JP3581633B2 - Wireless information collection device for railway vehicles - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, information data on various facilities collected by terminal stations attached to various facilities of railway vehicles is transmitted without data connection between the terminal stations and the central office by wiring, and stored and stored in the central office. The present invention relates to a wireless information collection device for railway vehicles.
[0002]
[Prior art]
Information data in various facilities of railway vehicles should be connected between the terminal station that collects information and the central office that stores and saves the collected information by wire or optical cable to ensure reliable data transmission. ing.
[0003]
[Problems to be solved by the invention]
In new railway equipment, the terminal station that collects information in the vehicle and the central office that stores and saves the information are plannedly connected by wire cable or optical cable when manufacturing a new car for the equipment, Reliable data transmission can be performed between the terminal station and the central office.
[0004]
However, when installing a terminal station and a central office in a vehicle that does not have a terminal station and a central office at the time of a new vehicle, the exterior and interior of existing equipment may be removed or equipment and equipment already installed may be removed. Wiring work must be performed with the gaps removed, which not only has a problem that the work efficiency is poor and the wiring work cost is high, but also the appearance may be deteriorated.
[0005]
Therefore, an object of the present invention is to improve the work efficiency and increase the wiring work cost in a case where the terminal station and the central office are to be installed in a vehicle where the terminal office and the central office are not installed when a new vehicle is installed. It is an object of the present invention to provide a railway vehicle wireless information collection device capable of performing reliable data transmission between a terminal station and a central station without causing a reduction in appearance without causing any deterioration.
[0006]
The feature of the railway vehicle wireless information collection device of the present invention that achieves the above object is that the central station transmits time information, a serial number, and a station number of the terminal station to each terminal station sequentially by radio for a plurality of terminal stations. The terminal station issues a request and the terminal station transmits the collected information on the equipment wirelessly to the central station together with the time information and the serial number, and stores and saves the information at the central station. The station and each terminal station have a radio section for communicating data transmission at the respectively assigned time, and the central station has the following interruption after the allotted time when the communication with the communicating terminal station is interrupted. The terminal station communicates with the terminal station of the station number, and each terminal station has a collected data storage section for storing information collected from the facilities together with time information, and a transmission from the central station. A processing unit for transmitting information collected from the equipment stored in the collected data storage unit based on the request, together with time information and a serial number, to the central office, wherein the central office wirelessly communicates with the terminal station. Transmission request means for sequentially transmitting a transmission request to each terminal station together with the time information, the serial number and the station number of the terminal station, and an information storage for storing the time information, serial number and equipment information sent from each terminal station A storage unit having an area and time information sent from each terminal station and serial number and equipment information are stored in the information storage area of the storage unit. When the information storage area of the storage unit is left blank and communication with all terminal stations is completed, the information storage area left blank is searched to obtain time information, a serial number, and a station number of the terminal station. The transmission request is reissued to the terminal station where the communication was interrupted, and when the communication is restored, the time information at which the communication was interrupted is transmitted to the terminal station along with the serial number of the communication, and based on the transmission, the terminal is transmitted. Another object of the present invention is to provide a processing unit for storing equipment information transmitted from a station together with a serial number after the time at which communication was interrupted in an information storage area of a storage unit which is blank due to interruption of communication.
[0007]
According to the present invention, even if a terminal station and a central station are not installed at the time of a new vehicle, the master station Hs and the slave stations Sa and Sb to Sx are simply installed on the vehicle as needed, and these master stations are installed. The operation status of the equipment can be grasped without connecting the machine and the slave station with wiring. Therefore, in a case where a terminal station and a central office are to be installed in a vehicle in which the terminal office and the central office are not installed at the time of a new vehicle, the work efficiency is good and the appearance is reduced without increasing the wiring work cost. In addition, it is possible to provide a railway vehicle wireless information collection device capable of reliably transmitting data between a terminal station and a central station.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a wireless information collection device for a railway vehicle according to the present invention will be described based on the embodiment shown in the drawings.
FIG. 1 schematically shows a state in which the device of the present invention is installed in a railway vehicle. This railway vehicle has a wireless information collection device in which a terminal station and a central office are additionally installed in a vehicle in which a terminal station and a central office are not installed when a new vehicle is installed.
[0009]
In FIG. 1, Pc1 is a leading vehicle of the connected vehicles, and Pc2 is a second vehicle. Hs is a master station (central station) constituting the railway vehicle wireless information collecting apparatus of the present invention, and Sa and Sb are slave stations (terminal stations) constituting the railway vehicle wireless information collecting apparatus of the present invention. ), And the number x of slave stations is determined by the number of vehicles in the train set. A is a wireless antenna in the master station Hs and the slave stations Sa and Sb, and a broadcast radio between the master station Hs and the slave stations Sa and Sb to Sx is provided by the 2.4 Ghz band spread spectrum method. Communicate.
[0010]
The master station Hs is installed near the driver's cab, and each slave station Sa, Sb to Sx is a sensor that captures the operation status of various facilities arranged under the floor of each vehicle as an electric signal using a sensor. It is installed at a convenient and convenient position. The master station Hs also has a function as a slave station so that the operation status of various facilities disposed near the cab is captured as an electric signal by a sensor.
[0011]
Next, the hardware configuration of the master station (central station) Hs and the slave stations (terminal stations) Sa and Sb to Sx will be described with reference to FIG. Since the slave stations Sa and Sb to Sx have the same configuration, the slave station Sa will be described as a representative.
[0012]
In order to omit a slave station device for collecting information on vehicle equipment near the master station Hs, the master station Hs is also provided with a function of a slave station.
[0013]
The master station Hs communicates (transmits, replies or receives) with each of the slave stations Sa, Sb to Sx, a clock (CLOCK) 12, communication processing and information on vehicle equipment as slave stations. A processing unit (CPU) 13 for performing a collection process, a storage unit 14 having a built-in processing program for communication and information collection, and a digital data input unit (Di) for inputting digital data from a port 15 in information collection of vehicle equipment as a slave station. 16) Similarly, an analog data input section (Ai) 18 for inputting analog data from the port 17 in the information collection of vehicle equipment, and a converter (A / D) 19 for converting analog data fetched by the Ai 18 into digital data. Have.
[0014]
The master station Hs further includes a storage unit (RAMa) 20 for temporarily storing information (collected data) of the vehicle equipment taken from the Di16 and Ai18, the collected data stored in the RAMa20, and each slave station Sa, Collected data obtained by communicating the information of the vehicle equipment collected by Sb to Sx via the wireless unit 11 is chronologically (time data) for each slave station Sa, Sb to Sx (more specifically, for each vehicle equipment). Together with the collected data storage unit (RAMb) 21, which does not cause interference when passing by another rolling-stock set attached to each rolling-stock set (even if a unit having the same communication system is nearby) A group number setting unit (GNP) 22 for setting a number for preventing interference is provided. Further, a bus 23 connecting the radios 11 to the GNP 22 and a collected data accumulated in the RAMb 21 during one or one day of operation of the train are connected to a cable after the operation, and a personal computer PM having a display screen is used to analyze the condition of the vehicle equipment. It has an interface 24 and a port 25 to be provided.
[0015]
The slave station Sa communicates (transmits, returns, or receives) with the master station Hs, a clock (CLOCK) 32, and a processing unit (CPU) that performs a communication process and a vehicle facility information collection process. 33, a storage unit (ROM) 34 with a built-in processing program for communication and information collection, a digital data input unit (Di) 36 for inputting digital data from a port 35 in the collection of vehicle equipment information, and similarly, information collection of vehicle equipment Among them, an analog data input section (Ai) 38 for inputting analog data from a port 37, an analog data input section (Ai) 38 fetched by Ai 38, and a converter (A / D) for converting analog data fetched by Ai 38 into digital data. ) 39 is provided.
[0016]
The slave unit Sa is further stored in the storage unit (RAMa) 40 and the RAMa 40 for temporarily storing the information (collected data) of the vehicle equipment taken from the Di 36 or Ai 38 together with the collection point number (measurement location number). A collected data storage unit (RAMb) 41 for storing collected data in a time-series manner (along with time data) for each vehicle facility, which does not cause interference when the vehicle passes another vehicle formation like the master station Hs. A group number setting unit (GNP) 42 for setting numbers to be set, and a bus 43 for connecting the wireless units 31 to GNP 42 are provided. The master station Hs and each of the slave stations Sa and Sb to Sx have a power supply unit, but are not shown.
[0017]
The set time of the CLOCKs 12 and 32 and the set group number of the GNPs 22 and 42 are the same between the master station Hs and the slave stations Sa and Sb to Sx. Since the set group number is the same, the radio wave transmitted by another having the same communication system is not received, and only the radio wave transmitted by the own group (within one train organization) is captured. Like that. A slave station number is assigned to each of the slave stations Sa, Sb to Sx, and is set in the GNP 42 of each of the slave stations Sa, Sb to Sx. Therefore, when a transmission request is issued from the master station Hs, each of the slave stations Sa and Sb to Sx determines whether or not the request is for the own station based on the slave station number added to the transmission request, and performs appropriate communication. Do.
[0018]
During the operation of the train, the master station Hs makes a round of data collection from each of the slave stations Sa, Sb to Sx. In order to easily understand the repetition, the CPUs 13 and 33 assign a serial number to the collected data at the time of collecting the information, store the serial number in the RAMs 20 and 40 and the RAMs 21 and 41, and update the serial number every cycle. The serial number and time data attached to the collected data are collected by the master station Hs when the wireless communication is interrupted between the master station Hs and each of the slave stations Sa and Sb to Sx and then restored, as described later. Effective for data storage. It should be noted that data collection in the master station Hs is performed via the bus 23 instead of wirelessly.
[0019]
Hereinafter, the start-up processing of the master station Hs and the slave stations Sa, Sb to Sx, the information collection processing of vehicle equipment, and the end processing will be described with reference to FIG.
[0020]
In the start-up process shown in FIG. 3A, when the master station Hs and the slave stations Sa, Sb to Sx are activated, the master station Hs checks the numbers of the slave stations Sa, Sb to Sx. Then, station numbers a, b to x are sequentially assigned. In each of the slave stations Sa, Sb to Sx, the station numbers a, b to x assigned by the master station Hs are stored in the RAMa40. Then, the serial number is initialized, the serial number after initialization and the time data of CLOCK 12 are transmitted to each of the slave stations Sa, Sb to Sx, and the serial number of each of the slave stations Sa, Sb to Sx and the time data of CLOCK 32 are sent. Match. After that, the master station Hs and the slave stations Sa, Sb to Sx enter into a communication process.
[0021]
The serial number and time data are stored and updated in the respective RAMs 40 of the slave units Sa and Sb to Sx.
[0022]
In FIG. 3, the communication (1) to (n) are displayed, and the serial numbers correspond to the numerical values. That is, the serial number is a number indicating the order of communication that is repeatedly performed by the master station Hs of communication and each of the slave stations Sa and Sb to Sx. The communication processes shown in (1) to (n) are performed between the master station Hs and the slave stations Sa and Sb to Sx following the communication in the master station as shown in FIG. A retry process is performed at the end, and this is a single communication, and the same communication process is repeated n times, and the process ends.
[0023]
While the master station Hs and the slave stations Sa, Sb to Sx perform communication processing, the operation states of the facilities in the vehicle are converted into electric signals via ports 15, 17, 35, and 37, and are taken in the form of digital data. The data is temporarily stored in the RAMs 20 and 40. At that time, the serial number and the time data are attached to the digital data for backup. The amount of data temporarily stored in the RAMs 20 and 40 is the amount collected (fetched) from the equipment during one communication.
[0024]
Now, collecting information in the master station Hs by communication will be described in detail with reference to FIGS.
FIG. 3C shows an example in the master station, but the same communication is performed in communication with the other slave stations Sa and Sb to Sx.
[0025]
First, a transmission request is issued from the master station Hs. Since a station number to be replied is attached to this request, even if a transmission request is received, no reply is made except for the same station number. As will be described later, when the communication with the communicating station is completed, it is updated to the next station number.
[0026]
Subsequent to the transmission request from the master station Hs, the group number, serial number, and time data are transmitted. Then, on the requested slave station side, after replying to the master station, a group number for causing the master station to confirm that it is in the same group, and for confirming the number of communications. The collected data is transmitted together with the time data, and an end signal is added at the end.
[0027]
The collected data is composed of digital (signal) data bytes, analog (signal) data digitized bytes, and spare bytes, as shown in FIG. The spare byte is provided as a spare in anticipation that a sensor will be added to the equipment at a later date, and that data for transmitting the operation status to the master station Hs will be generated. Digital (signal) data and analog (signal) data are each assigned a measurement location number, but are omitted in FIG.
[0028]
The various data being sent back from the slave station to the master station Hs may be continued to be successfully received by the master station, but it is often the case that radio interference occurs and reception is not successful. Communication with each station is allotted a fixed time, and after the allotted time, the termination signal is given, so that communication with that station is terminated and communication is shifted to the next station.
[0029]
When the end signal is transmitted, the slave station transfers various data stored in the RAMa 40 to the RAMb, collects new data, and prepares the RAMa for the next communication. Upon receiving the end signal, the master station Hs updates the slave station number attached to the transmission request and issues a transmission request to the next slave station. Then, the master station Hs accumulates the received data in the RAMb21 as shown in FIG.
[0030]
Then, as shown in FIG. 3 (b), the communication with the slave station is sequentially performed, and when the communication with the last slave station x is completed, the retry process is performed as shown in FIG. In addition. Only the retry process is a software process, and the other is a sequence process as described above.
[0031]
Now, as shown in FIG. 5, a timer is started to perform this retry processing within a predetermined time (step 101), and the radio wave is cut off while the master station Hs is communicating with the slave station, and no data is stored in the RAMb21. A location is searched for, a slave station number, a serial number, and time data of a place where the space is available are obtained, and a transmission request is issued to the corresponding slave station (step 102). The transmission and reception at that time are performed in the same manner as in FIGS. When the master station Hs receives a reply from the slave station specified in the retry process (step 103), the master station Hs stores the data specified by the time data from the reply in a blank space of the RAMb. Then, a receiving process for giving continuity of collected data is performed (step 104).
The retry process also has an end signal. When the master station Hs receives the end signal, the master station Hs enters a new communication. Therefore, the serial number is updated, and the master station Hs starts a new communication as shown in FIG. The data in the RAMa20 in the master station is stored in the RAMb21.
[0032]
If there is no reply, it is determined whether it is within the time allotted for retry processing (step 105), and if it is within that time, the process returns to step 102 to repeatedly issue the transmission request and still receive the reply. If not possible (in the case of timeout), the communication is terminated, the serial number is updated, and the next new communication is started.
[0033]
Therefore, only when the reception is not possible even after the retry processing, the RAMb21 of the master station Hs becomes available.
[0034]
However, even if an empty space is created in a certain communication, when there is a reception in the preceding and following communication and there is no change in the same type of data stored in the RAMb21, it can be treated as having no abnormality. Such analysis can be confirmed when, after driving the vehicle, the screen data of the personal computer is displayed or the personal computer is determined whether or not an abnormal value is included.
[0035]
Further, when the termination process is performed, all vacancies in the RAMb21 of the master station Hs are searched, and if a vacancy is detected, the corresponding slave station number, serial number, time data, etc. are read out and retried to the corresponding slave station. As a process, a transmission request may be issued, and designated data may be transmitted so as to fill the space.
[0036]
The transmission request issued by the master station Hs and the reply from the slave station in FIG. 3 (c) are repeatedly sent to each other within the allotted time so that the slave station can divide and transmit the collected data. You may. Then, the transmission request issued during this communication has the same effect as the transmission request of the retry processing, and when the communication is temporarily interrupted, the space in the RAMb 21 is greatly reduced, and the end of the communication is terminated. Can be greatly reduced.
[0037]
As described above, it is possible to grasp the operation status of the equipment without merely connecting the master station Hs and the slave stations Sa and Sb to Sx to the railcar without wiring.
[0038]
【The invention's effect】
As described above, according to the present invention, in a case where a terminal station and a central office are to be installed from the middle of a vehicle in which a terminal station and a central office are not installed at the time of a new vehicle, work efficiency and wiring work cost are improved. Thus, it is possible to obtain a railway vehicle wireless information collection device capable of reliably transmitting data between a terminal station and a central office without causing an increase in the appearance and without a reduction in appearance.
[Brief description of the drawings]
FIG. 1 is a diagram schematically showing a situation where a wireless information collection device of the present invention is installed in a train.
FIG. 2 is a diagram showing hardware of a central station and a terminal station which constitute the railway vehicle wireless information collection device shown in FIG. 1;
FIG. 3 is a diagram showing a communication situation between a central station and a terminal station which constitute the railway vehicle wireless information collection device shown in FIG. 1;
FIG. 4 is a diagram showing a data accumulation state in a collected data accumulation unit (RAMb) in a central station constituting the railway vehicle wireless information collection device shown in FIG.
FIG. 5 is a diagram showing a retry processing state in communication between the central station and the terminal station shown in FIG. 3;
[Explanation of symbols]
11, 31: Radio unit 12, 32: Clock (CLOCK)
13, 33 ... processing unit (CPU)
14, 34 ... storage units 15, 17, 25, 35, 37 ... ports 16, 36 ... digital data input unit (Di)
18, 38... Analog data input unit (Ai)
19, 39 ... Converter (A / D)
20, 40 ... storage unit (RAMa)
21, 41 ... collected data storage unit (RAMb)
22, 42... Group number setting unit (GNP)
23, 43 Bus 24 Interface A Antenna Hs Master station (central station)
Sa, Sb-Sx: slave station (terminal station)
Pc1, Pc2 ... Vehicle

Claims (3)

For a plurality of terminal stations, the central station issues a transmission request to each terminal station sequentially with time information and a serial number and the station number of the terminal station by radio, and the corresponding terminal station collects information on the collected equipment together with the time information and the serial number in the central station. In a wireless information collection device for a railway vehicle, which wirelessly transmits data to a station and stores and stores the data in the central station,
The central station and each terminal station each have a radio unit for communicating data transmission at an allotted time, and the central station has an interruption of communication with the communicating terminal station after the allotted time elapses. It communicates with the terminal station of the next station number,
Each terminal station has a collected data storage unit for storing information collected from the equipment together with time information, and information collected from the equipment stored in the collected data storage unit based on a transmission request from the central station. With the time information and the serial number to the central office,
The central office transmits to the terminal stations wirelessly the time information, the serial number and the station number of the terminal station, and a transmission request means for sequentially issuing a transmission request to each terminal station, and the time information, the serial number and the time information transmitted from each terminal station. A storage unit having an information storage area for storing equipment information, and time information, a serial number, and equipment information sent from each terminal station are stored in the information storage area of the storage unit to interrupt communication. If there is, the information storage area of the storage unit is blanked after the time of interruption, and when the communication with all the terminal stations is completed, the information storage area blanked is searched for the time information, the serial number, and the terminal. Obtain the station number of the station, retransmit the transmission request to the terminal station where the communication was interrupted, and when the communication is restored, send the time information when the communication was interrupted to the terminal station together with the serial number of the communication. Then, based on the transmission, a process of storing the equipment information transmitted from the terminal station together with the serial number after the time when the communication was interrupted in the information storage area of the storage unit which is blank due to the interruption of the communication. A wireless information collection device for a railway vehicle, characterized by having a section. 2. The processing unit of claim 1, wherein the processing unit of the central office re-communicates with the terminal station in which communication has been interrupted at the allotted time, and the communication with the terminal station is restored in the re-communication. The transmission request is reissued from the central station until the communication is not restored within the allotted time, and the communication is terminated and the communication with the terminal station that is the starting point of the communication is started. Information collection device for railway vehicles. 2. The terminal according to claim 1, wherein the central station and each terminal station alternately and repeatedly send a transmission request and a reply in the communication at the assigned time, so that each terminal station collects information on the collected equipment. And transmitting data to the central office by dividing the information.

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