Anomaly notification device and anomaly notification method

Abstract

This invention provides an abnormality notification device that can respond quickly to abnormalities that occur to users while they are in transit on a mobile device. [Solution] The system includes a radar unit 10 installed on a mobile vehicle, a vital sign measurement unit 20 that measures vital signs of a user in the mobile vehicle from the detection signal of the radar unit 10, an abnormality determination unit 30 that determines the occurrence of an abnormality from the vital signs information from the vital sign measurement unit 20, and an abnormality notification unit 40 that notifies the mobile vehicle of any abnormalities that have occurred.

Description

Technical Field

[0001] The present invention relates to an abnormality notification device and an abnormality notification method.

Background Art

[0002] When an abnormality occurs to a user moving in a moving body such as a train, it is required to promptly notify the abnormality to the crew or station staff. Abnormalities that occur to users moving in a moving body include physical discomfort, vomiting due to drunkenness, molestation, quarrels, violence, etc. When a user in the moving body has physical discomfort, if a person who discovers the person with physical discomfort presses an operation button of an in-vehicle notification device installed near the door, the conductor is notified of the abnormality. In this case, the conductor arranges for an ambulance at the next stop and provides passenger support after the stop. In the case of a one-person train, when a user who discovers an abnormality reports it using the in-vehicle notification device, the driver is notified, and an emergency stop is made at the next station, and passenger support is provided. Also, when a crew member discovers vomit from a drunken person in the moving body, the crew member reports it to the integrated command center. When the integrated command center receives a report of vomiting in the moving body, it arranges for cleaning at an intermediate station. When the crew member receives a report from the integrated command center that the arrangement for cleaning inside the vehicle at the intermediate station has been completed, after the intermediate station stops, the crew member instructs the station staff to clean, and the station staff cleans the vomit. Also, Patent Document 1 discloses a notification processing device that enables notification by an operator who has encountered an incident, disaster, etc.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] As such, the current notification system for dealing with abnormalities in passengers traveling on trains and other moving vehicles requires the person who discovers the abnormality to decide whether or not to report it, and if so, to locate the in-vehicle notification device and input the necessary commands. Therefore, numerous processes must be involved from the discovery of the abnormality to the actual reporting operation. Consequently, there is a problem in that a rapid system that automatically reports abnormalities to passengers has not yet been established.

[0005] Furthermore, in reporting systems where reports are made based on human intervention, reports are not made unless a person discovers an abnormal situation. This makes it difficult to deal with incidents such as groping committed using methods that are difficult to detect. In addition, in cases of groping, if the content of the phone call during the report becomes public knowledge, it can cause psychological distress to the victim. Therefore, even if someone witnesses groping, they may hesitate to report it. Furthermore, in the event of violence, even if other passengers witness the violence, they may remain silent to avoid becoming involved, and in such cases, the incident may not be reported. Also, in the event of a terrorist attack, many passengers may become victims themselves, leaving very few people in a position to report the incident. Furthermore, vandalism such as graffiti may occur in empty vehicles, which could delay the discovery of the vandalism itself, and therefore the reporting of the incident. In addition, if someone engages in vandalism such as hanging from the handrails, climbing on the overhead racks, or kicking doors and windows, passengers of the vehicle may hesitate to report the incident, even if they witness such behavior, for fear of getting involved in further trouble.

[0006] As mentioned above, users of mobile vehicles are likely to cause many abnormal situations, including harmful and harmful anomalies. On the other hand, the current reporting system requires numerous steps from the discovery of an anomaly to the completion of the report, and there is uncertainty at each stage as to whether the process will proceed smoothly to the point of reporting. Furthermore, even if an anomaly is discovered, the decision of whether or not to report it is influenced by psychological factors such as ignoring it or being forced to ignore it, making it difficult to respond quickly and accurately.

[0007] Furthermore, Patent Document 1 describes a device that transmits appropriate information to the appropriate recipient using the reporting method selected by the whistleblower. However, with Patent Document 1, the whistleblower must perform the reporting operation themselves when an abnormality occurs, which may delay the detection of the abnormality. Moreover, even if an abnormality is detected, it is not guaranteed to be reported, making it difficult to respond quickly and accurately.

[0008] In view of the above-mentioned problems, the present invention aims to provide an abnormality notification device and an abnormality notification method that can quickly and accurately notify a user of an abnormality that occurs while they are moving in a mobile device, without requiring any human intervention. [Means for solving the problem]

[0009] An abnormality notification device according to one aspect of the present invention comprises a radar unit installed on a mobile body, a vital sign measurement unit that measures vital information of a user in the mobile body from the detection signal of the radar unit, an abnormality determination unit that determines whether or not an abnormality has occurred in the mobile body based on the vital information measured by the vital sign measurement unit, and an abnormality notification unit that notifies the abnormality that has occurred in the mobile body.

[0010] An abnormality notification method according to one aspect of the present invention involves installing a radar unit on a mobile body, measuring the vital information of a user in the mobile body from the detection signal of the radar unit, determining the occurrence of an abnormality from the vital information, and, if an abnormality is found, notifying the abnormality that occurred in the mobile body. [Effects of the Invention]

[0011] According to this invention, an abnormality occurring to a user while they are in motion is detected and reported. This eliminates the need for manual reporting and allows for quick and accurate reporting. Furthermore, it enables a rapid response to abnormal situations occurring on the mobile device. [Brief explanation of the drawing]

[0012] [Figure 1] This is a block diagram outlining the notification system according to the first embodiment of the present invention. [Figure 2] These are a plan view and an elevation view showing an example of a radar arrangement pattern in a notification system according to the first embodiment of the present invention. [Figure 3] This is an explanatory diagram of the processing in the abnormality detection device in the notification system according to the first embodiment of the present invention. [Figure 4] This is an explanatory diagram of the processing in the abnormality detection device in the notification system according to the first embodiment of the present invention. [Figure 5] These are a plan view and an elevation view showing the radar arrangement pattern in a second embodiment of the present invention. [Figure 6] These are a plan view and an elevation view showing the radar arrangement pattern in a third embodiment of the present invention. [Figure 7] These are a plan view and an elevation view showing the radar arrangement pattern in the fourth embodiment of the present invention. [Modes for carrying out the invention]

[0013] Embodiments of the present invention will be described below with reference to the drawings. <First Embodiment> Figure 1 is a block diagram illustrating the overview of an abnormality notification system 1 according to a first embodiment of the present invention. The abnormality notification system 1 according to this embodiment detects and reports abnormalities occurring within a mobile body 60. In this example, the mobile body 60 is a train, but the mobile body 60 is not limited to a train.

[0014] As shown in Figure 1, the abnormality notification system 1 according to an embodiment of the present invention consists of a radar unit 10, a vital sign measurement unit 20, an abnormality determination unit 30, and an abnormality notification unit 40.

[0015] The radar unit 10 detects the displacement of the user 50's chest in order to acquire vital information of the user 50 inside the mobile body 60. The radar unit 10 consists of the following basic elements: a transmitting antenna 101a, a receiving antenna 101b, a synthesizer 102, a mixer 103, an A / D converter (ADC: Analogue Digital Converter) 104, a signal processing unit 105, and a transmitting / receiving unit 106. The transmitting antenna 101a may be a single antenna or an array antenna. Similarly, the receiving antenna 101b may also be a single antenna or an array antenna. The transmitting antenna 101a radiates radio waves towards the object (user 50). The receiving antenna 101b receives the reflected waves from the object (user 50). As the radio waves used as the radiated waves, for example, FMCW (Frequency Modulated Continuous Wave) of millimeter waves (24 GHz band / 60 GHz band) is used. The synthesizer 102 generates a modulated wave and outputs it from the transmitting antenna 101a. The mixer 103 generates an intermediate frequency signal (IF: Intermediate Frequency) from the reflected waves received by the receiving antenna 101b. The A / D converter 104 performs analog-digital conversion on the IF signal generated from the reflected waves. The signal processing unit 105 consists of, for example, a DSP (Digital Signal Processor), performs signal processing such as IFFT (Inverse Fast Fourier Transform) on the digital IF signal, and acquires a complex signal from the amplitude and phase information. The transceiver 106 transmits the acquired complex signal to the vital measurement unit 20. In addition to the complex signal, the transceiver 106 also transmits information regarding the position where the radar unit 10 is installed (hereinafter referred to as radar unit position information). The information regarding the position is, for example, when the moving body is a train, information regarding the vehicle number and the door position of the vehicle. Note that the transmission and reception means in the transceiver 106 may be wireless communication or wired communication, and is not particularly limited.

[0016] Note that a plurality of radar units 10 are provided at predetermined positions within the moving body 60 in order to acquire the vital information of each user 50 within the moving body 60. The arrangement of the radar units 10 will be described later.

[0017] A person's chest is slightly displaced due to breathing and heartbeat. In the vital measurement unit 20, by signal-processing the complex signal acquired from the radar unit 10, the displacement of the chest of the user 50 within the moving body 60 is measured, and vital information (hereinafter referred to as vital measurement information) such as the respiration rate and the heart rate is measured.

[0018] The vital measurement unit 20 is composed of, for example, a transceiver unit 201, a signal processing unit 202, and a transceiver unit 203. The transceiver unit 201 communicates with the radar unit 10 and receives a complex signal from the radar unit 10. The signal processing unit 202 processes the complex signal to obtain vital measurement information. The transceiver unit 203 transmits the vital measurement information, the radar unit position information, and the parking information to the abnormality determination unit 30. Note that in the signal processing unit 202, signals from a plurality of radar units 10 may be received, buffered, and batch-processed.

[0019] The abnormality determination unit 30 determines an abnormality from the measured vital information and transmits it to the abnormality notification unit 40. The abnormality determination unit 30 is composed of a transceiver unit 301, a signal processing unit 302, a storage unit 303, and a transceiver unit 304. The transceiver unit 301 acquires the vital measurement information, the radar unit position information, and the parking information from the vital measurement unit 20. The signal processing unit 302 determines an abnormality regarding the user 50 in the moving body 60 based on the vital measurement information and the radar unit position information received from the vital measurement unit 20 and the past information from the vital measurement unit 20 stored in the storage unit 303. The transceiver unit 304 transmits the determination result information and the radar unit position information to the abnormality notification unit 40. Here, the abnormality includes, for example, at least one of the user 50's poor physical condition, vomiting, molestation victimization, violence victimization, terrorism victimization, and mischief victimization, and it may be victimization or perpetration regarding these abnormalities. Here, the determination result information is information indicating that the abnormality determined by the abnormality determination unit 30 or that it is normal (no abnormalities are detected). Also, the storage unit 303 may store the vital measurement information and the radar unit position information acquired from a plurality of radar units 10.

[0020] The abnormality notification unit 40 receives a signal transmitted from the abnormality determination unit 30 and notifies the crew member 70 of the received content. The abnormality notification unit 40 is composed of, for example, a transmitting / receiving unit 401 and a notification unit 402. The transmitting / receiving unit 401 receives the determination result from the abnormality determination unit 30. The notification unit 402 notifies the received content. The notification unit 402 may be a display, a speaker, or anything else. If the notification unit 402 is a display, the notification unit 402 notifies the abnormality in text or diagrams. If the notification unit 402 is a speaker, the notification unit 402 outputs a warning by voice using automated voice or the like. When the crew member 70 receives an abnormality notification from the abnormality notification unit 40, they take subsequent action based on the notification they received. Specifically, the crew member 70 notifies the management center and takes action according to the abnormality. Alternatively, the abnormality notification unit 40 may be directly located in the management center, in which case the crew member 70 may be the person in charge at the management center.

[0021] Figure 2 is a plan view and an elevation view showing the radar arrangement pattern in the first embodiment of the present invention. Figure 2 shows a plan view of the mobile body 60 as seen from above (Figure 2 left) and a cross-sectional view showing the cross-section of the mobile body 60 at the position indicated by AB in the plan view (Figure 2 right).

[0022] The radar unit R is a unit that constitutes the radar section 10, and it emits beam B and receives the reflected waves. Multiple radar units R are arranged at intervals from each other along the direction of travel (longitudinal direction) of the moving body 60, for example, on the ceiling of a train. Here, the radar units are arranged as a first row along the left side and a second row along the right side, with the direction of travel as the reference. The train has multiple doors 63 spaced apart on its sides, which allow passengers to board or alight. In the areas of the train's sides not occupied by the doors 63, multiple seats 62 are arranged in rows. Hand straps are attached above the seats 62. When passenger 50 boards the mobile vehicle 60, it is assumed that they will assume one of the following postures: sitting in a seat 62, holding onto a strap, standing near a seat 62, or standing near a door 63. Since the radar unit R is installed above the ceiling of the train, it directs the beam B it emits towards, for example, the position of the chest of a passenger 50 when seated in a seat 62, or the direction of the chest when standing near a door 63 or standing while shaking hands with a handrail. Furthermore, the number of radar units R may be set to correspond to the number of passengers 50 on the train. If the number of passengers 50 is greater than the number of radar units R, one radar unit R may measure multiple passengers 50 sequentially using time-division multiplexing.

[0023] Figures 3 and 4 are explanatory diagrams of the processing in the abnormality detection unit 30. As shown in Figure 3, multiple radar units Ra, Rb, ..., Ri, ... are installed on the ceiling 61 of the mobile body 60, and the beam B of radar unit Ra is directed towards the chest of user 50a, the beam B of radar unit Rb is directed towards the chest of user 50b, ..., and the beam B of radar unit Ri is directed towards the chest of user 50i, ... Furthermore, each radar unit Ra, Rb, ..., Ri, ... is installed adjacent to another. For example, radar unit Ra and radar unit Rb, and radar unit Rb and radar unit Rc are installed adjacent to each other (the same applies to each radar unit from radar unit Rc onward). Radar unit Ri is any radar unit set on the mobile body 60.

[0024] The abnormality determination unit 30 determines whether or not an abnormality has occurred within the mobile body 60 by performing an abnormality determination process, for example, as shown in Figure 4, based on the vital measurement information of each user 50a, 50b, ..., 50i, ... measured by the radar unit 10, which includes radar units Ra, Rb, ..., Ri, ... and the vital measurement unit 20.

[0025] In this embodiment, the abnormality determination unit 30 determines the presence or absence of an abnormality by using the heart rate measured by the users 50a, 50b, …, 50i, … at a certain time before (for example, the first time) and the heart rate at the current time during the ride (for example, the second time, which is a time after the first time). When an abnormality occurs in the moving body 60, the heart rate of a person a certain time before (before the occurrence of the abnormality (for example, the first time)) is different from the heart rate of the person during the ride (when a certain amount of time has elapsed since boarding: the time after the occurrence of the abnormality (for example, the second time)). Specifically, in this embodiment, the time after a certain period of time has elapsed since the user 50 boarded the moving body 60 stopped at the station is set to k = 0, and the heart rate of the user 50 at a certain time k is denoted as X(k). The reason for setting the time after a certain period of time has elapsed since the user 50 boarded to k = 0 is to consider the time until the boarding position of the user 50 is determined and the time for performing vital measurement at the initial stage of the user 50's boarding. Therefore, at time k = 0, the heart rate X(0) at the initial stage of the user 50's boarding is obtained. Thereafter, the heart rate is measured at intervals of Ts for a certain period of time from time k = 0, and the heart rate at the time when a time of n×Ts has elapsed from k = 0 is obtained as the heart rate X(n×Ts) of the user 50 during the ride (n is a non-negative integer value). Also, at time k = n×Ts, the heart rate X(m×Ts) of the user 50 at a certain time before (the first time) k = m×Ts (m is a non-negative integer value and m < n) is held, and at time k = n×Ts, the abnormality determination shown in FIG. 4 is performed using the heart rates X(n×Ts) and X(m×Ts).

[0026] Xa(m×Ts): Heart rate at the first time measured by the radar unit Ra Xa(n×Ts): Heart rate at the second time measured by the radar unit Ra Xb(m×Ts): Heart rate at the first time measured by the radar unit Rb Xb(n×Ts): Heart rate at the second time measured by the radar unit Rb Xi(m×Ts): Heart rate at the first time measured by the radar unit Ri Xi(n×Ts): Heart rate at the second time measured by the radar unit Ri Xth1: Threshold for very high heart rates (first threshold) Xth2: Threshold for high heart rate (second threshold) Xth3: Threshold for slightly elevated heart rate (third threshold)

[0027] The radar units Ra, Rb, ..., Ri, ... measure the heart rates of users 50a, 50b, ..., 50i, ... within the mobile body 60, and the processing is performed in parallel. Steps S11 to S32 in Figure 4 are processes performed based on the measurement values ​​from one radar unit, for example, Ra.

[0028] In Figure 4, the abnormality detection unit 30 acquires the measured heart rate Xa(m×Ts) of the radar unit Ra at the first time step and the heart rate Xa(n×Ts) at the second time step (step S1).

[0029] The abnormality detection unit 30 determines whether the heart rate Xa(m×Ts) at the first time point and the heart rate Xa(n×Ts) at the second time point are both very high (Xa(m×Ts)≧Xth1, Xa(n×Ts)≧Xth1) (step S11). If the abnormality detection unit 30 determines that the heart rate Xa(m×Ts) at the first time point and the heart rate Xa(n×Ts) at the second time point are both above the first threshold and are both very high (step S11:YES), it determines that there is a suspicion of heart disease (step S12). On the other hand, in step S11, the abnormality determination unit 30 determines that there is no suspicion of heart disease (normal) if at least one of the heart rate Xa(m×Ts) at the first time point and the heart rate Xa(n×Ts) at the second time point is below the first threshold (step S11: NO). (step S70)

[0030] The abnormality determination unit 30 determines whether the heart rate Xa(m×Ts) at the first time is greater than or equal to the first threshold, indicating that it is very high (Xa(m×Ts)≧Xth1), and whether the heart rate Xa(n×Ts) at the second time is lower than the third threshold (Xa(n×Ts)<Xth3) (step S21). When the heart rate Xa(m×Ts) at the first time is greater than or equal to the first threshold but the heart rate Xa(n×Ts) at the second time is lower than the third threshold, the abnormality determination unit 30 determines that it is a dash boarding (step S22). This is because in the case of dash boarding, a high heart rate occurs at the first time, but it is considered that the heart rate returns to normal as time passes. On the other hand, in step S22, when the heart rate Xa(m×Ts) at the first time is less than the first threshold or the heart rate Xa(n×Ts) at the second time is greater than or equal to the third threshold, the abnormality determination unit 30 determines that it does not correspond to dash boarding (normal) (step S70).

[0031] The abnormality determination unit 30 determines whether the heart rate Xa(n×Ts) at the second time is higher than the heart rate Xa(m×Ts) at the first time (Xa(m×Ts)<Xa(n×Ts)), and whether the heart rate Xa(n×Ts) during the ride is greater than or equal to the third threshold, indicating that it is slightly high (Xa(n×Ts)≧Xth3) (step S31). When the heart rate Xa(n×Ts) at the second time is higher than the heart rate Xa(m×Ts) at the first time, and the heart rate Xa(n×Ts) during the ride is greater than or equal to the third threshold, indicating that it is slightly high, the abnormality determination unit 30 determines that there is a suspicion of sudden physical discomfort or a suspicion of molestation (step S32). This is because in the case of physical discomfort, the heart rate becomes slightly high. Also, in the case of molestation, the heart rate increases due to tension. On the other hand, when the heart rate Xa(n×Ts) at the second time is not higher than the heart rate Xa(m×Ts) at the first time, or the heart rate Xa(n×Ts) during the ride is less than the third threshold (step S31:NO), the abnormality determination unit 30 determines that there is no suspicion of sudden physical discomfort or molestation (normal) (step S70).

[0032] Next, steps S41 to S42 are processes performed based on measurements taken at two adjacent radar units, for example, radar unit Ra and radar unit Rb.

[0033] The abnormality detection unit 30 acquires the measured heart rate Xa(m×Ts) of radar unit Ra at the first time step and the measured heart rate Xa(n×Ts) of radar unit Ra at the second time step (step S1). The abnormality detection unit 30 also acquires the measured heart rate Xb(m×Ts) of radar unit Rb adjacent to radar unit Ra at the first time step and the measured heart rate Xb(n×Ts) of radar unit Rb at the second time step (step S2). Here, radar unit Ra measures the heart rate of user 50a, and radar unit Rb measures the heart rate of user 50b.

[0034] The abnormality determination unit 30 determines whether the heart rates Xa(m×Ts) and Xb(m×Ts) of the two people (user 50a and user 50b) at the first time step of the two radar units Ra and Rb are less than or equal to the third threshold (Xa(m×Ts)≦Xth3, Xb(m×Ts)≦Xth3), and whether the heart rates Xa(n×Ts) and Xb(n×Ts) of the two people at the second time step exceed the second threshold (Xa(n×Ts)>Xth2, Xb(n×Ts)>Xth2) (step S41). The abnormality detection unit 30 determines that there is a suspicion of trouble occurring between the users (user 50a, user 50b) if the heart rates Xa(m×Ts) and Xb(m×Ts) of the two people at the first time step are both below the third threshold, and the heart rates Xa(n×Ts) and Xb(n×Ts) of the two people at the second time step are both above the second threshold (step S41: YES). This is because if there is a dispute or argument between users, the heart rates of both people will rise due to anger and tension. On the other hand, the abnormality detection unit 30 determines that there is no suspicion of trouble between users (normal) if at least one of the two people's heart rates Xa(m×Ts) and Xb(m×Ts) at the first time point exceeds the third threshold, or if at least one of the two people's heart rates Xa(n×Ts) and Xb(n×Ts) at the second time point is below the second threshold (step S41: NO). (step S70)

[0035] Next, steps S51 to S62 are processes performed based on measurements from other radar units Ri.

[0036] The abnormality detection unit 30 acquires the measured values ​​of the heart rate Xi(m×Ts) of radar unit Ri at the first time point and the heart rate Xi(n×Ts) of radar unit Ri at the second time point (step S3). Here, radar unit Ri is a group of radar units formed by combining any number of radar units in any combination.

[0037] The abnormality determination unit 30 determines whether, in a vehicle with no people around, the heart rate Xi(m×Ts) at the first time and the heart rate Xi(n×Ts) at the second time of the radar unit Ri are both above the third threshold and indicate that they are slightly elevated (Xi(m×Ts)≧Xth3, Xi(n×Ts)≧Xth3) or not (step S51). If the abnormality determination unit 30 determines that the heart rate Xi(m×Ts) at the first time and the heart rate Xi(n×Ts) at the second time of the radar unit Ri are both above the third threshold and indicate that they are slightly elevated (step S51:YES), it determines that there is suspicion of vandalism (step S52). On the other hand, the abnormality detection unit 30 determines that there is no suspicion of mischief (normal) if at least one of the heart rate Xi(m×Ts) of the radar unit Ri at the first time point and the heart rate Xi(n×Ts) at the second time point is below the third threshold (step S51: NO) (step S70).

[0038] The abnormality detection unit 30 determines whether the heart rate Xi(m×Ts) at the first time and the heart rate Xi(n×Ts) at the second time of the wide-area radar unit Ri are above the second threshold and therefore high (Xi(m×Ts)≧Xth2, Xi(n×Ts)≧Xth2) at the same time and in the same vehicle (step S61). If the heart rate Xi(m×Ts) at the first time and the heart rate Xi(n×Ts) at the second time of the wide-area radar unit Ri are both above the second threshold and therefore high (step S61:YES), the abnormality detection unit 30 determines that there is a suspicion of terrorist attack (step S62). This is because, in the event of a terrorist attack, it is thought that the heart rate of users will increase over a wide area due to the occurrence of sudden changes in the physical condition of people due to widespread poison dispersal, etc., and due to the fear of being in a terrorist situation. On the other hand, the abnormality detection unit 30 determines that there is no suspicion of terrorist damage (normal) if at least one of the heart rate Xi(m×Ts) at the first time point and the heart rate Xi(n×Ts) at the second time point of the wide-area radar unit Ri is below the second threshold (step S61: NO) (step S70).

[0039] The abnormality detection process described above may be performed continuously at regular intervals, or it may be performed in response to a request from the crew member 70. For example, power consumption can be reduced by stopping the emission of radio waves from the radar unit 10 during normal operation and by keeping the signal processing unit 302 related to the calculation of vital measurement information of the vital measurement unit 20 in an idle state. As shown in Figure 1, the crew member 70 can send a request signal from the abnormality notification unit 40 to the vital measurement unit 20 when they determine that an abnormality is likely to occur, taking into account the time, the number of passengers, and the operating conditions. At this time, they can also specify a location within the train, such as "which car and which seat" or "which car and which door." In this case, the abnormality notification unit 40 may pre-store installation data that associates the train's car number, the door number assigned to each train door, and the identification information assigned to the radar unit R. By referring to this installation data, the unit 40 may extract the radar unit R corresponding to the location within the train specified by the crew member 70, and send a request signal while specifying the extracted radar unit R. Upon receiving this request signal, the vital sign measurement unit 20 transmits the request signal to the radar unit 10 corresponding to the designated radar unit R, and activates the radar unit 10. The abnormality detection unit 30 determines an abnormality from the vital information and location information sent from the vital sign measurement unit 20 using the abnormality detection process described above, and transmits the determination result and location information to the abnormality notification unit 40. As a result, the crew member 70 can find out whether an abnormality has occurred and, if so, the nature of the abnormality.

[0040] Furthermore, for example, if there are train delays, many passengers may become unwell. In such cases, crew member 70 may proactively request abnormality detection processing.

[0041] Furthermore, the system may request abnormality detection processing not only based on requests from the crew 70, but also based on various types of information. For example, the abnormality notification unit 40 may acquire information on train delay times, temperature and humidity inside the train, congestion information, etc., and if it determines that there is a high probability of an abnormality occurring based on at least one of these pieces of information, it may automatically request abnormality detection processing from the vital measurement unit 20.

[0042] Furthermore, in this embodiment, the information of the judgment result is sent to the abnormality notification unit 40 so that the crew member 70 can confirm it. However, the information of the judgment result may also be sent to a relevant location, such as a nearby station or hospital. In this way, if, for example, a sick person occurs inside the moving vehicle (within the area where passengers can ride the vehicle), information such as "an abnormality occurred in which car and which seat" can be shared with nearby stations and hospitals, enabling a quick response to the sick person.

[0043] As described above, in this embodiment, the radar unit 10 is installed inside the mobile vehicle. The vital measurement unit 20 acquires the user's vital information using the complex signal obtained from the radar unit 10. The abnormality detection unit 30 then determines if there is an abnormality in the user based on the vital information and location information. When an abnormality in the user is determined, the abnormality detection unit 30 notifies the abnormality notification unit 40 that an abnormality has been detected. This allows the crew 70 to be quickly notified of an abnormality without human intervention.

[0044] <Other Embodiments> As shown in Figure 2, in the first embodiment of the present invention, multiple radar units R are installed corresponding to each user 50 within the mobile body 60. In this case, a large number of radar units 10 corresponding to the number of users 50 are required.

[0045] Figure 5 is a plan view and an elevation view showing the radar arrangement pattern in a second embodiment of the present invention.

[0046] In this example, the radar unit R can be modified by digital signal processing so that the beam direction is directed in any direction using an array antenna. In this example, the radar unit R can control beams in two directions, beam B1 and beam B2. One radar unit R is installed for multiple users 50. In this example, the radar unit R is installed so that two users 50 are positioned in front of one radar unit R. By using such a radar unit R and controlling the two beams B1 and B2 from the radar unit R, vital information of two users 50 can be acquired with one radar unit R. Thus, in this embodiment, the number of radar units 10 can be reduced by using beamforming technology.

[0047] Figure 6 is a plan view and an elevation view showing the radar arrangement pattern in a third embodiment of the present invention.

[0048] In this example, multiple radar units R are installed on the ceiling of the mobile body 60, spaced apart from each other, generally along the centerline in the width direction of the mobile body 60. Each radar unit R is provided with a rotation mechanism set so that its axis of rotation is aligned vertically. This rotation mechanism rotates the radar unit R so that the direction of its beam changes horizontally over time, and vital information is acquired in time division multiplexing for each time slot synchronized with the beam rotation. These time slots are set based on the timing at which vital information can be acquired for positions where users are expected to be seated, positions where users stand while using handrails or straps inside the vehicle, etc., taking into consideration the rotation speed, etc. This allows a single radar unit R to acquire vital information from multiple users in the surrounding area. Thus, in this embodiment, by rotating the radar unit R and processing vital information in time division multiplexing for each time slot, the number of radar units 10 can be further reduced.

[0049] Figure 7 is a plan view and an elevation view showing the radar arrangement pattern in the fourth embodiment of the present invention.

[0050] In this example, the radar unit R used is one that can control the direction of the beam in either beam B1 or beam B2 using an array antenna. The radar unit R is rotatably mounted on approximately the centerline of the ceiling of the mobile body 60. As the beam of the radar unit R rotates, vital information is acquired in time division multiplexing for each time slot synchronized with the beam rotation. In addition, for example, the beam direction is switched each time the radar unit R rotates. Thus, in this embodiment, the number of radar units 10 can be further reduced by using beamforming technology and processing vital information in time division multiplexing while moving the radar unit R.

[0051] The abnormal notification system 1 in the above-described embodiment may be implemented in whole or in part by a computer. In that case, the program for implementing this function may be recorded on a computer-readable recording medium, and the program recorded on this recording medium may be loaded into a computer system and executed. Here, "computer system" includes hardware such as an OS and peripheral devices. Furthermore, "computer-readable recording medium" refers to portable media such as flexible disks, magneto-optical disks, ROMs, CD-ROMs, and storage devices such as hard disks built into a computer system. Moreover, "computer-readable recording medium" may also include those that dynamically hold programs for a short period of time, such as communication lines used when transmitting programs via networks such as the Internet or communication lines such as telephone lines, and those that hold programs for a certain period of time, such as volatile memory inside a computer system that acts as a server or client in such a case. Furthermore, the above-mentioned program may be for implementing a part of the above-mentioned function, or it may be a program that can implement the above-mentioned function in combination with a program already recorded in the computer system, or it may be implemented using a programmable logic device such as an FPGA.

[0052] While embodiments of this invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments and includes designs and the like that do not depart from the spirit of this invention. [Explanation of symbols]

[0053] 10...Radar unit, 20...Vital sign measurement unit, 30...Anomaly detection unit, 40...Anomaly notification unit

Claims

1. A radar unit installed on the mobile unit, A vital sign measurement unit measures the vital information of the user inside the mobile vehicle from the detection signal of the radar unit, An abnormality determination unit determines whether or not an abnormality has occurred within the mobile body based on the vital information measured by the vital measurement unit, An abnormality notification unit that notifies of an abnormality that occurs within the aforementioned mobile vehicle and An abnormality notification device equipped with the following features.

2. The abnormality detection unit obtains the heart rate of each user at a first time and the heart rate at a second time, which is a time later than the first time, and uses the heart rate of each user at the first time and the heart rate at the second time to perform an abnormality detection, as described in claim 1.

3. The abnormality detection unit acquires the heart rate of an adjacent user when they board the vehicle and the heart rate at a time after they have boarded, and uses the heart rate of the adjacent user when they boarded and the heart rate at a time after they have boarded to perform an abnormality detection.

4. The abnormality detection unit acquires the heart rate of multiple users when they board the vehicle and the heart rate at a time after they board, and uses the heart rate of multiple users when they board the vehicle and the heart rate at a time after they board to perform an abnormality detection.

5. The abnormality notification device according to claim 1, wherein the radar unit is installed so that the beam is directed towards the position where each user is riding.

6. The abnormality notification device according to claim 1, wherein the radar unit controls the beam direction so that the beam is directed towards the position where each user is riding.

7. An abnormality notification device according to claim 1, wherein the radar unit is rotated such that the direction of the beam changes horizontally over time, and vital information is processed in a time-division multiplexing manner in time slots synchronized with the rotation of the radar unit.

8. A radar unit is installed on the mobile unit. From the detection signal of the radar unit, vital information of the user inside the mobile vehicle is measured. Based on the vital information, determine whether or not an abnormality has occurred within the moving body. If the aforementioned abnormality occurs, the abnormality that occurred within the mobile vehicle will be reported. An abnormality reporting method designed for this purpose.

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