KR20230094738A - Event-based smart sensor, vessel vibration measuring device using the same, measuring method, and vessel applying the same - Google Patents

Abstract

The present invention relates to a device and a method for measuring vibration of a vessel structure in real time in a vessel in operation by using a smart sensor, and a vessel thereof. To this end, an event-based smart sensor for measuring vibration or noise of a vessel is provided. The smart sensor comprises: a sensor unit measuring vibration or noise of a vessel; a RAW data file generation unit generating a RAW data file based on a signal by measured by the sensor unit; a RAW data file storage unit storing the RAW data file; a sensor communication unit transmitting the RAW data file to an external measurement unit and receiving a control command from the external measurement unit; an event detection unit determining whether a value measured by the sensor unit is greater than or equal to a reference value; and a sensor control unit enabling a sensor to operate in either a monitoring mode, in which the sensor performs a predetermined measurement operation at a set cycle, or an event mode, in which the sensor performs a continuous measurement operation, based on a result detected by the event detection unit. Therefore, battery replacement work can be minimized.

Description

Event-based smart sensor, vessel vibration measuring device using the same, measuring method, and vessel applying the same {Event-based smart sensor, vessel vibration measuring device using the same, measuring method, and vessel applying the same}

The present invention relates to vibration and noise measurement and monitoring, and more particularly, to an event-based smart sensor, a ship vibration measurement device using the same, a measurement method, and a ship to which the same is applied.

Recently, cases of applying smart ship technology to ocean-going ships (eg, container ships, oil tankers, LNG carriers, etc.) are increasing. Smart ship is a technology that collects important data of the ship by installing navigation data collection equipment and satellite communication transmission module on the ship, and converts the collected data into a database and assets. In addition, the collected ship voyage data is transmitted to the land control center through satellite, and is used in decision-making by the operator.

From this point of view, the data collected about ships in operation are diverse, such as power, communication, vibration, noise, flow rate, speed, location, and weather. Among them, vibration and noise of mechanical parts such as engines, generators, boilers, and pumps have the greatest influence on the safety and operation schedule of ships.

Mechanical parts such as the ship's engine, generator, and boiler are operated 24 hours a day without stopping during the operation period (eg 20 to 40 days). Therefore, it is necessary to continuously monitor and maintain the operating state during operation. During this monitoring, vibration and noise generated from ship engines, generators, boilers, and pumps become industry standard parameters for determining normal operation and predicting maintenance (Condition monitoring and diagnostics of machines, ISO.FDIS 17359:2002 see (E)).

To this end, various vibration sensors or acoustic sensors that can be used by being attached to machinery or ship structures have been provided. However, existing wired vibration sensors or acoustic sensors require wiring to be connected, resulting in additional installation time and cost. In particular, considering that it is a narrow space made of steel and an internal space of a ship manufactured considering waterproofing, it is almost impossible to additionally wire a sensor for a ship already in operation.

In addition, when monitoring vibration and noise for 24 hours, a large amount of data is generated. Unlike general sensors such as temperature or pressure sensors, the signal of the vibration and noise sensor must acquire a large amount of data to be able to analyze the frequency using it. Because. In order to increase the frequency analysis resolution in the frequency analysis process, a large number of data is required. However, as the amount of calculation increases, time delay occurs until the analysis result comes out along with performance limitations of hardware and software such as CPU and memory. In addition, large-scale computer resources are required to transmit, process, and store them.

Therefore, it is necessary to research and develop an optimal monitoring method or system configuration for effective vibration and noise monitoring that can be realized in a ship.

1. Republic of Korea Patent Registration No. 10-1409986 (Vibration Monitoring Defect Diagnosis Device), 2. Korean Patent Registration No. 10-0444568 (a business method for an integrated monitoring operating system using the Internet and a computer-readable recording medium containing a program capable of implementing it).

Therefore, the present invention has been made to solve the above problems, and the problem to be solved by the present invention can constantly monitor the vibration and noise of the ship in operation, and if there is an abnormality, it can be monitored in real time. It is to provide a smart sensor based on possible events, a ship vibration measurement device using the same, a measurement method, and a ship to which it is applied.

Another object of the present invention is to configure to transmit RAW data in the form of a file so that data damage or deformation during communication does not occur while minimizing the wiring related to communication with the smart sensor in the ship, so that new ships or ships in operation It is to provide a smart sensor based on an event that can be installed on a ship, a ship vibration measurement device using the same, a measurement method, and a ship to which the same is applied.

Another object of the present invention is to provide a vibration measuring device of a ship structure using a smart sensor that can effectively monitor without acting as a large load on communication facilities in the ship, a measuring method using the same, and a ship to which the same is applied.

However, the technical problems to be achieved in the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned will be clear to those skilled in the art from the description below. You will be able to understand.

In order to achieve the above technical problem, it is a sensor for measuring the vibration or noise of the ship, the sensor unit for measuring the vibration or noise of the ship; A RAW data file generating unit for generating a RAW data file based on the measurement signal of the sensor unit; A RAW data file storage unit for storing RAW data files; a sensor communication unit that transmits a RAW data file to an external measurement unit and receives a control command from the measurement unit; an event detection unit that determines whether the measured value of the sensor unit is greater than or equal to a reference value; and a sensor control unit that causes the sensor to operate in one of a monitoring mode in which a predetermined measurement operation is performed for each set period and an event mode in which a continuous measurement operation is performed based on a detection result of the event detection unit. A smart sensor based on is provided.

In addition, at least one of the setting period and the reference value may be changed by the user.

Also, in the monitoring mode, the sensor control unit transmits the RAW data file at each set period or at a predetermined time.

Also, in the event mode, the sensor unit continuously measures vibration or noise of the ship, and the sensor controller immediately transmits a RAW data file.

An object of the present invention as described above, the plurality of smart sensors described above; A measurement unit capable of data communication with a plurality of smart sensors; A repeater capable of wireless data communication with a plurality of measuring units; And a server connected to a plurality of repeaters; including, the server, a storage unit for storing the RAW data file received from the repeater; an FFT unit that converts the RAW data file into frequency domain data; A vibration analysis and measurement unit that analyzes and measures ship vibration based on RAW data files and frequency domain data; And a vibration analysis and control unit for comparing the analysis result of the measurement unit with the vibration standard and noise standard stored in advance to determine whether there is an abnormality;

In addition, when the smart sensor is in event mode, the FFT unit converts the RAW data file continuously received in file units into frequency domain data in real time, and the vibration analysis and measurement unit converts the vibration of the ship based on the RAW data file and the frequency domain data. is analyzed, and the control unit compares the analysis results of the vibration analysis and measuring unit with the previously stored vibration standard and noise standard to determine whether or not there is an abnormality in real time.

An object of the present invention is a method for measuring vibration of a ship using the above-described vibration measuring device, (i-1) a plurality of smart sensors disposed on a ship measuring vibration or noise at each installation position at each set cycle ( S120); (i-2) comparing, by the event detection unit 165, a measured value with a reference value (S130); And (i-3) if the measured value is less than the reference value, generating a raw data file based on the measured signal by the raw data file generator of the smart sensor and transmitting the raw data file to the server at a specific time (S140 ); monitoring mode of the smart sensor that repeatedly performs; and (ii-1) if the measured value is greater than or equal to the reference value, the smart sensor continuously measures vibration or noise (S220); (ii-2) generating a RAW data file based on the measured signal by the RAW data file generating unit of the smart sensor and immediately transmitting the RAW data file to the server (S230); event mode including; It can also be achieved by a ship vibration measurement method using a characterized smart sensor.

In addition, after the event mode transmission step (S230), it returns to the monitoring mode.

In addition, the setting period may be 3 minutes to 10 minutes, and the specific time may be a time set by the user every 3 hours, 6 hours, 9 hours, 12 hours, or 24 hours.

The object of the present invention as described above can also be achieved by a vessel characterized by having the above-described vibration measuring device.

According to one embodiment of the present invention, the vibration and noise of the ship can be monitored with minimum power. Therefore, the battery used in the smart sensor can be used for a long time, and the battery replacement work can be minimized.

In addition, it is possible to secure the real-time quality of vibration and noise in an event situation in which abnormal noise or vibration of machinery occurs. Due to this, when an abnormal event situation occurs, it is possible to quickly grasp the situation and prepare an accurate solution.

In addition, even if smart sensors, measurement units, and repeaters are installed throughout the ship, power consumption can be minimized, thereby reducing the power burden on the ship. In addition, there is an advantage in that the data communication load of the in-vessel network and the processing load of the server device can be greatly reduced. Therefore, there is an economic feasibility that does not require a large-capacity server device, storage device, or high-speed processing device.

However, the effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and together with the detailed description of the present invention serve to further understand the technical idea of the present invention, the present invention is the details described in such drawings should not be construed as limited to
1 is an overall schematic diagram of a ship using a smart sensor according to the present invention;
Figure 2 is a schematic system block diagram of the vessel 5 shown in Figure 1;
3 is a perspective view of a smart sensor based on an event according to the present invention;
4 is a schematic internal block diagram of the smart sensor 10 shown in FIG. 3;
5 is a schematic internal block diagram of the measuring unit 200 shown in FIG. 1;
6 is a flowchart showing a method for measuring vibration of a ship using a smart sensor based on an event according to an embodiment of the present invention;
7 is a graph of RAW data of vibration measured by the smart sensor 10 according to the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. However, since the description of the present invention is only an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiment can be changed in various ways and can have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, the scope of the present invention should not be construed as being limited thereto.

The meaning of terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from another, and the scope of rights should not be limited by these terms. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element. It should be understood that when an element is referred to as “connected” to another element, it may be directly connected to the other element, but other elements may exist in the middle. On the other hand, when an element is referred to as being “directly connected” to another element, it should be understood that no intervening elements exist. Meanwhile, other expressions describing the relationship between components, such as “between” and “immediately between” or “adjacent to” and “directly adjacent to” should be interpreted similarly.

Singular expressions should be understood to include plural expressions unless the context clearly dictates otherwise, and terms such as “comprise” or “having” refer to a described feature, number, step, operation, component, part, or It should be understood that it is intended to indicate that a combination exists, and does not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Terms defined in commonly used dictionaries should be interpreted as consistent with meanings in the context of related art, and cannot be interpreted as having ideal or excessively formal meanings unless explicitly defined in the present invention.

Configuration of the embodiment

Hereinafter, the configuration of a preferred embodiment will be described in detail with reference to the accompanying drawings.

1 is an overall schematic diagram of a ship using a smart sensor according to the present invention, and FIG. 2 is a schematic system block diagram of the ship 5 shown in FIG. As shown in FIGS. 1 and 2 , the ship 5 may be a container ship, an oil tanker, an LNG ship, a cargo ship, a cruise ship, and the like that operate on the ocean. Such a ship 5 is capable of individual communication with the land control server 3 through the satellite 2, and bidirectional data transmission is possible.

The engine 30 is the main engine of the ship, has a height of 9 to 10 m, and generates vibration, noise and high temperature during operation. The generator 32 is for generating electricity and is operated by an auxiliary engine 33 (eg, a diesel engine). A plurality of smart sensors (10a, 10b, 10c, 10d) are attached to the engine 30, the generator 32 and the auxiliary engine 33, and the like. For example, the engine smart sensor 10b may be installed in several places on the upper side of the engine 30, in several places in the middle position, in several places in the lower position, and in the bearing housing of the rotating shaft. In addition, the smart sensor 10 may be installed in a generator, a boiler, an auxiliary engine, a pipe, a bearing of a rotating shaft, a transmission, a wall of an engine room, a floor, a pump, etc. in addition to the engine 30 of a ship. In addition, the measuring unit 200 may be installed one by one per 3 to 5 engine smart sensors 10b. In addition, a plurality of generator smart sensors 10a may be installed in the generator 32 and the auxiliary engine 33, and one measuring unit 200 in charge of them may be installed.

Inside the vessel 5, a server 600, a plurality of smart sensors 10a, 10b, 10c, 10d, a plurality of measuring units 200, and a plurality of repeaters 400 are installed.

The server 600 may be composed of a server computer, a workstation, a personal computer, and the like.

The satellite communication unit 630 transmits the RAW data file, the time domain data file, and the frequency domain data file stored in the storage unit 635 to the satellite one to five times a day. Or, when a special or dangerous situation occurs, the corresponding file is transmitted according to the user's command. In addition, the satellite communication unit 630 may receive a control command (eg, remote control) or data from a land control server (not shown).

The storage unit 635 stores the RAW data file received from the repeater 400 and the frequency domain data file converted by the FFT unit 650. The storage unit 635 may be a hard disk drive, SSD, flash memory, CD-ROM writer, or the like.

The vibration analysis and measurement unit 645 generates a frequency domain data file using the frequency domain data converted by the FFT unit 650. In addition, the vibration analysis and measurement unit 645 calculates and analyzes data such as average amplitude, maximum amplitude, amplitude, frequency, vibration bandwidth, deformation, strain, and damping of the ship from the RAW data file and the frequency domain data file.

In addition, the vibration analysis and measurement unit 645 uses RAW data files and frequency domain data files to perform various add-on analysis algorithms (e.g., structure vibration slow motion video, stress distribution and stress concentration (finite element method), modal test ( Modal Test) simulation, natural frequency calculation, etc.) are executed.

The display 640 may be a monitor, speaker, or the like that displays the processing process or processing result of the controller 610 .

The FFT unit (Fast Fourier Transformation, 650) generates data for each frequency band using the RAW data file.

The database unit 655 (eg SCADA DB) is composed of a database table for maintenance of the entire system and a database table for storing transmitted measurement data. Among the database tables, the sensor management DB (not shown) defines fields such as the serial number of the smart sensor 10, location, date of manufacture, date of purchase, firmware updater version and date of update. In the error and abnormal DB (not shown), the history of errors, defects, and abnormalities related to vibration and noise of the machine is sequentially stored. To this end, the error and anomaly DB has fields such as order of occurrence, date of occurrence, type of error, and follow-up action.

The alarm unit 660 is a member that informs when vibration, noise, or temperature outside of a reference value is detected. The alarm unit 660 may be a speaker, a warning light, a buzzer or a warning display on the display 640 .

An input end of the gateway 620 is connected to a plurality of repeaters 400, and an output end is connected to the control unit 610 of the server 600.

The control unit 610 performs operation, control, instruction, calculation, and judgment of the server 600, and may be a CPU or the like.

Each repeater 400 is capable of wireless communication with a plurality of (eg, 2 to 6) measuring units 200, and these repeaters 400 are attached to a wall or ceiling within the ship 5, respectively. To this end, the repeater 400 includes at least one of a Bluetooth communication module, a Wi-Fi communication module, an infrared communication module, a LAN communication module, and a USB communication module. Each repeater 400 is connected to the gateway 620 through a wire.

Figure 3 is a perspective view of a smart sensor based on the event according to the present invention, Figure 4 is a schematic internal block diagram of the smart sensor 10 shown in FIG. 3 and 4, the event notification unit 150 by LED is exposed on the upper surface of the smart sensor 10, the power generation unit 155 is installed in the middle, and the terminal unit 145 is installed on the outside. Exposed.

The event notification unit 150 expresses the operating state or current mode of the smart sensor 10 to the outside. The expression method can be lamp, LED, LCD, warning light, speaker, buzzer, etc. If the event notification unit 150 is an LED, "green" light is emitted in the monitoring mode, "red" light is emitted in the event mode, and "yellow" light is emitted or blinks in case of a warning or an error.

As shown in FIG. 4 , the sensor unit 110 may include a temperature sensor, a humidity sensor, an acceleration sensor, a gyro sensor, and the like in addition to a vibration sensor 114 and an acoustic sensor 112 . The vibration sensor 114 may measure vibration in the X-axis, Y-axis, and Z-axis directions, respectively. The acoustic sensor 112 detects ambient noise and may be a microphone. The vibration sensor 114, the sound sensor 112, the temperature sensor, the humidity sensor, and the acceleration sensor may have an output frequency of 0.1 second to 1 second interval (0.1 to 1 Hz).

The signal processing unit 120 includes a filter, an amplifier, an analog-digital converter (ADC), a digital signal processor (DSP), and the like. The signal processing unit 120 converts the electrical signal of the sensor unit 110 into discrete data. Since these components are known components, detailed internal descriptions thereof will be omitted.

The RAW data file generation unit 125 receives the signal processed by the signal processing unit 120 and generates a RAW data file. The RAW data file is in the format of a text (TEXT) file, and can be compressed and transmitted in a known compression format (eg, ZIP file). Such compressed transmission has an effect of reducing transmission time and network load. The RAW data file contains the location where the corresponding smart sensor 10 is installed (e.g., on the engine, under the engine, among boilers, pump 1, etc.), the serial number of the smart sensor 10 (e.g., 001, 002, etc.), and the measurement time ( Example: 20210325_18161212: March 25, 2021 18:16:12:12). And, at least among the X-axis amplitude (eg: 0.2315), Y-axis displacement (eg: 0.8723), Z-axis displacement (eg: 0.0001), and sound signal (eg: 76 dB) measured by the smart sensor 10 contains one Other error codes (eg: 1 (normal), 0 (low power), 2 (communication failure), 3 (sensor malfunction), etc.), temperature data, humidity data, acceleration data, etc. may also be included.

The RAW data file generating unit 125 generates a RAW data file by receiving signals from the sensor unit 110 at intervals of 3 to 10 minutes. Preferably, it is good to receive it every 5 minutes. And, the RAW data file generating unit 125 generates a RAW data file every cycle in the monitoring mode.

The RAW data storage unit 130 stores RAW data files generated in monitoring mode or event mode. The RAW data storage unit 130 may be a hard disk, flash memory or SSD. When the storage capacity is exceeded, the RAW data storage unit 130 secures storage space by sequentially deleting transmitted or old files.

The sensor communication unit 140 transmits data stored in the RAW data storage unit 130 to the measurement unit 200 through the terminal unit 145 and receives a control command (eg, a trigger signal) from the measurement unit 200 . The measurement unit 200 determines whether the received RAW data file is damaged. If the file is damaged or an error occurs during transmission, retransmission of the RAW data file is requested, and this process is repeated until it is determined that the file is not damaged.

The sensor communication unit 140 may be a wireless communication or wired communication of at least one of a Bluetooth communication module, a Wi-Fi communication module, an infrared communication module, a LAN communication module, a ZigBee communication module, a 3G, 4G communication module, and a USB communication module.

The power generation unit 155 may convert vibration of a mechanical device (eg engine) to which the smart sensor 10 is attached to electrical energy, store the converted electrical energy, and power required for operation of the smart sensor 10. is a component that supplies

The sensor control unit 100 controls the control, calculation, judgment, and operation of the entire smart sensor 10, and can be implemented with a CPU, MICOM, or the like.

The event detection unit 165 outputs that an event has occurred when the measurement value of the sensor unit 110 is greater than or equal to the reference value in the monitoring mode. The generated output signal is transmitted to the sensor controller 100 .

The environment setting unit 170 stores information such as reference values and cycles of vibration and noise set by the user.

The terminal unit 145 is an electronic component to which a cable connector is connected in case of wired communication. Optionally, in the case of wireless communication, the terminal unit 145 may be an antenna.

FIG. 5 is a schematic internal block diagram of the measuring unit 200 shown in FIG. 1 . As shown in Figure 5, AP (Access Point) communication unit 230 is provided with a plurality of communication channels for connection with the smart sensor (10). The AP communication unit 230 may be a wired communication module connected to the wire 210 or a wireless communication module. The wireless communication module adopts at least one of a Bluetooth communication module, a Wi-Fi communication module, an infrared communication module, a LAN communication module, a 3G, 4G communication module, and a USB communication module to enable two-way communication with the smart sensor 10.

The AP power unit 240 may always receive power from the outside or may be a secondary battery. The AP power supply unit 240 supplies power to the smart sensor 10 connected to the measuring unit 200 and the wire 210 .

The server communication unit 245 enables communication with the server 600 through wired or wireless communication through the repeater 400 .

The AP display 250 may be an LCD screen or LED displaying the status, operation mode, error, etc. of the measurement unit 200 .

The AP storage unit 255 stores RAW data files and the like received from the smart sensor 10 . The AP storage unit 255 may be a hard disk drive, SSD, flash memory, CD-ROM writer, or the like.

The AP input unit 260 may be a button capable of inputting control commands, a USB port, a key matrix, and the like.

The AP controller 220 may control the measurement unit 200 to operate in a monitoring mode or an event mode. The AP control unit 220 is first set so that the measurement unit 200 operates in a monitoring mode. The AP controller 220 switches the measurement unit 200 to an event mode when a trigger signal is input from the smart sensor 10 . The AP control unit 220 controls the entire control, calculation, determination, and operation of the measurement unit 200, and may be implemented with a CPU, MICOM, or the like.

Operation of the embodiment

Hereinafter, the operation of the present invention having the above configuration will be described in detail with reference to the accompanying drawings. 6 is a flowchart illustrating a method for measuring ship vibration using an event-based smart sensor according to an embodiment of the present invention, and FIG. 7 is a raw data graph of vibration measured by the smart sensor 10 according to the present invention. .

As shown in FIGS. 6 and 7 , first, the smart sensor 10 is installed at various locations of the engine 30 and connected to the measuring unit 200 and the repeater 400 by wire or wirelessly.

The smart sensor 10 preferentially operates in a monitoring mode (S110). In the monitoring mode, a plurality of smart sensors 10 disposed on the ship measure vibration or noise at each installation position for each set period (S120). The setting cycle may be 3 to 10 minutes, preferably 5 minutes.

Next, the event detection unit 165 compares the measured value with the reference value of the environment setting unit 170 (S130).

If the measured value is less than the reference value, the RAW data file generation unit 125 of the smart sensor 10 generates a RAW data file based on the measured signal and transmits the RAW data file to the server at a specific time (S140) . The specific time may be a time set by the user every 3 hours, 6 hours, 9 hours, 12 hours, or 24 hours. In this embodiment, server transmission is performed once a day, in the middle of the night. Optionally, in monitoring mode, measurements or RAW data files may not be transmitted.

In monitoring mode, this process is repeated continuously.

If the measured value is greater than or equal to the reference value, the smart sensor 10 is switched to the event mode (S210). In the event mode, the smart sensor 10 measures vibration or noise continuously and in real time (S220).

7 is a graph of vibration measured by the smart sensor 10 according to the present invention. As shown in FIG. 7 , when the measured signal is less than the first reference value A (eg, 1.8 mm/s), it is determined to be normal and the standby mode is maintained. If the measured signal is the same as the first reference value (A), it is determined that the event (C) has occurred, it is determined as “caution” and the monitoring mode is switched. If the measured signal exceeds the second reference value (B) (eg: 7.1 mm/s), it is judged as “abnormal” and countermeasures are taken.

Then, the RAW data file generating unit 125 of the smart sensor 10 generates a RAW data file based on the measured signal, and immediately transmits the RAW data file to the server 600 (S230). In order to preferentially transmit RAW data files generated in real time in event mode, data transmission of other smart sensors 10 in monitoring mode may be pushed to a lower priority or stopped. After transmission, the smart sensor 10 returns to the monitoring mode again.

As described above, the smart sensor 10 of the present invention minimizes data transmission in monitoring mode and transmits RAW data files to the server in real time only in event mode to reduce the data communication load of the in-ship network and the processing load of the server device. can be greatly reduced.

Variant Example

The raw data of the present invention is transmitted in the event mode, but the measured value or raw data immediately before the event mode and the measured value or raw data immediately after the event mode can be transmitted together so that the history or trend of change can be easily grasped.

Although the setting cycle of the present invention is proposed to be 3 to 10 minutes, artificial intelligence depends on the location of the vessel (ocean, near sea), weather, time zone (daytime, nighttime), equipment aging, failure frequency, rotational speed, operating temperature, etc. can be variably changed.

Detailed descriptions of the preferred embodiments of the present invention disclosed as described above are provided to enable those skilled in the art to implement and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the scope of the present invention. For example, those skilled in the art can use each configuration described in the above-described embodiments in a manner of combining with each other. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention. Accordingly, the above detailed description should not be construed as limiting in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that do not have an explicit citation relationship in the claims may be combined to form an embodiment or may be included as new claims by amendment after filing.

5: ship,
10, 10a, 10b, 10c, 10d: smart sensor,
30: engine,
32: generator,
33: auxiliary engine,
100: sensor control unit,
110: sensor unit,
112: acoustic sensor,
114: vibration sensor,
120: signal processing unit,
125: RAW data file generation unit,
130: RAW data file storage unit,
140: sensor communication unit,
145: terminal part,
150: event notification unit,
155: power generation unit,
165: event detection unit,
170: environment setting unit,
200: measuring unit,
210: wiring,
220: AP control unit,
230: AP Communications Department,
240: AP power unit,
245: server communication unit,
250: AP display,
255: AP storage unit,
260: AP input unit,
400: repeater,
600: server,
610: control unit,
620: gateway,
630: satellite communication department,
635: storage unit,
640: display unit,
645: vibration analysis and measurement unit,
650: FFT unit,
655: database unit,
660: alarm unit.

Claims (11)

A sensor for measuring vibration or noise of a ship,
A sensor unit for measuring vibration or noise of the ship;
a RAW data file generation unit for generating a RAW data file based on the measurement signal of the sensor unit;
a RAW data file storage unit for storing the RAW data file;
a sensor communication unit that transmits the RAW data file to an external measurement unit and receives a control command from the measurement unit;
an event detection unit determining whether the measured value of the sensor unit is greater than or equal to a reference value; and
Based on the detection result of the event detection unit, a sensor control unit for causing the sensor to operate in one of a monitoring mode in which a predetermined measurement operation is performed for each set period and an event mode in which a continuous measurement operation is performed. Event-based smart sensors. According to claim 1,
At least one of the setting period and the reference value is a smart sensor based on an event, characterized in that can be changed by the user. According to claim 1,
In the monitoring mode, the sensor control unit transmits the RAW data file every set period or at a predetermined time, characterized in that the event-based smart sensor. According to claim 1,
When in the event mode,
The sensor unit continuously measures the vibration or noise of the ship,
The sensor controller is an event-based smart sensor, characterized in that for immediately transmitting the RAW data file. A plurality of smart sensors according to any one of claims 1 to 4;
A measuring unit capable of data communication with a plurality of the smart sensors;
A repeater capable of wireless data communication with the plurality of measurement units; and
Including; a server connected to a plurality of the repeaters;
The server,
a storage unit for storing the RAW data file received from the repeater;
an FFT unit converting the RAW data file into frequency domain data;
a vibration analysis and measurement unit for analyzing and measuring ship vibration based on the RAW data file and the frequency domain data; and
Vibration measurement device of a ship using a smart sensor, characterized in that it comprises a; control unit for comparing the analysis result of the vibration analysis and measurement unit with the vibration standard and the noise standard stored in advance to determine whether there is an abnormality. According to claim 5,
When the smart sensor is in event mode,
The FFT unit converts the RAW data file continuously received in file units into frequency domain data in real time,
The vibration analysis and measurement unit analyzes the vibration of the ship based on the RAW data file and the frequency domain data,
The control unit compares the analysis result of the vibration analysis and measurement unit with the vibration standard and the noise standard stored in advance to determine whether there is an abnormality in real time. As a method for measuring vibration of a ship using the vibration measuring device according to claim 5,
(i-1) a plurality of smart sensors disposed on the ship measuring vibration or noise at each installation position for each set cycle (S120);
(i-2) comparing the measured value with the reference value by the event detection unit (S130); and
(i-3) If the measured value is less than the reference value, the RAW data file generator of the smart sensor generates a RAW data file based on the measured signal, and transmits the RAW data file to the server at a specific time (S140); monitoring mode of the smart sensor to repeatedly perform; and
(ii-1) if the measured value is greater than or equal to the reference value, the smart sensor continuously measuring vibration or noise (S220);
(ii-2) generating a RAW data file based on the measured signal by the RAW data file generating unit of the smart sensor and immediately transmitting the RAW data file to the server (S230); event mode including; Vibration measurement method of a ship using a smart sensor, characterized in that. According to claim 7,
After the transmission step (S230) of the event mode,
Ship vibration measuring method using a smart sensor, characterized in that for returning to the monitoring mode. According to claim 7,
The vibration measurement method of a ship using a smart sensor, characterized in that the setting period is 3 minutes to 10 minutes. According to claim 7,
The specific time is a method for measuring ship vibration using a smart sensor, characterized in that the time set by the user every 3 hours, 6 hours, 9 hours, 12 hours, or 24 hours. A ship characterized in that it has the vibration measuring device according to claim 5.

Images