JP7233983B2 - Operating state monitoring device and operating state monitoring method - Google Patents

Description

The present invention relates to an operating state monitoring device and an operating state monitoring method.

For example, the acceleration generated in the vehicle body may increase due to a bogie failure or an abnormality in the track of a track-based transportation vehicle such as a train. This abnormality can be detected by installing an acceleration sensor on the vehicle body and monitoring the acceleration value. However, in order to detect these abnormalities, it is necessary to install an acceleration sensor for each vehicle or truck. If there are a large number of vehicles, it takes time and effort to install the sensors, and the cost of installing the sensors increases.

Patent document 1 discloses the following background art. That is, Patent Literature 1 discloses a technique for estimating whether a user is standing or sitting based on acceleration information measured by an acceleration sensor of a mobile terminal possessed by a passenger riding in a vehicle.

Japanese Patent No. 6144502

As described in Patent Literature 1, the acceleration measured by the acceleration sensor of the portable terminal possessed by the passenger on board the vehicle has a certain correlation with the acceleration generated in the vehicle body. Therefore, it is basically conceivable that the acceleration sensor of the mobile terminal can be used instead of the acceleration sensor installed for each vehicle or truck. However, for example, as shown in FIG. 11, the states of the portable terminals 2-a to 2-e possessed by the plurality of passengers 100-a to 100-e in the car 3b vary. Therefore, when trying to perform highly accurate evaluation, the acceleration measured by the acceleration sensor installed on the vehicle body cannot be directly replaced with the acceleration measured by the acceleration sensor of the mobile terminal. FIG. 11 is a schematic diagram showing an example of the states of the mobile terminals 2-a to 2-e inside the vehicle 3b.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a driving state monitoring device and a driving state monitoring method that eliminate the need to install an acceleration sensor for each vehicle.

In order to solve the above-described problems, one aspect of the present invention provides a terminal state determination unit that determines whether a state of a mobile terminal that is moving in a vehicle satisfies a predetermined condition that makes the state suitable for measurement; The driving state monitoring device includes an abnormality detection unit that detects an abnormality of the vehicle or the track on which the vehicle travels, based on the acceleration measured by the mobile terminal whose state of the terminal satisfies the predetermined condition.

Further, according to one aspect of the present invention, the terminal state determination unit determines whether the attitude angle of the mobile terminal is within a predetermined range and the screen of the mobile terminal is on, or when the mobile terminal is in the vehicle. The operating state monitoring device determines that the predetermined condition is satisfied when the vehicle is connected to a predetermined installed charger.

Further, according to one aspect of the present invention, the acceleration in the longitudinal direction of the vehicle is calculated by differentiating the speed of the vehicle, and the acceleration due to centrifugal force is calculated based on the position information of the mobile terminal and the speed of the vehicle. and a vehicle acceleration calculation unit that determines the vertical direction, the front-rear direction, and the left-right direction of the vehicle based on the attitude angle of the mobile terminal from the acceleration measured by the mobile terminal that satisfies the predetermined condition. a terminal acceleration calculation unit that calculates each acceleration of the mobile terminal; and based on a comparison result between each acceleration calculated by the vehicle acceleration calculation unit and each acceleration calculated by the terminal acceleration calculation unit, a user state determination unit that determines whether the state of the user holding the portable terminal is standing or sitting; Based on the acceleration measured by the mobile terminal determined to be in the sitting position, an abnormality in the vehicle or the track on which the vehicle travels is detected, and the mobile terminal satisfies the predetermined condition and is in the sitting position. The driving state monitoring device detects an abnormality of the vehicle or the track on which the vehicle travels, based on the determined acceleration measured by the portable terminal.

Further, according to one aspect of the present invention, the user condition determination unit determines if the magnification of each acceleration calculated by the terminal acceleration calculation unit with respect to each acceleration calculated by the vehicle acceleration calculation unit is equal to or greater than a predetermined threshold value. The operating state monitoring device determines that the user is in the standing position when the user is in the standing position, and otherwise determines that the user is in the sitting position.

In one aspect of the present invention, the terminal state determination unit determines whether or not the state of the mobile terminal in motion satisfies a predetermined condition suitable for measurement, and the abnormality detection unit determines whether the above-described condition is satisfied. The driving state monitoring method detects an abnormality of the vehicle or the track on which the vehicle travels, based on the acceleration measured by the mobile terminal whose state satisfies the predetermined condition.
is.

According to each aspect of the present invention, it is possible to eliminate the need to install an acceleration sensor for each vehicle. Also, acceleration data can be obtained at many locations within the vehicle.

1 is a schematic diagram showing a schematic configuration example of a track vehicle monitoring system according to an embodiment of the present invention; FIG. 2 is a block diagram showing a configuration example of a mobile terminal 2 shown in FIG. 1; FIG. 2 is a diagram showing a configuration example of a charger 80 shown in FIG. 1; FIG. 2 is a block diagram showing a configuration example of a processing device 1 shown in FIG. 1; FIG. 2 is a flowchart showing an operation example of the processing device 1 shown in FIG. 1; 2 is a schematic diagram for explaining an operation example of the processing device 1 shown in FIG. 1; FIG. 2 is a schematic diagram for explaining an operation example of the processing device 1 shown in FIG. 1; FIG. 2 is a schematic diagram for explaining an operation example of the processing device 1 shown in FIG. 1; FIG. 2 is a schematic diagram for explaining an operation example of the processing device 1 shown in FIG. 1; FIG. 1 is a schematic block diagram showing the configuration of a computer according to one embodiment of the present invention; FIG. FIG. 3 is a schematic diagram showing an example of a state of a mobile terminal inside a vehicle;

Embodiments of the present invention will be described below with reference to the drawings. In each figure, the same reference numerals are given to the same or corresponding configurations, and the description thereof will be omitted as appropriate.

FIG. 1 is a schematic diagram showing a schematic configuration example of a track vehicle monitoring system 10 according to an embodiment of the present invention. The track vehicle monitoring system 10 shown in FIG. 1 includes a processing device 1, a plurality of portable terminals 2-1 and 2-2, and a plurality of chargers 80-1 and 80-2. Mobile terminals 2-1 and 2-2 (hereinafter also collectively referred to as mobile terminals 2) are information processing terminals carried by users 100-1 and 100-2, such as smartphones, mobile phones, and wearable terminals. , smart devices such as smart watches. In the example shown in FIG. 1, a user 100-1 gets on a vehicle 3-1 of a train 30-1 running on a track 4 from A station 5-1 to B station 5-2. A user 100-2 is in a vehicle 3-2 of No. 1. A charger 80-1 is a charger for the mobile terminal 2 installed in the vehicle 3-1, and a charger 80-2 is a charger for the mobile terminal 2 installed in the vehicle 3-2. be. Hereinafter, chargers 80-1 and 80-2 are also collectively referred to as charger 80. FIG. In the following description, the train 30-1 and other trains are collectively referred to as the train 30. Further, the users 100-1 and 100-2 are collectively referred to as the user 100 hereinafter.

The mobile terminal 2 transmits position information, acceleration information, attitude angle information, charger information, etc. to the processing device 1 via the communication network 6 in association with the identification information and time information of the mobile terminal. The train 30-1 is equipped with a speed sensor 8 on the vehicle 3-1, and transmits speed information indicating the traveling speed of the vehicle 3-1 measured by the speed sensor 8 in correspondence with the identification information of the vehicle and the time information via the communication network 6. to the processing device 1 via. The charger 80 transmits the identification information of the portable terminal and the like to the processing device 1 via the communication network 6 in association with the identification information of the charger and the time information. The portable terminal 2, the train 30, and the charger 80 may transmit the above information directly to the processing device 1, or may transmit the above information to the processing device via the storage device 7 connected to the communication network 6, for example. 1 may be sent. The communication network 6 includes a mobile communication network, the Internet, a local communication network, etc., and transmits and receives predetermined information among the processing device 1, the storage device 7, the portable terminal 2, the train 30, and the charger 80. FIG.

FIG. 2 is a block diagram showing a configuration example of the mobile terminal 2 shown in FIG. In the configuration example shown in FIG. 2, the portable terminal 2 is configured by a computer and its peripheral devices, etc., and functions configured by combining hardware such as the computer and its peripheral devices and software such as programs executed by the computer. As components, a communication unit 21, a display input unit 22, a time acquisition unit 23, a position information acquisition unit 24, an acceleration detection unit 25, an attitude angle detection unit 26, a lighting state detection unit 27, and an application An execution unit 28 , a storage unit 29 and a charging control unit 20 are provided.

The communication unit 21 performs wireless communication and wired communication corresponding to one or more types of communication standards such as a mobile communication network, wireless LAN (local area network), short-range communication, serial communication, and the like. It transmits and receives predetermined information to and from the device 80 . The display input unit 22 is configured by a combination of a liquid crystal display panel, an organic electroluminescence display panel, and a touch sensor, and displays images and receives input operations. The time acquisition unit 23 acquires information indicating the date and time (time information) from a clock circuit of the mobile terminal 2, for example. The position information acquisition unit 24 has a receiver for a satellite positioning system, etc., and acquires the position information of the mobile terminal 2 using the satellite positioning system. Alternatively, the location information acquisition unit 24 uses the communication unit 21 to acquire location information of the mobile terminal 2 based on information obtained from a base station of a mobile communication network or information obtained from an access point of a wireless LAN. The acceleration detection unit 25 has an acceleration sensor and detects triaxial components (acceleration information) of acceleration of the mobile terminal 2 . The posture angle detection unit 26 uses the acceleration detection unit 25, a gyro sensor, a geomagnetic sensor, and the like included in the mobile terminal 2 to determine the posture angle of the mobile terminal 2 (angle of inclination from the vertical direction in this embodiment) (posture angle information ) is detected. The lighting state detection unit 27 detects whether the display of the display input unit 22 is in a lighting state or in a non-lighting state (screen lighting information). The application executing unit 28 executes a predetermined application program or the like on a predetermined OS (Operating System). The storage unit 29 stores, for example, position information, acceleration information, posture angle information, screen lighting information, etc. in association with time information. When the charging control unit 20 is connected to the charger 80, for example, the charging control unit 20 receives identification information of the charger 80 from the charger 80, associates the received identification information with time information, and sends the communication unit 21 as charger information. to the processing device 1 via the The charger information includes, for example, information indicating the charging start time, information indicating the charging end time, information indicating whether or not the charger 80 is connected, and the like.

In the present embodiment, the mobile terminal 2 associates the mobile terminal identification information with the time information at a predetermined cycle when an application program for acquiring operation information of the train 30 is executed by the application execution unit 28, for example. Then, part or all of the position information, the acceleration information, the posture angle information, and the screen lighting information are transmitted from the communication unit 21 to the processing device 1 via the communication network 6 . At that time, the acceleration information is detected by the acceleration detection unit 25 and stored in the storage unit 29 every 10 milliseconds, for example, and the position information, the posture angle information, and the screen lighting information are acquired at a cycle different from 10 milliseconds. It is acquired by the unit 24 , the attitude angle detection unit 26 and the lighting state detection unit 27 and stored in the storage unit 29 . Note that, when the mobile terminal 2 is connected to the charger 80, the mobile terminal identification information and the time information are associated with the mobile terminal identification information and the time information at a predetermined cycle, and among the position information, the acceleration information, the attitude angle information, and the screen lighting information, may be transmitted from the communication unit 21 to the processing device 1 via the charger 80 and the communication network 6 .

In addition, the mobile terminal 2 transmits the information stored in the storage unit 29 to the communication network 6 from the communication unit 21 at predetermined time intervals, for example, during movement from the A station 5-1 to the B station 5-2. to the processing device 1 via the communication unit 21, or after arriving at the B station 5-2, for example, all information acquired during the movement from the A station 5-1 to the B station 5-2 is collectively communicated from the communication unit 21. It is transmitted to the processing device 1 via the network 6 . The mobile terminal identification information can be, for example, identification information such as a subscriber number, user identification information when user registration is performed on the processing device 1 or the like using an application program, or the like.

Next, a configuration example of the charger 80 shown in FIG. 1 will be described with reference to FIG. FIG. 3A is a side view schematically showing the outline of the external configuration of the charger 80. FIG. In the example shown in FIG. 3A, the charger 80 has a shape that can detachably fix the mobile terminal 2 as a charging cradle or a charging stunt. FIG. 3(b) is a block diagram showing a configuration example of the charger 80 shown in FIG. The charger 80 is composed of a built-in computer, its peripheral devices, a charging device, etc., and has a functional configuration composed of a combination of hardware such as the computer and its peripheral devices, and software such as programs executed by the computer. A charging unit 81 , an inter-terminal communication unit 82 , and an inter-device communication unit 83 are provided as elements. The charging unit 81 charges the mobile terminal 2 when the connection terminal of the mobile terminal 2 is connected to the terminal 80a. The inter-terminal communication unit 82 transmits and receives predetermined information to and from the mobile terminal 2 via the terminal 80a. The inter-terminal communication unit 82 transmits, for example, identification information of the charger 80 to the mobile terminal 2 when the mobile terminal 2 is connected. Alternatively, when the mobile terminal 2 is connected, the inter-terminal communication section 82 receives, for example, the identification information of the mobile terminal from the mobile terminal 2, associates the received identification information with the time information, and sends the inter-device communication section 83 It transmits to the processing device 1 via the communication network 6 . Alternatively, when the mobile terminal 2 is connected, the inter-terminal communication unit 82 receives position information, acceleration information, and attitude angle information from the mobile terminal 2 in association with the mobile terminal identification information and the time information at predetermined intervals. and the screen lighting information, part or all of it is received and transmitted from the inter-device communication unit 83 to the processing device 1 via the communication network 6 . The inter-device communication unit 83 transmits and receives predetermined information to and from the processing device 1 via the communication network 6 . When the mobile terminal 2 and the charger 80 are connected, the position information, the acceleration information, the posture angle information, the screen lighting information, etc. can be transmitted to the processing device 1 by either the mobile terminal 2 or the charger 80. You can do it with Note that the charger 80 may wirelessly communicate with the mobile terminal 2 or wirelessly transmit charging power. However, in this case, it is desirable that the charger 80 has a mechanism for detachably fixing the portable terminal 2 without using the terminal 80a.

Next, a configuration example of the processing device 1 shown in FIG. 1 will be described with reference to FIG. FIG. 4 is a block diagram showing a configuration example of the processing device 1 shown in FIG. The processing device 1 is composed of a computer such as a server and its peripheral devices. A unit 11 , a storage unit 12 and a communication unit 14 are provided. In addition, the processing device 1 is one configuration example of the operating state monitoring device of the present invention.

The storage unit 12 stores station position information 121, track information 122, timetable information 123, operation information 124, vehicle-time-speed information 125, mobile terminal-time-position-acceleration-attitude angle-screen lighting-charger information 126. , portable terminal-used vehicle information 127, calculation result information 128, and vehicle-charger information 129 are stored.

The station position information 121 is, for example, position information of stations such as A station 5-1 and B station 5-2 shown in FIG. The track information 122 includes track position information such as track 4 between A station 5-1 and B station 5-2 shown in FIG. 1, track gradient information, track cant information, and track curvature radius information. and so on. The timetable information 123 includes information indicating the scheduled arrival and departure times of each train 30 such as the train 30-1 at each station such as A station 5-1 and B station 5-2, and information on seats of each train 30 (reserved seat information indicating the direction and number of seats, the direction and number of non-reserved seats, whether all seats are reserved, etc.). The operation information 124 includes information indicating the actual arrival and departure times of each train 30 such as the train 30-1 at each station such as the A station 5-1 and the B station 5-2.

Vehicle-time-speed information 125 includes time-series data of the actual running speed of each train 30, such as train 30-1. The mobile terminal-time-position-acceleration-attitude angle-screen lighting-charger information 126 is time-series position information, acceleration information, and attitude measured by each mobile terminal 2 such as the mobile terminals 2-1 and 2-2. It includes information in which each information such as corner information, screen lighting information, and charger information is associated with mobile terminal identification information and time information. The mobile terminal-utilized vehicle information 127 includes the usage of each mobile terminal 2 such as the mobile terminals 2-1 and 2-2 (or each user 100 carrying each mobile terminal 2) of each train 30 such as the train 30-1. Contains information representing history. The calculation result information 128 includes information representing various calculation results calculated by the processing unit 11 in the past. The vehicle-charger information 129 includes identification information of the charger 80 installed in each vehicle 3 in association with the identification information of each vehicle 3 and information indicating the installation position and orientation.

The communication unit 14 transmits and receives predetermined information to, for example, the processing device 1, the storage device 7, the vehicle 3, the charger 80, and the like via the communication network 6. FIG.

The processing unit 11 includes, as functional components, a data storage unit 111, a data extraction unit 112, a terminal state determination unit 113, a vehicle acceleration calculation unit 114, a terminal acceleration calculation unit 115, a user state determination unit 116, and an abnormality detection unit 117. Prepare.

The data accumulation unit 111 stores the speed information received from the vehicle 3 in the storage unit 12 as vehicle-time-speed information 125, and stores each information received from the mobile terminal 2 as mobile terminal-time-position-acceleration-attitude angle. - Screen lighting - Stored in storage unit 12 as charger information 126 .

The data extraction unit 112 extracts information to be processed from the storage unit 12 when the processing unit 11 performs acceleration estimation or abnormality detection for a specific section of the track 4, a specific train 30, or a specific vehicle 3. do. For example, for a train 30-1 that is operated from A station 5-1 to B station 5-2 on a certain date and time, the processing device 1 detects the abnormality of each car 30-1 and 30-2 and When detecting an abnormality in the track 4 up to the station 5-2, the data extraction unit 112 extracts (or identifies) the following information. That is, the data extraction unit 112 extracts the time-series speed information measured by the speed sensor 8 when the train 30-1 travels from the A station 5-1 to the B station 5-2 as vehicle-time-speed information. Extract from 125. In addition, the data extraction unit 112 extracts time-series data for each mobile terminal 2 whose position information matches the running position of the train 30-1 from A station 5-1 to B station 5-2 within a predetermined error range. Each piece of information such as position information, acceleration information, attitude angle information, screen lighting information, charger information, etc. is extracted from mobile terminal-time-position-acceleration-attitude angle-screen lighting-charger information 126 .

The terminal state determination unit 113 determines whether or not the state of the mobile terminal 2 moving in the vehicle 3 satisfies a predetermined condition suitable for measurement. The predetermined condition is a condition that the holding state and posture of the mobile terminal 2 are suitable as targets for evaluating acceleration. For example, when the attitude angle of the mobile terminal 2 is within a predetermined range and the screen of the mobile terminal 2 is lit, the terminal state determination unit 113 determines that the predetermined condition is satisfied. Alternatively, the terminal state determination unit 113 determines that the predetermined condition is satisfied, for example, when the mobile terminal 2 is connected to a predetermined charger 80 installed in the vehicle 3 . Alternatively, the terminal state determination unit 113 determines whether the attitude angle of the mobile terminal 2 is within a predetermined range and the screen of the mobile terminal 2 is lit, or when the mobile terminal 2 is installed in the vehicle 3 and the predetermined charging state is set. If it is connected to the device 80, it is determined that the predetermined condition is satisfied.

The vehicle acceleration calculation unit 114 calculates the speed of the vehicle 3 based on each piece of information of the mobile terminal 2 extracted by the data extraction unit 112 and determined by the terminal state determination unit 113 that the state of the mobile terminal 2 satisfies a predetermined condition. The acceleration in the longitudinal direction of the vehicle 3 is calculated by differentiation, and the acceleration due to the centrifugal force is calculated based on the position information of the mobile terminal 2 and the speed of the vehicle 3 . Here, with reference to FIG. 6, the front-back, left-right, and up-down directions of the vehicle 3 in this embodiment will be described. FIG. 6 is a schematic diagram for explaining definitions of the front-back, left-right, and up-down directions of the vehicle 3 in the processing of the processing device 1 shown in FIG. As shown in FIG. 6A, the floor surface of the vehicle 3 is defined as a reference surface 3a, the traveling direction of the vehicle 3 is defined as the front-rear direction of the vehicle 3 (Xc-axis direction), and the reference surface 3a is defined relative to the front-rear direction of the vehicle 3. The direction perpendicular to the top is defined as the left-right direction of the vehicle 3 (Yc-axis direction), and the vertical direction with respect to the reference plane 3a is defined as the vertical direction of the vehicle 3 (Zc-axis direction). When the track 4 is horizontal as shown in FIG. 6(a), the vertical direction (Zc-axis direction) of the vehicle 3 coincides with the vertical direction (the direction of gravity). When the track 4 has a slope, or when the track 4 has a cant (super-slope) as shown in FIG. or a direction perpendicular to the reference plane 3a (Zc2-axis direction). Note that the correspondence relationship between the coordinates in the vertical direction (Zc1-axis direction) and the coordinates in the direction perpendicular to the reference plane 3a (Zc2-axis direction) is the information on the slope of the track, the information on the cant of the track, the information on the cant of the track, and the can be obtained based on the information of the radius of curvature of the vehicle 3, the speed information of the vehicle 3, and the like.

For example, the vehicle acceleration calculation unit 114 differentiates the velocity of the vehicle 3 (Vc-Xc (velocity in the Xc-axis direction)) shown in FIG. Xc-axis direction) acceleration (Ac-Xc) is calculated. 8A and 8B are schematic diagrams for explaining an operation example of the processing device 1 shown in FIG. 1, and FIG. FIG. 8B is a schematic diagram showing an example of the change over time of the velocity (Vc−Xc) of FIG. 8A, and FIG. FIG. 4 is a schematic diagram showing an example of temporal change in acceleration (Ac−Xc);

The vehicle acceleration calculation unit 114 may calculate the longitudinal acceleration of the vehicle 3 by differentiating the time series of the speed measured by the vehicle speed sensor 8, or may differentiate the time series of the position information of the mobile terminal 2. The acceleration in the longitudinal direction of the vehicle 3 may be calculated by further differentiating the time series of the velocity of the vehicle 3 obtained in the above manner.

The vehicle acceleration calculation unit 114 also calculates the mobile terminal 2 based on each piece of information of the mobile terminal 2 extracted by the data extraction unit 112 and determined by the terminal state determination unit 113 that the state of the mobile terminal 2 satisfies a predetermined condition. Acceleration due to centrifugal force is calculated based on the position information of the vehicle 3 and the speed of the vehicle 3 . The centrifugal force is the extra force corresponding to the cant deficit. The vehicle acceleration calculator 114 calculates acceleration due to centrifugal force based on the speed of the vehicle 3, track cant information, track curvature radius information, and the like included in the track information 122 corresponding to the position information of the mobile terminal 2. be able to.

The terminal acceleration calculation unit 115 shown in FIG. 4 is a three-axis acceleration measured by the mobile terminal 2 that is extracted by the data extraction unit 112 and that the terminal state determination unit 113 determines that the state of the mobile terminal 2 satisfies a predetermined condition. From the components, each acceleration of the mobile terminal 2 in the vertical direction, the front-rear direction, and the left-right direction of the vehicle 3 is calculated based on the attitude angle of the mobile terminal 2 . That is, the terminal acceleration calculation unit 115 calculates the component of the acceleration of the mobile terminal 2 in the vertical direction of the vehicle 3 (Zc-axis direction), the component in the longitudinal direction of the vehicle 3 (Xc-axis direction), and the horizontal direction of the vehicle 3 (Yc-axis direction). ). At this time, the terminal acceleration calculation unit 115 calculates, for example, the acceleration in the longitudinal direction of the vehicle 3 calculated by the vehicle acceleration calculation unit 114 based on the three-axis components of the acceleration measured by the mobile terminal 2 moving in the vehicle 3. A component with a relatively high correlation coefficient (or a component with a correlation coefficient higher than a predetermined threshold) can be used as the component of the acceleration of the mobile terminal 2 in the longitudinal direction of the vehicle 3 . Further, the terminal acceleration calculation unit 115 calculates the vehicle 3 acceleration of the mobile terminal 2 based on the attitude angle information of the mobile terminal 2 based on the three-axis components of the acceleration measured by the mobile terminal 2 while moving in the vehicle 3, for example. is perpendicular to the vertical component of the vehicle 3 of the acceleration of the mobile terminal 2 and has a relatively high correlation coefficient with the longitudinal acceleration of the vehicle 3 calculated by the vehicle acceleration calculation unit 114. (or the component whose correlation coefficient is higher than a predetermined threshold value) is set as the component of the acceleration of the mobile terminal 2 in the longitudinal direction of the vehicle 3 . Then, the terminal acceleration calculation unit 115 calculates the component of the acceleration of the mobile terminal 2 in the vertical direction of the vehicle 3 and the component of the acceleration of the mobile terminal 2 in the longitudinal direction of the vehicle 3 as the component perpendicular to the component of the acceleration of the mobile terminal 2 in the vehicle 3 direction. , the component in the left-right direction is calculated.

An operation example of the terminal acceleration calculator 115 will be described with reference to FIGS. 7 to 9. FIG. 7 to 9 are schematic diagrams for explaining an operation example of the processing device 1 shown in FIG. FIG. 7A is a schematic diagram showing an example of acceleration in three axial directions detected by the acceleration detection unit 25 shown in FIG. 2 in this embodiment. In the example shown in FIG. 7A, the three axial directions of acceleration detected by the acceleration detection unit 25 are the zs-axis direction perpendicular to the display screen 22a of the display input unit 22 shown in FIG. The xs-axis direction (longitudinal direction) and the ys-axis direction of the horizontal direction of the display screen 22a. In this case, the acceleration detection unit 25 shown in FIG. 2, for example, as shown in FIG. Detection is performed using ys and the component As-zs in the zs-axis direction. FIG. 7A shows a state in which the user 100 holds the mobile terminal 2 at a certain attitude angle.

As shown in FIG. 7C, the terminal acceleration calculator 115 calculates the acceleration of the mobile terminal 2 from the three-axis components (As-xs, As-ys, and As-zs) of the acceleration As detected by the mobile terminal 2. The purpose is to obtain the component As-Xc in the longitudinal direction (Xc-axis direction) of the vehicle 3, the component As-Yc in the lateral direction (Yc-axis direction), and the component As-Zc in the vertical direction (Zc-axis direction) of As. do. FIG. 7C shows the acceleration As detected by the mobile terminal 2 as a component As-Xc in the longitudinal direction (Xc-axis direction) of the vehicle 3 and a component As-Yc in the lateral direction (Yc-axis direction) of the vehicle 3. , an example represented by the component As-Zc in the vertical direction (Zc-axis direction) of the vehicle 3. FIG. When the posture angle shown in FIG. 7B is known, the terminal acceleration calculation unit 115 calculates the vehicle position shown in FIG. 3 can be uniquely calculated in the vertical direction (Zc-axis direction). However, even if the attitude angle is known, the component As-Xc in the longitudinal direction (Xc-axis direction) of the vehicle 3 and the component As-Yc in the lateral direction (Yc-axis direction) of the vehicle 3 are different in the vertical direction (Zc-axis direction). The direction is not uniquely determined as long as it is known that the components are in the directions along the perpendicular plane and the components in the directions perpendicular to each other.

Therefore, the terminal acceleration calculation unit 115, for example, is perpendicular to the component As-Zc of the acceleration As of the mobile terminal 2 in the vertical direction (Zc-axis direction) of the vehicle 3, and the front-rear direction of the vehicle 3 calculated by the vehicle acceleration calculation unit 114. A component having a relatively high correlation coefficient (or a component having a correlation coefficient higher than a predetermined threshold value) with the acceleration Ac-Xc (in the Xc-axis direction) is taken as ) is the component As-Xc. For example, the terminal acceleration calculation unit 115 calculates the component As-Zc of the acceleration of the mobile terminal 2 in the vertical direction of the vehicle 3 based on the attitude angle information of the mobile terminal 2 based on the three-axis components of the acceleration measured by the mobile terminal 2 . is perpendicular to the vertical component As-Zc of the vehicle 3 of the acceleration of the mobile terminal 2, and the correlation coefficient with the longitudinal acceleration Ac-Xc of the vehicle 3 calculated by the vehicle acceleration calculation unit 114 is relatively high. The component (or the component whose correlation coefficient is higher than a predetermined threshold value) is set as the component As-Xc of the acceleration of the mobile terminal 2 in the longitudinal direction of the vehicle 3 .

For example, as shown in FIG. 7D, the terminal acceleration calculator 115 defines a virtual X-axis Xc1 and a Y-axis Yc1 on a plane Sxy perpendicular to the vertical direction (Zc-axis direction) of the vehicle 3 . Then, the terminal acceleration calculation unit 115 calculates the component As-Xc1 of the acceleration As in the vertical direction (Zc-axis direction) of the vehicle 3 based on the component As-Zc of the acceleration As of the mobile terminal 2 in the vertical direction (Zc-axis direction) of the acceleration As, and the component As-Xc1 of the acceleration As , the component As-Yc1 in the Yc1-axis direction of is calculated. Then, the terminal acceleration calculation unit 115 calculates the correlation coefficient between the longitudinal acceleration Ac-Xc of the vehicle 3 calculated by the vehicle acceleration calculation unit 114 and the component As-Xc1 of the acceleration As of the portable terminal 2 in the Xc1 axis direction. . That is, the terminal acceleration calculation unit 115 calculates, for example, the temporal change in the longitudinal acceleration Ac-Xc of the vehicle 3 as shown in FIG. 9A and the acceleration As of the mobile terminal 2 as shown in FIG. 9(d), the acceleration Ac−Xc in the longitudinal direction of the vehicle 3 and the acceleration As of the portable terminal 2 along the Xc1 axis A correlation coefficient of the directional component As-Xc1 is calculated. The correlation coefficient is, for example, obtained by dividing the covariance of two variables by the product of each standard deviation of each variable. It means nothing.

Next, as shown in FIG. 7D, the terminal acceleration calculation unit 115 rotates the X-axis Xc1 and the Y-axis Yc1 by a predetermined angle on the plane Sxy to generate a new provisional X-axis Xc2 and Y-axis Yc2. defined, and based on the component As-Zc of the acceleration As of the mobile terminal 2 in the vertical direction (Zc-axis direction) of the vehicle 3, the component As-Xc2 of the acceleration As in the Xc2-axis direction and the component of the acceleration As in the Yc2-axis direction Calculate As-Yc2. Then, the terminal acceleration calculation unit 115 calculates, for example, the temporal change in the longitudinal acceleration Ac-Xc of the vehicle 3 as shown in FIG. 9A and the acceleration As of the mobile terminal 2 as shown in FIG. 9(e), the acceleration Ac−Xc in the longitudinal direction of the vehicle 3 and the acceleration As of the portable terminal 2 along the Xc2 axis A correlation coefficient of the directional component As-Xc2 is calculated.

Then, the terminal acceleration calculation unit 115 rotates the provisional X-axis and the Y-axis by 90 degrees at each predetermined angle, for example, and calculates the acceleration Ac−Xc in the longitudinal direction of the vehicle 3 and the acceleration As of the plurality of mobile terminals 2. A correlation coefficient with a provisional component in the X-axis direction is calculated and compared, and the component with a relatively high correlation coefficient is taken as the component of the acceleration of the mobile terminal 2 in the longitudinal direction of the vehicle 3 . Alternatively, the terminal acceleration calculation unit 115, for example, rotates the virtual X-axis and the Y-axis to calculate the acceleration Ac−Xc in the longitudinal direction of the vehicle 3 and the virtual X-axis component of the acceleration As of the mobile terminal 2. is calculated and compared with a predetermined threshold value, and a component with a higher correlation coefficient than the predetermined threshold value is defined as the component of the acceleration of the mobile terminal 2 in the longitudinal direction of the vehicle 3 . For example, in the example shown in FIG. 9, the terminal acceleration calculation unit 115 determines that the correlation coefficient between the longitudinal acceleration Ac-Xc of the vehicle 3 and the component As-Xc1 of the acceleration As of the mobile terminal 2 in the Xc1-axis direction is Xc2 If it is higher than the correlation coefficient with other components such as the axial component As-Xc2 (closer to 1 or -1), then the component As-Xc1 is the acceleration of the mobile terminal 2 in the longitudinal direction of the vehicle 3 (Xc-axis direction). ) is the component As-Xc. Alternatively, if the absolute value of the correlation coefficient between the acceleration Ac−Xc in the longitudinal direction of the vehicle 3 and the component As−Xc1 in the Xc1 axis direction of the acceleration As of the mobile terminal 2 is higher than a predetermined threshold, the terminal acceleration calculation unit 115 The component As-Xc1 is assumed to be the component As-Xc of the acceleration of the portable terminal 2 in the longitudinal direction of the vehicle 3 (Xc-axis direction). In this case, the component As-Yc1 becomes the component As-Yc of the acceleration of the portable terminal 2 in the left-right direction of the vehicle 3 (Yc-axis direction).

Note that the acceleration of the mobile terminal 2 in the front-rear direction (Xc-axis direction) of the vehicle 3, the left-right The method of obtaining the component As-Yc in the direction (Yc-axis direction) and the component As-Zc in the vertical direction (Zc-axis direction) is not limited to the above. For example, if the train 30 has all seats reserved, it is estimated that the orientation of the mobile terminal 2 corresponds to the orientation of the seat when the mobile terminal 2 is in use. In this case, for example, based on the screen lighting information, the terminal acceleration calculation unit 115 calculates the acceleration As of the mobile terminal 2 shown in FIG. , the component As-xs in the xs-axis direction, the component As-ys in the ys-axis direction, and the component As-zs in the zs-axis direction of the acceleration of the mobile terminal 2 shown in FIG. It can be converted into a component As-Xc in the front-rear direction (Xc-axis direction), a component As-Yc in the left-right direction (Yc-axis direction), and a component As-Zc in the vertical direction (Zc-axis direction).

That is, in the present embodiment, as a method of determining which component of the acceleration in the three directions output from the mobile terminal 2 indicates the longitudinal acceleration of the vehicle 3, for example, the correlation with the longitudinal acceleration of the vehicle 3 is determined. A component with a high relational coefficient (waveforms with similar shapes) may be selected as the longitudinal acceleration of the vehicle. Alternatively, the orientation of the mobile terminal 2 may be estimated geometrically without depending on the correlation coefficient, depending on the usage status of the mobile terminal 2 based on, for example, the state of the seat and screen lighting information.

In addition, the user state determination unit 116 shown in FIG. (each acceleration of the mobile terminal 2 in the vertical direction, the front-back direction, and the left-right direction of the vehicle 3), the state of the user 100 holding the mobile terminal 2 is set to either the standing state or the sitting state. discriminate. For example, the user state determination unit 116 determines that the user is in a standing state when the magnification of each acceleration calculated by the terminal acceleration calculation unit 115 with respect to each acceleration calculated by the vehicle acceleration calculation unit 114 is equal to or greater than a predetermined threshold value. , otherwise it is determined to be in a sitting position.

Further, the abnormality detection unit 117 shown in FIG. 4 determines whether the vehicle 3 or the vehicle 3 runs based on the acceleration measured by the mobile terminal 2 whose state satisfies a predetermined condition in the determination by the terminal state determination unit 113 . Detect anomalies in track 4. The abnormality detection unit 117 detects, for example, the vehicle 3 or the vehicle 3 based on the acceleration measured by the mobile terminal 2 whose state satisfies a predetermined condition and is determined by the user state determination unit 116 to be in the standing state. detects an abnormality in the track 4 on which the . For example, the abnormality detection unit 117 detects the vehicle 3 or the vehicle based on the acceleration measured by the mobile terminal 2 that satisfies a predetermined condition and is determined to be in a sitting state by the user state determination unit 116 . 3 detects anomalies in the track on which it runs.

The abnormality detection unit 117 detects an abnormality of the vehicle 3 or the track 4 on which the vehicle 3 travels based on, for example, at least one of the acceleration Ac-Yc in the horizontal direction of the vehicle 3 and the acceleration Ac-Zc in the vertical direction of the vehicle 3. may be detected. For example, when the abnormality detection unit 117 generates a peculiar acceleration Ac-Yc in the horizontal direction of the vehicle 3 or Ac-Zc in the vertical direction of the vehicle 3 compared to other vehicles 3 or the train 30, It is determined that an abnormality (peculiar phenomenon) has occurred in the vehicle 3 or the train 30, and the result of determination is output (recorded, displayed, sent by e-mail, etc.). Further, for example, the abnormality detection unit 117 compares the lateral acceleration Ac−Yc of the vehicle 3 or the acceleration of the vehicle 3 at the same position on the track 4 with a plurality of vehicles 3 or trains 30 with respect to other positions. If a peculiar acceleration occurs in the vertical acceleration Ac-Zc, it is determined that an abnormality (a peculiar phenomenon) has occurred at that position on the trajectory 4, and the result of the determination is output (recorded, displayed, sent by e-mail etc.). Alternatively, the abnormality detection unit 117 may determine that an abnormality has occurred in the vehicle 3 or the track 4, for example, when the estimated vertical and horizontal acceleration data exceeds a predetermined threshold value. In this embodiment, the vertical acceleration and lateral acceleration generated in the vehicle 3 can be estimated from the obtained transfer function and the vertical acceleration and lateral acceleration data obtained from the mobile terminal 2. It is possible to determine that an abnormality has occurred when the estimated vertical acceleration or lateral acceleration is, for example, equal to or greater than a certain threshold value, even if an acceleration sensor is not installed in the vehicle.

Next, an outline of an operation example of the processing device 1 will be described with reference to FIG. FIG. 5 is a flow chart showing an example of an outline of processing when detecting whether or not an abnormality has occurred in the vehicle 3 or the track 4 of a certain train 30 in the processing device 1 shown in FIG. It is assumed that the storage unit 12 has already stored data to be processed received from the mobile terminal 2 and the train 30 .

In the example of operation shown in FIG. Data to be processed is extracted based on the operation information of the target vehicle 3 (step S101).

Next, the terminal state determination unit 113 determines whether the state of the portable terminal 2 traveling in the vehicle 3 satisfies a predetermined condition (step S102).

Next, the vehicle acceleration calculation unit 114 differentiates the speed of the vehicle 3 to calculate the acceleration in the longitudinal direction of the vehicle 3, and calculates the acceleration due to the centrifugal force based on the position information of the mobile terminal 2 and the speed of the vehicle 3. Calculate (step S103).

Next, the terminal acceleration calculation unit 115 calculates the vertical direction, the front-rear direction, and the left-right direction of the vehicle 3 based on the attitude angle of the mobile terminal 2 from the acceleration measured by the mobile terminal 3 whose state of the mobile terminal 2 satisfies a predetermined condition. Each acceleration of the mobile terminal 2 in the direction is calculated (step S104).

Next, the user state determination unit 116 determines the state of the user possessing the portable terminal 2 based on the result of comparison between each acceleration calculated by the vehicle acceleration calculation unit 114 and each acceleration calculated by the terminal acceleration calculation unit 115. is determined to be either the standing state or the sitting state (step S105).

Next, the abnormality detection unit 117 detects an abnormality of the vehicle 3 or the track 4 on which the vehicle 3 travels, based on the acceleration measured by the mobile terminal 2 that satisfies a predetermined condition and is determined to be in a sitting position. is detected (step S106).

Next, the abnormality detection unit 117 detects the vehicle 3 or the track 4 on which the vehicle 3 travels, based on the acceleration measured by the mobile terminal 2 that satisfies a predetermined condition and is determined to be in the standing position. An abnormality is detected (step S107).

As described above, according to the present embodiment, the acceleration of the vehicle can be estimated from the acceleration measured by the mobile terminal 2, so it is unnecessary to install an acceleration sensor for each vehicle.

In the operation example of the processing apparatus 1, the data to be processed is stored in the storage unit 12 and then processed. Based on the obtained data, processes such as acceleration estimation and abnormality detection may be performed at any time. In this case, anomaly detection can be performed substantially in real time.

In the above-described embodiment, when the position information is acquired, the vehicle in which the user is riding may be specified by using the wireless LAN signal or the satellite positioning signal in the vehicle.

In the above embodiment, when calculating the acceleration from the vehicle speed, if the time change of the vehicle speed is calculated as it is, high frequency components remain. may be cut.

Note that in each process using the attitude angle information in the above-described embodiment, instead of the attitude angle information, for example, screen lighting information, the usage state of an application, the input/output operation state, and the like are used. When it is estimated that there is an attitude angle, each process may be performed with the attitude angle as a predetermined fixed value. In this case, collection of attitude angle information can be omitted.

When comparing the acceleration of the mobile terminal 2 and the longitudinal acceleration of the vehicle 3, the data to be compared are the acceleration (power running) when departing from A station 5-1 and the deceleration when stopping at B station 5-2. It is preferable to use the entire series of acceleration data up to (regeneration). This is because it is assumed that if the vehicle is only coasting, the acceleration of the vehicle itself will not change much, and the accuracy of the correlation evaluation will be poor.

Further, in the above-described embodiment, the user 100 installs the charger 80 capable of fixing the mobile terminal 2 and charging the mobile terminal 2 in the vehicle so that the posture of the mobile terminal 2 can be maintained during charging. According to this configuration, by fixing the portable terminal 2 possessed by the user 100 at a specified position, accurate data can be obtained. As a mechanism for the processing device 1 to know that the portable terminal 2 is being charged by the charger 80, for example, charging can be performed by the user requesting charging within the application related to the operation information described above. It is possible to prepare a mechanism such that

Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to the above embodiments, and design changes and the like are also included within the scope of the present invention.

<Computer configuration>
FIG. 10 is a schematic block diagram showing the configuration of the computer according to the embodiment.
Computer 90 includes processor 91 , main memory 92 , storage 93 and interface 94 .
The above-described processing device 1 , mobile terminal 2 , storage device 7 , charger 80 and the like are implemented in computer 90 . The operation of each processing unit described above is stored in the storage 93 in the form of a program. The processor 91 reads out the program from the storage 93, develops it in the main memory 92, and executes the above processes according to the program. In addition, the processor 91 secures storage areas corresponding to the storage units described above in the main memory 92 according to the program.

The program may be for realizing part of the functions that the computer 90 is caused to exhibit. For example, the program may function in combination with another program already stored in the storage or in combination with another program installed in another device. Note that in other embodiments, the computer may include a custom LSI (Large Scale Integrated Circuit) such as a PLD (Programmable Logic Device) in addition to or instead of the above configuration. Examples of PLD include PAL (Programmable Array Logic), GAL (Generic Array Logic), CPLD (Complex Programmable Logic Device), and FPGA (Field Programmable Gate Array). In this case, part or all of the functions implemented by the processor may be implemented by the integrated circuit.

Examples of the storage 93 include HDD (Hard Disk Drive), SSD (Solid State Drive), magnetic disk, magneto-optical disk, CD-ROM (Compact Disc Read Only Memory), DVD-ROM (Digital Versatile Disc Read Only Memory). , semiconductor memory, and the like. The storage 93 may be an internal medium directly connected to the bus of the computer 90, or an external medium connected to the computer 90 via an interface 94 or communication line. Further, when this program is distributed to the computer 90 via a communication line, the computer 90 receiving the distribution may develop the program in the main memory 92 and execute the above process. In at least one embodiment, storage 93 is a non-transitory, tangible storage medium.

10 track vehicle monitoring system 1 processing device 2, 2-1, 2-2 mobile terminal 3, 3-1, 3-2 vehicle 4 track 6 communication network 8 speed sensor 30, 30-1 train 11 processing unit 12 storage unit 14 Communication unit 21 Communication unit 22 Display input unit 23 Time acquisition unit 24 Position information acquisition unit 25 Acceleration detection unit 26 Attitude angle detection unit 27 Lighting state detection unit 28 Application execution unit 29 Storage unit 80, 80-1, 80-2 Charger 111 Data accumulation unit 112 Data extraction unit 113 Terminal state determination unit 114 Vehicle acceleration calculation unit 115 Terminal acceleration calculation unit 116 User state determination unit 117 Abnormality detection unit

Claims (5)

a terminal state determination unit that determines whether or not a state of a mobile terminal that is moving in a vehicle satisfies a predetermined condition that makes the state suitable for measurement;
an abnormality detection unit that detects an abnormality of the vehicle or a track on which the vehicle travels, based on the acceleration measured by the mobile terminal whose state of the mobile terminal satisfies the predetermined condition ;
a vehicle acceleration calculation unit that calculates acceleration in the longitudinal direction of the vehicle by differentiating the speed of the vehicle, and calculates acceleration due to centrifugal force based on the position information of the mobile terminal and the speed of the vehicle;
From the acceleration measured by the mobile terminal whose state satisfies the predetermined condition, each acceleration of the mobile terminal in the vertical direction, the front-rear direction, and the left-right direction of the vehicle is calculated based on the attitude angle of the mobile terminal. a terminal acceleration calculator for calculating;
Based on the result of comparison between each acceleration calculated by the vehicle acceleration calculation unit and each acceleration calculated by the terminal acceleration calculation unit, the state of the user holding the portable terminal is determined to be either a standing state or a sitting state. a user state determination unit that determines whether
with
The abnormality detection unit detects an abnormality of the vehicle or the track on which the vehicle travels, based on the acceleration measured by the mobile terminal that satisfies the predetermined condition and is determined to be in the standing position. To detect,
Operating condition monitoring device. a terminal state determination unit that determines whether or not a state of a mobile terminal that is moving in a vehicle satisfies a predetermined condition that makes the state suitable for measurement;
an abnormality detection unit that detects an abnormality of the vehicle or a track on which the vehicle travels, based on the acceleration measured by the mobile terminal whose state of the mobile terminal satisfies the predetermined condition ;
a vehicle acceleration calculation unit that calculates acceleration in the longitudinal direction of the vehicle by differentiating the speed of the vehicle, and calculates acceleration due to centrifugal force based on the position information of the mobile terminal and the speed of the vehicle;
From the acceleration measured by the mobile terminal whose state satisfies the predetermined condition, each acceleration of the mobile terminal in the vertical direction, the front-rear direction, and the left-right direction of the vehicle is calculated based on the attitude angle of the mobile terminal. a terminal acceleration calculator for calculating;
Based on the result of comparison between each acceleration calculated by the vehicle acceleration calculation unit and each acceleration calculated by the terminal acceleration calculation unit, the state of the user holding the portable terminal is determined to be either a standing state or a sitting state. a user state determination unit that determines whether
with
The abnormality detection unit detects an abnormality of the vehicle or the track on which the vehicle travels, based on the acceleration measured by the mobile terminal that satisfies the predetermined condition and is determined to be in the sitting position. do,
Operating condition monitoring device. The terminal state determination unit determines whether the attitude angle of the mobile terminal is within a predetermined range and the screen of the mobile terminal is lit, or when the mobile terminal is connected to a predetermined charger installed in the vehicle. 3. The operating state monitoring device according to claim 1, wherein it is determined that the predetermined condition is satisfied when the device is connected. The user state determination unit determines that the user is in the standing state when a multiplying factor of each acceleration calculated by the terminal acceleration calculation unit with respect to each acceleration calculated by the vehicle acceleration calculation unit is equal to or greater than a predetermined threshold. and otherwise determine that the person is in the sitting position.
The operating state monitoring device according to any one of claims 1 to 3 . determining whether or not the state of the mobile terminal during movement in the vehicle satisfies a predetermined condition suitable for measurement by the terminal state determination unit;
detecting an abnormality of the vehicle or a track on which the vehicle travels, by an abnormality detection unit based on the acceleration measured by the mobile terminal whose state satisfies the predetermined condition;
A vehicle acceleration calculation unit calculates acceleration in the longitudinal direction of the vehicle by differentiating the speed of the vehicle, and calculates acceleration due to centrifugal force based on the position information of the mobile terminal and the speed of the vehicle,
Based on the attitude angle of the mobile terminal, the terminal acceleration calculation unit calculates the vertical direction, the front-back direction, and the left-right direction of the vehicle based on the acceleration measured by the mobile terminal that satisfies the predetermined condition. Calculate each acceleration of the mobile terminal,
The state of the user possessing the mobile terminal is determined by the user state determination unit based on the result of comparison between the acceleration calculated by the vehicle acceleration calculation unit and the acceleration calculated by the terminal acceleration calculation unit. distinguish between the sitting state and the sitting state,
The abnormality detection unit detects an abnormality of the vehicle or the track on which the vehicle travels, based on the acceleration measured by the mobile terminal that satisfies the predetermined condition and is determined to be in the standing position. To detect,
An operating state monitoring method.

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