JPS5922639Y2 - Road information display system - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a road information display system that variably displays road information on a road information display board by remote control.

Generally, safe driving on a road requires a speed that is appropriate for the weather and road conditions at each location, but this is especially necessary during abnormal weather.

Therefore, it is important to display road information such as restricted sections, restricted periods, reasons for restrictions, content of restrictions, detours, etc. on road information display boards, and to provide such road information to road users. Effective for safety.

In this manner, conventional road information display systems display road information on road information display boards through remote monitoring and control using public communication lines as transmission channels for the purpose of maintenance and management by road administrators.

That is, FIG. 1 shows the constituent countries of a conventional road information display system.

In the same figure, 1 is a main control device whose details are shown in FIG. 2, and which is installed in a management office and operated by a road administrator to display and provide road information to road users; 2 and 3a to 3;
4a to 4n are subcontrollers that perform remote monitoring control with the main controller 1, and 5a to 5n are subcontrollers 4a to 4n, the details of which are shown in FIG. 3. The input/output units 6a to 6n connected to the input/output units 6a to 4n are translucent type, subtitle type, electric light type, etc. road information display boards each having a function for displaying road information etc. to road users.

The sub-controller 4a, the input/output section 5a and the road information display board 6a, the sub-controller 4b, the input/output section 5b and the road information display board 6b,...the sub-controller 4n, the input/output section 5n and Each set of road information display boards 6n is installed at a predetermined location along the roadside.

Further, in the main control device 1 shown in FIG. 2, 7 is a display setting section with a function for operation by an operator, 8 is a first control section for controlling and processing various signals, and 9 is a display setting section for controlling and processing various signals. a first transmission unit that performs serial-to-parallel conversion and modulation/demodulation of the signal;
Reference numeral 10 denotes a first network control device having a function of automatically making an outgoing connection to a central office line.

Furthermore, in the sub-controllers 4a to 4n shown in FIG.
automatically receive signals from transmission lines 3a to 3n, respectively,
A second network control device 12 has a function of connecting to a line;
The transmission section 13 is a second control section that performs various signal control and processing between the human output sections 5a to 5n.

Next, the operation of the road information display system having the above configuration can be illustrated by the operation flowchart shown in FIG. 4, and will be briefly explained.

First, when display items are set by the display setting section 7 of the main control device 1, the set display contents are processed and controlled by the first control section 8, and then serially transmitted by the first transmission section 9. After being converted, it is modulated and automatically transmitted from the first network control device 10.

This signal is then automatically connected to the designated station number via the transmission line 2, for example to the sub-controller 4a via the transmission line 3a.

Then, the signal sent from the transmission path 3a automatically arrives at the second network control device 11, is connected to the line, and is sent to the second transmission section 11.
2 and the second control unit 13, signals are received and received in a predetermined transmission format and displayed on the road information display board 6a.

When the display operation of the road information display board 6a is completed, the line is restored by a signal from the main controller 1.

However, in conventional road information display systems, the operational driving time for displaying road information on the road information display board includes the time required to command the display contents and the time until the road information display board completes its operation. It takes too much time to operate.

For example, when estimating the operation time required for remote control of the road information display boards 6a to 6n with reference to the operation flowchart in FIG. 4, the operation confirmation time from display point selection P1 to display activation P2 is approximately 1 minute, and from display activation P2 to The time required to receive and receive the display command sending signal P3 is about 1 minute, and the operating time of the road information display board from display command sending P3 to completion signal receiving P4 is about 2 minutes, for a total of 4 minutes.

Therefore, it takes 40 minutes to operate and drive 10 road information display boards.

Therefore, the operator must remain at the main controller 1 for as long as 40 minutes.

Furthermore, when a road information display board malfunctions, the line is connected and the operation time continues until the failure is repaired, so the operator must notice the failure and restore the line at hand.

Moreover, this road information display board is most often used during abnormal weather, which is also the busiest time for road administrators, making it very inconvenient to use.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a road information display system that can shorten the time taken to operate a road information display board, thereby saving time for a road administrator in providing road information.

In order to achieve these objectives, the present invention uses a transmission line from a central control unit installed in a management office to a terminal device including a road information display board installed at a predetermined location along the roadside, and remotely monitors and controls the road. A road information display system that variably displays information, wherein the central control device includes a main control device and a main control additional device, and restores the line by only issuing display commands to terminals, and the terminals are used only for receiving calls. When the display is completed, when there is a failure, or when the status changes due to hand intervention, an operation confirmation signal is automatically returned to restore the line via the transmission line, and the main control additional device receives an operation confirmation signal from the terminal. This system automatically records the contents of the return, the failure of the central control unit, the failure of the line, etc. together with the time, and will be explained in detail below using an example.

FIG. 5 shows the constituent countries of an embodiment of the road information display system according to the present invention.

In the figure, reference numeral 14 denotes a central control device, which is composed of a main control device 1 and a main control additional device 23 installed near the main control device 1, as its detailed configuration is shown in FIG. is a transmission line that is a public communication line for incoming calls only, 1
63 to 16n are controllers whose detailed configuration is shown in FIG. 7, respectively.

Note that 173 to 17n are the controller 16a, the input/output unit 5a, the road information display board 6a, the controller 16b, and
Input/output unit 5b, road information display board 6b, controller 16n
, an input/output section 5n, and a road information display board 6n, which are installed as a set at a predetermined location along the roadside.

In addition, in the main control additional device 23 in the central control device 14 shown in FIG. 6, 18 is a recording device such as a digital printer, and 19 is a third control section that controls and processes various signals. Controls and displays the results of checking and collating various signals from the section 8 and various signals from the third transmission section 21 described below to be recorded in the recording device 18 together with the time signal from the clock section 20 described below. It has a function of controlling the operation confirmation lamps of the road information display boards 6a to 6n displayed on the setting section 7, and controls, for example, to turn on a blue lamp when the operation is normal, and to turn on a red lamp when the operation is malfunctioning. do.

20 is a clock unit having a function of creating and outputting a time signal;
Reference numeral 21 represents a third transmission unit that performs serial-to-parallel conversion and modulation/demodulation of various signals, and 22 represents a third network control device having a function of automatically connecting incoming calls to a central office line.

Moreover, in the controllers 163 to 16n shown in FIG.
24 is a fourth network control device having a function of automatically connecting to and receiving calls from the central office line; 25 is a control and processing device for various signals;
A transmission control section 26 performs serial-to-parallel conversion and modulation/demodulation of various signals, and numeral 26 refers to the fourth network control device 24 and the transmission control section 2.
This is a sub-control addition device consisting of 5 parts.

The recorded contents of the recording device 18 include the time of operation on the display setting section 7, the address number of the road information display boards 6a to 6n, the result of the display operation of the road information display boards 6a to 6n, and the time when the central office line cannot be connected. , when manual intervention is performed on the controllers 163 to 16n, or when the road information display boards 6a to 6n malfunction.
It is assumed that the information is printed in a predetermined format when the main controller 1 malfunctions.

Next, the operation of the road information display system according to the above configuration can be illustrated by the operation flowchart shown in FIG. 8, but will be briefly explained.

First, when display items are set by the display setting section 7 of the main control device 1, the set display contents are processed and controlled by the first control section 8, and then serially transmitted by the first transmission section 9. After being converted, it is modulated and automatically transmitted from the first network control device 10.

This transmitted signal is then connected to the specified station number via the transmission line 2, for example via the transmission line 3a to the terminal 17a.
connected to.

Therefore, these signals automatically arrive at the fourth network control section 24 of the sub-control addition device 26 of the controller 16a, and the signals are switched and connected to the second transmission section 12 and second control section 13 side, and are sent to the fourth network control section 24 of the sub-control addition device 26 of the controller 16a. Signals are received and received in a transmission format, and when the display command is completed, the line is restored by a signal from the main controller 1.

On the other hand, the transmission control section 25 receives from the second transmission section 12 a display command signal, a signal indicating completion of display operation of the road information display board, a failure signal, a signal for hand operation, and the like.

These signals are then transmitted upwardly by the fourth network control section 24.

This signal is then transmitted to the central controller 14 via the transmission line 3a and the transmission line 15.

That is, the signal from this transmission line 15 is automatically received at the third network control device 22 of the main control additional device 23, and when the line is connected, the transmission control unit 25 of the controller 16a and the main control additional device 23 are connected. Signals are exchanged with the third transmission unit 21 in a predetermined transmission format.

Then, when the completion of receiving and receiving this signal is confirmed, automatic restoration of the office line is performed.

Then, the third control section 19 checks the various signals from the first control section 8 and the various signals from the third transmission section 21, and records the collated results together with the time signal from the clock section 20. This controls the recording device 18 to record.

In addition, in the above explanation, the main sub-control device and the additional device are provided independently from each other, but the present invention is not limited to this, and the main sub-control device is provided with the additional device in advance. Needless to say, it may be incorporated.

As explained in detail above, according to the road information display system according to the present invention, (A) For example, when one management office maintains and manages 10 road information display boards, the operation time is as shown in FIG. Estimating with reference to the operation flowchart, the operation time from display point selection P6 to display start P7 is about 30 seconds, and the time required to receive the signal from display start P7 to automatic recovery P8 is about 1 minute, totaling 1 minute 30 seconds. It takes 15 minutes to operate 10 road information display boards.

Therefore, the operating time can be shortened.

Note that in this case, the device is operating normally.

(B) Generally, equipment failures occur with a certain probability, so it is necessary to clarify the procedures for detecting failures in the equipment itself.

As mentioned above, in this invention, since the central control unit only sends display commands to the terminals to restore the line, the operation time is determined regardless of the operating status of the equipment, but as mentioned above, this operation time can be shortened. This not only reduces the amount of time required to use public communication lines, but also reduces usage fees.

(0) The operation of the remote control can be confirmed by simply observing the recorded state at a time convenient for the operator, so there is a degree of freedom in operation and maintenance is very easy.

(D) Since failures are recorded for each device, the location of the failure can be discovered quickly, and the cost of managing and maintaining the equipment can be reduced.

[Brief explanation of drawings]

Figure 1 shows the constituent countries of a conventional road information display system, Figure 2 is a detailed block diagram of the main controller in Figure 1, Figure 3 is a detailed block diagram of the sub-controller in Figure 1, Figure 4 is the first
FIG. 5 is an operation flowchart for explaining the operation of the system shown in FIG.
6 is a detailed block diagram of the central control device in FIG. 5, FIG. 7 is a detailed block diagram of the controller in FIG. 5, and FIG. 8 is an operation flowchart for explaining the operation of FIG. 5. be. 1... Main controller, 2 and 3a to 3n...
...Transmission line, 4a to 4n...Subcontroller, 5a
~5n...Input/output section, 6a~6n...
Road information display board, 7...Display setting section, 8...
. . . first control section, 9 . . . first transmission section, 10.
...First network control device, 11...Second network control device, 12...Second transmission unit, 13...
・Second control unit, 14...Central control device, 15.
...Transmission line, 16a to 16n...Controller, 17a to 17n...Terminal, 18...
. . . Recording device, 19 . . . Third control unit, 20.
...Clock part, 21...Third transmission part, 22
...Third network control device, 23... Main control additional device, 24... Fourth network control device, 25...
. . . Transmission control unit, 26 . . . Sub-control additional device.

Claims (4)

[Scope of utility model registration request] (1) A road information display system that variably displays road information through remote monitoring and control using a transmission line from a central control unit installed in a management office to a terminal device including a road information display board installed at a predetermined location along the roadside. The central control device includes a main control device and a main control additional device, and restores the line by only instructing the terminal device to display, and the terminal device transmits the message to the terminal device through a transmission path dedicated to incoming calls when the display is completed. , in the event of a failure or a change in status such as manual intervention, an operation confirmation signal is automatically returned to restore the line, and the main control additional device is informed of the contents of the operation confirmation signal returned from the terminal and the failure of the central control unit. A road information display system that automatically records the time of day and times when line connections are unavailable. (2) The road information display system according to claim 1, which is characterized in that a public communication line is used as a transmission path. (3) The terminal device consists of a controller, an input/output section, and a road information display board, and the controller has various functions between the input/output section and the transmission section that performs serial/parallel conversion of various signals and modulation/demodulation of signals. A control unit that performs signal control and processing, a network control device that has the function of automatically oscillating and connecting to the central office line, and a transmission system that performs control and processing of various signals, serial-to-parallel conversion, and modulation/demodulation of various signals. A road information display system according to claim 1, characterized in that the system comprises a control section. (4) The main control additional device includes the above-mentioned recording device such as a digital printer, a clock section that has the function of creating and outputting a time signal, a network control device that has the function of automatically connecting incoming calls to the central office line, and the main control device. The various signals set by the control device are checked and compared with the various signals returned from this network control device via the transmission section, and the results are recorded in the recording device along with the time signal. A road according to claim 1 of the utility model registration, characterized in that the road is comprised of a control section having a function of controlling and controlling an operation confirmation lamp of a road information display board provided in a display setting section of a main control device. Information display system.