Electronic devices and programs, etc.

Abstract

To provide a technique better than before, for example, an electronic apparatus and the like suitable for detecting occurrence of an event in a movable body.SOLUTION: In an electronic apparatus 12a, an event detection unit 22a detects an event which may occur in a movable body in a situation where the brake of the movable body is operated under a condition that the brake of the movable body can be operated by an operator during the traveling of the movable body and the operation of changing an advancing direction of the movable body is impossible; and an information processing unit 18a performs processing of information about the event detected by the event detection unit 22a while distinguishing the same from information about another event.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an electronic device, a program, and the like. [Background technology]

[0002] Conventionally, the occurrence of an event in a moving object has been detected (see, for example, Patent Documents 1 to 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-44548 [Patent Document 2] Japanese Patent Application Laid-Open No. 2016-58921 [Patent Document 3] Patent No. 4859756 specification Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a technique superior to conventional techniques, for example, to provide an electronic device and a program suitable for detecting the occurrence of an event in a mobile object. The purpose of the present invention is not limited to this, and the applicant intends to obtain rights for configurations that aim to achieve the effects achieved by the components disclosed in the specification and drawings, etc., through divisional applications, amendments, etc. For example, this specification discloses problems in which the phrase "can be" is read as "the problem is...." Each problem is described as an independent problem, and the applicant intends to obtain rights for configurations that solve each problem separately through divisional applications, amendments, etc. Even if the problem is implicitly understood from the description in the specification, the applicant intends to include part of the configuration described in this specification in the scope of the patent claim through amendments or divisional applications. Furthermore, the applicant has disclosed configurations that solve problems that combine these independent problems, and the applicant intends to obtain rights for these configurations. [Means for solving the problem]

[0005] (1) One embodiment of the present invention is an electronic device comprising an event detection unit that detects an event that may have occurred on a moving body in a situation where an operator can brake the moving body while the moving body is moving but cannot change the direction of travel of the moving body, and an information processing unit that processes information related to the event detected by the event detection unit separately from information related to other events.

[0006] In this way, information related to an event that may have occurred on the moving body in a situation where the brakes of the moving body are activated while the operator is unable to change the direction of travel of the moving body can be processed separately from information related to other events.

[0007] (2) The moving body may have an emergency brake, the event detection unit may detect an event that may have occurred on the moving body in a situation where the emergency brake of the moving body is activated, and the information processing unit may process information related to the event that may have occurred on the moving body in a situation where the emergency brake of the moving body detected by the event detection unit is activated separately from information related to other events.

[0008] In this way, information related to an event that may have occurred in a situation where the emergency brake of the moving body is activated while the operator is unable to change the direction of travel of the moving body can be processed separately from information related to other events.

[0009] (3) The moving body may have a normal brake and an emergency brake, and the event detection unit may detect a normal event that may have occurred on the moving body in a situation where the normal brake of the moving body is activated and an emergency event that may have occurred on the moving body in a situation where the emergency brake of the moving body is activated, and the information processing unit may process information related to a normal event that may have occurred on the moving body in a situation where the normal brake of the moving body detected by the event detection unit is activated and information related to an emergency event that may have occurred on the moving body in a situation where the emergency brake of the moving body detected by the event detection unit is activated, by distinguishing between the information.

[0010] In this way, when the operator is unable to change the direction of travel of the moving body, it is possible to distinguish and process information related to a normal event that may have occurred on the moving body in a situation where the normal brakes of the moving body are activated, from information related to an emergency event that may have occurred on the moving body in a situation where the emergency brakes of the moving body are activated.

[0011] (4) The event that may occur to the moving body in a situation where the brake of the moving body is activated may include a personal injury accident caused by a person jumping into the direction of travel of the moving body.

[0012] In this way, information relating to a personal injury accident that occurs when a person jumps into the direction of travel of a moving body in a situation where the brakes of the moving body are activated and the operator is unable to change the direction of travel of the moving body can be processed separately from information relating to other events.

[0013] (5) The event detection unit may detect an event based on any one or a combination of two or more of the following: detection of the sounding of a horn, detection of the application of normal brakes of the moving body, detection of the application of emergency brakes of the moving body, detection of a collision with the moving body, and detection of the stop of the moving body.

[0014] In this way, when the operator is unable to change the direction of travel of the moving body, an event can be detected based on any one or a combination of two or more of the following: detection of the sounding of a horn, detection of the application of the normal brakes of the moving body, detection of the application of the emergency brakes of the moving body, detection of a collision with the moving body, and detection of the stopping of the moving body.

[0015] (6) The above electronic device may be a system comprising a first electronic device arranged on the moving body in front of the moving body in the direction of travel of the moving body, and a second electronic device arranged on the moving body behind the first electronic device in the direction of travel of the moving body, wherein the first electronic device has an event detection unit including a position detection unit that detects an event detection position where an event is detected, a first imaging unit that acquires video information, and the information processing unit including a first video information processing unit that processes first video information related to the event detected by the event detection unit separately from video information related to other events, and the second electronic device has a second imaging unit that acquires video information, and a second video information processing unit that processes second video information that captures the event detection position detected by the position detection unit separately from other video information.

[0016] In this way, in the second electronic device, the second video information, which is temporally consecutive to the first video information related to the event, captures the event detection position, and is likely to include video information related to the event, can be processed separately from other video information.

[0017] (7) The above electronic device may be a system comprising a first electronic device placed within the mobile body, and a second electronic device placed in a facility or equipment for the mobile body outside the mobile body or in another mobile body, wherein the first electronic device has an event detection unit including a position detection unit that detects an event detection position where an event is detected, a first imaging unit that acquires video information, and a first video information processing unit that is the information processing unit and that processes first video information related to the event detected by the event detection unit separately from video information related to other events, and the second electronic device has a second imaging unit that acquires video information, and a second video information processing unit that processes second video information that captures the event detection position detected by the position detection unit separately from other video information.

[0018] In this way, in the second electronic device, the second video information, which is captured from a different viewpoint from the first video information related to the event, captures the event detection position, and is likely to contain video information related to the event, can be processed separately from other video information.

[0019] (8) The video system may further include a display device that displays the first video information and the second video information side by side. In this way, first and second video information related to events that are consecutive in time or first and second video information related to events captured from different viewpoints can be displayed side by side, allowing the video information related to the events to be accurately recognized.

[0020] (9) The video system may further include a display device that continuously reproduces the first video information and the second video information. In this way, first and second video information related to events that are consecutive in time or first and second video information related to events captured from different viewpoints can be continuously played back, allowing the video information related to the events to be accurately recognized.

[0021] (10) The system may be one including the electronic device, wherein the mobile body is a mobile body moving on a track, the event detection unit includes a position detection unit that detects an event detection position where an event is detected, and the system may further include a management device that, when an event is detected by the event detection unit, activates a barrier located in the direction of travel of the mobile body from the event detection position detected by the position detection unit.

[0022] In this way, by operating the barrier to prevent people from entering the track, it is possible to preserve the site of an event where an event may have occurred, and by keeping the barrier operating, it is possible to encourage passersby to report the incident.

[0023] (11) The system may be a system including the electronic device, wherein the mobile body is a mobile body for transporting passengers, and further includes a management device that, when an event is detected by the event detection unit, announces information related to the event to passengers of the mobile body. In this way, when an event is likely to occur, an appropriate announcement can be made to passengers of the vehicle.

[0024] (12) The system may be one including the electronic device, wherein the event detection unit includes a location detection unit that detects the event detection location where the event is detected, and the system may further include a management device that, when an event is detected by the event detection unit, sends a message to a mobile terminal located in the vicinity of the event detection location detected by the location detection unit. In this way, when there is a possibility that an event has occurred, a message can be appropriately sent to people in the vicinity of the event detection position.

[0025] (13) The management device may transmit a message with different content depending on the distance from the event detection position detected by the position detection unit to the mobile terminal. In this way, it is possible to transmit a message with appropriate content according to the distance from the event detection position to the mobile terminal.

[0026] (14) One embodiment of the present invention is an electronic device that can be attached to a moving body, and includes an illumination unit that illuminates the inside of the moving body, an imaging unit that acquires video information, a receiving unit that receives event detection information that indicates the detection of an event, and a video information processing unit that processes video information related to the event indicated by the event detection information received by the receiving unit separately from video information related to other events.

[0027] In this way, even electronic devices that do not have the function to detect the occurrence of an event can receive event detection information indicating the detection of an event, and process video information related to the event separately from video information related to other events.

[0028] (15) The system may be a system including a first electronic device that is the electronic device described above, or the system may be a system including a second electronic device that is the electronic device described above in (14), and the receiving unit may receive event detection information indicating the detection of an event by the event detection unit.

[0029] (16) One embodiment of the present invention is an electronic device comprising: an event detection unit that detects an event based on the detection of the operation of an emergency brake in a moving body that runs on a track and uses electronic brakes; and an information processing unit that processes information related to the event detected by the event detection unit separately from information related to other events, wherein the event detection unit has an acceleration detection unit that detects the acceleration of the moving body; and an emergency brake detection unit that detects the operation of the emergency brake in the moving body when the acceleration detected by the acceleration detection unit is equal to or greater than a predetermined emergency brake threshold and continues for a predetermined time threshold or longer.

[0030] In this way, in a moving body using an electronic brake, activation of the emergency brake causes a constant, relatively large acceleration to continue for a relatively long period of time, and activation of the emergency brake is detected when the acceleration is equal to or greater than a predetermined emergency brake threshold and continues for a predetermined period of time or longer.Therefore, activation of the emergency brake can be properly detected while being distinguished from normal acceleration and deceleration operations and the occurrence of vibrations in the moving body.

[0031] (17) It is preferable that the emergency brake threshold is set to approximately 0.15G. In this way, in a mobile body using electronic brakes, acceleration due to normal acceleration and deceleration and the occurrence of vibrations is limited to approximately 0.1 G, and in a mobile body transporting passengers, acceleration due to emergency braking is limited to approximately 0.2 to 0.25 G in order to protect the passengers. By setting the emergency brake threshold to approximately 0.15 G, it is possible to properly detect emergency braking while distinguishing it from normal acceleration and deceleration and the occurrence of vibrations in the mobile body.

[0032] (18) The time threshold may be set to a few seconds. In this way, in a moving body, acceleration occurs instantaneously when vibration occurs, but by setting the time threshold to several seconds, it is possible to properly detect the operation of the emergency brake while distinguishing it from the occurrence of vibration in the moving body.

[0033] (19) The time threshold may be set based on the stopping time required for the moving body to stop, calculated from the speed of the moving body when the acceleration of the moving body becomes equal to or greater than the emergency brake threshold and the acceleration of the moving body.

[0034] In this way, in a moving body that uses an electronic brake, activation of the emergency brake causes a constant acceleration to continue until the moving body stops.By setting a time threshold based on the stopping time until the moving body stops, which is calculated from the speed of the moving body when the acceleration of the moving body becomes equal to or greater than the emergency brake threshold, the activation of the emergency brake can be properly detected.

[0035] (20) The emergency brake detection unit may be configured to detect the operation of the emergency brake in the moving body when the acceleration detected by the acceleration detection unit is within a range of approximately 0.2 to 0.25 G and continues for a predetermined time period or longer than a threshold value.

[0036] In this way, in a mobile body using electronic brakes, acceleration during normal acceleration and deceleration and the occurrence of vibrations is limited to approximately 0.1 G, and in a mobile body transporting passengers, acceleration is limited to approximately 0.2 to 0.25 G even when the emergency brake is activated to protect the passengers.However, when the acceleration is within the range of approximately 0.2 to 0.25 G and continues for a predetermined time period or longer, the activation of the emergency brake in the mobile body is detected.Therefore, the activation of the emergency brake can be properly detected while being distinguished from normal acceleration and deceleration and the occurrence of vibrations in the mobile body.

[0037] (21) It is preferable that the emergency brake threshold or the time threshold can be set arbitrarily. In this way, by appropriately setting the emergency brake threshold or time threshold depending on the mobile body, it is possible to appropriately detect the operation of the emergency brake.

[0038] (22) The event detection unit may detect the occurrence of a severe event in the moving object when the acceleration detected by the acceleration detection unit is equal to or greater than a predetermined severe event threshold.

[0039] In this way, in a moving body using an electronic brake, the acceleration is relatively small during normal acceleration and deceleration operations and the occurrence of vibrations, but the occurrence of a heavy event is detected when the acceleration is equal to or greater than a predetermined heavy event threshold, so the occurrence of a heavy event can be detected appropriately.

[0040] (23) The heavy event threshold may be set to approximately 0.21 G. In this way, in a mobile body using electronic brakes, the acceleration due to normal acceleration and deceleration operation and the occurrence of vibration is limited to approximately 0.1 G, and in a mobile body transporting passengers, even the activation of the emergency brake limits the acceleration to approximately 0.2 to 0.25 G in order to protect the passengers. By setting the heavy event threshold to approximately 0.21 G, the occurrence of a heavy event can be properly detected while being distinguished from the normal acceleration and deceleration operation and the occurrence of vibration in the mobile body.

[0041] (24) The electronic device may further include an imaging unit that acquires video information, and the information processing unit may process video information covering a predetermined time range that includes an emergency brake activation time, which is the time during which the emergency brake is activated as detected by the emergency brake detection unit, separately from other video information. In this way, video information relating to an event that may have occurred during emergency braking of a mobile object can be processed separately from other video information.

[0042] (25) It is preferable to provide a program for causing a computer to realize the functions of any of the above electronic devices.

[0043] The inventions described in (1) to (25) above can be combined in any way. For example, a configuration may be created by adding at least a portion of the configuration of at least one of the inventions described in (2) and subsequent items to all or a portion of the configuration of the invention described in (1). In particular, an invention may be created by adding at least a portion of the configuration of at least one of the inventions described in (2) and subsequent items to the invention described in (1). Furthermore, any configuration may be extracted from the inventions described in (1) to (25) and combined. The applicant of this application intends to obtain rights to inventions including these configurations. Furthermore, even if a description is made of "in the case of..." or "when...," it is not intended to describe a configuration that is limited to that case or time. These are merely examples of better configurations, and the applicant intends to obtain rights to configurations that are not in these cases or times. Furthermore, any descriptions that specify an order are not limited to this order. Configurations in which some parts are deleted or the order is changed are also disclosed, and the applicant intends to obtain rights to them. [Effects of the Invention]

[0044] The present invention provides a technology that is superior to conventional technology, for example, an electronic device and a program suitable for detecting the occurrence of an event in a mobile object. [Brief explanation of the drawings]

[0045] [Figure 1] 1 is an overall view showing a system according to an embodiment of the present invention; [Figure 2] 1 is a schematic diagram showing a train according to an embodiment of the present invention; [Figure 3] 1 is a block diagram showing a drive recorder according to an embodiment of the present invention; [Figure 4] 1 is a block diagram showing an in-vehicle monitoring camera with integrated lighting according to an embodiment of the present invention; [Figure 5] FIG. 4 is a graph showing the acceleration of a train according to an embodiment of the present invention. [Figure 6] FIG. 2 is a schematic diagram illustrating the intercommunication of event triggers in one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0046] An embodiment of the present invention will be described with reference to FIGS. In this embodiment, an event that may have occurred in a moving body in a situation where the brakes of the moving body are applied by an operator while the moving body is traveling and the operator is unable to change the direction of travel of the moving body is detected, and information related to the detected event is processed separately from information related to other events. In this way, information related to an event that may have occurred in a moving body in a situation where the brakes of the moving body are applied by an operator while the operator is unable to change the direction of travel of the moving body can be processed separately from information related to other events.

[0047] Here, the brake operation of a moving body by an operator can be performed by the driver of the moving body, as well as by a passenger if the moving body is transporting passengers, or by a remote operator if the moving body is remotely controlled. Examples of a state in which an operator cannot change the direction of travel of a moving body include a state in which an operator cannot change the direction of travel of a moving body due to the structure of the moving body, such as a train, monorail, linear motor car, or elevator, because the moving body runs on a track, as well as a state in which an operator cannot temporarily change the direction of travel of a moving body, such as an automobile that can switch between manual and automatic operation and in which steering is disabled during automatic operation. In a state in which an operator cannot change the direction of travel of a moving body, if an obstacle such as a person or object appears in the moving body's direction of travel, the moving body cannot change its direction of travel to avoid the obstacle, and the operator must apply the brakes, for example, by applying the brakes of the moving body. This state is a state in which the brakes of the moving body are applied.

[0048] The overall configuration of the system of this embodiment will be described with reference to FIGS. In this embodiment, the communication method between the electronic devices in each mobile object and the management device at the management center is LTE. The communication method between each electronic device in the facility or equipment for the mobile object and the relay device is LAN, and the communication method between the relay device and the management device at the management center is LTE. This reduces the number of communication contracts and running costs, making it possible to reduce communication expenses, compared to when LTE is the only communication method between each electronic device in the facility or equipment for the mobile object and the management device at the management center.

[0049] The communication methods employed in the present embodiment are those considered applicable by the inventors at the time of filing this application, and do not limit the specific communication methods applicable to the present invention. For example, instead of LTE, public lines compatible with 5G or other communication methods, or dedicated lines physically or logically isolated from public lines, may be used. In the case of public lines, communication fees may be charged to the operator managing the electronic device or mobile device based on the amount of data transmitted (communication volume). The LAN may include Wi-Fi (registered trademark) (e.g., password-protected Wi-Fi (registered trademark)) or other LANs. Compared to using public lines, using a LAN may offer advantages such as no or low communication fees based on communication volume, high communication speeds, and fewer congestion-related problems.

[0050] 1 and 2, in this embodiment, each train 10a, 10b (an example of a moving body) is provided with a drive recorder 12a, 12b (the drive recorder 12a is an example of an electronic device and a first electronic device, and the drive recorder 12b is an example of a second electronic device), a plurality of lighting-integrated interior monitoring cameras 42a, 42b (the lighting-integrated interior monitoring camera 42a is an example of an electronic device and a second electronic device, and the lighting-integrated interior monitoring camera 42b is an example of the second electronic device), and a plurality of interior monitoring cameras 52a, 52b (an example of the second electronic device). The drive recorders 12a, 12b are disposed ahead of the trains 10a, 10b in the traveling direction, and the interior monitoring cameras 42a, 52a, 42b, 52b are disposed behind the drive recorders 12a, 12b in the traveling direction of the trains 10a, 10b. A drive recorder (an example of an imaging device) is an electronic device that has a function of taking pictures (which may also be called an image capture) and a function of recording the captured images, but unless otherwise specified, the drive recorder of this embodiment may be replaced with an imaging device that does not have a function of recording images itself. The function of recording images may be to record images in an internal storage device such as an eMMC or a hard disk drive, or may be to record images in a removable storage device such as an SD card. The imaging device may have a function of transmitting images in combination with or instead of recording images in these storage devices.

[0051] Communication is performed via wireless LTE between the drive recorders 12a, 12b and multiple interior monitoring cameras 42a, 52a, 42b, 52b installed on each of the trains 10a, 10b and a server 72 (an example of a management device) serving as a central management device in the management center 70. Multiple interior monitoring cameras 62 (an example of a second electronic device) are installed in a station premises 60, which is a facility for the trains 10a, 10b. Communication is performed via wired or wireless LAN between the multiple interior monitoring cameras 62 installed in the station premises 60 and a mobile router or access point 80 serving as a relay device. Communication is also performed via wired or wireless LTE between the mobile router or access point 80 and the server 72 in the management center 70.

[0052] In addition, when the train 10a is located within or near a station 60, the drive recorders 12a, 12b and multiple in-car surveillance cameras 42a, 52a, 42b, 52b installed on the trains 10a, 10b communicate with the mobile router or access point 80 via wireless LAN.

[0053] In this embodiment, communication is carried out between multiple on-site surveillance cameras 62 installed within the station premises 60 and the server 72 of the management center 70 via wired or wireless LAN via a mobile router or access point 80 and wired or wireless LTE, which makes it possible to reduce the number of communication contracts and cut running costs compared to when communication is carried out only via wired or wireless LTE.

[0054] Furthermore, when the trains 10a, 10b are located within or near the station premises 60, communication is performed by wired or wireless LTE between the drive recorders 12a, 12b and the multiple interior monitoring cameras 42a, 52a, 42b, 52b installed on the trains 10a, 10b and the server 72 of the management center 70 via a mobile router or access point 80 via wireless LAN, so the amount of communication via wired or wireless LTE can be reduced compared to when communication is performed only via wired or wireless LTE. In particular, when the server 72 of the management center 70 is located within the station premises 60, communication is possible only via wireless LAN, so the amount of communication via wired or wireless LTE can be sufficiently reduced.

[0055] A plurality of equipment monitoring cameras (an example of a second electronic device) installed on crossing gates, which are equipment for trains 10a and 10b, can also be configured in a similar manner to the plurality of on-site monitoring cameras 62 installed within station premises 60.

[0056] As a result, communication costs can be significantly reduced for the entire system.

[0057] The drive recorder 12a of this embodiment will be described with reference to FIGS. The electronic device of this embodiment detects an event that may have occurred on a moving body in a situation where the brakes of the moving body are activated, and processes information related to the detected event separately from information related to other events.

[0058] As shown in FIGS. 2 and 3, the drive recorder 12a (an example of an electronic device and a first electronic device) is installed in the lead car of a train 10a (an example of a moving object). In the drive recorder 12a, the imaging unit 14a (an example of a first imaging unit) captures an image of the area ahead of the train 10a to acquire video information. The sound detection unit 16a detects sound to acquire audio information. The event detection unit 22a detects an event that may have occurred on the train 10a when the brakes of the train 10a are applied. The video information processing unit 18a (an example of a first video information processing unit) and audio information processing unit 20a, which serve as information processing units, process video information (an example of first video information) and audio information related to the event detected by the event detection unit 22a, respectively, separately from video information and audio information related to other events. The communication unit 38a communicates with a server 72 of a management center 70.

[0059] Event detection by the event detection unit 22a of this embodiment will be described in detail. In this embodiment, a possible event that may occur on the train 10a in a situation where the brakes of the train 10a are activated is a personal injury accident caused by a person jumping into the direction of travel of the train 10a. The brakes in a situation where the brakes of the train 10a are activated may be any type of brake for braking the train 10a, such as a normal brake, an emergency brake, or both a normal brake and an emergency brake. In the event of a personal injury accident caused by a person jumping into the direction of travel of the train 10a, there is a high possibility that a warning horn will sound, the normal brakes of the train 10a will be activated, the emergency brakes of the train 10a will be activated, a collision with the front of the train 10a will occur, or the train 10a will stop. Therefore, the event detection unit 22a detects the occurrence of an event by detecting at least one of these events. A collision with the front of the train 10a may be detected by detecting an impact on the front of the train 10a.

[0060] In this embodiment, the normal brake is activated by pressing the brake lever a predetermined amount, and the emergency brake is activated by pressing the brake lever further beyond the predetermined amount. Therefore, when the emergency brake is activated, the normal brake and the emergency brake are activated consecutively. Furthermore, an emergency brake switch may be used to activate the emergency brake separately from the brake lever for activating the normal brake.

[0061] When the sounding of the alarm, the application of the normal brakes of the train 10a, the application of the emergency brakes of the train 10a, a collision with the front of the train 10a, and the stopping of the train 10a, or the application of the normal brakes of the train 10a, the application of the emergency brakes of the train 10a, the sounding of the alarm, a collision with the front of the train 10a, and the stopping of the train 10a are detected in succession, there is a high probability that an accident resulting in injury or death has actually occurred due to a person jumping into the direction of travel of the train 10a. For this reason, the event detection unit 22a may be configured to detect an event only when a series of these events are detected in succession.

[0062] Furthermore, the event detection unit 22a may be configured to identify and detect the type of event depending on the detected phenomenon. For example, the event detection unit 22a may detect an emergency brake operation as a serious event (an example of an emergency event) when it detects an emergency brake operation, and may detect a normal brake operation as a minor event (an example of a normal event) when it detects an emergency brake operation. Here, a serious event is more likely to be an accident resulting in injury or death caused by a person jumping into the direction of travel of the train 10a than a minor event.

[0063] Furthermore, the event detection unit 22a may be configured to identify and detect the type of event depending on whether or not each event is detected. For example, the event detection unit 22a may detect a heavy event when the following events are detected: a horn sound, the application of the normal brakes of the train 10a, the application of the emergency brakes of the train 10a, a collision with the front of the train 10a, and the stopping of the train 10a; a medium event when the horn sound, the application of the normal brakes of the train 10a, and the application of the emergency brakes of the train 10a are detected but a collision with the front of the train 10a or the stopping of the train 10a is not detected; and a light event when the horn sound is detected but no other events are detected. Here, a heavy event is more likely to have involved a personal injury accident caused by a person jumping into the direction of travel of the train 10a than a medium event, and a medium event is more likely to have involved a light event than a medium event.

[0064] Regarding the detection of the horn sounding, the event detection unit 22a detects the horn sounding by analyzing the sound detected by the sound detection unit 16a with the sound analysis unit 24a. Here, the event detection unit 22a distinguishes between and detects the horns of the subject train 10a and other trains 10b, such as an oncoming train. The event detection unit 22a may also detect the horn sounding by directly detecting the operation of an operation switch for sounding the horn from an operation signal. Furthermore, the event detection unit 22a may detect the operation of the operation switch for sounding the horn by image recognition of a video captured inside the lead car. Since the video includes the operator operating the operation switch, the event detection unit 22a detects the operation by image recognition of the video.

[0065] Regarding the detection of the normal brake or emergency brake of the train 10a, the event detection unit 22a detects the operation of the normal brake or emergency brake of the train 10a based on the acceleration of the train 10a detected by the acceleration detection unit 26a. Detection of the emergency brake of the train 10a based on the acceleration of the train 10a will be described in detail later. The event detection unit 22a may also detect the operation of the normal brake or emergency brake by directly detecting the operation of a brake lever or the like for activating the normal brake or emergency brake from an operation signal. Furthermore, the event detection unit 22a may detect the operation of a brake lever or the like for activating the normal brake or emergency brake by image recognition of video captured inside the leading car. Since the video includes the operator operating the brake lever or the like, the event detection unit 22a detects the operation by image recognition of the video.

[0066] Regarding the detection of a collision with the front of the train 10a, the event detection unit 22a detects an impact on the front of the train 10a based on the acceleration of the train 10a detected by the acceleration detection unit 26a, thereby detecting a collision with the front of the train 10a. Detection of an impact on the front of the train 10a based on the acceleration of the train 10a will also be described in detail later. The event detection unit 22a may also detect a collision with the front of the train 10a by image recognition of an image of the front of the train 10a captured by the imaging unit 14a.

[0067] Regarding the detection of the stop of the train 10a, the event detection unit 22a detects the stop of the train 10a based on the speed of the train 10a detected by the speed detection unit 28a.

[0068] When the event detection unit 22a detects an event, the event detection unit 22a detects the event detection position where the event was detected using the position detection unit 30a (an example of a position detection unit), and detects the event detection time where the event was detected using the time detection unit 32a. Then, the event detection unit 22a transmits event detection information indicating the detection of the event from the communication unit 38a to the server 72 of the management center 70. The event detection information includes event detection position information, event detection time information, and, if the type of event is to be identified, event type information.

[0069] In addition, the event detection unit 22a may record dangerous locations such as locations where personal injury accidents due to people jumping into the direction of travel of the train 10a have actually occurred in the past, and locations where it is easy to enter the tracks, and detect an event when the position detection unit 30a detects that the train 10a is in the dangerous location or a specified dangerous area that includes the dangerous location (for example, within a specified distance range from the dangerous location).

[0070] The processing of video information and audio information by the video information processing unit 18a and audio information processing unit 20a, which serve as information processing units in this embodiment, will be described in detail below.

[0071] The video information is information indicating video, and may be video information indicating moving images, for example, in MPEG (Moving Picture Experts Group) format (e.g., MPEG2, MPEG4), AVI, MOV, WMV, etc. The video information may include information on the shooting date and time, shooting location, etc. as Exif (Exchangeable image file format) information. The video information may be video information indicating a still image, or may be video information generated by repeatedly shooting at predetermined time intervals, for example. The sound information is information indicating sound, and the sound information processing unit 20a may process sound information in either analog or digital format.

[0072] When the train 10a is traveling, the power supply of the drive recorder 12a is basically ON, and the imaging unit 14a acquires video information. The video information processing unit 18a processes, from the video information acquired by the imaging unit 14a, video information within a predetermined time range including the event detection time detected by the time detection unit 32a of the event detection unit 22a as event video information, distinguishing it from other video information. For example, when the video information processing unit 18a detects an event by detecting the activation of the emergency brake of the train 10a, it may treat as event video information video information within a predetermined time range including the time when the emergency brake activation was detected and including the emergency braking duration during which the emergency brake activation continued (an example of an emergency brake activation duration). The emergency braking duration will be described in detail later. Similarly, when the video information processing unit 18a detects an event by detecting the sounding of a horn, the application of the normal brakes of the train 10a, a collision with the front of the train 10a, or the train 10a stopping, the event video information may be video information of a predetermined time range that includes the time when the sounding of the horn is detected and encompasses the duration of the horn, a predetermined time range that includes the time when the application of the normal brakes of the train 10a is detected and encompasses the duration of the normal brake application, a predetermined time range that includes the time when the collision with the front of the train 10a is detected, and a predetermined time range that includes the time when the stopping of the train 10a and encompasses the stop time from the start to the end of the stop.

[0073] The video information processing unit 18a records the video information captured by the imaging unit 14a and erases the oldest video information in order, but records the event video information separately as an event record to prevent it from being erased, and transmits it from the communication unit 38a of the drive recorder 12a to the server 72 of the management center 70.

[0074] In one modified example, the video information processing unit 18a records video information captured by the imaging unit 14a with reduced accuracy and sequentially erases the oldest video information, but records event video information separately as an event record without reducing accuracy and preventing erasure, and transmits it from the communication unit 38a of the drive recorder 12a to the server 72 of the management center 70. Note that the reduction in accuracy of the video information may be achieved, for example, by a process that can reduce the storage capacity of the video information or the data transmission capacity, and specifically, by at least one of reducing the number of frames by thinning out frames and reducing the resolution. For example, the event video information may be highly accurate video information with a high frame rate or high resolution.

[0075] In one modified example, the video information processing unit 18a records video information captured by the imaging unit 14a, transmits the video information from the communication unit 38a of the drive recorder 12a to the server 72 of the management center 70, and then sequentially deletes the video information. However, event video information is transmitted from the communication unit 38a of the drive recorder 12a to the server 72 of the management center 70, distinguishing it from other normal video information. Note that when the train 10a is located in or near a station premises 60, the video information may be transmitted from the communication unit 38a of the drive recorder 12a to the server 72 of the management center 70 via a wired or wireless LTE connection via a mobile router or access point 80 via wireless LAN. Furthermore, when the server 72 of the management center 70 is located in the station premises 60, the transmission may be performed only via wireless LAN. Furthermore, if the event detection unit 22a detects an event when the train 10a is at a danger point or danger area, the video information may be transmitted from the communication unit 38a of the drive recorder 12a to the server 72 of the management center 70 at the time the train 10a passes through the danger point or danger area, and then the video information may be erased.

[0076] When event detection unit 22a identifies and detects the type of event, video information processing unit 18a in one modified example processes video information related to the event detected by event detection unit 22a separately from video information related to other events, according to the type of event identified by event detection unit 22a. For example, video information processing unit 18a processes video information related to a serious event (an example of an emergency event) detected by detecting emergency braking as event video information with a longer time range and higher accuracy than video information related to a minor event (an example of a normal event) detected by detecting normal braking.

[0077] The sound information processing by the sound information processing unit 20a is similar to the video information processing by the video information processing unit described above. For example, the sound information processing unit 20a processes, among the sound information acquired by the sound detection unit 16a, sound information within a predetermined time range including the event detection time detected by the time detection unit 32a of the event detection unit 22a as event sound information, distinguishing it from other sound information. When the sound information processing unit 20a detects an event by detecting the sound of a horn, it may also treat sound information within a predetermined time range that includes the time when the sound of the horn was detected and the duration of the horn that the horn continued as event sound information.

[0078] The sound information processing unit 20a records sound information detected by the sound detection unit 16a and sequentially erases the oldest sound information, but it records event sound information separately as an event record to prevent it from being erased, and transmits it from the communication unit 38a of the drive recorder 12a to the server 72 of the management center 70.

[0079] In one modified example, the sound information processing unit 20a records sound information detected by the sound detection unit 16a with reduced accuracy and erases the oldest sound information in order, but records event sound information separately as an event record without reducing accuracy and so that it will not be erased, and transmits it from the communication unit 38a of the drive recorder 12a to the server 72 of the management center 70.

[0080] In one modified example, the sound information processing unit 20a records sound information detected by the sound detection unit 16a, transmits it from the communication unit 38a of the drive recorder 12a to the server 72 of the management center 70, and then sequentially erases it. However, event sound information is distinguished from other normal sound information and transmitted from the communication unit 38a of the drive recorder 12a to the server 72 of the management center 70.

[0081] When the event detection unit 22a identifies and detects the type of event, the sound information processing unit 20a in one modified example processes sound information related to the event detected by the event detection unit 22a separately from sound information related to other events, according to the type of event identified by the event detection unit 22a. For example, the sound information processing unit 20a treats sound information related to a serious event (an example of an emergency event) detected by detecting emergency braking as event sound information with a longer time range and higher accuracy than sound information related to a minor event (an example of a normal event) detected by detecting normal braking.

[0082] A system including an in-vehicle monitoring camera with integrated lighting according to this embodiment will be described with reference to FIGS. 1, 2 and 4. FIG.

[0083] In this embodiment, the system may include a first camera (e.g., a fluorescent lamp replacement camera, e.g., interior monitoring cameras 42a and 42b) for a train that has the capability of outputting video information captured at an externally commanded time via a network (e.g., LTE), a second camera (e.g., a drive recorder installed in the lead car, e.g., drive recorders 12a and 12b, or a camera built into the top of the train door, e.g., interior monitoring cameras 52a and 52b) for a train (e.g., train 10a) that has the capability of outputting video information for a predetermined time range including the time of impact detection, and a center computer (e.g., server 72; the center computer may be a smartphone or other computer device) that has the capability of acquiring video information from the first camera and the second camera. Upon receiving impact information from the second camera, the center computer transmits a signal (e.g., a video request signal) to the first camera to acquire a video range including the time of the impact. Then, the center computer may acquire, for example, image information of the above-mentioned image range from the first camera during that period.

[0084] This embodiment may be a system that includes multiple cameras installed relatively in front and relatively behind a vehicle, such as a train or railcar, that takes a certain amount of time to pass a specific point. The system identifies the video captured when the rear camera passes a point triggered by the front camera and extracts the video from both points. The multiple cameras may be, for example, drive recorders 12a, 12b installed in the front car and interior monitoring cameras 42a, 52a, 42b, 52b installed in the rear car. Alternatively, the front cameras may be drive recorders 12a, 12b installed in the front car and a drive recorder installed in the rear car. The system may be, for example, a device with a viewer installed that extracts the video from both points and then displays them side by side. The viewer may be, for example, a video display program that is standard on the operating system of a personal computer or the like. However, a dedicated video display program (also referred to as a dedicated viewer) for the camera of this embodiment installed in the vehicle may be desirable for security reasons.

[0085] In addition, in this embodiment, for example, each car of a train or train (e.g., train 10a) may be provided with at least one camera. If the train or train is a 10-car train, it may be provided with a function for continuously playing back the 10 images captured by the drive recorder 12a mounted on each car, as specified above. It is particularly preferable to complement and play back the images. "Specified as specified above" may refer to specifying the image when the rear camera passes the point where the trigger was activated by the front camera, as described above. "Continuous" may refer to being continuous in time. The function for continuously playing back the images may be provided in the camera or viewer.

[0086] The lighting-integrated in-car surveillance camera 42a (an example of an electronic device and a second electronic device) of this embodiment is installed inside a train 10a (an example of a moving object) and records criminal acts, nuisances, etc., inside the train, such as molestation and theft. The surveillance camera alone does not have the function of detecting an event, and therefore cannot process video information related to an event separately from video information related to other events. The lighting-integrated in-car surveillance camera 42a of this embodiment receives event detection information indicating the detection of an event, and processes video information related to the event indicated by the received event detection information separately from video information related to other events.

[0087] As shown in FIGS. 2 and 4, an interior monitoring camera 42a with integrated lighting is attached to the ceiling of the train 10a. The monitoring cameras 42a are installed side by side at regular intervals at the front and rear of each car in the direction of travel, resulting in a large number of monitoring cameras 42a being installed side by side at regular intervals at the front and rear of each car in the direction of travel throughout the entire car. Each monitoring camera 42a is integrally equipped with a lighting unit 50a (an example of a lighting unit) to illuminate the interior of the car. An imaging unit 44a (an example of an imaging unit and a second imaging unit) captures images of the interior and exterior of the car through the car windows to acquire video information. The imaging unit 44a may acquire video information at least when the lighting unit is on, but may also acquire video information when the lighting unit is off. When a server 72 (an example of a management device) of the management center 70 receives event detection information indicating the detection of an event from the drive recorder 12a, the server 72 transmits the event detection information to the multiple monitoring cameras 42a. The communication unit 46a (an example of a receiving unit) of each surveillance camera 42a receives event detection information transmitted from the server 72 of the management center 70. The event detection information includes event detection position information and event detection time information. When the communication unit 46a receives the event detection information, the video information processing unit 48a (an example of a video information processing unit and a second video information processing unit) processes the video information (an example of video information and a second video information) related to the event indicated by the event detection information, distinguishing it from video information related to other events.

[0088] The processing of video information by the video information processing unit 48a of this embodiment will be described in detail below. The video information processing unit 48a processes, as event video information, video information within a predetermined time range including the event detection time detected by the time detection unit 32a of the event detection unit 22a, among the video information acquired by the imaging unit 44a, as event video information, distinguishing it from other video information. For example, the video information processing unit 48a records the video information captured by the imaging unit 44a with reduced accuracy, transmits it from the communication unit 38a of the drive recorder 12a to the server 72 of the management center 70, and then sequentially deletes it, but transmits the event video information from the communication unit 38a of the drive recorder 12a to the server 72 of the management center 70 without reducing accuracy, distinguishing it from other video information.

[0089] The video information from the in-vehicle surveillance camera 42a records criminal acts such as molestation and theft, nuisance behavior, etc. inside the vehicle, and therefore needs to be transmitted to and recorded on the server 72 of the management center 70. If all video information were to be transmitted and recorded with high accuracy, the amount of communication and storage capacity would be enormous. In this embodiment, only event video information is transmitted and recorded with high accuracy, which reduces the amount of communication and storage capacity.

[0090] 1, the server 72 of the management center 70 displays or continuously plays back, on a display device 74, event video information (an example of first video information) received from the drive recorder 12a and a large number of event video information (an example of second video information) received from a large number of interior lighting-integrated surveillance cameras 42a, in order of front to back in the direction of travel inside the train 10a. This allows the event video information to be accurately recognized, and the situation of a personal injury accident caused by a person jumping into the direction of travel of the train 10a to be grasped in detail.

[0091] Here, for the drive recorder 12a and the multiple lighting-integrated in-vehicle surveillance cameras 42a, video information is processed based on the event detection time detected by the time detection unit 32a of the event detection unit 22a of the drive recorder 12a, so it is preferable to synchronize the time in order to process the video information accurately.

[0092] In one modification, the video information processing unit 48a processes, among the video information acquired by the imaging unit 44a, video information capturing an event detection position detected by the position detection unit 30a of the event detection unit 22a as event video information, distinguishing it from other video information. For example, the video information processing unit 48a transmits the event video information from the communication unit 38a of the drive recorder 12a to the server 72 of the management center 70, distinguishing it from other video information, without reducing accuracy. In this modification, the server 72 of the management center 70 also displays or continuously plays, on the display device 74, the event video information received from the drive recorder 12a (an example of first video information) and the event video information received from the multiple lighting-integrated interior monitoring cameras 42a (an example of second video information), arranged in order of front to back along the direction of travel within the train 10a. In this way, a large number of pieces of video information that are consecutive in time and capture images of positions where an event may have occurred are displayed side by side or played back consecutively, so that the event video information can be accurately recognized and the situation of a personal injury accident caused by a person jumping into the direction of travel of the train 10a can be grasped in detail. When a large number of pieces of event video information are played back consecutively, the video information may be supplemented as appropriate so that the video information continues smoothly.

[0093] A number of interior monitoring cameras 52a are installed inside the train 10a, including above the doors of the train 10a and at the couplings of the train 10a. These monitoring cameras 52a may detect events and transmit event detection information instead of the drive recorder 12a. Alternatively, they may receive event detection information, similar to the lighting-integrated interior monitoring camera 42a, and process video information related to the event indicated by the event detection information separately from video information related to other events. Furthermore, if a drive recorder capturing images of the rear of the train 10a is installed in the rear car of the train 10a, the drive recorder may receive event detection information, similar to the lighting-integrated interior monitoring camera 42a, and process video information related to the event indicated by the event detection information separately from video information related to other events. In this way, when an event is detected by the drive recorder 12a, the event detection information may be transmitted to all of the lighting-integrated interior monitoring cameras 42a, the interior monitoring camera 52a, and the drive recorder in the rear car of the train 10a.

[0094] In addition, the event detection information is transmitted from the drive recorder 12a to the server 72 of the management center 70, and the event detection information is transmitted from the server 72 of the management center 70 to the lighting-integrated interior surveillance camera 42a, but the event detection information may also be transmitted directly from the drive recorder 12a to the lighting-integrated interior surveillance camera 42a.

[0095] Furthermore, although the video information processing unit 48a processes the video information by itself, the server 72 of the management center 70 may remotely control the video information processing unit 48a to process the video information.

[0096] Referring to FIG. 1, further control executed by the server 72 of the management center 70 upon receiving the event detection information from the drive recorder 12a will be described. When the server 72 (an example of a management device) of the management center 70 receives event detection information from the drive recorder 12a, it transmits the event detection information to the premises monitoring camera 62 in the station premises 60, the facility monitoring camera at the crossing gate, the drive recorder 12b of another train 10b such as an oncoming train, and the in-car monitoring cameras 42b, 52b (all of which are examples of second electronic devices) that may be capturing the event detection position. The drive recorder 12b or each monitoring camera 42b, 52b, 62 that has received the event detection information processes, as event video information (an example of second video information), video information that captures the event detection position indicated by the event detection position information, among the video information acquired by the imaging unit (an example of a second imaging unit), in the same way as the above-mentioned lighting-integrated in-car monitoring camera 42a, as event video information (an example of second video information), distinguishing it from other video information. For example, the video information processing unit (an example of a second video information processing unit) transmits the event video information from the communication unit of the drive recorder 12b or each surveillance camera 42b, 52b, 62 to the server 72 of the management center 70, distinguishing it from other video information without reducing accuracy.

[0097] The server 72 of the management center 70 displays side by side or continuously plays back on the display device 74 the event video information (an example of first video information) received from the drive recorder 12a and the event video information (an example of second video information) received from the other drive recorder 12b or the monitoring cameras 42b, 52b, 62. In this way, a large number of pieces of video information captured from different viewpoints of positions where an event may have occurred are displayed side by side or continuously played back, so that the event video information can be accurately recognized and the situation of a personal injury accident caused by a person jumping into the direction of travel of the train 10a can be grasped in detail.

[0098] The server 72 of the management center 70 receives event detection information from the drive recorder 12a, and when it receives event video information from the drive recorder 12b or each of the monitoring cameras 42b, 52b, 62, it notifies the relevant parties such as the fire department and the police of the event detection information and event video information, including the event detection position and the event detection time. In this way, the relevant parties such as the fire department and the police can take initial action based on the event detection information and event video information, including the event detection position and the event detection time, and can quickly and appropriately deal with a personal injury accident caused by a person jumping into the direction of travel of the train 10a.

[0099] When the server 72 of the management center 70 receives the event detection information from the drive recorder 12a, it announces to the passengers on the train 10a that there is a possibility that a personal injury accident has occurred due to a person jumping into the direction of travel of the train 10a. This allows for prompt and appropriate announcements to be made to the passengers on the train 10a.

[0100] When the server 72 of the management center 70 receives the event detection information from the drive recorder 12a, it activates a crossing gate located in the direction of travel of the train 10a from the event detection position indicated by the event detection position information. In this way, by activating the crossing gate to prevent people from entering the tracks, it is possible to protect the event occurrence site, and by keeping the crossing gate activated, it is possible to encourage passersby to report the event.

[0101] When the server 72 of the management center 70 receives event detection information from the drive recorder 12a, it transmits a message to mobile devices located near the event detection location indicated by the event detection location information at the event detection time indicated by the event detection time information. The content of the message varies depending on the distance from the event detection location to the mobile device. In this embodiment, a personal injury accident caused by a person jumping into the direction of travel of the train 10a is detected as an event. Therefore, to mobile devices located near the event detection location, a message for mental care or a message requesting the provision of witness information is transmitted, assuming that the mobile device witnessed the personal injury accident. To mobile devices located relatively close to the event detection location, a message is transmitted informing the mobile device that facilities such as stations and railroad crossings near the event detection location may be unavailable. To mobile devices located relatively far from the event detection location, a message is transmitted informing the mobile device of a possible train delay.

[0102] The control by the server 72 of any of the management centers 70 described above may be performed only when an event is detected that is highly likely to result in an actual personal injury accident caused by a person jumping into the direction of travel of the train 10a, and when the type of event is identified, different controls may be performed depending on the type of event.

[0103] In the above-described embodiment, the server 72 serving as the central management device of the management center 70 is used as the management device, but an appropriate management device installed in the train 10a may also be used, or a mobile terminal such as a smartphone of a conductor or the like may also be used as the management device.

[0104] With reference to Figs. 3 and 5, detection of emergency brake operation in the train 10a based on the acceleration of the train 10a of this embodiment will be described.

[0105] The following explanation is based on the assumption that the train 10a is capable of operating an electronically controlled emergency brake. When an emergency brake is activated, a moving object such as a train may suddenly brake in a manner different from that of a general passenger car, for the purpose of ensuring passenger safety, etc.

[0106] The moving body in this embodiment is a train 10a (an example of a moving body) that runs on a track as a railway and uses electronic brakes, and an emergency brake operation on the train 10a is detected based on the acceleration of the train 10a using a drive recorder 12a (an example of an electronic device and a first electronic device) as an electronic device. In this embodiment, when the acceleration of the train 10a is equal to or greater than a predetermined emergency brake threshold and continues for a predetermined time period or longer, it is detected that the emergency brake has been operated on the train 10a.

[0107] As shown in FIG. 3 , in this embodiment, the event detection unit 22a (an example of an event detection unit) includes an acceleration detection unit 26a (an example of an acceleration detection unit) that detects the acceleration of the train 10a. The collision detection unit 34a detects an impact on the front of the train 10a based on the acceleration of the train 10a detected by the acceleration detection unit 26a, thereby detecting a collision of an object, such as a person, with the front of the train 10a. Here, the drive recorder 12a is attached to the inner surface of the windshield of the train 10a, and the acceleration detected by the acceleration detection unit 26a is, to be precise, the acceleration of the windshield of the train 10a. When an object, such as a person, collides with the front of the train 10a, an impact occurs on the front of the train 10a, and a large acceleration is instantaneously generated on the windshield of the train 10a. Therefore, it is possible to detect a collision of an object, such as a person, with the front of the train 10a based on the acceleration detected by the acceleration detection unit 26a. The emergency brake detection unit 36a (an example of an emergency brake detection unit) detects that the emergency brake has been applied to the train 10a when the acceleration detected by the acceleration detection unit 26a is equal to or greater than a predetermined emergency brake threshold and continues for a predetermined time period or longer. Note that it is possible to measure the excess time during which the acceleration detected by the acceleration detection unit 26a is equal to or greater than the predetermined emergency brake threshold, and to treat this excess time as the emergency brake duration during which the emergency brake operation continues (an example of an emergency brake application time).

[0108] The detection of emergency braking by the emergency braking detection unit 36a will be described in detail. Here, through experiments, it was found that the magnitude of the acceleration measured in the train 10a is roughly as follows. Normal acceleration and deceleration: about 0.1G Vibrations on railway bridges, switching points, etc.: Instantaneous small acceleration of less than 0.1G Collision with an object weighing approximately 60-70 kg: 3-2 G Emergency brake: 0.2-0.25G

[0109] The train 10a is carrying passengers, and even when emergency braking is applied in an emergency, the acceleration is limited to the above-mentioned range of approximately 0.2 to 0.25 G for the safety of the passengers. During emergency braking, the acceleration is maintained at a constant level within the above-mentioned range of approximately 0.2 to 0.25 G by electronic control.

[0110] Referring to Figure 5, we will explain the change in acceleration when a person jumps into the direction of travel of train 10a, collides with the front of train 10a, activates the emergency brake, and stops train 10a. Before braking, train 10a is traveling at a constant speed of approximately 62 km / h, with an acceleration of approximately 0 G. However, small accelerations of approximately ±0.1 G or less occur momentarily due to vibrations from railway bridges, switching points, etc. When the driver of train 10a detects a person jumping into the direction of travel of train 10a, he or she depresses the brake lever to activate the normal brake and then the emergency brake. With the start of emergency braking, the acceleration of train 10a changes to -0.2 G. During this time, the acceleration of train 10a changes significantly from -0.21 to 3.14 G due to the collision of a person weighing approximately 60 to 70 kg with the front of train 10a. During emergency braking, electronic control maintains the acceleration of train 10a at a constant acceleration of approximately -0.2 G. The speed of train 10a before the brake operation is approximately 62 km / h, and the acceleration of train 10a is maintained at a constant acceleration of approximately -0.2 G, so the speed of train 10a becomes 0 km / h in approximately 12 seconds. Note that as train 10a stops, the acceleration of train 10a changes from approximately -0.2 G to approximately 0 G in 1 / 10 seconds or less.

[0111] In this embodiment, the emergency braking threshold for acceleration is set to approximately 0.15 G, and the time threshold is set to several seconds. If acceleration exceeding approximately 0.15 G continues for several seconds or more, emergency braking operation is detected. As described above, normal acceleration and deceleration of the train 10a results in an acceleration of approximately 0.1 G, and even vibrations occurring at railway bridges, switching points, etc. only cause momentary small accelerations of approximately 0.1 G or less. However, acceleration during emergency braking operation is maintained at a constant level of approximately 0.2 to 0.25 G. Therefore, under the above conditions, emergency braking operation can be appropriately detected while being distinguished from normal acceleration and deceleration of the train 10a and the occurrence of vibrations.

[0112] In one variation of this embodiment, the emergency braking threshold for acceleration is set to approximately 0.15 G, and the time threshold is set based on the calculated stopping time (an example of a stopping time) from the speed and acceleration of the electric train 10a at the time the acceleration exceeds the emergency braking threshold. For example, the time threshold may be set to the stopping time itself or approximately one-third of the stopping time. As described above, the normal acceleration and deceleration of the electric train 10a is approximately 0.1 G. Even vibrations at railway bridges, switching points, etc. only cause momentary small accelerations of approximately 0.1 G or less. In contrast, the acceleration during emergency braking is maintained at a constant level of approximately 0.2 to 0.25 G until the electric train 10a stops. Therefore, under the above conditions, emergency braking can be appropriately detected while being distinguished from normal acceleration and deceleration of the electric train 10a and vibrations.

[0113] In one modification of this embodiment, an emergency brake operation is detected when the acceleration is within a range of approximately 0.2 to 0.25 G and continues for a predetermined time period equal to or longer than a threshold value.

[0114] In one modification of this embodiment, the emergency brake threshold and the time threshold can be set arbitrarily. In this way, by appropriately setting the emergency brake threshold and the time threshold depending on the train 10a, it is possible to appropriately detect the actuation of the emergency brake.

[0115] Furthermore, in this embodiment, the event detection unit 22a detects a heavy event when the acceleration detected by the acceleration detection unit 26a exceeds a predetermined heavy threshold. In this embodiment, the heavy event threshold is set to approximately 2.1 G. As described above, normal acceleration and deceleration of the train 10a results in acceleration of approximately 0.1 G, and acceleration due to vibrations at railway bridges, switching points, etc. is small, at approximately 0.1 G or less, whereas acceleration during emergency braking is approximately 0.2 to 0.25 G. Therefore, under the above conditions, heavy events such as emergency braking can be appropriately detected while being distinguished from normal acceleration and deceleration of the train 10a and the occurrence of vibrations.

[0116] The moving body may be, for example, a moving body with an electronically controlled brake, and in one variation of this embodiment, an elevator may be used as the moving body. An elevator normally ascends and descends at an acceleration that is not felt by the body, and in the event of emergency braking, the electronically controlled brake is applied. If the elevator is ascending or descending at a certain speed, it will come to a complete stop the next moment (super emergency). Alternatively, the elevator will move to a stop position on a specified floor and stop there.

[0117] The overall configuration of the system of this embodiment can also be applied to a car sharing system. For example, communication is performed between the drive recorder of each shared car and a server serving as a central management device at a management center via wireless LTE, and communication is performed between surveillance cameras in a parking lot or other facility for shared cars and the server at the management center via wired or wireless LTE via a mobile router or access point serving as a relay device via wired or wireless LAN. Furthermore, when a shared car is located in a parking lot or other facility, communication is also performed between the drive recorder of each shared car and the server serving as a central management device at the management center via wired or wireless LTE via a mobile router or access point serving as a relay device via wireless LAN.

[0118] In this embodiment, as shown in FIG. 6, the drive recorder (referred to as "recorder" in FIG. 6) may search for the nearest drive recorder based on location information such as GPS, share the event trigger, record video information before and after the event trigger as an event record, and transmit (also referred to as "transmit") the event-recorded video information to a server, as a mutual communication of an event recording trigger (trigger), an event recording, and a vehicle. Trigger information from the drive recorder in front may be transmitted to a drive recorder installed inside the vehicle or a drive recorder capturing the rear of the vehicle, and used as an event trigger for the entire vehicle. The event trigger may also be transmitted to drive recorders at stations, railroad crossings, oncoming vehicles, etc., to acquire video information from various angles. The event trigger may be the above-described event recording trigger or another trigger.

[0119] Another embodiment of the present invention relates to programs that cause a computer to implement the functions of components such as the drive recorders 12a and 12b (examples of the electronic device and the first electronic device), the lighting-integrated interior monitoring cameras 42a and 42b (examples of the electronic device and the second electronic device), and the server 72 (an example of a management device) of the above embodiment. Such programs are stored in a storage device such as an eMMC or a hard disk built into the device, or a storage device such as an SD card removable from the device, and are read into a storage area such as RAM of the device by a processing unit such as a CPU of the device and executed, thereby implementing the functions of the programs. The functions of components such as the drive recorders 12a and 12b (examples of the electronic device and the first electronic device), the lighting-integrated interior monitoring cameras 42a and 42b (examples of the electronic device and the second electronic device), and the server 72 (an example of a management device) of the above embodiment may be implemented by hardware resources, software resources, or a combination thereof.

[0120] The scope of the present invention is not limited to the structures expressly described in the specification, but also encompasses combinations of various aspects of the invention disclosed herein. While the structures of the invention sought to be patented are specified in the accompanying claims, it is the intention of the present inventors to claim structures disclosed herein that are not currently specified in the claims.

[0121] The present invention is not limited to the configurations described in the above-described embodiments. The components of each of the above-described embodiments and variations may be arbitrarily selected and combined. Furthermore, any component of each embodiment or variation may be arbitrarily combined with any component described in the Summary for Solving the Problems of the Invention or any component embodying any component described in the Summary for Solving the Problems of the Invention. The present invention also intends to obtain rights to these configurations through amendments or divisional applications of this application. Even if a description is made of "in the case of..." or "when...," this does not mean that the configuration is limited to that case or time. Configurations that are not limited to those cases or times are also disclosed, and the present invention intends to obtain rights to them. Furthermore, any descriptions that specify an order are not limited to this order. Configurations in which some parts are deleted or the order is changed are also disclosed, and the present invention intends to obtain rights to them.

[0122] Furthermore, we intend to obtain rights to the overall design or partial design by converting the application to a design registration. The drawings depict the entire device in solid lines, but they also include partial designs claimed for parts of the device. For example, a partial design can be a partial design for a part of the device, or a part of that part. A partial design can be a part of the device, or a part of that part. We intend to obtain rights to not only the overall design, but also partial designs in which any part of the solid line portion of the drawing is drawn as a broken line. Furthermore, all of the modules, components, and parts inside the device's casing shown in the drawings are subject to independent commerce, and we intend to similarly obtain rights to them by converting the application to a design registration. [Explanation of symbols]

[0123] 10a, 10b...Train 12a, 12b...Dash recorder 14a...Image capture unit 16a...sound detection unit 18a...video information processing unit 20a...sound information processing unit 22a...Event detection unit 24a...Sound analysis unit 26a...Acceleration detection unit 28a...speed detection unit 30a...position detection unit 32a...time detection unit 34a...collision detection unit 36a...Emergency brake detection unit 38a...Communication unit 42a, 42b...In-vehicle surveillance camera with integrated lighting 44a...Image capture unit 46a...Communication unit 48a...Video information processing unit 50a...Lighting unit 52a, 52b...In-vehicle monitoring cameras 60...Station premises 62...Surveillance camera inside the station 70...Management center 72...Server 74...Display device 80...Mobile router or access point

Claims

1. an event detection unit that detects an event that may have occurred in the moving body in a situation where an operator can brake the moving body while the moving body is traveling but the brakes of the moving body are activated in a state where the operator cannot change the direction of travel of the moving body; and an information processing unit that processes information related to the event detected by the event detection unit separately from information related to other events, the electronic device being arranged in the moving body; and a facility or equipment for the moving body outside the moving body or another moving body. a second electronic device disposed within the the first electronic device includes the event detection unit including a position detection unit that detects an event detection position where an event is detected, a first imaging unit that acquires video information, and a first video information processing unit that is part of the information processing unit and that processes first video information related to the event detected by the event detection unit separately from video information related to other events; the second electronic device includes a second imaging unit that acquires video information; and a second video information processing unit that processes the second video information obtained by capturing an image of the event detection position detected by the position detection unit, distinguishing it from other video information. system.

2. further comprising a display device that displays the first video information and the second video information side by side; The system of claim 1 .

3. further comprising a display device that continuously reproduces the first video information and the second video information; The system of claim 1 .

4. A system including an electronic device having an event detection unit that detects an event that may have occurred in a moving body in a situation where an operator can brake the moving body while the moving body is traveling but cannot change the direction of travel of the moving body, and an information processing unit that processes information related to the event detected by the event detection unit separately from information related to other events, the event detection unit includes a position detection unit that detects an event detection position at which an event is detected; a management device that, when an event is detected by the event detection unit, transmits a message to mobile terminals located in the vicinity of the event detection position detected by the position detection unit; the management device transmits a message with different content depending on the distance from the event detection position detected by the position detection unit to the mobile terminal; system.

5. A program for causing a computer to realize the functions of the electronic device according to any one of claims 1 to 4.

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