JP2020064416A - Maintenance device and maintenance system - Google Patents

Abstract

To further prolong a service life of a battery in the case of battery drive by reducing power required in transmitting operation information on operation of a monitoring object device to a server to achieve energy saving and reducing a running cost like communication charge.SOLUTION: A maintenance device (100) includes: a storage unit (10) for storing operation information on operation of a monitoring object device from the monitoring object device; a reduction processing unit (210) for generating reduction data by reducing a data amount of the operation information stored by the storage unit (10); and a communication unit (30) for transmitting the reduction data generated by the reduction processing unit (210) to a server (200) through a cellular phone communication line (CL).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a maintenance device and a maintenance system.

  Patent Document 1 discloses a state recording device that constantly monitors the state of an automatic machine of a production facility that monitors the state of the facility and records the monitored state as data. The state recording device stores only the fact that there is a specified periodic operation within the allowable range of the specified cyclic operation, and stores the detailed state outside the allowable range of the specified cyclic operation.

JP-A-2003-58246 (Published February 28, 2003)

  The state recording device disclosed in Patent Document 1 does not assume that the recorded data is transmitted to the server. For this reason, in the state recording device, in the case of simply providing a communication function in the state recording device, in order to transmit the recorded data to the server, a communication unit is provided in the state recording device as a communication function. If provided, there is a problem that communication costs are wasted if the recorded data continues to be transmitted to the server.

  Further, in the state recording device, for example, when the communication unit is a mobile phone, communication is performed in addition to transmission / reception to / from the server. There is a problem that costs are wasted. For communication other than sending and receiving to the server, for example, when using a normal mobile phone, there is a high possibility that the mobile phone will move, so in the standby state of the mobile phone, the mobile phone number etc. to the nearest base station There is communication because it is a mobile phone, such as periodically communicating with the mobile phone to obtain position information. This increases communication costs. The security device according to one embodiment of the present invention is often used by being attached to a device to be monitored whose position is fixed, and thus it is not necessary to periodically acquire position information. Other than that, there is no problem even if the power supply to the communication unit is cut off.

  If the security device moves (when the security device is mounted on a truck, etc.), the power supply to the communication unit is normally shut off and the power supply to the communication unit is not performed during transmission. When starting, it takes some time for the position of the security device to be detected. However, the transmission of such information for security does not require responsiveness like a normal mobile phone, and no problem occurs. Accordingly, the maintenance device according to one embodiment of the present invention can significantly contribute to energy saving by reducing power consumption and reduction in communication cost.

  According to one embodiment of the present invention, power consumption required for transmitting operation information related to operation of a monitored device to a server is reduced to realize energy saving, running cost such as communication cost is reduced, and battery operation is performed. Aims to prolong battery life.

  In order to solve the above problems, a maintenance device according to one aspect of the present invention is a maintenance device that is connected to a device to be monitored and is used for maintenance of the device to be monitored. A storage unit that stores operation information regarding the operation of the device, a reduction processing unit that generates reduction data by reducing the data amount of the operation information stored by the storage unit, and the reduction processing unit that is generated by the reduction processing unit. And a communication unit that transmits the reduced data to the server via the mobile phone communication line.

  According to the above configuration, the reduction processing unit included in the security device connected to the monitored device reduces the data amount of the operation information regarding the operation of the monitored device. Therefore, when transmitting the operation information to the server, it is not necessary to provide a function for reducing the data amount of the operation information on the monitored device side.

  Therefore, when the data amount of the operation information is reduced, the maintenance device may be connected to the monitored device without providing the function of reducing the data amount of the operation information on the monitored device side. Therefore, as compared with the case where a function for reducing the data amount of the operation information is provided on the monitored device side, the cost required for providing the equipment for reducing the data amount of the operation information can be reduced. Moreover, since the data amount of the operation information is reduced before the operation information is transmitted to the server, the power required for transmitting the operation information data is reduced to realize energy saving, and communication cost is reduced. It is possible to reduce the running cost and to extend the life of the battery when it is driven by a battery.

  Further, since the reduced data generated by the reduction processing unit is transmitted to the server via the mobile phone communication line, the reduced data can be obtained without using a network owned by a user who uses the security device, for example. Can be sent to the server. Therefore, as compared with the case where the reduced data is transmitted to the server via the network owned by the user, it is possible to reduce the possibility that a malfunction occurs in the network.

  Further, since the reduced data is transmitted to the server without using the network owned by the user, it is possible to prevent the security of the network from being adversely affected. Further, the user does not like the communication by the security device to interfere with the network owned by the user from the viewpoint of privacy protection and security. Therefore, a security device that transmits the reduced data to the server via the mobile phone communication line without using the network owned by the user is desired by the user.

  A supply processing unit may be further provided that performs a process of supplying power to the communication unit only while the communication unit transmits the reduced data to the server. According to the above configuration, the power is supplied to the communication unit only while the communication unit transmits the reduced data to the server, so that the power required for the operation of the communication unit can be reduced. Further, for example, when the communication unit is a mobile phone, communication is performed in addition to transmission / reception to / from the server. Therefore, the power is supplied to the communication unit only while the communication unit transmits the reduced data to the server, so that the power required for communication other than transmission / reception to / from the server is reduced and energy saving is realized. Such running cost can be reduced, and the life of the battery can be extended when the battery is driven.

  The power supply device that supplies power to the communication unit may be further included, and the supply processing unit may supply a signal for turning on the function of the power supply device only while the communication unit transmits the reduced data to the server. You may perform the process transmitted to a supply apparatus.

  According to the above configuration, the signal for turning on the function of the power supply device is transmitted to the power supply device only while the communication unit transmits the reduced data to the server. As a result, the power required for communication other than transmission / reception to / from the server in the communication unit is reduced, energy saving is realized, running costs such as communication costs are reduced, and battery life is extended in the case of battery drive. be able to. Further, since power is lost in the power supply device, a signal for turning on the function of the power supply device is transmitted to the power supply device only while the communication unit transmits the reduced data to the server. It is possible to further reduce the power including the loss of power in

  When the operation information is stored in the storage unit by a predetermined data amount, the reduction processing unit generates the reduced data by reducing the data amount of the operation information stored in the storage unit, and the communication unit May send the reduced data generated by the reduction processing unit to the server.

  According to the above configuration, the reduction processing unit does not reduce the data amount and the communication unit does not transmit the operation information until the storage unit stores the predetermined amount of operation information. Therefore, the frequency of transmitting the reduced data generated by the reduction processing unit to the server and the amount of data to be transmitted to the server can be reduced, so that the power required to transmit the reduced data to the server can be reduced to save energy. It can be realized, running cost such as communication cost can be reduced, and battery life can be extended in the case of battery drive.

  For each predetermined cycle, the reduction processing unit generates the reduced data by reducing the data amount of the operation information, and the communication unit transmits the reduced data generated by the reduction processing unit to the server. Good.

  According to the above configuration, the reduced data generated by the reduction processing unit is transmitted to the server in a predetermined cycle, so that the frequency of transmitting the reduced data to the server and the amount of data transmitted to the server can be reduced. Therefore, it is possible to reduce electric power required for transmitting the reduced data to the server, realize energy saving, reduce running cost such as communication cost, and extend battery life in the case of battery drive. .

  The reduction processing unit generates the average value as the reduced data by calculating an average value of values related to the same type of the operation information, and if the average value is equal to or more than a predetermined threshold value, the communication is performed. The unit may transmit the reduced data generated by the reduction processing unit to the server.

  According to the above configuration, an average value of values related to the same type of operation information is generated as reduced data, and if the average value is equal to or more than a predetermined threshold value, the reduced data is transmitted to the server. Therefore, since the reduced data is transmitted to the server only when the average value deviates from the predetermined threshold, the frequency of transmitting the reduced data to the server and the amount of data transmitted to the server can be reduced. Therefore, it is possible to reduce electric power required for transmitting the reduced data to the server, realize energy saving, reduce running cost such as communication cost, and extend battery life in the case of battery drive. .

  The reduction processing unit may change the reduction criterion by referring to a reduction criterion changing instruction included in the received data received from the server by the communication unit and indicating a criterion for generating the reduced data. Good. According to the above configuration, the reduction criterion can be updated based on the reduction criterion change instruction included in the received data received from the server. Therefore, it is possible to reduce the data amount of the operation information of the monitored device based on the latest reduction standard.

  A process of changing the setting value is performed by transmitting an instruction to change the setting value indicating the operating condition of the monitoring target device, which is included in the reception data received from the server by the communication unit, to the monitoring target device. A change processing unit may be further included. According to the above configuration, it is possible to update the setting value by transmitting to the monitoring target device an instruction to change the setting value indicating the operating condition of the monitoring target device, which is included in the reception data received from the server. Therefore, the monitored device can operate based on the latest set value.

  The supply processing unit maintains power supply to the communication unit for a predetermined time after the reduced data is transmitted to the server by the communication unit, and the reduced data is transmitted to the server by the communication unit. The power supply to the communication unit may be stopped after the predetermined time has elapsed. According to the above configuration, since the power supply to the communication unit is maintained for a predetermined time after the reduced data is transmitted to the server, when the server transmits the data to the communication unit within the predetermined time, the communication unit Can receive data received from the server.

  The monitored device may be a device mounted on a mobile body. According to the above configuration, the maintenance device can be connected to the monitoring target device which is a device mounted on the mobile body.

  A maintenance system according to an aspect of the present invention displays error information indicating that an error has occurred in the maintenance device unless the reduced data from the maintenance device and the reduction processing unit is received for a predetermined elapsed time. The server which performs processing may be provided. According to the above configuration, when an error occurs in the security device, the server displays the error information, so that the user can recognize that the security device has an error.

  According to one embodiment of the present invention, power consumption required for transmitting operation information related to the operation of a monitored device to a server is reduced to achieve energy saving, running cost such as communication cost is reduced, and battery-powered operation is performed. In some cases, the battery life can be extended.

It is a block diagram showing composition of a maintenance device concerning Embodiment 1 of the present invention. It is a block diagram which shows the structure of the maintenance system provided with the maintenance apparatus shown in FIG. It is a figure which shows the waveform of the drive signal supplied to a communication part and the drive signal supplied to a converter. It is a flow chart which shows an example of operation of a monitored device. It is a flow chart which shows an example of operation of a maintenance device. It is a flow chart which shows an example of processing of a reduction processing part.

[Embodiment 1]
(Configuration of the maintenance device 100)
FIG. 1 is a block diagram showing the configuration of a maintenance device 100 according to the first embodiment of the present invention. FIG. 2 is a block diagram showing a configuration of a maintenance system S1 including the maintenance device 100. As shown in FIG. 1, the maintenance device 100 includes a storage unit 10, a processing unit 20, a communication unit 30, and a DCDC converter 40 (power supply device). As shown in FIG. 2, the maintenance device 100 is a small device that is connected to the monitoring target device 400 via the port 300 and is used for maintenance of the monitoring target device 400. The maintenance device 100 is externally attached to the monitored device 400.

  As shown in FIG. 2, the maintenance system S1 includes a maintenance device 100, a server 200, a port 300, a monitored device 400, and a terminal 500. The storage unit 10 is, for example, a buffer for temporarily storing data. The storage unit 10 is connected to the port 300 and the processing unit 20. The storage unit 10 stores the operation information regarding the operation of the monitored device 400 from the monitored device 400 via the port 300.

  The processing unit 20 performs processing using the operation information stored in the storage unit 10 from the monitored device 400 via the port 300. The processing unit 20 includes an acquisition processing unit 205, a reduction processing unit 210, a storage processing unit 215, a supply processing unit 220, a change processing unit 225, a comparison unit 230, and a measurement unit 235. The processing unit 20 is electrically connected to the storage unit 10, the communication unit 30, the DCDC converter 40, and the power supply 50.

  The acquisition processing unit 205 acquires the operation information stored in the storage unit 10 from the storage unit 10. The acquisition processing unit 205 supplies the acquired operation information to the reduction processing unit 210. The operation information may be, for example, information on parts around a portion of the monitoring target device 400 where a failure is likely to occur, ON / OFF information of a motor or a heater, a current value, a temperature, or the like. . Further, the operation information may be, for example, information indicating whether or not an error has occurred during reading or writing of HD (Hard Disk) or SSD (Solid State Drive).

  The reduction processing unit 210 generates reduced data by reducing the data amount of the operation information supplied from the acquisition processing unit 205. Specifically, for example, the reduction processing unit 210 may generate the average value as the reduced data by calculating an average value of values related to the same type of information among the operation information. At this time, the reduction processing unit 210 supplies the average value to the comparison unit 230.

  The information of the same type means, for example, when a plurality of ON / OFF information of the motor included in the monitored device 400 is stored in the storage unit 10 as time passes, the ON / OFF of the motor stored in the storage unit 10 is stored. It is a plurality of pieces of information of OFF. That is, the same type of information is a plurality of pieces of information related to the same parameter stored in the storage unit 10 as time passes.

  Further, the reduction processing unit 210 deletes data other than the data used by the server 200 to maintain the monitored device 400 from the operation information, thereby reducing the data amount of the operation information and generating reduced data. You may. The reduction processing unit 210 supplies the generated reduction data to the communication unit 30. The reduction processing unit 210 instructs the supply processing unit 220 to perform a process of supplying power to the communication unit 30 before supplying the reduced data to the communication unit 30.

  When the operation information supplied from the acquisition processing unit 205 indicates an error, the reduction processing unit 210 supplies the operation information indicating the error to the communication unit 30. At this time, the reduction processing unit 210 instructs the supply processing unit 220 to perform a process of supplying power to the communication unit 30 before supplying the operation information to the communication unit 30. If the operation information indicates an error, the monitored device 400 may be in a state in which it is determined that an error has occurred in itself, and the acquisition processing unit 205 determines that the operation information is an error. It may be in a state of being judged.

  The reduction processing unit 210 refers to the reduction criterion change instruction, which is included in the received data received from the communication unit 305 of the server 200 by the communication unit 30 and indicates the criterion for generating the reduced data, thereby reducing the reduction criterion. change. Specifically, the reduction processing unit 210 is supplied with the reception data received from the server 200 by the communication unit 30 from the communication unit 30. Since the received data includes an instruction to change the reduction criterion, the reduction processing unit 210 changes the reduction criterion. Examples of the reduction criterion include the number of values related to the same type of information that are summed when the average value is calculated, the range of information to be deleted from the operation information, and the like.

  With such a configuration of the reduction processing unit 210, the reduction criterion can be updated based on the reduction criterion change instruction included in the reception data received from the server 200. Therefore, the data amount of the operation information of the monitored device 400 can be reduced based on the latest reduction standard.

  The storage processing unit 215 performs a process of storing data in the storage unit 10 and a process of deleting data stored in the storage unit 10. The supply processing unit 220 performs a process of supplying power to the communication unit 30 only while the communication unit 30 transmits the reduced data to the communication unit 305 of the server 200. Specifically, when the reduction processing unit 210 instructs the supply processing unit 220 to perform a process of supplying power to the communication unit 30, the supply processing unit 220 is a drive signal DC that is a signal that turns on the function of the DCDC converter 40. Is supplied to the DCDC converter 40. When the drive signal DC is supplied to the DCDC converter 40, the DCDC converter 40 is activated, and the power from the power supply 50 is supplied to the communication unit 30 via the DCDC converter 40.

  After the power from the power supply 50 is supplied to the communication unit 30, the supply processing unit 220 supplies the drive signal GL to the communication unit 30. When the drive signal GL is supplied to the communication unit 30, the communication unit 30 is activated. When the reduction processing unit 210 instructs the supply processing unit 220 to perform a process of stopping the power supply to the communication unit 30, the supply processing unit 220 supplies the drive signal DC to the DCDC converter 40 and the communication unit 30. The supply of the drive signal GL is stopped.

  When the supply of the drive signal DC to the DCDC converter 40 is stopped, the DCDC converter 40 is stopped and the power from the power supply 50 is not supplied to the communication unit 30 via the DCDC converter 40. That is, the supply processing unit 220 transmits the drive signal DC, which is a signal for turning on the function of the DCDC converter 40, to the DCDC converter 40 only while the communication unit 30 transmits the reduced data to the communication unit 305 of the server 200. I do. As described above, since the power is supplied to the communication unit 30 only while the communication unit 30 transmits the reduced data to the server 200, the power required for the operation of the communication unit 30 can be reduced. At the same time, when the DCDC converter 40 is not activated, the power consumed inside the DCDC converter 40 also decreases. Thereby, power consumption can be further reduced. Therefore, if the power source 50 is a battery, the life of the battery can be extended.

  In addition, for example, when the communication unit 30 is a mobile phone, communication is performed in addition to transmission / reception to / from the server 200. For this reason, power is supplied to the communication unit 30 only while the communication unit 30 transmits the reduced data to the server 200, so that power required for communication other than transmission / reception to / from the server 200 is reduced and energy saving is realized. However, running costs such as communication costs can be reduced, and the life of the battery can be extended when the device is driven by a battery. The communication other than transmission / reception to / from the server 200 is, for example, a mobile phone such as periodically communicating the mobile phone's phone number or the like to the nearest base station in a standby state of the mobile phone to obtain position information. There is communication because of this. If the security device 100 does not move, such communication becomes useless communication.

  Furthermore, in the DCDC conversion (DC voltage conversion) performed by the DCDC converter 40, power loss occurs. Therefore, the drive signal DC is transmitted to the DCDC converter 40 only while the communication unit 30 transmits the reduced data to the server 200, thereby further reducing the power including the loss of the power in the DCDC converter 40. You can

  As shown in FIG. 3, the supply processing unit 220 starts supplying the drive signal GL to the communication unit 30 and then starts supplying the drive signal DC to the DCDC converter 40, and the output of the DCDC converter 40 is The supply of the drive signal GL to the communication unit 30 may be stopped after stabilization. FIG. 3 is a diagram showing waveforms of the drive signal GL supplied to the communication unit 30 and the drive signal DC supplied to the DCDC converter 40. In FIG. 3, T is time, P1 is a period until the output of the DCDC converter 40 is stable, and P2 is a period during which the communication unit 30 and the server 200 are communicating. Further, the supply processing unit 220 may control the transmission of the drive signal to one of the communication unit 30 and the DCDC converter 40.

  The change processing unit 225 transmits to the monitoring target device 400 an instruction to change the setting value indicating the operating condition of the monitoring target device 400, which is included in the reception data received by the communication unit 30 from the communication unit 305 of the server 200. , Processing for changing the set value is performed. Specifically, when the change processing unit 225 is supplied from the communication unit 30 with the received data received from the server 200 by the communication unit 30, the change processing unit 225 transmits the received data to the monitoring target device 400 via the port 300. Since the received data includes the instruction to change the setting value, the setting value is changed in the monitoring target device 400. Examples of the set value include ON / OFF timing of a motor or a heater, a current value, a temperature, and the like.

  With such a configuration of the change processing unit 225, by transmitting to the monitoring target device 400 a setting value change instruction included in the reception data received from the server 200 and indicating the operating condition of the monitoring target device 400, the setting is performed. The value can be updated. Therefore, the monitoring target device 400 can operate based on the latest setting value.

  The comparison unit 230 performs a process of comparing the absolute value of the average value supplied from the reduction processing unit 210 with a predetermined threshold value. When the absolute value of the average value is equal to or larger than the predetermined threshold value, the comparison unit 230 instructs the reduction processing unit 210 to supply the reduced data as the average value to the communication unit 30. When the comparison unit 230 is instructed to supply the reduced data to the communication unit 30, the reduction processing unit 210 supplies the reduced data to the communication unit 30. The communication unit 30 transmits the reduced data supplied from the reduction processing unit 210 to the communication unit 305 of the server 200.

  Therefore, if the average value is equal to or larger than the predetermined threshold value, the communication unit 30 transmits the reduced data generated by the reduction processing unit 210 to the server 200. As a result, an average value of values related to the same type of information of the operation information is generated as reduced data, and if the average value is equal to or larger than a predetermined threshold, the reduced data is transmitted to the server 200. Note that the communication unit 30 may transmit the reduced data generated by the reduction processing unit 210 to the server 200 if the absolute value of the average value is equal to or larger than a predetermined threshold value.

  Therefore, since the reduced data is transmitted to the server 200 only when the average value largely deviates from the predetermined threshold, the frequency of transmitting the reduced data to the server 200 and the amount of data transmitted to the server 200 can be reduced. . Therefore, it is possible to reduce the electric power required for transmitting the reduced data to the server 200 to realize energy saving, reduce the running cost such as communication cost, and prolong the battery life in the case of battery driving. You can

  The reduction processing unit 210 may transmit a value obtained by subtracting a predetermined threshold value from the absolute value of the average value to the server 200 as reduced data. Further, the processing of step 43 and step 44 described later may be performed. The predetermined threshold may be, for example, a value calculated by a moving average for every n pieces of data of the motion information. n is a natural number and is a settable value.

  The communication unit 30 transmits the reduced data generated by the reduction processing unit 210 to the server 200 via the mobile phone communication line CL. The communication unit 30 may be, for example, a mobile phone or a communication chip capable of communicating with the server 200 via the mobile phone communication line CL, but can communicate with the server 200 via the mobile phone communication line CL. If it is a thing, it will not be specifically limited. The mobile phone communication line CL is a line capable of data communication such as a 3G line and a 4G line. The DCDC converter 40 is a power supply device that performs DCDC conversion and supplies power to the communication unit 30. The DCDC converter 40 is electrically connected to the processing unit 20, the communication unit 30, and the power supply 50.

  The power source 50 may be, for example, a battery attached to the outside of the security device 100. By attaching the power supply 50 to the outside of the security device 100, power is supplied from the power supply 50 to the processing unit 20 and the DCDC converter 40. Instead of attaching the power supply 50 to the outside of the maintenance device 100, power may be supplied from the external power supply to the processing unit 20 and the DCDC converter 40 via the port 300. In addition, electric power may be supplied to the processing unit 20 and the DCDC converter 40 from the external power supply without passing through the port 300.

  As described above, in the maintenance device 100, the reduction processing unit 210 included in the maintenance device 100 connected to the monitored device 400 reduces the data amount of the operation information regarding the operation of the monitored device 400. Therefore, when transmitting the operation information to the server 200, it is not necessary to provide a function for reducing the data amount of the operation information on the monitored device 400 side.

  Therefore, when reducing the data amount of the operation information, the maintenance device 100 may be connected to the monitoring target device 400 without providing the function of reducing the data amount of the operation information on the monitoring target device 400 side. Therefore, as compared with a case where a function for reducing the data amount of the operation information is provided on the monitored device 400 side, it is possible to reduce the cost required to provide the facility for reducing the data amount of the operation information. Further, since the data amount of the operation information is reduced before the operation information is transmitted to the server 200, the power required for transmitting the operation information data is reduced to realize energy saving and communication. Running costs such as costs can be reduced, and the life of the battery can be extended when it is driven by a battery.

  Further, since the reduced data generated by the reduction processing unit 210 is transmitted to the server 200 via the mobile phone communication line CL, for example, without using the network owned by the user who uses the security device 100, The reduced data can be transmitted to the server 200. Therefore, as compared with the case where the reduced data is transmitted to the server 200 via the network owned by the user, it is possible to reduce the possibility that a malfunction occurs in the network.

  Further, since the reduced data is transmitted to the server 200 without using the network owned by the user, it is possible to prevent the security of the network from being adversely affected. When the network for communication to the server 200 is shared with the network owned by the user, when a failure occurs in any of these networks, it is difficult to identify which network is the failure. The problem arises. In addition, if a problem occurs in any of these networks, there is also a problem that both systems of these networks are stopped at the same time.

  Further, the user does not like the communication by the security device 100 to interfere with the network owned by the user, from the viewpoint of privacy protection and security. Therefore, the security device 100 that transmits the reduced data to the server 200 via the mobile phone communication line CL without using the network owned by the user is desired by the user.

  The server 200 includes a communication unit 305, a display processing unit 310, and a measuring unit 315. The server 200 may be, for example, a cloud server provided on a WAN (Wide Area Network) and providing a cloud service, but is not limited to this. The server 200 is connected to the communication unit 30 of the security device 100 via the mobile phone communication line CL, and connected to the terminal 500 via the Internet line or the like. That is, the communication unit 305 is connected to the communication unit 30 and the terminal 500.

  If the server 200 does not receive the reduced data from the reduction processing unit 210 for a predetermined elapsed time, the server 200 may perform a process of displaying error information indicating that an error has occurred in the security device 100. Specifically, if the communication unit 305 does not receive the reduced data from the communication unit 30 for a predetermined elapsed time, the display processing unit 310 is instructed to perform the process of displaying the error information. The measurement unit 315 determines whether or not the predetermined elapsed time has elapsed.

  When the communication processing unit 305 instructs the display processing unit 310 to perform the process of displaying the error information, the display processing unit 310 performs the process of displaying the error information on a display screen (not shown) of the terminal 500. Accordingly, when an error occurs in the security device 100, the server 200 performs a process of displaying error information, so that the user can recognize that the security device 100 has an error.

  Examples of the error that occurs in the maintenance device 100 include a failure of the maintenance device 100, a disconnection of the maintenance device 100 from the monitoring target device 400, and the like. Note that the server 200 may be provided with a user interface such as an API (Application Programming Interface) in order to make the contents of the reduced data from the reduction processing unit 210 easy to understand.

  The port 300 is, for example, SIO (Serial Input and Output), CAN (registered trademark) (Controller Area Network), USB (registered trademark) (Universal Serial Bus), Bluetooth (registered trademark), Zigbee (registered trademark), or the like. May be. The port 300 is for the monitoring target device 400 and the maintenance device 100 to communicate with each other.

  The monitored device 400 is protected by using the security device 100 and the server 200. Specifically, the reduced data generated by reducing the operation information regarding the operation of the monitored device 400 is transmitted to the server 200 via the security device 100. The manufacturer of the monitored device 400 may refer to the reduced data transmitted to the server 200.

  After the manufacturer refers to the reduced data, the manufacturer proposes repair of the monitored device 400 to the terminal 500 via the server 200, a graph showing deterioration over time of the monitored device 400, and the monitored device 400. A warning or the like indicating that the time for replacement is imminent may be displayed.

  Further, the server 200 aggregates the reduced data supplied from the maintenance device 100, and displays the difference between the value of the aggregation result and the threshold value relating to the replacement time of the monitored device 400, on the display screen (not shown) of the terminal 500. ) May be displayed. The monitored device 400 may be a device mounted on a moving body such as an automobile such as a truck. That is, the maintenance device 100 may be attached to the moving body. In this case, CAN is adopted as the port 300.

  In this way, when the security device 100 moves (when the security device 100 is mounted on a truck or the like), the power supply to the communication unit 30 is normally cut off and the power is supplied to the communication unit 30 at the time of transmission. It takes some time to detect the position of the maintenance device 100 when starting the power supply of the device. However, there is no need for responsiveness to transmit such security information as in a normal mobile phone, and no problem occurs.

(Operation of monitored device 400)
FIG. 4 is a flowchart showing an example of the operation of the monitored device 400. As shown in FIG. 4, when the device to be monitored 400 starts maintenance (YES in step S10), the device to be monitored 400 performs maintenance processing (step S15). When the maintenance process is completed (YES in step S16), the monitored device 400 moves to the process in step S12. When the maintenance process is not completed (NO in step S16), the monitoring target device 400 continues the maintenance process.

  If the monitored device 400 does not start maintenance (NO in step S10), the monitored device 400 operates (step S11). That is, the monitoring target device 400 performs an original process that is not the maintenance process. When the monitoring target device 400 operates, the monitoring target device 400 determines whether or not t ≧ Tc (step S12). t is a time of a timer included in the monitored device 400, and Tc is a cycle of transmitting the operation information to the maintenance device 100.

  When t <Tc (NO in step S12), in the monitored device 400, it is determined whether or not the timer has been interrupted by the CPU (Central Processing Unit) included in the monitored device 400 ( Step S17). When the CPU interrupts the timer (YES in step S17), the time t of the timer increases by 1 (step S18), and the monitored device 400 returns to the process of step S10. When the CPU does not interrupt the timer (NO in step S17), the monitored device 400 returns to the process of step S10.

  If t ≧ Tc (YES in step S12), the monitored device 400 outputs operation information regarding the operation of the monitored device 400 to the port 300 (step S13). After the operation information is output to the port 300, the time t of the timer is set to 0 (step S14). After the time t of the timer is set to 0, the monitored device 400 returns to the process of step S10.

(Operation of the maintenance device 100)
FIG. 5 is a flowchart showing an example of the operation of the maintenance device 100. As shown in FIG. 5, in the maintenance device 100, the supply processing unit 220 first stops the power supply to the communication unit 30 (step S20). As a result, the communication unit 30 stops. After the communication unit 30 stops, the security device 100 determines whether or not the operation information regarding the operation of the monitored device 400 is received from the port 300 (step S21).

  When the security device 100 receives the operation information from the port 300 (YES in step S21), the security device 100 stores the operation information in the storage unit 10 (step S22). When the security device 100 has not received the operation information from the port 300 (NO in step S21), the security device 100 waits until it receives the operation information from the port 300.

  After the operation information is stored in the storage unit 10, the reduction processing unit 210 performs processing (step S23). The processing of the reduction processing unit 210 will be described based on FIG. FIG. 6 is a flowchart showing an example of processing of the reduction processing unit 210. As shown in FIG. 6, the reduction processing section 210 determines whether or not the operation information indicates an error (step S40).

  When the operation information indicates an error (YES in step S40), the reduction processing unit 210 supplies the operation information indicating the error to the communication unit 30 (step S46). After the operation information indicating the error is supplied to the communication unit 30, the security device 100 returns to the process of step S20. Then, the communication unit 30 transmits the operation information indicating the error, which is supplied from the reduction processing unit 210, to the server 200. Thus, when an error occurs in the monitored device 400, the operation information indicating the error can be immediately transmitted to the server 200 without reducing the operation information. Therefore, the user can quickly recognize that an error has occurred in the monitored device 400.

  When the operation information does not indicate an error (NO in step S40), the comparison unit 230 determines whether the operation information stored in the storage unit 10 has reached the predetermined data amount (step S40). Step S41). When the motion information stored in the storage unit 10 reaches the predetermined data amount (YES in step S41), the reduction processing unit 210 calculates the average value of the values of the same type of motion information. Calculate (step S42). When the operation information stored in the storage unit 10 has not reached the predetermined data amount (NO in step S41), the maintenance device 100 returns to the process of step S20.

  After calculating the average value, the reduction processing unit 210 calculates the difference between the average value previously transmitted to the server 200 and the average value calculated this time (step S43). At this time, the reduction processing unit 210 refers to the average value transmitted from the server 200 to the server 200 last time via the communication unit 30. The reduction processing unit 210 supplies the difference to the comparison unit 230. The comparison unit 230 compares the absolute value of the difference supplied from the reduction processing unit 210 with a prescribed threshold value. That is, the comparison unit 230 determines whether or not the absolute value of the difference is equal to or greater than the specified threshold (step S44).

  When the absolute value of the difference is equal to or larger than the specified threshold value (YES in step S44), the reduction processing unit 210 supplies the average value calculated this time to the communication unit 30 as reduction data (step S45). After the processing of step S45, the maintenance device 100 moves to the processing of step S24. If the absolute value of the difference is less than the specified threshold value (NO in step S44), the maintenance device 100 returns to the process of step S20.

  Returning to FIG. 5, in the process of step S24, the storage processing unit 215 deletes the operation information stored in the storage unit 10 (step S24). After the operation information stored in the storage unit 10 is deleted, the supply processing unit 220 performs a process of starting power supply to the communication unit 30 (step S25). After the power supply to the communication unit 30 is started, the security device 100 waits until the communication unit 30 is activated (step S26).

  When the communication unit 30 is activated, the communication unit 30 transmits the operation information indicating the error or the reduced data to the server 200 via the mobile phone communication line CL (step S27). After the communication unit 30 transmits the operation information indicating the error or the reduced data to the server 200, the security device 100 waits until it receives the received data from the server 200 (step S28).

  Further, the security device 100 determines whether or not the received data is received from the server 200 (step S29). When the communication unit 30 receives the received data from the server 200 (YES in step S29), the process is performed based on the received data from the server 200 (step S31). Specifically, the reduction processing unit 210 changes the reduction criterion, or the change processing unit 225 changes the setting value of the monitored device 400. After the processing of step S31, the maintenance device 100 returns to the processing of step S20.

  When the communication unit 30 has not received the reception data from the server 200 (NO in step S29), the measurement unit 235 determines whether a predetermined time has elapsed (step S30). If the predetermined time has elapsed (YES in step S30), the maintenance device 100 returns to the process of step S20. When the predetermined time has not elapsed (NO in step S30), the measuring unit 235 waits until the predetermined time elapses.

  As described above, in the maintenance device 100, when the operation information is stored in the storage unit 10 by a predetermined data amount, the reduction processing unit 210 reduces the data amount of the operation information stored in the storage unit 10 to reduce the operation information. Data is generated, and the communication unit 30 transmits the reduced data generated by the reduction processing unit 210 to the server 200.

  As a result, the reduction processing unit 210 does not reduce the data amount and the communication unit 30 does not transmit the operation information until the operation information is stored in the storage unit 10 by a predetermined data amount. Therefore, since the frequency of transmitting the reduced data generated by the reduction processing unit 210 to the server 200 and the amount of data to be transmitted to the server 200 can be reduced, the power required to transmit the reduced data to the server 200 can be reduced. Energy saving can be realized, running costs such as communication costs can be reduced, and the life of the battery can be extended in the case of battery drive.

  Further, the supply processing unit 220 maintains the power supply to the communication unit 30 for a predetermined time after the reduction data is transmitted to the server 200 by the communication unit 30, and the communication unit 30 transmits the reduction data to the server 200. The power supply to the communication unit 30 is stopped after a predetermined time has passed from the transmission. Accordingly, the power supply to the communication unit 30 is maintained for a predetermined time after the reduced data is transmitted to the server 200. Therefore, when the server 200 transmits the data to the communication unit 30 within the predetermined time, the communication is performed. The unit 30 can receive the received data from the server 200.

[Embodiment 2]
Another embodiment of the present invention will be described below. For convenience of description, members having the same functions as the members described in the above embodiment are designated by the same reference numerals, and the description thereof will not be repeated.

  The measurement unit 235 may transmit the periodic signal to the reduction processing unit 210 at every predetermined period. When the reduction processing unit 210 receives the periodic signal from the measurement unit 235, the reduction processing unit 210 reduces the data amount of the operation information regarding the operation of the monitoring target device 400 to generate reduced data. The reduction processing unit 210 supplies the generated reduction data to the communication unit 30. The communication unit 30 transmits the reduced data supplied from the reduction processing unit 210 to the communication unit 305 of the server 200.

  As described above, the reduction processing unit 210 generates the reduced data by reducing the data amount of the operation information for each predetermined cycle, and the communication unit 30 transfers the reduced data generated by the reduction processing unit 210 to the server 200. Send. As a result, the reduced data generated by the reduction processing unit 210 is transmitted to the server 200 in a predetermined cycle, so that the frequency of transmitting the reduced data to the server 200 and the amount of data transmitted to the server 200 can be reduced. Therefore, it is possible to reduce the power required for transmitting the reduced data to the server 200 to realize energy saving, reduce the running cost such as communication cost, and extend the battery life in the case of battery drive. it can.

[Example of software implementation]
The control block (especially the processing unit 20) of the maintenance device 100 may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like, or may be realized by software.

  In the latter case, the security device 100 includes a computer that executes the instructions of a program that is software that realizes each function. The computer includes, for example, one or more processors and a computer-readable recording medium that stores the program. Then, in the computer, the processor reads the program from the recording medium and executes the program to achieve the object of the present invention. A CPU, for example, can be used as the processor. As the recording medium, a "non-transitory tangible medium" such as a ROM (Read Only Memory), a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. Further, a RAM (Random Access Memory) for expanding the program may be further provided. The program may be supplied to the computer via any transmission medium (communication network, broadcast wave, etc.) capable of transmitting the program. Note that one aspect of the present invention can also be realized in the form of a data signal embedded in a carrier wave, in which the program is embodied by electronic transmission.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention.

10 storage unit 30 communication unit 40 DCDC converter (power supply device)
100 maintenance device 200 server 210 reduction processing unit 220 supply processing unit 225 change processing unit 400 monitored device S1 maintenance system

Claims (11)

A maintenance device that is connected to a monitored device and is used for maintenance of the monitored device,
A storage unit that stores operation information regarding the operation of the monitored device from the monitored device;
A reduction processing unit that generates reduced data by reducing the data amount of the motion information stored by the storage unit;
A security unit, comprising: a communication unit that transmits the reduced data generated by the reduction processing unit to a server via a mobile phone communication line.   The security device according to claim 1, further comprising a supply processing unit that performs a process of supplying electric power to the communication unit only while the communication unit transmits the reduced data to the server. Further comprising a power supply device for supplying power to the communication unit,
The supply processing unit performs a process of transmitting a signal for turning on a function of the power supply device to the power supply device only while the communication unit transmits the reduced data to the server. The maintenance device according to 2.   When the operation information is stored in the storage unit by a predetermined data amount, the reduction processing unit generates the reduced data by reducing the data amount of the operation information stored in the storage unit, and the communication unit The security device according to any one of claims 1 to 3, wherein the reduced data generated by the reduction processing unit is transmitted to the server.   The reduction processing unit generates the reduction data by reducing the data amount of the operation information, and the communication unit transmits the reduction data generated by the reduction processing unit to the server at predetermined intervals. The maintenance device according to any one of claims 1 to 3, characterized in that: The reduction processing unit generates an average value as the reduced data by calculating an average value of values related to the same type of information among the operation information,
The communication unit transmits the reduced data generated by the reduction processing unit to the server if the average value is equal to or larger than a predetermined threshold value. Security device.   The reduction processing unit may change the reduction criterion by referring to a reduction criterion change instruction included in the received data received from the server by the communication unit and indicating a criterion for generating the reduced data. 7. The security device according to claim 1, wherein the security device is a security device.   A process of changing the setting value is performed by transmitting an instruction to change the setting value indicating the operating condition of the monitoring target device, which is included in the reception data received from the server by the communication unit, to the monitoring target device. The maintenance device according to claim 1, further comprising a change processing unit.   The supply processing unit maintains power supply to the communication unit for a predetermined time after the reduced data is transmitted to the server by the communication unit, and the reduced data is transmitted to the server by the communication unit. 4. The maintenance device according to claim 2, wherein the power supply to the communication unit is stopped after the predetermined time has elapsed.   The maintenance device according to any one of claims 1 to 9, wherein the monitored device is a device mounted on a mobile body. The maintenance device according to any one of claims 1 to 10,
A security system comprising: a server that performs a process of displaying error information indicating that an error has occurred in the security device unless the reduced data from the reduction processing unit is received for a predetermined elapsed time. .

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