TW202232270A - Monitoring system,monitoring device and method for monitoring machinery - Google Patents

Abstract

This monitoring system comprises: a monitoring device that detects the value of a monitored item of a monitored machine; and a higher-level apparatus. The monitoring device can store inherent information including a threshold value for the monitored item, said threshold value serving as a trigger to start a prescribed action. The higher-level apparatus is provided separated from the monitored machine, and collects monitoring-related information from the monitoring device, said monitoring-related information including the inherent information and detection information. Additionally, the higher-level apparatus appropriately collects the monitoring-related information from the monitoring device, and saves the inherent information if the same is not yet saved. The higher-level apparatus compares installation condition information collected from the monitoring device and saved installation condition information, and if there is a difference, transmits response information to the monitoring device, said response information at least including a portion of the threshold value or values of the saved inherent information, said portion having not been included in the inherent information collected from the monitoring device. Among the threshold value or values received from the higher-level apparatus, the monitoring device stores at least the portion that is not yet stored.

Description

Monitoring system, monitoring device, and machine monitoring method

This case relates to a monitoring system, a monitoring device, and a machine monitoring method, and in particular, a monitoring system, a monitoring device, and a machine monitoring method that simplify the setting operation of the threshold value of the monitoring device.

For example, in a pump device that transfers fluid, generally, a sensor attached to the pump detects state quantities such as vibration, temperature, and flow rate. In the case of the pump system with the pump and the sensor as shown above, there are the following. This pump system includes, in addition to a pump and a sensor, an electric motor having a rotating shaft connected to a main shaft of the pump, and a control device provided integrally with the electric motor. In the control device, the threshold value of the measured value of the sensor and the inspection item are stored in association with each other. When the measured value of the sensor exceeds the corresponding threshold value, the control device notifies the external terminal device to the external terminal device. Corresponding inspection items (see, for example, Japanese Patent Laid-Open No. 2017-180349).

[The problem to be solved by the invention]

If the threshold value of the measured value of the sensor and the inspection item are related to the control device and the monitoring target machine such as the pump are independent, it is suitable that a plurality of monitoring target machines can be controlled by one control device. . There are many cases where the threshold value of the measured value of the sensor is higher than the threshold value, and even if the monitoring target machine to which the sensor is installed is of the same type, it will vary depending on the installation environment or the operating condition of the monitoring target machine. Not many. On the other hand, a sensor generally has a shorter lifespan than a monitoring target machine, and therefore tends to be replaced more frequently than a monitoring target machine. If the sensor is to be mechanically replaced for the monitoring object that is to be used continuously, the threshold value must be reset. However, since there are many types of threshold value, it needs to be reset every time it is replaced, which is labor-intensive.

In view of the above-mentioned problems, the present application provides a monitoring system, a monitoring device, and a machine monitoring method which can simplify the setting operation of the threshold value of a monitoring device such as a sensor. [Means to solve the problem]

The monitoring system according to the first aspect is provided with: a monitoring device which detects the value of the monitoring target item of the monitoring target machine, and can memorize information including the installation state of the monitoring device and the trigger for the occurrence of the predetermined action. The unique information of the threshold value of the value of the monitoring object item; and the host device, which is collected by the monitoring device, including: the unique information and the monitoring device. Detection of the value of the monitoring object item Information monitoring-related information is located at a position away from the monitoring target machine, and the upper-level device is configured such that the monitoring-related information is collected by the monitoring device in a predetermined sequence, and if the information collected by the monitoring device is If the unique information is not stored in the monitoring-related information, at least the unique information is stored, and if the information on the installation status among the inherent information collected by the monitoring device is compared with the information on the installation status stored If there is a difference after comparison, it is determined that the monitoring device has been replaced, and when it is determined that the monitoring device has been replaced, the threshold value including at least the stored inherent information is determined by the replaced monitoring device. The collected reply information of the threshold value of the part not included in the inherent information is sent to the monitoring device, and the monitoring device is configured to memorize the threshold value received by the upper device that is not at least not included in the threshold value. Threshold value for the portion of memory.

If configured as described above, if the monitoring device does not include the threshold value, the threshold value stored in the host device can be included in the reply information and sent to the monitoring device, and when the monitoring device is replaced, it is possible to simplify the routine The relatively complicated threshold value setting operation for the monitoring device.

In the monitoring system of the second aspect, the monitoring system of the first aspect may further include a plurality of the monitoring devices, and the upper device may be configured to store the unique information individually for each of the monitoring devices. The judgment of whether the monitoring device has been replaced, and the sending of the reply information to the monitoring device.

If configured as described above, even when there are plural monitoring devices and the replacement timing is different, the threshold value can be appropriately connected.

In the monitoring system of the third aspect, the monitoring system of the first aspect or the second aspect may include a plurality of the monitoring object machines on which the monitoring device is mounted, and the upper-level equipment may be configured to perform the monitoring. Exchange of the monitoring-related information with each of the monitoring devices installed in the plurality of monitoring-target machines.

With the configuration as described above, it is possible to provide a monitoring system in which each monitoring device is set to suit the characteristics of the machine to be monitored.

In the monitoring system of the fourth aspect, in the monitoring system of any one of the first to third aspects described above, the upper device may be configured to be stored as a part of the inherent information. The threshold value is optimized based on the detection information collected by the monitoring device using a machine learning model, and the optimized threshold value is included in the reply information and sent to the monitoring device.

If configured as described above, since the threshold value is optimized using the machine learning model, a more accurate threshold value can be set.

Regarding the monitoring system of the fifth aspect, in the monitoring system of any one of the first aspect to the fourth aspect, the monitoring target machine may be a pump, a compressor, a turbine, a fan, a blower, One or more of a refrigerator and a cooling tower.

With the configuration as described above, it is possible to simplify the setting operation of the threshold value of the monitoring device for various monitoring target machines.

The monitoring device of the sixth aspect monitors a monitoring object machine, and includes a detection unit that detects a value of a monitoring object item of the monitoring object machine, and an installation state memory unit that memorizes the installation state of the monitoring device. information; a threshold value storage unit for storing part or all of the threshold value of the value of the monitoring target item that triggers the occurrence of a predetermined action after the monitoring device is installed in the monitoring target machine; and a communication unit, It transmits and receives information to a higher-level device located at a position far from the machine to be monitored.

According to the configuration as described above, since the threshold value memory unit is provided, when the threshold value exceeds the threshold value, it can be quickly detected, and a predetermined operation can be quickly generated.

A machine monitoring method according to a seventh aspect includes a collection step of collecting monitoring-related information transmitted from a monitoring device that detects a value of a monitoring target item of a monitoring target machine, to a high-level device installed at a position away from the monitoring target machine. , the collection process of collecting at a predetermined time sequence, the monitoring-related information includes detection information about the value of the monitoring object item detected by the monitoring device, and unique information, and the unique information includes: the setting of the monitoring device information on the state, and threshold value of the value of the monitoring object item that triggers the occurrence of a predetermined action; the storage step is a process of saving the above-mentioned monitoring-related information collected by the above-mentioned monitoring device if the above-mentioned monitoring-related information is not stored. In the case of the inherent information, at least the aforementioned inherent information is stored; the comparison process is that the upper machine compares the aforementioned information of the aforementioned setting state among the aforementioned inherent information collected by the aforementioned monitoring device with the aforementioned stored aforementioned information of the aforementioned setting status; The judging process is the result of the above-mentioned comparison performed by the above-mentioned upper machine in the above-mentioned comparison process. If there is a difference, it is judged that the above-mentioned monitoring device has been replaced; the replying process is the above-mentioned upper machine in the above-mentioned judgment process. Judging the above-mentioned When the monitoring device has been replaced, at least the response information of the threshold value of the part of the inherent information collected by the replaced monitoring device among the threshold values of the stored inherent information will be included, Replying to the monitoring device; and a memory updating process, wherein the monitoring device memorizes the threshold value of at least the unremembered part of the threshold value received by the upper device.

If configured as described above, if the monitoring device does not include the threshold value, the threshold value stored in the host device can be included in the reply information and sent to the monitoring device, and when the monitoring device is replaced, it is possible to simplify the routine The relatively complicated threshold value setting operation for the monitoring device. [Effect of invention]

According to the present disclosure, when the monitoring device is replaced, it is possible to simplify the setting operation of the monitoring device, which is often relatively complicated, for the threshold value.

This application is based on Japanese Patent Application No. 2020-172501 filed on October 13, 2020, the content of which forms a part of the content of this application. Furthermore, the present invention should be more fully understood from the following detailed description. The further application scope of the present invention should be apparent from the following detailed description. However, the detailed description and specific examples are preferred embodiments of the present invention, and are described only for the purpose of description. For those skilled in the art, various modifications and changes within the spirit and scope of the present invention will be apparent from the detailed description. The applicant does not intend to contribute any of the described embodiments to the public, and among the disclosed changes and alternatives, what may not be included in the scope of the patent application in the context of the disclosure are also regarded as part of the invention under the doctrine of equality.

Embodiments will be described below with reference to the drawings. However, the same or similar symbols are attached to the same or corresponding members in the respective drawings, and repeated descriptions are omitted.

First, with reference to FIG. 1, the monitoring system 1 of this embodiment is demonstrated. FIG. 1 is a schematic configuration diagram of a monitoring system 1 . The monitoring system 1 is a system that monitors the operating state of the pump 19 as the monitoring target machine. Typically, the monitoring system 1 is a system for performing maintenance before a malfunction occurs in the pumps 19 by remotely monitoring one or a plurality of inspection items for a plurality of pumps 19 . The monitoring system 1 is configured to include the sensor 10 attached to the pump 19 and the host device 20 .

The pump 19 to be monitored is installed in the management target area. The management target area is a place where the pump 19 in which the sensor 10 that should acquire the value (state quantity) of the monitoring target item is installed is arranged, for example, in a factory or a machine room of an office building. FIG. 1 shows an example in which the pump 19A and the pump 19B each have a plurality of sensors 10 . In the example shown in FIG. 1, the pump 19A has the sensor 10A attached to the motor, the sensor 10B attached to the stand, and the sensor 10C attached to the bearing. The pump 19B has the sensor 10D attached to the bearing and the sensor 10E attached to the pump casing. Each of the sensors 10A, 10B, 10C, 10D, and 10E respectively detects the independent state quantities of the parts to be installed, but when describing the common properties, the system is called "sensor 10". Similarly, each of the pumps 19A and 19B each performs an independent function, but the system is referred to as "pump 19" when describing the common properties. When the sensor 10 is installed in the above-mentioned position, if the part to be installed is a non-magnetic body or a surface with a shape that is not suitable for the installation surface of the sensor 10, an adhesive can also be used, if it is easy to externally sense From the standpoint of the device 10, it is also possible to install with a magnet.

In the example shown in FIG. 1, the pump 19A has three sensors 10A, 10B, and 10C, and the pump 19B has two sensors 10D, 10E. However, the number of the sensors 10 installed in the pump 19A and/or the pump 19B can be increased or decreased as needed, and the number of the pumps 19 can also be increased or decreased as needed. In an aspect in which the monitoring system 1 includes a plurality of sensors 10, typically, a case where a plurality of pumps 19 provided with a plurality of sensors 10 are provided is exemplified. However, a plurality of pumps 19 in which one sensor 10 is provided in one unit may be provided. Alternatively, one pump 19 provided with a plurality of sensors 10 may be provided. Alternatively, a plurality of pumps 19 provided with a plurality of sensors 10 may be provided in combination with one pump 19 provided with a single sensor 10 . Next, each constituent element of the monitoring system 1 will be described.

The sensor 10 detects the value (typically, a physical quantity) of the monitoring target item of the pump 19 , and corresponds to a monitoring device. The sensor 10 is configured to detect whether or not the pump 19 to be monitored is abnormal by monitoring whether the value of the detected item to be monitored exceeds a threshold value. In addition, the sensor 10 is configured to be able to communicate with the host device 20 and to exchange information (data) with the host device 20 . Typically, the sensor 10 is configured to operate with electricity. Typically, the sensor 10 is configured to operate by receiving a part of the electric power (usually electric power from a commercial power source) supplied to the pump 19 . However, a battery may also be installed in parallel to assist in the event of a commercial power failure. Alternatively, it may be configured to operate only with a battery without using a commercial power source.

The schematic configuration of the sensor 10 in the present embodiment will be described using the schematic configuration diagram of the sensor 10 and the host device 20 shown in FIG. 2 . The sensor 10 includes a detection unit 11 , an installation state memory unit 12 , a threshold value memory unit 13 , and a communication unit 14 . The detection part 11 detects the value (state quantity) of the monitoring object item of the part in which the pump 19 of the sensor 10 is attached. Vibration, temperature, pressure, current, voltage, etc. are mentioned as the monitoring object item detected by the detection part 11 . Some of the sensors 10 are configured so that one sensor 10 detects a plurality of types of monitoring target items, and some are configured so that one sensor 10 detects one type of monitoring target items. In this embodiment, the sensor 10A is configured to detect current, the sensor 10B to detect vibration, temperature, and leakage, the sensors 10C and 10D to be the same as the sensor 10B, and the sensor 10E to detect pressure.

The installation state memory unit 12 is a part that stores information on the installation state of the sensor 10 . The information in the set state includes a unique address identifying the sensor 10 . The unique address is an address assigned to each sensor 10 , and can be distinguished from other sensors 10 other than the sensor 10 . If a specific example is given, the sensors 10A, 10B, 10C, 10D, and 10E are respectively assigned with mutually different unique addresses. In addition, the information of the installation state includes, in addition to the unique address, one or more of the unique address of the product, model information, installation location, GPS information, radio wave strength, and other required information as necessary. The product-specific address is an address that specifies the type of the sensor 10, and if the type is the same (typically, the same product), the same address is assigned. That is, the product-specific address may be assigned the same one to a plurality of sensors 10 . If a specific example is given, the sensors 10B, 10C, and 10D are all assigned the same product-specific address as a product for detecting vibrations, etc., but the product-specific address is assigned to the sensor as a current product. 10A or the sensor 10E which is a product for pressure is different. The model information is information on the type of the monitoring target machine to which the sensor 10 is mounted, and in this embodiment, it is a pump. The installation position includes an installation location (where it is installed in the management target area) and/or an installation location (where it is installed in the pump 19 ). The information of the installation location can also be estimated from GPS information. The radio wave strength is information on the strength of radio waves when the sensor 10 communicates with the host device 20 or when it communicates with a portable terminal device (smartphone or the like) for reference by a patrol supervisor. Typically, the intrinsic address and the product intrinsic address are memorized when the sensor 10 is manufactured. Model information, installation location, GPS information, radio wave strength, and other required information are usually memorized after the fact (after the sensor 10 is manufactured, typically after being placed at the desired location) as needed. Typically, this type of information in hindsight can be erased by the administrator's instruction (by instruction through the input of the component, etc.).

The threshold value storage unit 13 is a part that stores the threshold value of the value of the monitoring target item of the pump 19 . The threshold value is used for judging the state of the pump 19 as the monitoring target machine, and is a value of the monitoring target item that triggers the occurrence of a predetermined operation in relation to the pump 19 . The predetermined action is typically an alarm, but may be, for example, a change in operating conditions such as decelerating the pump 19 . The threshold value is set for each monitoring target item. Therefore, there are cases where one threshold value is set for one sensor 10, and there are also cases where a plurality of threshold values are set for one sensor. In addition, the same type of sensor 10 may be attached to a plurality of pumps 19 of the same model, and the setting of the threshold value may be different depending on the installation environment and operating conditions of the pumps 19 . That is, the set threshold value is a unique value for each sensor 10 . The threshold value set as described above is stored in the threshold value storage unit 13 . Typically, the threshold value memorized in the threshold value storage unit 13 can be erased by an instruction from the administrator (instruction by input through a component, etc.). The threshold value may be determined with a relatively margin in consideration of the characteristics and the like of the item to be monitored at the time of initial setting. Afterwards, it can also be appropriately updated according to the usage status.

The communication unit 14 is a portion that includes components required for wireless communication with the host device 20 such as an antenna. The communication unit 14 is configured to be capable of exchanging data with each of the detection unit 11 , the installation state memory unit 12 , and the threshold value memory unit 13 . Next, the communication unit 14 is configured so that the detection unit 11 , the installation state memory unit 12 , and the threshold value memory unit 13 can receive the data transmitted to the upper device 20 . Moreover, the communication part 14 is comprised so that the data received by the upper apparatus 20 may be received/received by the installation state memory part 12 and/or the threshold value memory part 13. Here, the information (data) transmitted from the sensor 10 to the upper device 20 is collectively referred to as monitoring-related information. Monitoring-related information includes detection information and inherent information. The detection information is information on the value of the monitoring target item detected by the detection unit 11 . The unique information includes information on the installation state of the sensor 10 stored in the installation state storage unit 12 and the threshold value stored in the threshold value storage unit 13 .

The sensor 10 is provided with the detection unit 11 , the setting state memory unit 12 , the threshold value memory unit 13 , and the communication unit 14 as described above. In FIG. 2 , for convenience of description, these are described from the viewpoint of functions. differentiated display. However, these parts 11 , 12 , 13 , 14 can also be formed as a part of the sensor 10 to be integrally formed. In addition, the detection unit 11 , the setting state memory unit 12 , the threshold value memory unit 13 , and the communication unit 14 are shown as being arranged close to each other in FIG. 2 , but one or a plurality of these units may be physically constituted by distinction.

The host device 20 is a device that collects monitoring-related information sent from the sensor 10 . The host device 20 is installed at a position away from the pump 19 to which the sensor 10 is mounted. Typically, the host device 20 is installed outside the management target area where the pump 19 is installed. The host device 20 may be constituted by a single device depending on the situation, or may be constituted by a plurality of devices connected by a network. Specific examples of those constituting the host device 20 include repeaters such as a gateway (GateWay), a server (computer) existing in the same local area network as the sensor 10, a network or a public network. Connected servers (including the cloud), etc. The repeater can also be connected with edge units. In addition, a smartphone, a tablet-type portable terminal, a laptop computer (notebook personal computer), or the like may constitute a part or all of the host device 20 . As shown in FIG. 2 , the host device 20 includes a communication unit 21 , a storage unit 22 , a determination unit 23 , and an optimization unit 24 . In FIG. 2 , these parts 21 , 22 , 23 , and 24 are shown separately from the functional point of view for convenience of description, but they can also be formed as a part of the upper device 20 to be integrally formed. Alternatively, one or a plurality of the parts 21 , 22 , 23 , and 24 may be physically separated and constituted, and may be installed at a distant place.

The communication unit 21 is a portion that includes components required for wireless communication with the sensor 10 such as an antenna. The communication unit 21 may have components necessary for wireless communication or wired communication with external devices that do not constitute the host device 20 (eg, a portable terminal only for status reference). The communication unit 21 is configured to send and receive the monitoring-related information received by the sensor 10 to a desired location in the host device 20 , and to transmit the information (reply) to the sensor 10 from the host device 20 . required parts are collected. The communication unit 21 is configured to receive monitoring-related information from the sensor 10 at a predetermined timing. The predetermined timing can be periodic (eg, every few seconds or several minutes at predetermined intervals), or it can be continuous. The communication unit 21 receives monitoring-related information from the sensor 10 at a predetermined timing, whereby the upper device 20 can collect the monitoring-related information from the sensor 10 . The data returned by the upper device 20 to the sensor 10 includes the reply information. Threshold values may be included in the reply information system.

The storage unit 22 is a part that stores unique information among the monitoring-related information received by the sensor 10 . The storage unit 22 is configured to store unique information for each sensor 10 when the host device 20 communicates with the plurality of sensors 10 . Therefore, in the present embodiment, the storage unit 22 stores the unique information of the sensor 10A, the unique information of the sensor 10B, the unique information of the sensor 10C, the unique information of the sensor 10D, the unique information of the sensor 10D, and the unique information of the sensor 10D. unique information of the device 10E. Among them, the unique information stored in the storage unit 22 is related to the sensor 10 that is permitted (authenticated) to communicate with the upper device 20 . The authentication of the host device 20 and the sensor 10 may be performed by, for example, detecting the radio wave strength when the two communicate with each other, and using a portable terminal possessed by a supervisor who can enter the management target area. The storage unit 22 can delete the stored information, typically by an administrator's instruction (instructions by input through components, etc.), partially (for example, for each sensor) or collectively.

The determination unit 23 compares the information of the installation state among the inherent information received by the sensor 10 with the information of the installation state stored in the storage unit 22 to determine whether the sensor 10 has been replaced. The determination unit 23 compares the information of the setting state received by the sensor 10 with the information of the setting state stored in the storage unit 22 , and if there is a difference, it is determined that the sensor 10 has been replaced. In particular, if the intrinsic addresses are different by comparing the two, it can be determined that the sensor 10 has been replaced. If the sensor 10 has been replaced, there are many cases where the threshold value is missing (typically due to the absence of a threshold value that is not set), and at this point, there is a difference in the inherent information of whether the threshold value is present or not. . Before the replaced sensor 10 is attached to the pump 19, a part of the threshold value may be stored in the threshold value memory unit 13 in advance. Among them, when comparing the two, there is no difference in the original address, but if other information of the setting state changes, such as GPS information or installation location, there is a difference, it can be judged that the sensor 10 is moved to another place use. If it is determined that the sensor 10 has been relocated, as described above, since the set threshold value is a unique value corresponding to the installation environment or operating conditions, the process is performed in the same manner as when the sensor 10 is newly installed. That is, the situation in which the sensor 10 has been relocated (including the situation in which it has been relocated together with the pump 19 ) is set not to be included in the situation in which the sensor 10 has been replaced. The processing when the sensor 10 has been relocated will be described later.

The optimization unit 24 is a portion that achieves the optimization of the threshold value stored in the storage unit 22 . The optimization unit 24 is constructed with a program that can execute the machine learning model. The optimization part 24 is comprised so that the data of the monitoring target item collected by the plurality of sensors 10 may be machine-learned, and the threshold value with higher precision may be derived. The optimization unit 24 may be arranged in the local area network, but may also be arranged in the cloud. When the optimization unit 24 is arranged on the cloud, it becomes easy to use the machine learning model updated in time. Among them, when using the machine learning model, the accuracy of the threshold value may not be sufficient until the data of the monitoring target item is collected to a certain level (eg, to a degree where the type or correlation of the data can be roughly estimated). Taking this point into consideration, the optimization unit 24 is configured to perform optimization using the machine learning model without performing optimization using the machine learning model when the threshold value is initially set, and after the data of the monitoring target item is collected to a certain level.

The sensor 10 and the host device 20 configured as described above are configured to be capable of wireless communication with each other as described above. Typically, the means of wireless communication use communication means of international standards. In terms of communication means of international standards, there are IEEE802.15.4, IEEE802.15.1, IEEE802.15.11a, 11b, 11g, 11n, 11ac, 11ad, ISO/IEC14513-3-10, IEEE802.15.4g and other methods. In addition, Bluetooth (registered trademark), Bluetooth Low Energy, Wi-Fi, ZigBee (registered trademark), Sub-GHz, EnOcean (registered trademark), and the like can also be used.

When constructing the monitoring system 1, the sensor 10 is attached to the pump 19 newly installed in the management target area, and/or from the pump 19 originally installed in the management target area. The sensors 10 are installed in a required number at locations where the monitoring target item of the pump 19 can be detected. In the sensor 10 newly installed in the pump 19, information about the sensor 10 itself, that is, the unique address and the product unique address are usually memorized in advance. However, the new sensor 10 usually does not store model information, installation location, GPS information, radio wave intensity, threshold value, etc., which are not clear at the time of manufacture. The information that is not memorized is inputted by a tablet-type portable terminal or the like that is authenticated to be connected to the sensor 10 , and then forwarded to the sensor 10 , so that it can be memorized in the sensor 10 . In addition, when the sensor 10 is relocated, typically, the administrator will memorize the type of information (model information, installation location, GPS information, radio wave strength, etc.) that is memorized later in the installation state memory portion 12, and then The threshold value in the threshold value storage unit 13 is erased from the unique information of the sensor 10 stored in the storage unit 22 . In particular, the unique information of the sensor 10 originally stored in the storage unit 22 is erased, whereby the information is compared in the determination unit 23, and although there is no difference in the unique address, it is determined that the information of other setting states has changed. situation will in principle disappear. Once the information is erased, the administrator can carry the type of information and the threshold value memorized afterwards to the tablet connected to the sensor 10 by authentication, as in the case where the sensor 10 is newly installed. A type terminal or the like is input/transferred and stored in the sensor 10 .

In the monitoring system 1 , the sensor 10 detects the value of the monitoring target item while the pump 19 serving as the monitoring target machine is operating. The sensor 10 transmits the value of the detected item to be monitored, together with other information, to the host device 20 at a predetermined timing as monitoring-related information. The value of the monitoring target item sent to the host device 20 is used as the basic information of the machine learning model in the optimization unit 24 . In addition, the sensor 10 compares the detected value of the monitoring target item with the threshold value stored in the threshold value storage unit 13 . The sensor 10 prevents a predetermined action from occurring if the value of the detected monitoring target item does not exceed the threshold value. If the value of the item to be monitored does not exceed the threshold value, it is estimated that no problem has occurred in the pump 19, and the normal operation of the pump 19 is continued. On the other hand, when the value of the monitoring target item exceeds the threshold value, the sensor 10 estimates that an abnormality has occurred in the pump 19, and issues an alarm (predetermined action occurs). Typically, an alarm is issued by generating an alarm signal in the sensor 10, and through the host device 20, notifying the device that the monitor is monitoring. The supervisor who recognizes the alarm can take measures such as checking the pump 19 at the time when the abnormality of the pump 19 is recognized, and can perform maintenance before the failure of the pump 19 having a higher possibility of failure than the other pumps 19 . In the monitoring system 1 of the present embodiment, the sensor 10 determines whether or not the value of the detected monitoring object item exceeds the threshold value. Therefore, the occurrence of time delay can be suppressed compared with the determination by a remote computer, and Respond quickly when an abnormality occurs.

In the monitoring system 1 functioning as described above, the sensor 10 generally has a shorter lifespan than the pump 19, so it may happen that the sensor 10 is replaced before the pump 19 is replaced. If the sensor 10 is replaced, the threshold value is also set again starting with the model information or the information of the installation location. As described above, the set threshold value is a unique value for each sensor 10 according to the installation environment or operating conditions. Therefore, the threshold value cannot be set uniformly. The larger the number, the more complicated the setting of the threshold value becomes. In addition, as described above, if the number of threshold values is large, it takes time and labor to reset manually. In addition, if the monitor who monitors the monitoring system 1 is different from the replacement operator who replaced the sensor 10, after the replacement operator has replaced the sensor 10, the monitor 10 resets the setting, and the monitoring of the sensor 10 is interrupted. period becomes longer. In the monitoring system 1 of the present embodiment, the following operations are performed to save labor for resetting the threshold value after the sensor 10 is replaced, and also to shorten the replacement time as much as possible. The monitoring of the sensor 10 is interrupted.

FIG. 3 is a flowchart illustrating a sequence for resetting the threshold value of a replaced sensor 10 . In the following description, when referring to the configuration of the monitoring system 1, FIG. 1 and FIG. 2 are appropriately referred to. As described above, when the monitoring system 1 is in a normal state, the host device 20 collects monitoring-related information from each sensor 10 at a predetermined time sequence (collection step: S1 ). Once the monitoring-related information is collected, the host device 20 judges whether or not there is an item not stored in the storage unit 22 with respect to the unique information among the collected monitoring-related information ( S2 ). If there is an item that is not stored in the storage unit 22 , the unsaved item is stored in the storage unit 22 (storage step: S3 ). Then, it returns to the process ( S1 ) of collecting monitoring-related information by the host device 20 .

On the other hand, in the step ( S2 ) of judging whether or not there is an item not stored in the storage unit 22 in the unique information collected by the sensor 10 , if there is no unsaved item, the collected The information of the installation state is compared with the information of the installation state stored in the storage unit 22 (comparison step: S4 ). When the collected information of the installation state is compared with the information of the installation state stored in the storage unit 22, it can be determined whether there is a difference (S5). If there is no difference between the two, the process returns to the process ( S1 ) of collecting and monitoring related information by the host device 20 . On the other hand, if there is a difference between the two, it is determined that the sensor 10 having the difference is the one that has been replaced (determination step: YES in S5 ). Once it is determined that the sensor 10 has been replaced, the upper device 20 returns reply information to the sensor 10 (replying process: S6 ). The reply information includes the threshold value stored in the storage unit 22 and is not originally included in the threshold value of the inherent information collected by the sensor 10 . In addition, if the inherent information collected by the sensor 10 includes information such as species information or installation location information that is not included in addition to the threshold value, the information that is not included may also be included in the reply information.

When the sensor 10 receives the reply information from the host device 20, it stores at least the threshold value that is not stored in the threshold value memory unit 13 among the threshold values included in the reply information (memory update process: S7) . In this memory updating step, if the reply information received by the host device 20 includes inherent information other than the threshold value, it is sufficient to memorize the information of the installation state that is not stored in the installation state storage unit 12 . As shown above, if the sensor 10 has been replaced, the information not stored in the replaced sensor 10 can be automatically filled with the information stored in the upper device 20 , so it can be easily performed and often is relatively complicated. reset the threshold value, etc. In addition, even when the supervisor and the replacement operator are different, the threshold value and the like can be automatically reset, so that the interruption period of monitoring by the replaced sensor 10 can be minimized . When the replaced sensor 10 is made to memorize the original insufficient information, it can be judged whether or not there is an instruction to end the monitoring of the monitoring target item by the monitoring system 1 ( S8 ). If not completed, the process returns to the process ( S1 ) of collecting and monitoring related information by the host device 20 , and then the above process is repeated. On the other hand, if there is still an instruction to end the monitoring, the monitoring is ended.

Among them, in the comparison step ( S4 ) in the above-mentioned flow, not only the information of the installation state collected by the sensor 10 and the information of the installation state stored in the storage unit 22 are compared, but also the information including the threshold value is compared. inherent information each other. As a result of the comparison, in the case where the two threshold values are different, in addition to some cases where all or part of the threshold value in the inherent information collected by the sensor 10 is missing, there are also There is no missing threshold value, but it is different from the threshold value stored in the storage unit 22 . At this time, the threshold value stored in the storage unit 22 may be updated by calculation using the machine learning model in the optimization unit 24 . The threshold value memorized in the threshold value memory portion 13 of the sensor 10 can be updated as After the optimizer, a higher-precision threshold value is set. In addition, in the judging step ( S5 ) in the above flow, if there is no difference in the unique address, but the information in other installation states is different (including the absence of information), it is determined that the sensor 10 has been When it is relocated, it is enough to sound an alarm. If the sensor 10 is properly relocated, in principle, it will not be judged that the sensor 10 has been relocated, but if the information about the sensor 10 in the storage unit 22 is not deleted, the There are cases where it is judged that the sensor 10 has been relocated. In order to cope with the situation as described above, if it is determined that the sensor 10 has been relocated, an alarm is issued to call the attention of the supervisor, and an appropriate setting (same setting as the initial setting) may be urged. Among them, as described above, generally speaking, since the life of the sensor 10 is shorter than that of the pump 19 , the sensor 10 is often replaced without replacing the pump 19 . However, there may be a situation where the sensor 10 is replaced a little before when the pump 19 has reached the time when the pump 19 must be replaced, and a situation where the sensor 10 continues to be used despite the pump 19 being replaced. At this time, if the specifications (flow rate, pressure, etc.) of the newly installed pump 19 and the removed pump 19 are not changed, it is not necessary to delete the inherent information of the sensor 10 that is stored in the continuous use, or to be stored in the upper position. The information of the storage unit 22 of the device 20 goes without saying.

As described above, according to the monitoring system 1 of the present embodiment, when the sensor 10 is replaced, the information previously stored in the host device 20 can be set in the new sensor 10, so that the resetting operation can be simplified. .

In the above description, the pump 19 is used as the monitoring target machine, but in addition to the pump, it may be a compressor, a turbine, a fan, a blower, a refrigerator, or a cooling tower, etc., or any combination of these may be used. . If the machine to be monitored is a rotating machine as described above, vibration may be used as one of the items to be monitored. The machine to be monitored corresponds to various machines having items to be monitored.

In the above description, it is assumed that the upper device 20 has the optimization unit 24, but if the optimization of the threshold value using the machine learning model is not performed, the optimization unit 24 may be omitted.

All documents, including publications, patent applications, and patent licenses cited in this specification, are each specifically shown and incorporated by reference, and are incorporated herein by reference in their entirety to the same extent as recited herein.

The nouns used in relation to the description of the present invention (especially in relation to the following claims) and the use of the same reference terms are to be construed as including the singular and the plural, as long as they are not specifically pointed out in this specification or are not clearly contradicted by the context both sides. The sentences "has", "has", "includes" and "includes", unless otherwise specified, are to be interpreted as open end terms (that is, "including but not limited to"). The detailed description of numerical ranges in this specification, unless otherwise specified in this specification, is only intended to serve as a shorthand for referring to each value within the range, and each value is as described in this specification. They are listed separately and incorporated into the specification. All methods described in this specification can be performed in any appropriate order unless otherwise indicated in this specification or clearly contradicted by the context. All examples or illustrative terms (such as "etc") used in this specification, unless otherwise stated, are intended only to describe the present invention in more detail, and are not intended to limit the scope of the present invention. Any statement in the specification should not be interpreted as indicating an element not described in the claims as being indispensable to the implementation of the present invention.

In this specification, preferred embodiments of the present invention are described including the best modes known to the inventors for carrying out the present invention. For those skilled in the art, upon reading the above description, variations of these preferred embodiments should be clearly understood. The inventors of the present invention intend to implement the present invention by methods other than those specifically described in this specification, expecting those skilled in the art to appropriately apply the modifications described above. Therefore, the present invention includes all modifications and equivalents of the contents described in the claims attached to this specification as permitted by the applicable law. In addition, any combination of the above-mentioned elements in all modifications is also included in the present invention as long as it is not specifically pointed out in this specification or is not clearly contradicted with the context.

1: Monitoring system 10, 10A, 10B, 10C, 10D, 10E: Sensors 11: Detection Department 12: Set state memory 13: Threshold value memory 14: Communications Department 19, 19A, 19B: Pumps 20: Host machine 21: Communications Department 22: Preservation Department 23: Judgment Department 24: Optimization Department

FIG. 1 is a schematic configuration diagram of the monitoring system of the present embodiment. FIG. 2 is a schematic configuration diagram of a sensor and a host device included in the monitoring system of the present embodiment. FIG. 3 is a flow diagram illustrating a sequence for resetting the threshold value of a replaced sensor.

1: Monitoring system

10: Sensor

11: Detection Department

12: Set state memory

13: Threshold value memory

14: Communications Department

20: Host machine

21: Communications Department

22: Preservation Department

23: Judgment Department

24: Optimization Department

Claims (7)

A surveillance system comprising: A monitoring device that detects the value of a monitoring target item of a monitoring target machine and can memorize unique information including information on the installation state of the monitoring device and the value of the monitoring target item that triggers a predetermined action the threshold value; and A host device, which collects monitoring-related information from the monitoring device, the monitoring-related information includes: the inherent information and detection information about the value of the monitoring object item detected by the monitoring device, and the host device is provided in the away from the position of the aforementioned monitoring target machine, The above-mentioned upper machine system is composed of: The monitoring-related information is collected by the monitoring device at a predetermined time sequence, If the aforementioned inherent information is not stored in the aforementioned monitoring-related information collected by the aforementioned monitoring device, at least the aforementioned inherent information shall be stored, If there is a difference between the information of the setting state among the inherent information collected by the monitoring device and the information of the setting state saved, it is determined that the monitoring device has been replaced, When it is determined that the monitoring device has been replaced, at least the threshold value of the portion of the inherent information collected by the replaced monitoring device that is not included in the threshold value of the stored inherent information will be included. The reply information is sent to the aforementioned monitoring device, The said monitoring apparatus is comprised so that it may memorize|store the threshold value of the part which is not memorized at least among the said threshold value received by the said host apparatus. The monitoring system of claim 1, wherein a plurality of the aforementioned monitoring devices are provided, The upper device is configured to store the unique information, determine whether the monitoring device has been replaced, and transmit the reply information to the monitoring device individually for each of the monitoring devices. The monitoring system according to claim 1 or 2, comprising a plurality of said monitoring target machines on which said monitoring device is mounted, The high-level equipment is configured to exchange the monitoring-related information with each of the monitoring devices installed in the plurality of monitoring-target machines. The monitoring system according to claim 1 or 2, wherein the upper device is configured to store the threshold value as a part of the inherent information, and use a machine learning model based on the detection information collected by the monitoring device The optimization is performed, and the optimized threshold value is included in the reply information and sent to the monitoring device. The monitoring system according to claim 1 or 2, wherein the monitoring target machine is one or more of a pump, a compressor, a turbine, a fan, a blower, a refrigerator, and a cooling tower. A monitoring device, which is a monitoring object machine, comprising: a detection unit that detects the value of the monitoring target item of the monitoring target machine; an installation state memory part, which stores the information of the installation state of the aforementioned monitoring device; a threshold value memory unit for storing part or all of the threshold value of the value of the monitoring target item that triggers the occurrence of a predetermined action after the monitoring device is installed in the monitoring target machine; and The communication unit transmits and receives information to a host device located at a position away from the machine to be monitored. A mechanical monitoring method comprising: The collection step is to collect the monitoring-related information transmitted by the monitoring device that detects the value of the monitoring target item of the monitoring target machine by the upper device installed at a position far from the monitoring target machine at a predetermined time sequence, The monitoring-related information includes detection information and inherent information about the value of the monitoring object item detected by the monitoring device, The unique information includes information on the installation state of the monitoring device and a threshold value of the value of the monitoring object item that triggers the occurrence of a predetermined action; In the preservation step, if the above-mentioned monitoring-related information collected by the above-mentioned monitoring device does not contain the above-mentioned unique information, the above-mentioned host device shall at least save the above-mentioned unique information; In a comparison step, the upper device compares the information of the setting state among the inherent information collected by the monitoring device with the information of the setting state stored; Judging process, the above-mentioned upper machine performs the above-mentioned comparison in the above-mentioned comparison process, if there is a difference, it is judged that the above-mentioned monitoring device has been replaced; In a reply step, when the upper device determines in the determination step that the monitoring device has been replaced, it will include at least the unique information collected by the replaced monitoring device among the threshold values of the stored unique information. Reply information of the threshold value of the part not included in the information, reply to the aforesaid monitoring device; and In the memory updating step, the monitoring device memorizes the threshold value of at least a part of the threshold value that is not memorized among the threshold values received by the host device.

Images