JP4737131B2 - Computer equipment, traffic signal controller - Google Patents

Description

  The present invention relates to a computer apparatus and the like that can set parameters using a text file that describes parameter values and that can retrieve the set parameter values as a text file, and in particular, traffic signal control used in a traffic control system. Related to the machine.

In a computer device having a file system, a file storing a plurality of parameter values is stored in a predetermined location in a storage device of the computer device, and the computer device or application software installed in the computer device is activated. Sometimes, a mechanism is used in which values of parameters described in the file are read and operated according to the read parameter values (see Patent Document 1).
At this time, by making the file into a text file format, it is possible to easily view and edit the parameter values using general-purpose editor software, which is advantageous for the user. There is.

On the other hand, embedded computer devices often do not have a file system, and generally a method of storing parameter values in a ROM (Read Only Memory) in a format other than text format is used.
Among such embedded computer devices, there is an interface for transmitting a text file (hereinafter referred to as a constant file) describing a combination of a parameter name and identification code to be set and its value from a maintenance personal computer or the like. There are some which can change the parameter setting according to the transmitted constant file.

Furthermore, in addition to the function that allows the setting to be changed by sending a constant file, some of the embedded computer devices include those for checking the current parameter setting values of the embedded computer device. Some of them have a function of retrieving a constant file in which is described in response to an external request.
Especially in the case of communication devices, advanced control devices, etc., there are a large number of parameters, and it is possible for the person in charge of operation to determine the optimal setting value by repeatedly changing these parameters used during operation. In many cases, it is necessary to store and confirm the final constant file of each device to be used for operation, and the function of taking out the constant file from these devices is extremely useful.

In recent traffic control systems, network systems using the Internet protocol (hereinafter referred to as IP) have become widespread in the network layer (third layer) of the so-called OSI (Open Systems Interconnection) reference model as a communication procedure ( Patent Document 2).
The UD transmission method is standardized as a communication method of the traffic control system, and the DATEX-ASN protocol is used for information exchange between devices related to system applications in the traffic control system. The details of the specifications such as the format and procedure in the UD transmission system are described in the standard document issued by the New Traffic Management System Association (hereinafter referred to as UTMS Association).

JP 2002-157159 A Japanese Patent No. 3456170

  When a maintenance worker who handles an embedded computer device having such a mechanism rewrites parameters in order to change the operating conditions of the computer device, the maintenance worker once extracts the constant file from the computer device to be maintained, In many cases, the method of sending the edited constant file to the computer device after performing an editing operation to rewrite only the setting value of the parameter to be changed in the constant file is used. When creating constant files for a plurality of identical computer devices at the same time, copy the necessary number of constant files created for a computer device using the above method, and only parameters with different setting values are copied. Repeat the process of rewriting and save constant files for multiple computer devices. Sometimes Umate created.

  Also, in case it becomes necessary to replace the computer device to be maintained with a spare computer device due to a failure or the like, a constant file is taken out from the computer device and stored in advance, and the replacement work is actually performed due to a failure or the like. In many cases, the stored compatibility file is transmitted to the spare computer device to ensure operational compatibility before and after replacement.

In this way, when setting parameters for a computer device, if a constant file of a different computer or a part of the constant file is rewritten, the parameter value that should not be changed should be changed by mistake. There is a problem of inducing the mistakes of maintenance workers.
This is because some parameters described in the constant file are assigned with unique setting values for the computer device. For example, information on the manufacturer and manufacturing location of the computer device, and information on a MAC (Media Access Control) address that is obliged to set a unique value all over the world at the time of factory shipment. Once these information are changed, the originally set values are not known, and if the values are not recorded separately, they cannot be restored.
Such a problem can also occur when a maintenance worker accidentally works using a constant file for a different computer device.

For such invariant parameters, a method of excluding the constant file from the description target is also conceivable. However, when information about the invariant parameters is to be obtained, there is a problem that the contents cannot be easily obtained.
Also, when changing a setting by sending a constant file to a computer device, the computer device determines whether the parameter included in the constant file is an invariant parameter and does not change the invariant parameter However, when the number of invariant parameters increases, there is a problem that it is necessary to modify the setting change software each time. Furthermore, since the receiving means that has received the constant file must first perform the process of determining whether it is invariable or variable for each parameter, there is a problem that the processing load increases. There is also a problem that if it becomes necessary to change an invariant parameter exceptionally, if a function that does not permit the change is implemented in software, it cannot be changed at all.

  The present invention has been made in view of such circumstances, and a computer capable of preventing change of an invariant parameter while maintaining its convenience when a parameter of a computer device is rewritten by transmitting a constant file from an external device. An object is to provide an apparatus.

The computer device according to the first invention exchanges a text file having a structure in which a parameter name or identification code whose value can be changed and a value thereof are described for each parameter type with an external device. The parameter is a variable parameter that needs to be changed according to a change in the installation location or network configuration of the computer device, and a unique setting at the time of manufacture or factory shipment. And an immutable parameter that is not allowed to be changed except for exceptional changes, and is described in the receiving unit that receives the text file having the structure from the external device, and the received text file A storage unit that stores the value of the parameter that has been set, and the storage unit that stores the value in response to a request from the external device A transmission unit that creates a text file having the structure and transmits it to an external device for the received parameter, and the reception unit includes a comment sentence included in the received text file and a sentence other than the comment sentence. An identifying means for identifying, a comment sentence discarding means for discarding the comment sentence, a setting value obtaining means for obtaining a parameter name or identification code and its value from a sentence other than the comment sentence, and a setting value obtaining means The parameter for which the value is acquired has parameter storage means for changing the setting to the acquired value and storing the parameter regardless of whether the parameter is an invariant parameter or a variable parameter, and transmission unit, among the parameters stored in the storage unit, the name or identification code of invariable parameters and their values comment Together to string together it is described as a comment, a text file creating means for creating a variable with the name or identification code of parameters for transmission text file that describes its value as a statement of non-comment statement (claim 1) .

The traffic signal controller, terminal router or optical beacon (collectively referred to as “traffic signal controller” hereinafter) used in the traffic control system according to the second invention is the same as the first computer device. It has a function (Claim 4).

According to the computer apparatus and the traffic signal controller and the like according to these inventions, since the value of the invariant parameter is included in the comment text of the text file, the text file is acquired in a different computer apparatus after obtaining the text file. Even when the message is transmitted, the value of the invariant parameter is not rewritten, and it can be avoided that the value cannot be restored. Even if the invariant parameter value of the text file is erroneously edited and transmitted, the value is not rewritten because it is a comment sentence. In addition, it is necessary to change the software of the receiving unit even if the types of invariant parameters have increased by providing the receiving unit with the function of discriminating whether or not it is a comment sentence and uniformly discarding the comment sentence. The software processing can be simplified. In addition, the operator who acquired the text file can immediately determine whether it is an invariant parameter or a variable parameter without referring to the operation manual, etc., so that it is possible to accurately distinguish which parameter should not be rewritten. become.

When exchanging the text file, it is preferable to use a file transfer protocol (FTP).
By using FTP, text files can be transmitted and received even at a location remote from the installation location of computer devices , traffic signal controllers, and the like . In addition, by using a highly versatile FTP, it becomes possible to exchange text files with any type of external device.

As the parameters of the invariant, for example, information of the MAC address of the communication device provided in the like the computer apparatus, traffic signal control apparatus, information indicating the manufacturer of such a computer device or a traffic signal controller, Ya the computing device information indicating the time of manufacture, such as traffic signal controller, information indicating the point of manufacture, such as the computing device, traffic signal control apparatus, information indicating the production conditions such as the computing device and a traffic signal controller, the computer device and traffic signals Information indicating the result of factory inspection such as a controller , or the IP address of a communication device that allows remote connection among communication devices such as the computer device or traffic signal controller, etc. Two or more of these may be included (claim 3).
Of these parameters, parameters other than the IP address of the communication device that permits remote connection are information inherent to the hardware itself such as a computer device, and therefore cannot be rewritten in principle. By including these in the comment text as invariant parameters in the text file, it is possible to prevent accidental rewriting.
In addition, the IP address of the communication device that permits remote connection can be avoided, in particular, when the constant file setting work is being performed remotely, so that the remote connection cannot be made after the change due to an incorrect change. become able to.

As described above, the computer system of the present invention, according to the traffic signal controller, etc., can be prevented when rewriting the parameters by sending a constant file from an external device, to change accidentally invariant parameters.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic diagram showing an outline of the configuration of a traffic system including a traffic signal controller 5 according to the present invention. FIG. 2 is a block diagram showing functional blocks of the traffic signal controller 5.

[Overall system configuration]
In the traffic control center, a signal control device 1, an information providing device 2, a central router 3, and a maintenance work device 7 are installed. On the road side, a terminal router 4, a traffic signal controller 5, and an optical beacon 6 are provided. is set up. The central router 3 and the terminal router 4 are connected by a communication line.
These devices are composed of a CPU for controlling the main body, a storage device such as a memory and a hard disk, and a serial communication device for communication. The functions of each device itself are software stored in the storage device, It is realized by various hardware.

The signal control device 1 communicates with the traffic signal controller 5 via the central router 3 and the terminal router 4, for example, gives instructions regarding control of the signal lamp (FIG. 2) controlled by the traffic signal controller 5. A function of receiving information related to the operation history of the traffic signal controller 5 is provided.
Similarly, the information providing apparatus 2 communicates with the optical beacon 6 via the central router 3 and the terminal router 4, for example, transmits traffic information for providing vehicles to the optical beacon 6, It has a function of receiving information such as travel time transmitted from the vehicle.

In this traffic system, communication between each device is performed by IP, and information exchange between the signal control device 1 and the traffic signal controller 5 and information exchange between the information providing device 2 and the optical beacon 6 are performed. Uses the DATEX-ASN protocol.
In addition, a maintenance work device 7 can be connected to the central router 3 of the traffic control center at any time, and the maintenance worker can control traffic signals from the maintenance work device 7 using protocols such as telnet and FTP. It can be connected to the machine 5 and the optical beacon 6 to perform maintenance work such as parameter confirmation / change remotely.

In the present embodiment, the maintenance work device 7 is an independent device, but the signal control device 1 or the like may be configured to hold the maintenance function of the maintenance work device 7.
The maintenance device 7 can be used by connecting to the terminal router 4 or the like on the terminal side, or can be directly connected to the traffic signal controller 5 for use. In other words, it may be connected anywhere as long as it can reach the device to be maintained on the network.

Here, in order to perform communication using the IP or DATEX-ASN protocol, it is necessary to set various parameters such as an IP address, a communication port number, and a domain name in each device, and then establish a communication session between the devices. Therefore, a lot of communication parameters must be set for each device.
Further, for example, in the case of the traffic signal controller 5, it is necessary to set parameters used for signal control.

[Configuration of traffic signal controller 5]
Next, the basic operation of the traffic signal controller 5 will be described with reference to FIGS. 2 and 3.
FIG. 3 is a block configuration diagram showing a detailed functional configuration of the communication control unit 8 included in the traffic signal controller 5.

The traffic signal controller 5 stores a communication control unit 8 for exchanging information with a central device such as the signal controller 1 and other adjacent traffic signal controllers (not shown). .
The communication control unit 8 receives the signal control command information as a basis for determining the display time of each signal lamp color of the signal lamp from the signal control device 1, or performs signal control of the traffic signal controller 5. The transmission unit 801 has a function of transmitting information indicating an operation history to the signal control apparatus 1 at predetermined intervals.
It also has a function of exchanging information on signal control and information on traffic volume measured by a vehicle sensor (not shown) with other adjacent traffic signal controllers.
These pieces of information are exchanged according to the procedure of the DATEX-ASN protocol.

The signal control plan creation unit 501 creates a signal control plan for each predetermined period (usually every cycle) based on the signal control command information, the signal control parameters stored in the signal control constant table 503, and the like. It has a function of storing in the signal control plan table 502.
Here, the signal control plan refers to the scheduled display time of each signal lamp color of the signal lamp.
Based on the signal control plan stored in the signal control plan table 502, the signal lamp control means 511 lights up each signal lamp color of the signal lamp.

[Constant file transmission / reception operation of communication control unit 8]
Here, the transmission / reception operation of the constant file by the communication control unit 8 will be described in detail.
FIG. 4 is an operation flow when the constant file is received from the maintenance work device 7, and FIG. 5 is an operation flow when the maintenance work device 7 requests transmission of the constant file.
FIG. 6 shows an example of a constant file.
First, the operation for extracting a constant file from the traffic signal controller 5 will be described with reference to FIG.

The communication control unit 8 of the traffic signal controller 5 operates an FTP daemon 841 for realizing the FTP server function, and constantly monitors whether there is an FTP connection request from an external device.
When a maintenance worker performs a predetermined operation on the maintenance work device 7 which is a personal computer and requests connection to the traffic signal controller 5 by a file transfer protocol (FTP), the request is accepted by the FTP daemon 841, Connection is established.
Then, the maintenance worker transmits an FTP file transfer request to the traffic signal controller 5 by inputting a get command or the like in the maintenance work device 7.

When the communication control unit 8 receives the file transfer request (step S201), the constant file creating unit 821 creates and opens an initialized constant file with empty contents (step S202). And the process which reads the parameter memorize | stored in the parameter table 831 one by one is performed (step S203).
Here, when the read attribute of the parameter is an invariant parameter, first, a character string indicating a comment sentence is written in the constant file (step S204).
Here, the character string indicating the comment sentence may be, for example, a character string combining a plurality of symbols and characters such as “/ *”, or “!” Or “#”. One symbol or the like may be used.
Then, after writing a character string indicating the comment sentence, the parameter name (which may be an identification code indicating the parameter) is written in a subsequent field, and then the parameter value is set. Fill in (step S205).
For example, if the parameter is the MAC address of a communication Ethernet (registered trademark) device included in the communication control unit 8, this parameter is an invariant parameter, so that “/ * MAC_ADDRESS 01.02.03.04.05.006 , Etc., the parameter name and its value are sequentially written following the character string “/ *” indicating the comment sentence, and finally a line feed character is written, and the processing relating to the parameter is terminated (step S206).

In this way, the series of operations shown in steps S203 to S206 are repeatedly executed for the number of parameters stored in the parameter table 831.
That is, a constant file in which a text sentence having the same number of lines as the number of parameters is created by a series of operations.
Then, the transmission unit 801 transmits the completed constant file to the maintenance work apparatus 7 according to the FTP procedure (step S207).
Note that the constant file may include statements other than the lines describing the parameters. For example, information on the device name and file creation date and time may be described at the beginning or end of the file. . In this case, these sentences are written as comment sentences.

Parameters stored in the parameter table 831 include the IP address and subnet mask assigned to each of one or a plurality of communication devices included in the traffic signal controller 5, and the DATEX-ASN protocol set for each partner for transmitting and receiving application data. There are various parameters such as port number, domain name, user name and password of the transport layer, and routing table information related to routing and link cost information when the communication control unit 8 has an IP routing function.
The parameter mentioned here is a variable parameter because the setting value of the traffic signal controller 5 needs to be changed at any time if the installation location or network configuration of the traffic signal controller 5 is changed.
However, the IP address and subnet mask of the communication device used to communicate with the central device such as the signal control device 1 cannot be remotely connected from the traffic control center once they are rewritten to incorrect values. It may be defined as an invariant parameter. If it is accidentally rewritten while working remotely, there is a risk that it will be necessary to go to the point where the traffic signal controller 5 is installed, and communicate with the central device. The IP address and subnet mask of the communication device used for this purpose may be set as invariant parameters.

On the other hand, among the parameters stored in the parameter table 831, the invariant parameters include information indicating the manufacturer of the traffic signal controller 5, information indicating the manufacturing time of the traffic signal controller 5, and manufacturing points of the traffic signal controller 5 , Information indicating the manufacturing conditions of the traffic signal controller 5, information indicating the result of factory inspection of the traffic signal controller 5, and the like.
Since these pieces of information are uniquely determined at the time of manufacture and factory shipment, they are parameters that are not allowed to be rewritten later by a maintenance worker or the like.
However, if a value different from the value originally set at the time of manufacture, factory shipment, or the like is set, the maintenance worker may exceptionally rewrite it according to the instruction.

  Next, the operation of transmitting a constant file to the traffic signal controller 5 and setting parameters in the traffic signal controller 5 will be described with reference to FIG.

Prior to the transmission of the constant file, the maintenance worker opens the constant file acquired by the procedure of FIG. 5 with a general-purpose text file editor or the like of the maintenance work apparatus 7 which is a personal computer, and confirms the contents. Then, a parameter to be changed is selected from the constant file, and the setting value of the parameter is edited and saved.
For example, when communication with the signal control device 1 is not normally started, the maintenance worker sequentially confirms parameter values related to communication with the signal control device 1. For example, when the value of the user name of the traffic signal controller 5 is incorrect among these parameters, the value is changed to a correct value. When all the values to be changed are edited, the contents of the constant file are fixed and saved, and the operation of the text file editor is terminated.

Then, the maintenance worker performs a predetermined operation and requests connection to the traffic signal controller 5 by a file transfer protocol (FTP). The request is accepted by the FTP daemon 841 of the communication control unit 8, and the connection between the maintenance work device 7 and the traffic signal controller 5 is established.
Then, the maintenance worker starts the transfer of the constant file to the traffic signal controller 5 by FTP by inputting a put command or the like in the maintenance work device 7.

When the communication control unit 8 receives the constant file (step S101), the comment sentence identifying / discarding unit 811 extracts a text sentence line by line from the top of the constant file (step S102), and adds a comment sentence to the text sentence. It is determined whether or not the indicated character string is included (step S103).
If a character string indicating a comment sentence (for example, “/ *”, “!”, Etc.) is included, the part following the character string in the text sentence of the one line is a comment sentence. It considers and discards (step S104).
In this case, the character string indicating the comment may be included not only at the beginning of the one-line text sentence but also in the middle. For example, if it is a text sentence such as “SUBNETMASK 255.255.255.0 / * Subnet mask is 24 bits”, only the part after the character string “/ *” is discarded, and the part before it is valid. It is treated as a thing.

Then, from the text sentence determined to be an effective part other than the comment sentence, the parameter name or identification code and its setting value are sequentially extracted (step S105), and the extracted setting value of the parameter is stored in the parameter table 831 ( Step S106).
In this way, the series of operations shown in steps S102 to S106 are repeatedly executed for the total number of lines in the constant file. That is, through this series of operations, all necessary parameter setting values can be extracted from all text sentences described in the constant file.

In addition, although the method of making the part after the character string which shows a comment the comment sentence was described here, the combination (for example, "/ *" and "* /" etc.) of predetermined character strings is determined, A method in which a portion surrounded by the combination is regarded as a comment sentence may be used.
For example, a method of describing a comment sentence such as “SUBNETMASK 255.255.255.0 / * Subnet mask is 24 bits * /” may be used.

[Mode of constant file transmission / reception by maintenance workers]
As a mode in which the maintenance worker performs the maintenance work by the transmission / reception operation of the constant file, several patterns are assumed.

The first case is a case where the parameter value is changed remotely from a remote place as described in the embodiment.
In this case, work must be continued with communication established with the remote location, so if you inadvertently change the IP address settings, you will be sent to the traffic signal controller 5 installation point. And take the risk of having to work.
Therefore, by applying the present invention, the IP address is treated as an invariant parameter, and a text sentence relating to the IP address is used as a comment sentence in the constant file extracted from the traffic signal controller 5, so that the maintenance worker mistakenly assigns the IP address. It becomes possible to prevent the change.
If the IP address is simply changed to the IP address of the same network segment, it is possible to connect remotely even after the change.
In the present invention, when it is necessary to change the IP address exceptionally when working remotely, "/ *" or the like added to the text sentence related to the IP address that is a comment sentence Since it is possible to easily change the setting simply by deleting the character string, it is very convenient.
As described above, even if the text sentence related to the IP address is changed to a sentence other than the comment sentence, if the constant file is taken out again from the traffic signal controller 5 after the maintenance work is completed, the text sentence is taken out as a comment sentence. Even if the constant file is erroneously transmitted to another traffic signal controller, there is no possibility that the IP address is rewritten.

In the second case, a maintenance worker creates a constant file for multiple traffic signal controllers that have some parameters set to the same value at one time, and then sends them to each traffic signal controller for setting. This is the case.
In this case, usually, one constant file is taken out from one traffic signal controller selected from the plurality of traffic signal controllers, and the constant file is copied to a plurality of files on the maintenance work device 7. Often, editing operations are performed in which parameters other than the parameters set to the same value are sequentially changed.
At this time, the selected one traffic signal controller 5 was manufactured by a contractor 10 years ago, but the other traffic signal controller 5 was manufactured this year by another contractor. In some cases, there is a risk that information regarding the manufacturer or information regarding the time of manufacture will be erroneously rewritten.
For example, in the constant file extracted from the selected traffic signal controller, the IP address with different settings and the communication parameters for the DATEX-ASN protocol have been edited, but the information regarding the manufacturer is noticed. Without being transmitted to other traffic signal controllers.
If the name of the manufacturer of this other traffic signal controller manufactured this year was not listed in the management book etc., specify when the device was manufactured by which supplier. Cause a serious problem of being unable to do so.
However, according to the present invention, invariant parameters such as the manufacturer's name in the constant file are described as comment sentences at the time of acquisition from the selected one traffic signal controller 5, so that Problems due to mistakes by maintenance workers can be avoided in advance.

In the third case, when the traffic signal controller 5 in which the maintenance worker fails is replaced with a spare traffic signal controller, the constant file previously taken out from the traffic signal controller 5 before the failure is spare traffic signal control. This is the case of setting by sending to the machine.
Also in this case, as in the second case, according to the present invention, the invariant parameters such as the manufacturer's name in the constant file are commented when taken out from the traffic signal controller 5 before the failure. Therefore, there is no need to worry about accidental rewriting by such work.
If the constant file is acquired from the spare traffic signal controller after the setting is completed, the values of all the parameters held by the spare traffic signal controller can be stored correctly.

In these three cases, in addition to the present invention, (1) a process for preventing rewriting of invariant parameters is implemented in the process of receiving a constant file and replacing the parameter value. (2) Traffic signal A method such as not to include invariant parameters in the constant file that can be acquired from the controller can be considered.
However, in the method (1), when the number of invariant parameters increases, there is a problem that the processing for rewriting the parameter value must be remodeled each time, and when the value of the invariant parameter is exceptionally changed. There is also a problem that it cannot be changed. For example, the information at the time of manufacture is erroneously the previous year's date.
In the case of the present invention, an exceptional work can be easily performed by sending a constant file after performing editing to delete a character string such as “/ *” written at the beginning of a sentence described as a comment sentence. It is also very useful.
In the method (2), there is a problem that it becomes impossible to confirm the manufacturer and the production point of the corresponding traffic signal controller by acquiring the constant file. In particular, it is often the case that the constant files of all traffic signal controllers are saved in a batch, and those constant files are read at once to create a list of traffic signal controller manufacturers and production points. This method makes it impossible to create such a list.
In that respect, according to the present invention, it is possible to create a list while acquiring information such as the manufacturer and the manufacturing time point described as a comment in the constant file.

  In the present invention, even if the number of invariant parameters increases, it is not necessary to change the contents of the constant file reception process in principle. Regardless of the increase in the number of invariant parameters, if the common processing of discarding the character string indicating the comment text is implemented in advance, it is not necessary to change the processing contents no matter how many types of invariant parameters increase. .

  It goes without saying that the present invention can be applied not only to a traffic signal controller but also to any computer device such as a terminal router 4 or an optical beacon 6.

  Note that the traffic signal controller 5, the signal control device 1, and the like in the present invention may be realized by a single casing or may be realized by a combination of a plurality of casings. Each of these may be realized by one computer or may be realized by combining a plurality of computers.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a schematic diagram which shows the outline | summary of the structure of the traffic system which concerns on this invention. It is a block diagram which shows an example of the functional block of the traffic signal controller. 4 is a block configuration diagram showing an example of a detailed functional configuration of a communication control unit 8 included in the traffic signal controller 5. FIG. It is a figure which shows an example of the operation | movement flow of the communication control part 8 when a constant file is received from the maintenance work apparatus 7. FIG. It is a figure which shows an example of the operation | movement flow of the communication control part 8 when the transmission of a constant file is requested | required from the maintenance work apparatus 7. FIG. It is a figure which shows an example of a constant file.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Signal control apparatus 2 Information provision apparatus 3 Central router 4 Terminal router 5 Traffic signal controller 6 Optical beacon 7 Maintenance work apparatus 8 Communication control part 501 Signal control plan preparation means 502 Signal control plan table 503 Signal control constant table 511 Signal lamp control Means 801 Sending means 802 Receiving means 811 Comment sentence identifying / discarding means 821 Constant file creating means 831 Parameter table 841 FTP daemon

Claims (4)

A computer device capable of exchanging a text file having a structure in which the name or identification code of a parameter whose setting can be changed and its value are described for each parameter type with an external device,
The parameter is a variable parameter that needs to be changed in accordance with a change in the installation location or network configuration of the computer device, and is uniquely set at the time of manufacture or factory shipment, and is changed exceptionally. Contains immutable parameters that are not allowed to be changed,
A receiving unit for receiving a text file having the structure from the external device;
A storage unit for storing values of parameters described in the received text file;
In response to a request from the external device, the parameter stored in the storage unit has a transmission unit that creates a text file having the structure and transmits it to the external device,
The receiver is
An identification means for identifying a comment sentence included in the received text file and a sentence other than the comment sentence;
Comment sentence discarding means for discarding the comment sentence;
Setting value acquisition means for acquiring a parameter name or identification code and its value from a sentence other than the comment sentence ;
Parameter storage means for changing the setting to the acquired value and storing the parameter for which the value is acquired by the setting value acquisition means, regardless of whether the parameter is an invariant parameter or a variable parameter And
The transmitter is
Among the parameters stored in the storage unit, the invariant parameter name or identification code and its value are described as a comment sentence together with a character string indicating a comment sentence, and the variable parameter name or identification code and its value A computer apparatus comprising text file creation means for creating a text file for transmission in which is described as a sentence other than a comment sentence. The computer apparatus according to claim 1, wherein the text file is transmitted / received to / from the external apparatus using a file transfer protocol (FTP). The invariant parameters include
MAC address information of a communication device included in the computer device, information indicating a manufacturer of the computer device, information indicating a manufacturing time of the computer device, information indicating a manufacturing point of the computer device, manufacturing conditions of the computer device At least one of information indicating a result of factory inspection of the computer device, and an IP address of a communication device that permits remote connection among communication devices included in the computer device. The computer apparatus according to 1 or 2. The computer device is a traffic signal controller, terminal router or optical beacon used in a traffic control system.
The computer apparatus according to any one of claims 1 to 3.

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