JP2912283B2 - Train radio system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a train radio system comprising a command console, a central unit, a base station, and an on-vehicle station. In particular, a handset of an on-vehicle station mounted on a train is controlled by an operator. On the other hand, the present invention relates to a train radio system capable of causing an on-board station to issue an alarm in response to an instruction from a command console when careless off-hook continues.

[0002]

2. Description of the Related Art A conventional general train radio system comprises at least a plurality of on-board stations mounted on a train, a plurality of base stations capable of performing radio communication with the on-board stations, and And a command console for commanding the central device via a command console control device.

[0003] Such a train radio system is generally used mainly for transmitting information on train operation and for transmitting report information from the train side. In the event of a natural disaster, the frequency of transmitting the above information is extremely increased, and the handset of each vehicle station is frequently handled. Also, after ending the call with the command desk, the handset may go off-hook carelessly due to the vibration or impact of running the train, or it may not go on-hook properly because May remain.

[0004]

An inadvertent off-hook state of the handset cannot be avoided by the operator at the command console, and an emergency call is made to a vehicle station in an inadvertent off-hook state. If you need a call,
The operator had to wait until it went on-hook.

[0005] In addition, when the call with the command desk is not completed, the in-vehicle station which is inadvertently set to the off-hook state occupies the call line while transmitting, and cannot use the line effectively. Was.

Japanese Unexamined Patent Publication (Kokai) No. 63-299552 discloses that in a car telephone system, the on-time of a transmission-related key provided in a car telephone handset is measured, and when the on-time exceeds a certain value, the on-time is automatically measured. A technology for ending a call is disclosed.

It is conceivable to apply such a technology to a train radio system. However, if the on-time of the key of the handset exceeds a certain value, the call is automatically terminated unconditionally. However, there is a drawback in that a forced automatic call termination occurs contrary to the user's will.

[0008] It is an object of the present invention to provide a system in which a handset of a certain vehicle station is inadvertently left off-hook.
An object of the present invention is to provide a train radio system capable of generating an alarm to the on-vehicle station by a simple instruction from a command console and avoiding an inadvertent off-hook state easily and quickly.

[0009]

In order to achieve such an object, the present invention provides a plurality of on-board stations mounted on a train,
A plurality of base stations capable of performing radio communication with the on-vehicle station, a central device for centrally controlling these base stations, and a command table for controlling the central device and calling a specific on-vehicle station. A handset confirmation button is provided on a command console in a train radio system having the same. When the onboard station receives a handset confirmation command transmitted from the central device via the base station by operating the handset confirmation button, the onboard station determines whether or not the handset of the onboard station is in an off-hook state. An off-hook determination means is provided, and an alarm means for generating an alarm sound or displaying an alarm when the result of the determination is off-hook.

In such a train radio system, when the handset confirmation button is operated at the command console, a handset confirmation command is transmitted to the on-vehicle station. At this time, the on-vehicle station on which the handset is in an off-hook state is issued an alarm. An alarm by sound or alarm display is automatically issued. This alarm can be stopped by operating a button in the on-board station.

[0011] In the on-vehicle station, when the off-hook determination means determines that the hook is off-hook, the on-vehicle station has reception command transmitting means for transmitting a reception command to the base station.
Further, when the handset confirmation display unit for displaying the reception command via the central unit is displayed on the command console, it is possible to confirm at the command console that the on-board station side is in an off-hook state. When the handset is turned on-hook at the off-hook vehicle station, the handset confirmation display section of the command console can be automatically turned off by transmitting a response command to that effect from the on-vehicle station.

[0012]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. This train radio system includes a plurality of command consoles 1-1.
To 1-n, command console controllers 2-1 to 2-n for controlling these, a central unit 3 for managing the whole according to these console controllers, and a plurality of base stations 4-1.
To 4-m and 5-1 to 5-m, and a plurality of on-vehicle stations 6 to 6 which communicate with these base stations via the radio line 8, respectively.
1 to 6-m and 7-1 to 7-m. Each on-board station is mounted on a train and has a unique number for arbitrarily selecting and calling from a command console.

Although not shown, each command console 1-1 to 1-n is provided with a handset confirmation button.
This handset confirmation button is provided with a lamp and also serves as a handset confirmation display section. When the handset confirmation button is pressed, a handset confirmation command is notified to the central unit 3 from the command console control circuits 2-1 to 2-n corresponding to the pressed console, and the handset confirmation command is transmitted to the base station 4- 1 to 4-m and 5-1 to 5
-M to all the on-vehicle stations 6-1 to 6-m and 7-1 to 7-m via the wireless line 8.

Each of the on-board stations 6-1 to 6-m and 7
Although not shown, -1 to 7-m are provided with an abnormal off-hook display button with a lamp and an alarm, and when a handset confirmation command is received, the handset of the vehicle-mounted station is in an off-hook state. Off-hook determining means for determining whether or not there is, when the result of the off-hook determining means is off-hook, receiving command transmitting means for transmitting a receiving command to the base station, after transmitting the receiving command by the receiving command transmitting means Response command transmitting means for transmitting a response command to the base station when the handset goes on-hook is added.

Next, the operation of the train radio system when the handset confirmation button is pressed on the command console will be described with reference to the sequence diagram of FIG. 2 and the flowchart of FIG. In FIG. 2, each operation content is indicated by a code in parentheses. FIG. 3 shows the flow of operation in the on-vehicle station where the handset is in an inadvertent off-hook state.

Now, it is assumed that the handset of the on-board station 6-1 in FIG. 1 is in an inadvertent off-hook state. For example,
When the handset confirmation button is pressed on the command console 1-1 of FIG. 1 (10), the lamp is turned on (20), and the command console control circuit 2-1 notifies the central device 3 of the handset confirmation command (30). The handset confirmation command (30) is transmitted to the base stations 4-1 to 4-
m and 5-1 to 5-m via the wireless line 8 to all the on-board stations 6-1 to 6-m and 7-1 to 7-m.

At this time, in the on-vehicle stations other than the on-vehicle station 6-1, since the handset is on-hook as shown in (50) of FIG. 2, even if the handset confirmation command (30) is received, it is ignored.

When the on-vehicle station 6-1 receives the handset confirmation command (step S1 in FIG. 3), the off-hook determining means determines whether or not the handset is off-hook (the hook switch is off-hook) (step S1). Step S2). Here, since the mobile phone is off-hook, the handset confirmation command is validated (40). In the on-vehicle station 6-1 which has made this valid, the reception command (6) is transmitted to the base station connected by the wireless line 8 by the reception command transmitting means.
0), the transmission is forcibly stopped (100) (step S4), the lamp of the abnormal off-hook display button is turned on (110) (step S5), and an alarm sound is generated (120) (step S6). .

The base station which has received the reception command (60) converts it into a reception command (70) and notifies it to the central unit 3, which further converts the reception command (80) into a reception command (80) and issues a command table control circuit. Notify 2-1. As a result, the lamp of the handset confirmation button flashes (90) on the command console 6-1 so that it is possible to confirm on the command console 6-1 that the handset of the onboard station 6-1 is in an off-hook state.

The on-vehicle station 6 in which the alarm is generated as described above.
When the abnormal off-hook display button is pressed at -1, (1
30) (Step S7), the lamp blinks (14).
0) (step S8) and the alarm sound stops (1).
50) (Step S9). Thereafter, when the handset is on-hook in the on-vehicle station 6-1 (160) (step S10), the response command (180) is returned by the response command transmitting means to the base station connected by the wireless line 8, and the abnormality is detected. The lamp of the off-hook display button is turned off (170) (step S11), and returns to the normal state.

The base station having received the response command (180) converts it into a response command (190) and notifies it to the central unit 3, which further converts it into a response command (200) and converts it into a command table control circuit. Notify 2-1. As a result, the lamp of the handset confirmation button is turned off at the command console 6-1 (210), so that it is possible to confirm at the command console 6-1 that the handset of the onboard station 6-1 is on-hook.

[0023]

As described above, according to the train radio system of the present invention, when the handset of a certain on-board station is inadvertently left off-hook, the car is operated only by operating the button from the command console. Since an alarm can be generated in the upper station, an inadvertent off-hook state can be easily and quickly avoided. Also, unnecessary line use conditions can be forcibly restored promptly.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a train radio system according to the present invention.

FIG. 2 is a sequence diagram illustrating an operation of the system of FIG. 1;

FIG. 3 is a flowchart showing a flow of an operation in an on-vehicle station in which the handset is in an inadvertent off-hook state.

[Explanation of symbols]

 1-1 to 1-n Command console 2-1 to 2-n Command console controller 3 Central unit 4-1 to 4-m Base station 5-1 to 5-m Base station 6-1 to 6-m Onboard Station 7-1 to 7-m On-board station 8 Wireless line

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04B 7/26-7/26 113 H04Q 7/04-7/38 H04M 1/00 G08B 25/10

Claims (4)

(57) [Claims] 1. A plurality of on-board stations mounted on a train, a plurality of base stations capable of performing wireless communication with the on-board stations, a central unit for centrally controlling these base stations, and a central unit. In a train radio system having a command table that can be controlled to call a specific on-board station, a handset confirmation button is provided on the command table, and the central unit is provided on the on-board station by operating the handset confirmation button. Receiving a handset confirmation command transmitted from the base station through the base station, and determining whether or not the handset of the on-vehicle station is in an off-hook state, and an alarm when the result of the determination is off-hook. An alarm means for generating a sound or displaying an alarm is provided. 2. The train radio system according to claim 1, wherein the on-vehicle station is provided with a button for turning off the alarm means. 3. An on-vehicle station is provided with reception command transmitting means for transmitting a reception command to a base station when the result of the determination by the off-hook determination means is off-hook. The train radio system according to claim 1 or 2, further comprising a handset confirmation display unit that displays the fact when received via the terminal. And a response command transmitting means for transmitting a response command to the base station when the handset goes on-hook after the reception command is transmitted by the reception command transmitting means. 4. The train radio system according to claim 3, wherein the system is turned off when the response command is received via a central device.