WO2011118290A1 - 移動体異常判断支援システム - Google Patents
移動体異常判断支援システム Download PDFInfo
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- WO2011118290A1 WO2011118290A1 PCT/JP2011/053234 JP2011053234W WO2011118290A1 WO 2011118290 A1 WO2011118290 A1 WO 2011118290A1 JP 2011053234 W JP2011053234 W JP 2011053234W WO 2011118290 A1 WO2011118290 A1 WO 2011118290A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/50—Trackside diagnosis or maintenance, e.g. software upgrades
- B61L27/57—Trackside diagnosis or maintenance, e.g. software upgrades for vehicles or trains, e.g. trackside supervision of train conditions
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- the present invention relates to a moving body abnormality determination support system having a state monitoring device that monitors the state of various devices provided in the moving body, and more particularly to a system that includes support for abnormality determination of a moving body by a ground system.
- a system that detects an abnormality of a moving body a system that acquires state data of the moving body and analyzes the acquired data when a failure occurs to detect an abnormality is widely known.
- “failure” means “a state where the device is different from the normal state”.
- “abnormal” means “a state that is not desired as a system due to a device failure and needs to be recovered by stopping the device”.
- a sensor that detects the state is attached to a moving body, the sensor output is stored in the moving body, and the ground system analyzes the sensor output and extracts an abnormality detection condition.
- a system is provided that has an extraction function, inputs the abnormality detection condition to a moving body, and compares the sensor output with the abnormality detection condition on the moving body to detect an abnormality of the moving body.
- the vehicle dynamics are aggregated and analyzed, so that Vehicle dynamic management has been proposed in which a fixed sensor is not installed at a point, and the same effect is obtained as when the sensor is installed and the vehicle dynamic value is comprehensively observed (Patent Document 2).
- the data acquisition interval is calculated by calculating the characteristic evaluation value for evaluating whether the characteristic of the stored value follows the past characteristic for the section instead of one value.
- aggregation processing is performed, and estimation processing is performed for subsections with missing values to obtain characteristic evaluation values.
- a low-cost, high-definition vehicle that calculates the attribution probability indicating the probability that the characteristic evaluation value is valid, compares the attribution probability with the threshold value, and issues a warning if the characteristic evaluation value is below the threshold value We intend to do dynamic management.
- the status data of multiple devices in the same vehicle are compared and the abnormality is detected by separating them into position factor components and device factor components, but only the data in the same vehicle is used.
- the vehicle data is not utilized.
- vehicle status data is classified for each small section, and abnormal alarm judgment is made by comparing with past section information.
- communication with the ground side will occur sequentially, and when vehicle dynamics are transmitted to the ground side by wireless communication, it becomes a burden in terms of transmission capacity, cost, and reliability, and raw data is accumulated Then, a huge storage capacity is required.
- the moving object abnormality determination support system includes a measuring device that measures the state of various devices included in the moving member, and state data of the various devices measured by the measuring device.
- a state monitoring device that detects the occurrence of a failure using the communication device, and a communication device that transmits to the ground system the type of failure that occurred and state data before and after the failure, and receives an abnormality determination result from the ground system.
- the ground system analyzes a communication device that transmits / receives data to / from a mobile unit, a storage unit that stores past fault type and status data of the mobile unit, and status data of past faults.
- An abnormality diagnosis unit that outputs an abnormality diagnosis result for determining whether or not there is an abnormality.
- the ground system further includes an abnormality analysis database that stores the past failure types, abnormality diagnosis results, and state data in association with each other, a failure type transmitted from the mobile unit, and a state before and after the failure occurrence.
- an abnormality occurrence predicting unit that outputs an abnormality determination result by comparing the data with past failure types and state data stored in the abnormality analysis database, and the communication device of the ground system displays the abnormality determination result. Send to the mobile.
- the ground system determines the failure by comparing the failure information (failure type and status data) with the past failure information. Since the abnormality determination result obtained by performing is returned to the moving body side, the moving body can receive support for determining whether or not there is an abnormality from the ground system, and the abnormality determination with high accuracy can be performed. Since past information provided on the ground system side is obtained offline (when inspecting a moving object, etc.), it is not necessary to provide equipment with high costs to enable failure information to be transmitted by constant communication. . In addition, the failure information obtained by the ground system can be automatically or manually analyzed in advance and stored in the abnormality analysis database. The abnormality occurrence prediction unit searches past information in the abnormality analysis database based on the type of failure and the latest state data associated with the failure newly generated from the mobile body, and outputs the abnormality determination result in comparison with the search result. .
- the abnormality occurrence prediction unit extracts from the abnormality analysis database state data of the same failure type as the failure type transmitted from the mobile unit, and the state at the time of failure occurrence
- the degree of similarity between the data and the state data extracted from the abnormality analysis database can be calculated, and the abnormality diagnosis result of the state data having a high degree of similarity or the total value can be output as the abnormality determination result. That is, the ground system calculates the degree of similarity of state data by performing matching processing with the past information extracted from the anomaly analysis database for the failure information that has just occurred in the mobile object, and based on the similarity, It is possible to output an abnormality diagnosis result of the failed failure.
- the abnormality occurrence prediction unit can output the reliability based on the aggregate value of abnormality diagnosis results of past failure state data having a high degree of similarity and the number of extracted abnormality analysis databases of the same failure type. .
- the abnormality diagnosis result is a result that the degree of similarity with one of two different tendencies is high, or that the degree of similarity is low for either of two different tendencies.
- a high degree of similarity can be an index with a high degree of reliability for each tendency corresponding to the degree of similarity, and a low degree of similarity can be an indicator with a reasonable degree of reliability.
- the appearance frequency obtained based on the past failure status data for each trend is trusted. It can be a measure of degree.
- the abnormality occurrence prediction unit includes a monitor that presents an abnormality determination result, and the final abnormality determination result that has been determined based on the abnormality determination result presented on the monitor is the mobile body. Can be transmitted via the input interface.
- the mobile body includes a state data storage unit that accumulates the type of failure and the state data, and the state data stored in the state data storage unit is transmitted to the ground system using a data transmission medium that is different from the communication device.
- the ground system can output the failure type and status data of a plurality of moving bodies, and output an abnormality diagnosis result based on the stored type and status data of the failure.
- the type of failure that has occurred in the moving object and the status data before and after the occurrence of the failure need not be transmitted to the ground side by sequential wireless communication, such as periodic inspections.
- sequential wireless communication such as periodic inspections.
- the measurement and storage of data performed by a moving object can be performed by setting a cycle at a level that enables detailed analysis performed by the ground system.
- the ground system As a result of the abnormality determination performed by the ground system, a determination as to whether or not a failure occurs to an abnormality is made with reference to a past case, so that an abnormality determination with high accuracy is possible.
- the present invention does not adopt an aspect depending on information according to the movement section, so it is referred to including information on other movement sections, and support with higher accuracy from data with a large number of references. Can be done.
- the ground system can assist in determining the abnormality, and even if there is a failure, it is possible to avoid an unnecessary stop when a failure occurs that would not lead to an abnormality. improves. In particular, when the moving body is a train, the railway service quality is improved.
- FIG. 1 is a system configuration diagram showing an embodiment of a moving object abnormality determination support system according to the present invention.
- FIG. 2 is a diagram showing a data structure of an abnormality analysis database in the mobile object abnormality determination support system shown in FIG.
- FIG. 3 is a flowchart illustrating an example of a processing flow of the abnormality occurrence prediction unit in the ground system of the moving object abnormality determination support system illustrated in FIG. 1.
- FIG. 4 is a diagram illustrating a determination example of an abnormality occurrence prediction unit in the ground system of the moving object abnormality determination support system illustrated in FIG. 1.
- FIG. 5 is a diagram showing an example of a determination support screen of the abnormality occurrence prediction unit in the ground system of the moving object abnormality determination support system shown in FIG.
- FIG. 6 is a diagram illustrating a screen example of the state monitoring device in the moving object of the moving object abnormality determination support system illustrated in FIG. 1.
- Embodiments of a moving object abnormality determination support system according to the present invention will be described with reference to the drawings.
- a system using a train as a moving body is described below.
- FIG. 1 shows a system configuration diagram of a moving object abnormality determination support system of the present invention.
- a moving body abnormality determination support system 100 includes a moving body, that is, a train 101 and a ground system 102.
- the train 101 stores the measurement device 103 that measures the state of various devices included in the train 101, the state monitoring device 104 that monitors the state of various devices measured by the measurement device 103, and the state data monitored by the state monitoring device 104.
- a state data storage unit 105, information on the state monitoring device 104 is displayed to the driver, a monitor 106 that receives input from the driver, and a communication device that is connected to the state monitoring device 104 and transmits / receives data to / from the ground system 102. 107.
- the ground system 102 is analyzed by a state data storage unit 111 that stores state data of various devices included in the train 101, an abnormality diagnosis unit 112 that determines the presence / absence and cause of abnormality from the data in the state data storage unit 111, and an abnormality diagnosis unit 112.
- a state data storage unit 111 that stores state data of various devices included in the train 101
- an abnormality diagnosis unit 112 that determines the presence / absence and cause of abnormality from the data in the state data storage unit 111
- an abnormality diagnosis unit 112. are connected to the abnormality analysis database 113 for storing the abnormality diagnosis results, the communication device 114 for transmitting and receiving data by communication with the train, the communication device 114 and the abnormality analysis database 113, and whether or not an abnormality will occur in the train in the future
- An abnormality occurrence prediction unit 115 for determining whether or not an abnormality occurrence prediction unit 115 is displayed to a worker of the ground system, and a monitor 116 that receives the input is provided.
- the moving object abnormality determination support system 100 performs abnormality determination and a data flow.
- the system 100 includes two processes: a normal process that is normally performed, and a failure occurrence process that is performed when a failure occurs.
- the measuring device 103 is a state of equipment provided in the train (for example, a carriage, a brake, etc.) and a state of a sensor provided in the equipment (hereinafter, these states are collectively referred to as “equipment state”). It is simply a device that acquires "status data”.
- the measuring device 103 sends state data, that is, part or all of the data of the measured physical quantity that changes every moment of the device to the state monitoring device 104. Further, the measuring device 103 itself may be provided with a device self-health check function, and the device status code or failure code may be sent to the status monitoring device 104.
- the state monitoring device 104 displays the state data and the state code sent from the measuring device 103 on the monitor 106.
- the state monitoring device 104 also monitors the state data, detects a device failure from the change in the state data, and generates a failure code.
- the device failure detection method generates a failure code using a known method, for example, when the range of preset upper and lower limit values is exceeded, or when data cannot be acquired for a certain period of time.
- the generated failure code is displayed on the monitor 106 together with the failure code generated by the measuring device 103, and stored in the state data storage unit 105 together with the state data.
- the state data storage unit 105 stores and accumulates normal state data and failure codes.
- the status data is data used for abnormality diagnosis in the ground system described later, it is detailed status data (hereinafter referred to as “detailed status data”) with high time resolution (for example, a cycle of 100 msec). is necessary.
- the failure mode and detailed state data stored in the state data storage unit 105 are stored in the state data storage unit 111 of the ground system 102 via the data flow 108.
- the data flow 108 is a flow for regularly moving a large amount of data.
- a method using a storage medium by a maintenance staff at a periodic train inspection, a method of connecting a cable, a method using proximity wireless, or the like may be used.
- the communication device 107 may be used if there is a sufficient data transfer capacity.
- the state data storage unit 111 stores failure modes and detailed state data of a plurality of trains.
- the abnormality diagnosis unit 112 periodically analyzes and analyzes the data of the state data storage unit 111, and detects whether there is an abnormality in the device when the failure mode is recorded.
- the failure represents a state in which the device is different from the normal state
- the abnormality represents a state that is not desired as a system due to the failure of the device, or a state that requires recovery by stopping the device.
- a commonly-known data analysis method may be used for the abnormality detection, and the abnormality location of the state data is detected by using frequency analysis, principal component analysis, regression analysis, etc., and the cause of the abnormality is specified. Moreover, you may observe the actual apparatus which caused the abnormality manually.
- the abnormality diagnosis unit 112 records an abnormality diagnosis result indicating whether an abnormality has occurred in a certain failure mode in the abnormality analysis database 113. Although details of the abnormality analysis database will be described later, failure modes, abnormality diagnosis results, and state data are recorded in association with each other.
- the moving object abnormality determination support system 100 can be provided in the abnormality analysis database 113 of the ground system 102 in association with the state data, failure mode, and abnormality diagnosis result measured by the train 101.
- the ground system 102 is provided with the abnormality analysis database 113 to handle the state data for a plurality of trains 101.
- the part up to the generation of the failure mode in the state monitoring device 104 using the state data acquired from the measuring device 103 when the failure occurs is common to the normal processing.
- the failure occurrence status is presented to the driver through the monitor 106.
- the train 101 transmits the failure mode and the latest state data 109 to the ground system 102 via the communication device 107, and the abnormality determination result determined based on the transmitted state data 109 is sent from the ground system 102.
- the reliability 110 is received. Based on the abnormality determination result and its reliability 110, the driver can determine whether or not to continue the operation. That is, in the ground system 102, the communication device 114 receives the failure mode at the time of the failure and the latest state data 109.
- the abnormality occurrence prediction unit 115 compares the failure mode and the latest state data 109 with the abnormality diagnosis result made by the abnormality diagnosis unit 112 recorded together with the failure mode in the abnormality analysis database 113, so that the failure mode at the time of occurrence of the failure.
- the past failure mode corresponding to the above and the abnormality diagnosis result are extracted, and the prediction result as to whether or not the failure mode is connected to the abnormality from the abnormality diagnosis result is output to the train 101 as the abnormality determination result and its reliability 110. . Details of the processing of the abnormality occurrence prediction unit 115 will be described later.
- the abnormality occurrence prediction unit 115 may include a monitor 116 and look at the output result of the abnormality occurrence prediction unit 115, and the maintenance staff or the operation manager may make a decision to send the abnormality determination result and the reliability 110 to the train. .
- the moving object abnormality determination support system 100 can determine whether or not the operation is continued by obtaining the abnormality determination result and its reliability 110 in both the train 101 and the ground system 102. .
- the reliability of the response at the time of failure occurrence is improved, so even if the status data alone can not detect an abnormality, it is possible to determine the operation continuity, and as a result This leads to an improvement in operating rate.
- FIG. 2 shows the data structure of the abnormality analysis database 113 of the ground system 102.
- the abnormality analysis database 113 includes abnormality analysis data 201 shown in (a) and related detailed state data 202 shown in (b).
- the abnormality analysis data 201 includes pointers 1 to N that determine access to failure modes, abnormality diagnosis results, and state data.
- the failure mode includes a device that outputs the failure mode and a code that indicates the type of the failure.
- the abnormality diagnosis result is a result diagnosed by the abnormality diagnosis unit 112 and includes the presence / absence of an abnormality of the device and the cause of the abnormality when the device is abnormal.
- the pointer to the status data is a pointer to status data related to the failure mode, and may include a plurality of status data, for example, status data of the device if the status of different devices affects the failure.
- the status data pointer refers to data around the failure mode occurrence location in the detailed status data 202.
- the detailed status data 202 includes a status data header, a failure detection time, and a status data string.
- the status data header includes various basic information related to the status data, such as the type of status data (basic information related to the time of the status data string, the address of the status data, etc.).
- the failure detection time includes the time when the failure mode occurs and is detected. By including the failure detection time, it becomes easy to extract state data around the failure mode occurrence.
- the state data string is time-series data of the state data, includes time, state data, and an abnormality flag, and stores the time when the abnormality flag is set corresponding to the detection time.
- the abnormality flag is a result of determining whether or not the state data at the time is abnormal, and is a result of the abnormality diagnosis unit 112 diagnosing.
- FIG. 2 is an image of data represented by the abnormality analysis data 201 and the detailed state data 202.
- FIG. 206 is an example when the failure mode is a decrease in air pressure and the abnormality diagnosis result is an air leakage abnormality.
- the horizontal axis represents the failure detection time 207 and the state data string 203 is represented as a time-series graph (diagram). It is an example, and the air pressure of the brake is given as an example of the state data.
- An abnormality flag included in the state data string 203 can display state data in which an abnormality has occurred, as indicated by 208 (an abnormality flag ON is indicated by a cross).
- the moving object abnormality determination support system of the present invention can provide a failure mode, an abnormality determination result, and state data in association with each other, and extract an abnormality determination result for the failure mode. Making it easy. That is, for example, when a failure mode called air pressure drop is raised on a train, it is possible on the ground side to easily read similar cases in the past as a data string.
- FIG. 3 shows a processing flow of the abnormality occurrence prediction unit 115 of the ground system 102. Hereinafter, it demonstrates according to a process step.
- Step 301 (corresponding to S301 in the figure, the following step is abbreviated as S):
- the abnormality occurrence prediction unit 115 of the ground system 102 determines the failure mode and occurrence time at the occurrence of the failure of the mobile body (train 101) acquired by communication, and Read the status data of the latest device.
- S302 The failure mode data identical to the failure mode acquired in S301 is extracted from the abnormality analysis database 113 (data accumulated in the past; usually, there are a plurality as shown in FIG. 2).
- S303 The number of data of the same failure mode extracted in S302 is stored in the memory.
- S304 The process up to S312 is repeated for the number of data in the same failure mode.
- the processing up to S312 is performed for each piece of the accumulated state data B extracted.
- S305 The state data (state data A) at the time of failure occurrence is matched with the state data (state data B) extracted from the abnormality analysis database 113.
- the matching is a process of comparing the similarity of data.
- the state data to be matched data for a predetermined number of times before and after the state detection time is used.
- an inner product of vectors can be used. Taking the time series direction of the state data as a vector dimension and taking the inner product of the standardized state data A and state data B, the inner product takes a value between -1 and 1, and the value is 1. The closer it is, the more similar tendency is shown.
- This inner product is used as a matching rate.
- the similarity may be determined using a scale such as a correlation coefficient and a regression analysis determination coefficient.
- matching may be performed using data converted into the frequency domain by Fourier transform or the like.
- S306 The matching rate acquired in S305 is stored in the memory.
- S307 It is determined whether or not the matching rate is equal to or higher than a predetermined threshold value. If the matching rate is equal to or greater than the threshold, the process proceeds to S308, and if it is smaller, the process proceeds to S309.
- S308 If the matching rate is equal to or higher than the threshold, it is determined that the state data A and the state data B are similar, and is stored in the memory as “matching”.
- S309 If the matching rate is less than the threshold, it is determined that the state data A and the state data B are not similar, and is stored in the memory as “unmatching”.
- the reliability is calculated from the number of matching of the state data A with the state data B and the abnormality diagnosis result.
- the state data A is data up to immediately after failure detection
- most of the data to be matched is data up to immediately before failure detection. That is, the matching rate represents the degree of similarity up to the state data B immediately before the failure detection.
- the state data A can be predicted to be “no abnormality” or “abnormal” using the number of cases as an index of reliability.
- FIG. 4 shows a determination example of the abnormality occurrence prediction unit.
- FIG. 4 shows, as an example, a case where the brake air pressure decreases, 401 is state data of a case to be judged (“judgment case” and state data of a failure that occurred in the train 101), and 402 is an abnormality analysis.
- the state data shown here represents the same expression as the graph shown at 204 in FIG.
- Reference numeral 404 denotes a matching rate of the case 401 to the case 402, and reference numeral 405 denotes a matching rate of the case 401 to the case 403.
- the reliability that is the total result is indicated by 406.
- a case with a higher matching rate (95%) is adopted as the abnormality determination result, and the higher matching rate is used as an index of reliability.
- this failure mode is an example in which the air pressure has temporarily dropped when a failure is detected, but in the past cases, it is divided into “no abnormality” and “abnormal”, but the status data of the determination target case 401 is “”
- the matching rate with the status data “no abnormality” is high.
- the matching rate for “no abnormality” is high, and there is no matching rate for “abnormal”. It is a case that can do.
- FIG. 5 is an example of a determination support screen of the abnormality occurrence prediction unit.
- This screen is an example of a screen that is displayed on the monitor 116 on the ground system 102 side where the maintenance staff or the operation manager actually supports the judgment of abnormality determination with reference to the state data and past cases.
- the screen 501 includes information for assisting the judgment such as the failure mode 502, the occurrence time and the elapsed time 503, and the reference numeral 504 overlays the state data of the failure to be judged and the state data of the past case to be compared.
- Expressions 505 to 509 are state data of past cases.
- the order and display size are changed based on the degree of matching or the presence or absence of abnormality (in the example shown, the two state data with the higher matching rate are larger and the three with the lower matching rate are State data is shown small). Further, by selecting 505 to 509 as a comparison control, a function of evaluating on the same time series graph on the screen of 504 is given. In addition, a display function of reliability is provided in 510 so that various types of information can be referred to. An abnormality determination 511 button or an abnormality determination 512 button is provided, and a maintenance staff or operation manager makes a determination.
- FIG. 6 is an example of a screen of the moving body state monitoring device.
- a screen 601 illustrated in FIG. 6 is an example of a screen on which the driver confirms the failure mode and the abnormality determination result together with the reliability in response to the ground-side support result performed on the determination support screen illustrated in FIG.
- the screen 601 displays a failure occurrence time and elapsed time 602, a failure occurrence portion 603 of the train 101, and a failure mode 604.
- the screen 601 further has a function of displaying the abnormality determination result 605 of the ground side system 102 and its reliability 606, and supports the operation restart determination when a failure occurs based on various information.
- a function indicating confirmation 607 or rejection 608 is provided for the abnormality determination result on the ground side, and the ground system 102 is notified.
- the driver can make a determination to resume operation with high reliability.
- the cause of failure is analyzed on the ground side, and the obtained abnormality determination result is transmitted to the mobile unit.
- the cause of the failure can be notified to the mobile body system without delay.
- trains and railway vehicle operations have been mainly described as mobile objects.
- other abnormality diagnosis systems particularly online and offline mobile objects with limited data collection, for example, operation by operation managers. It can also be applied to ships, aviation, and mining machinery construction machinery, which are supported transportation services.
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Abstract
Description
本発明では、上記の課題に対して、故障発生の際に、移動体の状態データを地上側に送信し、地上側において過去の事例を参照するなどして故障から異常に繋がる可能性を適切に予測する高度な支援を行い、移動体を停止させるに至る誤検知となる確率を低下させて移動体の稼働率の向上を目指すものである。
S302:異常分析データベース113から、S301で取得した故障モードと同一の故障モードのデータ(過去に蓄積されていたデータ;通常、図2に示すように複数個存在する)を抽出する。
S303:S302で抽出した同一故障モードのデータ件数をメモリに記憶する。
S304:同一故障モードのデータ件数分、以下S312までの処理を繰り返す。即ち、抽出された蓄積状態データBの1件毎にS312までの処理を行う。
S305:故障発生時の状態データ(状態データA)と異常分析データベース113から抽出した状態データ(状態データB)をマッチングする。ここでマッチングとはデータの類似度を比較する処理である。マッチング対象とする状態データは、状態検知時刻を基準として前後所定の時刻数分のデータを用いる。マッチング処理として、例えばベクトルの内積を用いることができる。状態データの時系列方向をベクトルの次元として捉え、規格化した状態データA、状態データBの内積をとれば、その内積の値は-1から1までの間の値を取り、値が1に近いほど類似した傾向を示すこととなる。この内積をマッチング率とする。また、内積以外にも相関係数、回帰分析の決定係数等の尺度を用いて類似度を判定してもよい。また時系列データの代わりに、フーリエ変換等によって周波数領域に変換したデータを用いてマッチングさせてもよい。
S307:マッチング率が予め指定された閾値以上か否かを判定する。マッチング率が閾値以上であれば処理はS308に、小さければS309に進む。
S308:マッチング率が閾値以上であれば、状態データAと状態データBは類似していると判断し、「マッチング」としてメモリに記憶する。
S309:マッチング率が閾値未満であれば、状態データAと状態データBは類似していないと判断し、「アンマッチング」としてメモリに記憶する。
以上のS304以下の状態データBに対する処理は終了する。この結果、状態データAは、状態データBの1件毎に対して、「異常あり」と「マッチング」/「アンマッチング」、「異常なし」と「マッチング」/「アンマッチング」の4パターンのいずれかに分類できる。
S314:S313で求めた信頼度に基づき、状態データAに対する異常判定結果を出力する。
以上のような地上システムでの判定支援画面を備えることにより、保守員または運行管理者は迅速、かつ信頼度の高い異常判定を支援することができ、判断結果は異常判定結果、信頼度110として列車101に対して出力される。
102 地上システム 112 異常診断部
113 異常分析データベース 115 異常発生予測部
204 異常分析データベースのデータ例
501 地上システムでの判断支援画面例
601 移動体、列車での判断支援画面例
Claims (9)
- 移動体と地上システムとを含み、
前記移動体は、当該移動体に備える各種機器の状態を計測する計測装置と、前記計測装置が計測した前記各種機器の状態データを用いて故障発生を検知する状態監視装置と、前記地上システムに当該発生した故障の種類と故障発生時前後の前記状態データを送信し、前記地上システムからの異常判定結果を受信する通信装置とを備え、
前記地上システムは、前記移動体とデータを送受信する通信装置と、前記移動体の過去の故障の種類及び状態データを蓄積する蓄積部と、前記過去の故障の状態データを分析するとともに当該故障が異常であるか否かを判定した異常診断結果を出力する異常診断部とを備える、
移動体異常判断支援システムにおいて、
前記地上システムは、更に、
前記過去の故障の種類と前記異常診断部が出力した前記異常診断結果と前記状態データとを関連付けて記憶する異常分析データベースと、
前記移動体から送信された故障発生時の前記故障の種類及び前記故障発生時前後の前記状態データと前記異常分析データベースに記憶されている前記過去の故障の種類及び前記状態データとを対比して前記異常判定結果を出力する異常発生予測部と、を備え、
前記地上システムの前記通信装置は、前記異常判定結果を前記移動体に送信することを特徴とする移動体異常判断支援システム。 - 前記異常発生予測部は、前記移動体から送信された前記故障発生時の前記故障の種類と同一の故障の種類の前記状態データを前記異常分析データベースから抽出し、前記故障発生時の前記状態データと前記異常分析データベースから抽出した前記状態データとの類似度を算出し、前記類似度が高い前記状態データの異常診断結果、又はその集計値を異常判定結果として出力することを特徴とする請求項1記載の移動体異常判断支援システム。
- 前記異常発生予測部は、前記類似度が高い前記過去の故障の状態データの前記異常診断結果の集計値、抽出した同一の故障の種類の前記異常分析データベースの件数を元に信頼度を出力することを特徴とする請求項2記載の移動体異常判断支援システム。
- 前記異常診断結果が、異なる二つの傾向のいずれかとの前記類似度が高いとの結果であることに応答して、前記類似度を当該類似度に対応した前記各傾向についての前記信頼度の指標とすることを特徴とする請求項3記載の移動体異常判断支援システム。
- 前記異常診断結果が、異なる二つの傾向について前記類似度に実質的な差がないとの結果であることに応答して、前記各傾向について前記過去の故障の状態データに基づいて得られる出現頻度を前記信頼度の指標とすることを特徴とする請求項3記載の移動体異常判断支援システム。
- 前記異常診断結果が、異なる二つの傾向のいずれについても前記類似度が低いとの結果であることに応答して、前記類似度を当該類似度に対応した前記各傾向についての前記信頼度の指標とすることを特徴とする請求項3記載の移動体異常判断支援システム。
- 前記異常発生予測部は、前記異常判定結果を提示するモニタを備え、前記モニタに提示された前記異常判定結果に基づいて判断が下された最終的な異常判定結果を前記移動体に対して送信するための入力インタフェースを備えることを特徴とする請求項1記載の移動体異常判断支援システム。
- 前記移動体は、前記故障の種類と前記状態データを蓄積する状態データ記憶部を備え、前記状態データ記憶部に記憶された前記状態データを前記通信装置とは別のデータ伝送メディアを用いて地上システムに対して出力し、
前記地上システムは、複数の移動体の前記故障の種類及び前記状態データを蓄積し、蓄積した前記故障の種類及び前記状態データに基づいて前記異常診断結果を出力することを特徴とする請求項1記載の移動体異常判断支援システム。 - 前記移動体は、前記地上システムから受信した前記異常判定結果を提示するモニタを備え、提示された前記異常判定結果に基づいて最終的な運行可否判断が入力されるインタフェースを備えることを特徴とする請求項1記載の移動体異常判断支援システム。
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| GB201214932D0 (en) | 2012-10-03 |
| JP5416630B2 (ja) | 2014-02-12 |
| JP2011201336A (ja) | 2011-10-13 |
| GB2491291A (en) | 2012-11-28 |
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