WO2023032183A1

WO2023032183A1 - Seat monitoring system and seat monitoring method

Info

Publication number: WO2023032183A1
Application number: PCT/JP2021/032585
Authority: WO
Inventors: 哲也伊藤
Original assignee: 株式会社日立国際電気
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2023-03-09
Also published as: JPWO2023032183A1

Abstract

A seat monitoring system according to the present example is provided with: a pressure sensor 12 and a temperature sensor 13 provided at each seat in a passenger cabin; a CPU 18 (or a server 25) that determines the seat status of each seat in the passenger cabin, including whether each seat in the passenger cabin is in an occupied state or an unoccupied state, on the basis of the results of detection by the pressure sensor 12 and the temperature sensor 13; and a monitor 24 that displays a passenger-cabin monitoring screen 50 including a seat map indicating the seat status of each seat in the passenger cabin. This makes it possible to readily recognize the seat status in a passenger cabin in a train without requiring a crew member to visit the passenger cabin.

Description

SEAT MONITORING SYSTEM AND SEAT MONITORING METHOD

The present invention relates to a seat monitoring system that monitors seat conditions in train cars.

Various inventions have been proposed so far to support the smooth operation of railways. For example, in Patent Document 1, a cabin camera that captures the interior of a train cabin and a vacant seat probability for each reserved seat based on images captured by the cabin camera while the train is running are calculated and compared with a vacant seat probability threshold. Disclosed is a train monitoring system comprising a processing server for detecting resale candidate seats by means of a train, and a touch panel monitor for displaying the resale candidate seats detected by the processing server.

WO2021/033304

One of the tasks of train crews is to monitor the seat conditions in the train cabin. As an example, a flight attendant finds a passenger sitting in an unreserved seat and prompts the passenger to purchase a reserved seat or move seats. As another example, flight attendants find seats that are reserved but not occupied by passengers and treat the seats as candidates for resale. However, in order to monitor the state of the seats in the cabin, it is necessary for the crew to actually go to the cabin, which is inconvenient. In addition, as the number of train cars increased, the increase in the burden was remarkable.

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional circumstances as described above, and an object of the present invention is to enable a crew member to easily grasp the seat conditions in a train cabin without going to the cabin. .

In order to achieve the above object, a seat monitoring system, which is one aspect of the present invention, is configured as follows.
That is, in a seat monitoring system for monitoring each seat in a passenger compartment of a train, pressure sensors and temperature sensors provided in each seat in the passenger compartment and each determined based on the detection results of the pressure sensor and temperature sensor and a monitor that displays a seat map indicating the seat status of each seat in the passenger compartment, including the seated status or the seat absent status of the seat.

Here, in the seat monitoring system according to the present invention, the seat map can be configured to include whether or not each seat is reserved.

Further, the seat monitoring system according to the present invention further comprises a processing unit for determining whether each seat is seated or not based on the detection results of the pressure sensor and the temperature sensor. When the detected pressure is equal to or higher than a threshold and the temperature detected by the temperature sensor is equal to or higher than a first reference temperature, the seat is determined to be in a seated state; otherwise, the seat is determined to be in an unoccupied state. can be configured as

Further, in the seat monitoring system according to the present invention, the processing unit further controls the temperature of the seat when the temperature detected by the temperature sensor is equal to or higher than the second reference temperature, which is higher than the first reference temperature. It may be configured to determine that the passenger is hyperthermic and otherwise determine that the passenger in that seat is normothermic.

Further, in the seat monitoring system according to the present invention, the processing unit further determines that the pressure detected by the pressure sensor is equal to or higher than the threshold and the temperature detected by the temperature sensor is lower than the first reference temperature for the seat in the unoccupied state. If so, the seat is determined to be loaded, and if not, the seat is determined to be unloaded.

In addition, in the seat monitoring system according to the present invention, the monitor can be configured to further display the congestion degree of the passenger cabin calculated based on the seated state or the unoccupied state of each seat in the passenger cabin.

A seat monitoring method, which is one aspect of the present invention, is configured as follows.
That is, in a seat monitoring method for monitoring each seat in a passenger cabin of a train, a pressure sensor provided in each seat in the passenger cabin senses the pressure on the seat and detects pressure on each seat in the passenger cabin. A temperature sensor detects the temperature on the seat, and a monitor indicates the seat status of each seat in the passenger compartment, including the occupied or unoccupied status of each seat determined based on the detection results of the pressure sensor and the temperature sensor. It is characterized by displaying a seat map showing the .

According to the present invention, it becomes possible for the crew to easily grasp the seat conditions in the cabin of the train without going to the cabin.

It is a figure showing an example of composition of a seat monitoring system concerning one embodiment of the present invention. FIG. 4 is a diagram showing an example of changes in pressure and temperature when a passenger sits on/leaves the seat; It is a figure which shows the example of a cabin monitoring screen. FIG. 10 is a diagram illustrating an example of a flowchart of seat map generation processing; It is a figure which shows the flowchart example of the determination processing of a seat state. 6 is a diagram showing an example of a seat state determination table corresponding to FIG. 5; FIG.

An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 shows a configuration example of a seat monitoring system according to one embodiment of the present invention. The seat monitoring system of this example includes a seat unit 10, a switching hub 20,

cameras

21 and 22, a recorder 23, a monitor 24, and a server. 25 , a Train Server 26 ,

Transmission Servers

27 and 28 and a Ground Side Monitor 29 .

The seat unit 10, the switching hub 20, the

cameras

21 and 22, the recording device 23, the monitor 24, the server 25, the train server 26, and the transmission server 27 are mounted on the train. The transmission server 28 and the ground monitor 29 are installed in ground-side equipment (for example, a station monitoring room). The transmission server 27 and the transmission server 28 can transmit data to each other by wireless communication.

There are as many seat units 10 as there are seats in the cabin of the train (in FIG. 1, there are a plurality of N seat units 10-1 to 10-N). Each of the seat units 10 has a seat 11 , a pressure sensor 12 , a temperature sensor 13 and a sensor data processor 14 . The pressure sensor 12 and the temperature sensor 13 are built into the seating surface of the seat 11 . The pressure sensor 12 detects pressure applied to the seat surface of the seat 11 . A temperature sensor 13 detects the temperature of the seat surface of the seat 11 .

The sensor data processing unit 14 includes A/D converters (Analog to Digital Converters) 15 and 16, a memory 17, a CPU (Central Processing Unit) 18, and an Ethernet unit 19. The data of the detection results by the pressure sensor 12 and the temperature sensor 13 are converted from analog format to digital format by A/

D converters

15 and 16 respectively, and temporarily stored in memory 17 .

The CPU 18 processes the pressure detected by the pressure sensor 12 into binary data indicating the presence or absence of pressure. Specifically, when the detected pressure is equal to or greater than a predetermined threshold value (that is, when it is determined that there is pressure), the value is set to High (for example, "1"), and when the detected pressure is less than the predetermined threshold value (that is, , when it is determined that there is no pressure), pressure presence/absence data is generated with a Low value (for example, "0"). The CPU 18 also converts the temperature sensed by the temperature sensor 13 into human body temperature according to the characteristics of the temperature sensor 13 to generate body temperature data.

Here, we will explain the changes in seat pressure and temperature when a passenger sits down or leaves the seat. The pressure and temperature of the seat change as shown in the graph of FIG. In FIG. 2, a graph 40 shows changes in the value of the pressure sensor, and a graph 42 shows changes in the temperature of the seat (temperature detected by the temperature sensor). As shown in the figure, immediately after a passenger takes a seat, the temperature of the seat gradually rises toward the passenger's body temperature, and immediately after the passenger leaves the seat, the temperature rises toward the room temperature in the cabin. The temperature gradually drops. On the other hand, the value of the pressure sensor changes from "no pressure" (low value) to "with pressure" (high value) at the same time that the passenger takes the seat, and "with pressure" (high value) at the same time that the passenger leaves the seat. to "no pressure" (Low value). This characteristic does not depend on the passenger's physical size or whether the passenger is an adult or a child. In addition, there are cases where not only people (passengers) sit on the seats, but also luggage is placed on them, so it is not possible to distinguish them only by the value of the pressure sensor, but it is possible to distinguish them by checking the temperature of the object on the seat. is.

Therefore, the CPU 18 considers not only the pressure presence/absence data obtained by the pressure sensor 12 but also the body temperature data obtained by the temperature sensor 13 to determine the seat state, and generates seat state data indicating the result of the determination. Generate. In this way, by using not only pressure data but also body temperature data to determine the seat state, it is possible to accurately determine whether the seat is seated or not, regardless of the passenger's physique or whether the passenger is an adult or a child. can do. In addition, it is possible to accurately determine whether the object on the seat is a person or baggage.

In the seat state determination processing, for example, the seated/seated state of the seat, the body temperature of the passenger in the seated seat, and the presence or absence of luggage on the seat in the unoccupied seat are determined. Specifically, a seat in which the value of the pressure presence/absence data is pressure present (pressure equal to or higher than a predetermined threshold) and the value of the body temperature data is equal to or higher than the first reference temperature is determined to be "seated state", and the other seat is determined to be " away from seat”. Furthermore, for a seat in the "sitting state", if the value of the body temperature data is equal to or higher than the second reference temperature that is higher than the first reference temperature (that is, if the body temperature is determined to be fever), the passenger in that seat is " Otherwise, the passenger in that seat is determined to be in a "normothermic state." Furthermore, regarding the seats in the "separated state", the seats with the pressure presence/absence data value of pressure presence and the body temperature data value of less than the first reference temperature are determined to be "baggage present", and the other seats are determined to be "baggage present". No” is determined.

The seat unit 10 of each seat sends pressure presence/absence data, body temperature data, and seat condition data (data indicating the judgment result of the seat condition) to the in-train network through the Ethernet unit 19 together with data such as detection date and time and seat ID. do.

The camera 21 is a front camera provided in front of the passenger compartment of each vehicle, and captures an in-vehicle image of the rear side viewed from the front of the passenger compartment. The camera 22 is a rear camera provided behind the passenger compartment of each vehicle, and captures an in-vehicle image of the front side viewed from the rear of the passenger compartment.

These seat units 10 and

cameras

21 and 22 provided in the passenger compartment of each vehicle are connected to the switching hub 20 of that vehicle. Also, if other devices are installed in the vehicle, those devices (for example, recording device 23 , monitor 24 , server 25 , etc.) are also connected to switching hub 20 . The switching hubs 20 of each vehicle are connected to each other in cascade to form an in-train network.

The recording device 23 stores video data obtained by the

cameras

21 and 22 . The server 25 operates to display on the monitor 24 a cabin monitoring screen for monitoring the condition of the cabin. The cabin monitoring screen includes real-time video data obtained by the cameras 21 and 22 (or past video data accumulated in the recording device 23), and seat status data received from the seat unit 10 of each seat in the cabin. Includes a seat map based on The recording device 23, the monitor 24, and the server 25 are installed, for example, in a crew cabin in the leading car of a train.

The server 25 can communicate with a train server 26 owned by a host system (for example, a train management system) that manages train operation to acquire train operation information and seat reservation information. The train operation information includes, for example, information such as operating routes, operating hours, and stopping stations. The seat reservation information includes information such as the identification code of the reservation, the seat ID of the reserved seat, and the start station and end station of the reservation. Therefore, the server 25 identifies from which station to which station each seat is reserved based on train operation information and seat reservation information, and detects an illegally occupied seat in which a passenger is seated in an unreserved seat. can do. When the server 25 detects an illegally occupied seat, the server 25 can cause the monitor 24 to display a seat map that visually distinguishes the illegally occupied seat from other seats.

FIG. 3 exemplifies a cabin monitoring screen 50 displayed on the monitor 24 . The cabin monitor screen 50 is a screen that displays the situation of the cabins of one vehicle, and the vehicle to be displayed can be switched by a user operation. The cabin monitoring screen 50 has a first display area 51 , a second display area 52 , a third display area 53 , a fourth display area 54 and a fifty-third display area 55 .

In the first display area 51, the image of the rear camera 22 (that is, the in-vehicle image of the front side viewed from behind the passenger seats) is displayed. In the second display area 52, an image of the front camera 21 (that is, an in-vehicle image of the rear side viewed from the front of the passenger seats) is displayed. The third display area 53 displays a seat map in which a plurality of seat marks 60 indicating seats in the vehicle are arranged according to the actual layout in the vehicle. A fourth display area 54 displays the ratio of the number of empty seats to the number of seats in the vehicle. In the fifth display area 55, information (for example, seat ID) indicating the seat on which the person with abnormal body temperature is seated is displayed.

Here, the seat mark 60 on the seat map in the third display area 53 is displayed in a manner that allows the seat status of the seat to be visually recognized. In the example of FIG. 3, a seat mark 61 indicating that the reserved seat is for a normal body temperature person, a seat mark 62 indicating that the reserved seat is for an abnormal body temperature person, and a seat mark 62 indicating that the reserved seat is for an abnormal body temperature person. A seat mark 63 indicating that the seat is occupied, a seat mark 64 indicating that the reserved seat is unoccupied (that is, an empty seat), and an unreserved seat is unoccupied (that is, A seat mark 65 indicating an empty seat is displayed in different display modes. These display modes can be controlled based on the seat state data and the result of detection of illegally occupied seats. In FIG. 3, the seating/leaving status of each seat, the body temperature of the passengers in the seated seat, and whether or not the seat is reserved can be visually recognized. The presence or absence of baggage on the seat in the seat state) may also be visually recognized.

By providing such a cabin monitoring screen 50, it becomes possible for the crew to easily grasp the seat conditions in the cabin of the train without having to go to the cabin. The server 25 receives seat state data from the seat unit 10 of each seat in the cabin, real-time video data received from the cameras 21 and 22 (or past video data accumulated in the recording device 23), It is also possible to transmit the detection data of illegally occupied seats to the ground monitor 29 through the

transmission servers

27 and 28 and display the data on the ground monitor 29 .

Here, in the above description, the seat unit 10 of each seat determines the seat state of its own seat. , the seat state of each seat may be determined. In the following, seat map generation processing will be described, taking as an example the case where the server 25 determines the seat state of each seat.

FIG. 4 shows an example of a flow chart of seat map generation processing.
The server 25 first sets the variable n to "1" as an initial value (step S11). The server 25 next sets the value of the variable n to the "seat No." indicating the seat unit whose seat state is to be determined (step S12). The server 25 then determines whether or not the current "seat No." is equal to or greater than the maximum number of seats in the cabin (step S13). If it is determined in step S13 that the "seat No." After adding "1" to the variable n (step S15), the process returns to step S12. On the other hand, if it is determined in step S13 that the "seat No." is greater than or equal to the maximum value, the process ends. In other words, the server 25 sequentially executes seat state determination processing for all seat units in the cabin of the train.

FIG. 5 shows an example of a flowchart of the seat state determination process (step S14).
The server 25 performs the following processes based on the pressure presence/absence data and body temperature data of the seat unit 10-n to be processed and the seat reservation information. The server 25 refers to the pressure presence/absence data and determines whether or not there is pressure (step S21). If it is determined that there is pressure in step S21, the server 25 refers to the body temperature data and determines whether or not the body temperature is normal (above the first reference temperature and less than the second reference temperature) (step S22). .

When it is determined that the body temperature is normal in step S22, the server 25 refers to the seat reservation information and determines whether or not there is a reservation (step S23). If it is determined that there is a reservation in step S23, the server 25 sets "reservation for normal temperature person occupied" as the seat state (step S28). If it is not determined that there is a reservation in step S23, the server 25 sets "non-reserved normal body temperature person occupied" as the seat state (step S29).

If the body temperature is not determined to be normal in step S22, the server 25 refers to the body temperature data to determine whether the body temperature is in a fever state (above the second reference temperature) (step S24). If it is determined in step S24 that the body temperature is in a fevered state, the server 25 refers to the seat reservation information and determines whether or not there is a reservation (step S25). When it is determined that there is a reservation in step S25, the server 25 sets "occupied by a person with abnormal body temperature with reservation" as the seat state (step S30). If it is determined that there is no reservation in step S25, the server 25 sets the seat state to "non-abnormal body temperature person occupied" (step S31).

If the body temperature is not determined to be in a fevered state in step S24, the server 25 refers to the seat reservation information and determines whether or not there is a reservation (step S26). When it is determined that there is a reservation in step S26, the server 25 sets "reserved baggage left" as the seat state (step S32). If it is determined that there is no reservation in step S26, the server 25 sets the seat state to "left without reservation without baggage" (step S33).

If it is not determined that there is pressure in step S21, the server 25 refers to the seat reservation information and determines whether or not there is a reservation (step S27). When it is determined that there is a reservation in step S27, the server 25 sets "reserved and vacant seat" as the seat status (step S34). If it is determined that there is no reservation in step S27, the server 25 sets the seat status to "unreserved vacant seat" (step S35).

　Fig. 6 shows an example of a seat condition determination table corresponding to the flowchart of Fig. 5. By performing the seat determination process according to the flowchart of FIG. 5, it is possible to obtain determination results such as the seat state determination table of FIG. Note that the flowchart of FIG. 5 and the seat state determination table of FIG. 6 are merely examples, and do not limit the processing procedures and determination contents.

As described above, the seat monitoring system of the present example is configured to monitor each seat in the cabin based on the detection results of the pressure sensor 12 and the temperature sensor 13 provided in each seat in the cabin and the detection results of the pressure sensor 12 and the temperature sensor 13. A CPU 18 (or a server 25) that determines the seat state of each seat, including the seated state or the seated state of each seat, and a monitor 24 that displays a cabin monitoring screen 50 including a seat map showing the seat state of each seat in the cabin. It has Therefore, the train crew can confirm the seat condition in the passenger compartment of the train only by looking at the cabin monitoring screen 50 displayed on the monitor 24 . As a result, the crew can easily grasp the state of the seats in the cabin of the train without going to the cabin.

If a seat without a reservation is detected, or if a passenger with abnormal body temperature (fever) is detected, the crew will be notified to that effect via a speaker, etc. , it may prompt an appropriate countermeasure. In addition, detection information may be transmitted to ground-side equipment in order to notify ground-side personnel of the above detection.

Although the present invention has been described above based on one embodiment, it goes without saying that the present invention is not limited to the configuration described here, and can be widely applied to systems with other configurations.
In addition, the present invention provides, for example, a method including technical procedures related to the above processing, a program for causing a processor to execute the above processing, and a storage medium storing such a program in a computer-readable manner. is also possible.

It should be noted that the scope of the present invention is not limited to the illustrated and described exemplary embodiments, but includes all embodiments that achieve effects equivalent to those intended by the present invention. Moreover, the scope of the invention may be defined by any desired combination of the specific features of each and every disclosed feature.

The present invention can be used in a seat monitoring system that monitors the state of seats in train cars.

10-1 to 10-N: seat unit, 11: seat, 12: pressure sensor, 13: temperature sensor, 14: sensor data processing unit, 15, 16: A/D converter, 17: memory, 18: CPU, 19: Ethernet unit 20: Switching hub 21: Front camera 22: Rear camera 23: Recording device 24: Monitor 25: Server 26: Train server 27, 28: Transmission server 29: Ground monitor

Claims

In a seat monitoring system for monitoring each seat in a train cabin,
a pressure sensor and a temperature sensor provided for each seat in the cabin;
a monitor that displays a seat map indicating the seat state of each seat in the passenger cabin, including the seated state or the unseat state of each seat determined based on the detection results of the pressure sensor and the temperature sensor. A seat monitoring system characterized by:
The seat monitoring system of claim 1, wherein
The seat monitoring system, wherein the seat map includes whether or not each seat is reserved.
In the seat monitoring system according to claim 1 or claim 2,
Further comprising a processing unit that performs determination processing of a seated state or a seated state of each seat based on the detection results of the pressure sensor and the temperature sensor,
The processing unit determines that the seat is in a seated state when the pressure detected by the pressure sensor is equal to or higher than a threshold and the temperature detected by the temperature sensor is equal to or higher than a first reference temperature. , a seat monitoring system characterized by determining that the seat is in an unoccupied state.
A seat monitoring system according to claim 3, wherein
The processing unit further determines that a passenger sitting in a seat has an abnormal body temperature if the temperature detected by the temperature sensor is equal to or higher than a second reference temperature that is higher than the first reference temperature. and, if not, determining that the occupant of that seat is normothermic.
In the seat monitoring system according to claim 3 or claim 4,
Further, the processing unit further determines that when the pressure detected by the pressure sensor is equal to or higher than the threshold value and the temperature detected by the temperature sensor is lower than the first reference temperature for an unoccupied seat, the seat is 1. A seat monitoring system, wherein it is determined that there is luggage, and if not, it is determined that the seat is without luggage.
In the seat monitoring system according to any one of claims 1 to 5,
The seat monitoring system, wherein the monitor further displays the degree of congestion of the passenger cabin calculated based on the seated state or the unoccupied state of each seat in the passenger cabin.
A seat monitoring method for monitoring each seat in a train cabin, comprising:
A pressure sensor provided on each seat in the passenger compartment detects the pressure on the seat,
A temperature sensor provided in each seat in the passenger compartment detects the temperature on the seat,
The monitor displays a seat map indicating the seat state of each seat in the passenger compartment, including the seated state or the unoccupied state of each seat determined based on the detection results of the pressure sensor and the temperature sensor. and seat monitoring method.