JP2018173824A - Terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of sampling data to be stored while acquiring necessary data.SOLUTION: A terminal device (100) includes: a first sampling unit (109) for acquiring a statistical value obtained by statistical processing for each first sampling cycle as first sampling data; a second sampling unit (113) for acquiring a statistical value obtained by statistical processing for each second sampling cycle longer than the first sampling cycle as second sampling data; a statistical processing setting unit (107) capable of setting one or a plurality of types of statistical values to be acquired in the statistical processing; and a statistical processing switching unit (108) capable of individually switching a setting of the statistical processing setting unit (107) between the first sampling unit (109) and the second sampling unit (113), and the first sampling unit (109) and the second sampling unit (113) acquire a first or second sampling data according to the setting of the statistical processing setting unit (107).SELECTED DRAWING: Figure 2

Description

  The present invention relates to a terminal device that samples data from a sensor attached to a monitoring target.

  For example, in Japanese Patent No. 5591869 (Patent Document 1), as a terminal device of this type, all data acquired from a sensor is not stored and transmitted, but is acquired for each predetermined sampling period during each period. Statistical processing is performed on the obtained sensor data, and at least one of the maximum value, the minimum value, and the average value is acquired and stored, and this is transmitted to the management server side, thereby reducing the data storage amount on the terminal device side. What has been reduced to save memory capacity is described.

Japanese Patent No. 5591869

  However, depending on the type of monitoring target (various devices, temperature measurement points, etc.), fluctuations that are shorter than the sampling period may occur. If the average value is acquired as statistical processing, the fluctuations may be overlooked. In this case, it is necessary to acquire the maximum value or the minimum value according to the type of variation (see FIG. 7). Therefore, in order not to miss such fluctuations in the monitoring target, all of the average value, the maximum value, and the minimum value are acquired as statistical values, and as a result, the memory capacity is used accordingly. Become.

  Further, what kind of fluctuation can occur in the data is determined to some extent depending on the type of the monitoring target, such as the data value jumping instantaneously, the data value dropping sharply, or the fluctuation of data shorter than the sampling period does not occur. Therefore, the statistical values to be acquired for each monitoring target are different, and if all of the average value, maximum value, and minimum value are always acquired, unnecessary statistical values are included for each monitoring target, and the memory capacity It will be useless.

  Therefore, it is desired to realize a terminal device that can effectively reduce the number of sampling data to be stored while acquiring necessary data.

The terminal device according to the present invention is
A terminal device that samples data from a sensor attached to a monitoring target,
A processing data sampling unit that samples data from the sensor as processing data at a predetermined processing sampling period;
For each first sampling period longer than the processing sampling period, statistical processing is performed based on the processing data sampled during each first sampling period, and a statistical value obtained by the statistical processing is converted into first sampling data. A first sampling unit obtained as
For each second sampling period longer than the first sampling period, statistical processing is performed based on the processing data sampled during each second sampling period, and a statistical value obtained by the statistical processing is obtained as second sampling data. A second sampling unit obtained as
In the statistical processing in the first sampling unit and the second sampling unit, a statistical processing setting unit capable of setting one or a plurality of types of statistical values to be acquired as the first or second sampling data;
A statistical processing switching unit capable of individually switching the setting of the statistical processing setting unit between the first sampling unit and the second sampling unit;
The first sampling unit and the second sampling unit acquire the first or second sampling data according to the setting of the statistical processing setting unit.

  According to this configuration, since the two sampling units having different sampling periods are provided, the first sampling is performed for data fluctuations shorter than the second sampling period while capturing large fluctuations in the sensor data by the second sampling part having a longer period. It can be obtained by the department. In addition, since the number and type of statistical values obtained by each sampling unit can be set separately by the statistical processing switching unit, appropriate statistical values can be selected and set for two different periods according to the type of monitoring target. Thereby, it is possible to effectively reduce the number of sampling data to be stored while acquiring necessary data.

  Hereinafter, preferred embodiments of the terminal device according to the present invention will be described. However, the scope of the present invention is not limited by the preferred embodiments described below.

  As one aspect, it is preferable that the statistical processing setting unit can change at least the first sampling period in the first sampling unit.

  According to this configuration, since the number of statistical values of the first sampling unit having a short sampling period can be set arbitrarily, it is possible to effectively reduce the number of sampling data to be stored while acquiring data suitable for the monitoring target.

  As one aspect, it is preferable that the second sampling unit performs statistical processing using the first sampling data sampled during each second sampling period.

  According to this configuration, the number of data processed in each cycle by the second sampling unit can be reduced.

  As one aspect, when a predetermined transmission condition is satisfied, a communication unit capable of communicating with the monitoring device, a first storage unit that stores the first sampling data acquired by the first sampling unit in an accumulative manner, and Only the first transmission control unit that causes the communication unit to transmit at least a part of the first sampling data stored in the first storage unit to the monitoring device, and the first acquired by the second sampling unit. Stored in the second storage unit in the communication unit and the second storage unit that stores the sampling data in an accumulative manner regularly or when the communication unit receives a predetermined data request signal It is preferable to include a second transmission control unit that transmits at least a part of the second sampling data to the monitoring device.

  According to this configuration, the second sampling data having the long cycle is transmitted to the monitoring device to monitor the monitoring target, and the first sampling data having a more detailed short cycle is transmitted to the monitoring device when necessary. Since necessary data is transmitted only at a certain time, the monitoring target can be monitored in a suitable form.

  As one aspect, an event signal acquisition unit that acquires an event signal indicating that a predetermined event has occurred in the monitoring target, and when the event signal acquisition unit acquires the event signal, the event signal is stored in the first storage unit A transmission data storage unit that acquires and stores the first sampling data in a range corresponding to the event signal among the first sampling data that has been received, and the first transmission control unit includes the transmission condition When the above is satisfied, it is preferable to cause the communication unit to transmit the first sampling data stored in the transmission data storage unit to the monitoring device.

  Short cycle sampling data is required when an event such as a failure or operation occurs. According to this configuration, when a signal indicating that the event has occurred is acquired, Since the corresponding first sampling data is stored, the first sampling data transmitted to the monitoring device can be made appropriate.

  As one aspect, a data storage range setting unit that stores data storage range information in which the range of the first sampling data to be stored by the transmission data storage unit is stored for each type of the event signal; Based on the data storage range information, the data storage unit stores the range of the first sampling data to be stored by the transmission data storage unit according to the type of the event signal acquired by the event signal acquisition unit. And a data storage control unit.

  For example, what is required as data at the start of operation is data in a range of a predetermined period after the start of operation, and what is required as data at the end of operation is data in a range of a predetermined period before the end of operation, etc. The range of data to be stored by the transmission data storage unit varies depending on the type of signal. On the other hand, according to this configuration, the data storage control unit can cause the transmission data storage unit to store the first sampling data in an appropriate range according to the type of the event signal based on the data storage range information. .

  As one aspect, an event data acquisition unit that acquires event data indicating that a predetermined event has occurred in the monitoring target, and the event data when the event data acquisition unit continuously acquires the event data for a predetermined time It is preferable to include an event signal generation unit that generates a signal.

  According to this configuration, since the event signal is generated for the first time when the event data is continuously acquired for a predetermined time, it is possible to suppress the generation of the event signal by mistake.

  As one aspect, it is preferable that the first transmission control unit determines that the transmission condition is satisfied when the transmission data storage unit newly stores the first sampling data.

  According to this configuration, when the event signal is acquired and the data for transmission is stored, the data stored in the monitoring device is transmitted immediately. You can get it.

  As one aspect, it is preferable that the first transmission control unit determines that the transmission condition is satisfied when the communication unit receives a predetermined data request signal.

  According to this configuration, since data is transmitted in response to a request from the monitoring device side, the data can be acquired when necessary.

  As one aspect, statistical processing is performed for each third sampling period longer than the second sampling period based on the processing data sampled during each third sampling period, and a statistical value obtained by statistical processing Is obtained as the third sampling data, and the statistical processing setting unit can set one or a plurality of statistical values to be obtained as the third sampling data in the statistical processing in the third sampling unit. In addition, it is preferable that the third sampling unit acquires the third sampling data according to the setting of the statistical processing setting unit.

  As one aspect, it is preferable that the third sampling unit performs statistical processing using the first sampling data or the second sampling data sampled during each third sampling period.

  As one aspect, a communication unit capable of communicating with a monitoring device, a third storage unit that stores the third sampling data acquired by the third sampling unit in an accumulative manner, and periodically or the communication unit A third transmission control unit for causing the communication unit to transmit at least a part of the third sampling data stored in the third storage unit to the monitoring device when receiving a predetermined data request signal; It is suitable to provide.

  According to these configurations, it is possible to acquire sampling data having a longer period.

  As one aspect, an operation signal acquisition unit that acquires an operation signal indicating that the monitoring target is operating is provided, and the third sampling unit is when the operation signal acquisition unit acquires the operation signal It is preferable that the third sampling data is acquired only for.

  If the sampling period is sufficiently long, it is sufficient to monitor only the data at the time of operation, so that unnecessary data acquisition at the time of operation stop can be avoided, and the number of sampling data to be stored can be effectively reduced.

  As one aspect, it is preferable that the statistical processing setting unit can set at least one of a maximum value, a minimum value, and an average value, or two or more as a statistical value to be acquired.

  According to this configuration, representative maximum values, minimum values, and average values can be set as statistical values, so that data suitable for monitoring can be collected.

The figure which shows the monitoring system which concerns on this embodiment The block diagram which shows the terminal device which concerns on this embodiment The block diagram which shows the short time arithmetic processing part which concerns on this embodiment Graph showing the time variation of processing data and the moving average of processing data in a certain cycle Graph showing the residual from the moving average in FIG. Histogram showing the distribution of residuals in FIG. Graph showing the difference between obtaining the average value and the maximum value by statistical processing

  An embodiment of a terminal device according to the present invention will be described with reference to the drawings. Below, the monitoring system incorporating the terminal device 100 which concerns on this embodiment is demonstrated. First, the monitoring system according to the present embodiment is provided in each plant or facility in order to monitor a plant provided in the monitoring target area, an infrastructure facility for supplying / processing water, electricity, gas, or the like. Vibration, current value, pressure, etc., temperature, humidity, water level of dam, flow rate of river, ambient conditions such as wind speed, rainfall, shaking, etc. Alternatively, the terminal device 100 is installed at a point for measuring a plurality of devices or temperatures, etc., and data sampled by the terminal device 100 is collected in the monitoring server 1 to monitor a plant or facility in the monitoring target area. Assume a system. As shown in FIG. 1, this monitoring system is attached to each of the plants and facilities to be monitored at one or a plurality of devices, points for measuring temperature, etc. A terminal device 100 that samples sensor data 3 from a sensor to be detected and event data 4 relating to an event (start or end of operation, device failure, etc.) that has occurred in a monitoring target, and data of each plant or facility from each terminal device 100 And a monitoring server (corresponding to a monitoring device) 1 for monitoring each plant and facility by acquiring the network via a network 2 such as a telephone line or the Internet. That is, in this monitoring system, data sampled by the terminal device 100 is collected in the monitoring server 1, and the monitoring server 1 can monitor the plants and facilities in the monitoring target area collectively.

  Next, the terminal device 100 according to the present embodiment will be described with reference to FIGS. First, the terminal device 100 according to the present embodiment roughly includes a data conversion unit 101 that acquires sensor data 3 from a sensor attached to a monitoring target and converts the sensor data 3 into a numerical value, and statistically analyzes data from the data conversion unit 101. A statistical value sampling unit 102 that processes and samples the statistical value; an index value calculation unit 103 that calculates a determination index value for determining the state of a monitoring target from the data from the data conversion unit 101; and event data 4 An event data processing unit 104 that processes the communication server 105 and a communication unit 105 that can communicate with the monitoring server 1. The terminal device 100 processes the event data 4 by the event data processing unit 104 while sampling the sensor data 3 from the monitoring target by the statistical value sampling unit 102 and transmitting the sampled data to the monitoring server 1 via the communication unit 105. Thus, an event that occurs in the monitoring target is also transmitted to the monitoring server 1. Furthermore, the terminal device 100 obtains a determination index value from the sensor data 3 by the index value calculation unit 103 to determine the state of the monitoring target. When it is determined that there is an abnormality, the monitoring server 1 indicates that the monitoring target is abnormal. To be sent to. That is, the terminal device 100 processes the sensor data 3 and the event data 4 related to the monitoring target and transmits them to the monitoring server 1 and the monitoring for transmitting the abnormality to the monitoring server 1 when the monitoring target is abnormal. It has a function. Hereinafter, each part will be described in detail.

  First, the data conversion unit 101 relates to each monitoring target such as vibrations, current values, pressures, etc. in the monitoring target device, and ambient conditions such as temperature, humidity, wind speed, and rainfall at the monitoring target point. Sensor data 3 is acquired from various sensors at a predetermined processing sampling period (for example, a period of 10 milliseconds), converted into a numerical value, and sampled as processing data in the statistical value sampling unit 102 and the index value calculation unit 103 To do. That is, the data conversion unit 101 functions as a processing data sampling unit that samples sensor data 3 from the sensor as processing data at a predetermined processing sampling period.

  The statistical value sampling unit 102 performs statistical processing on the processing data sampled by the data conversion unit 101 at a plurality of sampling periods, stores statistical values obtained by the statistical processing, and sets the statistical values obtained at each period to predetermined values. It is transmitted to the monitoring server 1 at timing. In the present embodiment, the statistical value sampling unit 102 functions as a data processing unit 106 that statistically processes the processing data for each of the subsequent sampling units 109, 113, and 116, and the data processing unit 106 and each Statistical processing setting unit 107 that sets statistical processing performed by sampling units 109, 113, and 116, statistical processing switching unit 108 that can switch the setting of statistical processing setting unit 107, and statistical processing are performed on processing data at different periods. Sampling units 109, 113, 116 for obtaining statistical values, sampling storage units 110, 114, 117 for storing statistical values obtained by the sampling units 109, 113, 116, respectively, and sampling storages. Each sample that causes the communication unit 105 to transmit the statistical values stored in the units 110, 114, and 117 Transmission control units 111, 115, 118, an event signal acquisition unit 112 that acquires various event signals from the event data processing unit 104, and an operation signal acquisition unit 119 that acquires an operation signal from the event data processing unit 104, A determination unit 145 for determining abnormality based on the long-time sampling data acquired by the long-time sampling unit 113, and an abnormal signal generation for generating an abnormality signal indicating that the monitoring target is abnormal based on the determination result of the determination unit 145 Part 146. Hereinafter, each functional unit will be described.

  The data processing unit 106 is longer than the above-described processing sampling cycle and is the same as a short-time sampling cycle (corresponding to a first sampling cycle) described later as preprocessing for statistical processing in each sampling unit 109, 113, 116. Alternatively, the processing data is statistically processed at a data processing cycle (for example, a 0.1 second cycle) shorter than the short-time sampling cycle. The processing data processed by the data processing unit 106 is sent to the sampling units 109, 113, and 116, and further statistically processed in the sampling units 109, 113, and 116.

  The statistical processing setting unit 107 is for setting statistical processing in the data processing unit 106 and each sampling unit 109, 113, 116. In statistical processing in the data processing unit 106 and each sampling unit 109, 113, 116, One or a plurality of types of statistical values to be acquired as data to be sent to each sampling unit 109, 113, 116 or each sampling data (short-time sampling data, long-time sampling data, trend management sampling data) can be set. In this embodiment, the statistical processing setting unit 107 can set any one or more of the maximum value, the minimum value, and the average value as the statistical value to be acquired. The statistical values that can be set by the statistical processing setting unit 107 are not limited to the maximum value, the minimum value, and the average value, and other statistical values may be set as appropriate. For example, the fluctuation range between the maximum value and the minimum value may be used as a statistic value, or when there is data that is larger than a certain value or smaller than other values during the sampling period, even when setting to obtain an average value. For example, a setting for changing a statistical value to be acquired according to data to be processed may be set, such as acquiring a maximum value or a minimum value together with an average value. The statistical processing setting unit 107 also changes the period (data processing period, short sampling period, long sampling period, trend management sampling period) for performing statistical processing in the data processing unit 106 and each sampling unit 109, 113, 116. It is possible. Note that, for each of the data processing unit 106 and each of the sampling units 109, 113, and 116, it is possible to set the type of statistical value to be acquired separately.

  The statistical processing switching unit 108 can switch the setting of the statistical processing setting unit 107. Specifically, in this embodiment, the statistical processing switching unit 108 instructs the statistical processing switching unit 108 via the communication unit 105 to perform statistical processing. The setting of the setting unit 107 can be switched. For example, an instruction may be transmitted from the monitoring server 1 to the statistical processing switching unit 108, or an instruction may be transmitted from another device to the statistical processing switching unit 108. Further, instead of instructing the statistical processing switching unit 108 via the communication unit 105, the statistical processing switching unit 108 is configured with a switch or the like that can be operated from the outside so that an instruction can be directly input to the terminal device 100. Good.

  The short-time sampling unit 109 performs short-time sampling data (corresponding to first sampling data) according to the setting of the statistical processing setting unit 107 for each short-time sampling period (for example, 1 second to 10 second period) longer than the processing sampling period. To get. Specifically, when the short time sampling cycle set by the statistical processing setting unit 107 is the same as the data processing cycle set by the data processing unit 106, the short time sampling unit 109 is processed by the data processing unit 106. Thereafter, the processing data is acquired as short-time sampling data (in this case, the data processing unit 106 and the short-time sampling unit 109 correspond to the first sampling unit). On the other hand, when the short-time sampling cycle set by the statistical processing setting unit 107 is longer than the data processing cycle set by the data processing unit 106, the short-time sampling unit 109 In accordance with the setting of the statistical processing 107, statistical processing is performed based on the processing data sampled during each short sampling period (in this embodiment, the processing data after being processed by the data processing unit 106), One or a plurality of statistical values obtained by statistical processing are acquired as short-time sampling data (in this case, the short-time sampling unit 109 corresponds to the first sampling unit).

  The short-time sampling storage unit (corresponding to the first storage unit) 110 stores the short-time sampling data acquired by the short-time sampling unit 109 in a time-series and accumulative manner. That is, the trend data sampled in a short cycle by the short-time sampling unit 109 is stored in the short-time sampling storage unit 110. In the present embodiment, the short-time sampling storage unit 110 is a ring buffer capable of storing a predetermined number (for example, 240 points; converted into time: 4 to 40 minutes) of short-time sampling data, and new data is acquired. Each time the old data is deleted, only the latest necessary data is stored. As a result, the number of short-time sampling data to be stored is minimized. As will be described later, since necessary data can be stored by the transmission data storage unit 111a, there is no problem even if old data is deleted.

  The short-time sampling transmission control unit (corresponding to the first transmission control unit) 111 stores the short-time sampling data stored in the short-time sampling storage unit 110 in the communication unit 105 only when a predetermined transmission condition is satisfied. At least a part is transmitted to the monitoring server 1. Specifically, when the event signal acquisition unit 112 acquires the event signal, the short-time sampling transmission control unit 111 responds to the event signal among the short-time sampling data stored in the short-time sampling storage unit 110. A transmission data storage unit 111a that acquires and stores short-term sampling data in a range, and a monitoring server that stores the short-time sampling data stored in the transmission data storage unit 111a in the communication unit 105 when a transmission condition is satisfied A transmission control unit 111b that transmits the data to 1. That is, data corresponding to a certain event such as a failure or operation is stored by the transmission data storage unit 111a, and when the transmission condition is satisfied, the monitoring server 1 side (the monitoring server 1 or the monitoring server 1 is selected). By transmitting the stored data to the terminal to be used), it is possible to transmit detailed sensor data (short-time sampling data) to the monitoring server 1 when an event related to a failure or operation occurs. It is possible. In particular, even when the communication unit 105 is set as a transmission condition to receive a predetermined data request signal from the monitoring server 1 side, some event such as a failure or operation may occur due to communication time or communication failure. Even if there is a large time lag from the occurrence of the data request signal from the monitoring server 1 side to the reception of the data request signal, the data transmitted to the monitoring server 1 side can be used as data at a desired timing.

  Specifically, in this embodiment, the transmission data storage unit 111a stores the short-time sampling data stored in the short-time sampling storage unit 110 when the event signal acquisition unit 112 acquires the event signal. It has become. In other words, the short-time sampling storage unit 110 deletes the old data every time new data is acquired and updates the data stored in real time. Data in a necessary state is held in the transmission data storage unit 111a. The transmission data storage unit 111a may be configured to update the stored data every time an event signal is newly acquired, or transmitted when the data stored by the transmission control unit 111b is transmitted. Deleted data may be deleted. Further, the transmission data storage unit 111a can store the data stored in the short-time sampling storage unit 110 for a plurality of time points, and acquires the event signal type and event signal each time a new event signal is acquired. The time and the like may be stored separately in association with the data to be stored. In this case, every time an event signal is newly acquired, the oldest stored data may be deleted and replaced with new storage data. And when it determines with the transmission control part 111b satisfy | filling transmission conditions, you may transmit the data designated from the monitoring server 1 side among the storage data of several time points, or the one or several data of the nearest. And all stored data may be sent.

  And the transmission control part 111b functions also as a transmission condition setting part which can set transmission conditions, and can set various transmission conditions. In this embodiment, the transmission control unit 111b is configured such that the transmission data storage unit 111a newly stores short-time sampling data (that is, the event signal acquisition unit 112 has acquired an event signal), or the communication unit 105 has Either one or both of receiving a predetermined data request signal from the monitoring server 1 side can be set. That is, when the transmission data storage unit 111a newly stores sampling data for a short time or when the communication unit 105 receives a predetermined data request signal according to the transmission condition setting, the transmission control unit 111b Is determined to be satisfied. In this embodiment, the transmission condition can be switched by instructing the transmission control unit 111b via the communication unit 105. For example, an instruction may be transmitted from the monitoring server 1 to the transmission control unit 111b, or an instruction may be transmitted from another device to the transmission control unit 111b. Further, instead of instructing the transmission control unit 111b via the communication unit 105, an instruction may be directly input to the transmission control unit 111b by a switch or the like provided on the terminal device 100 that can be operated from the outside. Further, it may be possible to set that the event signal acquisition unit 112 has acquired a specific type of event signal as a transmission condition, and change whether or not the transmission condition is satisfied depending on the type of the event signal. For example, if the event signal is failure data that requires an emergency, the transmission condition is set so that the event signal acquisition unit 112 transmits data when the event signal is acquired, and if the operation signal does not require an emergency, monitoring is performed. A transmission condition is set so that data is transmitted in response to a request from the server 1 side. The transmission conditions are not limited to those described above, and other conditions may be set.

  The long-time sampling unit (corresponding to the second sampling unit) 113 is set according to the setting of the statistical processing setting unit 107 for each long-time sampling cycle (corresponding to the second sampling cycle, for example, 1 minute cycle) longer than the short-time sampling cycle. Statistical processing is performed based on processing data sampled during each long-time sampling period (in this embodiment, processing data after being processed by the data processing unit 106). A plurality of statistical values are acquired as long-time sampling data. Note that the long-time sampling unit 113 may perform statistical processing using the short-time sampling data sampled during each long-time sampling period, or may the statistical processing be performed using the processing data? Whether to perform statistical processing using short-time sampling data may be switched according to the setting of the statistical processing setting unit 107. That is, the type of monitoring data can be flexibly selected by the combination of data types of the data processing unit 106, the short time sampling unit 109, and the long time sampling unit 113.

  The long-time sampling storage unit (corresponding to the second storage unit) 114 stores the long-time sampling data acquired by the long-time sampling unit 113 in a time-series and accumulation manner. That is, the trend data sampled periodically by the long-time sampling unit 113 is stored in the long-time sampling storage unit 114. In the present embodiment, the long-time sampling storage unit 114 is a ring buffer capable of storing a predetermined number (for example, 2880 points; 48 hours converted to time) of long-time sampling data, and new data is acquired. Every time old data is deleted, only the latest necessary data is stored. As a result, the number of long-time sampling data to be stored is minimized.

  The long-time sampling transmission control unit (corresponding to the second transmission control unit) 115 periodically sends at least part of the long-time sampling data stored in the long-time sampling storage unit 114 to the monitoring server 1 in the communication unit 105. It is supposed to be sent. In the present embodiment, data sampled newly from the previous transmission is transmitted every predetermined time (for example, 24 hours) shorter than the time that can be stored in the long-time sampling storage unit 114. As a configuration in which the long-time sampling storage unit 114 is not provided, the long-time sampling transmission control unit 115 may transmit the sampled data every time the long-time sampling unit 113 samples data. Further, the transmission interval, the transmission condition, and the like can be switched by an instruction from a switch or the like that can be operated from the outside provided in the communication unit 105 or the terminal device 100, like the transmission control unit 111b.

  In the present embodiment, the statistical value sampling unit 102 includes a determination unit 145 that determines whether there is an abnormality in the monitoring target based on the long-time sampling data acquired by the long-time sampling unit 113, and an abnormality in the determination unit 145. An abnormality signal generation unit 146 that generates an abnormality signal indicating that the monitoring target is abnormal when it is determined that there is an abnormality. Then, when an abnormal signal is generated by the abnormal signal generation unit 146, the transmission control unit 111b determines that the transmission condition is satisfied, and causes the communication unit 105 to transmit the abnormal signal to the monitoring server 1. In this embodiment, a threshold value is set for the long-time sampling data, and when the threshold value is exceeded or falls, the determination unit 145 determines that the monitoring target is abnormal, and the determination unit 145 determines that there is an abnormality. When the determination is made, the abnormal signal generation unit 146 generates an abnormal signal, and the transmission control unit 111b transmits the abnormal signal from the communication unit 105 to the monitoring server 1. Thereby, when there is an abnormality in the sampled data, an abnormality signal can be immediately transmitted to the monitoring server 1. When the abnormal signal generation unit 146 generates an abnormal signal, the transmission data storage unit 111a stores the short-time sampling data stored in the short-time sampling storage unit 110, and together with the abnormal signal or the abnormal signal Instead of this, the short-time sampling data stored in the transmission data storage unit 111a may be transmitted to the monitoring server 1, or the long-time sampling transmission control unit 115 or a trend management sampling transmission control unit described later. 118, when there is an overlap with the timing of data transmission by the index value calculation unit 103, priority is given to the transmission of abnormal signals and short-time sampling data.

  In the present embodiment, the short-time sampling data is transmitted only when there is a failure, only when the operation is started or when the operation is completed, and when the data is abnormal, and it is highly necessary to transmit the data to the monitoring server 1 side. The control unit 111b and the long time sampling transmission control unit 115 preferentially transmit the short time sampling data to the communication unit 105 when the timing for transmitting the short time sampling data and the timing for transmitting the long time sampling data overlap. I am trying to make it.

  The trend management sampling unit (corresponding to the third sampling unit) 116 is a statistical processing setting unit 107 for each tendency management sampling cycle (corresponding to the third sampling cycle, for example, one hour cycle or one day cycle) longer than the long-time sampling cycle. In accordance with the setting, statistical processing is performed based on the processing data sampled during each trend management sampling period (processing data after being processed by the data processing unit 106 in this embodiment), and obtained by statistical processing. The obtained one or more statistical values are acquired as trend management sampling data. In the present embodiment, the trend management sampling unit 116 acquires the trend management sampling data only when the driving signal acquisition unit 119 acquires the driving signal. That is, if the sampling period is sufficiently long, it is sufficient to monitor only the data at the time of operation, so that unnecessary data acquisition at the time of operation stop is avoided and the number of sampling data to be stored is reduced. The trend management sampling unit 116 may perform statistical processing using short-time sampling data or long-time sampling data sampled during each trend management sampling period. Whether to use the sampling data or the long-time sampling data for the statistical processing may be switched according to the setting of the statistical processing setting unit 107.

  The trend management sampling storage unit (corresponding to the third storage unit) 117 stores the trend management sampling data acquired by the trend management sampling unit 116 in a time-series and accumulative manner. That is, the trend management sampling storage unit 117 stores trend data sampled periodically by the trend management sampling unit 116. In the present embodiment, the trend management sampling storage unit 110 is a ring buffer capable of storing a predetermined number (eg, 240 points; 10 days or 24 days in terms of time) of trend management sampling data. Old data is deleted each time it is acquired, and only the latest necessary data is stored.

  A trend management sampling transmission control unit (corresponding to a third transmission control unit) 118 periodically sends at least a part of the trend management sampling data stored in the trend management sampling storage unit 117 to the monitoring server 1 in the communication unit 105. It is supposed to be sent. In the present embodiment, data sampled newly from the previous transmission is transmitted every predetermined time (for example, one day) shorter than the time that the trend management sampling storage unit 110 can store. Note that the transmission interval, the transmission condition, and the like can be switched by an instruction from an externally operable switch or the like provided in the communication unit 105 or the terminal device 100, as in the transmission control unit 111b.

  Note that each sampling unit 109, 113, 116 performs statistical processing in each of a plurality of sampling periods instead of one sampling period, and each sampling storage unit 110, 114, 117 separately samples sampling data in each sampling period. For example, the trend management sampling unit 116 samples the trend management sampling data in a one-hour cycle and a one-day cycle, and the trend management sampling storage unit 117 has a one-hour cycle and a one-day cycle, respectively. The trend management sampling data may be stored separately.

  As described above, the statistical value sampling unit 102 performs statistical processing according to the setting of the statistical processing setting unit 107 set according to the instruction to the statistical processing switching unit 108 by the data processing unit 106, and 1 or After obtaining a plurality of statistical values and processing the data by the data processing unit 106, the data is statistically analyzed at three different sampling periods by the short time sampling unit 109, the long time sampling unit 113, and the trend management sampling unit 116. Processed and sampled.

  And when performing statistical processing, when fluctuations that are shorter than the sampling period occur, if the average value is acquired as statistical processing, the fluctuations may be missed, so in that case, depending on the type of fluctuation It is necessary to acquire the maximum value and the minimum value (see FIG. 7). Therefore, since the statistical value sampling unit 102 according to the present embodiment can set the number and type of statistical values obtained by each sampling unit by the statistical processing switching unit 108, it can be set according to the type of monitoring target in which the terminal device 100 is installed. Appropriate statistics. For example, the long-time sampling unit 113 and the trend management sampling unit 116 perform average value processing so that a large data flow can be observed, and the short-time sampling unit in order to observe a short-time surge waveform generated at the time of a failure or the like 109 is to set the statistical processing of the maximum value or the maximum value and the minimum value.

  Note that the types of data statistical processing in the data processing unit 106, the short-time sampling unit 109, the long-time sampling unit 113, and the trend management sampling unit 116 are the same as those of the sampling unit in the subsequent stage (the destination of data after statistical processing). The same type of statistical processing is set, and the data sampled by the short-time sampling unit 109, the long-time sampling unit 113, and the trend management sampling unit 116 from the sampling unit in the previous stage (the source of data for statistical processing) is the same. It is obtained from statistical processing. For example, when the short time sampling unit 109 obtains the maximum value and the minimum value and the long time sampling unit 113 obtains the average value by statistical processing based on the data of the data processing unit 106, the statistical processing of the data processing unit 106 is the maximum. The short time sampling unit 109 performs statistical processing for obtaining the maximum value and the minimum value from the maximum value and the minimum value data obtained by the statistical processing of the data processing unit 106, and the long time sampling unit 113. Performs statistical processing for obtaining an average value from average value data obtained by statistical processing of the data processing unit 106.

  In addition, the statistical value sampling unit 102 according to the present embodiment transmits data sampled in a short cycle by the short-time sampling unit 109 to the monitoring server 1 only when necessary, such as when an event such as a failure or operation occurs. On the other hand, the data sampled by the long-time sampling unit 113 is periodically transmitted to the monitoring server 1 to periodically monitor the monitoring target. In other words, normally only data acquired at a long sampling period is transmitted, and detailed data sampled at a short period is transmitted only when necessary, so that it is possible to obtain detailed data on an as-needed basis as a whole. The amount of data transmission can be reduced, and data communication charges can be reduced. Further, the trend management sampling unit 116 of a longer sampling cycle obtains data of a longer cycle for monitoring a long-term trend such as deterioration of the monitoring target over time.

  Next, the index value calculation unit 103 will be described. The index value calculation unit 103 is used to calculate a determination index value for determining the state of the monitoring target from the data from the data conversion unit 101. For this purpose, as a function unit, the determination index value is determined from the processing data. Each of the arithmetic processing units 120 and 126 for calculating the value, a tendency management sampling unit 129 that statistically processes the determination index value calculated by the short-time arithmetic processing unit 120 at a predetermined cycle, and obtains a statistical value, and each arithmetic processing The determination index values obtained by the units 120 and 126 and the statistical values obtained by the trend management sampling unit 129 are stored in the storage units 121, 127, and 130, respectively, and stored in the storage units 121, 127, and 130, respectively. Acquire various event signals from the transmission control units 121, 128, 131 for transmitting the received data to the communication unit 105 and the event data processing unit 104. Event signal acquisition unit 123, an arithmetic processing setting unit 124 for setting arithmetic processing performed by the arithmetic processing units 120 and 126, an arithmetic processing switching unit 125 capable of switching the setting of the arithmetic processing setting unit 124, and event data processing An operation signal acquisition unit 132 for acquiring an operation signal from the unit 104, a statistical processing setting unit 133 for setting statistical processing performed by the trend management sampling unit 129, and a statistical processing switching unit capable of switching the setting of the statistical processing setting unit 133 134, a determination unit 135 that performs determination based on the determination index value calculated by the short-time calculation processing unit 120, and an abnormal signal generation that generates an abnormal signal indicating that the monitoring target is abnormal based on the determination result of the determination unit 135 Part 136. Hereinafter, each functional unit will be described.

  The short-time arithmetic processing unit 120 sets each short time according to the setting of the arithmetic processing setting unit 124 for each short-time sampling period (for example, 1 second to 10-second period) longer than the processing sampling period (and the above-described data processing period). A short-term determination index value is calculated based on time-series processing data sampled during the sampling period. Specifically, as shown in FIG. 3, the short-time calculation processing unit 120 includes a difference value group acquisition unit 120a, a variance value calculation unit 120b, an analysis value calculation unit 120c, and a calculation setting unit 120d. ing.

  The difference value group acquisition unit 120a performs a smoothing process on the time-series processing data sampled during each short-time sampling period for each short-time sampling period, and performs processing data and corresponding smoothing. A difference value group obtained for each processing data with a difference value from a value obtained by processing is acquired, and the variance value calculation unit 120b uses a difference value as a short time determination index value for each short time sampling period. The variance value in the difference value group acquired by the group acquisition unit 120a is calculated. For example, when processing data (raw data in FIG. 4) as shown in FIG. 4 is obtained in a short sampling period, the difference value group acquisition unit 120a performs, for example, a moving average (moving in FIG. 4) by smoothing processing. An average) is calculated, and a difference value (residual) is calculated for each processing data and the corresponding moving average value. Thereby, a time change (difference value group) of the difference values as shown in FIG. 5 is obtained, and the variance value calculation unit 120b calculates the difference as shown in FIG. 6 from the time change of the difference values (difference value group). A histogram of values can be created, and a variance value of the difference value group can be calculated.

  The analysis value calculation unit 120c performs frequency analysis on the time-series processing data sampled during each short time sampling period and calculates the analysis value as a short time determination index value for each short time sampling period. For example, the analysis value includes the frequency and frequency.

  The calculation setting unit 120d sets, as the short-term determination index value, whether to calculate the variance value group by the variance value calculation unit 120b, to calculate the analysis value by the analysis value calculation unit 120c, or to calculate both. Therefore, the first calculation processing unit 120 calculates one or both of the variance value and the analysis value as the short-term determination index value according to the setting of the calculation setting unit 120d. Specifically, the calculation setting unit 120d sets whether to calculate one or both of the variance value and the analysis value as the short-term determination index value according to the setting of the calculation processing setting unit 124.

  The arithmetic processing setting unit 124 is for setting the arithmetic processing in the short-time arithmetic processing unit 120 and the long-time arithmetic processing unit 126. As described above, which is calculated as the short-term determination index value, the difference value What is performed as the smoothing process in the group acquisition unit 120a, parameters for obtaining a variance value and an analysis value, and various calculation processes such as a calculation process period (short-time sampling period, long-time sampling period) Conditions can be set.

  The arithmetic processing switching unit 125 can switch the setting of the arithmetic processing setting unit 124. In this embodiment, the arithmetic processing switching unit 125 is operated from the outside provided in the communication unit 105 or the terminal device 100 in the same manner as the statistical processing switching unit 108. The setting of the arithmetic processing setting unit 124 can be switched by an instruction from a possible switch or the like.

  The short-time arithmetic processing storage unit 121 stores the short-term determination index values acquired by the short-time arithmetic processing storage unit 121 in a time-series and cumulative manner. Similar to the short-time sampling storage unit 110, the short-time calculation processing storage unit 121 is a ring buffer capable of storing a predetermined number (eg, 240 points; 4 minutes to 40 minutes when converted to time) of short-time determination index values. It consists of

  The short-time arithmetic processing transmission control unit 122 transmits the short-term determination index value acquired in the short-time arithmetic processing storage unit 121 to the communication unit 105, and when the event signal acquisition unit 123 acquires the event signal, Among the short-term determination index values stored in the short-time arithmetic processing storage unit 121, a transmission data storage unit 122a that acquires and stores a short-term determination index value in a range corresponding to the event signal, and a transmission condition (transmission When the credit data storage unit 122a newly stores data, or when the communication unit 105 receives a predetermined data request signal from the monitoring server 1 side), the communication unit 105 receives data for transmission. A transmission control unit 122b that transmits the short-term determination index value stored in the storage unit 122a to the monitoring server 1. The short-time calculation processing transmission control unit 122 basically has the same configuration as the short-time sampling transmission control unit 111 except that the short-time calculation processing storage unit 121 transmits the short-time determination index value. Has been.

  In this embodiment, the index value calculation unit 103 includes a determination unit 135 that determines whether the monitoring target is abnormal based on the short-time determination index value calculated by the short-time calculation processing unit 120, and a determination unit 135. And an abnormal signal generator 136 for generating an abnormal signal indicating that there is an abnormality in the monitoring target when it is determined that there is an abnormality. The transmission control unit 122b causes the communication unit 105 to transmit an abnormal signal to the monitoring server 1 when the abnormal signal is generated by the abnormal signal generation unit 136. That is, depending on the type of abnormality to be monitored, there is a large fluctuation in the processing data, and the dispersion value increases as the fluctuation in the processing data increases. In such a case, if the variance value is calculated as the short-term determination index value, it is possible to detect an abnormality of the monitoring target that increases the fluctuation of the processing data. Further, if an analysis value such as a vibration frequency or a frequency is calculated as a short-term determination index value, an abnormality related to the analysis value such as a change in the natural frequency of the sensor data 3 due to the occurrence of the abnormality can be detected. In this embodiment, a threshold value is set for the variance value and the analysis value, and when the threshold value is exceeded or falls below, the determination unit 135 determines that there is an abnormality in the monitoring target, and the determination unit 135 has an abnormality. Is determined, the abnormal signal generation unit 136 generates an abnormal signal, and the transmission control unit 122b transmits the abnormal signal from the communication unit 105 to the monitoring server 1. When transmitting an abnormal signal, the short-term determination index value stored in the transmission data storage unit 122a may be transmitted to the monitoring server 1, and the timing of data transmission by the statistical value sampling unit 102, When there is an overlap with the transmission timing of the determination index value in the short-time arithmetic processing transmission control unit 122, the long-time arithmetic processing transmission control unit 128, and the tendency management sampling transmission control unit 131, which will be described later, transmission of an abnormal signal is given priority. It is.

  The long-time arithmetic processing unit 126 is time-series sampled during each long-time sampling period according to the setting of the arithmetic processing setting unit 124 for each long-time sampling period (for example, one minute period) longer than the short-time sampling period. The long-term determination index value corresponding to the short-term determination index value calculated by the short-time calculation processing unit 120 is calculated based on the processing data. The long-time arithmetic processing unit 126 has the same configuration as the short-time arithmetic processing unit 120 except that the sampling period is different. Further, the determination unit 135 may also determine the long-term determination index value obtained by the long-time arithmetic processing unit 126, and an abnormal signal may be generated by the abnormal signal generation unit 136 when an abnormality occurs.

  The long-time calculation processing storage unit 127 stores the long-term determination index value calculated by the long-time calculation processing unit 126 in a time-series and accumulative manner. It is a ring buffer that can store long-term determination index values (for example, 240 points, 4 hours in terms of time), and old data is deleted each time new data is acquired, and only the latest necessary data is stored. It is to be stored.

  The long-time arithmetic processing transmission control unit 128 periodically transmits the long-term determination index value stored in the long-time arithmetic processing storage unit 127 to the communication unit 105, and stores the long-time arithmetic processing transmission control unit 128 in the long-time arithmetic processing storage unit 127. The long-time sampling transmission control unit 115 is configured except that the long-time determination index value is stored.

  The trend management sampling unit 129 is acquired during each trend management sampling cycle according to the setting of the statistical processing setting unit 133 for each trend management sampling cycle (for example, one hour cycle or one day cycle) longer than the long-time sampling cycle. Statistical processing is performed based on the time-series short-term determination index value, and one or a plurality of statistical values obtained by the statistical processing are acquired as trend management sampling data. In the present embodiment, the trend management sampling unit 129 acquires the trend management sampling data only when the driving signal acquisition unit 132 acquires the driving signal. Note that the trend management sampling unit 129 may perform statistical processing using the long-term determination index value sampled during each trend management sampling period, and the short-term determination index value and the long-time determination index value. Which of the determination index values is used for statistical processing may be switched according to the setting of the statistical processing setting unit 133.

  Note that the trend management sampling storage unit 130, the trend management sampling transmission control unit 131, the statistical processing setting unit 133, and the statistical processing switching unit 134 are a trend management sampling storage unit 117, a trend management sampling transmission control unit 118, and a statistical processing, respectively. The processing setting unit 107 and the statistical processing switching unit 108 have the same configuration. That is, the trend management sampling unit 129 performs statistical processing based on the statistical processing setting unit 133 set by the statistical processing switching unit 134 and stores the obtained statistical values in the trend management sampling storage unit 130 in an accumulated manner. The trend management sampling transmission control unit 131 causes the communication unit 105 to periodically transmit at least a part of the statistical values stored in the trend management sampling storage unit 130.

  As described above, the index value calculation unit 103 can determine the monitoring target state by calculating the determination index value for determining the monitoring target state at different sampling periods. Then, the calculated determination index value is stored in an accumulated manner, and the long-term determination index value and the trend management sampling data are periodically transmitted to the monitoring server 1 side. By transmitting, the amount of data transmission can be suppressed and the data communication fee can be suppressed. Note that the configuration adopted by the statistical value sampling unit 102 and the configuration that can be adopted can be similarly adopted by the index value calculation unit 103.

  Next, the event data processing unit 104 that processes the event data 4 will be described. The event data processing unit 104 generates an event signal indicating an event that has occurred in the monitoring target based on the event data 4, and controls the operation of the statistical value sampling unit 102 and the index value calculation unit 103, or generates the generated event signal. This is transmitted to the monitoring server 1 side, and includes an event data acquisition unit 137, an event signal generation unit 138, a data storage range setting unit 139, and a data storage control unit 140 as functional units.

  The event data acquisition unit 137 acquires various event data 4 indicating that a predetermined event has occurred in the monitoring target. Examples of the event data 4 include failure data indicating that the monitoring target has failed and operation data indicating that the monitoring target is operating.

  The event signal generation unit 138 generates an event signal corresponding to the event data 4 acquired by the event data acquisition unit 137. For example, when the device is to be monitored, when the event data acquisition unit 137 acquires failure data, a failure signal indicating that the monitoring target has failed is generated according to the type of failure, and the event data acquisition unit 137 Is switched from a state in which operation data has been acquired to a state in which operation data is not acquired, an operation stop signal indicating that the monitoring target has stopped operation is generated, and the event data acquisition unit 137 has not acquired operation data. When switching from a state to a state in which operation data is acquired, an operation start signal indicating that the monitoring target has started operation is generated, and when the event data acquisition unit 137 continuously acquires operation data, the monitoring target is An operation signal indicating that the vehicle is in operation is generated (when the temperature at the installation point is monitored, the weather changes such as rain). And the like to generate an event signal indicating the occurrence of a natural disaster such as an earthquake). Then, the generated event signal is sent to the data storage control unit 140, and among the event signals, only the driving signal is sent to the driving signal acquisition units 119 and 132 by the determination unit 141. In addition, the event signal generation unit 138 causes the event data acquisition unit 137 to continue the event data for a predetermined time so that no event signal is generated when erroneous event data 4 is instantaneously generated due to a malfunction of the monitoring target. Event signal is generated when it is acquired.

  The data storage range setting unit 139 sets the range of the short-time sampling data and the short-term determination index value that the transmission data storage units 111a and 122a should store for each type of event signal generated by the event signal generation unit 138. The data storage control unit 140 stores the transmission data storage unit 111a in the transmission data storage unit 111a, 122a according to the type of the event signal based on the data storage range information. 122a stores the short-time sampling data to be stored and the range of the short-term determination index value. Specifically, in the data storage range setting unit 139, a time for delaying transmission to the data storage control unit 140 is set for each type of event signal, and the data storage control unit 140 sets the event signal generation unit 138. The event signal generated in step S1 is received, the event signal is held for a time corresponding to the type of the event signal based on the setting of the data storage range setting unit 139, and the received event signal is then transmitted to the transmission data storage units 111a and 122a. To send to. That is, the data storage control unit 140 delays transmission of the event signal to the transmission data storage units 111a and 122a by a time corresponding to the type of the event signal. Then, the event signal transmitted to the transmission data storage units 111a and 122a is transmitted to one or both of the transmission data storage units 111a and 122a by the determination unit 142. The setting of the data storage range setting unit 139 can be switched by an instruction from a switch or the like provided on the communication unit 105 or the terminal device 100 that can be operated from the outside.

  For example, what is required as data at the start of operation is data within a predetermined period until the start of steady operation after the start of operation, and what is required as data at the end of operation is complete operation after the end of operation. Although it is data in the range of a predetermined period until it stops, when the operation start signal or the operation stop signal is generated, the transmission data storage units 111a and 122a immediately include the short-time sampling storage unit 110 and the short-time arithmetic processing storage unit. If the data stored in 121 is stored, only the data in the range before the start of operation and before the end of operation can be acquired, and the data in the necessary range cannot be stored. Therefore, the data storage range setting unit 139 sets a time for delaying transmission to the data storage control unit 140 for each event signal type, and the data storage control unit 140 sets the event signal for the time corresponding to the event signal type. By delaying transmission to the data storage units 111a and 122a for transmission, the timing at which the event signal acquisition units 112 and 123 acquire the operation start signal, the operation stop signal, etc. after moving to the steady operation after starting operation, As a timing at which the operation is completely stopped after the operation is completed, a necessary range of data is stored in the transmission data storage units 111a and 122a. The data storage control unit 140 excludes the operation signal from the signals transmitted to the transmission data storage units 111a and 122a.

  Further, the data storage control unit 140 monitors the event signal to the communication unit 105 at the same timing as transmitting to the transmission data storage units 111a and 122a or when receiving the event signal from the event signal generation unit 138. The data is transmitted to the server 1 side.

  As described above, the event data processing unit 104 generates an event signal corresponding to the event data 4 and transmits the event signal to the monitoring server 1 side. The data storage control unit 140 sets an appropriate timing for storing data in the transmission data storage units 111a and 122a.

  As described above, the terminal device 100 according to the present embodiment samples the sensor data 3 from the monitoring target by the statistical value sampling unit 102 and transmits it to the monitoring server 1, and determines from the sensor data 3 by the index value calculation unit 103. An index value is obtained to determine the state of the monitoring target, and the event data processing unit 104 processes the event data 4 to transmit the event generated in the monitoring target to the monitoring server 1 as well as the statistical value sampling unit 102 and the index value calculation unit 103 is controlled.

  Finally, advantages of the terminal device 100 according to the present embodiment will be described. First, depending on the type of monitoring target, there may be a fluctuation with a period shorter than the sampling cycle. If an average value is acquired as a statistical process, the fluctuation may be overlooked. And what kind of fluctuation can occur in the data is determined to some extent depending on the type of apparatus. In that case, it is necessary to acquire the maximum value and the minimum value according to the type of variation. On the other hand, in the present embodiment, the number and type of statistical values obtained by the sampling units 109, 113, 116, and 129 can be set separately by the statistical processing switching units 107 and 133, so that the monitoring target on which the terminal device 100 is installed Appropriate statistical values can be set according to the type of. Thereby, it is possible to effectively reduce the number of sampling data to be stored while acquiring necessary data.

  The terminal device 100 according to the present embodiment can not only transmit the sampling data to the monitoring server 1 but also determine the monitoring target state by obtaining the determination index value from the sampling data by the index value calculation unit 103. Therefore, it is possible to accurately detect abnormalities occurring in the monitoring target. Further, if the above-described calculation of the determination index value performed by the terminal device 100 is performed on the monitoring server 1 side, an enormous amount of data is transmitted to the monitoring server 1 side, but the calculation of the determination index value is performed on the terminal device. By carrying out with 100, the amount of data transmission can be suppressed and the data communication charge can be suppressed.

  The terminal device 100 according to the present embodiment transmits data obtained in a short cycle by the short-time sampling unit 109 and the short-time arithmetic processing unit 120 to the monitoring server 1 side only when necessary, such as when an event such as a failure or operation occurs. The data obtained by the long-time sampling unit 113 and the long-time arithmetic processing unit 126 is periodically transmitted to the monitoring server 1 side to periodically monitor the monitoring target. In other words, normally only data acquired at a long sampling period is transmitted, and detailed data sampled at a short period is transmitted only when necessary, so that it is possible to obtain detailed data on an as-needed basis as a whole. The amount of data transmission can be reduced, and data communication charges can be reduced.

[Other Embodiments]
Finally, other embodiments of the terminal device according to the present invention will be described. Note that the configurations disclosed in the following embodiments can be applied in combination with the configurations disclosed in other embodiments as long as no contradiction arises.

(1) It is not necessary to adopt all the configurations shown in FIG. 2, and only a part of the configuration shown in FIG. 2 may be adopted without departing from the spirit of the present invention. For example, without adopting the trend management sampling units 116 and 129 and the configuration related thereto, only the data based on the short sampling period and the long sampling period may be obtained, or the index value calculation unit 103 or The event data processing unit 104 may not be provided, or the data processing unit 106 does not perform statistical processing, and the processing data of the data conversion unit 101 is sent to each sampling unit 109, 113, 116. Is possible.

(2) In the above embodiment, the long-time sampling transmission control unit 115 periodically sends at least a part of the long-time sampling data stored in the long-time sampling storage unit 114 to the monitoring server 1 in the communication unit 105. Although the configuration for transmission is described as an example, the embodiment of the present invention is not limited to this, and the monitoring server 1 stores the long-time sampling data every predetermined time shorter than the time that the long-time sampling storage unit 114 can store. The terminal device 100 may be configured to output a transmission request signal and transmit at least part of the long-time sampling data stored in the long-time sampling storage unit 114 to the monitoring server 1 in response to the transmission request signal.

(3) In the above embodiment, the trend management sampling transmission control unit 118 periodically sends at least a part of the trend management sampling data stored in the trend management sampling storage unit 117 to the monitoring server 1 in the communication unit 105. Although the configuration for transmission is described as an example, the embodiment of the present invention is not limited to this, and the monitoring server 1 stores the trend management sampling data every predetermined time shorter than the time that the trend management sampling storage unit 117 can store. The terminal device 100 may be configured to output a transmission request signal and transmit at least a part of the trend management sampling data stored in the trend management sampling storage unit 117 to the monitoring server 1 in response to the transmission request signal.

(4) In the above embodiment, the data storage control unit 140 has been described with an example of a configuration in which transmission of event signals to the transmission data storage units 111a and 122a is delayed by a time corresponding to the type of event signal. However, the embodiment of the present invention is not limited to this, and the data storage control unit 140 stores the transmission data storage in the transmission data storage units 111a and 122a according to the type of the event signal based on the data storage range information. There is no particular limitation as long as the units 111a and 122a store the short-time sampling data and the short-term determination index value ranges to be stored.

(5) One or a plurality of sensors may be connected to the terminal device 100. When a plurality of sensors are connected, the type of statistical processing and the sampling period may be set for each sensor.

(6) The system in which the terminal device 100 is used is not limited to that shown in FIG. 1 and can be changed as appropriate, such as providing a relay station for transferring data between the terminal device 100 and the monitoring server 1. .

(7) The storage units 110, 114, 117, 121, 127, and 130 are not limited to ring buffers, and various types can be used.

(8) Regarding other configurations, it should be understood that the embodiments disclosed herein are illustrative in all respects and that the scope of the present invention is not limited thereby. Those skilled in the art will readily understand that modifications can be made as appropriate without departing from the spirit of the present invention. Accordingly, other embodiments modified without departing from the spirit of the present invention are naturally included in the scope of the present invention.

  The present invention can be used in a terminal device that samples data from a sensor attached to a monitoring target.

100 terminal device 101 data conversion unit (processing data sampling unit)
105 Communication Unit 107 Statistical Processing Setting Unit 108 Statistical Processing Switching Unit 109 Short-Time Sampling Unit (First Sampling Unit)
110 Short-time sampling storage unit (first storage unit)
111 Short-time sampling transmission control unit (first transmission control unit)
111a Transmission data storage unit 112 Event signal acquisition unit 113 Long-time sampling unit (second sampling unit)
114 Long-time sampling storage unit (second storage unit)
115 Long-time sampling transmission control unit (second transmission control unit)
116 Trend management sampling unit (third sampling unit)
117 Trend management sampling storage unit (third storage unit)
118 Trend management sampling transmission control unit (third transmission control unit)
119 Operation signal acquisition unit 137 Event data acquisition unit 138 Event signal generation unit 139 Data storage control unit 140 Data storage range setting unit

Claims (14)

A terminal device that samples data from a sensor attached to a monitoring target,
A processing data sampling unit that samples data from the sensor as processing data at a predetermined processing sampling period;
For each first sampling period longer than the processing sampling period, statistical processing is performed based on the processing data sampled during each first sampling period, and a statistical value obtained by the statistical processing is converted into first sampling data. A first sampling unit obtained as
For each second sampling period longer than the first sampling period, statistical processing is performed based on the processing data sampled during each second sampling period, and a statistical value obtained by the statistical processing is obtained as second sampling data. A second sampling unit obtained as
In the statistical processing in the first sampling unit and the second sampling unit, a statistical processing setting unit capable of setting one or a plurality of types of statistical values to be acquired as the first or second sampling data;
A statistical processing switching unit capable of individually switching the setting of the statistical processing setting unit between the first sampling unit and the second sampling unit;
The first sampling unit and the second sampling unit are terminal devices that acquire the first or second sampling data according to the setting of the statistical processing setting unit.   The terminal apparatus according to claim 1, wherein the statistical processing setting unit can change at least the first sampling period in the first sampling unit.   The terminal device according to claim 1, wherein the second sampling unit performs statistical processing using the first sampling data sampled during each second sampling period. A communication unit capable of communicating with the monitoring device;
A first storage unit for accumulatively storing the first sampling data acquired by the first sampling unit;
A first transmission control unit that causes the communication unit to transmit at least a part of the first sampling data stored in the first storage unit to the monitoring device only when a predetermined transmission condition is satisfied;
A second storage unit for accumulatively storing the second sampling data acquired by the second sampling unit;
Periodically or when the communication unit receives a predetermined data request signal, the communication unit transmits at least a part of the second sampling data stored in the second storage unit to the monitoring device. The terminal device according to any one of claims 1 to 3, further comprising a second transmission control unit. An event signal acquisition unit for acquiring an event signal indicating that a predetermined event has occurred in the monitoring target;
When the event signal acquisition unit acquires the event signal, the first sampling data in a range corresponding to the event signal is acquired and stored among the first sampling data stored in the first storage unit. A transmission data storage unit,
The said 1st transmission control part makes the said communication part transmit the said 1st sampling data stored in the said data storage part for transmission to the said monitoring apparatus, when the said transmission conditions are satisfy | filled. Terminal device. A data storage range setting unit for storing data storage range information in which the range of the first sampling data to be stored by the transmission data storage unit is stored for each type of the event signal;
The range of the first sampling data to be stored by the transmission data storage unit according to the type of the event signal acquired by the event signal acquisition unit based on the data storage range information in the transmission data storage unit The terminal device according to claim 5, further comprising a data storage control unit that stores the data. An event data acquisition unit for acquiring event data indicating that a predetermined event has occurred in the monitoring target;
The terminal device according to claim 5, further comprising: an event signal generation unit that generates the event signal when the event data acquisition unit continuously acquires the event data for a predetermined time.   The terminal according to any one of claims 5 to 7, wherein the first transmission control unit determines that the transmission condition is satisfied when the transmission data storage unit newly stores the first sampling data. apparatus.   The terminal device according to any one of claims 4 to 8, wherein the first transmission control unit determines that the transmission condition is satisfied when the communication unit receives a predetermined data request signal. For each third sampling period longer than the second sampling period, statistical processing is performed based on the processing data sampled during each third sampling period, and a statistical value obtained by the statistical processing is obtained as third sampling data. A third sampling unit to be acquired as
The statistical processing setting unit can set one or a plurality of statistical values to be acquired as the third sampling data in the statistical processing in the third sampling unit,
The terminal device according to claim 1, wherein the third sampling unit acquires the third sampling data according to a setting of the statistical processing setting unit.   The terminal apparatus according to claim 10, wherein the third sampling unit performs a statistical process using the first sampling data or the second sampling data sampled during each third sampling period. A communication unit capable of communicating with the monitoring device;
A third storage unit for accumulatively storing the third sampling data acquired by the third sampling unit;
Periodically or when the communication unit receives a predetermined data request signal, the communication unit transmits at least a part of the third sampling data stored in the third storage unit to the monitoring device. The terminal device according to claim 10 or 11, further comprising a third transmission control unit. An operation signal acquisition unit that acquires an operation signal indicating that the monitoring target is operating;
The terminal device according to any one of claims 10 to 12, wherein the third sampling unit acquires the third sampling data only when the operation signal acquisition unit acquires the operation signal. The statistical processing setting unit can set at least one of a maximum value, a minimum value, and an average value, or two or more as a statistical value to be acquired. Terminal device.

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