JP7782982B2 - Home Surveillance System - Google Patents

Description

The present invention relates to a platform monitoring system for monitoring station platforms.

One known example of an alarm system that uses beacons for monitoring is one that sounds an alarm depending on the distance between a beacon terminal carried by a user and a beacon placed within a station (see Patent Document 1).

However, in the case of the warning system disclosed in Patent Document 1, the risk assessment is made by the beacon terminal on the user's side based on the distance to the beacon, so the accuracy of the assessment depends on the accuracy of the beacon, which may not be appropriate. Furthermore, there is a possibility that the station monitors may not be able to accurately grasp that a risk has occurred.

Japanese Patent Application Laid-Open No. 2018-176982

The present invention was made in consideration of the above points, and aims to provide a platform monitoring system that, when monitoring station platforms, enables accurate judgments and reliable notification of the judgment results when issuing warnings to users from the station.

To achieve the above objective, the platform monitoring system comprises an imaging unit that acquires image data for a specified area of the platform; an image processing unit that extracts the location of pedestrians from the image data acquired by the imaging unit; a judgment unit that determines whether pedestrians are in a dangerous location based on the extraction results of the image processing unit; and a notification unit that communicates with items carried by pedestrians within the specified area and issues a warning corresponding to the judgment results of the judgment unit.

In the above-mentioned platform monitoring system, the monitoring side can determine whether pedestrians on the platform are in a dangerous position based on image analysis in the image processing unit, and the notification unit communicates with pedestrians' carried items within a specified range to issue warning notifications, enabling accurate judgments and reliable notification of the results of those judgments.

In a specific aspect of the present invention, the notification unit is installed within a predetermined range and performs short-range wireless communication, sending notifications to portable objects within the communication range. In this case, by sending notifications to portable objects within the communication range via short-range wireless communication, it is possible to alert pedestrians carrying the objects.

In another aspect of the present invention, the notification unit includes multiple communication devices installed on the platform corresponding to multiple predetermined areas separated along the direction of train travel, and each of the multiple communication devices independently issues a warning to a portable item. In this case, notifications can be sent in units of the separated predetermined areas.

In yet another aspect of the present invention, multiple communication devices are installed corresponding to the stopping ranges of each vehicle that makes up the train. In this case, processing from image capture to notification can be performed on a vehicle-by-vehicle basis.

In yet another aspect of the present invention, the imaging unit includes multiple cameras arranged on the platform along the direction of train travel, the image processing unit has multiple image processing circuits corresponding to the multiple cameras, and the judgment unit outputs judgment results individually to multiple communication devices based on the extraction results of the multiple image processing circuits. In this case, the extraction results of each image processing circuit can be processed collectively by the judgment unit and notified via each communication device.

In yet another aspect of the present invention, the imaging unit includes multiple cameras arranged on the platform along the direction of train travel, the image processing unit has multiple image processing circuits corresponding to the multiple cameras, and the judgment unit has multiple judgment circuits corresponding to the multiple image processing circuits, and the multiple judgment circuits output judgment results to the corresponding multiple communication devices. In this case, processing up to notification based on an image captured by one camera and processing up to notification based on an image captured by another camera can be performed individually for each corresponding camera, image processing circuit, and judgment circuit.

In yet another aspect of the present invention, the portable object issues an alert in response to a notification from the notification unit by changing at least one of sound, vibration, and light. In this case, the notification mode can be optimized depending on the pedestrian's condition, such as whether or not they have a disability, and it can be made possible to distinguish between notifications about other content, such as incoming call notifications, and alert notifications.

In yet another aspect of the present invention, a speaker is provided that broadcasts a warning based on the judgment result of the judgment unit, and the warning is issued to the portable object by the notification unit and broadcast by the speaker in parallel. In this case, paralleling the notification by the speaker and the notification to the portable object allows for more accurate warning notifications.

In yet another aspect of the present invention, an integrated control unit is provided that receives the judgment results output by the judgment unit and controls the entire device. In this case, the integrated control unit at the station can grasp the overall situation.

1 is a conceptual diagram showing a station in which a platform monitoring system according to an embodiment is installed. FIG. 1 is a conceptual diagram for explaining the operation of a platform monitoring system at a station. 1A and 1B are conceptual diagrams for explaining an example of the configuration and specific operation of a platform monitoring system. FIG. 1 is a block diagram showing an example of the configuration of a platform monitoring system. FIG. 2 is a block diagram showing an example of the configuration of one monitoring unit in the home monitoring system. FIG. 1 is a conceptual diagram for explaining the flow from detection to notification by the home monitoring system. 10A to 10C are data tables showing examples of various data handled during processing in the home monitoring system. 10 is a flowchart illustrating a series of processes in the home monitoring system.

The platform monitoring system according to one embodiment will now be described with reference to Figure 1 and other figures. Figure 1 shows the platform PF of a station where a platform monitoring system 500 according to this embodiment has been installed. As shown in the figure, the components that make up the platform monitoring system 500 are installed along the direction of travel of the train TR, indicated by arrow A1, on the station platform PF, enabling monitoring of an area (danger area) DD on the platform PF, which is the end of the track where pedestrians and others may fall. Note that area DD is shown in the figure as partial areas DD1 to DD4, divided by multiple hatching patterns.

To enable monitoring of the above-described area DD, the home monitoring system 500 includes multiple monitoring units 100 and a comprehensive control unit 90.

Multiple monitoring units 100 are arranged along arrow A1, i.e., the direction of travel of train TR. In the example shown, two monitoring units 100A and 100B are included, but the number of monitoring units 100 can be changed as appropriate depending on the area to be monitored (the range of platform PF based on the length of trains that can depart and arrive), etc.

Each monitoring unit 100 (e.g., monitoring unit 100A) is composed of, for example, a camera CA that constitutes the imaging unit 10, a relay connection box BR, a monitor 30, a speaker 40, a notification unit 50, etc. The relay connection box BR also houses an image processing terminal 20, etc., for performing analysis processing on images captured by the imaging unit 10 (see Figures 3 to 5, etc.).

The monitoring unit 100 performs image analysis on the image captured by the camera CA of the area DD, and if there is a risk of a pedestrian falling onto the tracks, in addition to issuing an alert using the speaker 40, it also uses the notification unit 50, which communicates via short-range wireless communication, to notify the pedestrian on a portable device such as a smartphone. The monitoring unit 100 can also display images captured by the camera CA on the monitor 30. The monitor 30 can also display images during times when the platform monitoring system 500 is not monitoring the station, such as when a train TR is stopped and passengers are getting on and off.

The comprehensive control unit 90, which is composed of, for example, a hub 91, a management-side judgment control unit 92, and a comprehensive control panel 93, monitors the entire platform PF. To this end, the comprehensive control unit 90 is connected to each monitoring unit 100 via a relay connection box BR, for example, at the hub 91, enabling it to acquire various information, such as information on the monitoring results of each monitoring unit 100. The management-side judgment control unit 92 is also connected to a train detection unit DT, which is composed of various sensors, to confirm the presence of a train TR (track presence confirmation) and to detect its arrival and departure. The comprehensive control panel 93 manages various information and performs overall control of the entire platform PF. For example, the comprehensive control panel 93 determines whether or not to monitor pedestrians using each monitoring unit 100 based on the track presence confirmation results of the management-side judgment control unit 92, and notifies each monitoring unit 100 of the result of this decision via the hub 91. In other words, while the train TR is stopped, passengers are getting on and off, so there is no need for each monitoring unit 100 to monitor pedestrians, and during this time, the operation of each monitoring unit 100 is suspended, but when the train TR departs, each monitoring unit 100 starts (resumes) monitoring pedestrians again.

In particular, in this embodiment, in the platform monitoring system 500 configured as described above, the area DD captured by the camera CA is divided into partial areas DD1 to DD4, indicated by hatching, and monitored individually. In the example shown, a four-car train TR is assumed, and the four partial areas DD1 to DD4 are formed to correspond to the expected stopping range of one of the cars CR that make up the train. Furthermore, the area DD, consisting of partial areas DD1 to DD4 as a whole, covers the range required for monitoring to prevent pedestrians from falling.

The notification unit 50 is configured with multiple (two) communication devices, a first communication device 50α and a second communication device 50β, to transmit signals via short-range wireless communication in each of the divided partial areas DD1 to DD4 and to notify portable devices (such as smartphones) within the range of each area, i.e., the communication range. More specifically, the first communication device 50α and the second communication device 50β that make up the notification unit 50 of monitoring unit 100A are arranged to correspond to partial areas DD1 and DD2, respectively, and the first communication device 50α and the second communication device 50β that make up the notification unit 50 of monitoring unit 100B are arranged to correspond to partial areas DD3 and DD4. As a result, as shown in Figure 2, the multiple (four) communication devices 50α, 50β constituting the notification unit 50 each transmit a warning signal within a range conceptually indicated by a concentric circular figure. The transmission range (receivable range) of each communication device 50α, 50β includes the corresponding partial areas DD1 to DD4. That is, the multiple communication devices 50α, 50β provided in each monitoring unit 100A, 100B are installed corresponding to the partial areas DD1 to DD4, which are predetermined areas divided along the direction of travel of the train TR on the platform PF. Each communication device independently transmits a warning signal to a pedestrian's personal item (such as a smartphone). Therefore, when a pedestrian carrying a personal item (such as a smartphone) capable of communicating with each communication device 50α, 50β is present in the partial areas DD1 to DD4, communication between them becomes possible. For example, the communication range is thought to be approximately 20 m if the length of each of the partial areas DD1 to DD4 is roughly the length of one train car. Accordingly, the communication range extending concentrically from the center position of each of the partial areas DD1 to DD4 can be set to have a radius of approximately 10 m.

In the above case, multiple communication devices 50α, 50β are installed corresponding to the stopping ranges of each vehicle CR that makes up the train TR. Meanwhile, as shown in the figure, the speaker 40 is positioned midway between communication device 50α and communication device 50β, allowing audio output to be transmitted to the areas covered by both devices.

Below, we will explain an example of the configuration and specific operation of the platform monitoring system 500, with reference to Figure 3.

As shown in FIG. 3(A), to enable the above-described operational mode, the platform monitoring system 500 is configured such that the entire area DD is captured by the camera CA provided in each monitoring unit 100A, 100B as the imaging unit 10, i.e., by multiple (two) cameras CA. Of these, the camera CA on the monitoring unit 100A side captures partial areas DD1 and DD2, which correspond to the rear half of the platform PF relative to the direction of travel (forward) of the train TR, while the camera CA on the monitoring unit 100B side captures partial areas DD3 and DD4, which correspond to the front half of the platform PF. Furthermore, the images captured by each camera CA are divided into the partial areas DD1 to DD4 and analyzed. In other words, a portion of the image captured by the camera CA on the monitoring unit 100A side captures the area corresponding to partial area DD1, and another portion captures the area corresponding to partial area DD2. Similarly, part of the image captured by camera CA on the monitoring unit 100B side shows the range corresponding to partial area DD3, and another part shows the range corresponding to partial area DD4.

Furthermore, in the platform monitoring system 500, the various components of the monitoring unit 100A are connected to the image processing terminal 20 housed in the relay connection box BR. That is, when the image processing terminal 20 acquires image data from the imaging unit 10 (camera CA), it analyzes it, and if the analysis results indicate that there is an area requiring a warning, it transmits a warning signal from a communication device (e.g., communication device 50α) installed in the relevant area of the notification unit 50. In parallel with this, the speaker 40 issues a warning. In the monitoring unit 100B, a similar operation is performed by the operation of the image processing terminal 20.

Also, in the monitoring units 100A and 100B, the image processing terminal 20 may perform processing to display image data from the imaging unit 10 (camera CA) on the monitor 30. As shown in the figure, the monitor 30 is provided, for example, at a position corresponding to the very rear of the train, and is composed of, for example, multiple display screens, and image data from the image processing terminal 20 in each monitoring unit 100A and 100B is displayed on each of the multiple display screens, making it available to the conductor to check the situation on the platform when the train TR is stopped (see Figure 1, etc.).

With the above configuration, as shown in FIG. 3(B), for example, a pedestrian PD carrying a communication terminal SM such as a smartphone as a portable object capable of short-range wireless communication with the notification unit 50 is notified that they are in a dangerous location via the communication terminal SM through voice (sound) VO, vibration VB, and display (light) DS on the display unit SMd. In other words, the communication terminal SM as a portable object issues an alert in response to the notification from the notification unit 50 by changing at least one of the sound, vibration, and light.

The illustration shows, as an example, a situation in which a pedestrian PD in area DD3 receives a notification from the first communication device 50α of the monitoring unit 100B. In this case, an audio notification VOs is also made from the speaker 40.

Figure 4 is a block diagram showing an example configuration of the platform monitoring system 500 described above. The figure also shows an example configuration of a communication terminal SM, which is a portable item carried by the pedestrian PD.

As shown in the figure, and as previously described, in each monitoring unit 100 of the home monitoring system 500, the image processing terminal 20 is connected to the various components that make up the monitoring unit 100, enabling the input and output of various information. In the example shown, the relay connection box BR that houses the image processing terminal 20 is provided with, in addition to the image processing terminal 20, a sound source device SD (amplifier AP) for the speaker 40 and an I/O board BO for connecting to the notification unit 50, overall control unit 90, and other components; the image processing terminal 20 is connected to the speaker 40, notification unit 50, overall control unit 90, and other components via the sound source device SD and I/O board BO.

Meanwhile, the communication terminal SM includes a short-range wireless communication unit SMt, a display unit SMd, a touch panel SMp, a speaker SMs, a vibrator SMv, a memory unit SMm, and a main control unit SMc. The communication terminal SM is configured by installing a dedicated app in advance on a smartphone carried by a pedestrian (user) PD through appropriate operations such as using the touch panel SMp. In other words, when using the station, the dedicated app is already running, enabling the communication terminal SM to communicate with the notification unit 50 via short-range wireless communication. While various methods can be used for short-range wireless communication, here, as an example, short-range wireless communication using Bluetooth (registered trademark) is possible, and the communication range setting described above has also been configured in advance.

The main control unit SMc of the communication terminal SM communicates with the notification unit 50, i.e., performs short-range wireless communication, as needed, via the short-range wireless communication unit SMt, and, depending on the communication results, performs operations such as sound output from the speaker SMs, vibration from the vibrator SMv, and display on the display unit SMd, according to the content previously registered in the memory unit SMm. Note that Figure 4 shows the communication terminal SM notifying the first communication device 50α of the monitoring unit 100B, in line with the example described with reference to Figure 3(B).

Furthermore, the image processing terminal 20 is connected to the overall control unit 90, and when communication with the communication terminal SM is performed via the notification unit 50 as described above, the communication content is sent to the overall control unit 90. This makes it possible for the overall control unit 90 to grasp the various operational histories for monitoring in multiple monitoring units 100.

It is also possible to consider the home monitoring system 500 to include the communication terminal SM. In other words, the home monitoring system 500 can be considered to include the communication terminal SM as a component.

Figure 5 is a block diagram showing an example configuration of monitoring unit 100A, which is one of the monitoring units in the home monitoring system 500. Here, we will particularly explain in more detail an example configuration of the image processing terminal 20.

To enable the above-described operations, the image processing terminal 20 comprises a main control unit 21, which is composed of, for example, a CPU and electronic circuits, and a memory unit 22, which is composed of various storage devices. Furthermore, the main control unit 21 comprises an image processing unit GP, which is an image processing circuit that extracts the position of the pedestrian PD from the image data acquired by the imaging unit 10, and a judgment unit JD, which is a judgment circuit that determines whether the pedestrian PD is in a dangerous position based on the extraction results of the image processing unit GP. Alternatively, the main control unit 21 can be considered to function as these functions.

The image processing unit GP is composed of a first pedestrian extraction unit PE1 that extracts pedestrians in partial region DD1 (see Figure 1, etc.) from the acquired image, and a second pedestrian extraction unit PE2 that extracts pedestrians in partial region DD2.

The memory unit 22 also stores area extraction data DA1 for extracting areas corresponding to partial areas DD1 and DD2 from the image data acquired by the imaging unit 10, person extraction data DA2 for extracting a person image from the image data to enable determination of the presence or absence of a person, and notification data DA3 for issuing a notification via the notification unit 50 and speaker 40.

Although not shown or explained, the monitoring unit 100B can also be configured in a similar manner to the above. That is, when viewing the monitoring units 100A and 100B as a whole, the home monitoring system 500 has multiple (two) image processing units (image processing circuits) GP corresponding to the multiple (two) cameras CA, and the judgment unit (judgment circuit) JD is configured with multiple (two) judgment units (judgment circuits) JD corresponding to the multiple (two) image processing units (image processing circuits) GP, and the multiple (two) judgment units (judgment circuits) JD output judgment results to the corresponding multiple (four) communication devices 50α and 50β, respectively.

Below, with reference to Figure 6, an example of a series of operations for monitoring by the platform monitoring system 500 or the monitoring unit 100, i.e., the flow from detecting a pedestrian to notifying the pedestrian, is shown.

In FIG. 6, first, the imaging unit 10 (camera CA) of the monitoring unit 100 captures an image of a predetermined area (area DD) of the platform PF and acquires image data GD1, which it then transmits to the image processing unit GP of the image processing terminal 20 that constitutes the monitoring unit 100. The image processing unit GP analyzes the acquired image data GD1 to confirm whether a person (pedestrian) is captured. If a person (pedestrian) is extracted, information on their position (pedestrian position) PS1 is also extracted. Next, the determination unit JD of the image processing terminal 20 determines whether a danger has occurred based on the extraction result of the image processing unit GP. The determination result by the determination unit JD is transmitted to the notification unit 50 as necessary, and the notification unit 50 sends a notification (warning notification) based on the determination result to a communication terminal SM located in area DD.

The results of the judgment by the judgment unit JD are also notified to the speaker 40 and the general control unit 90. The speaker 40 broadcasts a warning based on the judgment result. In other words, the warning notification to the communication terminal SM by the notification unit 50 and the warning broadcast by the speaker 40 are made in parallel.

In addition, the overall control unit 90 controls the entire platform monitoring system 500 by accepting the judgment results output from the judgment unit JD and managing various information.

Figure 7 is a data table illustrating various data handled during various processes in the home monitoring system 500 described above. For example, Figure 7(A) is a data table showing an example of the pre-registration contents for a smartphone to function as a communication terminal SM. Figure 7(B) is a data table showing an example of the transmission ID sent from the notification unit 50 to the communication terminal SM. Figure 7(C) is a data table showing an example of an operation pattern (alert mode pattern) corresponding to the transmission ID stored in the communication terminal SM. Figure 7(C) also shows an example of an audio operation pattern among the operation modes of the communication terminal SM.

First, as shown in FIG. 7(A), when a pedestrian (user) uses their smartphone or other device as a communication terminal SM, the pedestrian (user) registers, for example, an ID (smartphone ID) for identifying the smartphone as pre-registration information. Furthermore, in this example, in addition to the smartphone ID, pre-selected information regarding how the communication terminal SM will operate when issuing a notification is linked to the smartphone ID and registered. More specifically, for audio, volume and language can be pre-registered, and for display, display size and language can be selected. Furthermore, for vibration, vibration patterns can be selected, allowing for differentiation from normal incoming calls, emails, and the like based on differences in vibration patterns. If only announcements were made through the speaker 40 as described above, there is a possibility that accurate notification to those in danger may not be provided depending on the surrounding environment of the home PF. For this reason, in this embodiment, as described above, a smartphone or the like carried by a pedestrian is used as the communication terminal SM, and the pedestrian is allowed to select the notification mode themselves, thereby enabling more accurate warnings. In this case, it is also possible to select the notification mode taking into account, for example, visual or hearing impairments. In addition to the above, various information about the person carrying the smartphone communication terminal SM, i.e., the pedestrian PD, may also be linked as pre-registered information. The data shown in FIG. 7(A) may be managed, for example, by the overall control unit 90.

As shown in FIG. 7(B), the content of the notification sent from the notification unit 50 to the communication terminal SM via short-range wireless communication is predetermined based on the location of the notification, the degree of risk of falling based on the results of image analysis, and other factors, and is pre-registered as multiple patterns (patterns α, β, ...) corresponding to each notification content. Furthermore, as shown in FIG. 7(C), on the communication terminal SM side, reference data for the above patterns and pre-registered audio behavior options is stored in the memory unit SMm. Thus, when a transmission ID specifying one of the multiple patterns α, β, ... shown in FIG. 7(B) is transmitted from the notification unit 50, the communication terminal SM that receives it initiates an operation corresponding to the transmitted ID and the operation pattern corresponding to the pre-selected audio, vibration, and display behavior shown in FIG. 7(A). For example, as shown in white on a black background in the figure, if the audio data corresponding to the user's notification selection mode selected in advance in Figure 7(A) is "standard volume" and the notification is given that the content corresponding to "pattern γ" from the multiple patterns shown in Figure 7(B) should be output, then in Figure 7(C) the corresponding audio data is extracted and output (played) from speaker SMs as the notification content. The same applies to display and vibration operations.

The series of processes for monitoring operations in the home monitoring system 500 will be explained below with reference to the flowchart shown in Figure 8. Here, the operation of each section will be explained, focusing on the operational processing in the main control section 21 of the image processing terminal 20.

First, the main control unit 21 of the image processing terminal 20 checks whether a command to stop monitoring operations has been received from the general control unit 90 (step S101). Specifically, if the train detection unit DT detects that a train TR is on track and is stopped at a station with passengers getting on or off, operation is stopped to prevent monitoring by the platform monitoring system 500 and the associated alert operations. If it is determined in step S101 that a command to stop operation has been received (step S101: Yes), the main control unit 21 stops operation (step S102) and waits for a command to resume operation (step S103).

When the general control unit 90 issues a command to unsuspend (resume monitoring) the monitoring operation upon the departure of the train TR (step S103: Yes), the main control unit 21 starts (resumes) the operation (step S104), checks whether the image data from the imaging unit 10 has been updated (step S105), and if there has been no update, i.e., if no new images have been acquired (step S105: No), the operation returns to step S101.

On the other hand, if an update has occurred in step S105 (step S105: Yes), the main control unit 21 causes the image processing unit GP to extract people from the newly acquired image data (step S106), and the judgment unit JD determines whether a person is present in the danger area, i.e., area DD (step S107).

If, in step S106, no human presence is confirmed in the danger area (step S107: No), the main control unit 21 notifies the overall control unit 90 that no abnormality exists (step S108) and returns to operation from step S101.

On the other hand, if the presence of a person is confirmed in the danger area in step S107 (step S107: Yes), the main control unit 21 performs an alarm operation in the area where the presence of a person is confirmed (e.g., area DD3 in Figure 3(B)) using the notification unit 50 and speaker 40 (step S109). At the same time, a notification that an abnormality has occurred is sent to the overall control unit 90 (step S110). In this case, information regarding the abnormality, such as its location, may also be transmitted to the overall control unit 90.

When the operation of step S110 is completed, the main control unit 21 returns to the operation from step S101.

For example, during short-range wireless communication between the notification unit 50 and communication terminal SM in step S109, the communication terminal SM may also transmit its own ID (smartphone ID) to the notification unit 50. In this case, by transmitting the smartphone ID information from the communication terminal SM from the notification unit 50 to the image processing terminal 20 and then to the general control unit 90 in step S110, it becomes possible for the station to identify the owner (pedestrian) of the communication terminal SM that received the notification from the notification unit 50 in step S109, for example.

As described above, the platform monitoring system 500 according to this embodiment comprises an imaging unit 10 that acquires image data GD1 for a predetermined area DD on the platform PF; an image processing unit GP that extracts the position of the pedestrian PD from the image data GD1 acquired by the imaging unit 10; a determination unit JD that determines whether the pedestrian PD is in a dangerous position based on the extraction results of the image processing unit GP; and a notification unit 50 that communicates with a communication terminal SM carried by the pedestrian within the predetermined area and issues a warning corresponding to the determination result of the determination unit JD. This platform monitoring system 500 enables the monitoring side, i.e., the station side, to determine whether the pedestrian PD is in a dangerous position on the platform PF based on image analysis by the image processing unit GP, and the notification unit 50 communicates with the communication terminal SM carried by the pedestrian PD within the predetermined area DD to issue a warning, thereby enabling accurate determination and reliable notification of the determination results.

〔others〕
The present invention is not limited to the above-described embodiment, and can be embodied in various forms without departing from the spirit and scope of the present invention.

First, in the above embodiment, to make it easier to understand the explanation of the notification method, for example, as shown in Figure 1, two sets of monitoring units 100 (monitoring units 100A and 100B) are provided for a four-car train TR, and in each monitoring unit 100, one imaging unit 10 captures an image of a danger area equivalent to the area of two cars, and further, multiple (two) communication devices 50α and 50β that make up the notification unit 50 perform short-range wireless communication within an area equivalent to one car each. However, this is not limited to this configuration, and the number, placement, and short-range wireless communication range of each unit can be changed as appropriate depending on the number of train formations in the train TR and the performance of the cameras CA that make up the imaging unit 10.

Furthermore, various methods can be considered for short-range wireless communication, as long as they can be adjusted to the desired communication range. In addition to the above-mentioned Bluetooth (registered trademark), various other methods can be used.

In the above description, the notification mode on the communication terminal SM is voice (sound) VO, vibration VB, display (light) DS on the display unit SMd, or a combination of these, but it is not limited to these and other modes may also be used. Furthermore, the communication terminal SM is not limited to a smartphone, and various portable devices with equivalent functions can also be used.

While the above description describes a configuration in which each monitoring unit 100 can handle everything from human detection to warning alerts, it is also possible to configure the overall control unit 90 to handle various monitoring processes. That is, the image processing terminals 20 previously installed in each monitoring unit 100 could be consolidated into the overall control unit 90, with each relay connection box BR only being equipped with the function of communicating various data. It is also possible for the overall control unit 90 to perform some of the functions of the image processing terminals 20. For example, the management-side judgment control unit 92 of the overall control unit 90 could function as the judgment unit JD of each monitoring unit 100. That is, the management-side judgment control unit 92 acting as the judgment unit JD could output individual judgment results to multiple (four) communication devices 50α, 50β based on the extraction results of multiple (two) image processing units (image processing circuits) installed in each monitoring unit 100. In this case, the management-side judgment control unit 92 operates as the judgment unit JD in conjunction with operational processing based on the judgment results of the train detection unit DT.

In addition, in the above description, in each monitoring unit 100, one camera CA is used to capture an image of one area as the imaging unit 10, but this is not limited to this, and the imaging unit 10 may be configured with multiple (two or more) cameras CA in each monitoring unit 100.

10...imaging unit, 20...image processing terminal, 21...main control unit, 22...storage unit, 30...monitor, 40...speaker, 50...notification unit, 50α...first communication device, 50β...second communication device, 90...general control unit, 91...hub, 92...management side judgment control unit, 93...general control panel, 100, 100A, 100B...monitoring unit, 500...home monitoring system, A1...arrow, AP...amplifier, BR...relay connection box, CA...camera, CR...vehicle, DA1...area extraction data, DA2...person extraction data, DA3...alert data, DD...area (danger area), DD1 to DD4...part Area, DS...display (light), DT...train detection unit, GD1...image data, GP...image processing unit (image processing circuit), JD...judgment unit (judgment circuit), PD...pedestrian (user), PE1...first pedestrian extraction unit, PE2...second pedestrian extraction unit, PF...platform, PS1...position (pedestrian position), SD...sound source device, SM...communication terminal, SMc...main control unit, SMd...display unit, SMm...memory unit, SMp...touch panel, SMs...speaker, SMt...near-field wireless communication unit, SMv...vibrator, TR...train, VB...vibration, VO...voice (sound), VOs...voice

Claims (7)

an imaging unit that acquires image data for a predetermined area of the platform;
an image processing unit that extracts the position of a pedestrian from the image data acquired by the imaging unit;
a determination unit that determines whether a pedestrian is in a dangerous position based on the extraction result of the image processing unit;
a notification unit that performs short-distance wireless communication within the predetermined range with a carried object of the pedestrian that is already capable of communication, and that issues a warning notification corresponding to the determination result of the determination unit ,
The notification unit has a plurality of communication devices installed so as to include each of the partial areas within a range capable of short-range communication, corresponding to a plurality of partial areas obtained by dividing the area imaged by the imaging unit along the direction of train travel on the platform, and issues warning notifications independently for each partial area. This is a platform monitoring system. 2. The platform monitoring system according to claim 1 , wherein the plurality of communication devices are installed corresponding to stopping areas of the respective cars constituting the train. the imaging unit includes a plurality of cameras arranged on the platform along a direction of travel of the train so as to correspond to the plurality of partial areas ,
the image processing unit has a plurality of image processing circuits corresponding to the plurality of cameras,
The home monitoring system according to claim 1 or 2 , wherein the determination unit outputs determination results to the plurality of communication devices individually based on the extraction results of the plurality of image processing circuits. the imaging unit includes a plurality of cameras arranged on the platform along a direction of travel of the train so as to correspond to the plurality of partial areas ,
the image processing unit has a plurality of image processing circuits corresponding to the plurality of cameras,
the determining unit has a plurality of determining circuits corresponding to the plurality of image processing circuits,
3. The home monitoring system according to claim 1 , wherein the plurality of determination circuits output determination results to the corresponding plurality of communication devices, respectively. The home monitoring system according to any one of claims 1 to 4 , wherein the portable object issues a notification in response to the notification from the notification unit by changing at least one of sound, vibration, and light. a speaker that broadcasts a warning message according to the determination result of the determination unit;
The home monitoring system according to claim 1 , wherein the notification unit issues a warning to the portable object and the speaker broadcasts a warning in parallel. The platform monitoring system according to any one of claims 1 to 6 , further comprising an overall control unit that receives the determination result output from the determination unit and controls the entire device.