JP7308625B2 - Portable device and notification system - Google Patents

Description

The present invention relates to mobile devices and notification systems.

When carrying out track construction on a railway track, it is necessary to notify a track construction site worker of the approach of a train so that the track construction can be carried out safely. Therefore, conventionally, there is an alarm device that automatically detects an approaching train and gives an alarm by the procedures shown in (1) to (5) below (see Patent Document 1, for example).

(1) A GPS (Global Positioning System) receiver mounted on a train receives the position of the train from radio waves from GPS satellites.
(2) Train position information indicating the position of the train measured by the GPS receiver provided on the train is transmitted from the transmitter to the alarm device at the track construction site.
(3) A GPS receiver provided in an alarm device at a track construction site receives radio waves from GPS satellites and identifies the position of the alarm device.
(4) The warning device calculates the distance, which is the difference between the position of the track construction site and the position of the train.
(5) When the calculated distance becomes equal to or less than the permissible approach distance, an alarm device provided in the alarm device outputs an alarm.

JP-A-11-59419

A conventional alarm device uses a GPS receiver provided on a train to receive radio waves transmitted from GPS satellites, identify the position of the train, compare it with the position of the track construction site, and detect the approach of the train. Therefore, it can only be grasped that the train has approached within a certain distance.

Accordingly, it is an object of one or more aspects of the present invention to be able to notify effective information for safe track construction in addition to the distance to the train.

A portable device according to a first aspect of the present invention is a portable device that notifies an approaching train, and receives GPS information from a GPS satellite via a GPS (Global Positioning System) antenna and the GPS antenna. a GPS receiver, a mobile position specifying unit that specifies a mobile position, which is the position of the mobile device, using the GPS information, an antenna for travel information, and at the position of the train via the antenna for travel information a traveling information receiving unit for receiving traveling information including train position information indicating a certain train position and speed information indicating the speed of the train; A controller for calculating a train arrival time, which is the time it takes the train to reach the portable position, a display unit for displaying a screen image showing at least the train arrival time, a train information antenna, and the train information antenna. a train information receiving unit for receiving train information including route information indicating a route of the train to a stop limit position indicating a travel permitted point of the train; and determining whether or not the portable position is included in the route. and an audio output unit that outputs an alarm sound, and the control unit uses the portable device position and the train position to determine the train distance, which is the distance between the portable device and the train is calculated, and the train arrival time is calculated using the train distance and the speed, and the voice output unit sets the train distance as an allowable limit in advance when the mobile position is included in the route When the distance is equal to or less than the allowable limit distance, which is a predetermined distance, the alarm sound is output, and if the carrying position is not included in the route, even if the train distance is equal to or less than the allowable limit distance, It is characterized in that the warning sound is not output .

A portable device according to a second aspect of the present invention is a portable device that notifies an approaching train, and receives GPS information from a GPS satellite via a GPS (Global Positioning System) antenna and the GPS antenna. a GPS receiver, a mobile position specifying unit that specifies a mobile position, which is the position of the mobile device, using the GPS information, an antenna for travel information, and at the position of the train via the antenna for travel information a train information receiving unit for receiving running information including train position information indicating a certain train position and speed information indicating the speed of the train; a train information antenna; a train information receiving unit for receiving train information including route information indicating the route of the train up to the stop limit position indicating the travel permission point of the train; an operation unit for receiving an input of the position of the portable device when the GPS off setting is selected; and using the portable position, the train position and the speed when the GPS on setting is selected. to calculate a first train arrival time, which is the time for the train to reach the portable position, and when the GPS off setting is selected, the position input from the operation unit, the train position and the A control unit that calculates a second train arrival time, which is the time for the train to reach the position input from the operation unit, using the speed, and the first train arrival time or the second train arrival time. and a display unit that displays a screen image showing at least
A portable device according to a third aspect of the present invention is a portable device that notifies an approaching train, and receives GPS information from a GPS satellite via a GPS (Global Positioning System) antenna and the GPS antenna. a GPS receiver, a mobile position specifying unit that specifies a mobile position, which is the position of the mobile device, using the GPS information, an antenna for travel information, and at the position of the train via the antenna for travel information a traveling information receiving unit for receiving traveling information including train position information indicating a certain train position and speed information indicating the speed of the train; a controller for calculating a train arrival time, which is the time it takes for the GPS receiver to arrive at the portable position; and a display unit for displaying a screen image showing at least the train arrival time. counting the number of times that GPS information could not be received continuously, and
The screen image also indicates the number of times of non-positioning, and the portable device includes an operation unit that receives an input for selecting one of an output-on setting and an output-off setting, and when the output-on setting is selected. , an alarm sound is output when the number of times of non-positioning is equal to or greater than a permissible limit number of times, which is a number of times predetermined as a permissible limit; and an audio output unit that does not output the alarm sound even when the number of times is equal to or greater than the limit number .

A notification system according to a first aspect of the present invention is a notification system comprising: a radio device mounted on a train; a radio communication unit that transmits travel information including train position information indicating a train position, which is the position of the train, and speed information indicating a speed of the train, via the radio antenna; includes a GPS (Global Positioning System) antenna, a GPS receiver that receives GPS information from GPS satellites via the GPS antenna, and uses the GPS information to specify a mobile position, which is the position of the mobile device. a mobile position specifying unit, a mobile information antenna, a mobile information receiving unit for receiving the mobile information via the mobile information antenna, the mobile location, the train location and the speed, the a control unit for calculating a train arrival time, which is the time for the train to reach the portable position; a display unit for displaying a screen image showing at least the train arrival time ; a train information antenna; a train information receiving unit for receiving train information including route information indicating a route of the train to a stop limit position indicating a travel permitted point of the train; and an audio output unit for outputting an alarm sound, wherein the control unit uses the portable device position and the train position to determine the distance between the portable device and the train. Calculate a distance, calculate the train arrival time using the train distance and the speed, and the audio output unit determines that the train distance is an allowable limit when the mobile position is included in the route When the distance is equal to or less than the allowable limit distance, which is a predetermined distance, the alarm sound is output, and if the carrying position is not included in the route, even if the train distance is equal to or less than the allowable limit distance , wherein the warning sound is not output .

A notification system according to a second aspect of the present invention is a notification system comprising: a radio device mounted on a train; a radio communication unit that transmits travel information including train position information indicating a train position, which is the position of the train, and speed information indicating a speed of the train, via the radio antenna; includes a GPS (Global Positioning System) antenna, a GPS receiver that receives GPS information from GPS satellites via the GPS antenna, and uses the GPS information to specify a mobile position, which is the position of the mobile device. a mobile position specifying unit, a running information antenna, a running information receiving unit for receiving the running information via the running information antenna, a train information antenna, and the train information antenna, a train information receiving unit for receiving train information including route information indicating the route of the train to a stop limit position indicating the travel permission point of the train; and an input for selecting either GPS ON setting or GPS OFF setting. and an operation unit that receives an input of the position of the portable device when the GPS OFF setting is selected, and an input of the portable device position, the train position and the speed when the GPS ON setting is selected. is used to calculate a first train arrival time, which is the time for the train to reach the handheld location, and if the GPS off setting is selected, the input location, the train location and the speed a screen image showing at least the first train arrival time or the second train arrival time and a display unit that displays

ADVANTAGE OF THE INVENTION According to one or more aspects of this invention, effective information for carrying out track construction safely can be notified other than the distance from a train.

1 is a block diagram schematically showing the configuration of a notification system according to Embodiment 1; FIG. 1 is a block diagram schematically showing the configuration of a radio device according to Embodiment 1; FIG. (A) and (B) are block diagrams showing hardware configuration examples. 1 is a block diagram schematically showing the configuration of a mobile device according to Embodiment 1; FIG. 4 is a flow chart for detecting and notifying an approaching train by the portable device according to Embodiment 1. FIG. FIG. 11 is a block diagram schematically showing the configuration of a notification system according to Embodiment 2; FIG. FIG. 11 is a block diagram schematically showing the configuration of a radio device according to Embodiment 2; FIG. FIG. 10 is a block diagram schematically showing the configuration of a mobile device according to Embodiment 2; FIG. 10 is a flow chart for detecting and notifying an approaching train by the portable device according to Embodiment 2. FIG. FIG. 12 is a block diagram schematically showing the configuration of a notification system according to Embodiments 3 and 4; FIG. FIG. 4 is a schematic diagram for explaining a case where the stop limit position is inside a tunnel; FIG. 11 is a block diagram schematically showing the configuration of a mobile device according to Embodiment 3; 10 is a flow chart for the mobile device to detect and notify an approaching train when the GPS database use ON setting is selected in the third embodiment. 10 is a flow chart for the mobile device to detect and notify an approaching train when the GPS database use off setting is selected in the third embodiment. FIG. 12 is a block diagram schematically showing the configuration of a mobile device according to Embodiment 4; FIG. FIG. 11 is a schematic diagram showing an example of receiving a signal without using the number of reference clocks as in the third embodiment; FIG. 11 is a schematic diagram showing an example of receiving a signal using a reference clock number as in the fourth embodiment;

Embodiment 1.
FIG. 1 is a block diagram schematically showing the configuration of notification system 100 according to Embodiment 1. As shown in FIG.
Notification system 100 comprises wireless device 110 and mobile device 120 .
The wireless device 110 is mounted on the train 150 and acquires information on running of the train 150 from the train control device 151 mounted on the train 150 .
Portable device 120 notifies the approach of train 150 .

It is assumed that the train 150 is proceeding on the track 160 in the traveling direction D1.
The train control device 151 acquires speed information indicating the speed of the train 150 from the speedometer 152 mounted on the train 150 . The train control device 151 stores a train identification number, which is train identification information for identifying the train 150 . The train control device 151 identifies the traveling direction D1 and detects the train position, which is the position of the train 150, from the ground coils 161 arranged at regular intervals on the track 160. FIG.

Then, the train control device 151 provides the radio device 110 with the train identification number, train position information indicating the detected train position, acquired speed information, and traveling direction information indicating the specified traveling direction.

FIG. 2 is a block diagram schematically showing the configuration of radio equipment 110. As shown in FIG.
Wireless device 110 includes interface section (hereinafter referred to as I/F section) 111 , control section 112 , wireless antenna 113 , and wireless communication section 114 .
The I/F unit 111 is a communication interface that communicates with the train control device 151 . For example, the I/F unit 111 receives a train identification number, train position information, speed information and traveling direction information from the train control device 151 and provides the received information to the control unit 112 .
The control unit 112 generates running information including a train identification number, train position information, speed information and traveling direction information, gives the generated running information to the wireless communication unit 114, and transmits the running information to the wireless communication unit 114. Send to device 120 .

The radio antenna 113 transmits and receives radio waves.
The wireless communication unit 114 is a wireless communication interface that performs wireless communication via the wireless antenna 113 . For example, the wireless communication unit 114 wirelessly transmits the travel information given from the control unit 112 to the mobile device 120 via the wireless antenna 113 .
It is assumed that the travel information is transmitted at regular intervals.

Part or all of the control unit 112 described above includes, for example, a memory 10 and a CPU (Central Processing Unit) that executes a program stored in the memory 10, as shown in FIG. ) and the like. Such a program may be provided through a network, or recorded on a recording medium and provided. That is, such programs may be provided as program products, for example.

Further, part or all of the control unit 112 may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit) or FPGA (Field Programmable Gate Array) or other processing circuit 12 .

Returning to FIG. 1, portable device 120 uses GPS information received from GPS (Global Positioning System) satellites 170 at regular intervals and travel information to detect train approaching, which is effective information for safe track construction. Information is notified in real time to the user 101 holding the mobile device 120 .
Here, the user is assumed to be a track construction site worker.

FIG. 4 is a block diagram schematically showing the configuration of portable device 120. As shown in FIG.
Portable device 120 includes GPS antenna 121, GPS receiver 122, travel information antenna 123, travel information receiver 124, data update unit 127, control unit 130, display unit 131, and audio output unit. 132 and a power supply unit 133 .

The GPS antenna 121 receives radio waves.
GPS receiver 122 receives GPS information from GPS satellites 170 via GPS antenna 121 . The GPS information received by GPS receiver 122 is provided to data updater 127 .

The traveling information antenna 123 receives radio waves.
Travel information receiving section 124 receives travel information from wireless device 110 via travel information antenna 123 .
The traveling information receiving section 124 includes a signal receiving section 125 and a demodulating section 126 .

Signal receiving section 125 receives a signal from wireless device 110 via running information antenna 123 . The received signal is provided to demodulator 126 .
Demodulator 126 demodulates the travel information from wireless device 110 from the signal given from signal receiver 125 . The demodulator 126 supplies the train identification number, speed information, and traveling direction information contained in the demodulated running information to the control unit 130, and updates the data updating unit 127 with the train position information contained in the demodulated running information. give to

The data updating unit 127 functions as a mobile location specifying unit that specifies the mobile location, which is the location of the mobile device 120, from the GPS information given from the GPS receiving unit 122, and generates mobile location information indicating the specified mobile location. do. The generated mobile location information is provided to control unit 130 .
Specifically, the data updating unit 127 obtains the coordinates of the mobile device 120 using the GPS information from the GPS receiving unit 122 .
The data update unit 127 has a GPS database 128, and uses the conversion information stored in the GPS database 128 to convert the obtained coordinates into a mobile phone position, thereby indicating the converted mobile phone position. Generate mobile location information. Here, the coordinates indicated by the GPS information have a different unit from that of the train position information, so the data updating unit 127 performs conversion between the coordinates indicated by the GPS information and the mobile position.
Then, the data update unit 127 updates the mobile location information stored in the GPS database 128 with the newly generated mobile location information, thereby updating the GPS database 128 to the latest state.
If the GPS information cannot be received by the GPS receiving section 122 and the mobile position cannot be specified, the data updating section 127 notifies the control section 130 to that effect. In this case, the mobile location information stored in the GPS database 128 is not updated.

Also, the data updating unit 127 updates the latest position of the train 150 based on the train position information given from the demodulating unit 126 . Then, the data updating unit 127 gives the train position information to the control unit 130 .
Specifically, the data update unit 127 includes a running information database 129, and updates the train position information stored in the running information database 129 with the newly acquired train position information. The running information database 129 is updated to the latest state.

The control unit 130 calculates the train distance, which is the distance between the mobile position indicated by the mobile position information given from the data updating unit 127 and the train position indicated by the train position information given from the data updating unit 127 . Then, using the calculated train distance and the speed indicated by the speed information given from the demodulation unit 126, the control unit 130 determines whether the train 150 moves from the train position indicated by the train position information to the mobile position indicated by the mobile position information. A train arrival time, which is the time to reach the position, is calculated. The train distance calculated using the mobile position is also called the first train distance, and the train arrival time calculated using the mobile position is also called the first train arrival time.

Then, the control unit 130 provides the display unit 131 with train approach information including the calculated train arrival time. The train approach information includes the train number given by the demodulator 126, the train position indicated by the train position information, the speed indicated by the speed information given by the demodulator 126, the traveling direction indicated by the traveling direction information, and At least one of the train distances may be included.

Also, based on the notification from the data update unit 127, the control unit 130 counts the number of times GPS information has not been received continuously, that is, the number of times of non-positioning. The counted number of unfixed positions may be included in the train approach information displayed on the display unit 131 .

Furthermore, if the counted number of times of non-positioning is equal to or greater than the allowable limit number of times that is predetermined as the allowable limit, or the calculated distance is the distance that is predetermined as the allowable limit. If the distance is less than the allowable limit distance, the voice output unit 132 is caused to output an alarm sound.

The display unit 131 displays a screen image. For example, the display unit 131 displays a screen image showing train approach information.
The screen image shows at least the train arrival time. In Embodiment 1, in addition to the train arrival time, the screen image shows the train number, train position, speed, traveling direction, train distance, and the number of unmeasured positions. At least one of the train distance and the number of unfixed positions may be indicated.
The display unit 131 can be configured by, for example, a display.

The audio output unit 132 outputs audio. For example, the audio output unit 132 outputs an alarm sound. In Embodiment 1, the audio output unit 132 outputs an alarm sound when the train distance is equal to or less than the allowable limit distance. Also, the audio output unit 132 outputs an alarm sound when the number of times of unfixed positioning is equal to or greater than the allowable limit number of times.
The audio output unit 132 can be composed of, for example, a speaker.
The power supply unit 133 supplies power to each unit of the mobile device 120 .

Part or all of the demodulator 126, the data updater 127 and the controller 130 described above are stored in the memory 10 and the memory 10 as shown in FIG. It can be configured with a processor 11 such as a CPU that executes a program. Such a program may be provided through a network, or recorded on a recording medium and provided. That is, such programs may be provided as program products, for example.

Also, part or all of the demodulator 126 and the data updater 127 may be, for example, as shown in FIG. It can also be configured with a processing circuit 12 such as an ASIC or FPGA.

The GPS receiver 122 can be configured with a communication interface for receiving GPS information, and the signal receiver 125 can be configured with a communication interface for receiving radio signals.

Next, the operation of portable device 120 according to Embodiment 1 will be described with reference to FIG.
FIG. 5 is a flow chart of the portable device 120 detecting and notifying of an approaching train.
The flowchart shown in FIG. 5 is started when the portable device 120 is powered on. Note that the mobile device 120 can receive GPS information and travel information when the power is turned on.

First, the GPS receiving unit 122 receives GPS information by radio waves from the GPS satellites 170 via the GPS antenna 121 (S10). GPS receiving section 122 provides the received GPS information to data updating section 127 .

The data update unit 127 identifies the coordinates identified using the GPS information as the mobile position (S11). The data update unit 127 generates cell-phone location information indicating the specified cell-phone location, stores the generated cell-phone location information in the GPS database 128, and gives it to the control unit 130. FIG.
When GPS information indicating that positioning has not been performed is provided from GPS receiving section 122, data updating section 127 provides the held mobile location information to control section 130, and also provides information indicating that positioning has not been performed. is given to the control unit 130 . In this case, the data updating unit 127 does not update the mobile location information already held in the GPS database 128 and holds it as it is.

Also, the control unit 130 updates the number of times of non-positioning based on the information acquired from the data updating unit 127 (S12). For example, when mobile location information without information indicating unmeasured positioning is sent, the control unit 130 updates the number of times of unmeasured positioning to “0”, and the mobile location information is sent together with information indicating unmeasured positioning. If so, add "1" to the number of times of non-positioning.

On the other hand, as the train 150 runs, the train control device 151 detects the position of the train 150 from the ground coils 161 arranged at regular intervals on the track 160 and acquires the speed from the speedometer 152 . The train control device 151 provides the radio device 110 with a train identification number, train position information indicating the detected position of the train 150, acquired speed information, and traveling direction information indicating the traveling direction of the train 150, The wireless device 110 generates running information including a train identification number, train position information, speed information and traveling direction information, and wirelessly transmits the generated running information to the portable device 120 .

Then, the travel information receiving unit 124 receives the travel information from the wireless device 110 via the travel information antenna 123 (S13). Among the received travel information, the train identification number, speed information and traveling direction information are provided to the control section 130 , and the train position information is provided to the data updating section 127 .

The data updating unit 127 updates the train position information stored in the running information database 129 based on the train position information given from the running information receiving unit 124, and then acquires the position of the train 150 (S14). . The data update unit 127 gives the train position information to the control unit 130 .

Next, the control unit 130 calculates the train distance, which is the distance between the mobile position indicated by the mobile position information and the train position indicated by the train position information (S15).
Further, the control unit 130 uses the train distance calculated in step S15, the speed indicated by the speed information, and the traveling direction indicated by the traveling direction information to determine whether the train 150 is located at the train position indicated by the train position information. The train arrival time, which is the time required to reach the mobile position indicated by the mobile position information, is calculated (S16).

Then, the control unit 130 causes the display unit 131 to display the train approach information including the train arrival time calculated in step S16 (S17). The train approach information includes the train number given by the demodulator 126, the train position indicated by the train position information, the speed indicated by the speed information given by the demodulator 126, the traveling direction indicated by the traveling direction information, and unmeasured position. It is assumed that the number of times is also included.

Further, the control unit 130 determines whether or not the number of times of non-positioning updated in step S12 is smaller than the permissible limit number of times that is predetermined as the permissible limit (S18). If the number of unfixed times is less than the allowable limit number of times (Yes in S18), the process proceeds to step S19, and if the number of unfixed positions is equal to or greater than the allowable limit number of times (No in S18), the process proceeds to step S21. move on.

In step S19, the control unit 130 determines whether or not the train distance calculated in step S15 is greater than a predetermined permissible limit distance as a permissible limit. If the train distance is greater than the allowable limit distance (Yes in step S19), the process proceeds to step S20, and if the train distance is equal to or less than the allowable limit distance (No in S19), the process proceeds to step S21. .

In step S20, control unit 130 causes audio output unit 132 to stop outputting the alarm sound. Note that when the alarm sound is not output, the control unit 130 does not cause the audio output unit 132 to output the alarm sound. Then, the process returns to step S10.

In step S21, control unit 130 causes audio output unit 132 to output an alarm sound. Note that when the alarm sound has already been output, the control unit 130 causes the audio output unit 132 to continue outputting the alarm sound. Then, the process returns to step S10.

It should be noted that there are many cases where the control unit 130 cannot receive travel information, such as when the train 150 is not on the line, and the alarm sound is always output. Therefore, no warning sound is output due to the inability to receive travel information.

As described above, according to Embodiment 1, the portable device 120 periodically obtains the GPS information from the GPS satellites 170 and the running information from the train 150, thereby periodically obtaining the train approaching information. can be displayed.
Therefore, the portable device 120 can accurately display the arrival time of the train 150 . The portable device 120 can also display the direction and speed of the train 150 . Furthermore, the mobile device 120 can prompt the user of the mobile device 120 to evacuate at an appropriate timing through the display of the mobile device 120 .

Embodiment 2.
FIG. 6 is a block diagram schematically showing the configuration of notification system 200 according to the second embodiment.
Notification system 200 comprises wireless device 210 and mobile device 220 .
In Embodiment 1, notification system 100 that detects train approach based on GPS information from GPS satellites 170 and running information from train 150 has been described. In Embodiment 2, a notification system 200 that detects an approaching train corresponding to a branch line by communicating with a train control device 280 using a wireless device 210 and a portable device 220 will be described.

It is assumed that the train 150 is proceeding on the track 260 in the traveling direction D1.
In the second embodiment, line 260 branches in a Y shape. For example, one track 260A on which the train 150 is currently running is assumed to branch into a first branch track 260B and a second branch track 260C in the traveling direction D1 of the train.
Here, it is assumed that the user 101 holding the portable device 220 is working on the first branched track 260B.

A train control device 151 , a speedometer 152 and a radio device 210 are mounted on the train 150 . The train control device 151 and the speedometer 152 in the second embodiment are the same as the train control device 151 and the speedometer 152 in the first embodiment.

FIG. 7 is a block diagram schematically showing the configuration of radio equipment 210 according to the second embodiment.
Radio device 210 includes I/F section 111 , control section 212 , radio antenna 113 , radio communication section 114 , control radio antenna 215 , and control radio communication section 216 .
I/F section 111, radio antenna 113 and radio communication section 114 in the second embodiment are the same as I/F section 111, radio antenna 113 and radio communication section 114 in the first embodiment.

Control radio antenna 215 transmits and receives radio waves.
The control wireless communication unit 216 is a wireless communication interface that performs wireless communication via the control wireless antenna 215 . For example, the control wireless communication unit 216 transmits train position information indicating the position of the train 150 given from the control unit 212 to the train control device 280 . The control wireless communication unit 216 also receives train information from the train control device 280 . Train information will be described later.

The control unit 212 according to the second embodiment performs the same processing as the control unit 112 according to the first embodiment.
The control unit 212 also receives train information from the train control device 280 via the control wireless communication unit 216 . Furthermore, the control unit 212 sends train position information indicating the position of the train 150 to the train control device 280 via the control wireless communication unit 216 .

The train control device 280 is a device that grasps the position of each train 150 by communicating with all the trains 150 existing within the range of radio transmission of the train control device 280, and realizes interval control between the trains 150. be.

FIG. 8 is a block diagram schematically showing the configuration of portable device 220 according to the second embodiment.
Portable device 220 includes GPS antenna 121, GPS receiver 122, travel information antenna 123, travel information receiver 124, data update unit 127, control unit 230, display unit 131, and audio output unit. 132 , a power supply unit 133 , a train information antenna 234 , a train information reception unit 235 , and an on-rail determination unit 238 .
The GPS antenna 121, the GPS receiving unit 122, the traveling information antenna 123, the traveling information receiving unit 124, the data update unit 127, the display unit 131, the audio output unit 132, and the power supply unit 133 in the second embodiment are the same as those in the first embodiment. GPS antenna 121, GPS receiver 122, travel information antenna 123, travel information receiver 124, data update unit 127, display unit 131, audio output unit 132, and power supply unit 133.

The train information antenna 234 receives radio waves.
The train information receiving section 235 receives train information from the train control device 280 via the train information antenna 234 . The train information includes train identification number, route information, stop limit position information and speed limit information.

The route information indicates the route of the train 150 identified by the train identification number. The route indicates where the train 150 will be on the line in the future, in other words, what route the train 150 will follow. For example, the route information indicates routes of the train 150 to the stop limit position P1, which will be described later, such as the first route R1, the second route R2 and the third route R3 shown in FIG.
The stop limit position information indicates the stop limit position of the train 150 identified by the train identification number. The stop limit position indicates the travel permitted point of the train 150 identified by the train identification number, which is calculated from the on-track position and speed of the train (not shown) preceding the train 150 identified by the train identification number. In other words, the stop limit position is the limit position at which the train 150 identified by the train identification number can safely stop. Position P1 is shown in FIG. 6 as the stop limit position.
The speed limit information indicates the speed limit of the train 150 identified by the train identification number. The speed limit is the allowable limit speed of the train 150 identified by the train identification number, which is calculated from the on-track position and speed of the train (not shown) preceding the train 150 identified by the train identification number. .

Here, the train information receiving section 235 includes a signal receiving section 236 and a demodulating section 237 .
The signal receiver 236 receives signals from the train control device 280 via the train information antenna 234 . The received signal is given to demodulator 237 .
The demodulator 237 demodulates the train information from the train control device 280 from the signal given from the signal receiver 236 . The demodulator 237 gives the demodulated train information to the on-rail determination unit 238 .

Using the train information provided from the train information receiving unit 235, the train determination unit 238 determines whether or not the portable position, which is the position of the portable device 220, is included in the route along which the train 150 travels. Then, the on-rail determination unit 238 gives the determination result to the control unit 230 .
Specifically, the on-rail determination unit 238 includes a route database 239 . Then, when train information is provided from the train information receiving section 235, the on-rail determination section 238 updates the information stored in the route database 239 with the provided train information. Thereby, the train location determining unit 238 can grasp the future route of the train 150 in real time.
Then, the on-rail determination unit 238 refers to the cell-phone position information held by the data update unit 127 to determine whether the cell-phone position indicated by the cell-phone position information is included in the route along which the train 150 travels. do.

Control unit 230 performs substantially the same processing as control unit 130 in Embodiment 1, but even if the calculated train distance is equal to or less than the predetermined allowable limit distance, , the audio output unit 132 is not caused to output an alarm sound.

A part or all of the demodulator 126, the data updater 127, the controller 230, the demodulator 237, and the train presence determination unit 238 described above may be implemented in the memory 10, for example, as shown in FIG. and a processor 11 such as a CPU that executes programs stored in the memory 10 . Such a program may be provided through a network, or recorded on a recording medium and provided. That is, such programs may be provided as program products, for example.

Also, part or all of the demodulator 126, data updater 127, and demodulator 237 may be, for example, as shown in FIG. Alternatively, the processing circuitry 12 may be an integrated processor, ASIC, or FPGA.

The GPS receiving section 122 can be configured with a communication interface for receiving GPS information, and the signal receiving section 125 and the signal receiving section 236 can be configured with a communication interface for receiving radio signals.

Next, the operation of portable device 220 according to Embodiment 2 will be described with reference to FIG.
FIG. 9 is a flow chart of the portable device 220 detecting and notifying of an approaching train.
The flow chart shown in FIG. 9 starts when the portable device 220 is powered on. Note that the portable device 220 can receive GPS information, travel information, and train information when the power is turned on.
In the flowchart shown in FIG. 9, steps that perform the same processing as the steps shown in FIG. 5 are denoted by the same reference numerals as in FIG. 5, and detailed description thereof will be omitted.

The processing in steps S10 to S12 in FIG. 9 is the same as the processing in steps S10 to S12 in FIG. However, in FIG. 9, the process proceeds to step S30 after step S12.

In step S<b>30 , the train information receiving section 235 receives train information from the train control device 280 via the train information antenna 234 . The train information receiving section 235 gives the received train information to the on-rail determination section 238 .

The train determination unit 238 identifies the route along which the train 150 travels based on the route information included in the train information provided from the train information reception unit 235 (S31).
Then, the on-rail determination unit 238 refers to the cell-phone position information held by the data update unit 127 to determine whether the cell-phone position indicated by the cell-phone position information is included in the route along which the train 150 travels. (S32). Then, the on-rail determination unit 238 gives the determination result to the control unit 230 . Then, the process proceeds to step S13.

The processing in steps S13 to S18 in FIG. 9 is the same as the processing in steps S13 to S18 in FIG. However, in FIG. 9, when it is determined in step S18 that the number of times of unfixed positioning is smaller than the allowable limit number of times (Yes in S18), the process proceeds to step S33.

At step S33, the control unit 230 determines whether or not the carrying position is included in the route along which the train 150 travels, based on the determination result at step S32. If the mobile phone position is included in the route along which the train 150 travels (Yes in S33), the process proceeds to step S34, and if the mobile phone position is not included in the route along which the train 150 travels (No in S33), The process proceeds to step S20.

In step S34, control unit 230 determines whether or not the number of times of non-positioning updated in step S12 has increased in step S12. If the number of unfixed positions has increased (Yes in S34), the process proceeds to step S21, and if the number of unfixed positions has not increased (No in S34), the process proceeds to step S19.

The processing in steps S19 to S21 in FIG. 9 is the same as the processing in steps S19 to S21 in FIG.

As described above, according to Embodiment 2, train information from the train control device 280 can also be acquired at a predetermined cycle. It is possible to detect and issue an alarm when the train 150 approaches only the track 260 .

Embodiment 3.
FIG. 10 is a block diagram schematically showing the configuration of notification system 300 according to the third embodiment.
Notification system 300 comprises wireless device 210 and mobile device 320 .
In the second embodiment, a notification system 200 that detects an approaching train corresponding to a branch line based on GPS information from the GPS satellite 170, running information from the train 150, and train information from the train control device 280. showed that. Embodiment 3 describes a notification system 300 that detects the approach of a train 150 in a dead zone where radio signals cannot be directly received, such as a tunnel 302 where GPS information cannot be received.

As shown in FIG. 10, in Embodiment 3, there is a tunnel 302 in the train traveling direction D1, and even in the tunnel 302, the portable device 320 can receive travel information and train information. , LCX (Leaky Coaxial Cable) 362 and LCX antennas 363A and 363B are provided.

The LCX 362 is a leaky coaxial cable, and is used for applications that enable high-quality wireless communication even in closed spaces where it is difficult for radio waves to reach from the outside, or dead zones such as spaces with many obstacles. LCX antennas 363A, 363B are located outside the dead zone, eg, at the entrance/exit of tunnel 302 . By using the LCX 362 and the LCX antennas 363A and 363B, the mobile device 320 can receive the information even in a dead zone where the running information from the train 150 and the train information from the train control device 280 cannot be directly received. can.

However, since the portable device 320 cannot receive GPS information using the LCX 362 and the LCX antennas 363A and 363B, the vicinity of the entrance/exit of the tunnel 302 is the GPS reception limit point where GPS information can be received. becomes. Here, of the two entrances of the tunnel 302, the entrance farther with respect to the traveling direction D1 of the train 150 will be described as the GPS reception limit point P2.

Here, as shown in FIG. 10, when the stop limit position P1 is located beyond the tunnel 302, the GPS reception limit point P2 is closer to the train 150 than the stop limit position P1. . In such a case, even if the GPS reception limit point P2 is regarded as the position of the portable device 320, the position of the portable device 320 is within the range of the stop limit position P1 from the train 150. It can be determined that the route to be taken includes the position of the portable device 320, allowing the portable device 320 to detect the approach of the train 150 and issue an alarm.

On the other hand, as shown in FIG. 11, when stop limit position P1 is inside tunnel 302#, GPS reception limit point P2 is located farther from train 150 than stop limit position P1. In such a case, if the GPS reception limit point P2 is regarded as the position of the portable device 320, the position of the portable device 320 is outside the range of the stop limit position P1 from the train 150. does not include the position of the portable device 320, and the portable device 320 cannot detect the approach of the train 150 and issue an alarm.

As described above, in Embodiment 3, the user 101 of the mobile device 320 can select whether or not to use the GPS information in consideration of the fact that the mobile device 320 enters the dead zone. Details will be described below.

FIG. 12 is a block diagram schematically showing the configuration of portable device 320 according to the third embodiment.
Portable device 320 includes GPS antenna 121, GPS receiver 122, travel information antenna 123, travel information receiver 124, data update unit 127, control unit 330, display unit 131, and audio output unit. 132 , a power supply unit 133 , a train information antenna 234 , a train information reception unit 235 , and an on-rail determination unit 338 .
The GPS antenna 121, the GPS receiving unit 122, the traveling information antenna 123, the traveling information receiving unit 124, the data update unit 127, the display unit 131, the audio output unit 132, and the power supply unit 133 in Embodiment 3 are the same as those in Embodiment 1. GPS antenna 121, GPS receiver 122, travel information antenna 123, travel information receiver 124, data update unit 127, display unit 131, audio output unit 132, and power supply unit 133.
The train information antenna 234 and the train information receiving section 235 in the third embodiment are the same as the train information antenna 234 and the train information receiving section 235 in the second embodiment.

The operation unit 340 receives an operation input from the user.
For example, the operation unit 340 allows the user to select a GPS database use ON setting that is a GPS ON setting that uses GPS information, or selects a GPS database use OFF setting that is a GPS OFF setting that does not use GPS information. accepts input from
Here, the user 101 confirms whether or not GPS information is received in the tunnel 302 based on the number of times of unfixed positioning displayed on the display unit 131 of the portable device 320. Based on the confirmation result, the user 101 selects the GPS database from the operation unit 340. The use ON setting and the GPS database use OFF setting can be switched.
Further, when the GPS database use OFF setting is selected, the operation unit 340 receives a position input from the user. The position input here is treated as the position of the mobile device 320 .
Furthermore, the operation unit 340 accepts an input for setting whether to output an alarm sound when the number of GPS information positioning failures is equal to or greater than the allowable limit number of times. A setting for outputting an alarm sound is also called an output-on setting, and a setting for not outputting an alarm sound is also called an output-off setting.

Based on the input received by the operation unit 340, the control unit 330 operates the portable device 320 with the GPS database use ON setting or the GPS database use OFF setting.
When the GPS database use ON setting is selected, control unit 330 in the third embodiment is the same as control unit 230 in the second embodiment. However, if the setting of not outputting the alarm sound is selected when the number of GPS information positioning failures is equal to or greater than the allowable limit number of times, the control unit 330 outputs the alarm sound to the audio output unit 132 in such a case. don't let

When the GPS database use OFF setting is selected, control unit 330 uses the location input to operation unit 340 instead of the mobile location information given from data updating unit 127 . Here, the train distance calculated using the position input to the operation unit 340 is also referred to as the second train distance, and the train arrival time calculated using the position input to the operation unit 340 is the second train distance. Also called arrival time.
Further, the control unit 330 provides the on-rail determination unit 338 with input position information indicating the position input by the operation unit 340 .
Furthermore, when the setting of not outputting the alarm sound is selected when the number of unmeasured GPS information is equal to or more than the allowable limit number of times, the control unit 330 does not output the alarm sound to the audio output unit 132 in such a case.

The on-rail determining unit 338 uses the train information given from the train information receiving unit 235 to determine whether or not the portable position or the input position is included in the route along which the train 150 travels. Then, the on-rail determination unit 338 gives the determination result to the control unit 330 .

For example, when the GPS database use ON setting is selected, the train determination unit 338 in the third embodiment is the same as the train determination unit 238 in the second embodiment.
On the other hand, when the GPS database use OFF setting is selected, the location determination unit 338 determines whether or not the position indicated by the input position information given from the control unit 330 is included in the route along which the train 150 travels. judge.

Next, the operation of portable device 320 according to Embodiment 3 will be described with reference to FIGS. 13 and 14. FIG.
FIG. 13 is a flow chart of the portable device 320 detecting and notifying of an approaching train when the GPS database use ON setting is selected.
The flowchart shown in FIG. 13 is started when the portable device 320 is powered on. Note that the portable device 320 can receive GPS information, travel information, and train information when the power is turned on.
In the flowchart shown in FIG. 13, the steps that perform the same processing as the steps shown in FIG. 5 or 9 are denoted by the same reference numerals as in FIG. omitted.

First, the control unit 330 causes the display unit 131 to display a selection screen image for selecting the GPS database use ON setting or the GPS database use OFF setting, and receives a selection from the user via the operation unit 340. (S40). Here, it is assumed that the GPS database use ON setting is selected. Then, the process proceeds to step S10.

The processing in steps S10 to S17 shown in FIG. 13 is the same as the processing in steps S10 to S17 shown in FIG. However, in the flowchart shown in FIG. 13, after step S17, the process proceeds to step S41.
Also, the processing in steps S30 to S32 shown in FIG. 13 is the same as the processing in steps S30 to S32 shown in FIG.

In step S41, the control unit 330 determines whether or not a setting has been selected so as not to output an alarm sound when the number of GPS information positioning failures is equal to or greater than the allowable limit number of times. If the setting not to output the alarm sound is selected (Yes in S41), the process proceeds to step S33, and if the setting to output the alarm sound is selected (No in S41), the process proceeds to step Proceed to S18.

The processing in steps S18 to S21 shown in FIG. 13 is the same as the processing in steps S18 to S21 shown in FIG.
Also, the processes in steps S33 and S34 shown in FIG. 13 are the same as the processes in steps S33 and S34 shown in FIG.

According to the flowchart shown in FIG. 13, when the train 150 enters the tunnel 302 as shown in FIG. Travel information from the train 150 and train information from the train control device 280 can be received.

In this case, the portable device 320 can detect an approaching train by performing position comparison based on the received GPS information in the vicinity of the entrance/exit of the tunnel 302, which is the GPS reception limit point P2 at which GPS information can be acquired. In addition, even if the mobile device 320 enters the dead zone and cannot acquire GPS information, if the stop limit position P1 in the train information is equal to or longer than the length of the tunnel 302, the GPS reception limit point P2 does not reach the stop limit position in the train information. Since it is within the range of P1, it can be grasped that the portable device 320 is included in the route of the train 150. FIG. Therefore, it is possible to detect the train approach wherever the user 101 is in the tunnel 302 .

FIG. 14 is a flow chart for the mobile device 320 to detect and notify of an approaching train when the GPS database use off setting is selected.
The flowchart shown in FIG. 14 is started when the portable device 320 is powered on. Note that the mobile device 320 can receive travel information and train information when the power is turned on.
In the flowchart shown in FIG. 14, the steps that perform the same processing as the steps shown in FIG. 5 or 9 are denoted by the same reference numerals as in FIG. omitted.

First, the control unit 330 causes the display unit 131 to display a selection screen image for selecting the GPS database use ON setting or the GPS database use OFF setting, and receives a selection from the user via the operation unit 340. (S50). Here, it is assumed that the GPS database use OFF setting is selected.

When the GPS database use OFF setting is selected, control unit 330 causes display unit 131 to display a position input screen image, and receives an input of the current position from the user via operation unit 340 (S51). Control unit 330 generates input position information indicating the input position, and provides the generated input position information to on-rail determination unit 338 . Then, the process proceeds to step S12.

The processing in step S12 shown in FIG. 14 is the same as the processing in step S12 shown in FIG.
Also, the processing in steps S30 and S31 shown in FIG. 14 is the same as the processing in steps S30 and S31 shown in FIG. However, in the flowchart shown in FIG. 14, after step S31, the process proceeds to step S53.

In step S53, the on-track determining unit 338 determines whether or not the position indicated by the input position information given from the control unit 330 is included in the route along which the train 150 travels. Then, the on-rail determination unit 338 gives the determination result to the control unit 330 . Then, the process proceeds to step S13.

The processing in steps S13 and S14 shown in FIG. 14 is the same as the processing in steps S13 and S14 shown in FIG. However, in the flowchart shown in FIG. 14, after step S14, the process proceeds to step S54.

In step S54, control unit 330 calculates the train distance, which is the distance between the position indicated by the input position information and the train position indicated by the train position information.
In addition, the control unit 330 uses the train distance calculated in step S54, the speed indicated by the speed information, and the traveling direction indicated by the traveling direction information to determine whether the train 150 is located at the train position indicated by the train position information. , the train arrival time, which is the time required to reach the position indicated by the input position information, is calculated (S55). Then, the process proceeds to step S17.

The processing in step S17 shown in FIG. 14 is the same as the processing in step S17 shown in FIG. However, in the flowchart shown in FIG. 14, after step S17, the process proceeds to step S56.

In step S56, control unit 330 determines whether or not a setting has been selected so as not to output an alarm sound when the number of GPS information positioning failures is equal to or greater than the allowable limit number of times. If the setting not to output the alarm sound is selected (Yes in S56), the process proceeds to step S33, and if the setting to output the alarm sound is selected (No in S41), the process proceeds to step Proceed to S18.

The processing in steps S18 to S21 shown in FIG. 14 is the same as the processing in steps S18 to S21 shown in FIG.
Further, the processing in step S33 shown in FIG. 14 is the same as the processing in step S33 shown in FIG. However, in the flowchart shown in FIG. 14, if it is determined in step S33 that the input position is included in the train route (Yes in S33), the process proceeds to step S19.

According to the flowchart shown in FIG. 14, when the user 101 needs to work outside the vicinity of the GPS reception limit point P2, even in a dead zone such as the tunnel 302, the position input as the position of the portable device 320 is detected. and the position of the train in the running information, it is possible to detect the approach of the train.

As described above, according to the third embodiment, train information from the train control device 280 and running information from the train 150 are received via the LCX 362 and the LCX antennas 363A and 363B in the dead zone such as the tunnel 302. As compared with the second embodiment, the following effects (1) to (3) can be obtained.
(1) As shown in FIG. 10, when the stop limit position P1 is beyond the tunnel 302, the portable device 320 sets the GPS reception limit point P2 to the position of the portable device 320, so that the tunnel 302 It is possible to detect the approach of a train even in a dead zone such as

(2) As shown in FIG. 11, when stop limit position P1 is within tunnel 302#, selecting the GPS database use off setting allows portable device 320 to operate as By using the position of the track construction site where the mobile device 320 is located, the train approach can be detected by comparing that position with the train position.

(3) Every time train information is received, the route and stop limit position P1 are updated. It is within the range of position P1, and the train can be detected by selecting the GPS database use ON setting. Therefore, as shown in FIG. 11, even when stop limit position P1 is inside tunnel 302#, user 101 can grasp the number of times train approach information has not been measured from display unit 131 of portable device 320. can. Therefore, train approach detection can be performed flexibly by selecting the GPS database use ON setting when GPS information can be used and selecting the GPS database use OFF setting when GPS information cannot be used.

In the third embodiment, switching between the GPS database use ON setting and the GPS database use OFF setting is not limited to when the power is turned ON, and may be performed at any timing. Moreover, when the number of times of unfixed positioning is equal to or more than the allowable limit number of times, the timing of selecting whether to output an alarm sound may be any timing.

Further, switching between the GPS database use ON setting and the GPS database use OFF setting in Embodiment 3 can also be applied to Embodiment 1 by adding the operation unit 340, and whether or not to output an alarm sound can be applied. This setting selection can also be applied to the first embodiment.

Embodiment 4.
As shown in FIG. 10 , notification system 400 according to Embodiment 4 includes wireless device 210 and mobile device 420 .
In the third embodiment, the notification system 300 capable of detecting train approaching in a dead zone such as a tunnel 302 is shown, but in the fourth embodiment, by preventing erroneous demodulation, the reliability of travel information is improved. A notification system 400 is described that can.

FIG. 15 is a block diagram schematically showing the configuration of portable device 420 according to the fourth embodiment.
Portable device 420 includes GPS antenna 121, GPS receiver 122, travel information antenna 123, travel information receiver 424, data update unit 127, control unit 330, display unit 131, and audio output unit. 132 , a power supply unit 133 , a train information antenna 234 , a train information reception unit 435 , an on-rail determination unit 338 , and a reference clock unit 441 .
The GPS antenna 121, the GPS receiving unit 122, the traveling information antenna 123, the data update unit 127, the display unit 131, the audio output unit 132, and the power supply unit 133 according to Embodiment 4 are the same as the GPS antenna 121, GPS receiving unit 121 according to Embodiment 1. It is the same as the unit 122 , the traveling information antenna 123 , the data update unit 127 , the display unit 131 , the audio output unit 132 and the power supply unit 133 .
The train information antenna 234 in the fourth embodiment is the same as the train information antenna 234 in the second embodiment.
The control unit 330, the on-rail determination unit 338, and the operation unit 340 according to the fourth embodiment are the same as the control unit 330, the on-rail determination unit 338, and the operation unit 340 according to the third embodiment.

The train information receiving section 435 receives train information from the train control device 280 via the train information antenna 234 .
Here, the train information receiver 435 includes a signal receiver 236 and a demodulator 437 .
Signal receiving section 236 in the fourth embodiment is the same as signal receiving section 236 in the second embodiment.

The demodulator 437 demodulates the train information from the train control device 280 from the signal given from the signal receiver 236 .
Then, the demodulator 437 determines whether the demodulated train information is reliable information. For example, the train information transmitted from the train control device 280 includes a predetermined data pattern in one or more predetermined locations, and the demodulator 437 predetermines the demodulated train information. If the prescribed data pattern is included, the train information is determined to be reliable information.
When the demodulator 437 determines that the demodulated train information is reliable information, it notifies the reference clock unit 441 of the fact that the train information has been received, and transmits the demodulated train information to the on-rail determination unit 338. give.

The reference clock unit 441 functions as a reception timing control unit that controls the timing of receiving travel information based on train information determined to be reliable information.
For example, upon receiving notification from the demodulator 437 that the train information has been received, the reference clock unit 441 waits for a predetermined time. 424 to receive travel information.

Upon receiving the notification from the reference clock unit 441 , the travel information receiving unit 424 receives the travel information from the wireless device 210 via the travel information antenna 123 . Then, when the travel information is received, the travel information reception unit 424 stops receiving the signal.
The travel information reception section 424 includes a signal reception section 425 and a demodulation section 426 .

Upon receiving the notification from the reference clock unit 441 , the signal receiving unit 425 starts receiving the signal delivered by radio waves from the wireless device 210 via the travel information antenna 123 . The received signal is provided to demodulator 426 . When signal receiving section 425 receives notification from demodulating section 426 that the travel information has been received, signal reception section 425 terminates signal reception via travel information antenna 123 .
In other words, upon receiving the notification from the reference clock unit 441, the signal receiving unit 425 opens the reception window for receiving the signal via the traveling information antenna 123, and upon receiving the notification from the demodulation unit 426, opens the reception window. close. Therefore, the signal receiver 425 receives signals only while the reception window is open.
Therefore, the signal receiving unit 425 receives the running information when the train information is determined to be reliable information.

Demodulator 426 demodulates the travel information from wireless device 210 from the signal given from signal receiver 425 . Then, the demodulator 426 supplies the train identification number, speed information, and traveling direction information contained in the demodulated running information to the control unit 330, and updates the data of the train position information contained in the demodulated running information. 127.

Part or all of the demodulator 426, the data updater 127, the controller 330, the demodulator 437, the on-rail determination unit 338, and the reference clock unit 441 described above are shown, for example, in FIG. As shown, it can be configured by a memory 10 and a processor 11 such as a CPU that executes a program stored in the memory 10 . Such a program may be provided through a network, or recorded on a recording medium and provided. That is, such programs may be provided as program products, for example.

Part or all of the demodulator 426, data updater 127, demodulator 437, and reference clock unit 441 may be, for example, a single circuit, a composite circuit, or a programmable circuit, as shown in FIG. It can also be composed of a processing circuit 12 such as a parallel processor, a parallel programmed processor, an ASIC, or an FPGA.

The GPS receiver 122 can be configured with a communication interface for receiving GPS information, and the signal receiver 425 and the signal receiver 236 can be configured with a communication interface for receiving radio signals.

Next, the demodulation processing operation of portable device 420 using the reference clock number in the fourth embodiment will be described.
FIG. 16 is a schematic diagram showing an example of receiving signals without using the number of reference clocks as in the third embodiment.
When the number of reference clocks is not used, the signal receiving section 125 always keeps receiving travel information because the reception window is always open, and the demodulation section 126 always performs demodulation.
Therefore, when the train is not on the line, the signal receiver 125 continues to receive noise signals, so the demodulator 126 demodulates the noise information and may erroneously recognize it as running information. . Therefore, in addition to useless demodulation processing, erroneous demodulation may occur, making it impossible to correctly determine the train position.

FIG. 17 is a schematic diagram showing an example of receiving a signal using the number of reference clocks as in the fourth embodiment.
When using the number of reference clocks, the signal receiving section 425 normally does not receive a noise signal because the reception window is closed. Therefore, the demodulator 426 demodulates the noise information, and the possibility of erroneously recognizing it as travel information is reduced.

As described above, according to the fourth embodiment, the reference clock unit 441 controls the reception window of the signal reception unit 425 using the number of reference clocks in relation to the reception of travel information. Obtainable.
Since the portable device 420 does not erroneously demodulate the travel information, the reliability of the travel information is improved.
Further, the mobile device 420 closes the reception window of the signal reception unit 425, waits for the reference clock number after receiving the train information, and then receives a signal for the signal reception unit 425 to demodulate the running information. is received, wasteful demodulation processing can be reduced, and an energy saving effect can be expected.

Although the first to fourth embodiments described above use the speedometer 152 and the ground coil 161, the first to fourth embodiments are not limited to using these. For example, speed and position information may be obtained using a tachometer that detects wheel rotation and calculates relative positions.

100,200,300,400 notification system 101 user 302,302# tunnel 110,210 wireless device 111 I/F unit 112,212 control unit 113 wireless antenna 114 wireless communication unit 120,220, 320,420 Portable device 121 GPS antenna 122 GPS receiver 123 Travel information antenna 124,424 Travel information receiver 125,425 Signal receiver 126,426 Demodulator 127 Data updater 128 GPS database, 129 running information database, 130,230,330 control unit, 131 display unit, 132 audio output unit, 133 power supply unit, 234 train information antenna, 235,435 train information reception unit, 236 signal reception unit, 237,437 demodulator, 238,338 track determination unit, 239,339 route database, 340 operation unit, 441 reference clock unit, 150 train, 151 train control device, 152 speedometer, 160,260 track, 161 ground coil, 362 LCX, 363A, 363B LCX antennas, 170 GPS satellites, 280 train controls.

Claims (12)

A portable device for notifying an approaching train,
a GPS (Global Positioning System) antenna;
a GPS receiver that receives GPS information from GPS satellites via the GPS antenna;
a mobile position specifying unit that specifies a mobile position, which is the position of the mobile device, using the GPS information;
a traveling information antenna;
a traveling information receiving unit that receives traveling information including train position information indicating a train position, which is the position of the train, and speed information indicating a speed of the train, via the traveling information antenna;
Using the handheld location and the train location, calculating a train distance, which is the distance between the handheld device and the train, and using the train distance and the speed, the time for the train to reach the handheld location. A control unit that calculates the train arrival time that is
a display unit that displays a screen image showing at least the train arrival time;
a train information antenna;
a train information receiving unit configured to receive, via the train information antenna, train information including route information indicating a route of the train to a stop limit position indicating a travel permitted point of the train;
an on-rail determination unit that determines whether the mobile position is included in the route;
and an audio output unit that outputs an alarm sound,
When the carrying position is included in the route, the audio output unit outputs the alarm sound when the train distance is equal to or less than an allowable limit distance, which is a distance predetermined as an allowable limit, A portable device characterized in that, when the portable position is not included in the route, the warning sound is not output even if the train distance is equal to or less than the allowable limit distance. 2. The portable device of claim 1, wherein the screen image also shows the train distance. The control unit counts the number of times that the GPS receiving unit has not been able to continuously receive the GPS information, and
3. The mobile device according to claim 1, wherein the screen image also indicates the number of times of non-positioning. The audio output unit is
4. The mobile device according to claim 3, wherein the alarm sound is output when the number of times of non-positioning is equal to or greater than an allowable limit number of times, which is a number of times predetermined as an allowable limit. further comprising an operation unit that receives an input for selecting one of the output-on setting and the output-off setting;
The audio output unit is
When the output-on setting is selected, the alarm sound is output and the output-off setting is selected when the number of times of non-positioning is equal to or greater than an allowable limit number of times, which is a number of times predetermined as an allowable limit. 4. The mobile device according to claim 3, wherein the alarm sound is not output even when the number of times of non-positioning is equal to or greater than the allowable limit number of times when the positioning is not performed. A portable device for notifying an approaching train,
a GPS (Global Positioning System) antenna;
a GPS receiver that receives GPS information from GPS satellites via the GPS antenna;
a mobile position specifying unit that specifies a mobile position, which is the position of the mobile device, using the GPS information;
a traveling information antenna;
a traveling information receiving unit that receives traveling information including train position information indicating a train position, which is the position of the train, and speed information indicating a speed of the train, via the traveling information antenna;
a train information antenna;
a train information receiving unit configured to receive, via the train information antenna, train information including route information indicating a route of the train to a stop limit position indicating a travel permitted point of the train;
an operation unit that receives an input for selecting either one of a GPS ON setting and a GPS OFF setting, and receives an input of the position of the portable device when the GPS OFF setting is selected;
calculating a first train arrival time, which is the time for the train to reach the handheld location, using the handheld location, the train location, and the speed if the GPS on setting is selected; A second train that is the time at which the train reaches the position input from the operation unit using the position input from the operation unit, the train position, and the speed when the off setting is selected. a control unit that calculates the arrival time;
a display unit that displays a screen image showing at least the first train arrival time or the second train arrival time. If the GPS-on setting is selected, it is determined whether or not the mobile position is included in the route, and if the GPS-off setting is selected, the position input from the operation unit is determined. an on-track determination unit that determines whether or not the vehicle is included in the route;
and an audio output unit that outputs an alarm sound,
The control unit calculates a first train distance, which is the distance between the portable device and the train, using the portable position and the train position when the GPS ON setting is selected, Using the first train distance and the speed, the first train arrival time is calculated, and when the GPS off setting is selected, the position input from the operation unit and the train position are used calculating a second train distance, which is the distance between the portable device and the train, and calculating the second train arrival time using the second train distance and the speed,
When the GPS ON setting is selected, the audio output unit outputs the alarm sound when the first train distance is equal to or less than an allowable limit distance, which is a distance predetermined as an allowable limit. and, when the GPS off setting is selected, the alarm sound is not output even if the second train distance is equal to or less than the allowable limit distance. Device. The train information receiving unit determines whether the train information is reliable information,
8. The traveling information receiving unit receives the traveling information when the train information is determined to be reliable information. 10. Portable device according to paragraph. The travel information further includes train identification information for identifying the train and traveling direction information indicating the traveling direction of the train,
The mobile device according to any one of claims 1 to 8, wherein the screen image also shows the train identification information and the traveling direction information. A notification system comprising a radio device mounted on a train and a portable device for notifying the approach of the train,
The wireless device
a radio antenna;
A wireless communication unit that transmits travel information including train position information indicating the train position, which is the position of the train, and speed information indicating the speed of the train, via the wireless antenna,
The portable device
a GPS (Global Positioning System) antenna;
a GPS receiver that receives GPS information from GPS satellites via the GPS antenna;
a mobile position specifying unit that specifies a mobile position, which is the position of the mobile device, using the GPS information;
a traveling information antenna;
a traveling information receiving unit that receives the traveling information via the traveling information antenna;
Using the handheld location and the train location, calculating a train distance, which is the distance between the handheld device and the train, and using the train distance and the speed, the time for the train to reach the handheld location. A control unit that calculates the train arrival time that is
a display unit that displays a screen image showing at least the train arrival time;
a train information antenna;
a train information receiving unit configured to receive, via the train information antenna, train information including route information indicating a route of the train to a stop limit position indicating a travel permitted point of the train;
an on-rail determination unit that determines whether the mobile position is included in the route;
and an audio output unit that outputs an alarm sound,
When the carrying position is included in the route, the audio output unit outputs the alarm sound when the train distance is equal to or less than an allowable limit distance, which is a distance predetermined as an allowable limit, A notification system, wherein the warning sound is not output even if the train distance is equal to or less than the allowable limit distance when the carrying position is not included in the route. A notification system comprising a radio device mounted on a train and a portable device for notifying the approach of the train,
The wireless device
a radio antenna;
A wireless communication unit that transmits travel information including train position information indicating the train position, which is the position of the train, and speed information indicating the speed of the train, via the wireless antenna,
The portable device
a GPS (Global Positioning System) antenna;
a GPS receiver that receives GPS information from GPS satellites via the GPS antenna;
a mobile position specifying unit that specifies a mobile position, which is the position of the mobile device, using the GPS information;
a traveling information antenna;
a traveling information receiving unit that receives the traveling information via the traveling information antenna;
a train information antenna;
a train information receiving unit configured to receive, via the train information antenna, train information including route information indicating a route of the train to a stop limit position indicating a travel permitted point of the train;
an operation unit that receives an input for selecting either one of a GPS ON setting and a GPS OFF setting, and receives an input of the position of the portable device when the GPS OFF setting is selected;
calculating a first train arrival time, which is the time for the train to reach the handheld location, using the handheld location, the train location, and the speed if the GPS on setting is selected; A second train that is the time at which the train reaches the position input from the operation unit using the position input from the operation unit, the train position, and the speed when the off setting is selected. a control unit that calculates the arrival time;
and a display unit that displays a screen image showing at least the first train arrival time or the second train arrival time. A portable device for notifying an approaching train,
a GPS (Global Positioning System) antenna;
a GPS receiver that receives GPS information from GPS satellites via the GPS antenna;
a mobile position specifying unit that specifies a mobile position, which is the position of the mobile device, using the GPS information;
a traveling information antenna;
a traveling information receiving unit that receives traveling information including train position information indicating a train position, which is the position of the train, and speed information indicating a speed of the train, via the traveling information antenna;
a control unit that calculates a train arrival time, which is the time for the train to reach the carrying position, using the carrying position, the train position, and the speed;
a display unit that displays a screen image showing at least the train arrival time,
The control unit counts the number of times that the GPS receiving unit has not been able to continuously receive the GPS information, and
The screen image also shows the number of times of non-positioning,
The portable device
an operation unit that receives an input for selecting one of the output-on setting and the output-off setting;
When the output-on setting is selected, when the number of times of non-positioning is equal to or greater than an allowable limit number of times, which is a number of times predetermined as an allowable limit, an alarm sound is output, and the output-off setting is selected. an audio output unit that does not output the alarm sound even when the number of times of non-positioning is equal to or greater than the allowable limit number of times when the
A portable device characterized by:

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