JP2000201401A - Confirming method for record of group of data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform safe running by confirming rapidly whether or not a data being a key in the running of a car is a normal one. SOLUTION: A soft ware processing part 43 is composed of a key data retrieving part 44 for retrieving a key data 120, a key data confirming part 48 for confirming the key data 120 by a tester 30, and a communication controlling part 49 for driving a railway car 60 or reporting part 47 by a confirmation result of the confirming part 48. A data inputting part 46 is connected to the controlling part 45 of a control system 10, and records the key data 120 inputted from the inputting part 46 in a recording medium 20 by a control signal from the controlling part 45. Consequently, an object for control is controlled rapidly on the basis of the key data 120 recorded in the recording medium 20. Besides, running control of the railway car 60 is smoothened, and safety and reliability of running are enhanced as the key data 120 is always held without erasing the key data 120, even when power fails down, since the key data 120 is always held in the recording medium.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data group recording confirmation method for confirming the existence of data serving as a specific key in a recorded data group so that recording of the data group is completed.

[0002]

2. Description of the Related Art A recording medium includes a random access memory (RAM).
There is a readable / writable memory such as emorry, but the data written to the RAM when the power is turned off is lost. For this reason, the data recorded in the RAM is not erased by using the backup power supply. The recording medium includes a read-only memory such as a ROM (Read Only Memory). Data to be read from the ROM is fixed and shipped in advance at a factory where the ROM is installed (mounted) in a specific device. In addition, the storage medium includes
EEPROM (Electrically Erasable Programmable R)
There is a read-only memory that can be rewritten by an electric signal called a flash memory (OM).

[0003]

In order to confirm the success or failure of data recorded on a conventional recording medium, for example, after recording a data group on a recording medium, it is determined whether each data is correct. Must be checked individually using a test device, which may take time.

[0004] For example, when sequentially checking recorded data using a parity check method or the like, it takes a long time to perform such a check. As a result, if a railway vehicle or the like is controlled based on the recorded data, quickness is lacking. Sometimes.

An object of the present invention is to provide a data group recording confirmation method capable of promptly confirming whether or not key data in vehicle running is legitimate and improving security. It is in.

[0006]

According to one aspect of the present invention, there is provided a computer-readable recording medium comprising: a step of dividing a data group necessary for controlling a traveling of a vehicle into key data and general data; A step of recording data; a step of recording key data on a recording medium lastly; and a step of confirming whether a predetermined data group has been recorded on the recording medium. A step of searching for only the key data, a step of checking whether the searched key data is legitimate, and a step of checking whether the key data is legitimate. If it is determined that there is no key data, or if the key data is incomplete, the subsequent control is stopped.

When checking whether or not a predetermined data group has been recorded on a recording medium, instead of searching for the entire data group, it is searched for whether or not key data has been recorded from the data group. It is quickly confirmed whether the retrieved key data is legitimate, and if the key data is not found or is incomplete, the subsequent control is stopped.

According to a second aspect of the present invention, in the data group recording confirmation method according to the first aspect, the vehicle is a railroad vehicle, the general data is general data used for control in the railroad vehicle, and the key data is general data. It is characterized by consisting of the highest priority data having the highest importance from the middle.

In a railway vehicle, general data to be used for controlling the railway vehicle is determined, and the highest priority data having high importance is determined as key data from the general data, and the railway vehicle is quickly controlled based on the key data. Then, it is promptly checked whether or not key data at the time of traveling of the vehicle is legitimate, so as to further enhance traveling safety.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In the data group recording confirmation method of the present invention, the data group recorded to complete the data group recording is described. Check the existence of data that is a specific key.

FIG. 1 is a block diagram of a recording confirmation apparatus suitable for the data group recording confirmation method of the present invention. The control system 10 comprises a recording medium 20, a test device 30, a control device 40, and a drive device 50. The recording medium 20 and the control device 40 are connected to the bus line 130 via a bus, and record key data, which will be described later, on the recording medium 20 according to a control signal from the control device 40.

The control unit 40 includes a communication control unit 41 formed of a software program and a confirmation unit 42, and drives the test device 30 and the drive unit 50 by software processing. The test apparatus 30 tests whether key data described later to be recorded on the recording medium 20 is correct key data by a parity check method or the like. In addition, the driving device 50 drives a later-described brake or the like of the railway vehicle 60 by a driving signal.

FIG. 2 is a configuration diagram of the recording medium in the embodiment of FIG. 1. A plurality of data recording areas 20a are formed in the recording medium 20 in a slot shape. The data is recorded in the recording area 20a, and the key data 120 is recorded in the last data recording area 20a.
Write.

The general data 110 is general data used for control in a railway vehicle, such as an automatic train stop signal described later. The key data 120 is
This is the highest-priority data having a higher importance from the general data 110, and is, for example, a deceleration signal described later. As the recording medium 20 described above, ROM, R
The key data 120 is recorded in an EEPROM such as an AM or an EEPROM, particularly, a flash memory. Thus, the reliability of the key data 120 is ensured by preventing data loss of the key data 120 even at the time of power failure.

The recording medium 20 corresponds to the control unit 4 shown in FIG.
At the time of reading by a read signal from 0 to be described later, the key data 120 written last on the recording medium 20 is read first. As a result, by confirming only the key data 120, it is possible to quickly control the control target only by confirming that the key data 120 is correct. It should be noted that the data recording area 20a of the recording medium 20 is not limited to the illustrated one, but may be one that can be recorded hierarchically.

FIG. 3 is a configuration diagram of a data group recorded on the recording medium in the embodiment of FIG. 1. The data group 100 is divided into general data 110 and key data 120. The general data 110 includes an automatic train stop signal 111, an automatic train control signal 112, and an automatic train operation signal 113,
The key data 120 includes a deceleration signal 114, a caution signal 115, and a warning signal 116.

For example, the deceleration signal 114 of the key data 120 is the highest priority data among the automatic train stop signals 111 for automatically stopping the train, and similarly, the caution signal 115 of the key data 120 Is the highest priority data among the automatic train control signals 112, and the warning signal 116 of the key data 120 is the highest priority data among the automatic train operation signals 113 which are train operation signals. Is defined as Which signal is used as the key data 120 is determined in consideration of various circumstances.

FIG. 4 is a diagram showing the operation of the embodiment of FIG. 1 up to the search for specific data on the recording medium. Test signals 202 and 203 are input from the test device 30 to the confirmation unit 42 of the control device 40 shown in FIG. The test signal 202 is a signal for testing the general data 110, and the test signal 2
03 is a signal for testing whether or not the key data 120 is valid. The confirmation unit 42 identifies which data the data is, and sends confirmation signals 200 and 201 from the confirmation unit 42 to the recording medium 20. The confirmation signal 200 is a signal for confirming the reading of the general data 110, and the confirmation signal 201 is a signal for confirming the reading of the key data 120.

For example, when confirming the key data 120 from the confirming unit 42, the confirmation signal 201
Is searched for the key data 120 recorded in. Confirmation part 4
If the key data 120 cannot be retrieved even after sending the confirmation signal 201 from the recording medium 20 to the recording medium 20, it is determined that the recorded key data 120 does not exist on the recording medium 20, and the key data 120 is When the search can be performed, it is determined that the recorded key data 210 exists.

FIG. 5 is an operation diagram of the confirmation section of the embodiment of FIG. 1. The recorded key data 210 is reconfirmed from the search result of the recording medium 20 in FIG. That is, the confirmation unit 42 reconfirms that the recorded key data 210 matches the regular key data 120 by the coincidence confirmation 42a by software. The confirmation unit 42 confirms that the coincidence confirmation 42a is performed by software, and then issues a subsequent control instruction 212.

FIG. 6 is an operation diagram of the confirmation section of the embodiment of FIG. 1, and is for explaining the operation subsequent to FIG. The subsequent control instruction 212 from the confirmation unit 42 is performed by the control signal 213, and when the control signal 213 is input to the driving device 50, each device of the railway vehicle 60 operates.

As described above, each device of the railway vehicle 60 can be quickly controlled based on the key data 120 recorded on the recording medium 20. For example, in the case where data on the main recording medium (not shown) is deleted. Also, an EEPR as a flash memory described later in the recording medium 20
Since the contents of the key data 120 can be backed up by the OM, the stop control of the railway vehicle and the like can be smoothly performed.

FIG. 7 is a block diagram of another embodiment of the present invention. The difference from the embodiment of FIG.
2 in that the key data 120 is checked by the software processing unit 43 and the control unit 45 notifies the notifying unit 47 based on the check result of the key data checking unit 48.

The software processing unit 43 stores the key data 1
Key data search unit 44 for searching 20; key data 1
A key data confirmation unit 4 for confirming 20 with a test apparatus 30
8 and a communication control unit 49 for driving the railway vehicle 60 or the notification unit 47 according to the confirmation result of the key data confirmation unit 48. The data input unit 46 is connected to the control unit 45 of the control system 10 and records the key data 120 input from the data input unit 46 on the recording medium 20 according to a control signal from the control unit 45.

FIG. 8 is a flowchart for explaining the operation of another embodiment of the present invention. In this flowchart, step 100 is abbreviated as ST100, and the same applies hereinafter.

ST100: When controlling the running of the railway vehicle, necessary data groups are divided into key data and general data and transmitted to a recording medium. That is, when the general data 110 and the key data 120 are input from the data input unit 46 shown in FIG. 7, they are transmitted to the recording medium 20 by a control signal from the control unit 45.

ST110: Record general data on a recording medium. That is, in FIG. 7, the general data 110 is stored in the recording area of the recording medium 20 by the control signal from the control unit 45.
Record in order from.

ST120: Finally, key data is recorded on the recording medium. That is, in FIG. 7, the key data 120 is finally recorded in the recording area of the recording medium 20 by the control signal from the control unit 45.

ST130: Is there key data in the data group? . That is, in FIG. 7, the key data 120 in the recording medium 20 is searched by operating the key data search unit 44 of the software processing unit 43 according to a control signal from the control unit 45. When the key data 120 shown in FIG. 7 is included in the data group 100 shown in FIG. 3 (in the case of Yes), the key data search unit 44 determines whether or not the key data 120 is regular. The key data 120 shown in FIG. 7 is included in the data group 100 shown in FIG.
If there is no (No), the necessary data group 1 shown in FIG.
00 is the general data 110 and key data 120 shown in FIG.
And sends it to the recording medium 20.

ST140: Is the key data valid? . That is, in FIG.
In step 8, the test apparatus 30 checks whether the key data 120 is correct key data 120. More specifically, a check signal corresponding to the key data 120 is transmitted from the test apparatus 30.
0 is determined to be normal, and the driving device 50 shown in FIG.
, And if they do not match, it is determined that the key data 120 is not regular and the control is stopped.

ST150: The control is stopped. That is, in FIG. 7, when the key data confirmation unit 48 confirms that the key data 120 is not regular, the control unit 45 is operated.

ST160: Output an abnormality notification signal. That is, in FIG. 7, an abnormality notification signal 140 as a control signal from the control unit 45 is output.

ST170: The railway vehicle is driven by the driving device. That is, in FIG.
When it is determined in step 8 that the key data 120 is valid, the driving device 50 is driven by the control signal from the communication control unit 49 to drive the railway vehicle 60.

The processing is ended (terminated) as described above.
By performing the processing up to now, the railway vehicle 60 is quickly controlled based on the key data 120, and it is quickly confirmed whether or not the key data at the time of traveling of the railway vehicle is legitimate, Ensure driving safety.

FIG. 9 is a block diagram of another embodiment of the present invention, which differs from the configuration of FIG.
0 is different from the first embodiment in that the object of the drive device 50 is the brake 61. The case where the key data 120 is output from the data input unit 46 will be particularly described.

The nonvolatile RAM 24 of the recording medium 20 stores R
The AM 22 and the EEPROM 23 as a flash memory are connected by a memory line. The key data 120 is normally recorded at high speed in the RAM 22 as indicated by a dotted line. When the power supply (not shown) goes down, the key data 120 is recorded as backed up by the RAM 22 and the EEPROM 23 which is a flash memory connected to the memory line, as indicated by a dashed line.

FIG. 10 is a flowchart for explaining the operation in the configuration shown in FIG. ST200: Write key data to a recording medium. When the key data 120 is input from the data input unit 46 shown in FIG. 9, the data is written into the RAM 22 of the recording medium 20 via the control device 40 in a normal time, and the power is not recorded on the RAM 22 due to a power down or other reasons. If there is a risk of erasure, the key data 1 is stored in the EEPROM 23.
Record 20.

ST210: Is the Key Data Position Last? . For example, when the position of the key data 120 recorded in the EEPROM 23 shown in FIG.
), It is determined that the key data 120 has been successfully recorded in the EEPROM 23, and if the position of the key data 120 recorded in the EEPROM 23 is not the last position (N), the key data 1 is stored in the EEPROM 23.
It is determined that recording of 20 has failed.

ST220: Check the key data with a test device. For example, the key data 120 recorded in the EEPROM 23 shown in FIG. 9 is read in accordance with an instruction from the control device 40, and data having the same content as the key data 120 is sent to the control device 40 by the test device 30 to check whether both data match. Check if not.

ST230: Is key data correct? . For example, using the test device 30 shown in FIG. 9, the control device 40 checks whether both the key data 120 and the data output from the control device 40 match. In the control device 40 shown in FIG. 9, when it is determined that the key data 120 is correct (Y), the brake driving device 51 is driven, and when it is determined that the key data 120 is not correct (N), the key data 120 is determined. Enter again.

ST240: Operate the driving device. For example, when input from the data input unit 46 shown in FIG.
When the key data 120 recorded in the EPROM 23 is correct, the brake driving device 51 is operated by a control signal from the control device 40. Thereby, the key data 12
Thus, the brake driving device 51 can be driven based on 0.

ST250: Operate the brake. For example, the brake 61 is operated by a brake drive signal from the brake drive device 51 shown in FIG. As a result, the key data 12 recorded in the EEPROM 23 shown in FIG.
The control unit 40 confirms that 0 is the correct key data 120.
Since the brake 61 can be operated by the control of the brake driving device 51 only by confirming the above, the brake can be quickly braked.

ST260: Stop the railway vehicle. For example, the brake 61 can be applied by driving the brake driving device 51 based on the key data 120 recorded in the EEPROM 23 shown in FIG. For this reason, the key data 120 cannot be recorded in the main storage unit or the like (not shown). For example, even when the power is turned off, the data content of the key data 120 is not erased. Therefore, the brake can be quickly and reliably applied based on the key data 120, so that the running safety of a railway vehicle (not shown) can be secured.

ST280: Re-input the key data.
For example, in the control device 40 shown in FIG. 9, when the position of the key data 120 is not the last, the key data 120 is re-input. At this time, the key data 120 is written on the recording medium 20 again. The processing is stopped as described above. By performing the above-described processing, the brake 61 can be quickly and reliably braked based on the key data 120 recorded in the EEPROM 23 shown in FIG. Can be secured.

FIG. 11 is a configuration diagram of a recording medium according to a modified embodiment of the present invention. This recording medium is composed of a stack. When writing W, data (general data) is written in the direction of the arrow, and finally key data 120 is written. When the key data 120 is read and R is performed, the key data 120 is read with priority from the key data 120. Thus, writing and reading of the key data 120 can be performed quickly using the stack structure.

FIG. 12 is an operation diagram showing an example of braking a railway vehicle. In this operation diagram, when the railway vehicle 60 is stopped at the stop position, the data relating to the brake start position and the stop speed at which the braking is started are described in EEP shown in FIG.
By recording the key data 120 in the ROM 23 or storing the key data 120 in the main storage means (not shown), for example, the train control of the automatic train control device (ATC) can be performed quickly and smoothly. Further, even if an abnormality occurs in the key data 120 stored in the main storage means (not shown), the key data 120 recorded in the EEPROM 23 shown in FIG. 9 can be quickly backed up, thereby further improving the reliability of the ATC. be able to.

FIG. 13 is a diagram showing an example of key data in the railway vehicle of FIG. Key data 1 shown in FIG.
20 is, for example, data on the emergency brake pattern stop position. The vertical data is speed (km /
h) represents the stopping speed, and the data in the horizontal direction is the gradient (%) of the track. Starting from “0”, the slope indicates the degree of inclination from the starting point by “−”. For example, data (key data) relating to the emergency brake pattern stop position when the stop speed is "0" is $ 30, 30, 3
0,30,30,30,30,30 °, gradient “0” ~
This corresponds to the gradient “−35”. In addition, the stop speed “12 (km
/ H)], the key data relating to the emergency brake pattern stop position is $ 54, 59, 66, 72, 8
0, 80, 80, 80 °, for example, if the gradient is “−
When the speed is 10 "and the (stop) speed is 12 (km / h), the stop distance is 66 (m).

In the above-described embodiment, for example, in the control device 40, as in the test device 30 shown in FIG. 9, it is confirmed that the data has the same content as the key data 120, and the data input shown in FIG. Although it is confirmed that the key data 120 input from the unit 46 is correct, it is needless to say that the present invention is not limited to this.

[0049]

According to the present invention, the following effects are exhibited by the above configuration. According to the first aspect of the present invention, when checking whether a predetermined data group is recorded on the recording medium, the data group is searched for only whether or not particularly key data is recorded.
Quickly check whether the retrieved key data is legitimate, and if the key data is not found or is incomplete, stop the subsequent control to quickly control the target based on the key data. Can be controlled.

According to a second aspect of the present invention, the highest priority data having a higher importance is determined as key data from general data used for control of a railway vehicle, and the railway vehicle is promptly controlled based on the key data. By quickly checking whether the key data at the time of traveling is legitimate and always keeping the key data at the time of traveling of the railway vehicle in the storage medium, even if the power supply goes down, the key data Is not erased, and by keeping the key data at all times, the running control of the railway vehicle can be made smooth and the safety and reliability of running can be enhanced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a recording confirmation apparatus suitable for a data group recording confirmation method of the present invention.

FIG. 2 is a configuration diagram of a recording medium in the embodiment of FIG.

FIG. 3 is a configuration diagram of a data group recorded on a recording medium in the embodiment of FIG. 1;

FIG. 4 is an operation diagram until a search for specific data of a recording medium in the embodiment of FIG. 1 is performed;

FIG. 5 is an operation diagram of a confirmation unit in the embodiment of FIG. 1;

FIG. 6 is an operation diagram of a confirmation unit in the embodiment of FIG. 1;

FIG. 7 is a configuration diagram of another embodiment of the present invention.

FIG. 8 is a flowchart illustrating the operation of another embodiment of the present invention.

FIG. 9 is a configuration diagram of another embodiment different from the present invention.

FIG. 10 is a flowchart for explaining the operation in the configuration in FIG. 9;

FIG. 11 is a configuration diagram of a recording medium according to a modified embodiment of the present invention.

FIG. 12 is an operation diagram showing an example of braking of a railway vehicle.

FIG. 13 is a diagram showing an example of key data in the railway vehicle of FIG.

[Explanation of symbols]

10 control system, 20 recording medium, 23 EEPROM,
Reference numeral 30: test device, 40: control device, 60: railway vehicle (vehicle), 100: data group, 110: general data, 120
... key data.

Claims (2)

[Claims] 1. a step of dividing a data group necessary for controlling the running of a vehicle into key data and general data; a step of recording the general data on a recording medium; Recording data; and, when confirming whether a predetermined data group has been recorded on the recording medium, searching only for whether key data has been recorded from the data group. Confirming whether or not the obtained key data is legitimate, and stopping the subsequent control when it is determined that the key data is not found or the key data is incomplete during the confirmation. A method for confirming the recording of a data group, comprising: 2. The vehicle according to claim 1, wherein the vehicle is a railway vehicle, the general data is general data used for control in the railway vehicle, and the key data is high-priority data having high importance from the general data. 2. The data group recording confirmation method according to claim 1, wherein: