Voyage data storage device and voyage data storage method

Abstract

To provide a voyage data storage device capable of efficiently acquiring target information.SOLUTION: A voyage data storage device includes: a sound collecting apparatus 2 for collecting sound in a ship; a sound storage unit 3 for storing sound data collected by the sound collecting apparatus 2 in association with date and time; and an event storage unit 4 for extracting at least one of human voice and a predetermined sound as event data from the sound data collected by the sound collecting apparatus 2 and storing it in association with the date and time.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a voyage data recorder (VDR) for recording voices, radar images, etc. inside a ship, and a voyage data recording method. [Background technology]

[0002] Certain ships are required to be equipped with a VDR, which stores sensor data such as the ship's position, speed, and heading corresponding to the date and time, as well as navigation data such as voice data, radar image data, and various alarms. This navigation data is acquired and analyzed for the purpose of accident investigations, analysis of operation management by shipowners, inspections, maintenance services, etc.

[0003] In recent years, there has been a demand for higher quality navigation data from VDRs, and the volume of audio and image data in particular is becoming larger. On the other hand, since navigation data is stored in association with the recording date and time, users can acquire navigation data by specifying a date and time range. However, when the recording date and time of the desired information is unknown or ambiguous, users must acquire a sufficiently wide range of data and then find the desired information from that.

[0004] As for audio data, audio data from multiple microphone units and VHF (Very High Frequency) radios connected to the VDR is stored. However, when it is unclear or unclear which device collected the audio data containing the desired information, the audio data is retrieved from all devices to find the desired information.

[0005] On the other hand, there is known a navigation data storage device that can identify the onboard device that has emitted a warning sound (see, for example, Patent Document 1). This navigation data storage device includes a voice recording device that records voices during the voyage, a warning sound recording device that associates device names with the warning sounds that the devices emit and stores them in a database, a voice comparison device that analyzes and compares the voices recorded in the voice recording device and the warning sounds stored in the warning sound recording device, and a display device that displays the comparison results of the voice comparison device. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2012-168081 A Summary of the Invention [Problem to be solved by the invention]

[0007] Conventionally, when the recording date and time of the desired information or the device is unknown, it is necessary to obtain a wide range of voice data or voice data from all devices and find the desired information from among them, which requires a lot of time and effort. In particular, since information is often obtained on a ship equipped with a VDR and the operation time is limited based on the ship's operation schedule, a technology that allows the desired information to be obtained efficiently is required. On the other hand, the voyage data storage device described in Patent Document 1 can identify the onboard device that has issued the warning sound, but cannot efficiently obtain the desired information.

[0008] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a navigation data storage device and a navigation data storage method that enable efficient acquisition of desired information. [Means for solving the problem]

[0009] In order to solve the above problem, the invention described in claim 1 is a navigation data storage device comprising: a sound collection means for collecting sound on board a ship; a sound storage means for storing the sound data collected by the sound collection means in association with a date and time; and an event storage means for extracting at least one of a human voice and a specified sound from the sound data collected by the sound collection means as event data and storing the event data in association with the date and time.

[0010] The invention described in claim 2 is characterized in that, in the voyage data storage device described in claim 1, a plurality of sound collection means are provided, the voice storage means stores the voice data for each sound collection means, and the event storage means extracts and stores the event data for each sound collection means.

[0011] The invention described in claim 3 is a navigation data storage method characterized by comprising the steps of collecting voices on board a ship, storing the collected voice data in association with a date and time, and extracting at least one of a human voice and a specified sound from the collected voice data as event data and storing it in association with the date and time. Effect of the Invention

[0012] According to the inventions described in claims 1 and 3, voice data from within the ship is stored in association with the date and time, and human voices and predetermined sounds are stored as event data in association with the date and time. Therefore, it is possible to obtain the desired information by first checking the event data and then checking the voice data corresponding to the date and time of the specific event data. In other words, it is no longer necessary to find the desired information from a wide range of voice data as in the past; it is possible to obtain the desired information efficiently by simply checking the event data to identify the date and time and then checking the voice data.

[0013] According to the invention described in claim 2, audio data is stored for each sound collection means, and event data is stored for each sound collection means. Therefore, by first checking the event data for each sound collection means and then checking the audio data corresponding to the date and time of the specific event data of the specific sound collection means, it becomes possible to efficiently obtain the desired information even when multiple sound collection means are provided. [Brief description of the drawings]

[0014] [Figure 1] 1 is a schematic block diagram showing a voyage data storage device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, the present invention will be described based on the illustrated embodiment.

[0016] Fig. 1 is a schematic block diagram showing a navigation data storage device 1 according to an embodiment of the present invention. This navigation data storage device 1 is a device installed on a ship and stores navigation data such as sensor data such as ship position, ship speed, and bow direction, voice data, and radar image data, and differs from conventional navigation data storage devices mainly in the functions and configuration related to the storage of voice data. Therefore, the following mainly describes the functions and configuration related to the storage of voice data.

[0017] The voyage data storage device 1 mainly comprises a sound collection device (sound collection means) 2, a voice storage unit (voice storage means) 3, an event storage unit (event storage means) 4, and a data acquisition unit (data acquisition means) 5.

[0018] The sound collecting device 2 is a device that collects sounds inside the ship, and is composed of a microphone unit, a VHF radio, etc. A plurality of such sound collecting devices 2 are provided, and each sound collecting device 2 is disposed in a place where sounds are generated, for example, in the wheelhouse where the crew are located, or near a device that emits an alarm sound.

[0019] The voice storage unit 3 stores voice data collected by each sound collection device 2 in association with date and time, and stores voice data for each sound collection device 2. Specifically, it includes a data storage processing unit 31 and a voice database 32, and the data storage processing unit 31 inputs the voice data collected by each sound collection device 2 chronologically and continuously together with date and time to a storage area for each sound collection device 2 in the voice database 32. As a result, the voice data for each sound collection device 2 is stored and accumulated in the voice database 32 in chronologically and continuously associated with date and time.

[0020] The event storage unit 4 extracts human voices (conversations) and predetermined sounds as event data from the audio data collected by each sound collection device 2 and stores the data in association with the date and time, extracting and storing event data for each sound collection device 2. That is, the event storage unit 4 includes a data analysis processing unit 41 and an analysis database 42, and the data analysis processing unit 41 analyzes the audio data to extract human voices and predetermined sounds as event data.

[0021] Specifically, the system is equipped with an automatic speech recognition (ASR) function and a speech to text (STT) function to recognize human voices and language from audio data, convert the language into characters and text, and extract it as event data. It also extracts a sudden increase in sound pressure level (the occurrence of a specified sound whose sound pressure level is equal to or higher than a specified value) such as an impact sound or explosion sound as event data, and extracts a specified sound having a specific frequency component such as an alarm sound of each device on the ship as event data. Here, the sound pressure level and frequency components of such a specified sound are stored in advance, and the specified sound is extracted based on the stored sound pressure level and frequency components.

[0022] Then, the event data extracted from the voice data of each sound collection device 2 in this manner is input in chronological order together with the date and time (date and time when the event data occurred) into a storage area for each sound collection device 2 in the analysis database 42. As a result, the event data for each sound collection device 2 is stored and accumulated in the analysis database 42 in chronological order in association with the date and time.

[0023] For example, the information is stored and accumulated as follows. ·XX month XX day △ time △ minute: Impact sound occurred ·XX month XX day △ time △ minute: Alarm sound occurs · XX month XX day △ time △ minute: Human conversation "XXXXXXXXXXXXXXXXXXXX"

[0024] The data acquisition unit 5 is an interface for the user U to listen to voice data and view event data, and includes a voice data acquisition unit 51 and an analysis data display unit 52. The voice data acquisition unit 51 is a device that acquires voice data of a desired date and time of a desired sound collection device 2 from the voice database 32 and outputs and amplifies the voice data. The analysis data display unit 52 is a device that acquires event data of a desired date and time of a desired sound collection device 2 from the analysis database 42 and outputs and displays the event data. The voice data acquisition unit 51 and analysis data display unit 52 may be configured as separate entities, or may be configured as one entity in a general-purpose personal computer or the like.

[0025] Next, a method for storing voyage data using the voyage data storage device 1 having such a configuration will be described.

[0026] First, sound is collected inside the ship by each sound collection device 2 (sound collection step), and the sound data collected by each sound collection device 2 is input and stored in the sound database 32 by the data storage processing unit 31 in association with the date and time for each sound collection device 2 (sound storage step). At the same time, the sound data collected by each sound collection device 2 is analyzed by the data analysis processing unit 41, and human voices and specified sounds are extracted as event data, which is input and stored in the analysis database 42 in association with the date and time for each sound collection device 2 (event storage step). These sound collection steps, sound storage steps, and event storage steps are performed continuously at all times.

[0027] On the other hand, when the user U wants to check the voice data for accident investigation or the like, he / she first displays and checks the event data of each sound collection device 2 from the analysis database 42 on the analysis data display unit 52. Then, the user U obtains and listens to the voice data (of the surrounding date and time) corresponding to the date and time of specific event data (e.g., the occurrence of an impact sound) from the voice database 32 via the voice data acquisition unit 51, thereby acquiring and learning the desired information.

[0028] In this way, according to the navigation data storage device 1 and the navigation data storage method, voice data from within the ship is stored in association with the date and time, and human voices and specific sounds are stored as event data in association with the date and time. Therefore, it is possible to obtain the desired information by first checking the event data and then checking the voice data corresponding to the date and time of the specific event data. In other words, it is no longer necessary to find the desired information from a wide range of voice data as in the past. It is possible to obtain the desired information efficiently by simply checking the event data to identify the date and time and then checking the voice data.

[0029] Furthermore, audio data is stored for each sound collecting device 2, and event data is stored for each sound collecting device 2. For this reason, by first checking the event data for each sound collecting device 2 and then checking the audio data corresponding to the date and time of specific event data of a specific sound collecting device 2, it becomes possible to efficiently acquire the desired information even when multiple sound collecting devices 2 are provided.

[0030] Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and even if there are design changes within the scope of the present invention, they are included in the present invention. For example, in the above embodiment, both human voices and predetermined sounds are extracted and stored as event data, but only human voices or predetermined sounds may be extracted and stored as event data depending on the type of ship, the purpose of navigation, etc.

[0031] Also, although the voice data and the event data are stored simultaneously in parallel, the event data may be extracted and stored after storing and accumulating the voice data for a predetermined period of time. Also, although both the voice data acquisition unit 51 and the analysis data display unit 52 are provided in the voyage data storage device 1, one or both may be provided separately from the voyage data storage device 1. Furthermore, although the storage area of ​​the analysis database 42 is divided for each sound collection device 2 to store the event data, if it is known which sound collection device 2 the event data comes from, it is not necessary to divide the storage area of ​​the analysis database 42 for each sound collection device 2.

[0032] 1 Voyage Data Storage Device 2 Sound collection equipment (sound collection means) 3. Voice storage unit (voice storage means) 31 Data storage processing unit 32 Voice Database 4. Event storage unit (event storage means) 41 Data analysis processing section 42 Analytical Database 5 Data acquisition unit (data acquisition means) 51 Audio data acquisition unit 52 Analysis data display section

Claims

1. A sound collecting means for collecting sounds within the ship; a voice storage means for storing the voice data collected by the voice collection means in association with a date and time; an event storage means for extracting at least one of a human voice and a predetermined sound as event data from the voice data collected by the sound collection means and storing the extracted event data in association with a date and time; 13. A voyage data storage device comprising:

2. A plurality of the sound collecting means are provided, The voice storage means stores the voice data for each of the sound collection means, The event storage means extracts and stores the event data for each of the sound collection means.

2. A voyage data storage device according to claim 1.

3. collecting sounds on board a vessel; storing the collected voice data in association with date and time; extracting at least one of a human voice and a predetermined sound from the collected voice data as event data and storing the event data in association with a date and time; 1. A method for storing voyage data, comprising:

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