JP6444119B2 - transceiver - Google Patents

Description

  The present invention relates to a wireless device that transmits emergency information wirelessly.

  Conventionally, devices that transmit emergency information and the like wirelessly have been put to practical use. As such a device, for example, there is a protective radio device mounted on a train, and when operated by a crew member when an abnormality such as an accident occurs, a stop signal is issued to the surroundings as emergency information. The surrounding trains that have received this stop signal are always stopped manually or automatically to prevent accidents such as trains entering the site where an accident or trouble has occurred.

  For example, Patent Document 1 discloses that in a protective radio automatic alarm device mounted on a railway vehicle, even if a serious accident involving damage to the railway vehicle occurs, the protective radio can be reliably reported. Thus, a technique for improving the reliability and certainty as a device for notifying the occurrence of an accident is disclosed.

JP 2008-035695 A

Conventionally, various technologies have been proposed for protective radio devices mounted on trains, but workers working on or near railway tracks are also required to transmit emergency information such as emergency stop during work. Therefore, more reliable transmission is required.
On the other hand, if emergency information such as an emergency stop is transmitted by mistake, it will be directly related to the operation of the train. Therefore, it is necessary to prevent an operator from mistransmitting.

  The present invention has been made in view of the above-described conventional circumstances, and an object of the present invention is to enable a user to reliably transmit emergency information from the spot during work or the like.

In the present invention, in order to achieve the above object, the wireless device has the following configuration.
The wireless device according to the present invention has, as a first characteristic configuration, a first switch and a second switch that receive an operation from a user, and an emergency is performed in response to the first switch being turned on. An output indicating that the transmission of the information is permitted is output so that the user can recognize it. In response to the second switch being turned on in this state, the transmission of the emergency information is started. Is output so that the user can recognize.

  Here, in the first configuration, there is a limit on the time from when the first switch is turned on to when the second switch is turned on, and on the condition that the second switch is turned on within the time limit. It is good also as a structure which starts transmission of information.

  Further, in the first configuration, during the transmission of emergency information, the transmission of emergency information is continued even when the second switch is turned off, and the transmission of emergency information is stopped when the first switch is turned off. It is good.

  Further, in the first configuration, the transmission of the emergency information may be stopped when a predetermined time has elapsed after the transmission of the emergency information is started.

  As a second characteristic configuration, the wireless device according to the present invention transmits emergency information for all of a plurality of preset frequencies.

  Here, in the second configuration, priority may be set for a plurality of frequencies, and emergency information may be transmitted in the order of frequencies with higher priority.

  Further, in each of the above configurations, a configuration in which at least one frequency among a plurality of frequencies is scanned to measure a reception level, and when the reception level exceeds a threshold, transmission of emergency information at the frequency is suppressed. It is good.

  Further, in each of the above configurations, the identification information of the own radio device may be added to the emergency information on at least one of the plurality of frequencies and transmitted.

  Further, in each of the above-described configurations, it may be configured to prohibit transmission of emergency information from the own radio device while receiving emergency information transmitted from another radio device.

  According to the present invention, by operating the radio device, emergency information can be reliably transmitted from the place while the user is working.

It is a figure which shows the schematic structural example of the radio | wireless communications system which concerns on one Embodiment of this invention. It is a figure which shows the example of the functional block of the radio | wireless machine and train radio apparatus which concern on one Embodiment of this invention. It is a figure showing an example of appearance of a radio concerning one embodiment of the present invention. It is a figure which shows the example of the flow regarding transmission of the emergency information by the radio | wireless machine which concerns on one Embodiment of this invention. It is a figure which shows the example of the frequency (channel) used for transmission of the emergency information by the radio | wireless apparatus which concerns on one Embodiment of this invention.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic configuration example of a wireless communication system according to an embodiment of the present invention.
The wireless communication system of FIG. 1 is mounted on m radio devices 10 (10-1 to 10-m) possessed by workers who work on or in the vicinity of the track, and a train traveling on the track (or the concerned N train radio devices 20 (20-1 to 20-n) possessed by train crew) and each base (worker's headquarters, waiting room, work area, etc.) on which the worker is supposed to act ) Control devices 30 (30-1 to 30-k) installed on the control device 30, and management devices 40 that are communicably connected to the control devices 30 via the network 50.

  The radio device 10 is stored in, for example, a worker's headquarters or a waiting room, and is taken out by a worker as necessary. The radio device 10 can communicate directly with other radio devices 10 without going through a base station. In addition, a function of making a call between the wireless devices 10 may be provided.

  The management device 40 stores a wireless device management table individually set for permission or prohibition of use of each wireless device 10, and provides the wireless device management table to each control device 30 at a predetermined timing. Examples of the timing for providing the radio management table include on-time, every elapse of a predetermined time, and when the radio management table is updated.

  The control device 30 instructs each wireless device 10 to permit or prohibit the use according to the setting contents of the wireless device management table provided from the management device 40. In addition to the configuration in which the control device 30 gives an instruction to the wireless device 10 existing in the wireless communication area of the own device by direct wireless communication, the control device 30 performs indirect wireless communication using wireless communication between the wireless devices 10. The configuration may be such that the instruction is given including the wireless device 10 existing outside the wireless communication area of the device itself.

  The wireless device 10 controls the operation state of the wireless device based on the instruction given by wireless communication from the control device 30. That is, for example, when the wireless device 10 receives an instruction to prohibit use, the wireless device 10 locks its own function (for example, communication function) to make it unusable. For example, when the wireless device 10 receives an instruction to permit use, the wireless device 10 unlocks the function of the own device until the specified time (length) has passed, When the specified time elapses, the function of your machine is locked. In addition, for example, when the wireless device 10 has received an instruction to permit use and has been enabled, but automatically remains in a state where wireless communication with any control device 30 has not been possible for a certain period of time, the wireless device 10 automatically Lock the function of the machine and disable it.

  By restricting the use of the wireless device 10 in this way, even if the wireless device 10 is misplaced, lost, stolen, etc., unauthorized use of the wireless device 10 (for example, communication) Intercepting content and sending emergency information).

  Here, the wireless device 10 of this example includes a mechanism for wirelessly transmitting emergency information such as an emergency stop (train protection arrangement). When emergency information is transmitted by the radio device 10, if there is a train in the vicinity thereof, the train radio device 20 mounted on the train receives the notification information indicating that the emergency information has been transmitted. Performed by the wireless device 20.

  As a result, the train crew can grasp that an event that should cause an emergency stop of the train (disasters such as falling rocks or avalanches, or obstacles such as work vehicles) occurred in the vicinity, and promptly decelerate and stop the train. Thus, train accidents caused by the event can be effectively avoided.

Hereinafter, functions of the radio device 10 and the train radio device 20 related to the transmission and reception of emergency information will be described.
In FIG. 2, the example of the functional block of the radio | wireless machine 10 and the train radio | wireless apparatus 20 is shown.
The wireless device 10 includes a wireless communication unit 12 that performs wireless communication using the antenna 11, a control unit 13 that controls the entire wireless device 10, an individual number (an example of identification information) of the own device (wireless device 10), and an emergency A storage unit 14 for storing voice data to be included and transmitted, a microphone unit 15 for inputting wirelessly transmitted sound, a speaker unit 16 for outputting wirelessly received sound, and various texts and images. A monitor unit 17 for displaying, an LED unit 18 for lighting or blinking a color according to the state of the wireless device 10, and an operation unit 19 for receiving an operation from a user are provided.

  The wireless device 10 of this example is configured to transmit the voice stored in advance in the storage unit 14 in the emergency information. As another configuration, a configuration may be adopted in which voice input is received by the microphone unit 15 when emergency information is transmitted, and the input voice is included in the emergency information and transmitted.

  The train radio apparatus 20 is wirelessly received by a radio communication unit 22 that performs radio communication using the antenna 21, a control unit 23 that controls the entire radio device 20, a microphone unit 25 that inputs voice to be transmitted by radio, and the radio. A speaker unit 26 that outputs sound, a monitor unit 27 that displays various texts and images, an LED unit 28 that lights or blinks colors according to the state of the train radio apparatus 20, and an operation unit that receives operations from the user 29.

  When the train radio apparatus 20 of this example receives emergency information from the radio device 10, the train radio apparatus 20 outputs emergency information in a plurality of output formats so that the train crew can be surely recognized. Specifically, for example, a sound for notifying emergency information is output from the speaker unit 26, the LED unit 28 blinks in red, and the monitor unit 27 displays that emergency information is being received. In addition, the train radio apparatus 20 of this example is configured to output from the speaker unit 26 the voice that is included in the emergency information and transmits the voice (or alarm sound) that notifies the emergency information to the memory ( The information may be stored in advance in the storage unit, and a sound (or alarm sound) for notifying emergency information in the memory of the own device may be output from the speaker unit 26 during reception of the emergency information.

FIG. 3 shows an example of the appearance of the wireless device 10.
The wireless device 10 shown in the figure is provided with an antenna 11, a power switch 19a, and a lock switch 19b at the upper part of the housing, a PTT (Push To Talk) switch 19c is provided on the left side of the housing, and an LED section on the front surface of the housing. 18, a speaker unit 16, a monitor unit 17, and a microphone unit 15 are provided.

Of each operation unit 19 (power switch 19a, lock switch 19b, PTT switch 19c), the lock switch 19b corresponds to the first switch, and the PTT switch 19c corresponds to the second switch.
Note that the lock switch 19b (first switch) and the PTT switch 19c (second switch) that accept operations related to the transmission of emergency information are different from the radio 10 main body and other operation units in order to prevent erroneous operations. Different colors and materials. For example, the power switch 19a is black, which is the same as the main body of the wireless device 10, and the lock switch 19b and the PTT switch 19c are colors that easily attract the user's eyes (red, yellow, etc.).

  The power switch 19a is a rotary switch that switches on or off the power. When the power switch 19a is turned clockwise (right) from the power-off rotation position to the power-on rotation position, the power is turned on, and the counterclockwise ( Turn the power off by turning it counterclockwise to the power off rotation position. Further, the power switch 19a also has a function as a volume control, and the speaker volume increases as the power switch 19a is further turned clockwise (right) from the power-on rotation position.

The lock switch 19b is a rotary switch that switches whether or not to release the emergency information transmission lock (whether or not emergency information transmission is permitted). The lock switch 19b rotates clockwise from the reference position clockwise. , The emergency information transmission lock is released, and the emergency information transmission lock is set by turning counterclockwise (counterclockwise) from the reference position to the rotation position of the lock setting.
In this example, the operation of turning the lock switch 19b to the unlocking rotation position is assigned to the operation of turning on the first switch, and the operation of turning the lock switch 19b to the rotation position of the lock setting is turned off. Assigned to the operation.

The PTT switch 19c is a push-down switch for switching whether or not emergency information transmission from the own device is started, and is pushed down in a state where the emergency information transmission lock is released (emergency information transmission is permitted). To start sending emergency information.
In this example, the operation of depressing the PTT switch 19c is assigned to the operation of turning on the second switch, and the operation of releasing the depressing of the PTT switch 19c is assigned to the operation of turning off the second switch.

  The LED unit 18 performs lighting and blinking of colors according to the state of the own device. Specifically, for example, yellow is lit if transmission of emergency information from the own device is permitted, and red is lighted when emergency information is being transmitted from the own device.

  The speaker unit 16 outputs sound included in the emergency information when the emergency information is received from another wireless device 10. Note that a sound (or alarm sound) for notifying emergency information is stored in the storage unit 14 in advance, and the sound (or alarm sound) in the storage unit 14 is output from the speaker unit 16 during reception of emergency information. It is good.

  The monitor unit 17 is information indicating the state of the own device, that is, for example, information indicating that transmission of emergency information from the own device is permitted, and information indicating that the emergency information is being transmitted from the own device. Information, information indicating that emergency information is being received from another wireless device 10, and the like are displayed. The monitor unit 17 can also display other information such as a history including the emergency information transmission time.

The flow of emergency information transmission by the wireless device 10 of this example will be described with reference to FIG.
The worker who wants to transmit emergency information (owner of the radio device 10; user) first turns the lock switch 19b clockwise (right) to the unlocking rotation position (step S11), and locks emergency information transmission. Is released (step S12). That is, the worker can change the state of the wireless device 10 to a state in which transmission of emergency information is permitted by turning on the first switch. In a state where transmission of emergency information is permitted, the fact is displayed on the monitor unit 17, and the LED unit 18 is lit yellow.

A time limit (hereinafter referred to as lock release time) is provided for releasing the emergency information transmission lock, and the control unit 13 of the wireless device 10 uses a timer (not shown) to perform the PTT switch during this lock release time period. It waits for the depression operation of 19c (step S13).
Then, when the unlocking time has passed without the PTT switch 19c being pushed down (step S13; No), the control unit 13 sets the emergency information transmission lock (step S17). That is, the state in which the transmission of emergency information is permitted is terminated, the yellow lighting of the LED unit 18 is stopped, and no emergency information is transmitted even if the PTT switch 19c is pressed down thereafter. In order to transmit emergency information, the user needs to turn off the lock switch 19b once and turn it on again. With this configuration, it is possible to suppress transmission of emergency information due to an erroneous operation.

  On the other hand, when the PTT switch 19c is pushed down during the unlocking period (step S13; Yes), the control unit 13 starts transmitting emergency information from the wireless communication unit 12 (step S14). . That is, the worker can change the state of the wireless device 10 to the state in which emergency information is being transmitted by turning on the second switch within the time limit after turning on the first switch. In a state where the emergency information is being transmitted, the emergency information is continuously sent out by the wireless communication unit 12, the fact is displayed on the monitor unit 17, and the LED unit 18 is lit red.

There is a time limit (hereinafter referred to as emergency information transmission time) for transmission of emergency information, and the control unit 13 of the wireless device 10 turns the lock switch 19b counterclockwise (counterclockwise) during this emergency information transmission time period. It waits for an operation to turn to the rotation position of the lock setting (step S15).
Then, when the emergency information transmission time has elapsed without the operation of turning the lock switch 19b counterclockwise (counterclockwise) to the rotation position of the lock setting (step S15; No), the control unit 13 Transmission is automatically stopped (step S16). That is, even if the operator does not perform any operation, the state in which emergency information is being transmitted is automatically terminated. This predetermined time is measured by the control unit 13 using a timer (not shown), and the predetermined time is a certain amount of time (a certain amount of time so that the train radio device 20 that is the device on the receiving side can receive the emergency information reliably) For example, it is preferably several minutes or more.

Further, the control unit 13 also stops the transmission of emergency information when an operation of turning the lock switch 19b counterclockwise (counterclockwise) to the rotation position of the lock setting is performed during the emergency information transmission time period (step S1). S16). That is, the worker can end the state in which emergency information is being transmitted by his / her own intention.
Note that even when the depression of the PTT switch 19c is released, the transmission of emergency information continues without being stopped. That is, the switch operated to start the transmission of emergency information is different from the switch operated to stop the transmission of emergency information.
When the state in which the emergency information is being transmitted ends, the wireless device 10 sets the emergency information transmission lock (step S17), and the state in which the emergency information transmission is permitted ends.

  In this way, in this example, the stepwise operation of a plurality of switches is requested for the transmission of emergency information, so that erroneous transmission of emergency information can be effectively suppressed. In addition, since the user can easily recognize the state of the wireless device 10 by displaying the monitor unit 17 or turning on the LED unit 18, the user (worker) of the wireless device 10 can more reliably transmit emergency information. Can be done.

  Next, the frequency (channel) used for transmitting emergency information by the wireless device 10 of this example will be described with reference to FIG. Note that the train radio apparatus 20 of this example can use three channels, “up”, “replacement”, and “down”, and which channel is used (whether it is waiting for reception) is wireless. It cannot be specified on the machine 10 side.

Therefore, as an example, the wireless device 10 (control unit 13) of the present example, as shown in FIG. 5A, the three channels set in advance in the order defined in advance (in this example, "up", The transmission of emergency information is repeated while switching channels (in this example, each 800 msec) in the order of “exchange” and “downlink”.
As a result, even if the channel on which the train radio apparatus 20 is waiting to be received is unknown, the emergency information transmitted through one of the channels is transmitted to the train radio apparatus 20 during the cycle of “up”, “replacement”, and “down”. Since it is received, emergency information can be more reliably received by the train radio apparatus 20.

In the example of FIG. 5A, all channels are handled equally, but a specific channel may be preferentially handled as exemplified in FIGS. 5B and 5C.
FIG. 5B is an example of a case where the priority of the “uplink” channel is higher than that of other channels. That is, the number of times emergency information is transmitted on a high-priority “uplink” channel by switching channels in the order of “uplink”, “exchange”, “uplink”, “downlink”, “uplink”, etc. (Frequency) is increased.
FIG. 5C shows another example in which the priority of the “uplink” channel is higher than that of the other channels. That is, the time allocated to the “uplink” channel is made longer than the other channels (“exchange” and “downlink” channels), so that the emergency information is transmitted on the “uplink” channel having a high priority. The time is long.

With such a configuration, when there is a high possibility that the train radio apparatus 20 is “up” and waiting for reception, the emergency radio information can be received by the train radio apparatus 20 more quickly and reliably. A specific channel may be preferentially handled by a combination of these methods or other methods.
Moreover, it does not have to be a configuration in which all the channels are handled equally or a configuration in which a specific channel is preferentially processed. For example, a configuration may be adopted in which emergency information is transmitted by selecting a channel at random.

FIG. 5 (d) shows an example in which the ID (identification information) of the own device (wireless device 10) is added to the emergency information and transmitted. In the figure, ID data is transmitted on the “downlink” channel immediately before the downlink emergency information. The ID data is transmitted as data different from the emergency information as an MSK (Minimum Shift Keying) code. Note that the “down” channel is a channel used for operation by another radio 10 (not the train radio apparatus 20 in the train) possessed by surrounding workers. Basically, ID data is transmitted on the other channels.
The other wireless device 10 that has received the emergency information displays the ID data added to the emergency information on the monitor unit 17. As a result, the user (worker) of the other wireless device 10 that has received the emergency information can grasp which wireless device 10 has transmitted the emergency information (who has transmitted the emergency information).

Next, a mechanism for preventing interference will be described.
A first mechanism for preventing interference is to prohibit transmission of emergency information from the own device while the wireless device 10 is receiving emergency information transmitted from another wireless device 10. Specifically, when the control unit 13 detects that the wireless communication unit 12 is receiving emergency information from another wireless device 10, the control unit 13 suppresses transmission of emergency information from the own device.
Thereby, since emergency information is not transmitted simultaneously from the plurality of radio devices 10, it is possible to prevent the occurrence of interference (interference).

The second mechanism for preventing interference is that the radio 10 scans each frequency (channel) that can be used by the train radio apparatus 20 to measure the reception level, and receives the reception level (for example, reception electric field strength). For a channel for which the value exceeds the threshold, transmission of emergency information on the channel is canceled. It is desirable to scan each frequency at a channel other than the channel that is transmitting emergency information, that is, at a time other than when emergency information is transmitted. Also, it is configured not to scan all of the plurality of frequencies that can be used by the train radio apparatus 20, but to scan channels that are likely to be used by the train radio apparatus 20 (for example, “uplink” channels). Also good. In this case, the control unit 13 matches the reception channel of the wireless communication unit 12 with the uplink channel, and measures the reception level of the uplink channel when it is not transmitting the uplink channel.
Note that the threshold of the reception level is not set to a level at which reception is possible, but is preferably set to a high level when the train radio apparatus 20 is used in the vicinity of the own aircraft.
Thereby, the train radio apparatus 20 is operated at a position very close to the radio device 10, and further, the train radio apparatus 20 has issued a protective alarm, or the train radio apparatus 20 receives the protective alarm and stops after stopping. When there is a high possibility of communication with the host device (not shown), the channel used by the train radio device 20 can be determined by the level of the reception level, so that emergency information is transmitted on that channel. By prohibiting, interference (interference) can be prevented.

As described above, in the wireless communication system of this example, the wireless device 10 is configured as follows.
The portable wireless device 10 possessed by a person is provided with a function of wirelessly transmitting emergency information (for example, emergency information such as emergency stop) for the train wireless device 20. As a result, when a worker who works on or near a track learns on the site any event (such as a rockfall or an avalanche) that should cause an emergency stop of the train, Emergency information (for example, emergency information such as emergency stop) can be transmitted on the spot.
More specifically, the wireless device 10 has a first switch (lock switch 19b) and a second switch (PTT switch 19c) that receive an operation from the user, and the first switch is turned on. In response, an output is made so that the user can recognize that the transmission of emergency information is permitted, and the transmission of emergency information is started in response to the second switch being turned on in this state. In addition, it is configured so that the user can recognize that the emergency information is being transmitted. As described above, the transmission of emergency information requires a step-by-step operation of turning on the second switch after turning on the first switch, thereby effectively suppressing erroneous transmission of emergency information. it can. In addition, since the state of the wireless device is output so that the user can recognize it (display output on the screen, audio output, LED lighting, etc.), the wireless device user (worker) can more reliably transmit emergency information. Can be done.

In addition, the wireless device 10 sets a limit on the time from turning on the first switch to turning on the second switch, and on the condition that the second switch is turned on within the time limit. Configured to start transmission. That is, since the emergency information transmission is not started unless the first switch and the second switch are continuously turned on within the time limit, the erroneous transmission of the emergency information can be further reduced.
In addition, during the transmission of emergency information, the wireless device 10 continues to transmit emergency information even if the second switch is turned off, and stops transmitting emergency information when the first switch is turned off. Configured. That is, since the switch operated to start transmission of emergency information is different from the switch operated to stop transmission of emergency information, erroneous stop of transmission of emergency information can be effectively suppressed. Further, once the emergency information is transmitted, it is transmitted even if the second switch is turned off, so that the emergency information can be reliably received by the receiving device. Furthermore, when the second switch is a switch that needs to be operated like a PTT button, the operability for the user can be improved.
Further, the wireless device 10 is configured to stop the transmission of emergency information when a predetermined time has elapsed since the start of transmission of emergency information. Thereby, since the emergency information transmission is automatically stopped without the user's operation, the convenience of the user is improved.
In addition, the wireless device 10 has a configuration in which the first switch and the second switch have colors or materials different from those of the wireless device 10 main body. Thereby, the user can easily determine which switch among the plurality of switches provided in the wireless device 10 should be operated when an emergency such as transmitting emergency information occurs, and the user operability can be improved. It can be improved.

Further, the wireless device 10 is configured to transmit emergency information for all of a plurality of preset frequencies (channels). Thus, the emergency information can be sent to the train radio device 20 without specifying which of the plurality of frequencies the receiving device (in this example, the train radio device 20) that wants to receive the emergency information is waiting to receive. Since it can transmit, the emergency information with respect to the train radio | wireless apparatus 20 can be transmitted more reliably. In other words, the emergency information can be reliably received regardless of the frequency at which the receiving device is waiting.
In addition, the wireless device 10 is configured to transmit the identification information of the own wireless device added to the emergency information at at least one of a plurality of frequencies. As a result, the receiving device can know which radio device is transmitting the emergency information.
Further, the wireless device 10 is configured to prohibit transmission of emergency information from its own wireless device while receiving emergency information transmitted from another wireless device. Thereby, it is possible to prevent the emergency information from interfering, and the emergency information can be more reliably received by the receiving device.
In addition, the wireless device 10 scans at least one of a plurality of frequencies to measure a reception level, and when the reception level exceeds a threshold value, the transmission of emergency information at the frequency is suppressed. did. As a result, when another radio device (for example, the train radio device 20 parked in the vicinity) is talking with another radio device different from the own radio device at the frequency in question, the call is called emergency information. Can be prevented from interfering with the transmission of. In other words, the train radio device is operated at a position very close to the radio, and further, the train radio device is performing a protective alarm, or the train radio device communicates with its host device after receiving the protective alarm and stopping. The frequency used by the train radio device can be determined by the level of the reception level when there is a high possibility of being used. Therefore, by prohibiting the transmission of emergency information at that frequency, interference (interference) can be prevented. Occurrence can be prevented.
Further, the wireless device 10 may be configured to set priorities for a plurality of frequencies and transmit emergency information in the order of frequencies with higher priorities. That is, for example, by setting priorities in order of frequencies that are most likely to be used on the train radio apparatus side, the train radio apparatus can receive emergency information more quickly and reliably.

Here, the configuration of the system and apparatus according to the present invention is not necessarily limited to the configuration described above, and various configurations may be used.
For example, in the above-described embodiment, the case where the wireless device 10 is a portable type has been described as an example, but it is needless to say that the wireless device of the present invention is not limited to a portable type.
In addition, the train in the above-described embodiment includes a Shinkansen, a monorail, a linear motor car, and the like.
Further, in the above-described embodiment, the case where the emergency information wirelessly transmitted by the wireless device 10 is an emergency stop for surrounding trains has been described as an example. However, the present invention is not limited to this, and can be applied to various emergency information that should be known to the surroundings. For example, it can be used to transmit a protective alarm signal for emergency stop of a train, information indicating the progress or completion of work, or information indicating an emergency notifying the occurrence of a failure or emergency.
The present invention can also be provided as, for example, a method or method for executing processing according to the present invention, a program for realizing such a method or method, or a storage medium for storing the program. .

  The present invention can be applied to various wireless devices that transmit emergency information wirelessly.

10: Radio equipment, 20: Train radio equipment, 30: Control equipment, 40: Management equipment, 50: Network,
11: Antenna, 12: Wireless communication unit, 13: Control unit, 14: Storage unit, 15: Microphone unit, 16: Speaker unit, 17: Monitor unit, 18: LED unit, 19: Operation unit, 19a: Power switch, 19b: Lock switch, 19c: PTT switch,
21: Antenna, 22: Wireless communication unit, 23: Control unit, 25: Microphone unit, 26: Speaker unit, 27: Monitor unit, 28: LED unit, 29: Operation unit

Claims (7)

A radio that transmits emergency information wirelessly,
A first switch and a second switch for receiving an operation from the user;
In response to the first switch being turned on, an output is made so that the user can recognize that the transmission of emergency information is permitted, and in this state, the second switch is turned on. Depending on the situation, the emergency information transmission is started and the emergency information is being transmitted so that the user can recognize it.
During the transmission of emergency information, the wireless device continues to transmit emergency information even if the second switch is turned off, and stops transmitting emergency information when the first switch is turned off. . The wireless device according to claim 1,
There is a limit on the time from when the first switch is turned on until the second switch is turned on, and the emergency information is transmitted on condition that the second switch is turned on within the time limit. A radio characterized by starting. In the wireless device according to claim 1 or 2 ,
A wireless device that transmits emergency information for all of a plurality of preset frequencies. The wireless device according to claim 3 ,
A wireless device that sets priority to the plurality of frequencies, and transmits emergency information in order of the frequency having the highest priority. In the radio according to claim 3 or claim 4 ,
A radio device that scans at least one frequency among the plurality of frequencies, measures a reception level, and suppresses transmission of emergency information at the frequency when the reception level exceeds a threshold value. In the radio apparatus according to any one of claims 3 to 5,
A wireless device characterized in that identification information of its own wireless device is added to emergency information at at least one of the plurality of frequencies and transmitted. The radio device according to any one of claims 1 to 6 ,
A wireless device that prohibits transmission of emergency information from its own wireless device while receiving emergency information transmitted from another wireless device.

Images