Monitoring device, rotating equipment device, rotating equipment system and monitoring method

Abstract

To accurately monitor the abnormality of a rotary equipment device such as a pump.SOLUTION: A monitoring device includes a reception part for receiving rotating equipment information output from a rotating equipment device by wire, a monitoring part for performing abnormality determination on the basis of the received rotating equipment information, and a transmission part for transmitting the result of the abnormality determination by radio.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a monitoring device, a rotating machine device, a rotating machine system, and a monitoring method. [Background technology]

[0002] Patent Document 1 discloses a technique in which a signal from a pump device is transmitted to a management server via a communication device, and the management server determines whether or not there is a malfunction and the operating state of the pump device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7462955 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to accurately monitor abnormalities in rotating machinery such as pumps. [Means for solving the problem]

[0005] By way of example, the following solution is provided:

[0006] [1] a receiving unit that receives, via a wire, rotating device information output from the rotating device; a monitoring unit that determines an abnormality based on the received rotating device information; a transmitter that wirelessly transmits the result of the abnormality determination.

[0007] [2] Regardless of the timing at which the transmitter performs wireless transmission, the receiving unit receives the rotating device information, The monitoring device according to [1], wherein the monitoring unit performs the abnormality determination.

[0008] [3] The transmitting unit performs wireless transmission at predetermined time intervals, but is not limited by the predetermined time intervals, the receiving unit receives the rotating device information, The monitoring device according to [1], wherein the monitoring unit performs the abnormality determination.

[0009] [4] The monitoring device according to [3], wherein the transmission unit transmits, in addition to the result of the abnormality determination, data based on the rotating device information received between the previous transmission timing and the current transmission timing.

[0010] [5] The monitoring device is connected to a sensor of the rotating equipment device by wire, The monitoring device according to any one of [1] to [4], wherein the receiving unit receives a signal (which may be an analog value or a digital value) output from the sensor as the rotating device information.

[0011] [6] a rotating equipment device; [1] to [5], and a monitoring device according to any one of the above. a server that wirelessly receives the result of the abnormality determination transmitted from the transmission unit.

[0012] [7] an output unit that outputs rotating device information; a monitoring unit that acquires the rotating device information from the output unit via a wired connection and determines whether there is an abnormality based on the rotating device information; a transmitter that wirelessly transmits the result of the abnormality determination.

[0013] [8] [7] A rotating machine device according to the present invention; a server that wirelessly receives the result of the abnormality determination transmitted from the transmission unit.

[0014] [9] The rotating equipment system according to [6] or [8], wherein the rotating equipment device is a rotating equipment that vibrates.

[0015]

[10] The rotating equipment system according to [6], [8] or [9], further comprising a relay device that wirelessly receives the result of the abnormality determination transmitted from the transmitter and wirelessly transmits the result to the server.

[0016]

[11] receiving, via a wire, rotating device information output from the rotating device; determining whether there is an abnormality based on the received rotating device information; and wirelessly transmitting the result of the abnormality determination.

[0017]

[12] outputting the rotating device information from an output unit; acquiring the rotating device information from the output unit via a wired connection and determining an abnormality based on the rotating device information; and wirelessly transmitting the result of the abnormality determination. [Effects of the Invention]

[0018] Abnormalities in rotating machinery such as pumps can be monitored with high accuracy. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a block diagram showing a schematic configuration of a rotating device system according to a first embodiment. [Figure 2] 2A to 2C are diagrams illustrating the operation of the rotating machine system of FIG. 1. [Figure 3] FIG. 10 is a block diagram showing a schematic configuration of a rotating device system according to a modified example of the first embodiment. [Figure 4] FIG. 10 is a block diagram showing a schematic configuration of a rotating device system according to a second embodiment. [Figure 5] FIG. 10 is a block diagram showing a schematic configuration of a rotating device system according to a modified example of the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0021] (First embodiment) Fig. 1 is a block diagram showing a schematic configuration of a rotating equipment system according to a first embodiment. This rotating equipment system includes a rotating equipment device 1, a monitoring device 2, and a server 3 (for example, a host device that is easily accessible by an operator). In this embodiment, it is mainly assumed that the monitoring device 2 is added to an existing rotating equipment device 1, and the monitoring device 2 is provided separately from the rotating equipment device 1. The rotating equipment device 1 and the monitoring device 2 are connected by a wire 51. The monitoring device 2 and the server 3 are also connected wirelessly 52 (for example, Wi-Fi, short-range wireless communication, LTE).

[0022] The rotating machine device 1 is a rotating machine that vibrates, such as a pump, a blower, a cooling tower, a refrigerator, or a compressor, and has a rotating member (not shown) and an output unit 11. The output unit 11 outputs rotating machine information that indicates the state of the rotating machine device 1.

[0023] As an example, the output unit 11 has a device output unit 111 that outputs a device output signal. In this case, the device output unit 111 is wired to the monitoring device 2. The device output signal may be a signal indicating whether the device is operating or stopped, a signal indicating whether the device is in a normal state or an abnormal state, a signal indicating whether a predetermined contact is open or closed, or the like.

[0024] The output unit 11 may also have a sensor 112 that outputs a sensor signal. In this case, the sensor 112 is connected by wire to the monitoring device 2. The sensor signal is a current value flowing through a specific part of the rotating machinery device 1 (for example, a motor that rotates a rotating member), a temperature of a specific part, etc.

[0025] The rotating equipment information output from the rotating equipment device 1 is transmitted to the monitoring device 2 via a wire 51. For example, the wire 51 may include a digital signal line that transmits a signal from the device output unit 111. In this case, the voltage of the digital signal line (for example, a power supply voltage or a ground voltage) indicates the signal value. The wire 51 may also include a signal line (which may be an analog signal line or a digital signal line) that transmits a signal value (which may be an analog value or a digital value) (raw data) from the sensor 112 in real time. In this case, the analog voltage of the wire 51 indicates the sensor value.

[0026] The monitoring device 2 has a receiving unit 21, a monitoring unit 22, and a transmitting unit 23. The receiving unit 21 receives rotating equipment information output from the rotating equipment device 1 via a wired connection 51. The monitoring unit 22 performs an abnormality determination based on the rotating equipment information. The transmitting unit 23 transmits the result of the abnormality determination to the server 3 wirelessly 52.

[0027] Here, in order to reduce the power consumption of the monitoring device 2, there is a limit to the frequency of wireless transmission from the transmission unit 23 to the server 3. However, in this embodiment, the configuration is such that abnormality determination is performed by the monitoring device 2 connected to the rotating equipment device 1 by wire 51. Therefore, the monitoring device 2 can perform abnormality determination regardless of the timing at which the transmission unit 23 transmits to the server 3 wirelessly 52. ​​In detail, regardless of the timing at which the transmission unit 23 transmits the result of the abnormality determination to the server 3 wirelessly 52, the reception unit 21 can receive rotating equipment information from the rotating equipment device 1 and the monitoring unit 22 can perform abnormality determination.

[0028] In other words, even if the transmitting unit 23 transmits to the server 3 at a predetermined time interval (for example, once every 10 minutes), the monitoring device 2 can perform abnormality determination without being limited by that time interval. In other words, even if the transmitting unit 23 transmits to the server 3 at a predetermined time interval, the receiving unit 21 can receive rotating device information from the rotating device 1 and the monitoring unit 22 can perform abnormality determination without being limited by that time interval.

[0029] Figure 2 is a diagram illustrating the operation of the rotating equipment system of Figure 1. The horizontal axis represents time, and the vertical axis represents rotating equipment information (referred to as sensor value D output from sensor 112) output from output unit 11 of rotating equipment device 1. The sensor values ​​at times t10, t15, t20, and t30 are D10, D15, D20, and D30, respectively.

[0030] If the sensor value D exceeds the threshold value Dth, the monitoring unit 22 determines that an abnormality has occurred. In the example of Fig. 2, the sensor value D15 is determined to be abnormal, and the other sensor values ​​D10, D20, and D30 are determined to be normal. Also, assume that wireless transmission from the monitoring device 2 to the server 3 is performed at times t10, t20, and t30.

[0031] Unlike the present embodiment, consider a case where abnormality determination is performed by the server 3 rather than the monitoring device 2. In this case, sensor values ​​D10, D20, and D30 output at times t10, t20, and t30, respectively, are transmitted to the server 3. Since the sensor values ​​D10, D20, and D30 are all less than the threshold value Dth, no abnormality is detected by the server 3. In this manner, in a mode where the sensor values ​​are transmitted to the server 3 connected wirelessly 52 and the server 3 performs abnormality determination, it is difficult to detect a temporary abnormality.

[0032] In contrast, in this embodiment, the receiving unit 21 receives the sensor value D in real time, regardless of the time intervals of times t10, t20, and t30 at which wireless transmission is performed, and the monitoring unit 22 makes a determination based on this. Therefore, the monitoring unit 22 can detect an abnormality in the sensor value D15 output at time t15. This determination result of an abnormality is wirelessly transmitted to the server 3 at time t20. In this way, in this embodiment, the abnormality determination is made by the monitoring device 2 connected by wire 51, so that temporary abnormalities can be detected.

[0033] At time t20, the monitoring unit 22 may generate data (for example, an average value) based on the sensor value D received by the receiving unit 21 between times t10 and t20, and may also wirelessly transmit this data to the server 3.

[0034] In this way, in this embodiment, abnormality determination is performed by the monitoring device 2 that is wired connected to the rotating machine device 1. Therefore, even if there is a limit to the frequency of transmission to the server 3, the risk of overlooking an abnormality can be reduced.

[0035] Fig. 3 is a modified example of the rotating equipment system of Fig. 1. This rotating equipment system includes a relay device 4 provided between a monitoring device 2 and a server 3. The monitoring device 2 and the relay device 4 are connected wirelessly 53 (for example, Bluetooth (registered trademark)). The relay device 4 and the server 3 are connected wirelessly 54 (for example, LTE). Even in this case, abnormality determination is performed by the monitoring device 2 connected to the rotating equipment 1 by wire 51, thereby reducing the risk of overlooking an abnormality.

[0036] (Second embodiment) In the first embodiment described above, the monitoring device 2 is provided separately from the rotating equipment device 1. In contrast, in the second embodiment described below, the monitoring function is provided within the rotating equipment device 1. The following will mainly describe the differences from the first embodiment.

[0037] 4 is a block diagram showing a schematic configuration of a rotating device system according to the second embodiment. This rotating device system includes a rotating device 1 and a server 3. The rotating device 1 and the server 3 are connected wirelessly 56 (for example, Wi-Fi, short-range wireless communication, LTE).

[0038] The rotating equipment device 1 has a monitoring unit 22 and a transmitting unit 23 in addition to the output unit 11 described in the first embodiment. The output unit 11 and the monitoring unit 22 are connected by a wire 55. For example, if the output unit 11 has an equipment output unit 111, the equipment output unit 111 and the monitoring unit 22 are connected by a wire. If the output unit 11 has a sensor 112, the sensor 112 and the monitoring unit 22 are connected by a wire. The monitoring unit 22 acquires rotating equipment information from the output unit 11 by a wire 55 within the rotating equipment device 1, and determines whether an abnormality exists based on the rotating equipment information.

[0039] In this embodiment, abnormality determination is performed by the monitoring unit 22 which is wired to the output unit 11 within the rotating equipment device 1, so even if there is a limit to the frequency of transmission to the server 3, the risk of overlooking a temporary abnormality can be reduced.

[0040] 5, a relay device 4 may also be provided between the rotating machine device 1 and the server 3. The rotating machine device 1 and the relay device 4 are connected wirelessly 57 (for example, Bluetooth (registered trademark)). The relay device 4 and the server 3 are connected wirelessly 58 (for example, LTE).

[0041] Any part or all of the functional units described in this specification may be realized by a program. The program mentioned in this specification may be non-transitoryly recorded on a computer-readable recording medium.

[0042] Such a program may be installed on a computer (a so-called native application), in which case the program may be downloaded to the computer via a communication line (including wireless communication) such as the Internet, or may be distributed in a state where it is installed on the computer.

[0043] Alternatively, the program may be one that runs on a web browser (a so-called web app), in which case the computer may receive the program written in a markup language file (e.g., an HTML file) from a server and execute it using the web browser.

[0044] Based on the above description, a person skilled in the art may be able to conceive additional effects and various modifications of the present invention, but the aspects of the present invention are not limited to the individual embodiments described above. For example, inventions that extract only a part of each embodiment or inventions that combine multiple embodiments are naturally envisioned. Various additions, modifications, and partial deletions are possible within the scope of the conceptual idea and spirit of the present invention, which can be derived from the content defined in the claims and their equivalents.

[0045] For example, what is described in this specification as a single device (or component, the same applies hereinafter) (including what is depicted as a single device in the drawings) may be realized by multiple devices. Conversely, what is described in this specification as multiple devices (including what is depicted as multiple devices in the drawings) may be realized by a single device. Alternatively, some or all of the means or functions included in a device (e.g., a server) may be included in another device (e.g., a user terminal). Furthermore, a "system" may consist of a single device, or may consist of two or more devices (e.g., a server and a user terminal, or multiple user terminals).

[0046] Furthermore, not all of the features described in this specification are essential requirements. In particular, features described in this specification but not included in the claims can be considered optional additional features.

[0047] It should be noted that the applicant is merely aware of the inventions disclosed in the documents listed in the "Prior Art Documents" section of this specification, and the present invention does not necessarily aim to solve the problems of the disclosed inventions. The problem that the present invention aims to solve should be determined by taking into consideration the entire specification. For example, if this specification states that a specific configuration achieves a certain effect, it can also be said that the present invention solves a problem that is the reverse of that effect. However, it is not necessarily intended that such a specific configuration be an essential requirement. [Explanation of symbols]

[0048] 1 Rotating machinery 11 Output section 111 Device output section 112 Sensors 2 Monitoring device 21 Receiving unit 22 Monitoring Department 23 Transmitter 3 Server 4. Relay Device 51,55 Wired 52~54,56~58 Wireless

Claims

1. a receiving unit that receives, via a wire, rotating device information output from the rotating device; a monitoring unit that determines an abnormality based on the received rotating device information; a transmitter that wirelessly transmits the result of the abnormality determination.

2. Regardless of the timing at which the transmitter performs wireless transmission, the receiving unit receives the rotating device information, The monitoring device according to claim 1 , wherein the monitoring unit performs the abnormality determination.

3. The transmitting unit performs wireless transmission at predetermined time intervals, but is not limited by the predetermined time intervals, the receiving unit receives the rotating device information, The monitoring device according to claim 1 , wherein the monitoring unit performs the abnormality determination.

4. The monitoring device according to claim 3 , wherein the transmitter transmits, in addition to the result of the abnormality determination, data based on the rotating device information received between a previous transmission timing and a current transmission timing.

5. The monitoring device is connected to a sensor of the rotating equipment device by wire, The monitoring device according to claim 1 , wherein the receiving unit receives a signal output from the sensor as the rotating device information.

6. a rotating equipment device; The monitoring device according to claim 1; a server that wirelessly receives the result of the abnormality determination transmitted from the transmission unit.

7. an output unit that outputs rotating device information; a monitoring unit that acquires the rotating device information from the output unit via a wired connection and determines whether there is an abnormality based on the rotating device information; a transmitter that wirelessly transmits the result of the abnormality determination.

8. The rotating equipment device according to claim 7 ; a server that wirelessly receives the result of the abnormality determination transmitted from the transmission unit.

9. The rotating equipment system according to claim 6 or 8, wherein the rotating equipment device is a rotating equipment that vibrates.

10. 9. The rotating machine system according to claim 6, further comprising a relay device that wirelessly receives the result of the abnormality determination transmitted from the transmitter and wirelessly transmits the result to the server.

11. receiving, via a wire, rotating device information output from the rotating device; determining whether there is an abnormality based on the received rotating device information; and wirelessly transmitting the result of the abnormality determination.

12. outputting the rotating device information from an output unit; acquiring the rotating device information from the output unit via a wired connection and determining an abnormality based on the rotating device information; and wirelessly transmitting the result of the abnormality determination.

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