JP2020148492A - Acceleration estimation device and acceleration estimation method - Google Patents

Acceleration estimation device and acceleration estimation method Download PDF

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JP2020148492A
JP2020148492A JP2019043949A JP2019043949A JP2020148492A JP 2020148492 A JP2020148492 A JP 2020148492A JP 2019043949 A JP2019043949 A JP 2019043949A JP 2019043949 A JP2019043949 A JP 2019043949A JP 2020148492 A JP2020148492 A JP 2020148492A
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acceleration
vehicle
mobile terminal
component
calculation unit
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JP7143238B2 (en
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章央 川内
Akihisa Kawauchi
章央 川内
内田 浩二
Koji Uchida
浩二 内田
浩幸 河野
Hiroyuki Kono
浩幸 河野
光明 星
Mitsuaki Hoshi
光明 星
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Mitsubishi Heavy Industries Engineering Ltd
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Abstract

To eliminate the need to install an acceleration sensor for each vehicle.SOLUTION: An acceleration estimation device of one aspect of the present invention includes: a vehicle acceleration calculation section configured to calculate an acceleration in a front-rear direction of the vehicle by differentiating a speed of the vehicle; an acceleration component calculation section configured to calculate an acceleration component in the front-rear direction of the vehicle of a mobile terminal based on triaxial components of the acceleration measured by the mobile terminal being moved on the vehicle; and a transmission characteristics calculation section configured to calculate transmission characteristics between a component in the front-rear direction of the vehicle of the acceleration of the mobile terminal acquired by the acceleration component calculation section and an acceleration in the front-rear direction of the vehicle calculated by the vehicle acceleration calculation section; a vehicle acceleration estimation section configured to estimate at least one of an acceleration in the left-right direction of the vehicle or an acceleration in the vertical direction of the vehicle based on the triaxial components of the acceleration measured by the mobile terminal, using the transmission characteristics calculated by the transmission characteristics calculation section.SELECTED DRAWING: Figure 2

Description

本発明は、加速度推定装置および加速度推定方法に関する。 The present invention relates to an acceleration estimation device and an acceleration estimation method.

例えば列車等の軌道系交通車両の台車の故障や軌道の異常により、車体に発生する加速度が大きくなることがある。この異常は車体に加速度センサを設置して加速度値をモニタリングすることで、把握可能である。ただし、これらの異常を検知するには、車両毎あるいは台車毎に加速度センサを設置する必要があり、車両数が多い場合は、センサ設置に手間がかかり、また、センサ設置費用も高くなる。 For example, the acceleration generated in the vehicle body may increase due to a failure of the bogie of a track-based traffic vehicle such as a train or an abnormality in the track. This abnormality can be grasped 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 trolley, and when the number of vehicles is large, it takes time to install the sensor and the sensor installation cost is high.

なお、特許文献1は、次のような背景技術を開示する。すなわち、特許文献1は、車両に乗車している乗客が所持する携帯端末が有する加速度センサで計測された加速度情報に基づき、端末の利用者が立位か座位かを推定する技術を開示する。 In addition, Patent Document 1 discloses the following background technology. That is, Patent Document 1 discloses a technique for estimating whether a user of a terminal is standing or sitting based on acceleration information measured by an acceleration sensor possessed by a mobile terminal possessed by a passenger in a vehicle.

特許第6144502号公報Japanese Patent No. 6144502

本発明は、上記事情を考慮してなされたものであり、車両毎に加速度センサを設置することを不要とすることができる加速度推定装置および加速度推定方法を提供することを目的とする。 The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide an acceleration estimation device and an acceleration estimation method that can eliminate the need to install an acceleration sensor for each vehicle.

上記課題を解決するため、本発明の一態様は、車両の速度を時間微分して前記車両の前後方向の加速度を算出する車両加速度算出部と、前記車両で移動中の携帯端末で計測された加速度の3軸成分に基づき、前記携帯端末の加速度の前記車両の前後方向の成分を求める加速度成分演算部と、前記加速度成分演算部が求めた前記携帯端末の加速度の前記車両の前後方向の成分と前記車両加速度算出部が算出した前記車両の前後方向の加速度との間の伝達特性を算出する伝達特性算出部と、前記伝達特性算出部が算出した前記伝達特性を用いて、前記携帯端末で計測された加速度の3軸成分に基づき、前記車両の左右方向の加速度または前記車両の上下方向の加速度の少なくとも一方を推定する車両加速度推定部とを備える加速度推定装置である。 In order to solve the above problems, one aspect of the present invention is measured by a vehicle acceleration calculation unit that calculates the acceleration in the front-rear direction of the vehicle by time-differentiating the speed of the vehicle and a mobile terminal that is moving in the vehicle. An acceleration component calculation unit that obtains a component of the acceleration of the mobile terminal in the front-rear direction of the vehicle based on a three-axis component of acceleration, and a component of the acceleration of the mobile terminal obtained by the acceleration component calculation unit in the front-rear direction of the vehicle. And the transmission characteristic calculation unit that calculates the transmission characteristic between the vehicle acceleration calculation unit and the vehicle's acceleration in the front-rear direction, and the transmission characteristic calculated by the transmission characteristic calculation unit are used in the mobile terminal. It is an acceleration estimation device including a vehicle acceleration estimation unit that estimates at least one of the left-right acceleration of the vehicle and the vertical acceleration of the vehicle based on the three-axis components of the measured acceleration.

また、本発明の一態様は、前記加速度成分演算部は、前記車両で移動中の携帯端末で計測された加速度の3軸成分に基づき、前記車両加速度算出部が算出した前記車両の前後方向の加速度との相関係数が比較的高い成分を、前記携帯端末の加速度の前記車両の前後方向の成分とする上記加速度推定装置である。 Further, in one aspect of the present invention, the acceleration component calculation unit is calculated by the vehicle acceleration calculation unit in the front-rear direction of the vehicle based on the three-axis component of the acceleration measured by the mobile terminal moving in the vehicle. The acceleration estimation device is a component having a relatively high correlation coefficient with acceleration as a component of the acceleration of the mobile terminal in the front-rear direction of the vehicle.

また、本発明の一態様は、前記加速度成分演算部は、前記車両で移動中の携帯端末で計測された加速度の3軸成分に基づき、前記携帯端末の姿勢角情報に基づいて前記携帯端末の加速度の前記車両の上下方向の成分を求め、前記携帯端末の加速度の前記車両の上下方向の成分と垂直で、前記車両加速度算出部が算出した前記車両の前後方向の加速度との相関係数が比較的高い成分を、前記携帯端末の加速度の前記車両の前後方向の成分とする上記加速度推定装置である。 Further, in one aspect of the present invention, the acceleration component calculation unit is based on the three-axis component of the acceleration measured by the mobile terminal moving in the vehicle, and based on the attitude angle information of the mobile terminal. The vertical component of the vehicle is obtained, and the correlation coefficient with the front-rear acceleration of the vehicle calculated by the vehicle acceleration calculation unit is perpendicular to the vertical component of the vehicle of the acceleration of the mobile terminal. The acceleration estimation device, wherein a relatively high component is a component of the acceleration of the mobile terminal in the front-rear direction of the vehicle.

また、本発明の一態様は、前記加速度の3軸成分を計測した前記携帯端末を、所定期間に所定回数以上、前記車両を利用した利用者の携帯端末に限定する対象限定部をさらに備え、前記伝達特性算出部が、前記対象限定部が限定した前記携帯端末で計測された前記加速度の3軸成分に基づき、前記伝達特性を過去の伝達特性も用いて統計的に算出する上記加速度推定装置である。 Further, one aspect of the present invention further includes a target limiting unit that limits the mobile terminal that measures the three-axis component of the acceleration to the mobile terminal of a user who uses the vehicle for a predetermined number of times or more in a predetermined period. The acceleration estimation device that the transmission characteristic calculation unit statistically calculates the transmission characteristic by using the past transmission characteristics based on the three-axis component of the acceleration measured by the mobile terminal limited by the target limitation unit. Is.

また、本発明の一態様は、前記伝達特性算出部は、始発駅から乗車した人の前記携帯端末の群と、途中駅から乗車した人の前記携帯端末の群とに分けて、前記群毎に前記伝達特性を統計的に算出する上記加速度推定装置である。 Further, in one aspect of the present invention, the transmission characteristic calculation unit is divided into a group of the mobile terminals of a person who boarded from the starting station and a group of the mobile terminals of a person who boarded from an intermediate station. This is the acceleration estimation device that statistically calculates the transmission characteristics.

また、本発明の一態様は、前記車両の左右方向の加速度または前記車両の上下方向の加速度の少なくとも一方に基づいて、前記車両または前記車両が走行する軌道の異常を検出する異常検出部をさらに備える上記加速度推定装置である。 Further, one aspect of the present invention further comprises an abnormality detection unit that detects an abnormality in the vehicle or the track on which the vehicle travels based on at least one of the left-right acceleration of the vehicle and the vertical acceleration of the vehicle. This is the acceleration estimation device provided.

また、本発明の一態様は、車両加速度算出部によって、車両の速度を時間微分して前記車両の前後方向の加速度を算出し、加速度成分演算部によって、前記車両で移動中の携帯端末で計測された加速度の3軸成分に基づき、前記携帯端末の加速度の前記車両の前後方向の成分を求め、伝達特性算出部によって、前記加速度成分演算部が求めた前記携帯端末の加速度の前記車両の前後方向の成分と前記車両加速度算出部が算出した前記車両の前後方向の加速度との間の伝達特性を算出し、車両加速度推定部によって、前記伝達特性算出部が算出した前記伝達特性を用いて、前記携帯端末で計測された加速度の3軸成分に基づき、前記車両の左右方向の加速度または前記車両の上下方向の加速度の少なくとも一方を推定する加速度推定方法である。 Further, in one aspect of the present invention, the vehicle acceleration calculation unit calculates the acceleration in the front-rear direction of the vehicle by time-differentiating the speed of the vehicle, and the acceleration component calculation unit measures the acceleration in the mobile terminal moving in the vehicle. Based on the three-axis component of the acceleration, the component of the acceleration of the mobile terminal in the front-rear direction of the vehicle is obtained, and the front-rear and rear of the vehicle of the acceleration of the mobile terminal obtained by the acceleration component calculation unit by the transmission characteristic calculation unit. The transmission characteristic between the direction component and the acceleration in the front-rear direction of the vehicle calculated by the vehicle acceleration calculation unit is calculated, and the transmission characteristic calculated by the transmission characteristic calculation unit is used by the vehicle acceleration estimation unit. This is an acceleration estimation method that estimates at least one of the left-right acceleration of the vehicle and the up-down acceleration of the vehicle based on the three-axis component of the acceleration measured by the mobile terminal.

また、本発明の一態様は、上述の加速度推定方法において、前記車両の左右方向の加速度または前記車両の上下方向の加速度の少なくとも一方に基づいて、前記車両または前記車両が走行する軌道の異常を検出するステップをさらに有する。 Further, in one aspect of the present invention, in the above-mentioned acceleration estimation method, an abnormality of the vehicle or the track on which the vehicle travels is determined based on at least one of the left-right acceleration of the vehicle and the vertical acceleration of the vehicle. It has an additional step to detect.

本発明の各態様によれば、車両毎に加速度センサを設置することを不要とすることができる。 According to each aspect of the present invention, it is not necessary to install an acceleration sensor for each vehicle.

本発明の一実施形態に係る軌道車両監視システムの概略構成例を示す模式図である。It is a schematic diagram which shows the schematic configuration example of the track vehicle monitoring system which concerns on one Embodiment of this invention. 図1に示す携帯端末2の構成例を示すブロック図である。It is a block diagram which shows the structural example of the mobile terminal 2 shown in FIG. 図1に示す処理装置1の構成例を示すブロック図である。It is a block diagram which shows the structural example of the processing apparatus 1 shown in FIG. 図1に示す処理装置1の動作例を示すフローチャートである。It is a flowchart which shows the operation example of the processing apparatus 1 shown in FIG. 図1に示す処理装置1の他の動作例を示すフローチャートである。It is a flowchart which shows the other operation example of the processing apparatus 1 shown in FIG. 図1に示す処理装置1の他の動作例を示すフローチャートである。It is a flowchart which shows the other operation example of the processing apparatus 1 shown in FIG. 図1に示す処理装置1の動作例を説明するための模式図である。It is a schematic diagram for demonstrating the operation example of the processing apparatus 1 shown in FIG. 図1に示す処理装置1の動作例を説明するための模式図である。It is a schematic diagram for demonstrating the operation example of the processing apparatus 1 shown in FIG. 図1に示す処理装置1の動作例を説明するための模式図である。It is a schematic diagram for demonstrating the operation example of the processing apparatus 1 shown in FIG. 図1に示す処理装置1の動作例を説明するための模式図である。It is a schematic diagram for demonstrating the operation example of the processing apparatus 1 shown in FIG. 図1に示す処理装置1の動作例を説明するための模式図である。It is a schematic diagram for demonstrating the operation example of the processing apparatus 1 shown in FIG. 本発明の一実施形態に係るコンピュータの構成を示す概略ブロック図である。It is a schematic block diagram which shows the structure of the computer which concerns on one Embodiment of this invention.

以下、図面を参照して本発明の実施形態について説明する。なお、各図において同一または対応する構成には同一の符号を付けて説明を適宜省略する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same or corresponding configurations are designated by the same reference numerals in the drawings, and the description thereof will be omitted as appropriate.

図1は、本発明の一実施形態に係る軌道車両監視システム10の概略構成例を示す模式図である。図1に示す軌道車両監視システム10は、処理装置1と、複数の携帯端末2−1および2−2を備える。携帯端末2−1および2−2(以下、総称して携帯端末2ともいう)は、利用者100−1および100−2が携帯する情報処理端末であり、例えば、スマートフォン、携帯電話機、ウェアラブル端末、スマートウォッチ等のスマートデバイスである。図1に示す例では、A駅5−1からB駅5−2へ向かって軌道4上を走行中の列車30−1の車両3−1に利用者100−1が乗車し、列車30−1の車両3−2に利用者100−2が乗車している。なお、以下、列車30−1と他の列車を総称する場合に列車30という。また、以下、利用者100−1および100−2を総称して利用者100ともいう。 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 and a plurality of mobile terminals 2-1 and 2-2. 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, and are, for example, smartphones, mobile phones, and wearable terminals. , Smart devices such as smart watches. In the example shown in FIG. 1, the user 100-1 gets on the vehicle 3-1 of the train 30-1 traveling on the track 4 from the A station 5-1 to the B station 5-2, and the train 30- User 100-2 is on the vehicle 3-2 of 1. Hereinafter, when train 30-1 and other trains are collectively referred to as train 30, it is referred to as train 30. In addition, hereinafter, users 100-1 and 100-2 are collectively referred to as user 100.

携帯端末2は、携帯端末の識別情報と時刻情報に対応づけて、位置情報、加速度情報、姿勢角情報等を、通信網6を介して処理装置1へ送信する。列車30−1は、車両3−1に速度センサ8を備え、車両の識別情報と時刻情報に対応づけて、速度センサ8が計測した車両3−1の走行速度を示す速度情報を通信網6を介して処理装置1へ送信する。なお、携帯端末2と列車30は、上記情報を直接、処理装置1へ送信してもよいし、例えば通信網6に接続されている記憶装置7を介して上記情報を処理装置1へ送信してもよい。通信網6は、移動体通信網、インターネット、構内通信網等を含んで構成され、処理装置1、記憶装置7、携帯端末2、列車30間で所定の情報を送受信する。 The mobile terminal 2 transmits position information, acceleration information, posture angle information, and the like to the processing device 1 via the communication network 6 in association with the identification information and the time information of the mobile terminal. The train 30-1 is provided with a speed sensor 8 in the vehicle 3-1. The speed information indicating the traveling speed of the vehicle 3-1 measured by the speed sensor 8 is transmitted to the communication network 6 in association with the vehicle identification information and the time information. Is transmitted to the processing device 1 via. The mobile terminal 2 and the train 30 may directly transmit the above information to the processing device 1, or transmit the above information to the processing device 1 via, for example, a storage device 7 connected to the communication network 6. You may. The communication network 6 includes a mobile communication network, the Internet, a premises communication network, and the like, and transmits / receives predetermined information between the processing device 1, the storage device 7, the mobile terminal 2, and the train 30.

図2は、図1に示す携帯端末2の構成例を示すブロック図である。図2に示す構成例では、携帯端末2は、コンピュータとその周辺装置等から構成され、コンピュータおよびその周辺装置等のハードウェアと、コンピュータが実行するプログラム等のソフトウェアとの組み合わせで構成される機能的構成要素として、通信部21と、表示入力部22と、時刻取得部23と、位置情報取得部24と、加速度検知部25と、姿勢角検知部26と、点灯状態検知部27と、アプリ実行部28と、記憶部29を備える。 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 mobile terminal 2 is composed of a computer and its peripheral devices and the like, and has a function composed of a combination of hardware such as the computer and its peripheral devices and software such as a program executed by the computer. As target 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. It includes an execution unit 28 and a storage unit 29.

通信部21は、移動体通信網、無線LAN(構内通信網)、近距離通信等の1または複数種類の通信規格に対応する無線通信を行い、例えば処理装置1との間で所定の情報を送受信する。表示入力部22は、液晶表示パネルや有機エレクトロルミネッセンス表示パネルと、タッチセンサの組み合わせから構成され、画像を表示したり、入力操作を受け付けたりする。時刻取得部23は、例えば携帯端末2が有する時計回路から日時を示す情報(時刻情報)を取得する。位置情報取得部24は、衛星測位システム用の受信機等を有し、衛星測位システムを利用して携帯端末2の位置情報を取得する。あるいは、位置情報取得部24は、通信部21を用いて、移動体通信網の基地局から得られる情報や無線LANのアクセスポイントから得られる情報に基づいて携帯端末2の位置情報を取得する。加速度検知部25は、加速度センサを有し、携帯端末2の加速度の3軸成分(加速度情報)を検知する。姿勢角検知部26は、加速度検知部25や、携帯端末2が有するジャイロセンサ、地磁気センサ等を用いて、携帯端末2の姿勢角(本実施形態では鉛直方向からの傾斜角)(姿勢角情報)を検知する。点灯状態検知部27は、表示入力部22の表示が点灯状態なのか消灯状態なのか(画面点灯情報)を検知する。アプリ実行部28は、所定のOS(オペレーティングシステム)上で所定のアプリケーションプログラム等を実行する。記憶部29は、例えば、時刻情報に対応づけて位置情報、加速度情報、姿勢角情報、画面点灯情報等を記憶する。 The communication unit 21 performs wireless communication corresponding to one or a plurality of types of communication standards such as a mobile communication network, a wireless LAN (local area network), and short-range communication, and exchanges predetermined information with, for example, a processing device 1. Send and receive. The display input unit 22 is composed of a combination of a liquid crystal display panel, an organic electroluminescence display panel, and a touch sensor, and displays an image or accepts an input operation. The time acquisition unit 23 acquires information (time information) indicating the date and time from, for example, the clock circuit of the mobile terminal 2. The position information acquisition unit 24 has a receiver or the like for the satellite positioning system, and acquires the position information of the mobile terminal 2 by using the satellite positioning system. Alternatively, the location information acquisition unit 24 uses the communication unit 21 to acquire the location information of the mobile terminal 2 based on the information obtained from the base station of the mobile communication network or the information obtained from the access point of the wireless LAN. The acceleration detection unit 25 has an acceleration sensor and detects a three-axis component (acceleration information) of the acceleration of the mobile terminal 2. The attitude angle detection unit 26 uses the acceleration detection unit 25, the gyro sensor, the geomagnetic sensor, and the like of the mobile terminal 2 to provide the attitude angle (inclination angle from the vertical direction in the present embodiment) (attitude angle information) of the mobile terminal 2. ) Is detected. The lighting state detection unit 27 detects whether the display of the display input unit 22 is in the lighting state or the lighting state (screen lighting information). The application execution 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, and the like in association with time information.

本実施形態において携帯端末2は、例えば列車30の運行情報を取得するためのアプリケーションプログラムがアプリ実行部28によって実行されている場合に、所定の周期で、携帯端末識別情報と時刻情報に対応づけて、位置情報、加速度情報、姿勢角情報および画面点灯情報のうちの、一部または全部を、通信部21から通信網6を介して処理装置1へ送信する。その際、加速度情報は例えば、10ミリ秒毎に加速度検知部25によって検知されて記憶部29に記憶され、位置情報、姿勢角情報および画面点灯情報は10ミリ秒と異なる周期で、位置情報取得部24、姿勢角検知部26および点灯状態検知部27によって取得されて記憶部29に記憶される。 In the present embodiment, the mobile terminal 2 associates the mobile terminal identification information with the time information at a predetermined cycle, for example, when an application program for acquiring operation information of the train 30 is executed by the application execution unit 28. Then, a part or all of the position information, the acceleration information, the attitude angle information, and the screen lighting information is transmitted from the communication unit 21 to the processing device 1 via the communication network 6. At that time, for example, the acceleration information is detected by the acceleration detection unit 25 every 10 milliseconds and stored in the storage unit 29, and the position information, the posture angle information, and the screen lighting information are acquired in a cycle different from 10 milliseconds. It is acquired by the unit 24, the posture angle detecting unit 26, and the lighting state detecting unit 27, and stored in the storage unit 29.

また、携帯端末2は、記憶部29に記憶した各情報を、例えば、A駅5−1からB駅5−2への移動中に所定の時間間隔で随時、通信部21から通信網6を介して処理装置1へ送信したり、あるいはA駅5−1からB駅5−2への移動中に取得した各情報をB駅5−2に到着した後に例えば一括して通信部21から通信網6を介して処理装置1へ送信したりする。なお、携帯端末識別情報は、例えば、加入者番号等の識別情報や、アプリケーションプログラムを用いて処理装置1等にユーザ登録等を行った場合のユーザ識別情報等とすることができる。 Further, the mobile terminal 2 transmits each information stored in the storage unit 29 from the communication unit 21 to the communication network 6 at any time during the movement from the A station 5-1 to the B station 5-2 at predetermined time intervals. After transmitting to the processing device 1 via the processing device 1 or arriving at the B station 5-2 for each information acquired during the movement from the A station 5-1 to the B station 5-2, for example, the communication unit 21 collectively communicates. 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 a user is registered in the processing device 1 or the like using an application program, or the like.

次に、図3を参照して、図1示す処理装置1の構成例について説明する。図3は、図1に示す処理装置1の構成例を示すブロック図である。処理装置1は、サーバ等のコンピュータとその周辺装置等から構成され、コンピュータおよびその周辺装置等のハードウェアと、コンピュータが実行するプログラム等のソフトウェアの組み合わせで構成される機能的構成要素として、処理部11と記憶部12と通信部14を備える。なお、処理装置1は、本発明の加速度推定装置の一構成例である。 Next, a configuration example of the processing device 1 shown in FIG. 1 will be described with reference to FIG. FIG. 3 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, and is processed as a functional component composed of a combination of hardware such as the computer and its peripheral devices and software such as a program executed by the computer. A unit 11, a storage unit 12, and a communication unit 14 are provided. The processing device 1 is a configuration example of the acceleration estimation device of the present invention.

記憶部12は、駅位置情報121、軌道情報122、時刻表情報123、運行情報124、車両−時刻−速度情報125、携帯端末−時刻−位置−加速度−姿勢角−画面点灯情報126、携帯端末−利用車両情報127、および算出結果情報128を記憶する。 The storage unit 12 includes 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 information 126, mobile terminal. -Stores vehicle information 127 and calculation result information 128.

駅位置情報121は、例えば図1に示すA駅5−1、B駅5−2等の駅の位置情報である。軌道情報122は、例えば図1に示すA駅5−1とB駅5−2間の軌道4等の軌道の位置情報、軌道の勾配の情報、軌道のカントの情報、軌道の曲率半径の情報等を含む情報である。時刻表情報123は、列車30−1等の各列車30のA駅5−1、B駅5−2等の各駅での発着予定時刻を示す情報、各列車30の座席に関する情報(指定席の座席の向きや定員数、自由席の座席の向きや定員数、全席指定であるか否か等を示す情報)を含む。運行情報124は、列車30−1等の各列車30のA駅5−1、B駅5−2等の各駅での実際の発着時刻を示す情報を含む。 The station position information 121 is, for example, the position information of stations such as A station 5-1 and B station 5-2 shown in FIG. The track information 122 includes, for example, position information of a track such as track 4 between station A 5-1 and station B 5-2 shown in FIG. 1, information on the slope of the track, information on the cant of the track, and information on the radius of curvature of the track. It is information including. The timetable information 123 includes information indicating scheduled departure and arrival times at each station such as A station 5-1 and B station 5-2 of each train 30 such as train 30-1, and information regarding seats of each train 30 (reserved seats). Includes information indicating the orientation and capacity of seats, the orientation and capacity of unreserved seats, whether or not all seats are designated, etc.). The operation information 124 includes information indicating the actual departure / arrival times at each station such as A station 5-1 and B station 5-2 of each train 30 such as train 30-1.

車両−時刻−速度情報125は、列車30−1等の各列車30の実際の走行速度の時系列データを含む。携帯端末−時刻−位置−加速度−姿勢角−画面点灯情報126は、携帯端末2−1、2−2等の各携帯端末2で計測された時系列の位置情報、加速度情報、姿勢角情報、画面点灯情報等の各情報を、携帯端末識別情報と時刻情報に対応づけた情報を含む。携帯端末−利用車両情報127は、携帯端末2−1、2−2等の各携帯端末2(あるいは各携帯端末2を携帯する各利用者100)の列車30−1等の各列車30の利用履歴を表す情報を含む。そして、算出結果情報128は、処理部11が過去に算出した各種算出結果を表す情報を含む。 The vehicle-time-speed information 125 includes time-series data of the actual traveling speed of each train 30 such as train 30-1. The mobile terminal-time-position-acceleration-attitude angle-screen lighting information 126 is a time-series position information, acceleration information, attitude angle information, etc. measured by each mobile terminal 2 such as mobile terminals 2-1 and 2-2. Each information such as screen lighting information includes information in which mobile terminal identification information and time information are associated with each other. The mobile terminal-used vehicle information 127 is the use of each train 30 such as train 30-1 of each mobile terminal 2 (or each user 100 carrying each mobile terminal 2) such as mobile terminals 2-1 and 2-2. Contains information that represents history. The calculation result information 128 includes information representing various calculation results calculated in the past by the processing unit 11.

通信部14は、例えば処理装置1、記憶装置7、車両3等との間で通信網6を介して所定の情報を送受信する。 The communication unit 14 transmits and receives predetermined information to and from, for example, the processing device 1, the storage device 7, the vehicle 3, and the like via the communication network 6.

処理部11は、機能的構成要素として、データ蓄積部111、データ抽出部112、車両加速度算出部113、加速度成分演算部114、伝達特性算出部115、車両加速度推定部116、対象限定部117および異常検出部118を備える。 As functional components, the processing unit 11 includes a data storage unit 111, a data extraction unit 112, a vehicle acceleration calculation unit 113, an acceleration component calculation unit 114, a transmission characteristic calculation unit 115, a vehicle acceleration estimation unit 116, a target limiting unit 117, and the target limiting unit 117. An abnormality detection unit 118 is provided.

データ蓄積部111は、車両3から受信した速度情報を車両−時刻−速度情報125として記憶部12に記憶したり、携帯端末2から受信した各情報を携帯端末−時刻−位置−加速度−姿勢角−画面点灯情報126として記憶部12に記憶したりする。 The data storage unit 111 stores the speed information received from the vehicle 3 as the vehicle-time-speed information 125 in the storage unit 12, and stores each information received from the mobile terminal 2 in the mobile terminal-time-position-acceleration-attitude angle. -The screen lighting information 126 is stored in the storage unit 12.

データ抽出部112は、処理部11が、軌道4の特定の区間や特定の列車30、特定の車両3について加速推定や異常検出を行う場合に、処理の対象とする情報を記憶部12から抽出する。例えば、処理装置1が、ある日時にA駅5−1からB駅5−2へ運転された列車30−1について、各車両30−1および30−2の異常とA駅5−1からB駅5−2までの軌道4の異常を検出する場合、データ抽出部112は、次の情報を抽出(あるいは特定)する。すなわち、データ抽出部112は、当該列車30−1がA駅5−1からB駅5−2まで走行したときに速度センサ8で計測された時系列の速度情報を、車両−時刻−速度情報125から抽出する。また、データ抽出部112は、当該列車30−1のA駅5−1からB駅5−2までの走行位置と所定の誤差範囲内で位置情報が一致する各携帯端末2について、時系列の位置情報、加速度情報、姿勢角情報、画面点灯情報等の各情報を、携帯端末−時刻−位置−加速度−姿勢角−画面点灯情報126から抽出する。 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 on a specific section of the track 4, a specific train 30, or a specific vehicle 3. To do. For example, regarding the train 30-1 in which the processing device 1 was operated from A station 5-1 to B station 5-2 at a certain date and time, the abnormalities of each vehicle 30-1 and 30-2 and the abnormality from A station 5-1 to B When detecting an abnormality in the track 4 up to the station 5-2, the data extraction unit 112 extracts (or specifies) the following information. That is, the data extraction unit 112 uses the vehicle-time-speed information as the time-series speed information measured by the speed sensor 8 when the train 30-1 travels from station A 5-1 to station B 5-2. Extract from 125. Further, the data extraction unit 112 is a time series for each mobile terminal 2 whose position information matches the traveling position of the train 30-1 from A station 5-1 to B station 5-2 within a predetermined error range. Each information such as position information, acceleration information, attitude angle information, and screen lighting information is extracted from the mobile terminal-time-position-acceleration-attitude angle-screen lighting information 126.

車両加速度算出部113は、データ抽出部112が抽出した各情報に基づいて、車両3の速度を時間微分して車両3の前後方向の加速度を算出する。ここで、図7を参照して、本実施形態における車両3の前後、左右、および上下方向について説明する。図7は、図1に示す処理装置1の処理における車両3の前後、左右、および上下方向の定義を説明するための模式図である。図7(a)に示すように、車両3の床面を基準面3aとして、車両3の進行方向を車両3の前後方向(Xc軸方向)とし、車両3の前後方向に対して基準面3a上で垂直な方向を車両3の左右方向(Yc軸方向)とし、基準面3aに対して上下の方向を車両3の上下方向(Zc軸方向)とする。なお、図7(a)に示すように軌道4が水平である場合、車両3の上下方向(Zc軸方向)は鉛直方向(重力の方向)と一致するが、図7(b)に示すように軌道4が勾配を有する場合や、図7(c)に示すように軌道4がカント(片勾配)を有する場合、車両3の上下方向(Zc軸方向)は、鉛直方向(Zc1軸方向)と定義してもよいし、基準面3aに垂直な方向(Zc2軸方向)と定義してもよい。なお、鉛直方向(Zc1軸方向)の座標と基準面3aに垂直な方向(Zc2軸方向)との座標の対応関係は、軌道情報122が含む軌道の勾配の情報、軌道のカントの情報、軌道の曲率半径の情報と、車両3の速度情報等に基づいて求めることができる。 The vehicle acceleration calculation unit 113 calculates the acceleration in the front-rear direction of the vehicle 3 by time-differentiating the speed of the vehicle 3 based on each information extracted by the data extraction unit 112. Here, with reference to FIG. 7, the front-rear, left-right, and up-down directions of the vehicle 3 in the present embodiment will be described. FIG. 7 is a schematic diagram for explaining definitions in the front-rear, 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. 7A, the floor surface of the vehicle 3 is the reference surface 3a, the traveling direction of the vehicle 3 is the front-rear direction (Xc axis direction) of the vehicle 3, and the reference surface 3a is relative to the front-rear direction of the vehicle 3. The vertical direction is the left-right direction (Yc-axis direction) of the vehicle 3, and the up-down direction with respect to the reference surface 3a is the up-down direction (Zc-axis direction) of the vehicle 3. When the track 4 is horizontal as shown in FIG. 7 (a), the vertical direction (Zc axis direction) of the vehicle 3 coincides with the vertical direction (direction of gravity), but as shown in FIG. 7 (b). When the track 4 has a gradient, or when the track 4 has a cant (one-sided gradient) as shown in FIG. 7 (c), the vertical direction (Zc axis direction) of the vehicle 3 is the vertical direction (Zc1 axis direction). It may be defined as a direction perpendicular to the reference plane 3a (Zc2 axis direction). The correspondence 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) includes the track gradient information included in the track information 122, the track cant information, and the track. It can be obtained based on the information of the radius of curvature of the vehicle 3 and the speed information of the vehicle 3.

車両加速度算出部113は、例えば、図9(a)に示す車両3の速度(Vc−Xc(Xc軸方向の速度))を時間微分して、図9(b)に示す車両3の前後方向(Xc軸方向)の加速度(Ac−Xc)を算出する。なお、図9は、図1に示す処理装置1の動作例を説明するための模式図であり、図9(a)は、A駅5−1からB駅5−2までの区間の車両3の速度(Vc−Xc)の時間変化の例を示す模式図であり、図9(b)は図9(a)に示す速度を時間微分して算出した車両3の前後方向(Xc軸方向)の加速度(Ac−Xc)の時間変化の例を示す模式図である。 For example, the vehicle acceleration calculation unit 113 time-differentiates the speed (Vc-Xc (speed in the Xc axis direction)) of the vehicle 3 shown in FIG. 9A, and the vehicle acceleration calculation unit 113 time-differentiates the speed of the vehicle 3 shown in FIG. The acceleration (Ac-Xc) in the (Xc axis direction) is calculated. Note that FIG. 9 is a schematic diagram for explaining an operation example of the processing device 1 shown in FIG. 1, and FIG. 9A shows a vehicle 3 in a section from A station 5-1 to B station 5-2. 9 (b) is a schematic view showing an example of a time change of the speed (Vc-Xc) of the vehicle 3, and FIG. 9 (b) shows the vehicle 3 in the front-rear direction (Xc axis direction) calculated by time-differentiating the speed shown in FIG. 9 (a). It is a schematic diagram which shows the example of the time change of the acceleration (Ac-Xc) of.

なお、車両加速度算出部113は、車速センサ8が計測した速度の時系列を時間微分して車両3の前後方向の加速度を算出してもよいし、携帯端末2の位置情報の時系列を微分して求めた車両3の速度の時系列をさらに時間微分して車両3の前後方向の加速度を算出してもよい。 The vehicle acceleration calculation unit 113 may calculate the acceleration in the front-rear direction of the vehicle 3 by time-differentiating the time series of the speed measured by the vehicle speed sensor 8, or differentiates the time series of the position information of the mobile terminal 2. The time series of the speed of the vehicle 3 thus obtained may be further time-differentiated to calculate the acceleration in the front-rear direction of the vehicle 3.

図3に示す加速度成分演算部114は、車両3で移動中の携帯端末2で計測された加速度の3軸成分に基づき、携帯端末2の加速度の車両3の前後方向(Xc軸方向)の成分を求める。その際、加速度成分演算部114は、例えば、車両3で移動中の携帯端末2で計測された加速度の3軸成分に基づき、車両加速度算出部113が算出した車両3の前後方向の加速度との相関係数が比較的高い成分(あるいは相関係数が所定の閾値より高い成分)を、携帯端末2の加速度の車両3の前後方向の成分とすることができる。また、加速度成分演算部114は、例えば、車両3で移動中の携帯端末2で計測された加速度の3軸成分に基づき、携帯端末2の姿勢角情報に基づいて携帯端末2の加速度の車両3の上下方向の成分を求め、携帯端末2の加速度の車両3の上下方向の成分と垂直で、車両加速度算出部113が算出した車両3の前後方向の加速度との相関係数が比較的高い成分(あるいは相関係数が所定の閾値より高い成分)を、携帯端末2の加速度の車両3の前後方向の成分とする。 The acceleration component calculation unit 114 shown in FIG. 3 is based on the three-axis component of the acceleration measured by the mobile terminal 2 moving in the vehicle 3, and the component of the acceleration of the mobile terminal 2 in the front-rear direction (Xc-axis direction) of the vehicle 3. Ask for. At that time, the acceleration component calculation unit 114 is, for example, the acceleration in the front-rear direction of the vehicle 3 calculated by the vehicle acceleration calculation unit 113 based on the three-axis component of the acceleration measured by the mobile terminal 2 moving in the vehicle 3. A component having a relatively high correlation coefficient (or a component having a correlation coefficient higher than a predetermined threshold value) can be a component in the front-rear direction of the vehicle 3 of the acceleration of the mobile terminal 2. Further, the acceleration component calculation unit 114 is, for example, based on the three-axis component of the acceleration measured by the mobile terminal 2 moving in the vehicle 3, and the vehicle 3 of the acceleration of the mobile terminal 2 based on the attitude angle information of the mobile terminal 2. A component that 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 front-rear acceleration of the vehicle 3 calculated by the vehicle acceleration calculation unit 113. (Or a component whose correlation coefficient is higher than a predetermined threshold value) is a component of the acceleration of the mobile terminal 2 in the front-rear direction of the vehicle 3.

図8〜図10を参照して、加速度成分演算部114の動作例について説明する。図8〜図10は、図1に示す処理装置1の動作例を説明するための模式図である。図8(a)は、本実施形態において図2に示す加速度検知部25が検知する加速度の3軸方向の例を示す模式図である。図8(a)に示す例において、加速度検知部25が検知する加速度の3軸方向は、図2に示す表示入力部22の表示画面22aに垂直なzs軸方向と、表示画面22aの縦方向(長手方向)のxs軸方向と、表示画面22aの横方向のys軸方向である。この場合、図2に示す加速度検知部25は、例えば、図8(b)に示すように、携帯端末2の加速度Asを、xs軸方向の成分As−xsと、ys軸方向の成分As−ysと、zs軸方向の成分As−zsとで検知する。図8(a)は、利用者100がある姿勢角で携帯端末2を持っている状態を示す。 An operation example of the acceleration component calculation unit 114 will be described with reference to FIGS. 8 to 10. 8 to 10 are schematic views for explaining an operation example of the processing device 1 shown in FIG. FIG. 8A is a schematic view showing an example of the acceleration detected by the acceleration detection unit 25 shown in FIG. 2 in the three axial directions in the present embodiment. In the example shown in FIG. 8A, the three-axis directions of the 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. 2 and the vertical direction of the display screen 22a. The (longitudinal direction) xs axis direction and the horizontal ys axis direction of the display screen 22a. In this case, the acceleration detection unit 25 shown in FIG. 2 uses, for example, the acceleration As of the mobile terminal 2 with the component As−xs in the xs axis direction and the component As− in the ys axis direction, as shown in FIG. 8 (b). It is detected by ys and the component As−zs in the zs axis direction. FIG. 8A shows a state in which the user 100 holds the mobile terminal 2 at a certain posture angle.

図8(c)に示すように、加速度成分演算部114は、携帯端末2が検知した加速度Asの3軸成分(As−xs、As−ysと、As−zs)から、携帯端末2の加速度Asの車両3の前後方向(Xc軸方向)の成分As−Xcを求めることを目的とする。図8(c)は、携帯端末2が検知した加速度Asを、車両3の前後方向(Xc軸方向)の成分As−Xcと、車両3の左右方向(Yc軸方向)の成分As−Ycと、車両3の上下方向(Zc軸方向)の成分As−Zcで表した例を示す。図8(b)に示す姿勢角が分かる場合、加速度成分演算部114は、加速度Asの3軸成分(As−xs、As−ysと、As−zs)から、図8(c)に示す車両3の上下方向(Zc軸方向)の成分As−Zcを一意に算出することができる。ただし、姿勢角が分かる場合でも、車両3の前後方向(Xc軸方向)の成分As−Xcと車両3の左右方向(Yc軸方向)の成分As−Ycは、上下方向(Zc軸方向)に垂直な平面に沿った方向の成分であって、互いに垂直な方向の成分であるということが分かるだけ、方向は一意に決まらない。 As shown in FIG. 8C, the acceleration component calculation unit 114 uses the three-axis components (As-xs, As-ys, and As-zz) of the acceleration As detected by the mobile terminal 2 to accelerate the acceleration of the mobile terminal 2. It is an object of the present invention to obtain the component As-Xc in the front-rear direction (Xc axis direction) of the vehicle 3 of As. FIG. 8C shows the acceleration As detected by the mobile terminal 2 as a component As-Xc in the front-rear direction (Xc axis direction) of the vehicle 3 and a component As-Yc in the left-right 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 is shown. When the attitude angle shown in FIG. 8B is known, the acceleration component calculation unit 114 uses the three-axis components of acceleration As (As-xs, As-ys, and As-zz) to indicate the vehicle shown in FIG. 8 (c). The component As-Zc in the vertical direction (Zc axis direction) of 3 can be uniquely calculated. However, even when the attitude angle is known, the component As-Xc in the front-rear direction (Xc axis direction) of the vehicle 3 and the component As-Yc in the left-right direction (Yc axis direction) of the vehicle 3 are in the vertical direction (Zc axis direction). The direction is not uniquely determined only by knowing that the components are in the direction along the vertical plane and are the components in the direction perpendicular to each other.

そこで、加速度成分演算部114は、例えば、携帯端末2の加速度Asの車両3の上下方向(Zc軸方向)の成分As−Zcと垂直で、車両加速度算出部113が算出した車両3の前後方向(Xc軸方向)の加速度Ac−Xcとの相関係数が比較的高い成分(あるいは相関係数が所定の閾値より高い成分)を、携帯端末2の加速度の車両3の前後方向(Xc軸方向)の成分As−Xcとする。例えば、加速度成分演算部114は、携帯端末2で計測された加速度の3軸成分に基づき、携帯端末2の姿勢角情報に基づいて携帯端末2の加速度の車両3の上下方向の成分As−Zcを求め、携帯端末2の加速度の車両3の上下方向の成分As−Zcと垂直で、車両加速度算出部113が算出した車両3の前後方向の加速度Ac−Xcとの相関係数が比較的高い成分(あるいは相関係数が所定の閾値より高い成分)を、携帯端末2の加速度の車両3の前後方向の成分As−Xcとする。 Therefore, for example, the acceleration component calculation unit 114 is perpendicular to the component As—Zc in the vertical direction (Zc axis direction) of the vehicle 3 of the acceleration As of the mobile terminal 2, and the front-rear direction of the vehicle 3 calculated by the vehicle acceleration calculation unit 113. A component having a relatively high correlation coefficient with the acceleration Ac-Xc in the (Xc axis direction) (or a component having a correlation coefficient higher than a predetermined threshold value) is set in the front-rear direction (Xc axis direction) of the vehicle 3 with the acceleration of the mobile terminal 2. ) Component As-Xc. For example, the acceleration component calculation unit 114 uses the three-axis component of the acceleration measured by the mobile terminal 2 and the vertical component As-Zc of the acceleration of the mobile terminal 2 based on the attitude angle information of 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 acceleration Ac-Xc of the vehicle 3 in the front-rear direction calculated by the vehicle acceleration calculation unit 113 is relatively high. A component (or a component having a correlation coefficient higher than a predetermined threshold value) is defined as a component As-Xc in the front-rear direction of the vehicle 3 with acceleration of the mobile terminal 2.

加速度成分演算部114は、例えば、図8(d)に示すように、車両3の上下方向(Zc軸方向)と垂直な平面Sxy上に仮のX軸Xc1とY軸Yc1を定義する。そして、加速度成分演算部114は、携帯端末2の加速度Asの車両3の上下方向(Zc軸方向)の成分As−Zcを基準として、加速度AsのXc1軸方向の成分As−Xc1と、加速度AsのYc1軸方向の成分As−Yc1を算出する。そして、加速度成分演算部114は、車両加速度算出部113が算出した車両3の前後方向の加速度Ac−Xcと携帯端末2の加速度AsのXc1軸方向の成分As−Xc1の相関係数を算出する。すなわち、加速度成分演算部114は、例えば、図10(a)に示すような車両3の前後方向の加速度Ac−Xcの時間変化と、図10(b)に示すような携帯端末2の加速度AsのXc1軸方向の成分As−Xc1の時間変化との時刻毎の図10(d)に示すような対応関係から、車両3の前後方向の加速度Ac−Xcと携帯端末2の加速度AsのXc1軸方向の成分As−Xc1の相関係数を算出する。相関係数は、例えば、二つの変量の共分散を各変量の各標準偏差の積で割った値で求められ、一般に1または−1に近ければ強い相関があり、0に近ければほとんど相関がないことを表す。 For example, as shown in FIG. 8D, the acceleration component calculation unit 114 defines a temporary 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 acceleration component calculation unit 114 uses the component As-Zc of the acceleration As of the mobile terminal 2 in the vertical direction (Zc axis direction) of the vehicle 3 as a reference, and the component As-Xc1 of the acceleration As in the Xc1 axial direction and the acceleration As. The component As-Yc1 in the Yc1 axial direction of is calculated. Then, the acceleration component calculation unit 114 calculates the correlation coefficient between the acceleration Ac-Xc in the front-rear direction of the vehicle 3 calculated by the vehicle acceleration calculation unit 113 and the component As-Xc1 in the Xc1 axial direction of the acceleration As of the mobile terminal 2. .. That is, the acceleration component calculation unit 114 has, for example, the time change of the acceleration Ac-Xc in the front-rear direction of the vehicle 3 as shown in FIG. 10A and the acceleration As of the mobile terminal 2 as shown in FIG. 10B. Xc1 axis of the acceleration Ac-Xc in the front-rear direction of the vehicle 3 and the acceleration As of the mobile terminal 2 from the correspondence relationship with the time change of the component As-Xc1 in the Xc1 axis direction for each time as shown in FIG. The correlation coefficient of the component As-Xc1 in the direction 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. Generally, if it is close to 1 or -1, there is a strong correlation, and if it is close to 0, there is almost no correlation. Indicates that there is no such thing.

次に、加速度成分演算部114は、図8(d)に示すように、平面Sxy上でX軸Xc1とY軸Yc1を所定角度分回転させた新たな仮のX軸Xc2とY軸Yc2を定義し、携帯端末2の加速度Asの車両3の上下方向(Zc軸方向)の成分As−Zcを基準として、加速度AsのXc2軸方向の成分As−Xc2と、加速度AsのYc2軸方向の成分As−Yc2を算出する。そして、加速度成分演算部114は、例えば、図10(a)に示すような車両3の前後方向の加速度Ac−Xcの時間変化と、図10(c)に示すような携帯端末2の加速度AsのXc2軸方向の成分As−Xc2の時間変化との時刻毎の図10(e)に示すような対応関係から、車両3の前後方向の加速度Ac−Xcと携帯端末2の加速度AsのXc2軸方向の成分As−Xc2の相関係数を算出する。 Next, as shown in FIG. 8D, the acceleration component calculation unit 114 creates new temporary X-axis Xc2 and Y-axis Yc2 obtained by rotating the X-axis Xc1 and the Y-axis Yc1 by a predetermined angle on the plane Sxy. Defined, based on the component As-Zc in the vertical direction (Zc axis direction) of the vehicle 3 of the acceleration As of the mobile terminal 2, the component As-Xc2 in the Xc2 axis direction of the acceleration As and the component in the Yc2 axis direction of the acceleration As. As-Yc2 is calculated. Then, the acceleration component calculation unit 114 has, for example, the time change of the acceleration Ac-Xc in the front-rear direction of the vehicle 3 as shown in FIG. 10 (a) and the acceleration As of the mobile terminal 2 as shown in FIG. 10 (c). From the correspondence relationship with the time change of the component As-Xc2 in the Xc2 axis direction for each time as shown in FIG. 10 (e), the acceleration Ac-Xc in the front-rear direction of the vehicle 3 and the Xc2 axis of the acceleration As of the mobile terminal 2 The correlation coefficient of the component As-Xc2 in the direction is calculated.

そして、加速度成分演算部114は、例えば、仮のX軸とY軸を90度分所定角度毎に回転させて、車両3の前後方向の加速度Ac−Xcと複数の携帯端末2の加速度Asの仮のX軸方向の成分との相関係数を求めて互いに比較し、相関係数が比較的高い成分を、携帯端末2の加速度の車両3の前後方向の成分とする。あるいは、加速度成分演算部114は、例えば、仮のX軸とY軸を回転させながら、車両3の前後方向の加速度Ac−Xcと、携帯端末2の加速度Asの仮のX軸方向の成分との相関係数を求めて、所定の閾値と比較し、相関係数が所定の閾値より高い成分を、携帯端末2の加速度の車両3の前後方向の成分とする。例えば、図10に示す例で、加速度成分演算部114は、車両3の前後方向の加速度Ac−Xcと携帯端末2の加速度AsのXc1軸方向の成分As−Xc1との相関係数が、Xc2軸方向の成分As−Xc2等の他の成分との相関係数より高ければ(1または−1により近ければ)、成分As−Xc1を携帯端末2の加速度の車両3の前後方向(Xc軸方向)の成分As−Xcとする。あるいは、加速度成分演算部114は、車両3の前後方向の加速度Ac−Xcと携帯端末2の加速度AsのXc1軸方向の成分As−Xc1の相関係数の絶対値が所定の閾値より高ければ、成分As−Xc1を携帯端末2の加速度の車両3の前後方向(Xc軸方向)の成分As−Xcとする。なお、この場合、成分As−Yc1が、携帯端末2の加速度の車両3の左右方向(Yc軸方向)の成分As−Ycとなる。 Then, for example, the acceleration component calculation unit 114 rotates the temporary X-axis and the Y-axis by 90 degrees at predetermined angles, and causes acceleration Ac-Xc in the front-rear direction of the vehicle 3 and acceleration As of the plurality of mobile terminals 2. The correlation coefficient with the temporary component in the X-axis direction is obtained and compared with each other, and the component having a relatively high correlation coefficient is defined as the component in the front-rear direction of the vehicle 3 of the acceleration of the mobile terminal 2. Alternatively, the acceleration component calculation unit 114 can, for example, rotate the temporary X-axis and the Y-axis while rotating the acceleration Ac-Xc in the front-rear direction of the vehicle 3 and the temporary X-axis direction component of the acceleration As of the mobile terminal 2. The correlation coefficient of the above is obtained and compared with a predetermined threshold value, and a component having a correlation coefficient higher than the predetermined threshold value is set as a component in the front-rear direction of the vehicle 3 of the acceleration of the mobile terminal 2. For example, in the example shown in FIG. 10, in the acceleration component calculation unit 114, the correlation coefficient between the acceleration Ac-Xc in the front-rear direction of the vehicle 3 and the component As-Xc1 in the Xc1 axial direction of the acceleration As of the mobile terminal 2 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), the component As-Xc1 is set in the front-rear direction (Xc-axis direction) of the vehicle 3 with the acceleration of the mobile terminal 2. ) Component As-Xc. Alternatively, if the acceleration component calculation unit 114 has an absolute value of the correlation coefficient between the acceleration Ac-Xc in the front-rear direction of the vehicle 3 and the component As-Xc1 in the Xc1 axial direction of the acceleration As of the mobile terminal 2, the absolute value is higher than a predetermined threshold value. Let the component As-Xc1 be the component As-Xc in the front-rear direction (Xc axis direction) of the vehicle 3 having the acceleration of the mobile terminal 2. In this case, the component As-Yc1 becomes the component As-Yc in the left-right direction (Yc axis direction) of the vehicle 3 with the acceleration of the mobile terminal 2.

なお、加速度成分演算部114による、車両3で移動中の携帯端末2で計測された加速度の3軸成分に基づく、携帯端末2の加速度の車両3の前後方向(Xc軸方向)の成分の求め方は、上記に限定されない。例えば、列車30が全席指定である場合、携帯端末2が使用されているとき、携帯端末2の向きは座席の向きに対応していると推定される。この場合、加速度成分演算部114は、例えば、画面点灯情報に基づき、画面が点灯している携帯端末2については、姿勢角情報に基づいて、図8(b)に示す携帯端末2の加速度Asのxs軸方向の成分As−xsとys軸方向の成分As−ysとzs軸方向の成分As−zsを、幾何学的に、図8(c)に示す携帯端末2の加速度の車両3の前後方向(Xc軸方向)の成分As−Xcと左右方向(Yc軸方向)の成分As−Ycと上下方向(Zc軸方向)の成分As−Zcに変換することができる。 The acceleration component calculation unit 114 determines the component of the acceleration of the mobile terminal 2 in the front-rear direction (Xc-axis direction) of the vehicle 3 based on the three-axis component of the acceleration measured by the mobile terminal 2 moving in the vehicle 3. The person is not limited to the above. For example, when the train 30 is designated for all seats, it is estimated that the orientation of the mobile terminal 2 corresponds to the orientation of the seats when the mobile terminal 2 is used. In this case, the acceleration component calculation unit 114, for example, based on the screen lighting information, for the mobile terminal 2 whose screen is lit, the acceleration As of the mobile terminal 2 shown in FIG. 8B based on the attitude angle information. The component As-xs in the xs-axis direction and the component As-ys in the ys-axis direction and the component As-zz in the zs-axis direction are geometrically obtained from the vehicle 3 having the acceleration of the mobile terminal 2 shown in FIG. It can be converted into a component As-Xc in the front-back direction (Xc-axis direction), a component As-Yc in the left-right direction (Yc-axis direction), and a component As-Zc in the up-down direction (Zc-axis direction).

すなわち、本実施形態では、携帯端末2から出力される3方向の加速度のうち、どの成分が車両3の前後方向加速度を示すかを判定する方法として、例えば、車両3の前後方向加速度との相関係数が高い(波形の形状が近い)成分を車両の前後方向加速度として選定してもよい。あるいは、例えば座席の状態や画面点灯情報等に基づく携帯端末2の使用状況によっては、相関係数によらず、幾何学的に携帯端末2の向きを推定してもよい。 That is, in the present embodiment, as a method of determining which component of the accelerations in the three directions output from the mobile terminal 2 indicates the front-rear acceleration of the vehicle 3, for example, the phase with the front-rear acceleration of the vehicle 3. A component having a high number of relationships (similar in waveform shape) may be selected as the vehicle's longitudinal acceleration. Alternatively, the orientation of the mobile terminal 2 may be geometrically estimated regardless of the correlation coefficient, for example, depending on the usage status of the mobile terminal 2 based on the seat condition, screen lighting information, and the like.

また、図3に示す伝達特性算出部115は、加速度成分演算部114が求めた携帯端末2の加速度の車両3の前後方向(Xc軸方向)の成分As−Xcと車両加速度算出部113が算出した車両3の前後方向(Xc軸方向)の加速度Ac−Xcとの間の伝達特性を算出する。伝達特性算出部115は、算出した伝達特性を、例えば利用者100(携帯端末2)と列車30とに対応づけて、算出結果情報128として記憶部12に記憶する。伝達特性は、制御要素や制御系の入力信号と出力信号の関係を表わす特性であり、例えば、時間領域での伝達特性を表す伝達関数や、周波数領域での伝達特性を表す周波数伝達関数によって表わすことができる。なお、本実施形態において、携帯端末2は、利用者100に所持されている。そのため、車両3と携帯端末2間の加速度の伝達特性は、利用者100の体格、体力や姿勢(座位なのか立位なのか、手摺りやつり革につかまっているのかいないのか、進行方向に対してどちらの方向を向いているのか等)、携帯端末2の所持の状態(手で持っているのか、カバンや衣服のポケット等に入れているのか等)等によって変化する。そのため、伝達特性は、利用者100毎に異なる。また、伝達特性は、同一の利用者100であっても、状況によって異なる。ただし、伝達特性は、時間的に近接している場合には、一定であるとしてもよい場合がある。なお、以下では、この伝達関数を、車両〜人〜携帯端末の伝達関数ともいう。 Further, the transmission characteristic calculation unit 115 shown in FIG. 3 is calculated by the component As-Xc of the acceleration of the mobile terminal 2 obtained by the acceleration component calculation unit 114 in the front-rear direction (Xc axis direction) of the vehicle 3 and the vehicle acceleration calculation unit 113. The transmission characteristic between the acceleration Ac-Xc in the front-rear direction (Xc-axis direction) of the vehicle 3 is calculated. The transmission characteristic calculation unit 115 stores the calculated transmission characteristic as calculation result information 128 in the storage unit 12 in association with, for example, the user 100 (mobile terminal 2) and the train 30. The transfer characteristic is a characteristic that represents the relationship between the input signal and the output signal of the control element or control system. For example, it is represented by a transfer function that represents the transfer characteristic in the time domain or a frequency transfer function that represents the transfer characteristic in the frequency domain. be able to. In this embodiment, the mobile terminal 2 is possessed by the user 100. Therefore, the transmission characteristics of the acceleration between the vehicle 3 and the mobile terminal 2 are based on the physique, physical strength, and posture of the user 100 (whether they are sitting or standing, whether they are held by the handrail or strap, or the direction of travel. It changes depending on which direction it is facing, etc.), the state of possession of the mobile terminal 2 (whether it is held by hand, whether it is in a bag, a pocket of clothes, etc.), and the like. Therefore, the transmission characteristics are different for each user 100. Further, the transmission characteristics differ depending on the situation even for the same user 100. However, the transfer characteristics may be constant when they are close in time. In the following, this transfer function will also be referred to as a transfer function of a vehicle, a person, and a mobile terminal.

伝達特性算出部115は、車両〜人〜携帯端末の伝達関数を次の式で算出する。 The transfer characteristic calculation unit 115 calculates the transfer function of the vehicle-person-mobile terminal by the following formula.

(車両〜人〜携帯端末の伝達関数)=(車両速度から算出した車両前後方向の加速度の周波数特性)/(携帯端末から出力された車両前後方向の加速度の周波数特性) (Transfer function of vehicle-person-mobile terminal) = (frequency characteristic of acceleration in the vehicle front-rear direction calculated from vehicle speed) / (frequency characteristic of acceleration in the vehicle front-rear direction output from the mobile terminal)

伝達特性算出部115は、例えば、図9(a)に示すA駅5−1からB駅5−2までの車両3の速度Vc−Xcから算出された車両3の前後方向(Xc軸方向)の加速度Ac−Xc(図9(b))の周波数特性(図9(d))と、A駅5−1からB駅5−2までの携帯端末2の車両3の前後方向(Xc軸方向)の加速度As−Xc(図9(c))の周波数特性(図9(e))とに基づいて、車両3の前後方向(Xc軸方向)の車両〜人〜携帯端末の伝達関数T−Xc(図9(f))を算出する。 The transmission characteristic calculation unit 115 is, for example, the front-rear direction (Xc axis direction) of the vehicle 3 calculated from the speed Vc-Xc of the vehicle 3 from A station 5-1 to B station 5-2 shown in FIG. 9A. Acceleration Ac-Xc (FIG. 9 (b)) frequency characteristics (FIG. 9 (d)) and the front-rear direction (Xc axis direction) of the vehicle 3 of the mobile terminal 2 from A station 5-1 to B station 5-2. ) Acceleration As-Xc (FIG. 9 (c)) based on the frequency characteristics (FIG. 9 (e)) of the vehicle 3 in the front-rear direction (Xc axis direction) vehicle-person-portable terminal transmission function T- Xc (FIG. 9 (f)) is calculated.

なお、図9(c)は、図9(a)および(b)と共通の時間軸で、携帯端末2の加速度Asの車両3の前後方向(Xc軸方向)の加速度成分As−Xcの時間変化を模式的に示す。なお、図9(c)、(e)、(f)において、実線は図1に示す利用者100−1が所持する携帯端末2−1の加速度または伝達関数を示し、破線は図1に示す利用者100−2が所持する携帯端末2−2の加速度または伝達関数を示す。図9(d)は、横軸を周波数軸として、車両3の前後方向(Xc軸方向)の加速度Ac−Xcの周波数特性を模式的に示す。図9(e)は、横軸を周波数軸として、携帯端末2の車両3の前後方向(Xc軸方向)の加速度成分As−Xcの周波数特性を模式的に示す。また、図9(f)は、横軸を周波数軸として、車両3の前後方向(Xc軸方向)の車両〜人〜携帯端末の伝達関数T−Xc(図9(f))を模式的に示す。 Note that FIG. 9C shows the time of the acceleration component As-Xc in the front-rear direction (Xc-axis direction) of the vehicle 3 of the acceleration As of the mobile terminal 2 on the time axis common to those of FIGS. 9 (a) and 9 (b). The changes are shown schematically. In FIGS. 9 (c), 9 (e), and (f), the solid line shows the acceleration or transfer function of the mobile terminal 2-1 possessed by the user 100-1 shown in FIG. 1, and the broken line is shown in FIG. The acceleration or transfer function of the mobile terminal 2-2 possessed by the user 100-2 is shown. FIG. 9D schematically shows the frequency characteristics of the acceleration Ac-Xc in the front-rear direction (Xc-axis direction) of the vehicle 3 with the horizontal axis as the frequency axis. FIG. 9E schematically shows the frequency characteristics of the acceleration component As—Xc in the front-rear direction (Xc-axis direction) of the vehicle 3 of the mobile terminal 2 with the horizontal axis as the frequency axis. Further, FIG. 9 (f) schematically shows the transfer function TXc (FIG. 9 (f)) of the vehicle-person-mobile terminal in the front-rear direction (Xc-axis direction) of the vehicle 3 with the horizontal axis as the frequency axis. Shown.

なお、伝達特性算出部115は、例えば、始発駅から乗車した利用者(人)100の携帯端末2の群と、途中駅から乗車した利用者(人)100の携帯端末2の群とに分けて、群毎に伝達特性を統計的に算出してもよい。この場合、始発駅から乗車した利用者100は姿勢が座位である場合が多く、当該各利用者100間で各伝達関数が一定の相関関係を有していると考えられ、例えば座位の群の伝達関数を利用者100毎の各伝達関数の平均値から求めることができる。また、途中駅から乗車した利用者100は姿勢が立位である場合が多く、当該各利用者100間で各伝達関数が一定の相関関係を有していると考えられ、例えば立位の群の伝達関数を利用者100毎の各伝達関数の平均値から求めることができる。すなわち、1台の携帯端末2のみではなく、複数のデータを利用することによって例えば立位/座位で異なる車両〜人〜携帯端末の伝達関数を、乗客個人ではなく、始発から乗る人は座位、車両が混雑している状態で途中駅から乗る人は立位である可能性が高いとして、それぞれの伝達関数を算出することができる。また、それぞれをグループ化した伝達関数とすることができる。 The transmission characteristic calculation unit 115 is divided into, for example, a group of mobile terminals 2 of 100 users (people) who boarded from the first station and a group of mobile terminals 2 of 100 users (people) who boarded from an intermediate station. The transmission characteristics may be calculated statistically for each group. In this case, the user 100 who boarded from the first train station is often in the sitting position, and it is considered that each transfer function has a certain correlation among the users 100, for example, in the sitting position group. The transfer function can be obtained from the average value of each transfer function for each user 100. In addition, the user 100 who boarded from the station on the way is often in a standing position, and it is considered that each transfer function has a certain correlation among the users 100, for example, a group of standing positions. The transfer function of can be obtained from the average value of each transfer function for each user 100. That is, by using not only one mobile terminal 2 but also a plurality of data, for example, the transfer function of the vehicle-person-mobile terminal, which differs depending on the standing / sitting position, is transferred from the first train to the sitting position, not the individual passenger. It is possible to calculate each transfer function, assuming that a person who gets on from a station on the way in a crowded vehicle is likely to be standing. In addition, each can be a grouped transfer function.

また、伝達特性算出部115は、後述するように対象限定部117が限定した同一の携帯端末2(あるいは利用者100)で過去に算出された伝達特性の複数の値を用いて、伝達特性を統計的に算出してもよい。 Further, the transmission characteristic calculation unit 115 uses a plurality of values of the transmission characteristics calculated in the past by the same mobile terminal 2 (or the user 100) limited by the target limitation unit 117 as described later to determine the transmission characteristics. It may be calculated statistically.

また、図3に示す車両加速度推定部116は、伝達特性算出部115が算出した伝達特性(車両3の前後方向(Xc軸方向)の車両〜人〜携帯端末の伝達関数)を用いて、携帯端末2で計測された加速度Asの3軸成分に基づき、車両3の左右方向(Yc軸方向)の加速度Ac−Ycまたは車両3の上下方向(Zc軸方向)の加速度Ac−Zcの少なくとも一方を推定する。車両加速度推定部116は、次式によって、車両3の左右方向(Yc軸方向)の加速度Ac−Ycと上下方向(Zc軸方向)の加速度Ac−Zcを求めることができる。 Further, the vehicle acceleration estimation unit 116 shown in FIG. 3 is carried by using the transmission characteristics calculated by the transmission characteristic calculation unit 115 (transmission function of the vehicle-person-portable terminal in the front-rear direction (Xc-axis direction) of the vehicle 3). Based on the three-axis component of the acceleration As measured by the terminal 2, at least one of the acceleration Ac-Yc in the left-right direction (Yc-axis direction) of the vehicle 3 and the acceleration Ac-Zc in the vertical direction (Zc-axis direction) of the vehicle 3 presume. The vehicle acceleration estimation unit 116 can obtain the acceleration Ac-Yc in the left-right direction (Yc axis direction) and the acceleration Ac-Zc in the vertical direction (Zc axis direction) of the vehicle 3 by the following equation.

車両3の左右方向(Yc軸方向)の加速度Ac−Yc=(車両〜人〜携帯端末の伝達関数)×(携帯端末2から出力された車両左右方向の加速度As−Yc) Acceleration Ac-Yc in the left-right direction (Yc axis direction) of the vehicle 3 = (transfer function of vehicle-person-mobile terminal) x (acceleration As-Yc in the vehicle left-right direction output from the mobile terminal 2)

車両3の上下方向(Zc軸方向)の加速度Ac−Zc=(車両〜人〜携帯端末の伝達関数)×(携帯端末2から出力された車両上下方向の加速度As−Zc) Vertical (Zc-axis direction) acceleration Ac-Zc of vehicle 3 = (transfer function of vehicle-person-mobile terminal) x (acceleration As-Zc of vehicle vertical direction output from mobile terminal 2)

なお、携帯端末2から出力された車両左右方向の加速度As−Ycと、携帯端末2から出力された車両上下方向の加速度As−Zcは、例えば、加速度成分演算部114によって、上述したようにして、携帯端末2の加速度の車両3の前後方向(Xc軸方向)の成分As−Xcを求める際に算出される。 The acceleration As-Yc in the vehicle left-right direction output from the mobile terminal 2 and the acceleration As-Zc in the vehicle vertical direction output from the mobile terminal 2 are, for example, as described above by the acceleration component calculation unit 114. , Calculated when the component As-Xc in the front-rear direction (Xc axis direction) of the vehicle 3 of the acceleration of the mobile terminal 2 is obtained.

車両加速度推定部116は、例えば、図11(a)に示す利用者100毎の車両3の左右方向の加速度As−Ycに対し、利用者100毎の伝達関数を乗じて、利用者100毎に車両3の左右方向の加速度Ac−Ycを推定し、例えば全利用者100で平均化して図11(c)に示す車両3の左右方向の加速度Ac−Ycを推定する。また、車両加速度推定部116は、例えば、図11(b)に示す利用者100毎の車両3の上下方向の加速度As−Zcに対し、利用者100毎の伝達関数を乗じて、利用者100毎に車両3の上下方向の加速度Ac−Zcを推定し、例えば全利用者100で平均化して図11(d)に示す車両3の上下方向の加速度Ac−Zcを推定する。 For example, the vehicle acceleration estimation unit 116 multiplies the left-right acceleration As-Yc of the vehicle 3 for each user 100 shown in FIG. 11A by a transmission function for each user 100, and for each user 100. The left-right acceleration Ac-Yc of the vehicle 3 is estimated, and for example, the left-right acceleration Ac-Yc of the vehicle 3 shown in FIG. 11 (c) is estimated by averaging all 100 users. Further, the vehicle acceleration estimation unit 116 multiplies the vertical acceleration As-Zc of the vehicle 3 for each user 100 shown in FIG. 11B by the transmission function for each user 100, for example, to multiply the user 100 by the transmission function for each user 100. The vertical acceleration Ac-Zc of the vehicle 3 is estimated for each time, and for example, the vertical acceleration Ac-Zc of the vehicle 3 shown in FIG. 11D is estimated by averaging all 100 users.

なお、図11(a)は、携帯端末2の加速度Asの車両3の左右方向(Yc軸方向)の加速度成分As−Ycの時間変化を模式的に示す。図11(b)は、携帯端末2の加速度Asの車両3の上下方向(Zc軸方向)の加速度成分As−Zcの時間変化を模式的に示す。図11(c)は、車両3の加速度Acの車両3の左右方向(Yc軸方向)の加速度Ac−Ycの時間変化を模式的に示す。図11(d)は、車両3の加速度Acの車両3の上下方向(Zc軸方向)の加速度Ac−Zcの時間変化を模式的に示す。なお、図9(a)および(b)において、実線は図1に示す利用者100−1が所持する携帯端末2−1の加速度を示し、破線は図1に示す利用者100−2が所持する携帯端末2−2の加速度を示す。 Note that FIG. 11A schematically shows the time change of the acceleration component As—Yc of the acceleration As of the mobile terminal 2 in the left-right direction (Yc axis direction) of the vehicle 3. FIG. 11B schematically shows the time change of the acceleration component As—Zc of the acceleration As of the mobile terminal 2 in the vertical direction (Zc axis direction) of the vehicle 3. FIG. 11C schematically shows the time change of the acceleration Ac-Yc of the acceleration Ac of the vehicle 3 in the left-right direction (Yc axis direction) of the vehicle 3. FIG. 11D schematically shows the time change of the acceleration Ac of the vehicle 3 in the vertical direction (Zc axis direction) of the vehicle 3 in the acceleration Ac−Zc. In FIGS. 9A and 9B, the solid line indicates the acceleration of the mobile terminal 2-1 possessed by the user 100-1 shown in FIG. 1, and the broken line indicates the acceleration possessed by the user 100-2 shown in FIG. The acceleration of the mobile terminal 2-2 is shown.

また、図3に示す対象限定部117は、加速度の3軸成分を計測した携帯端末2を、所定期間に所定回数以上、同一の列車30(あるいは同一の車両3)を利用した利用者100の携帯端末2に限定する。例えば、対象限定部117によって、週にある決められた閾値の回数以上、同じ路線の車両に乗車する乗客等、対象とする軌道系交通に乗る頻度が高い乗客に対象を限定し、伝達特性算出部115によって乗客毎に伝達特性を平均化する等、伝達特性を統計的に算出することで、伝達特性の算出精度を高めることができる。 Further, the target limiting unit 117 shown in FIG. 3 is a user 100 who has used the same train 30 (or the same vehicle 3) for a predetermined number of times or more in a predetermined period of time by using the mobile terminal 2 for measuring the three-axis component of acceleration. Limited to mobile terminal 2. For example, the target limiting unit 117 limits the target to passengers who frequently ride on the target track-based traffic, such as passengers who board vehicles on the same route more than a certain number of times in a week, and calculates transmission characteristics. By statistically calculating the transmission characteristics, such as averaging the transmission characteristics for each passenger by the unit 115, the calculation accuracy of the transmission characteristics can be improved.

また、図3に示す異常検出部118は、車両3の左右方向の加速度Ac−Ycまたは車両3の上下方向の加速度Ac−Zcの少なくとも一方に基づいて、車両3または車両3が走行する軌道4の異常を検出する。例えば、異常検出部118は、他の車両3または列車30と比較して、車両3の左右方向の加速度Ac−Ycまたは車両3の上下方向の加速度Ac−Zcに特異な加速度が発生した場合、当該車両3または当該列車30に異常(特異な現象)が発生していると判断し、判断した結果を出力(記録、表示、電子メール送信等)する。また、例えば、異常検出部118は、複数の車両3または列車30で、軌道4上の同一の位置で、他の位置と比較して、車両3の左右方向の加速度Ac−Ycまたは車両3の上下方向の加速度Ac−Zcに特異な加速度が発生した場合、軌道4の当該位置で異常(特異な現象)が発生していると判断し、判断した結果を出力(記録、表示、電子メール送信等)する。あるいは、異常検出部118は、例えば、推定した上下、左右方向の加速度データが所定の閾値を超えた場合に車両3や軌道4で異常が発生していると判別してもよい。本実施形態では、取得した伝達関数と、携帯端末2から得られた上下加速度、左右加速度のデータから、車両3に発生している上下加速度、左右加速度の推定を行うことができるので、車両毎に加速度センサを設置しなくても、推定された上下加速度もしくは左右加速度が例えばある閾値以上と推定された場合に、異常が発生したと判別することができる。 Further, the abnormality detection unit 118 shown in FIG. 3 is based on at least one of the left-right acceleration Ac-Yc of the vehicle 3 and the vertical acceleration Ac-Zc of the vehicle 3, and the vehicle 3 or the track 4 on which the vehicle 3 travels. Detects anomalies. For example, when the abnormality detection unit 118 generates a specific acceleration in the lateral acceleration Ac-Yc of the vehicle 3 or the vertical acceleration Ac-Zc of the vehicle 3 as compared with the other vehicle 3 or the train 30. It is determined that an abnormality (unique phenomenon) has occurred in the vehicle 3 or the train 30, and the result of the determination is output (recording, display, e-mail transmission, etc.). Further, for example, the abnormality detection unit 118 is a plurality of vehicles 3 or trains 30 at the same position on the track 4, and the acceleration Ac-Yc of the vehicle 3 in the left-right direction or the vehicle 3 as compared with other positions. When a peculiar acceleration occurs in the vertical acceleration Ac-Zc, it is judged that an abnormality (a peculiar phenomenon) has occurred at the position of the orbit 4, and the judgment result is output (recording, display, e-mail transmission). Etc.). Alternatively, the abnormality detection unit 118 may determine, for example, that an abnormality has occurred in the vehicle 3 or the track 4 when the estimated vertical and horizontal acceleration data exceeds a predetermined threshold value. In the present embodiment, the vertical acceleration and the horizontal acceleration generated in the vehicle 3 can be estimated from the acquired transmission function and the vertical acceleration and the horizontal acceleration data obtained from the mobile terminal 2, so that each vehicle can be estimated. Even if an acceleration sensor is not installed in the vehicle, it can be determined that an abnormality has occurred when the estimated vertical acceleration or horizontal acceleration is estimated to be, for example, a certain threshold or higher.

次に、図4を参照して、処理装置1の動作例の概要について説明する。図4は、図1に示す処理装置1において、ある列車30を対象として車両3または軌道4に異常が発生しているか否かを検出する際の処理の概要の例を示すフローチャートである。なお、記憶部12は、携帯端末2や列車30から受信した処理対象のデータをすでに記憶しているものとする。 Next, an outline of an operation example of the processing device 1 will be described with reference to FIG. FIG. 4 is a flowchart showing an example of an outline of processing in the processing device 1 shown in FIG. 1 when detecting whether or not an abnormality has occurred in the vehicle 3 or the track 4 for a certain train 30. It is assumed that the storage unit 12 has already stored the data to be processed received from the mobile terminal 2 or the train 30.

図4に示す動作例では、処理装置1において、まず、データ抽出部112が、記憶部12が記憶している複数の携帯端末2から収集したデータから、時刻情報と携帯端末2の位置情報と対象車両3の運行情報に基づき、処理対象のデータを抽出する(ステップS101)。 In the operation example shown in FIG. 4, in the processing device 1, first, the data extraction unit 112 obtains time information and position information of the mobile terminal 2 from the data collected from the plurality of mobile terminals 2 stored in the storage unit 12. Data to be processed is extracted based on the operation information of the target vehicle 3 (step S101).

次に、車両加速度算出部113が、対象車両3の速度を時間微分して車両3の前後方向の加速度を算出する(ステップS102)。 Next, the vehicle acceleration calculation unit 113 calculates the acceleration in the front-rear direction of the vehicle 3 by time-differentiating the speed of the target vehicle 3 (step S102).

次に、加速度成分演算部114が、対象車両3で移動中に携帯端末2で計測された加速度の3軸成分に基づき、携帯端末2の加速度の車両の前後方向の成分を求める(ステップS103)。 Next, the acceleration component calculation unit 114 obtains the component of the acceleration of the mobile terminal 2 in the front-rear direction of the vehicle based on the three-axis component of the acceleration measured by the mobile terminal 2 while moving in the target vehicle 3 (step S103). ..

次に、伝達特性算出部115が、携帯端末2の加速度の車両の前後方向の成分と、車両3の前後方向の加速度との間の伝達特性を算出する(ステップS104)。 Next, the transmission characteristic calculation unit 115 calculates the transmission characteristic between the vehicle front-rear direction component of the acceleration of the mobile terminal 2 and the front-rear direction acceleration of the vehicle 3 (step S104).

次に、車両加速度推定部116が、車両3の前後方向の伝達特性を用いて、携帯端末2で計測された加速度の3軸成分に基づき、車両3の左右方向の加速度または車両3の上下方向の加速度の少なくとも一方を推定する(ステップS105)。 Next, the vehicle acceleration estimation unit 116 uses the transmission characteristics of the vehicle 3 in the front-rear direction and based on the three-axis component of the acceleration measured by the mobile terminal 2, the acceleration in the left-right direction of the vehicle 3 or the vertical direction of the vehicle 3. At least one of the accelerations of is estimated (step S105).

次に、異常検出部118が、車両3の左右方向の加速度または車両3の上下方向の加速度の少なくとも一方に基づいて、対象車両3または車両3が走行する軌道4の異常を検出する(ステップS106)。 Next, the abnormality detection unit 118 detects an abnormality in the track 4 on which the target vehicle 3 or the vehicle 3 travels based on at least one of the left-right acceleration of the vehicle 3 and the vertical acceleration of the vehicle 3 (step S106). ).

以上のように、本実施形態によれば、携帯端末2で計測された加速度から車両の加速度を推定することができるのでで、車両毎に加速度センサを設置することを不要とすることができる。 As described above, according to the present embodiment, since the acceleration of the vehicle can be estimated from the acceleration measured by the mobile terminal 2, it is not necessary to install an acceleration sensor for each vehicle.

次に、図5を参照して、処理装置1の他の動作例の概要について説明する。図5は、図1に示す処理装置1において、ある列車30を対象として車両3または軌道4に異常が発生しているか否かを検出する際の処理の概要の他の例を示すフローチャートである。なお、記憶部12は、携帯端末2や列車30から受信した処理対象のデータをすでに記憶しているものとする。 Next, an outline of another operation example of the processing device 1 will be described with reference to FIG. FIG. 5 is a flowchart showing another example of an outline of processing in the processing device 1 shown in FIG. 1 when detecting whether or not an abnormality has occurred in the vehicle 3 or the track 4 for a certain train 30. .. It is assumed that the storage unit 12 has already stored the data to be processed received from the mobile terminal 2 or the train 30.

図5に示す動作例では、処理装置1において、まず、データ抽出部112が、記憶部12が記憶している複数の携帯端末2から収集したデータから、時刻情報と携帯端末2の位置情報と対象車両3の運行情報に基づき、処理対象のデータを抽出する(ステップS201)。 In the operation example shown in FIG. 5, in the processing device 1, first, the data extraction unit 112 obtains time information and position information of the mobile terminal 2 from the data collected from the plurality of mobile terminals 2 stored in the storage unit 12. Data to be processed is extracted based on the operation information of the target vehicle 3 (step S201).

次に、対象限定部117が、加速度の3軸成分を計測した携帯端末2を、所定期間に所定回数以上、対象の車両3を利用した利用者の携帯端末2に限定する(ステップS202)。 Next, the target limiting unit 117 limits the mobile terminal 2 that has measured the three-axis components of acceleration to the mobile terminal 2 of the user who has used the target vehicle 3 a predetermined number of times or more in a predetermined period (step S202).

次に、車両加速度算出部113が、対象車両3の速度を時間微分して車両3の前後方向の加速度を算出する(ステップS203)。 Next, the vehicle acceleration calculation unit 113 calculates the acceleration in the front-rear direction of the vehicle 3 by time-differentiating the speed of the target vehicle 3 (step S203).

次に、加速度成分演算部114が、対象車両3で移動中に携帯端末2で計測された加速度の3軸成分に基づき、携帯端末2の加速度の車両の前後方向の成分を求める(ステップS204)。 Next, the acceleration component calculation unit 114 obtains the component of the acceleration of the mobile terminal 2 in the front-rear direction of the vehicle based on the three-axis component of the acceleration measured by the mobile terminal 2 while moving in the target vehicle 3 (step S204). ..

次に、伝達特性算出部115が、限定された携帯端末2で計測された加速度の3軸成分に基づき、携帯端末2の加速度の車両3の前後方向の成分と、車両3の前後方向の加速度との間の伝達特性を、過去の伝達特性も用いて統計的に算出する(ステップS205)。 Next, the transmission characteristic calculation unit 115 determines the acceleration component of the mobile terminal 2 in the front-rear direction of the vehicle 3 and the acceleration in the front-rear direction of the vehicle 3 based on the three-axis component of the acceleration measured by the limited mobile terminal 2. The transmission characteristics between and are statistically calculated using the past transmission characteristics (step S205).

次に、車両加速度推定部116が、車両3の前後方向の伝達特性を用いて、携帯端末2で計測された加速度の3軸成分に基づき、車両3の左右方向の加速度または車両3の上下方向の加速度の少なくとも一方を推定する(ステップS206)。 Next, the vehicle acceleration estimation unit 116 uses the transmission characteristics of the vehicle 3 in the front-rear direction and based on the three-axis component of the acceleration measured by the mobile terminal 2, the acceleration in the left-right direction of the vehicle 3 or the vertical direction of the vehicle 3. At least one of the accelerations of is estimated (step S206).

次に、異常検出部118が、車両3の左右方向の加速度または車両3の上下方向の加速度の少なくとも一方に基づいて、対象車両3または車両3が走行する軌道4の異常を検出する(ステップS207)。 Next, the abnormality detection unit 118 detects an abnormality in the track 4 on which the target vehicle 3 or the vehicle 3 travels based on at least one of the left-right acceleration of the vehicle 3 and the vertical acceleration of the vehicle 3 (step S207). ).

次に、図6を参照して、処理装置1の他の動作例の概要について説明する。図6は、図1に示す処理装置1において、ある列車30を対象としあて車両3または軌道4に異常が発生しているか否かを検出する際の処理の概要の他の例を示すフローチャートである。なお、記憶部12は、携帯端末2や列車30から受信した処理対象のデータをすでに記憶しているものとする。 Next, with reference to FIG. 6, an outline of another operation example of the processing device 1 will be described. FIG. 6 is a flowchart showing another example of an outline of processing in the processing device 1 shown in FIG. 1 when detecting whether or not an abnormality has occurred in the vehicle 3 or the track 4 for a certain train 30. is there. It is assumed that the storage unit 12 has already stored the data to be processed received from the mobile terminal 2 or the train 30.

図6に示す動作例では、処理装置1において、まず、データ抽出部112が、記憶部12が記憶している複数の携帯端末2から収集したデータから、時刻情報と携帯端末2の位置情報と対象車両3の運行情報に基づき、処理対象のデータを抽出する(ステップS301)。 In the operation example shown in FIG. 6, in the processing device 1, first, the data extraction unit 112 obtains time information and position information of the mobile terminal 2 from the data collected from the plurality of mobile terminals 2 stored in the storage unit 12. Data to be processed is extracted based on the operation information of the target vehicle 3 (step S301).

次に、車両加速度算出部113が、対象車両3の速度を時間微分して車両3の前後方向の加速度を算出する(ステップS302)。 Next, the vehicle acceleration calculation unit 113 calculates the acceleration in the front-rear direction of the vehicle 3 by time-differentiating the speed of the target vehicle 3 (step S302).

次に、加速度成分演算部114が、対象車両3で移動中に携帯端末2で計測された加速度の3軸成分に基づき、携帯端末2の加速度の車両の前後方向の成分を求める(ステップS303)。 Next, the acceleration component calculation unit 114 obtains the component of the acceleration of the mobile terminal 2 in the front-rear direction of the vehicle based on the three-axis component of the acceleration measured by the mobile terminal 2 while moving in the target vehicle 3 (step S303). ..

次に、伝達特性算出部115が、始発駅から乗車した利用者(人)100の携帯端末2の群と、途中駅から乗車した利用者(人)100の携帯端末2の群に分けて、携帯端末2の加速度の車両3の前後方向の成分と、車両3の前後方向の加速度との間の群毎に伝達特性を統計的に算出する(ステップS304)。 Next, the transmission characteristic calculation unit 115 divides the group into a group of mobile terminals 2 of 100 users (people) who boarded from the first station and a group of mobile terminals 2 of 100 users (people) who boarded from the intermediate station. The transmission characteristic is statistically calculated for each group between the front-rear direction component of the vehicle 3 of the acceleration of the mobile terminal 2 and the front-rear direction acceleration of the vehicle 3 (step S304).

次に、車両加速度推定部116が、群毎に、車両3の前後方向の伝達特性を用いて、携帯端末2で計測された加速度の3軸成分に基づき、車両3の左右方向の加速度または車両3の上下方向の加速度の少なくとも一方を推定する(ステップS305)。 Next, the vehicle acceleration estimation unit 116 uses the transmission characteristics of the vehicle 3 in the front-rear direction for each group, and based on the three-axis component of the acceleration measured by the mobile terminal 2, the acceleration in the left-right direction of the vehicle 3 or the vehicle At least one of the vertical accelerations of 3 is estimated (step S305).

次に、異常検出部118が、群毎に、車両3の左右方向の加速度または車両3の上下方向の加速度の少なくとも一方に基づいて、対象車両3または車両3が走行する軌道4の異常を検出する(ステップS306)。 Next, the abnormality detection unit 118 detects an abnormality in the target vehicle 3 or the track 4 on which the vehicle 3 travels, based on at least one of the left-right acceleration of the vehicle 3 and the vertical acceleration of the vehicle 3 for each group. (Step S306).

以上のように本実施形態によれば、乗客が使用している携帯端末で取得したデータについて、車両〜人〜携帯端末の間の伝達関数を導入して、データを集約/分析し、車両や軌道の異常をモニタリング(検出)することができる。乗客が使用している携帯端末で取得したデータを集約/分析し、車両や軌道の異常をモニタリングする場合の携帯端末がどのような状態で保持されているか不明であるが、車両〜人〜携帯端末の間の伝達関数を導入することで、携帯端末がどのような状態で保持されているかに関わらず、加速度データの分析/評価が可能となる。 As described above, according to the present embodiment, regarding the data acquired by the mobile terminal used by the passenger, a transfer function between the vehicle, the person, and the mobile terminal is introduced to aggregate / analyze the data, and the vehicle or the vehicle Orbital abnormalities can be monitored (detected). It is unclear in what state the mobile terminal is held when aggregating / analyzing the data acquired by the mobile terminal used by the passenger and monitoring the abnormality of the vehicle or track, but the vehicle-person-mobile By introducing a transfer function between terminals, acceleration data can be analyzed / evaluated regardless of the state in which the mobile terminal is held.

また、伝達関数は区間ごとや乗客が登場する度に算出して平均値を取るなどにより、精度を向上させていくことができる。また、伝達関数は、例えば駅と駅の間の区間で、1つの値を算出してもよいし、駅と駅の間の区間をさらに細分化した区間毎あるいは所定の時間毎に複数の伝達関数を算出してもよい。また、上記処理装置1の動作例では記憶部12に処理対象のデータが記憶された後にデータを処理することとしたが、例えば、所定量あるいは所定時間分のデータが収集される度に、収集されたデータに基づいて、加速度の推定、異常検出等の処理を随時行うようにしてもよい。この場合、おおむねリアルタイムで異常検出を行うことができる。 In addition, the accuracy of the transfer function can be improved by calculating the transfer function for each section or each time a passenger appears and taking the average value. Further, the transfer function may calculate one value in the section between stations, for example, or a plurality of transfer functions for each section in which the section between stations is further subdivided or for each predetermined time. You may calculate the function. Further, in the operation example of the processing device 1, it is decided to process the data after the data to be processed is stored in the storage unit 12, but for example, every time a predetermined amount or a predetermined time of data is collected, the data is collected. Based on the obtained data, processing such as acceleration estimation and abnormality detection may be performed at any time. In this case, abnormality detection can be performed in almost real time.

なお、上記実施形態では、位置情報を取得する際に、車内の無線LAN信号もしくは衛星測位信号を利用することで、どの車両に乗車しているかを特定してもよい。 In the above embodiment, it is possible to specify which vehicle is in the vehicle by using the wireless LAN signal or the satellite positioning signal in the vehicle when acquiring the position information.

以上のように本実施形態によれば、車両速度データのみから把握が可能な車両前後方向加速度データから車体〜人〜携帯端末間の伝達関数特性を推定し、その伝達関数特性を用いて簡易的に車体に発生している上下方向、左右方向の加速度を推定することができる。 As described above, according to the present embodiment, the transfer function characteristics between the vehicle body, the person, and the mobile terminal are estimated from the vehicle front-rear direction acceleration data that can be grasped only from the vehicle speed data, and the transfer function characteristics are used for simplification. It is possible to estimate the acceleration in the vertical and horizontal directions generated in the vehicle body.

なお、上記実施形態では、車両速度からの加速度算出時は、そのまま車両速度の時間変化を計算した場合、高周波数成分が残ることから、計算した結果に適切なローパスフィルタ処理を行い、高周波数成分をカットするようにしてもよい。 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, a high frequency component remains. Therefore, an appropriate low-pass filter process is performed on the calculated result to obtain a high frequency component. May be cut.

また、推定した上下、左右方向の加速度データが閾値を超えたということのみで異常と判別する場合、対象の乗客が大きく携帯端末を動かしたのみで異常と判別してしまい、正しくモニタリングができない可能性がある。また、前後加速度データのみから伝達関数を推定しているため、伝達関数の精度自体が低い可能性がある。このような課題を解決するため、上記実施形態では、分析対象とする携帯端末数を複数台とし、ある閾値以上の割合の携帯端末で異常な加速度が発生したと推定された場合のみ、車両もしくは軌道に異常が発生したと判別するようにしてもよい。 In addition, if the estimated vertical and horizontal acceleration data exceeds the threshold value and is determined to be abnormal, it will be determined to be abnormal only by the target passenger moving the mobile terminal significantly, and it is possible that monitoring cannot be performed correctly. There is sex. Moreover, since the transfer function is estimated only from the front-back acceleration data, the accuracy of the transfer function itself may be low. In order to solve such a problem, in the above embodiment, the number of mobile terminals to be analyzed is set to a plurality of units, and the vehicle or the vehicle or only when it is estimated that abnormal acceleration occurs in the mobile terminals at a ratio of a certain threshold value or more. It may be determined that an abnormality has occurred in the orbit.

なお、上記実施形態において姿勢角情報を用いる各処理では、姿勢角情報に代えて、例えば画面点灯情報、アプリ等の使用状態や入出力操作の状態等に応じて、携帯端末2が使用状態であると推定される場合に、姿勢角を所定の固定値として、各処理を行うようにしてもよい。この場合、姿勢角情報の収集を省略することができる。 In each process using the posture angle information in the above embodiment, the mobile terminal 2 is in the usage state according to, for example, screen lighting information, the usage state of the application, the input / output operation state, etc., instead of the posture angle information. When it is presumed that there is, each process may be performed with the posture angle as a predetermined fixed value. In this case, the collection of posture angle information can be omitted.

なお、携帯端末2の加速度と車両3の前後方向の加速度との比較の際、比較対象とするデータは、A駅5−1出発時の加速(力行)からB駅5−2停車時の減速(回生)までの一連の加速度データ全てを使うのが好ましい。これは、惰行運転中だけだと車両自体の加速度の変化が乏しく、相関性の評価の精度が悪くなることが想定されるためである。 When comparing the acceleration of the mobile terminal 2 with the acceleration of the vehicle 3 in the front-rear direction, the data to be compared is from the acceleration (powering) at the departure of station A 5-1 to the deceleration at the time of stopping at station B 5-2. It is preferable to use the entire series of acceleration data up to (regeneration). This is because it is assumed that the change in the acceleration of the vehicle itself is small and the accuracy of the correlation evaluation deteriorates only during coasting.

以上、この発明の実施形態について図面を参照して説明してきたが、具体的な構成は上記実施形態に限られるものではなく、この発明の要旨を逸脱しない範囲の設計変更等も含まれる。 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 within a range not deviating from the gist of the present invention are also included.

〈コンピュータ構成〉
図12は、上記実施形態に係るコンピュータの構成を示す概略ブロック図である。
コンピュータ90は、プロセッサ91、メインメモリ92、ストレージ93、インタフェース94を備える。
上述の処理装置1、携帯端末2、記憶装置7等は、コンピュータ90に実装される。そして、上述した各処理部の動作は、プログラムの形式でストレージ93に記憶されている。プロセッサ91は、プログラムをストレージ93から読み出してメインメモリ92に展開し、当該プログラムに従って上記処理を実行する。また、プロセッサ91は、プログラムに従って、上述した各記憶部に対応する記憶領域をメインメモリ92に確保する。
<Computer configuration>
FIG. 12 is a schematic block diagram showing a configuration of a computer according to the above embodiment.
The computer 90 includes a processor 91, a main memory 92, a storage 93, and an interface 94.
The above-mentioned processing device 1, mobile terminal 2, storage device 7, and the like are mounted on the 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 a program from the storage 93, expands it into the main memory 92, and executes the above processing according to the program. Further, the processor 91 secures a storage area corresponding to each of the above-mentioned storage units in the main memory 92 according to the program.

プログラムは、コンピュータ90に発揮させる機能の一部を実現するためのものであってもよい。例えば、プログラムは、ストレージに既に記憶されている他のプログラムとの組み合わせ、または他の装置に実装された他のプログラムとの組み合わせによって機能を発揮させるものであってもよい。なお、他の実施形態においては、コンピュータは、上記構成に加えて、または上記構成に代えてPLD(Programmable Logic Device)などのカスタムLSI(Large Scale Integrated Circuit)を備えてもよい。PLDの例としては、PAL(Programmable Array Logic)、GAL(Generic Array Logic)、CPLD(Complex Programmable Logic Device)、FPGA(Field Programmable Gate Array)が挙げられる。この場合、プロセッサによって実現される機能の一部または全部が当該集積回路によって実現されてよい。 The program may be for realizing a part of the functions exerted by the computer 90. For example, the program may exert its function in combination with another program already stored in the storage, or in combination with another program mounted on another device. In another embodiment, the computer may include a custom LSI (Large Scale Integrated Circuit) such as a PLD (Programmable Logic Device) in addition to or in place of the above configuration. Examples of PLDs include PAL (Programmable Array Logic), GAL (Generic Array Logic), CPLD (Complex Programmable Logic Device), and FPGA (Field Programmable Gate Array). In this case, some or all of the functions realized by the processor may be realized by the integrated circuit.

ストレージ93の例としては、HDD(Hard Disk Drive)、SSD(Solid State Drive)、磁気ディスク、光磁気ディスク、CD−ROM(Compact Disc Read Only Memory)、DVD−ROM(Digital Versatile Disc Read Only Memory)、半導体メモリ等が挙げられる。ストレージ93は、コンピュータ90のバスに直接接続された内部メディアであってもよいし、インタフェース94または通信回線を介してコンピュータ90に接続される外部メディアであってもよい。また、このプログラムが通信回線によってコンピュータ90に配信される場合、配信を受けたコンピュータ90が当該プログラムをメインメモリ92に展開し、上記処理を実行してもよい。少なくとも1つの実施形態において、ストレージ93は、一時的でない有形の記憶媒体である。 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), and DVD-ROM (Digital Versatile Disc Read Only Memory). , Semiconductor memory and the like. The storage 93 may be internal media directly connected to the bus of the computer 90, or external media connected to the computer 90 via the interface 94 or a communication line. When this program is distributed to the computer 90 via a communication line, the distributed computer 90 may expand the program in the main memory 92 and execute the above processing. In at least one embodiment, the storage 93 is a non-temporary tangible storage medium.

10 軌道車両監視システム
1 処理装置
2、2−1、2−2 携帯端末
3、3−1、3−2 車両
4 軌道
6 通信網
8 速度センサ
30、30−1 列車
11 処理部
12 記憶部
14 通信部
21 通信部
22 表示入力部
23 時刻取得部
24 位置情報取得部
25 加速度検知部
26 姿勢角検知部
27 点灯状態検知部
28 アプリ実行部
29 記憶部
111 データ蓄積部
112 データ抽出部
113 車両加速度算出部
114 加速度成分演算部
115 伝達特性算出部
116 車両加速度推定部
117 対象限定部
118 異常検出部
10 Track vehicle monitoring system 1 Processing device 2, 2-1 and 2-2 Mobile terminals 3, 3-1 and 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 App execution unit 29 Storage unit 111 Data storage unit 112 Data extraction unit 113 Vehicle acceleration Calculation unit 114 Acceleration component calculation unit 115 Transmission characteristic calculation unit 116 Vehicle acceleration estimation unit 117 Target limitation unit 118 Abnormality detection unit

Claims (8)

車両の速度を微分して前記車両の前後方向の加速度を算出する車両加速度算出部と、
前記車両で移動中の携帯端末で計測された加速度の3軸成分に基づき、前記携帯端末の加速度の前記車両の前後方向の成分を求める加速度成分演算部と、
前記加速度成分演算部が求めた前記携帯端末の加速度の前記車両の前後方向の成分と前記車両加速度算出部が算出した前記車両の前後方向の加速度との間の伝達特性を算出する伝達特性算出部と、
前記伝達特性算出部が算出した前記伝達特性を用いて、前記携帯端末で計測された加速度の3軸成分に基づき、前記車両の左右方向の加速度または前記車両の上下方向の加速度の少なくとも一方を推定する車両加速度推定部と
を備える加速度推定装置。
A vehicle acceleration calculation unit that differentiates the speed of the vehicle and calculates the acceleration in the front-rear direction of the vehicle,
An acceleration component calculation unit that obtains a component of the acceleration of the mobile terminal in the front-rear direction of the vehicle based on a three-axis component of acceleration measured by the mobile terminal moving in the vehicle.
A transmission characteristic calculation unit that calculates a transmission characteristic between the front-rear direction component of the vehicle and the front-rear direction acceleration of the vehicle calculated by the vehicle acceleration calculation unit, which is obtained by the acceleration component calculation unit. When,
Using the transmission characteristic calculated by the transmission characteristic calculation unit, at least one of the left-right acceleration of the vehicle and the vertical acceleration of the vehicle is estimated based on the three-axis component of the acceleration measured by the mobile terminal. Acceleration estimation device including a vehicle acceleration estimation unit.
前記加速度成分演算部は、前記車両で移動中の携帯端末で計測された加速度の3軸成分に基づき、前記車両加速度算出部が算出した前記車両の前後方向の加速度との相関係数が比較的高い成分を、前記携帯端末の加速度の前記車両の前後方向の成分とする
請求項1に記載の加速度推定装置。
The acceleration component calculation unit has a relatively high correlation coefficient with the acceleration in the front-rear direction of the vehicle calculated by the vehicle acceleration calculation unit based on the three-axis component of the acceleration measured by the mobile terminal moving in the vehicle. The acceleration estimation device according to claim 1, wherein a high component is a component of the acceleration of the mobile terminal in the front-rear direction of the vehicle.
前記加速度成分演算部は、前記車両で移動中の携帯端末で計測された加速度の3軸成分に基づき、前記携帯端末の姿勢角情報に基づいて前記携帯端末の加速度の前記車両の上下方向の成分を求め、前記携帯端末の加速度の前記車両の上下方向の成分と垂直で、前記車両加速度算出部が算出した前記車両の前後方向の加速度との相関係数が比較的高い成分を、前記携帯端末の加速度の前記車両の前後方向の成分とする
請求項1に記載の加速度推定装置。
The acceleration component calculation unit is based on the three-axis component of the acceleration measured by the mobile terminal moving in the vehicle, and the vertical component of the acceleration of the mobile terminal based on the attitude angle information of the mobile terminal. The portable terminal is obtained from a component that is perpendicular to the vertical component of the vehicle in the acceleration of the mobile terminal and has a relatively high correlation coefficient with the acceleration in the front-rear direction of the vehicle calculated by the vehicle acceleration calculation unit. The acceleration estimation device according to claim 1, wherein the acceleration of the vehicle is a component in the front-rear direction of the vehicle.
前記加速度の3軸成分を計測した前記携帯端末を、所定期間に所定回数以上、前記車両を利用した利用者の携帯端末に限定する対象限定部をさらに備え、
前記伝達特性算出部が、前記対象限定部が限定した前記携帯端末で計測された前記加速度の3軸成分に基づき、前記伝達特性を過去の伝達特性も用いて統計的に算出する
請求項1から3のいずれか1項に記載の加速度推定装置。
The mobile terminal that measures the three-axis component of the acceleration is further provided with a target limiting unit that limits the mobile terminal to the mobile terminal of the user who uses the vehicle for a predetermined number of times or more in a predetermined period.
From claim 1, the transmission characteristic calculation unit statistically calculates the transmission characteristic using the past transmission characteristics based on the three-axis component of the acceleration measured by the mobile terminal limited by the target limitation unit. The acceleration estimation device according to any one of 3.
前記伝達特性算出部は、始発駅から乗車した人の前記携帯端末の群と、途中駅から乗車した人の前記携帯端末の群とに分けて、前記群毎に前記伝達特性を統計的に算出する
請求項1から4のいずれか1項に記載の加速度推定装置。
The transmission characteristic calculation unit divides the group of the mobile terminals of people who boarded from the first station and the group of mobile terminals of people who boarded from the intermediate station, and statistically calculates the transmission characteristics for each group. The acceleration estimation device according to any one of claims 1 to 4.
前記車両の左右方向の加速度または前記車両の上下方向の加速度の少なくとも一方に基づいて、前記車両または前記車両が走行する軌道の異常を検出する異常検出部を
さらに備える
請求項1から5のいずれか1項に記載の加速度推定装置。
Any of claims 1 to 5, further comprising an abnormality detection unit that detects an abnormality in the vehicle or the track on which the vehicle travels based on at least one of the left-right acceleration of the vehicle and the vertical acceleration of the vehicle. The acceleration estimation device according to item 1.
車両加速度算出部によって、車両の速度を微分して前記車両の前後方向の加速度を算出し、
加速度成分演算部によって、前記車両で移動中の携帯端末で計測された加速度の3軸成分に基づき、前記携帯端末の加速度の前記車両の前後方向の成分を求め、
伝達特性算出部によって、前記加速度成分演算部が求めた前記携帯端末の加速度の前記車両の前後方向の成分と前記車両加速度算出部が算出した前記車両の前後方向の加速度との間の伝達特性を算出し、
車両加速度推定部によって、前記伝達特性算出部が算出した前記伝達特性を用いて、前記携帯端末で計測された加速度の3軸成分に基づき、前記車両の左右方向の加速度または前記車両の上下方向の加速度の少なくとも一方を推定する
加速度推定方法。
The vehicle acceleration calculation unit differentiates the speed of the vehicle to calculate the acceleration in the front-rear direction of the vehicle.
Based on the three-axis component of the acceleration measured by the mobile terminal moving in the vehicle by the acceleration component calculation unit, the component of the acceleration of the mobile terminal in the front-rear direction of the vehicle is obtained.
The transmission characteristic calculation unit determines the transmission characteristic between the vehicle front-rear direction component of the mobile terminal acceleration obtained by the acceleration component calculation unit and the vehicle front-rear acceleration calculated by the vehicle acceleration calculation unit. Calculate and
Using the transmission characteristics calculated by the vehicle acceleration estimation unit and the transmission characteristics calculation unit, the acceleration in the left-right direction of the vehicle or the vertical direction of the vehicle is based on the three-axis component of the acceleration measured by the mobile terminal. An acceleration estimation method that estimates at least one of the accelerations.
前記車両の左右方向の加速度または前記車両の上下方向の加速度の少なくとも一方に基づいて、前記車両または前記車両が走行する軌道の異常を検出するステップをさらに有する
請求項7に記載の加速度推定方法。
The acceleration estimation method according to claim 7, further comprising a step of detecting an abnormality of the vehicle or the track on which the vehicle travels based on at least one of the left-right acceleration of the vehicle and the vertical acceleration of the vehicle.
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