JP5771782B2 - Monitoring device, monitoring system, program - Google Patents

Description

  The present invention relates to a monitoring device that determines the state of a desired monitoring event using measurement information obtained from a measuring means, a monitoring system in which a plurality of monitoring devices communicate via a communication path, and a program that causes a computer to function as the monitoring device It is about.

  Generally, various systems including many load devices such as an air conditioning system and a lighting system are installed in a specific area such as a park or an event venue or a building such as a building. In this type of system, a large number of measuring means (sensors) are installed in each part, and the state of various monitoring events in the system is determined using measurement information measured by the sensors. The “monitoring event” includes not only the presence / absence of abnormality of the load device but also the operation state of the load device.

  In order to determine a state such as the occurrence of an abnormality using measurement information measured by a sensor for a desired monitoring event, it is conceivable to perform a simulation by modeling the system. However, in order to perform a simulation, a great amount of time and cost are required for creating a model and executing the simulation, and in addition, a highly functional hardware resource is required, which is not practical.

  Therefore, as described in Patent Document 1, by setting a judgment formula that defines conditions for judging the state of the monitoring event, and substituting the measurement information measured by the sensor into the judgment formula, A technique for determining the state is employed.

  In the technique described in Patent Document 1, an abnormality determination device (monitoring device) that acquires measurement information from a large number of sensors is used. The abnormality determination device generates a determination formula corresponding to the connected sensor by appropriately combining a determination formula (basic formula) and a substitution formula (conversion formula) that can replace variables of the determination formula. The status of the monitoring event is determined using the generated determination formula.

Japanese Patent No. 45525414

  By the way, since there are many different systems constructed in buildings such as areas and buildings in a specific range, the number of monitoring events is large, and there are cases where hundreds or more sensors are provided. It is difficult to determine the status of the monitoring event intensively only by the above.

  In order to solve this problem, it is conceivable that a plurality of abnormality determination devices that obtain measurement information from sensors are provided in a distributed manner, and the state of the monitoring event is determined in each abnormality determination device. However, when abnormality determination devices are arranged in a distributed manner, the conditions for determination are determined for each abnormality determination device according to the type of sensor managed for each abnormality determination device in order to determine the state of the monitoring event. There is a problem that it is necessary to set, and a great deal of labor is required for the setting work.

  It is an object of the present invention to provide a monitoring device that can reduce the setting work of the condition for determining the state of the monitoring event and can appropriately determine the state of the monitoring event using appropriate monitoring information. It is another object of the present invention to provide a monitoring system in which a plurality of monitoring devices communicate via a communication path, and a program that causes a computer to function as the monitoring device.

  In order to achieve the above object, the monitoring device according to the present invention obtains measurement information related to a prescribed monitoring event from a measurement unit, and applies the measurement information acquired by the acquisition unit to a determination formula. A determination unit that determines the state of a monitoring event, a communication unit that communicates with other devices and transmits / receives the types of measurement information that are measured by the measurement unit, and a type of measurement information that is measured by the measurement unit And an identification information management unit that holds the types of measurement information that can be acquired from other devices through the communication unit, and a device operation evaluation unit that extracts measurement information that conforms to the determination formula from the measurement information stored in the identification information management unit, The identification information management unit acquires measurement information from the other device through the communication unit and passes it to the determination unit when the determination formula used for determination in the determination unit includes measurement information acquired from the other device. Toss .

  In this monitoring device, the communication unit transmits summary information gathered into one type of information common to a plurality of types of measurement information together with the address of the other device when notifying the type of measurement information to the other device, and manages the identification information When the summary information is received from the other device, the unit holds the summary information. When the determination formula used for determination in the determination unit includes measurement information acquired from the other device, the unit refers to the summary information and the address to the other device. It is preferable to request the required measurement information.

  In this monitoring device, the communication unit preferably uses the value of the Bloom filter as the summary information.

  The monitoring apparatus includes a determination information storage unit that stores a determination formula for determining the state of the monitoring event, and the determination information storage unit also includes a conversion formula that replaces the measurement information included in the determination formula with other measurement information. The device operation evaluation unit may update the determination formula using the conversion formula stored in the determination information storage unit when the monitoring information included in the determination formula is not stored in the identification information management unit. preferable.

  In this monitoring apparatus, the communication unit exchanges the determination formula and the conversion formula stored in the determination information storage unit with another device, and the determination formula and the conversion formula received from the other device are stored in the determination information storage unit. If not, it is preferable to additionally write the received judgment formula and conversion formula.

  In this monitoring device, it is preferable that the device operation evaluation unit selects whether or not to adopt a determination formula for the monitoring event in accordance with a specified priority condition when the monitoring event is the same as that of another device.

  In this monitoring apparatus, it is preferable that the device operation evaluation unit adopts a determination formula for a monitoring event with a priority condition that the number of pieces of measurement information acquired from other devices is the minimum for the measurement information used in the determination formula.

  In this monitoring apparatus, the acquisition unit evaluates whether or not the measurement information is normal for each measurement unit, and obtains a ratio of a period that is normal in a predetermined period as an index of reliability. When the monitoring event is the same as that of other devices, it is preferable to use highly reliable measurement information indicated by the index in the determination formula.

  In this monitoring apparatus, the acquisition unit evaluates whether or not the measurement information is normal for each measurement unit, and the device operation evaluation unit does not employ a determination formula that uses the measurement information when the measurement information becomes abnormal. It is preferable to update the judgment formula.

  A monitoring system according to the present invention is a monitoring system comprising a plurality of monitoring devices according to any one of claims 1 to 9, wherein the monitoring means is managed for each of the plurality of monitoring devices. The monitoring devices communicate with each other through a communication path.

  The program according to the present invention determines a state of a monitoring event by applying a computer to an acquisition unit that acquires measurement information related to a specified monitoring event from a measurement unit, and applying the measurement information acquired by the acquisition unit to a determination formula. A communication unit that communicates between the determination unit, the measurement unit that communicates with the other device and measures the type of measurement information that is measured by the measurement unit, and the other unit through the type of measurement information that the measurement unit measures and the communication unit. An identification information management unit that holds the types of measurement information that can be acquired from the device, and a device operation evaluation unit that extracts measurement information that conforms to the determination formula from the measurement information stored in the identification information management unit. When the determination formula used for determination in the determination unit includes measurement information acquired from another device, the unit functions as a monitoring device that acquires measurement information from the other device through the communication unit and passes it to the determination unit. It is intended.

  According to the configuration of the present invention, the task of setting conditions for determining the state of a monitoring event is reduced, and the state of a monitoring event can be appropriately determined using appropriate monitoring information.

It is a block diagram which shows embodiment. FIG. 3 is an operation explanatory diagram of a main part of the first embodiment. FIG. 10 is an operation explanatory diagram of a main part of the second embodiment. FIG. 10 is an operation explanatory diagram of a main part of the third embodiment.

  As shown in FIG. 1, the monitoring device 10 is connected to a higher-level communication path 21 and constructs a monitoring system by communicating with other monitoring devices 10 via the higher-level communication path 21. This monitoring system is configured to transmit measurement information measured by the sensor 30 serving as a measurement unit through the lower communication path 22 and input it to the monitoring device 10. In the illustrated example, the relay device 20 is connected to the lower communication path 22, and the monitoring device 10 is configured to communicate with the device 20 and acquire measurement information measured by the sensor 30 through the device 20. . Here, the upper communication path 21 and the lower communication path 22 may be wireless communication paths in addition to wired communication paths. Further, one of the upper communication path 21 and the lower communication path 22 may be a wired communication path and the other may be a wireless communication path.

  For the sake of convenience, in the embodiment described below, for the sake of convenience, a communication method conforming to IEEE 802.3 is adopted for communication performed through the upper communication path 21, and general-purpose serial communication is performed for communication performed through the lower communication path 22. The case where it is adopted is assumed. Further, an IP address is used as an address for the monitoring device 10 to communicate with another monitoring device 10 through the upper communication path 21.

  By the way, the monitoring device 10 may be used also as the device 20. That is, the sensor 30 may be connected to the monitoring apparatus 10 through the lower communication path 22 without using the relay device 20. Further, identification information is given to each sensor 30 in order to specify a measurement event. The identification information of the sensor 30 is given so that the measurement event can be identified by a naming rule described later. That is, the identification information of the sensor 30 is set so as to represent a measurement event depending on the location of the monitoring point measured by the sensor 30 and the type of measurement information measured by the sensor 30. In addition, the measurement event is individually identified for the load device 32 including the sensor group 31 including a plurality of sensors such as an air conditioner. Hereinafter, the sensors included in the sensor group 31 are described as sensors 30 without being particularly distinguished.

  This monitoring system uses the measurement information measured by the sensor 30 to monitor a required monitoring event at a monitoring point defined by the monitoring system. The monitoring event assumes, for example, an abnormality or failure of the load device 32 to be monitored, an abnormal high temperature of the space to be monitored or an environmental abnormality such as smoke generation, and the measurement information measured by the sensor 30 is The state of the monitoring event is determined by being applied to an appropriate determination formula. Further, the monitoring event may be not only an event expressed in two stages, such as the presence or absence of an abnormality with respect to the monitoring target, but also an event for determining the level in a plurality of stages.

  The determination formula includes one or more variables (parameters) so that one or more types of measurement information can be applied. By the way, in the monitoring system, the type and number of the load devices 32 are different depending on the site, and the type and number of the sensors 30 are different. Therefore, there is a possibility that measurement information acquired from the sensor 30 by the monitoring device 10 does not conform to a standard determination formula set in the monitoring device 10 in advance. In short, measurement information applied to the standard judgment formula may not be obtained from the sensor 30 managed by the monitoring device 10.

  Therefore, when the variable of the standard judgment formula can be expressed by another variable, the variable contained in the standard judgment formula can be replaced with another variable by using the conversion formula for converting the variable. . In short, when a measurement event is obtained from the sensor 30 instead of the measurement event used in the standard judgment formula, a variable of the standard judgment formula is replaced using a conversion formula. The process of applying a conversion formula to a variable included in a standard judgment formula and replacing it with another variable is performed only once in principle. However, another conversion formula is applied to a variable that has been replaced by applying a conversion formula. By doing so, substitution to another variable may be enabled.

  In this way, since the standard judgment formula is used and the judgment formula is adapted by applying an appropriate transformation formula so as to be adapted to the sensor 30 provided in the field, the standard judgment formula is used as a meta rule, and the conversion formula is used. Sub-rules can be integrated to generate rules that match the site. Specific examples of standard judgment formulas and conversion formulas are shown in Table 1.

表１に示しているように、本実施形態では、標準の判定式および変換式において、監視事象およびセンサ３０の識別情報に相当する変数が正規表現を用いて表される。表１において、［．］は任意の１文字にマッチし、［＊］はその前の文字の０回以上の繰り返しを意味する正規表現である。すなわち、［．＊］は任意の文字列にマッチする。また、［￥１］は［．＊］がマッチした文字列を意味する正規表現である。したがって、監視事象に関する場所を特定する文字列とセンサ３０の識別情報を表す文字列とを、標準の判定式および変換式に適用することにより、センサ３０から得られる計測情報に適合した判定式が自動的に生成される。

As shown in Table 1, in this embodiment, in the standard determination formula and conversion formula, variables corresponding to the monitoring event and the identification information of the sensor 30 are expressed using regular expressions. In Table 1, [. ] Matches an arbitrary character, and [*] is a regular expression that means zero or more repetitions of the preceding character. That is, [. *] Matches any character string. [¥ 1] is [. *] Is a regular expression that means a matched character string. Therefore, by applying the character string that specifies the location related to the monitoring event and the character string that represents the identification information of the sensor 30 to the standard determination expression and the conversion expression, a determination expression that matches the measurement information obtained from the sensor 30 is obtained. Generated automatically.

  Below, the monitoring apparatus 10 used in order to implement | achieve the above-mentioned operation | movement is demonstrated. The monitoring apparatus 10 is realized using a device that operates according to a program, such as an embedded microcomputer. Therefore, it is possible to cause the computer to function as the monitoring device 10 by using an appropriate program.

  As described above, the sensor 30 may be provided independently, or may be incorporated in a load device 32 such as an air conditioner or a heat source machine. The sensor 30 may be incorporated in a system constructed by combining a plurality of load devices 32, such as an air conditioning system installed in a building or a region. Further, in the example shown in FIG. 1, the sensor 30 is provided separately from the monitoring device 10, but a part or all of the sensor 30 managed by the monitoring device 10 is provided integrally with the monitoring device 10. Also good. For example, a part or all of the sensor 30 and the monitoring device 10 may be incorporated in the same load device 32.

  In the following description, it is assumed that the monitoring system is a building air-conditioning monitoring system including an air conditioner and a heat source device. The air-conditioning monitoring system includes a large number of sensors 30, in addition to the sensors 30 attached to the air conditioner and the heat source machine, the sensor 30 for measuring the temperature and flow rate in the flow path of the heat medium and the air duct, the indoor and outdoor air A sensor 30 for measuring temperature is also included in the air conditioning monitoring system. The type and number of sensors 30 vary depending on the type of monitoring target monitored by the monitoring system and the environment of the site where the monitoring target is installed. However, the monitoring system described below is flexible to the difference in the type and number of sensors 30. The function corresponding to is provided.

  As shown in FIG. 1, the monitoring device 10 communicates with the acquisition unit 11 as an interface for acquiring measurement information measured by the sensor 30 and another monitoring device 10 through the upper communication path 21. Part 12. The acquisition unit 11 individually acquires measurement information from the plurality of sensors 30. As described above, the sensor 30 has identification information for identifying individual measurement events, and the acquisition unit 11 receives the measurement information measured by the sensor 30 together with the identification information of the sensor 30, thereby detecting the sensor 30. The measurement information measured every time is acquired individually.

  Furthermore, the monitoring apparatus 10 includes a determination unit 13 in which a determination formula is set. The determination unit 13 includes a reference storage unit 131 in which a determination formula is stored, and determines the state of the monitoring event by substituting measurement information acquired from the sensor 30 into the determination formula set in the reference storage unit 131. In addition, the monitoring device 10 includes a determination information storage unit 14 that stores at least a standard determination formula among standard determination formulas and conversion formulas as shown in Table 1, and generates a determination formula used by the determination unit 13. And an operation evaluation unit 15. The determination information storage unit 14 is preferably configured using a rewritable nonvolatile memory.

  An identification information management unit 16 including a memory is provided between the device operation evaluation unit 15 and the communication unit 12. The identification information management unit 16 has a function of holding identification information of the sensor 30. The device operation evaluation unit 15 includes a selection unit 151 having a function for selecting a standard determination formula or a combination of a standard determination formula and a conversion formula from the determination information storage unit 14. Furthermore, the device operation evaluation unit 15 includes a generation unit 152 that generates a determination formula using information selected by the selection unit 151. As will be described later, the selection unit 151 also has a function of extracting identification information that matches the determination formula generated by the generation unit 152 from the identification information of the sensor 30 held in the identification information management unit 16.

  In addition to the configuration described above, the monitoring device 10 includes an operation unit 17 such as a switch, an input reception unit 18 that receives input from the operation unit 17, a determination result in the determination unit 13, and a standard determination formula selected by the selection unit 151. And a display unit 19 for displaying a conversion formula and the like. Since the monitoring device 10 is configured using a built-in microcomputer, the operation unit 17 is, for example, a switch, and the display unit 19 is, for example, a small liquid crystal monitor. Further, a touch panel in which the operation unit 17 and the display unit 19 are integrated may be used. The operation unit 17 has a function of inputting identification information of the sensor 30 to be held in the identification information management unit 16. However, the identification information of the sensor 30 held in the identification information management unit 16 is not only input from the operation unit 17 but also acquired from another monitoring device 10 through the communication unit 12.

  When the monitoring device 10 is configured by a general-purpose computer, an input device such as a keyboard or a mouse is used as the operation unit 17, an output device such as a monitor device is used as the display unit 19, and determination information is stored. A hard disk device can be used for the unit 14 and the identification information management unit 16.

  Next, the operation will be described. The monitoring apparatus 10 according to the present embodiment holds identification information of the sensors 30 connected to the other monitoring apparatuses 10 and optimizes the identification information of the sensors 30 that match the determination formula variable generated by the generation unit 152. To do. In other words, the variable included in the determination formula generated by the generation unit 152 may not match the measurement information of the sensor 30 connected to the monitoring device 10. In such a case, the measurement information suitable for the variable is searched from the sensors 30 managed by the other monitoring devices 10, and if there is suitable measurement information, the measurement information is used to monitor by the determination formula. Event determination is performed with high accuracy.

  In order for each monitoring device 10 to mutually hold the identification information of the sensor 30, each monitoring device 10 notifies the other monitoring device 10 of the identification information of the sensor 30 through the upper communication path 21. In the basic operation, the monitoring device 10 broadcasts the identification information of the sensor 30 to all the other monitoring devices 10 by broadcast. However, the monitoring device 10 is configured to forward the identification information of the sensor 30 to the specified specific monitoring device 10 by multicast. It is good. The timing at which the monitoring device 10 transfers the identification information of the sensor 30 to the other monitoring device 10 is such that when the air conditioning monitoring system is activated or when the air conditioning monitoring system returns from the stopped state, the monitoring device 10 performs air conditioning monitoring. Selected when joining the system.

  Through the above operation, each monitoring device 10 acquires the identification information of the sensor 30 connected to the other monitoring device 10, and stores the identification information of the sensor 30. That is, the identification information management unit 16 of the monitoring device 10 acquires the identification information of the sensor 30 from the other monitoring device 10 through the communication unit 12, and stores the acquired identification information of the sensor 30. The identification information of the sensor 30 connected to each monitoring device 10 may be input from the operation unit 17, but is preferably acquired automatically from the sensor 30 through the acquisition unit 11. An example of identification information of the sensor 30 held by the identification information management unit 16 is shown in Tables 2 and 3. Table 2 shows the state before acquiring the identification information of the sensor 30 from the other monitoring device 10, and Table 3 shows the state after acquiring the identification information of the sensor 30 from the other monitoring device 10.

表２、表３におけるセンサ３０の識別情報は、以下に説明する所定の命名規則で各センサ３０の計測事象を表すようにセンサ３０ごとに個別に付与される。また、センサ３０の識別情報には、センサ３０を管理する監視装置１０のアドレスが対応付けられる。下位通信路２２と監視装置１０との間に中継用の機器２０が介在する場合には、監視装置１０のアドレスに代えて機器２０のアドレスを用いてもよい。この場合、機器２０は上位通信路２１を通して監視装置１０と通信可能であることが望ましい。

The identification information of the sensors 30 in Tables 2 and 3 is individually assigned to each sensor 30 so as to represent the measurement event of each sensor 30 according to a predetermined naming rule described below. Further, the identification information of the sensor 30 is associated with the address of the monitoring device 10 that manages the sensor 30. When the relay device 20 is interposed between the lower communication path 22 and the monitoring device 10, the address of the device 20 may be used instead of the address of the monitoring device 10. In this case, it is desirable that the device 20 can communicate with the monitoring device 10 through the upper communication path 21.

  The identification information of the sensor 30 includes the name of the load device 32 monitored by the sensor 30, the location monitored by the sensor 30, and the type of measurement information (in many cases, physical quantity) monitored by the sensor 30. That is, the naming rule is determined so that the identification information of the sensor 30 is expressed using a character string for classifying these three types of information and a symbol for combining the character strings.

  For example, in Tables 2 and 3, “AHU” and “HD” are included as character strings representing the names of the load devices 32, the former representing an air conditioner, and the latter representing a heat source device. The character string representing the place includes “1F” and “2F”, and represents the case where the place monitored by the sensor 30 is on the first floor and the second floor, respectively. Furthermore, the character string indicating the type of measurement information includes “QA”, “QW”, “PW”, etc., “QA” represents the heat quantity of air, “QW” represents the heat quantity of water, and “PW” represents the water pressure. Represents. As the symbol for combination, square brackets ([]) in which a character string indicating a place is entered, and an underbar (_) that combines types of measurement information are used. Therefore, the identification information indicating the measurement event of the sensor 30 is expressed in a format of “name of the load device [location] _type of measurement information”.

  Tables 2 and 3 also include a format in which a character string indicating a location is described using lower case letters of the alphabet without including square brackets in the name of the sensor 30. For example, “sup” represents a supply path, and “ret” represents a reflux path.

  Now, the standard judgment formula is | AHU [. *] _ QA-AHU [¥ 1] _QW | ≦ 50. here,[. *] Indicates the installation location of the sensor 30, and for example, “1F” representing the first floor and “2F” representing the second floor are given. This determination formula is based on the amount of heat (AHU [. *] _ QA) supplied to the air conditioner using air as a medium in the air conditioner and the amount of heat (AHU [. *] _ QW) supplied from the heat source unit to the air conditioner using water as a medium. Is relatively small and equal to or less than the threshold value (= 50), it means that there is no abnormality. The event expressed in this judgment formula can be called a general event, and this judgment formula can be used universally regardless of the location, except that the threshold value changes according to the specifications of the air conditioning monitoring system. Is possible. Therefore, as shown in Table 1, it is preferably described by a regular expression.

  In the following, the standard determination formulas as described above are stored in the determination information storage unit 14 of all the monitoring devices 10, and the identification information of various sensors 30 is used as a variable in the determination information storage unit 14. It is assumed that the conversion formula is stored.

  Here, when the air conditioning monitoring system is activated, for example, the identification information of the sensor 30 is transmitted from each monitoring device 10 connected to the higher-level communication path 21 as described above. Therefore, as shown in FIG. 2, the communication unit 12 of the monitoring device 10 receives the identification information of the sensor 30 managed by the other monitoring device 10 from the upper communication path 21 (S11). The identification information of the sensor 30 (that is, the identification information of the measurement event) received from the other monitoring device 10 through the communication unit 12 is stored in the identification information management unit 16. Here, it is determined whether or not the content of the identification information stored in the identification information management unit 16 has changed before and after reception (S12). If there is a change before and after reception (S12: Y), the generation unit 152 of the device operation evaluation unit 15 updates the determination formula using the identification information stored in the identification information management unit 16, and sets the updated determination formula. Saved in the reference storage unit 131.

  In the above-described operation, the determination formula is updated when the identification information of the sensor 30 held by the identification information management unit 16 is changed. However, the measurement information of the sensor 30 managed by the monitoring device 10 is the determination formula. If it conforms to the above, it is not necessary to update the judgment formula. Therefore, after the identification information of the sensor 30 is stored in the identification information management unit 16, the selection unit 151 extracts the standard determination formula stored in the determination information storage unit 14, and the extracted standard determination formula variable May be compared with the identification information of the sensor 30 held in the identification information management unit 16. In this case, the variable of the standard determination formula stored in the determination information storage unit 14 is represented only by the identification information input from the operation unit 17 among the identification information of the sensor 30 held in the identification information management unit 16. If so, the determination formula is stored in the reference storage unit 131 of the determination unit 13.

  On the other hand, when any of the variables of the standard determination formula stored in the determination information storage unit 14 is not represented by the identification information of the sensor 30 input from the operation unit 17, the selection unit 151 sets the variable to another A conversion formula to be replaced with the identification information of the sensor 30 is searched. When the variable included in the conversion formula registered in the determination information storage unit 14 matches the identification information of the sensor 30, the selection unit 151 extracts the conversion formula, and the generation unit 152 converts the conversion formula into the standard determination formula. Is applied to generate a new judgment formula.

  For example, in the example shown in Table 1, the variable AHU_QA [. *] Is included, and the identification information (see Table 2) of the sensor 30 input from the operation unit 17 includes the variable AHU_QA [. *] Is not included. In such a case, AHU_QA [. *] Is used to generate a judgment formula in which the standard judgment formula is rewritten. Therefore, the monitoring apparatus 10 has a judgment formula in which a conversion formula is applied to the standard judgment formula in addition to the standard judgment formula.

  Further, the selection unit 151 searches the identification information of the sensor 30 held by the identification information management unit 16 and tries to extract identification information that matches the variable of the determination formula. When only the identification information of the sensor 30 held by the identification information management unit 16 conforms to the standard determination formula, the generation unit 152 stores the standard determination formula in the reference storage unit 131, and this determination formula is used thereafter. To determine the status of the monitored event. On the other hand, when the identification information that conforms to the standard judgment formula does not exist in the identification information management section 16, it is determined whether or not the identification information held in the identification information management section 16 matches the judgment formula to which the conversion formula is applied. If it matches, the determination unit 13 uses the determination formula.

  As described above, the monitoring device 10 stores the identification information of the sensor 30 included in the system in the identification information management unit 16, and stores the identification information used in the determination unit 13 in the identification information management unit 16. An appropriate determination formula is set with reference to the identified identification information. When the content of the identification information management unit 16 changes before and after the storage when the identification information of the sensor 30 is stored in the identification information management unit 16 by communicating with another monitoring device 10, the device operation evaluation unit 15 is changed. It is preferable to activate and regenerate the determination formula used by the determination unit 131.

  When actually determining the state of the monitoring event using the determination formula, it is necessary to acquire measurement information from another monitoring device 10 using the identification information of the corresponding sensor 30. In this case, in order to acquire measurement information of the sensor 30 managed by the other monitoring device 10, communication with the other monitoring device 10 is necessary. For this reason, when the measurement information of the plurality of sensors 30 is used, a time difference may occur in the measurement information of each sensor 30. Therefore, the determination unit 13 needs to perform determination in consideration of the time difference for acquiring the measurement information.

  As in the present embodiment, measurement information suitable for determination of the determination formula including the measurement information measured by the sensors 30 managed by other monitoring devices 10 in the system is adopted, so that the state of the desired monitoring event can be determined. It can be judged appropriately. In addition, the determination formula and conversion formula set for each monitoring device 10 do not have to match the sensor 30 managed by the monitoring device 10. Can be reduced.

(Embodiment 2)
By adopting the configuration of the first embodiment, it becomes possible to use the measurement information of the sensor 30 managed by each of the plurality of monitoring devices 10 in other monitoring devices 10. That is, even when the monitoring event state cannot be determined only by the measurement information of the sensor 30 managed by each monitoring device 10, the measurement information of the sensor 30 managed by the other monitoring device 10 is diverted or substituted. It becomes possible. As a result, each monitoring device 10 can determine the state even if it is a monitoring event that cannot be determined only by the measurement information of the sensor 30 managed by itself.

  By the way, in the configuration of the first embodiment, in order to collect the identification information of the sensors 30 managed by other monitoring devices 10, it communicates with all the monitoring devices 10 that can communicate through the upper communication path 21, or Communicating with a specific range of monitoring device 10. When the identification information of the sensors 30 is collected from all the monitoring apparatuses 10 that can communicate, when the number of the monitoring apparatuses 10 or the number of the sensors 30 is large (generally, in a building such as a building, several hundred sensors 30 are arranged. ), The number of pieces of identification information stored in the identification information management unit 16 increases.

  Therefore, when the storage capacity is limited as in the monitoring device 10 configured using a built-in microcomputer, it may not be possible to support a large-scale system. In addition, since each monitoring device 10 performs communication to acquire the identification information of the sensor 30 before setting the determination formula used by each monitoring device 10, the load of communication performed through the upper communication path 21 increases. Traffic increases and communication wait time increases. That is, it takes a long time for all the monitoring devices 10 to hold the identification information of the sensors 30 managed by each monitoring device 10. When communication is performed by broadcast when each monitoring device 10 notifies the identification information of the sensor 30, the time is shortened compared with the case of performing communication by peer-to-peer. However, in a large-scale system, the number of monitoring devices 10 is large. Therefore, the communication waiting time is not sufficiently shortened.

  In this embodiment, in order to solve this type of problem, the identification information management unit 16 has a function for generating summary information with a reduced amount of information for the identification information of the sensor 30 managed by each monitoring device 10. Provided. In addition to the function of generating summary information, the identification information management unit 16 has a function of notifying the generated summary information to other monitoring devices 10 and a function of holding summary information acquired from other monitoring devices 10. . The summary information is generated using the identification information of the sensor 30, and information common to a plurality of types of identification information is collected into one type of information. The summary information is collected in the range of one monitoring apparatus 10 (or relay device 20). Therefore, the identification information of the sensor 30 cannot be specified only by the summary information. The identification information management unit 16 generates summary information as auxiliary information that can narrow down the search range for the identification information of the sensor 30 of interest.

  As described in the first embodiment, the identification information of the sensor 30 is configured by combining the name of the device provided with the sensor 30, the location monitored by the sensor 30, and the type of measurement information monitored by the sensor 30. Has been. Further, as shown in Table 4, the identification information of the sensor 30 is associated with the address of the monitoring device 10 that manages the sensor 30. Although it is not essential that the identification information of the sensor 30 is in the above-described format, the identification information of the sensor 30 includes at least information on the location monitored by the sensor 30 and the type of measurement information monitored by the sensor 30. is necessary.

上述のように、センサ３０の識別情報が、複数の情報の組み合わせであることに着目すると、情報の階層性を用いることにより、センサ３０の識別情報のうちの上位階層の情報を用いることが可能である。たとえば、判定式に含まれる変数のうち置換可能である変数は同じ種類の負荷装置３２から得られることが多いから、同じ種類の負荷装置３２はセンサ３０の識別情報の範囲を絞り込むための要約情報に用いることができる。すなわち、負荷装置３２の名称は要約情報（補助情報）として用いることが可能である。また同様に、センサ３０の識別情報のうち負荷装置３２の名称と、センサ３０が監視する場所とを組み合わせることにより、要約情報（補助情報）として用いることも可能である。

As described above, when attention is paid to the fact that the identification information of the sensor 30 is a combination of a plurality of pieces of information, it is possible to use information on the upper layer of the identification information of the sensor 30 by using the hierarchical nature of the information. It is. For example, since variables that can be replaced among variables included in the judgment formula are often obtained from the same type of load device 32, the same type of load device 32 summarizes information for narrowing the range of identification information of the sensor 30. Can be used. That is, the name of the load device 32 can be used as summary information (auxiliary information). Similarly, by combining the name of the load device 32 in the identification information of the sensor 30 and the location monitored by the sensor 30, it can be used as summary information (auxiliary information).

  From the above, the identification information management unit 16 of this embodiment generates one of the two types of summary information described above. Whether the summary information of only the name of the load device 32 or the summary information combining the name of the load device 32 and the monitoring location is used depends on the storage capacity of the hardware resources used by the identification information management unit 16 and the higher-level communication. It is appropriately selected depending on the amount of traffic when communicating through the line 21.

  Since the summary information (auxiliary information) is information for narrowing down the range from which the identification information of the sensor 30 is extracted, it is possible to use a bit array obtained by converting the identification information of the sensor 30 according to a predetermined rule. It is. As this type of bit arrangement, a Bloom filter using a hash value is known. That is, the Bloom filter value can be used as summary information.

  The Bloom filter is a data structure obtained by mapping a hash value obtained by applying a plurality of types of hash functions to a bit array, using a bit array of a predetermined number of bits whose initial value of each bit is 0. Therefore, when the value of the Bloom filter is obtained from the identification information of the sensor 30, the space efficiency can be greatly increased compared to the identification information of the sensor 30, and as a result, the amount of information stored in the identification information management unit 16 can be reduced. .

  The Bloom filter uses a hash value, so even if the original value is different, it may happen to have the same value, but if the original value matches, the value of the corresponding bit position will always be 1. Become. Therefore, when the Bloom filter obtained from the identification information of various sensors 30 is registered in the identification information management unit 16, the identification information of the sensor 30 of interest is retrieved from the identification information management unit 16 as follows. Can do.

  That is, the value of the Bloom filter is obtained for the identification information of the sensor 30 of interest, and collated with the value of the Bloom filter registered in the identification information management unit 16. Here, if the value of the Bloom filter whose bit value corresponding to the bit position corresponding to the bit position corresponding to the identification information management unit 16 is registered, the identification information of the sensor 30 of interest is stored in the system (the range collected by the identification information management unit 16). ) May exist. On the other hand, if even one of the bit values at the corresponding bit position does not become 1, it is understood that the identification information of the sensor 30 of interest does not exist in the system (the range collected by the identification information management unit 16).

  Therefore, as shown in Table 5, if the value of the Bloom filter obtained from the identification information of the sensor 30 is registered in the identification information management unit 16, the selection unit 151 determines whether the desired sensor 30 exists in the system. It is possible to easily determine whether or not. In addition, the address of the monitoring device 10 that manages the sensor 30 is associated with the value of the Bloom filter, and when the corresponding sensor 30 exists in the system, the monitoring device 10 that manages the sensor 30. Can be accessed.

上述したように、識別情報管理部１６が要約情報を保持している場合について、選出部１５１からの問い合わせに対する識別情報管理部１６の動作をまとめると、図３のようになる。すなわち、識別情報管理部１６は、選出部１５１から判定式または変換式の変数（センサ３０の識別情報）の照合が要求されると、変数を保持している識別情報と照合する（Ｓ２１）。監視装置１０が管理しているセンサ３０の識別情報と照合を要求された変数とが一致した場合（Ｓ２１：Ｙ）、選出部１５１には「存在する」を返す（Ｓ２２）。

As described above, when the identification information management unit 16 holds summary information, the operations of the identification information management unit 16 in response to an inquiry from the selection unit 151 are summarized as shown in FIG. In other words, when the selection unit 151 requests collation of a variable of a determination formula or a conversion formula (identification information of the sensor 30), the identification information management unit 16 collates with the identification information holding the variable (S21). When the identification information of the sensor 30 managed by the monitoring device 10 matches the variable requested to be collated (S21: Y), “exists” is returned to the selection unit 151 (S22).

  On the other hand, when there is no identification information that matches the variable for which collation is requested (S21: N), the variable for which collation is requested is collated with the auxiliary information (S23). Since the auxiliary information is held as summary information, it is determined whether or not the summary information exists in the identification information management unit 16. When the summary information exists (S23: Y), the identification information management unit 16 inquires about the presence or absence of the identification information (variable) of the sensor 30 using the address of the monitoring device 10 corresponding to the summary information (S24). When the identification information of the target sensor 30 exists (S25: Y), the identification information of the sensor 30 is added as new identification information to the identification information management unit 16 (S26). "Yes" is returned (S27).

  When there is no corresponding summary information in step S23 (S23: N), or when there is no identification information of the target sensor 30 in another monitoring device 10 in step S25 (S25: N), the selection unit 151 includes “Not present” is returned (S28).

  Through the above processing, even if the determination information cannot be satisfied with the measurement information of the sensor 30 managed by the monitoring device 10, the measurement information of the sensor 30 managed by another monitoring device 10 can be substituted. It becomes possible. If the determination formula cannot be satisfied even if the measurement information of the sensor 30 managed by the other monitoring device 10 is substituted, the determination formula used in the monitoring device 10 is newly created. do it. However, in many cases, it is not necessary to create a new determination formula by the above-described processing, which leads to a reduction in work amount at the time of introduction.

  By the way, when summary information is used, acquisition of measurement information may fail. That is, when the measurement information is inquired to the monitoring device 10 corresponding to the summary information, the corresponding measurement information may not be obtained. If the number of times measurement information cannot be acquired is accumulated in this way, the ratio of the number of failures to the number of inquiries can be obtained for each summary information. This ratio is used as an error rate of the summary information, and when the error rate of the summary information exceeds a prescribed threshold, a configuration is used to instruct the corresponding monitoring device 10 to increase the amount of summary information. It is desirable. If the amount of summary information increases, it is considered that the error rate of summary information is reduced. Therefore, the number of inquiries is reduced as a whole, and traffic is reduced. Other configurations and operations are the same as those in the first embodiment, and thus description thereof is omitted.

(Embodiment 3)
In the above-described embodiment, only the measurement information of the sensor 30 managed by the other monitoring device 10 is substituted or diverted. However, in the present embodiment, the determination set in the determination information storage unit 14 of the other monitoring device 10 is used. The point is that the equation and the conversion equation are shared by the monitoring device 10 in the system.

  Therefore, the determination information storage unit 14 is connected to the upper communication path 21 through the communication unit 12 (not shown). Similar to the operation in which the identification information management unit 16 acquires the identification information of the sensor 30, the communication unit 12 communicates with another monitoring device 10 at an appropriate timing such as at the time of startup as shown in FIG. The determination formula and the conversion formula (determination criteria) are received from the monitoring device 10 (S31). The communication unit 12 stores the received determination formula and conversion formula (determination criterion) in the determination information storage unit 14, and determines whether the determination criterion has changed before and after reception (S32). Here, when the determination criterion stored in the determination information storage unit 14 has changed before and after the determination criterion is received from another monitoring device 10 (S32: Y), the communication unit 12 causes the device operation evaluation unit 15 to change. Start up (S23).

  As described in the first and second embodiments, the device operation evaluation unit 15 selects a determination formula for determining the state of the monitoring event instructed from the operation unit 17 through the input reception unit 18 from the determination information storage unit 14. Replace variables with conversion formulas as necessary.

  In this embodiment, if the monitoring device 10 is added in the system or a judgment formula or conversion formula registered in any of the monitoring devices 10 is added, it is registered in the judgment information storage unit 14 of the existing monitoring device 10. It is possible to increase the types of judgment formulas and conversion formulas to be performed. Therefore, at the initial stage of system introduction, even when there is a shortage of judgment formulas and conversion formulas, or even when a monitoring event is changed due to the introduction of a new monitoring device 10 or load device 32, the judgment formulas or conversion formulas are used. It is not necessary to perform the operation for rewriting all the monitoring devices 10, which leads to a reduction in the amount of work.

  By the way, in the monitoring device 10 in the system, when the measurement information of the sensor 30 managed by the other monitoring device 10 is substituted or diverted and the determination formula or the conversion formula can be shared, the status of the same monitoring event is determined. There is a possibility that different judgment formulas are set. In this case, the fewer the variables included in the determination formula, the shorter the time required to collect measurement information from the sensor 30 and the shorter the time from when a monitoring event occurs until the determination result is obtained. . On the other hand, depending on the contents of the monitoring event, the accuracy of the determination may increase as the number of variables included in the determination formula increases.

  Therefore, when a determination formula for determining the state of the same monitoring event is obtained, the determination formula is selected according to the operation mode designated by the user using the operation unit 17. The operation modes designated from the operation unit 17 are a speed priority mode and an accuracy priority mode. When the speed priority mode is selected, a determination formula that minimizes the variable is selected, and the accuracy priority mode is selected. Is selected, the judgment formula that maximizes the variable is selected. Note that a custom mode in which the user instructs a desired determination expression through the operation unit 17 may be provided in preparation for the case where three or more determination expressions are generated for the same monitoring event.

  The above operation is an example in the case where determination formulas including different variables are set for the same monitoring event, but the same determination formula may be set in different monitoring apparatuses 10. In this case, there arises a disadvantage that competition or collision occurs in the monitoring event in different monitoring devices 10. Therefore, in order to avoid such an inconvenience, it is preferable to set a priority order when setting the determination formula. For example, when the same determination formula is set, the number of measurement information of the sensor 30 that is substituted or diverted from another monitoring device 10 is compared, and the number of measurement information received from the other monitoring device 10 is smaller. It is preferable to select the determination formula under a priority condition that priority is given to the determination formula. When this priority condition is used, the frequency of acquiring the measurement information of the sensor 30 managed by the other monitoring device 10 is reduced. As a result, when the measurement information of the sensor 30 is exchanged between the monitoring devices 10. Communication volume is reduced.

  Now, in the two monitoring devices 10, the identification information of the sensor 30 and the address of the monitoring device 10 that acquires the measurement information of the sensor 30 are associated as shown in Tables 6 and 7, and the generation unit 152 generates In the determination formula, the four types of measurement information shown in the table are used as variables.

表６と表７とにおいて「ローカル」は、生成部１５２を備える監視装置１０が管理しているセンサ３０から計測情報を取得することを意味する。また、監視装置１０のアドレスが「ローカル」ではない場合は、他の監視装置１０が管理しているセンサ３０から計測情報を取得することを意味する。

In Tables 6 and 7, “local” means that measurement information is acquired from the sensor 30 managed by the monitoring apparatus 10 including the generation unit 152. Further, when the address of the monitoring device 10 is not “local”, it means that measurement information is acquired from the sensor 30 managed by another monitoring device 10.

  Therefore, for the four pieces of monitoring information used in the determination formula, the monitoring device 10 having the information shown in Table 6 receives one piece of measurement information from the other monitoring devices 10, and the monitoring device 10 having the information shown in Table 7 Three pieces of measurement information are received from other monitoring devices 10. In such a case, the monitoring device 10 having the information shown in Table 6 is selected.

  However, the number of pieces of measurement information received from other monitoring devices 10 may be the same. Therefore, each monitoring device 10 is provided with a function for notifying other monitoring terminals 10 of the setting of the determination formula together with the determination formula when the generation unit 152 sets the determination formula, and the generation unit of the monitoring terminal 10 that has received the determination formula Preferably, 152 prohibits the generation of the same judgment formula as that of other monitoring apparatuses 10. In other words, the determination formulas are employed in the order of generation in the system, and the same determination formula is prevented from being generated in the system.

  Other configurations and operations of this embodiment are the same as those of Embodiments 1 and 2, and this embodiment is preferably used in combination with the other embodiments described above.

(Embodiment 4)
In the third embodiment, the determination formula is set assuming that the measurement information measured by the sensor 30 is always correct. However, if there are a large number of sensors 30 in the system, correct measurement information is obtained from all the sensors 30. It may not be obtained. In particular, since the measurement information of the sensor 30 may change over time, it is necessary to regularly monitor the measurement information of the sensor 30 as well as regular inspections.

  Therefore, in the present embodiment, a function for evaluating measurement information for each sensor 30 is provided in the acquisition unit 11 of the monitoring device 10. That is, the acquisition unit 11 has a function of storing a normal range for the measurement information, and storing a ratio of time when the measurement information obtained from the sensor 30 deviates from the normal range as an evaluation value. For example, if the time when the measurement information deviates from the normal range is 3 hours out of 24 hours, the ratio of the measurement information within the normal range for this sensor 30 is 87.5%, and this value is used as the evaluation value. . An evaluation value is calculated | required in appropriate periods, such as every day, every week, and every month.

  The evaluation value of the sensor 30 obtained as described above corresponds to the reliability of the measurement information obtained from the sensor 30. Therefore, when a plurality of determination formulas can be selected for the same monitoring event, the determination formula is updated as needed, and the monitoring event is determined using the highly reliable sensor 30, thereby monitoring even if the sensor 30 deteriorates. The accuracy of event determination can be maintained. That is, when updating the determination formula, the evaluation value related to the measurement information of the sensor 30 is used, and a determination formula having a high evaluation value of the measurement information corresponding to the variable included in the determination formula is preferentially selected.

  Here, in evaluating the determination formula using the evaluation value of the measurement information, the average value is obtained for the evaluation value of the measurement information corresponding to the variable included in the determination formula, and the maximum value and the minimum value of the evaluation value are calculated. Find the difference. In selecting a judgment formula, it is possible to select a judgment formula that satisfies the condition that the minimum value of the evaluation values included in the judgment formula is equal to or greater than a prescribed threshold and satisfies the condition that the average value of the evaluation values is maximum. preferable. The former condition is set in order to maintain the reliability of the determination result of the determination formula. In other words, if determination is performed using a determination formula that includes measurement information with low reliability, the reliability of the determination result is reduced regardless of the reliability of other measurement information, so measurement information that provides reliability above the threshold The condition is set so that the determination is performed using only In addition, the latter condition increases the reliability of the determination result based on the determination formula.

  Not only when selecting a judgment formula from a plurality of judgment formulas as described above, but also when the measurement information assigned to the variables included in the same judgment formula is replaceable as in the first embodiment, the replaceable measurement. It is desirable to select the one with higher reliability of information. For example, measurement information obtained from two different sensors 30 can be adopted as a variable in the determination formula, and the evaluation value of the measurement information obtained from one sensor 30 is 100%, and the other Assume that the evaluation value of the measurement information obtained from the sensor 30 is 10%. In this case, measurement information obtained from the one sensor 30 is adopted.

  In the above-described operation, the determination formula used by the determination unit 13 is updated at any time. However, the determination formula is updated when the system is started up, and when a new monitoring device 10 joins the system, the user can update the determination formula. It may be when instructed.

  In the above-described operation, the ratio of the time when the measurement information deviates from the normal range is used as the evaluation value, and the determination formula is selected using the evaluation value when the determination formula is updated. However, the measurement information deviates from the normal state. The determination formula may be changed when the time to be continued until the specified determination time is reached. In other words, the measurement information corresponding to the variable included in the judgment formula in use is constantly monitored whether or not it deviates from the normal range, and when deviating from the normal range, the time for which the deviated state continues is counted. When this time reaches the determination time, the determination formula is updated.

  When updating the determination formula, the selection unit 151 first sets a flag in the corresponding identification information so that the identification information of the sensor 30 stored in the identification information management unit 16 is not adopted in the determination formula, The corresponding identification information is deleted from the identification information management unit 16. When the flag is set, when the measurement information of the sensor 30 is restored by adjustment or replacement of the sensor 30, the user intentionally releases the flag using the operation unit 17 to restore the original operation. It is possible.

  As described above, when the measurement information of one of the sensors 30 deviates from the normal range and the time deviating from the normal range reaches the determination time, the determination formula stored in the reference storage unit 131 is updated. is there. With this operation, the determination unit 13 can determine the state of the monitoring event using only normal measurement information. That is, the determination accuracy of the state of the monitoring event can be maintained. Note that the evaluation value described above may be used as a criterion for selection of the judgment formula when the judgment formula is updated.

  Other configurations and operations of this embodiment are the same as those of the first to third embodiments, and this embodiment can be used in combination with the other embodiments described above.

DESCRIPTION OF SYMBOLS 10 Monitoring apparatus 11 Acquisition part 12 Communication part 13 Determination part 14 Determination information memory | storage part 15 Apparatus operation | movement evaluation part 16 Identification information management part 21 Upper-order communication path 22 Lower-order communication path 30 Sensor (measuring means)

Claims (11)

  An acquisition unit that acquires measurement information related to a prescribed monitoring event from a measurement unit; a determination unit that determines the state of the monitoring event by applying the measurement information acquired by the acquisition unit to a determination formula; and another device A communication unit that communicates with and communicates with the other device the type of the measurement information measured by the measurement unit, and the other device through the type of the measurement information that the measurement unit measures and the communication unit. An identification information management unit that holds the type of measurement information that can be acquired, and a device operation evaluation unit that extracts the measurement information that conforms to the determination formula from the measurement information stored in the identification information management unit The identification information management unit obtains the measurement information from the other device through the communication unit when the determination formula used for determination in the determination unit includes the measurement information acquired from the other device. Obtained to monitor device characterized by delivering to the evaluation unit.   The communication unit transmits summary information collected together with one type of information common to a plurality of types of measurement information when notifying the type of the measurement information to the other device together with the address of the other device, and the identification information When the management unit receives the summary information from the other device, the management unit holds the summary information, and when the determination formula used for determination in the determination unit includes the measurement information acquired from the other device, the summary information The monitoring apparatus according to claim 1, wherein the required measurement information is requested from the other apparatus with reference to the address.   The monitoring apparatus according to claim 2, wherein the communication unit uses a Bloom filter value as the summary information.   A determination information storage unit that stores the determination formula for determining the state of the monitoring event, and the determination information storage unit includes a conversion formula that replaces the measurement information included in the determination formula with another measurement information; When the monitoring information included in the determination formula is not stored in the identification information management unit, the device operation evaluation unit uses the conversion formula stored in the determination information storage unit. The monitoring apparatus according to claim 1, wherein the determination formula is updated.   The communication unit exchanges the determination formula and the conversion formula stored in the determination information storage unit with the other device, and the determination formula and the conversion formula received from the other device are the determination information. The monitoring apparatus according to claim 4, wherein, when not stored in the storage unit, the received determination formula and the conversion formula are added.   The device operation evaluation unit selects whether or not to adopt a determination formula for the monitoring event according to a specified priority condition when the monitoring event is the same as the other device. 6. The monitoring device according to any one of 5 above.   The device operation evaluation unit employs a determination formula for the monitoring event, with the priority condition being that the number of pieces of the measurement information acquired from the other device is minimum for the measurement information used in the determination formula. The monitoring device according to claim 6.   The acquisition unit evaluates whether or not the measurement information is normal for each of the measurement means, and obtains a ratio of a period in which the measurement information is normal in a predetermined period as an index of reliability. 6. The monitoring according to claim 1, wherein when the monitoring event is the same as that of the other device, the measurement information having high reliability indicated by the index in the determination formula is used. apparatus.   The acquisition unit evaluates whether or not the measurement information is normal for each measurement unit, and the device operation evaluation unit adopts the determination formula using the measurement information when the measurement information becomes abnormal. The monitoring apparatus according to claim 1, wherein the determination formula is updated without any change.   A monitoring system comprising a plurality of monitoring devices according to any one of claims 1 to 9, wherein the measuring means is managed for each of the plurality of monitoring devices, and the plurality of the monitoring devices Monitoring system characterized by communicating with each other through a communication path.   An acquisition unit that acquires measurement information related to a prescribed monitoring event from a measurement unit; and a determination unit that determines a state of the monitoring event by applying the measurement information acquired by the acquisition unit to a determination formula; A communication unit that communicates with another device and the type of the measurement information measured by the measurement unit is exchanged with the other device, and a type of the measurement information measured by the measurement unit and the communication unit An identification information management unit that holds the types of measurement information that can be acquired from other devices, and an appliance operation evaluation unit that extracts the measurement information that conforms to the determination formula from the measurement information stored in the identification information management unit And the identification information management unit determines whether the other device through the communication unit when the determination formula used for determination in the determination unit includes the measurement information acquired from the other device. Program to function as a monitoring device to be passed to the decision unit acquires the measurement information.

Images