JP2011205852A - Operation information output method of each car apparatus in car train - Google Patents

Abstract

PROBLEM TO BE SOLVED: To output the operation information having much data volume to a car monitor without interfering with transmission of operation information of other apparatus.SOLUTION: The operation information output method includes outputting operation information of various apparatuses 2a to 2n installed in cars 1a to 1n to a car monitor 3 installed on a lead car 1a. The information having less volume of data for a shorter transmission time, therefor with no interference with transmission of the operation information of other apparatuses 2a to 2n even if it is transmitted on a steady basis, is transmitted to the car monitor 3 all the time. Meanwhile, such information that has much volume of data for longer transmission time, therefor interfering with transmission of the operation information of other apparatuses 2a to 2n in case it is transmitted at all times, is temporarily stored in the apparatuses 2a to 2n, and the information having much volume of data that has been stored is transmitted to the car monitor 3 only when a command is issued from the car monitor 3. Alternatively, a complex analysis is performed based on the information having much volume of data that has been stored, and then it is transmitted to the car monitor 3. Only by enhancing analyzing function by increasing a memory capacity of each apparatus with no additional facility, a detailed condition of cars can be obtained.

Description

  The present invention relates to a method for outputting operation information of devices installed in each vehicle to a collective information collecting device (hereinafter referred to as a vehicle monitor) installed in a leading vehicle in a knitted vehicle in which a plurality of railway vehicles are connected. It is.

  As shown in FIG. 8, each vehicle (each car) 1a... 1n of the railway vehicle includes various devices 2a... 2n such as various control devices such as a brake device and a VVVF device, a vehicle state monitoring device, and a safety device. is set up. The operation information of these devices 2a... 2n is detected by the vehicle monitor 3 in the leading vehicle 1a, and detected by the terminal stations 4b... 4n in the intermediate vehicle 1b. To the vehicle monitor 3. The vehicle monitor 3 displays and records such information, or transmits the information to the ground side so that the operation state of various devices 2a... 2n can be grasped during traveling (for example, Patent Document 1). .

  By the way, grasping the pass / fail status of each device is currently small in amount of data such as simple failure signals and simple analysis results that do not interfere with the transmission of operation information of other devices even if they are always transmitted. This is done by transmitting only information with a short transmission time such as a long sampling period.

  In view of effective utilization for equipment maintenance and the like, it is desirable to obtain more detailed information such as vehicle vibration data in addition to the above information to grasp the details. However, when more detailed information is transmitted, the amount of data increases, which hinders transmission of operation information of other devices. Therefore, further detailed information cannot be transmitted by the above method. Also, information that must be complicatedly analyzed cannot be transmitted.

  Therefore, when the amount of data increases, as shown in FIG. 9, dedicated analysis / detail data devices 6a... 6n, terminal stations 7b... 7n, a vehicle monitor 8 and a dedicated transmission line 9 are additionally installed. There was a need to do.

  However, when such dedicated analysis / detail data devices, terminal stations, and vehicle monitors are added, the hardware configuration becomes complicated, and it is necessary to secure a place for installation, which is a great cost burden.

Japanese Patent Laid-Open No. 61-231801

  The problem to be solved is that when the operation information of each vehicle device is output to the vehicle monitor of the leading vehicle, the operation information having a large amount of data that interferes with the transmission of the operation information of other devices is output. In this case, it is necessary to add dedicated equipment, a terminal station, and a vehicle monitor.

The operation information output method of each vehicle device in the knitted vehicle of the present invention,
In order to be able to output the operation information with a large amount of data to the vehicle monitor without interfering with the transmission of the operation information of other devices, without adding a dedicated device, terminal station, vehicle monitor,
A method of outputting operation information of various devices installed in each vehicle to a vehicle monitor installed in the leading vehicle,
Even if it always transmits, it does not interfere with the transmission of operation information of other devices, while the information with a small amount of data and short transmission time is always transmitted to the vehicle monitor,
If it is always transmitted, it will interfere with the transmission of operation information of other devices. Information with a large amount of data and a long transmission time is temporarily stored in each device, and only when there is a command from the vehicle monitor. The main feature is that information with a large amount of data is transmitted to the vehicle monitor, or is transmitted to the vehicle monitor after performing a complex analysis based on the stored information with a large amount of data.

  According to the operation information output method of each vehicle device in the knitted vehicle of the present invention, information with a small amount of data is transmitted from each device to the vehicle monitor as it is, while information with a large amount of data is temporarily stored in each device.

  Separately, only when there is a command from the vehicle monitor at the time of vehicle acceptance or the like, the stored information with a large amount of data is transmitted to the vehicle monitor, or a complicated analysis is performed based on the stored information with a large amount of data. Send to vehicle monitor after going.

  According to the present invention as described above, the detailed state of the vehicle can be transmitted to the vehicle monitor by simply increasing the memory capacity of the device and strengthening the analysis function, and without installing additional equipment. It will be possible to grasp the state.

  In the present invention, information with a large amount of data transmitted to the vehicle monitor is, for example, vehicle vibration data of time history, vehicle angular velocity data, vehicle load / stress data, and voltage / current value data. The vehicle referred to here includes various parts of the vehicle body, carriage, wheel shaft, etc. (including devices mounted on them). In addition, when the amount of data is small and the amount of data per unit time is evaluated, it is necessary to consider the communication between the terminal station and other devices and the terminal station and the vehicle monitor. Data that requires transmission at a communication speed of 1 Mbps or higher in one-to-one communication with a device is almost applicable.

  The complex analysis based on information with a large amount of data transmitted to the vehicle monitor is, for example, maximum value analysis, minimum value analysis, average value analysis, mean square analysis (RMS value analysis), standard deviation analysis, etc. Numerical analysis processing including wave analysis, frequency analysis processing including envelope analysis, ride comfort analysis processing including round analysis, and frequency distribution analysis processing including rainflow analysis. The complicated analysis mentioned here includes both analysis that is simple but has a large amount of data, and that the analysis is burdened, and that analysis is complicated and that the analysis is burdensome.

  In the present invention, information with a large amount of data is temporarily stored in each device, and only when there is a command from the vehicle monitor, the stored information or a result of a complex analysis based on the information is transmitted to the vehicle monitor. Therefore, it is only necessary to enhance the analysis function by increasing the memory capacity of each device without adding equipment.

It is a figure explaining the installation structure which implements the method of outputting the operation information of each vehicle apparatus of this invention to a vehicle monitor. It is the figure which showed the relationship between the vehicle speed which is one of the operation information detected by the apparatus, and the axle box temperature. It is the figure which showed the waveform of the vibration of the vehicle which is one of the operation information detected by the apparatus, (a) is the vibration waveform of No. 2 cart, (b) is the vibration waveform of No. 1 cart. (A) (b) is the figure which frequency-analyzed the vibration waveform of FIG. 3 (a) (b). It is the figure which showed the waveform of the vibration of the vehicle body which is one of the operation information detected by the apparatus. It is the figure which frequency-analyzed the vibration waveform of FIG. It is a flowchart explaining the structure of the principal part of this invention. It is a figure explaining the method of outputting the operation information of each conventional vehicle apparatus to a vehicle monitor. It is a figure explaining the case where the information with much data amount is transmitted in the method of outputting the operation information of each conventional vehicle apparatus to a vehicle monitor.

  The purpose of the present invention is to output operation information with a large amount of data to the vehicle monitor without causing any trouble in transmitting operation information of other devices. This was realized by transmitting to the vehicle monitor only when there was a command.

  Hereinafter, the operation information output method of each vehicle device in the knitted vehicle of the present invention will be described with reference to FIGS.

  In the trained vehicle, the operation information of the various devices 2a ... 2n installed in the vehicles 1a ... 1n is obtained. The leading vehicle 1a is directly connected to the vehicles 1b ... 1n other than the leading vehicle 1a via the terminal stations 4b ... 4n. Are constantly output to the vehicle monitor 3 installed in the vehicle, and based on these pieces of information, the operating states of the various devices 2a.

  Conventionally, as this operation information, even when the vehicle speed changes as shown in the upper diagram of FIG. 2, there is no abrupt change as shown in the lower diagram of FIG. 2, and there is no need for fine sampling. Only data with a short transmission time, such as temperature, were output per unit time.

  On the other hand, the vibration of the vehicle shown in FIG. 3 and the vibration of the vehicle body shown in FIG. 5 change suddenly unlike the axle box temperature shown in FIG. The amount of data increases. When such operation information having a large amount of data is output from the device to the vehicle monitor, communication between the vehicle monitor and another device is hindered. Therefore, conventionally, such a large amount of operation information has not been output to the vehicle monitor.

  However, if data having a large amount of data per unit time, such as data relating to vehicle vibrations and vehicle body vibrations, can be sent to the vehicle monitor, the operation status of each device can be determined in more detail.

  Therefore, the inventors have established the present invention described below in order to make it possible to determine in more detail the operation status of each device 2a.

  That is, according to the present invention, information that has a small amount of data and a short transmission time, such as the temperature of the axle box, does not hinder the transmission of operation information of the other devices 2a. Always send to. This is the same as the conventional method.

  On the other hand, information having a large amount of data and a long transmission time, such as the vibration of the vehicle and the vibration of the vehicle body, is temporarily stored in each device 2a.

  For example, when there is a time when the vehicle is stopped or when the vehicle is inspected, if the vehicle monitor 3 receives a transmission command for information with a large amount of data stored in the corresponding device 2a... 2n, the device 2a. Then, the stored large amount of information is transmitted to the vehicle monitor 3 (see FIG. 7).

  By the way, in the case of the vehicle vibration waveform shown in FIG. 3 or the vehicle body vibration waveform shown in FIG. 5, the vehicle state can be determined to some extent depending on the magnitude of the waveform. It is often difficult to make a decision. In such cases, data analysis is often performed.

  For example, FIGS. 4 (a) and 4 (b) are obtained by frequency analysis of the vibration waveforms shown in FIGS. 3 (a) and 3 (b). 3A and 3B, it is considered that there is not much difference between the two vibration waveforms. However, when FIGS. 4A and 4B are analyzed by frequency analysis, the difference between them is clear.

  3 and 4 show data of devices installed on different carts. For example, when comparing vibration waveforms after a certain period for the same device, both frequencies can be determined even if it can be determined that maintenance is not necessary. If the analysis result has changed, it can be determined that maintenance is necessary. In other words, it may not be possible to make an accurate judgment just by looking at the data.

  FIG. 6 shows a frequency analysis of the vibration waveform shown in FIG. Even if it seems that there is not much change in time from the vibration waveform of FIG. 5, the frequency characteristic is extracted in FIG. 6 and it is possible to clarify what kind of vibration.

  Analysis of such data is heavy and cannot be performed in parallel during normal processing of the device. Even if it is possible, it costs money. Therefore, in the present invention, these detailed data are basically recorded on the device itself. When necessary (usually, when the vehicle is not traveling), analysis is performed by an analysis command from the vehicle monitor, and the result data is transmitted to the vehicle monitor (see FIG. 7).

  In this way, the capacity of the memories 2aa... 2na of the respective devices 2a... 2n is increased as compared with the conventional one and the analysis function is strengthened. More detailed operation status can be grasped and used for equipment maintenance.

  Information with a large amount of data to be transmitted to the vehicle monitor in the present invention is not limited to the vehicle vibration data of the time history described above, but also includes vehicle angular velocity data, vehicle load / stress data, and the like.

  Further, complicated analysis based on information with a large amount of data transmitted to the vehicle monitor is not limited to the frequency analysis, but includes maximum value analysis, minimum value analysis, average value analysis, RMS value analysis, standard deviation analysis, and the like. Also included are frequency analysis processing including numerical analysis processing, wavelet analysis, envelope analysis, riding comfort analysis processing including round analysis, frequency distribution analysis processing including rainflow analysis, and the like.

  The present invention is not limited to the above example, and it goes without saying that the embodiment may be appropriately changed within the scope of the technical idea described in each claim of the present invention.

  For example, when the vehicle monitor also records travel route / car information / point information / speed information / time information, as shown in FIG. 7, by specifying the travel point section on the travel route from the vehicle monitor, Each device may transmit the analysis result of the travel point section to the vehicle monitor. Alternatively, detailed data of the travel point section may be transmitted to the vehicle monitor.

1a Lead vehicle 1b, ... 1n Vehicle 2a, ... 2n Equipment 2aa ... 2na Memory 3 Vehicle monitor 4b ... 4n Terminal station 5 Communication line

Claims (4)

A method of outputting operation information of various devices installed in each vehicle to a collective information collecting device installed in the leading vehicle,
Even if it is always transmitted, it does not interfere with the transmission of operation information of other devices, information with a small amount of data and a short transmission time is always transmitted to the collective information collection device,
If transmission is always performed, it will interfere with the transmission of operation information of other devices, information with a large amount of data and a long transmission time is temporarily stored in each device, and only when there is a command from the collective information collection device, In a knitted vehicle characterized in that information with a large amount of stored data is transmitted to a collective information collecting device, or a complicated analysis based on the information with a large amount of stored data is transmitted to a collective information collecting device Operation information output method for each vehicle device.   2. Each vehicle device in a knitted vehicle according to claim 1, wherein the information with a large amount of data transmitted to the collective information collection device is vehicle vibration data of time history, vehicle angular velocity data, vehicle load / stress data. Operation information output method.   Complex analysis results based on a large amount of data to be transmitted to the collective information collection device are maximum value analysis, minimum value analysis, average value analysis, mean square analysis, standard deviation analysis, frequency analysis, ride comfort analysis. The operation information output method for each vehicle device in the knitted vehicle according to claim 1, wherein the method is a result of performing one or more of frequency distribution analyses. When the collective information collection device also records travel route / car information / point information / speed information / time information,
Each device transmits an analysis result of the travel point section or detailed data of the travel point section to the collective information collection device side by specifying a travel point section on the travel route from the collective information collection device. The operation information output method of each vehicle apparatus in the formation vehicle in any one of Claims 1-3.

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