, | θ _yd −θ _ys |, | θ _yd −θ _ys | for each axis.

Next, the MPU 11 starts clock counting in the RTC function (S33), waits for a certain period (S34), and then measures the XYZ-axis acceleration (base acceleration values (Xd, Yd, Zd)) by the acceleration sensor 161 (S35). ). Next, the MPU 11 calculates inclinations (θ _xd , θ _yd , θ _zd ) of the gravity axis with respect to the measured accelerations of the XYZ axes (S36).

Next, the MPU 11 determines the degree of inclination of the load 2 based on the inclination of the gravity axis in S32 (θ _xd , θ _yd , θ _zd ) and the inclination of the gravity axis in S36 (θ _xd , θ _yd , θ _zd ). Ask for. Next, the MPU 11 determines whether or not the inclination of the luggage 2 is inclined to the abnormality occurrence level, which is the limit inclination of the luggage 2 that causes the abnormality (S37). For example, it is determined whether or not the load 2 is tilted in a direction in which the bag 2 is tilted sideways.

  When leaning to the abnormality occurrence level (S37: YES), the MPU 11 performs broadcast transmission indicating the occurrence of abnormality by the communication unit 12 (S38). For example, broadcast transmission indicating the occurrence of an abnormality is performed by setting a flag indicating the occurrence of an abnormality in a transmission signal transmitted by the communication unit 12 wirelessly.

  When it is not inclined to the abnormality occurrence level (S37: NO), the MPU 11 determines whether or not it is inclined to the alarm level where the inclination of the luggage 2 becomes the limit inclination of the luggage 2 that causes an alarm (S39). For example, it is determined whether or not the baggage 2 is tilted in a direction in which the baggage 2 is tilted.

  When leaning to the alarm level (S39: YES), the MPU 11 performs broadcast transmission indicating the alarm level by the communication unit 12 (S40). For example, broadcast transmission indicating an alarm level is performed by setting a flag indicating an alarm level on a transmission signal transmitted by the communication unit 12 wirelessly.

  Next, details of the operation of the data logger 1 when the transportation condition is the designation of temperature and humidity will be described. FIG. 10 is a flowchart illustrating an operation example of the data logger 1 according to the embodiment.

  As shown in FIG. 10, when the process is started, the MPU 11 of the data logger 1 determines the temperature / humidity range of the load 2 that causes an alarm / abnormality based on the temperature / humidity transport conditions by the terminal device 3. Obtain (S50). For example, in the case of refrigeration (0 to 5 ° C.), the MPU 11 sets 5 ° C. ≦ (temperature) <10 ° C. as an abnormal temperature range and 10 ° C. ≦ (temperature) as an alarm temperature range. When the humidity is 50% or less, 50% ≦ (humidity) <70% is an abnormal humidity range, and 70% ≦ (humidity) is an alarm humidity range.

  Next, the MPU 11 starts clock counting in the RTC function (S51), waits for a certain period (S52), and measures the temperature and humidity by the temperature sensor 164 and the humidity sensor 165 (S53).

  Next, the MPU 11 determines whether or not the measured temperature / humidity range is an abnormality occurrence level (S54). For example, in the above-described example of refrigeration, when the measured temperature value satisfies 5 ° C. ≦ (temperature) <10 ° C., the abnormality occurrence level is set. Similarly, in the example of humidity, when the measured humidity value satisfies 50% ≦ (humidity) <70%, the abnormality occurrence level is set.

  When the measured temperature / humidity range is at the abnormality occurrence level (S54: YES), the MPU 11 performs broadcast transmission indicating the occurrence of temperature / humidity abnormality by the communication unit 12 (S55). For example, the broadcast transmission indicating the occurrence of an abnormality is performed by setting a flag indicating the occurrence of an abnormality in temperature / humidity in a transmission signal transmitted by the communication unit 12 wirelessly.

  When the measured temperature / humidity range is not an abnormality occurrence level (S54: NO), the MPU 11 determines whether the measured temperature / humidity range is an alarm level (S56). For example, in the refrigeration example described above, it is assumed that the alarm level is reached when the measured temperature value satisfies 10 ° C. ≦ (temperature). Similarly, in the example of humidity, it is assumed that the alarm level is reached when the measured humidity value satisfies 70% ≦ (humidity).

  When the measured temperature / humidity range is at the alarm level (S56: YES), the MPU 11 performs broadcast transmission indicating that the temperature / humidity is at the alarm level by the communication unit 12 (S57). For example, broadcast transmission of an alarm level is performed by setting a flag indicating that the temperature / humidity is an alarm level in a transmission signal transmitted by the communication unit 12 wirelessly.

  Returning to FIG. 5, the terminal device 3 receives the broadcast transmission indicating the abnormality / alarm level, and displays the abnormality / alarm on the display screen of the LCD 32 (S14).

  FIG. 11 is a flowchart illustrating an operation example of the terminal device 3 according to the embodiment. As shown in FIG. 11, when the process is started, the APU 30 of the terminal device 3 waits for reception of a broadcast transmission from the data logger 1 (S60).

  Next, when receiving a broadcast transmission from the data logger 1 (S61), the APU 30 determines whether or not an abnormality has occurred based on a flag or the like included in the broadcast transmission (S62).

  If an abnormality has occurred (S62: YES), the APU 30 displays on the display screen of the LCD 32 that the abnormality has occurred in the package 2 together with the logger ID included in the broadcast transmission (S63). Thus, the worker can recognize that an abnormality has occurred in the luggage 2 indicated by the logger ID.

  If no abnormality has occurred (S62: NO), the APU 30 determines whether or not there is an alarm based on a flag or the like included in the broadcast transmission (S64).

  If it is an alarm (S64: YES), the APU 30 displays on the display screen of the LCD 32 a warning that an alarm level abnormality has occurred in the package 2 together with the logger ID included in the broadcast transmission (S65). As a result, the worker can recognize that an alarm level abnormality has occurred in the luggage 2 indicated by the logger ID.

  In S63 and S65, the APU 30 may inquire the server 4 about information related to the package 2 based on the logger ID included in the broadcast transmission, and display the obtained package 2 information on the display screen. Thereby, the worker can confirm the details of the luggage 2 in which the abnormality / alarm level abnormality has occurred.

  Returning to FIG. 5, the APU 30 of the terminal device 3 requests the data of the measurement value recorded in the FRAM 15 to the data logger 1 through communication by the communication unit 36. The MPU 11 of the data logger 1 reads the measurement value data recorded in the FRAM 15 in response to a request from the terminal device 3, and sends it back to the terminal device 3 through the communication unit 12. Thereby, the terminal device 3 reads data from the data logger 1 (S15).

  At the time of reading data from the terminal device 3 (S15), the MPU 11 of the data logger 1 ends the broadcast transmission by the communication unit 12 started in S13. Specifically, the MPU 11 of the data logger 1 reads the measurement value data recorded in the FRAM 15 in response to a request from the terminal device 3 and returns it to the terminal device 3, and ends the broadcast transmission by the communication unit 12. As described above, when the terminal device 3 confirms the data of the measurement value recorded in the FRAM 15, the broadcast transmission is terminated, thereby preventing the duplicate confirmation.

  Next, the APU 30 of the terminal device 3 outputs the data read in S15 onto the display screen of the LCD 32 (S16). Thereby, the worker can confirm the details of the abnormality / alarm level abnormality occurring in the luggage 2 from the data of the measurement values recorded in the FRAM 15. In S16, the APU 30 may output the data read from the data logger 1 to the server 4 from the communication unit 36 after attaching the logger ID. Thereby, the server 4 can manage the details of the abnormality / alarm level abnormality that has occurred in the luggage 2.

  Various processing functions performed in the data logger 1 and the terminal device 3 may be executed entirely or arbitrarily on a microcomputer such as the MPU 11 or the APU 30. In addition, various processing functions may be executed in whole or in any part on a program that is analyzed and executed by a CPU (or a microcomputer such as MPU or APU) or on hardware based on wired logic. Needless to say, it is good.

  The program executed on the microcomputer such as the MPU 11 or the APU 30 may be stored in a readable storage medium, for example. The readable storage medium corresponds to, for example, a portable recording medium such as a CD-ROM, a DVD disk, a USB (Universal Serial Bus) memory, a semiconductor memory such as a flash memory, a hard disk drive, and the like. Alternatively, the program may be stored in a device connected to a public line, the Internet, a LAN, or the like, and the program may be read and executed from these.

DESCRIPTION OF SYMBOLS 1 ... Data logger 2 ... Baggage 3 ... Terminal device 4 ... Server 10 ... Control chip 11 ... MPU
12 ... Communication unit 13 ... LED
14 ... Buzzer 15 ... FRAM
16 ... Sensor unit 20 ... Battery 30 ... APU
31 ... GPU
32 ... LCD
33 ... Touch panel 34 ... MEM
35 ... Flash ROM
36 ... Communication unit 37 ... Antenna 38 ... Battery 100 ... Data logger system 121 ... Antenna 161 ... Acceleration sensor 162 ... Illuminance sensor 163 ... Geomagnetic sensor 164 ... Temperature sensor 165 ... Humidity sensor 166 ... Pressure sensor

Claims (6)

A data logger installed in the luggage,
A sensor unit;
When a measurement value measured by the sensor unit satisfies an abnormal condition set in advance as a condition for detecting an abnormality, a communication unit that performs wireless transmission according to the detection of the abnormality,
A data logger characterized by comprising: The data logger according to claim 1, wherein the wireless transmission in response to the detection of the abnormality is a broadcast transmission for a predetermined communication range. The data logger according to claim 1, wherein the communication unit performs the wireless transmission at a predetermined cycle after starting the wireless transmission according to the detection of the abnormality. The communication unit, when the measurement value satisfies a preset transmission condition, performs wireless transmission according to detection of the abnormality after the measurement value is determined to satisfy an abnormality condition. Item 4. The data logger according to any one of Items 1 to 3. A recording unit for recording the measured value;
The said communication part terminates the radio | wireless transmission according to the detection of the said abnormality according to reading of the measured value recorded on the said recording part. The Claim 1 thru | or 4 characterized by the above-mentioned. Data logger. When the data logger installed in the baggage satisfies the abnormal condition set in advance as a condition for the measurement value measured by the sensor unit to be detected as abnormal, radio transmission is performed according to the detection of the abnormality,
When the terminal device receives wireless transmission in response to the detection of the abnormality, the abnormality is notified.

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