JP2016126707A - Emergency information reception device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an emergency information reception device capable of safely offering emergency information without causing a driver's erroneous operation by evaluating vehicle control difficulty when receiving emergency information.SOLUTION: Provided is an emergency information reception device 1 which comprises: broadcast receiving means 18 for receiving emergency warning broadcast; display means 5 capable of displaying emergency information on a screen; and audio output means 8 capable of issuing audio messages. When the broadcast receiving means receives the emergency warning broadcast, the emergency information reception device determines whether a vehicle is in motion in the manual mode or automatic mode (first determination). When the vehicle has been judged as being in motion in the manual mode in the first determination, the emergency information reception means determines whether the vehicle is controllable (second determination). When the vehicle has been judged as controllable in the second determination, the emergency information reception means offers the emergency warning broadcast audiovisually.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an emergency information receiving apparatus that safely notifies emergency information when receiving emergency information.

  Emergency warning system (Emergency Warning System: EWS) is in a standby state using the emergency warning signal stipulated in Article 2, Paragraph 1, Item 84, Nos. 2 to 84, Article 5 of the Ordinance of the Ministry of Internal Affairs and Communications. This broadcast is performed by forcibly starting up an emergency warning signal receiver such as a television or radio. It aims to contribute to the prevention and mitigation of disaster damage by notifying emergency warning broadcasts when a large-scale disaster such as an earthquake occurs or when a tsunami warning is issued.

  However, as an example of an emergency warning broadcast, if a driver is suddenly notified of an urgent notification such as “Please watch out for strong shaking” in the earthquake early warning, the driver will be surprised and upset, You may lose your usual calmness and suddenly stop or handle. Also, it is possible to assume that the vehicle will move unnaturally and cause trouble for other vehicles even if the vehicle is not suddenly stopped or steered. In addition, an emergency warning broadcast is suddenly notified during support driving, and the driver is upset, switching to manual driving even though vehicle control is difficult, and erroneously operating the vehicle. There is a possibility.

  As a technique for notifying emergency information in consideration of safety when broadcasting an emergency warning, for example, there are techniques disclosed in Patent Document 1 and Patent Document 2. These technologies assume that the driver of the vehicle cannot watch or listen to the broadcast at the time of broadcasting the emergency warning. In such a case, the contents of the broadcast are stored, the vehicle is stopped, and the safety warning is issued after ensuring the safety. Information is provided.

  Patent Document 3 discloses a technique for detecting a dangerous place such as an intersection or a sharp curve where an accident is likely to occur with a navigation device and guiding the stop position while avoiding the dangerous place. Furthermore, Patent Document 4 discloses a technique for notifying emergency warning broadcasting in consideration of driver safety.

JP 2007-295453 A JP 2007-251606 A JP 2007-241471 A JP 2005-294960 A

  However, in the technology disclosed in Patent Document 1 or Patent Document 2, emergency information is reported even in situations where the driver has to focus more on driving than normal times, such as when driving on a highway or driving on a sharp curve. As a result, the driver may be surprised to cause an erroneous operation. In addition, the technique disclosed in Patent Document 3 does not consider emergency information notification means, and the same problem occurs. Furthermore, the technique disclosed in Patent Document 4 does not disclose a method for determining the difficulty of vehicle control when receiving an emergency warning broadcast.

  The present invention has been made in consideration of the above circumstances, and its purpose is to determine the difficulty of vehicle control at the time of receiving emergency information, so as not to induce an erroneous operation to the driver, and to make emergency information safe. It is to provide an emergency information receiving apparatus capable of informing.

  According to the invention described in claim 1, the emergency information receiving device (1) includes a broadcast receiving means (18) for receiving an emergency warning broadcast, a display means (5) capable of displaying emergency information as an image, and a voice. Voice output means (8) capable of emitting When the broadcast receiving means receives the emergency warning broadcast, it is determined whether the vehicle is in manual driving or in support driving (first determination). In the first determination, if the vehicle is in manual operation, it is determined whether or not the vehicle is in a situation where control is difficult (second determination). In the second determination, when the vehicle is not in a situation where control is difficult, an emergency warning broadcast is notified by an image and sound.

  According to this configuration, when the vehicle is being manually driven by the driver, it is possible to notify the emergency warning broadcast after confirming that the vehicle is not in a difficult-to-control situation. Therefore, since the driver can afford to watch the emergency warning broadcast safely, the driver can notify the emergency broadcast safely.

  According to the invention described in claim 2, the emergency information receiving device (1), when the vehicle is in a situation that is difficult to control in the second determination, displays an emergency warning by an image and sound on the display means. A first command input means (20) that can select broadcast notification and a second command input means (21) that can select voice emergency alert broadcast notification are displayed.

  According to this configuration, it is possible to select whether to receive an emergency warning broadcast notification using an image and sound, or to receive an emergency warning broadcast notification based only on sound, based on the judgment of the driver. Therefore, since it is possible to select what kind of emergency warning broadcast is to be received at the judgment of the driver according to the driver's margin and the degree of vehicle control difficulty, the emergency broadcast can be safely notified. it can.

  According to the invention described in claim 3, in the first determination, when the vehicle is in the assistance driving mode, it is determined whether or not the vehicle is in a situation where control is difficult (third determination). In the third determination, if the vehicle is not in a situation where it is difficult to control, the command input means (22) for switching the vehicle to manual operation is set in the display means so as to be inputable.

  According to this configuration, the vehicle is out of a situation where control is difficult, and it is possible to receive notification of an emergency warning broadcast after switching the vehicle control from support driving to manual driving. Can be notified.

  According to the invention described in claim 4, in the third determination, the emergency information receiving device (1) is a command for switching the vehicle to manual operation on the display means when the vehicle is in a situation that is difficult to control. The input means is in a state incapable of input.

  According to this configuration, when the vehicle control is in a support operation and the vehicle control is difficult, it is not possible to switch to the manual operation. Therefore, for example, it is possible to prevent the driver from rotating and switching to manual operation by mistake, so that safe operation of the vehicle can be ensured.

1 is a block diagram schematically showing a configuration example of an emergency information receiving apparatus according to an embodiment. The flowchart which shows the processing flow in an emergency information receiver Figure showing an example of the display screen Figure showing an example of the display screen Figure showing an example of the display screen The figure for demonstrating an example of the table for the factor for determining the difficulty of vehicle operation, and a weight value

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a functional block diagram schematically showing an electrical configuration of the emergency information receiving apparatus according to the present embodiment. As the emergency information receiving device 1 (hereinafter, simply referred to as “receiving device 1”), for example, a comprehensive device including an emergency information receiving function, a navigation function, a vehicle control function, and other functions can be used.

  The receiving device 1 includes a control circuit 2 (control means). The control circuit 2 includes a position detector 3, a map data input device 4, a display device (display means) 5, an operation switch group 6, a voice controller 7, a remote control sensor 11, an external memory 12, a transceiver 13, a broadcast receiver ( Broadcast receiving means) 18 and the like are connected. The control circuit 2 controls these.

  A speaker (voice output means) 8, a voice recognition device 9, and a microphone (voice input means) 10 are connected to the voice controller 7. The control circuit 2 plays a role of controlling a function for receiving emergency information, a navigation function, a vehicle control function, and other functions.

  The control circuit 2 is constituted by a microcomputer provided with a CPU, ROM, RAM, I / O interface and a bus line (not shown) for connecting them. The ROM stores, for example, emergency information receiving and navigation control programs, and the RAM stores road map data acquired from the map data input device 4 and the transceiver 13 in addition to processing data at the time of program execution. Received data is stored. The control circuit 2 performs emergency information reception, route search, route guidance, and the like by causing the CPU to execute a control program stored in the ROM. The control circuit 2 controls various functions of the emergency information receiving device 1.

  The position detector 3 includes, for example, a GPS (Global Positioning System) receiver 14, a gyroscope 15, and an acceleration sensor 16. The GPS receiver 14 detects (positions) the current position of the vehicle based on the transmission radio wave from the GPS artificial satellite. The gyroscope 15 detects the rotational angular velocity of the vehicle. The acceleration sensor 16 detects acceleration in three axial directions orthogonal to each other. The position detector 3 has a function of calculating current position information of the vehicle.

  The map data input device 4 is configured using a large-capacity information recording medium such as a CD-ROM, DVD-ROM, hard disk, and nonvolatile semiconductor memory. The information recording medium stores various databases such as road map data all over Japan, a facility name database arranged in alphabetical order, for example, and a telephone number database indicating correspondence between telephone numbers and facilities.

  The map data input device 4 has a function of reading these data from the information recording medium. The control circuit 2 detects the current position, traveling direction, speed, travel distance, current time, and the like of the vehicle based on the detection signals of the sensors. Furthermore, detection signals from a steering rotation sensor, a wheel sensor of each rolling wheel, or the like may be used.

  The display device 5 includes, for example, a color liquid crystal display capable of displaying images such as maps and characters. The surface of the color liquid crystal display has a touch panel function for operation input. The display device 5 is configured such that when a predetermined portion displayed on the screen is touch-operated, a command signal (command) corresponding to the operation position and operation content is input. The display device 5 is installed near the driver's seat of the vehicle, for example.

  The operation switch group 6 includes mechanical switches arranged around the display device 5 and touch panel switches formed on the display of the display device 5. The operation switch group 6 gives various commands to the control circuit 2 in accordance with operations of these mechanical switches and touch panel switches.

  The voice recognition device 9 collates the voice input through the microphone 10 with the recognition dictionary data stored therein, and recognizes the input voice. The voice controller 7 includes a voice synthesis circuit, an amplifier, and the like, and is connected to a speaker 8 and a voice recognition device 9. The voice controller 7 controls the voice recognition device 9 and outputs a voice recognition result to the control circuit 2. Further, an audio output signal is output to the speaker 8 based on an audio output command from the control circuit 2. The sound output from the speaker 8 is a sound related to route guidance, a sound related to operation explanation, a sound of emergency alert broadcasting, or the like. The remote control sensor 11 is configured to receive an operation signal from the remote control 17 and give it to the control circuit 2.

  The external memory 12 is configured by a data rewritable nonvolatile memory such as a flash memory. The external memory 12 stores, for example, program software for supporting information recording media of other standards, and stores and recalls various data such as a history of a running track and arbitrary image data captured by a digital camera. It is provided to go. Furthermore, the external memory 12 has a function of storing voice information, image information, character information, and the like input from the receiving device 1 (storage means).

  The transceiver 13 includes, for example, a VICS (registered trademark) sensor unit, an FM multiplex broadcast tuner (none of which is shown), a wireless network service (for example, G-BOOK (registered trademark)), and the like. Traffic information (congestion, congestion, speed regulation, lane regulation, accident occurrence point, breakdown car stop point, etc.) to be reported to the vehicle driver from external information sources such as VICS stations, broadcasting infrastructure, and information centers Etc.), and peripheral information such as commercial facilities and tourist facilities located in the traveling direction.

  The transceiver 13 may be configured to include an RDS-TMC (Radio Data System-Traffic Massage Channel) tuner. The event data as described above may be received through a communication infrastructure such as a satellite communication system, a mobile phone line, a wireless LAN, or a probe car communication system. The above-described map database may be obtained from the above external information providing source. The broadcast receiver 18 has a function of receiving broadcasts such as television broadcasts and radio broadcasts, and emergency alert broadcasts are received by the broadcast receiver 18.

  FIG. 2 is a diagram illustrating an example of a flowchart illustrating a processing flow of the reception device 1 according to the present embodiment. First, when the broadcast receiver 18 receives an emergency warning broadcast (step S100), the receiving device 1 determines whether the vehicle is currently in a manual driving state or a support driving state (first determination). (Step S101). Specifically, the control circuit 2 performs the first determination.

  Here, the assisted driving is any of a case where the vehicle driving support system provides some assistance for the driving operation of the driver, a case where a part of the driving operation performed by the driver is in charge, and a case where the entire vehicle is autonomously driven. May be.

  Next, when the vehicle is being manually operated (“Yes” in step S101), the receiving apparatus 1 determines whether or not the vehicle state is difficult to control the vehicle (second determination). (Step S102). Here, the state where vehicle control is difficult means that various factors surrounding the vehicle, such as high-speed driving, cornering operation, and snowy road, require the driver's attention, and the state where advanced vehicle control is required. means. Specifically, the control circuit 2 performs the second determination.

  The determination as to whether or not the vehicle control is difficult is made in consideration of the factors shown in FIG. FIG. 6 shows an example of factors considered during vehicle driving control, and a weight value is assigned to each factor. The weight value is given in advance in consideration of, for example, analysis results of past accident causes, and for example, it is assumed that the greater the weight value, the higher the degree of risk.

  For example, whether the vehicle is in a constant speed state or an acceleration state can be detected by analyzing a signal from an accelerator opening degree, an acceleration sensor, or the like. For example, in the acceleration state, for example, a weight value “1” is given.

  Further, for example, by analyzing the steering angle of the steering wheel, the blinker, the signal from the acceleration sensor, or the like, it is possible to detect whether the vehicle is in a cornering state or a left-right turn state. For example, a weight value “2” is assigned in the cornering state. Further, the forward speed can be detected from a gear, a speed pulse, and the like. For example, when it exceeds 60 km / h, it is recognized as a high speed operation state, and for example, a weight value “2” is given.

  In addition, for example, whether the vehicle is traveling in an area where a straight road continues, whether it is traveling in an area where a sharp curve (such as ninety-nine breaks) continues on a mountain road, or whether it is approaching an intersection, tunnel, bridge, etc. The road situation surrounding the vehicle can be grasped from the navigation map and the own vehicle position acquired from the GPS. Further, when the width of the road is narrow, further driver's attention is required, which can also be grasped from the own vehicle position acquired from the navigation map and GPS. In these cases, for example, a weight value “2” is given. Whether it is backlit or night (the surroundings are dark) can be detected from the navigation map, the vehicle position, the light switch, and the like.

  In addition, regarding weather, whether it is rainy or misty can be detected from wipers, fog lamps, ABS operating conditions, etc. Weather such as snow can be detected from ABS, vehicle stability control system, outside temperature and the like. Also in these cases, a weight value is given in consideration of a state in which each vehicle control is difficult.

  Here, according to FIG. 6, for example, when the vehicle is in a high-speed driving state, in a cornering state, and the weather is rainy, the total weight value is “1 + 2 + 2 = 5”. For example, when the determination threshold level is set to “3 (less than)”, the sum of the weight values is “3” or more, so that it is determined that vehicle control is difficult.

  Here, when it is determined that the vehicle control is difficult (“Yes” in step S102), the reception device 1 displays the screen display A shown in FIG. In the screen display A shown in FIG. 3, for example, “Receiving emergency warning (earthquake) information” is displayed, and it is displayed that an emergency warning broadcast is currently being received. Further, the screen display A displays a switch area (command input means) 20 displayed as “notify by image and voice” and a switch area (command input means) 21 indicated as “notify only by voice”. Is done.

  The switch areas 20 and 21 are areas that can be input by the touch panel. The driver can confirm the screen display A when the driver can leave the state where the vehicle control is difficult and the screen display A can be confirmed. Then, it is possible to select to press the switch area 20 or 21 according to the driver's intention and determination. Until the driver presses the switch area 20 or 21, the screen display A is continuously displayed on the display device 5.

  Next, when the driver selects to press the switch area 20 (the switch area 20 is pressed in step S104), the receiving apparatus 1 notifies the emergency alert broadcast with an image and sound (step 106). If the notification is completed, the emergency alert notification control of the receiving device 1 is completed (step 107). Here, if the user is suddenly notified with a voice that cannot be heard normally, it is assumed that the driver will be surprised and swayed, which may cause a dangerous situation. Therefore, in the present embodiment, it is possible to make a notification by using a car navigation sound that is familiar to the user or a family sound sampled in advance, for example, instead of a sound that cannot be heard. As a result, it is possible to prevent the driver from moving and rotating by avoiding a sudden and unfamiliar voice notification, so that the driver can be safely notified of the emergency warning broadcast. Moreover, when the receiving apparatus 1 is receiving the emergency alert broadcast by a character, you may make it alert | report the emergency alert broadcast by a character by using the reading-out function of the said character information.

  If the driver chooses to press the switch area 20, if the vehicle is out of difficult control and there is a margin in driving, for example, the driver can stop at a safe place and the driver can settle down and check the emergency alert broadcast. Assumes that Here, when the emergency alert broadcast is only sound, the emergency alert broadcast is notified only by sound. When the emergency alert broadcast is received, recording of the broadcast content (recording and recording) from the start of the broadcast is started. The broadcast content is recorded in the external memory 12, for example. When the switch area 20 or 21 is pressed, this recording and the recorded content are reproduced. By doing this, it is possible to watch the emergency alert broadcast from the beginning even if it takes some time from the start of the emergency alert broadcast until the driver can calm down and receive the broadcast notification. It becomes.

  When pressing of the switch area 21 is selected in step 104, the emergency alert broadcast is notified only by voice (step 105), and then the display device 5 displays the screen display A and waits (step 103). When the driver chooses to press the switch area 21, the vehicle is out of a difficult state, and there is room to listen to the sound, but there is not enough room to view both the image and the sound. Is assumed. For example, when visibility is good and driving at low speed on a straight road.

  If it is determined in step 102 that vehicle control is not difficult (“NO” in step S102), the receiving apparatus 1 notifies the emergency alert broadcast with an image and sound (step 106), and the notification is completed. Then, the emergency alert notification control of the receiving device 1 ends (step 107).

  If it is determined in step 101 that the vehicle is not being manually operated (“No” in step 101), that is, if the vehicle is in the assisting driving state, the receiving device 1 is in a state in which vehicle control is difficult. It is determined whether or not there is (third determination) (step S201). The content of the determination in step 201 is the same as the determination described in step 102 above. Specifically, the control circuit 2 performs the third determination.

  If it is determined in step 201 that the vehicle control is not difficult (“No” in step 201), the receiving device 1 displays the screen display B shown in FIG. In the screen display B shown in FIG. 4, for example, “Receiving emergency warning (earthquake) information” is displayed, and it is displayed that an emergency warning broadcast is currently being received. The screen display B displays a switch area (command input means) 22 in which “switch to manual operation” is displayed.

  The switch area 22 is ready for input on the touch panel. On the screen display B, as reference information, for example, a steering wheel steering angle, an accelerator opening, and the like are displayed as meters. This makes it possible for the driver to visually and intuitively recognize how difficult the vehicle control is now.

  If the driver wishes to switch to manual operation, the driver presses the switch area 22 (“Yes” in step S203). When the switch area 22 is pressed, the vehicle support control is released (step S204). When the vehicle support control is canceled, the vehicle switches to manual operation, and the process proceeds to step S102. If the driver does not have enough time to check the display device 5 and the switch area 22 is not pressed (“No” in step S203), the display device 5 continues to display the screen display B. If “NO” in the step S203, that is, if the switch area 22 is not pressed, the display device 5 continues to display the screen display B.

  If it is determined in step S201 that it is difficult to control the vehicle (“Yes” in step 201), the receiving apparatus 1 displays the screen display C shown in FIG. The display content of the screen display C shown in FIG. 5 is substantially the same as the screen display B shown in FIG. 4, but the switch area where “switch to manual operation” is displayed is the toned switch area 22 b. The difference is that commands cannot be entered on the touch panel.

  When it is difficult to control the vehicle, it is determined that switching to manual operation is dangerous. Therefore, even if the driver desires to switch to manual operation, the switch region 22b is disabled. Is not possible.

  The receiving device 1 proceeds to step S201 with the screen display C displayed on the display device 5, and displays the screen display C on the display device 5 as long as vehicle control is difficult ("Yes" in step S201). Is continuously displayed (step S205). If the vehicle control has changed to a state where it is not difficult (“NO” in step S201), the process proceeds to step S202. The subsequent flow is as described above.

  As described above, when autonomous driving is performed in a state where vehicle control is difficult, if the driver suddenly switches to manual driving, the driver cannot cope with the complex control of the vehicle, and the vehicle control is mistaken and dangerous. It is assumed that it will fall into a state. Therefore, in the present embodiment, it is determined whether the vehicle is in manual operation, support operation, or in a state where vehicle control is difficult. If it is not difficult, the driver switches to manual driving according to the driver's intention, and then receives safety alert broadcasts after ensuring safety by stopping the vehicle at an appropriate location. As a result, it is possible to receive an emergency alert broadcast notification while ensuring the safety of the vehicle.

  In addition, when it is difficult to control the vehicle during the assisting operation, it is dangerous to switch to the manual operation in this state. Therefore, in this case, switching to manual operation is disabled so that it is possible to switch to manual operation after vehicle control is not difficult, and then emergency warning broadcasts are received after ensuring safety at the discretion of the driver. To be able to do. As a result, it is possible to receive an emergency alert broadcast while ensuring safety.

  Further, when it is during manual driving or when switching from support driving to manual driving and vehicle control is not difficult, notification of an emergency warning broadcast by image and sound is received. In this case, since there is room for the driver, it is possible to receive emergency alert broadcasts safely.

  In addition, if the vehicle is in manual operation or is switched from support operation to manual operation and vehicle control is difficult, whether to receive an emergency warning broadcast by image and sound at the discretion of the driver Alternatively, it is possible to select whether to receive emergency alert broadcasts only by voice. As a result, it is possible to select the type of emergency alert broadcast notification received by the driver's judgment, so that the emergency alert broadcast notification can be safely received.

  The present invention is not limited to the above-described embodiments, and can be applied to various embodiments without departing from the scope of the invention. For example, the configuration of the receiving device 1 and the display of the screen displays A, B, and C are examples, and can be implemented with appropriate changes without departing from the scope of the invention.

    In the drawings, 1 is an emergency information receiving device, 5 is a display device (display means), 8 is a speaker (audio output means), 18 is a broadcast receiver (broadcast receiving means), 20, 21, and 22 are switch areas (command input). Means).

Claims (8)

Broadcast receiving means (18) for receiving an emergency alert broadcast;
Display means (5) capable of displaying emergency information as an image;
Voice output means (8) capable of emitting voice,
When the broadcast receiving means receives an emergency alert broadcast,
Making a first determination to determine whether the vehicle is in manual operation or in support operation;
If the first determination is during manual operation, a second determination is made to determine whether the vehicle is in a situation where control is difficult;
In the second determination, the emergency information receiving device (1) for notifying the emergency warning broadcast by an image and sound when the vehicle is not in a situation where control is difficult.   In the second determination, when the vehicle is in a situation that is difficult to control, a first command input means (20) capable of selecting notification of the emergency warning broadcast by an image and sound on the display means, and The emergency information receiving device according to claim 1, wherein the second command input means (21) capable of selecting notification of the emergency warning broadcast by voice is displayed. When the first determination is that the vehicle is in a driving assist state, a third determination is made to determine whether the vehicle is in a situation that is difficult to control,
The said 3rd determination WHEREIN: When the vehicle is not in the condition where control is difficult, the command input means (22) which switches a vehicle to manual driving is made into the state which can be input in the said display means. Emergency information receiver.   The said 3rd determination WHEREIN: When the vehicle is in the situation where control is difficult, the command input means (22b) which switches a vehicle to manual driving is made into the state which cannot input in the said display means. Emergency information receiver.   The emergency information receiving apparatus according to any one of claims 1 to 4, wherein the display unit further includes a touch panel function.   The emergency information receiving apparatus according to claim 5, wherein the command input unit is in a state in which input is impossible when the display unit is toned down.   The emergency information receiving device according to any one of claims 1 to 6, wherein when the emergency alert broadcast is received, recording and recording of the content of the emergency alert broadcast is started. The emergency information receiving apparatus according to any one of claims 1 to 7, wherein a voice uttered from the voice output unit can be a voice familiar to the user.

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