JP2001287645A - Wireless information collecting device for rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless information collecting device for a rolling stock capable of positively performing data transmission between a terminal station and a central office with favorable work efficiency, without increasing wiring work cost, and without accompanying appearance deterioration. SOLUTION: In this device, information of a facility collected by the terminal station is data-transmitted to the central office for storing and saving it in the central office. The central office sends out time information, a serial number and a request-to-send to the terminal station by radio, and it stores the time information, the serial number, and the information of the facility sent by the terminal station into a storing part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for transmitting information data on various facilities collected at terminal stations attached to various facilities of railway vehicles without connecting the terminal stations and the central office by wiring. The present invention relates to a wireless information collection device for railway vehicles that is stored and stored in a central office.

[0002]

2. Description of the Related Art Information data in various facilities of railway vehicles is connected by a wire cable or an optical cable between a terminal station that collects information and a central office that stores and stores the collected information. I try to transmit.

[0003]

In a new railway equipment, a line between a terminal station for collecting information in the vehicle and a central station for storing and storing the information is systematically constructed when a new vehicle is manufactured for the equipment. It is connected by a cable such as a cable or an optical cable, so that reliable data transmission can be performed between the terminal station and the central office.

[0004] However, if a terminal station and a central office are to be installed in a vehicle in which a terminal station and a central office are not installed at the time of a new vehicle, the exterior and interior of existing equipment may be removed,
Wiring work must be performed by removing the gaps between the already installed facilities and equipment, which not only has a problem that the work efficiency is poor and the wiring work cost is increased, but also the appearance may be deteriorated.

[0005] Therefore, an object of the present invention is to improve the work efficiency and reduce the wiring work cost 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 in a new vehicle. 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 an increase in appearance and without lowering the appearance.

[0006]

SUMMARY OF THE INVENTION A feature of the present invention is to provide a railway vehicle wireless information collecting apparatus which transmits information on equipment collected by a terminal station to a central station and transmits the information to the central station. In the wireless information collection device for railway vehicles that stores and saves, the terminal station wirelessly transmits the information collected and stored from the equipment together with the time information and the serial number to the central station based on a wireless transmission request from the central station. The central office issues a transmission request together with the time information and the serial number to the terminal station by radio, and stores the time information, the serial number, and the equipment information sent from the terminal station in the storage unit. There is to be.

According to the present invention, even if a terminal station and a central station are not installed when a new vehicle is installed, the parent station H
By simply installing s and slave stations Sa and Sb to Sx as appropriate, the operation status of the equipment can be grasped without connecting these master stations and slave stations by wiring. Therefore, in a case where a terminal station and a central office are to be installed in a vehicle where the terminal office and the central office are not installed at the time of a new car, 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]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a wireless information collecting apparatus for a railway vehicle according to the present invention. FIG. 1 schematically shows a situation in which the device of the present invention is installed in a railway vehicle. In this railway vehicle, a terminal station and a central station are additionally installed in a vehicle in which a terminal station and a central station are not installed at the time of a new vehicle to constitute a wireless information collection device.

In FIG. 1, Pc1 is a leading vehicle of the connected vehicles, and Pc2 is a second vehicle. Also,
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 the master station Hs and slave stations Sa and Sb.
, The base station Hs and each of the slave stations Sa and Sb to Sx communicate by broadcast radio using the 2.4 Ghz band spread spectrum system.

The master station Hs is installed near the driver's cab, and the slave stations Sa and Sb to Sx are sensors that take in the operating status of various facilities disposed under the floor of each vehicle as electric signals by sensors. It is installed at an appropriate position convenient for the sensor wiring. The master station Hs captures the operation status of various facilities arranged near the cab as an electric signal with a sensor,
It also has a function as a slave station.

Next, referring to FIG. 2, the master station (central station) Hs
The hardware configuration of the slave stations (terminal stations) Sa and Sb to Sx will be described. Since the slave stations Sa and Sb to Sx have the same configuration, the slave station Sa will be described as a representative.

In order to omit a slave unit for collecting information on vehicle equipment near the master station Hs, the master station Hs
Has the function of a slave unit.

The master station Hs includes slave stations Sa, Sb to Sx.
A wireless unit 11 for communicating (transmitting, replying or receiving) with a clock, a clock (CLOCK) 12, and a processing unit (CPU) 1 for performing communication processing and information collection processing of vehicle equipment as a slave station.
3. A storage unit 14 having a built-in processing program for communication and information collection, a digital data input unit (Di) 16 for inputting digital data from a port 15 in the information collection of vehicle equipment as a slave station, and similarly, information on vehicle equipment. An analog data input unit (Ai) 18 for inputting analog data from the port 17 during collection, and a converter (A / D) 1 for converting analog data captured by the Ai 18 into digital data.
9 is provided.

The master station Hs is further provided with Di16 and Ai18.
(RAMa) 20, RAMa20 for temporarily storing information (collected data) of vehicle equipment taken in from
The collected data obtained by communication via the radio unit 11 with the collected data stored in the sub-stations Sa and the information of the vehicle equipment collected by the sub-stations Sa and Sb to Sx are transmitted to each of the sub-stations Sa and Sb to Sx (more details). The collected data storage unit (RAMb) 21 stores the data in a time series (along with time data) in each vehicle facility, and does not cause interference when the vehicle passes another vehicle set attached to each vehicle set. A group number setting unit (GNP) 22 is provided for setting a number to prevent interference even if a device having the same communication system is nearby. Further, a bus 23 connecting the radios 11 to GNP 22 and a collected data stored in the RAMb 21 in one operation of the train or one day of operation are connected to a cable after the operation, and a personal computer PM equipped with 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.

The slave unit Sa includes a radio unit 31 for communicating (transmitting, replying or receiving) with the master unit Hs, a clock (CLOCK) 32, and a processing unit for performing communication processing and information collection processing of vehicle equipment. (CPU) 33, a storage unit (ROM) 34 having 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 vehicle equipment information collection, Data input unit (Ai) 38 for inputting analog data from the port 37 in the information collection of Ai3
8, the analog data input unit (Ai) 38, A
A converter (A / D) 39 for converting analog data taken in by i38 into digital data is provided.

The slave station Sa is further provided with Di36 and Ai38.
A storage unit (RAMa) 40 for temporarily storing information (collected data) of the vehicle equipment taken from the server together with a collection location number (measurement lot number), and collects the data stored in the RAMa 40 in a time-series manner for each vehicle equipment. A collection data storage unit (RAMb) 41 for storing data (along with time data), a group for setting a number for preventing interference when the vehicle passes another vehicle formation as in the case of the master station Hs. Number setting unit (GNP) 42, and wireless units 31 to GNP42
Is 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.

The master station Hs and the slave stations Sa, Sb to Sx
Are the set times of CLOCKs 12 and 32 and GNPs 22 and 4
No. 2 has the same setting group number, and is matched during the startup process. Since the set group number is the same, the radio wave transmitted by another having the same communication system is not received, and the own group is set to (1).
Only the transmitted radio waves are taken in (within the train organization). A slave station number is assigned to each of the slave stations Sa, Sb to Sx, and the GN of each slave station Sa, Sb to Sx is assigned.
P42 is set. Therefore, when a transmission request is issued from the master station Hs, each of the slave stations Sa and Sb to Sx determines whether the request is for the own station based on the slave station number added to the transmission request, and performs appropriate communication. Do.

During operation of the train, the master station Hs is connected to each slave station Sa,
When data collection is completed from Sb to Sx, communication is performed once or during one day of train operation and data collection is continued without terminating the data collection.
When collecting information, the PUs 13 and 33 assign a serial number to the collected data, store the serial number in the RAMs 20 and 40 and the RAMs 21 and 41, and update the serial number every cycle. As will be described later, the serial number and the time data attached to the collected data indicate that the wireless communication between the master station Hs and each of the slave stations Sa and Sb to Sx is interrupted and the master station Hs is restored afterwards.
This is effective for accumulating collected data. It should be noted that data collection in the master station Hs is performed via the bus 23 instead of wirelessly.

The start-up process of the master station Hs and the slave stations Sa, Sb to Sx, the information collection process of vehicle equipment, and the end process will be described below with reference to FIG.

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 is activated by the slave stations Sa, Sb to Sx. After confirming the numbers, station numbers a, b to x are sequentially assigned. Each slave unit Sa, Sb
In Sx to Sx, the station numbers a and b to x assigned by the master station Hs are stored in the RAMa40. Then, the serial number is initialized, and the serial number after initialization and the time data of CLOCK 12 are transmitted to each of the slave stations Sa, Sb to Sx,
Serial number and CLOCK of each slave station Sa, Sb-Sx
32 time data are matched. Thereafter, the master station Hs and each of the slave stations Sa, Sb to Sx enter into communication processing.

The serial numbers and time data are stored in the respective RAMs 40a,
Is stored and updated.

In FIG. 3, the communications (1) to (n) are displayed, but the serial numbers correspond to the numerical values. That is,
The serial number is the master station Hs for communication and each of the slave stations Sa and Sb.
This is a number indicating the order of communication that is repeatedly performed in 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.

While the master station Hs and the slave stations Sa, Sb to Sx perform communication processing, the ports 15, 17, 35, 37
The operation status of the equipment in the vehicle is converted into an electric signal through the controller and is temporarily stored in the RAMs 20 and 40 in the form of digital data. At this 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.

The collection of information in the master station Hs by communication will be described in detail with reference to FIGS. FIG.
(C) shows an example in the master station, but the other slave stations S
The same communication is performed in the communication with a and Sb to Sx.

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.

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, the group number for the master station to confirm to the master station that it is the same group following the reply reply, and a confirmation of the number of communications. The collected data is transmitted together with the time data, and an end signal is added at the end.

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.

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. However, it is often the case that radio interference occurs and reception is not successful. Communication with each station is allotted for a certain period of time, and when the allocated time elapses, the end signal is given, so that communication with that station is terminated, and communication with the next station is shifted.

When the end signal is sent, the slave station side
The various data stored in 40 are transferred to RAMb, new data is collected, and RAMa is prepared for the next communication. When the master station Hs receives the end signal,
Update the slave unit number attached to the transmission request and issue a transmission request to the next slave unit. Then, the master station Hs accumulates the received data in the RAMb21 as shown in FIG.

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, a retry process is performed as shown in FIG. In addition. Since only the retry process is a software process, and the other is a sequence process as described above, the flow is not shown.

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 the data is stored in the RAMb21. Search for a location that has not been set up, and find a slave station number, serial number,
The time data is obtained, and a transmission request is issued to the corresponding slave station (step 102). Figure 3 shows the transmission and reception at that time.
This is performed in the same manner as (c) and (d). Upon receiving a reply from the slave unit 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, it starts a new communication. Therefore, the serial number is updated, and the master station Hs starts a new communication as shown in FIG. RAMa in the master station
20 is stored in the RAM b21.

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 a transmission request. When a reply cannot be received (timeout), the communication is terminated, the serial number is updated, and the next new communication is started.

Therefore, only when the reception is not possible even after the retry processing, a free space is created in the RAMb 21 of the master station Hs.

However, even if a vacancy is made in a certain communication, if there is no change in the same type of data stored in the RAMb 21 due to the reception before and after the communication, it can be treated as having no abnormality. . Such an analysis can be confirmed when driving the vehicle is completed and displaying the screen data of the personal computer or determining whether the personal computer contains an abnormal value.

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 the corresponding slave station is read. A transmission request may be issued to the device as a retry process, and the designated data may be transmitted to fill the space.

The transmission request issued by the master station Hs and the reply from the slave station shown in FIG. 3C are repeatedly sent to each other within the allotted time to divide and transmit the collected data from the slave station. You may make it do. 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. The load of the retry process executed at the same time can be greatly reduced.

As described above, the operation status of the equipment can be grasped without installing wires by connecting the master station Hs and the slave stations Sa, Sb to Sx as appropriate in the railway vehicle. Can be.

[0038]

As described above, according to the present invention,
In the case of installing a terminal station and a central office in the middle of a vehicle where the terminal office and the central office are not installed at the time of a new car, work efficiency is good, without increasing the wiring work cost and without lowering the appearance, Moreover, it is possible to obtain a railway vehicle wireless information collection device capable of reliably transmitting data between the terminal station and the central office.

[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 collected data storage unit (RAM) in a central station constituting the railway vehicle wireless information collecting apparatus shown in FIG. 1;
It is a figure showing the data accumulation situation in b).

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 ... Wireless unit 12, 32 ... Clock (CLOCK) 13, 33 ... Processing unit (CPU) 14, 34 ... Storage unit 15, 17, 25, 35, 37 ... Port 16, 36: Digital data input section (Di) 18, 38: Analog data input section (Ai) 19, 39 ... Converter (A / D) 20, 40 ... Storage section (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 to Sx: slave station (terminal station) Pc1, Pc2: vehicle

Continued on the front page F-term (reference) 5H161 AA01 DD21 GG02 GG03 GG04 JJ01 5K048 AA11 BA28 CA03 DA02 DB01 DC01 EB01 EB03 EB10 EB11 EB12 FA10 GC02 HA01 HA02

Claims (3)

[Claims] 1. A railway vehicle wireless information collection device for transmitting information collected by a terminal station in equipment to a central station and storing and storing the information in the central station, wherein the terminal station responds to a transmission request from the central station by radio. The information collected and stored from the equipment is transmitted to the central office wirelessly along with the time information and serial number based on the time information and the serial number. The wireless information collection device for a railway vehicle, wherein the time information, the serial number, and the information of the equipment sent from the storage device are stored in a storage unit. 2. The communication system according to claim 1, wherein when the communication with the terminal station is interrupted, the central station leaves the information storage area of the storage section blank after the time when the communication is interrupted. The transmission request is re-issued, and when the reception is restored, the time information when the communication was interrupted is transmitted to the terminal station together with the communication serial number, and the communication transmitted from the terminal station together with the serial number is interrupted based on the transmission. A wireless information collection device for a railway vehicle, wherein information on equipment after the time of the occurrence is stored in an information storage area of a storage unit which is blank due to interruption of communication. 3. The terminal device according to claim 1, wherein the central station issues a transmission request to each terminal station together with the station number of the terminal station, communicates with the terminal station, and communicates with the terminal station. After the time has elapsed, communication will be performed with the corresponding terminal station as the next station number with the allocated time, and after all the terminal stations have been communicated, the transmission request will be reissued to the terminal station where communication was interrupted A wireless information collection device for a railway vehicle, wherein after the re-communication, communication with a terminal station which is a starting point of the communication is started.