JP4333479B2 - In-vehicle notification device - Google Patents

Description

  The present invention relates to an in-vehicle notification device that determines whether a crossing or an approach to an intersection is possible and notifies a driver of permission to pass.

  At a railroad crossing where a railroad and a road intersect, there may be a traffic jam up to the end of the road ahead of the railroad crossing. In this way, when the road is congested, if a subsequent vehicle enters the railroad crossing, the vehicle is confined within the railroad crossing, and there is a risk of an accident in which the train collides.

In order to prevent such accidents at the level crossing, measure the total length of the vehicle that is going to cross the level crossing and the total length of the space where the vehicle ahead of the level crossing does not exist, and check that the car cannot enter the space ahead of the level crossing. A system for informing the driver has been proposed (see, for example, Patent Document 1).
JP 2002-312891 A

  However, in the system described in Patent Document 1, in order to determine whether or not it is possible to enter the railroad crossing, a device for measuring the total length of the vehicle that is going to cross the railroad crossing and the length of the empty space at the end of the railroad crossing. It is necessary to install a device to measure the distance around the railroad crossing.

  The present invention has been made in view of the above problems, and determines whether or not a vehicle can enter a space ahead of a level crossing without installing a device for determining whether or not the level crossing can be entered in the vicinity of the level crossing. The purpose is to inform the person.

In order to achieve the above object, according to the first aspect of the present invention, storage means for storing the total length (Y) of the host vehicle, and transmission means for transmitting the length (Y) of the host vehicle stored in the storage means, The vehicle-mounted device provided in the preceding vehicle located ahead of the level crossing receives the length (Y) of the host vehicle from the transmission means, and a breaker installed at the destination vehicle and the level crossing The distance (X) between the vehicle and the distance between this vehicle and the breaker installed at the front of the railroad crossing is compared with the received length (Y) of the own vehicle. A receiving means for transmitting a signal indicating whether or not a space for the host vehicle can be secured, and receiving a signal indicating whether or not a space for the host vehicle can be secured ahead of the level crossing; and Was there enough space for the vehicle to enter the level crossing received by the receiving means? It is characterized and informing means for informing the permission of passage of railroad crossing on the basis of a signal indicating whether, further comprising a.

In such a configuration, when the length (Y) of the host vehicle stored in the storage means is transmitted, a space for the host vehicle to enter the destination of the level crossing from the in-vehicle device provided in the destination vehicle positioned ahead of the level crossing is secured. and a signal indicating whether or not becomes to be transmitted, this other party of crossing based on the signal indicating whether the vehicle enters a space can be secured permission passage of railroad crossing is informed Runode, Without installing a device for determining whether or not it is possible to enter the railroad crossing around the railroad crossing, it is possible to notify the driver whether or not the vehicle can enter the space ahead of the railroad crossing.

Further, as in the invention described in claim 2, it is determined whether or not the own vehicle has been stuck based on a signal indicating whether or not the vehicle has been stuck in response to a user operation, and the own vehicle is When it is determined that the vehicle is stuck, a signal indicating that the vehicle has stuck can be transmitted together with the length (Y) of the vehicle .

  In addition, the code | symbol in the bracket | parenthesis of each said means shows a corresponding relationship with embodiment mentioned later.

(First embodiment)
FIG. 1 shows the configuration of an in-vehicle notification device according to an embodiment of the present invention. The in-vehicle notification device includes a car navigation device (referred to as car navigation in the drawing) 10, a passage permission device 20, and a laser radar 30.

  The car navigation device 10 includes a high-precision GPS receiver 11, a map information storage unit 12, and an information processing unit 13. The navigation device 10 includes a display device that displays an image or the like according to an image signal input from the information processing unit 13, an audio output device that outputs sound according to the audio signal input from the information processing unit 13, and a user The operation switch group etc. (all not shown) which output the signal according to operation of these operation switches to the information processing part 13 are provided.

  The high-accuracy GPS receiver 11 outputs a signal for specifying the current position to the information processing unit 13 using the radio wave from the GPS satellite and the error information from the reference station fixed to the reference point. The information processing unit 13 can specify the current position with an error of several centimeters based on this signal.

  The map information storage unit 12 is configured by a device that reads map information stored in a recording medium such as a DVD-ROM or HDD (hard disk drive), and the map information stored in the DVD-ROM or HDD. Are output in response to a read request from the information processing unit 13. The map information in the present embodiment includes absolute position information of the circuit breaker installed at the level crossing.

  The information processing unit 13 is configured by, for example, a microcomputer including a ROM, a RAM, an I / O, a CPU, and the like, and controls the overall operation of the car navigation according to a program stored in advance in the ROM. The information processing unit 13 includes a communication unit, and performs bidirectional communication with the passage permission device 20 via the communication unit.

  The information processing unit 13 includes a CPU, a ROM, a RAM, an I / O, and the like, reads and executes a program recorded in the ROM, performs information writing / reading control on the RAM as necessary, and performs high processing. Data is exchanged with the precision GPS receiver 11, map information storage unit 12, display device, audio output device, operation switch group, and the like.

  The information processing unit 13 obtains the current position of the host vehicle based on a signal for specifying the current position input from the high-accuracy GPS receiver 11, and superimposes the current location mark on the map information read from the map information storage unit. Map display processing to be displayed on the display device, and route guidance processing for setting and guiding the route to the destination set using the Dijkstra method when the destination is set according to the operation of the user's operation switch group Processing as a navigation device is performed.

  The passage permission device 20 includes a circuit breaker information storage unit 21, a vehicle information storage unit 22, a space calculation unit 24, and an information processing unit 23.

  The circuit breaker information storage unit 21 stores the absolute position information of the circuit breaker within a predetermined range of the current position of the host vehicle. Specifically, when the information processing unit 13 of the car navigation device 10 reads out the absolute position information of the circuit breaker within the predetermined range of the current position of the host vehicle from the map information in the map information storage unit 12, the information is read out. The absolute position information of the circuit breaker within the predetermined range of the current position of the host vehicle is stored in the circuit breaker information storage unit 21 by the information processing unit 23.

  The vehicle information storage unit 22 is configured by a non-volatile memory such as a flash memory, stores various information of the host vehicle by writing control from the information processing unit 23, and responds to a read request from the information processing unit 23. Output various information. The vehicle information storage unit 22 stores in advance the length of the host vehicle and the distance from the front end of the vehicle to the position where the high-precision GPS receiver 11 is installed.

  The space calculation unit 24 calculates the space between the vehicle located at the front of the level crossing and the level crossing when the host vehicle is located within a predetermined range of the level crossing. Specifically, based on the absolute position information of the circuit breaker stored in the circuit breaker information storage unit 21 and the distance between the vehicle located ahead of the level crossing measured by a laser radar 30 described later and the host vehicle. The space between the vehicle located ahead of and the level crossing is calculated.

  The laser radar 30 is attached to the front end portion of the vehicle, emits a pulse laser beam toward the front of the vehicle 1, and measures the time from this emission until the reflected light of the pulse laser beam is received from the preceding vehicle, The distance between the vehicle 1 and the preceding vehicle is calculated based on the measured time, and the calculated result is output to the space calculation unit 24 of the passage permission device 20. In this embodiment, the measurable distance from the object by the laser radar 30 is about 20 m, and the measurement accuracy is about 10 cm.

  The information processing unit 23 includes a CPU, a ROM, a RAM, an I / O, and the like, reads out and executes a program recorded in the ROM, performs information writing / reading control on the RAM as necessary, Data is exchanged with the circuit breaker information storage unit 21, the vehicle information storage unit 22, the space calculation unit 24, the laser radar 30, the information processing unit 13 of the car navigation device 10, and the like.

  Next, an outline of the operation of the in-vehicle notification device will be described with reference to FIG. FIG. 2 shows a state in which the vehicle 2 is stopped ahead of the level crossing where the breakers 50a and 50b are installed, and the vehicle 1 equipped with the in-vehicle notification device is about to cross this level crossing. In addition, the process of the information processing part 23 of the communication permission apparatus 20 and the information processing part 13 of the car navigation apparatus 10 is demonstrated as a process of a vehicle-mounted alerting | reporting apparatus.

  The in-vehicle notification device of the vehicle 1 obtains the distance C between the vehicle 1 and the vehicle 2 by the laser radar 30 and determines the current position (latitude and longitude) of the vehicle 1 based on a signal input from the high-accuracy GPS receiver 11. Ask. Further, the absolute position information of the front breaker 50a and the previous breaker 50b is acquired from the map information storage unit 12 of the car navigation device 10. In addition, each absolute position information of the circuit breakers 50a and 50b is read as latitude and longitude information of the center of the road in a state where the circuit breakers 50a and 50b are descended. Then, based on the current position of the vehicle 1 and the absolute position information of each breaker 50a, 50b, the distance T1 between the vehicle 1 and the previous breaker 50a and the distance T2 between the vehicle 1 and the previous breaker 50b are obtained. Then, the in-vehicle notification device performs a space calculation process for calculating the distance X between the preceding breaker 50b and the vehicle 2, and whether or not the vehicle 1 can enter the distance X between the preceding breaker 50b and the vehicle 2. And informs the driver whether or not the vehicle can pass.

  In FIG. 2, the high-accuracy GPS receiver 11 is attached to the tip of the vehicle 1, but such a high-accuracy GPS receiver 11 is often attached to the center of the vehicle as shown in FIG. 3. . In this case, as shown in FIG. 3, when the distance from the front end of the vehicle 1 to the installation position of the high-accuracy GPS receiver 30 is α and T2−T1 = E, the distance between the vehicle 2 and the preceding breaker 50b X is obtained by Equation 1.

(Formula 1)
X = CE−T1 + α = C−T2 + α
Note that the thickness of the circuit breakers 50a and 50b is ignored for the sake of simplicity. The in-vehicle notification device performs the space calculation process for calculating the distance X between the preceding breaker 50b and the vehicle 2 in this way.

  Next, with reference to FIG. 4, the space calculation process by the vehicle-mounted notification device will be described. FIG. 4 is a flowchart of space calculation processing by the in-vehicle notification device. Hereinafter, processing of the information processing unit 13 of the car navigation device 10 and the information processing unit 23 of the passage permission device 20 will be described as processing of the in-vehicle notification device. The information processing unit 13 of the car navigation device 10 performs the space calculation processing shown in FIG. 4 together with the information processing unit 23 of the passage permission device 20 in parallel with the processing as a normal navigation device.

  First, the current position of the vehicle 1 is obtained based on a signal for specifying the current position input from the high-accuracy GPS receiver 11 (S100).

  Next, the map information is read from the map information storage unit 12, and a railroad crossing is located ahead of the vehicle 1 based on whether or not a breaker exists within a predetermined distance in the traveling direction of the vehicle 1 with reference to the current position of the vehicle 1. It is determined whether or not there is (S102).

  If it is determined that there is no level crossing in front of the vehicle 1 (NO in S102), the determination in S102 is repeated.

  In S100, when it is determined that there is a level crossing ahead of the vehicle 1 (YES in S102), the absolute position information of the crossing breaker is acquired from the navigation device 10. Specifically, as shown in FIG. 2, the position information of the crossing barriers 50a and 50b at the front of the vehicle 1 is acquired from the navigation device 10 (S104, S106). Then, each distance between the vehicle 1 and the circuit breaker 50a and the vehicle 1 and the circuit breaker 50b is calculated, and the absolute position information of the circuit breaker having the shorter distance from the vehicle 1 is used as the absolute position information of the front circuit breaker 50a. While memorize | storing to the information storage part 21, the circuit breaker with the longer distance from the vehicle 1 is memorize | stored in the circuit breaker information storage part 21 as absolute position information of the other circuit breaker 50b.

  Next, the distance C between the vehicle 1 and the preceding vehicle 2 is measured by the laser radar 30 (S108).

  Next, the distance α from the front end of the vehicle to the position where the high-accuracy GPS receiver 11 is installed is determined. Specifically, the distance α from the vehicle front end to the position where the high-accuracy GPS receiver 11 is installed is read from the vehicle information storage unit 22 (S110).

  Next, the absolute position information of the front circuit breaker 50a and the previous circuit breaker 50a is read from the circuit breaker information storage unit 21, and based on the current position of the vehicle 1 and the absolute position of the front circuit breaker 50a. A distance T1 between the current breaker 50a and the absolute position of the other breaker 50b is calculated based on the current position of the vehicle 1 and the previous breaker 50b (S112).

  Next, using Formula 1, a distance X between the preceding breaker 50b and the preceding vehicle 2 is calculated (S114).

  Next, the length Y of the host vehicle is read from the vehicle information storage unit 22, and the distance X between the preceding breaker 50 b and the preceding vehicle 2 is compared. Then, based on whether or not the distance X between the preceding breaker 50b and the preceding vehicle 2 is equal to or longer than the length Y of the host vehicle, it is determined whether or not the vehicle can proceed to the front of the level crossing (S116).

  Here, when the distance X between the preceding breaker 50b and the preceding vehicle 2 is equal to or longer than the length Y of the host vehicle, it is determined that the vehicle can proceed (YES in S116), and an audio signal is output to the audio output device. Then, the voice output device guides the passage permission such as “I can pass” (S118), and the process is terminated.

  Further, in S116, if the distance X between the preceding breaker 50b and the preceding vehicle 2 is less than the length Y of the host vehicle, it is determined that the vehicle cannot travel (determined as NO in S116), and the voice is output to the voice output device. A signal is output, and the voice output device gives guidance indicating that traffic is not permitted, such as “I cannot pass. Please wait as it is” (S120), and the process ends.

  As described above, the current position of the host vehicle and the map obtained by measuring the distance C between the host vehicle and the vehicle positioned ahead of the railroad crossing using the laser radar 30 and acquired based on the signal from the high-precision GPS receiver 11. Based on the position information of the circuit breaker 50b installed at the front of the level crossing acquired from the information storage unit 12, the distance X between the circuit breaker 50b installed at the front of the level crossing and the vehicle positioned ahead of the level crossing is calculated, If the calculated distance X between the breaker installed at the front of the level crossing and the vehicle located at the front of the level crossing is longer than the total length Y of the host vehicle stored in the vehicle information storage unit 22, permission to pass the level crossing is permitted. If the distance X between the breaker installed at the front of the railroad crossing and the vehicle located at the front of the railroad crossing is shorter than the total length Y of the host vehicle stored in the vehicle information storage unit 22, the crossing of the railroad crossing is prohibited. Since permission is notified, Without installing a device for determining whether possible to enter the switching can be vehicle crossings of the previous space to inform the driver whether it can enter.

(Second Embodiment)
Next, an in-vehicle notification device according to the second embodiment will be described focusing on differences from the first embodiment. Note that the same parts as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted, and only different parts will be described below. FIG. 5 shows a situation in which the vehicles 2 to 4 are stopped at the front of the level crossing and the vehicle 1 is stuck in the level crossing. When the vehicle 1 is stuck in the railroad crossing in this way, the in-vehicle notification device according to the present embodiment is provided for the information notification device 40 provided in the vehicles 2, 3, and 4 located in front of the vehicle 1. The notification process is performed so as to close the front.

  FIG. 6 shows the configuration of the in-vehicle notification device provided in the vehicle 1 and the information notification device provided in the vehicles 2, 3, 4. Compared with the configuration of the first embodiment shown in FIG. 1, the in-vehicle notification device for the vehicle 1 according to the present embodiment further transmits a data input from the information processing unit 23 to the information notification device 40. 25 and a switch (not shown) that outputs a signal indicating that the vehicle has stuck in the railroad crossing to the information processing unit 23 according to the user's operation is different.

  The information processing unit 23 can enter the vehicle between the vehicle 2 and the circuit breaker 50b when a signal indicating that the vehicle has stuck in the railroad crossing is input from the switch according to a user operation. It is determined whether or not there is a space, and when it is determined that there is no space, the information notification device 40 of the vehicles 2, 3, and 4 is notified via the wireless device 25 so as to be advanced.

  The information notification device 40 includes a wireless device 41 that receives a wireless signal transmitted from the wireless device 25 of the in-vehicle notification device and outputs the wireless signal to the information processing unit 43, and a display such as a liquid crystal. A vehicle state display device 42 and an information processing unit 43 that perform display according to the signal are provided.

  The information processing unit 43 of the information notification device 40 is configured as a normal computer including a CPU, a ROM, a RAM, and the like, and exchanges various signals with the wireless device 41 and the vehicle state display device 42.

  When notified from the in-vehicle notification device via the wireless device 41 that the information processing unit 43 is to be moved forward, the information processing unit 43 causes the display of the vehicle state display device 42 to display the front.

  Next, with reference to FIG. 7, the process of the in-vehicle notification device of the vehicle 1 will be described.

  First, based on whether or not a signal indicating that the vehicle has stuck in the railroad crossing is input from the switch according to the user's operation, it is determined whether or not the vehicle has stuck in the railroad crossing (S200).

  Here, when a signal indicating that the vehicle has stuck within the railroad crossing is not input from the switch, it is determined that the vehicle has not stuck within the railroad crossing (determined as NO in S200), and this processing is terminated.

  In S200, if a signal indicating that the vehicle has stuck in the crossing is input from the switch, it is determined that the vehicle has stuck in the crossing (YES in S200), and is input from the high-accuracy GPS receiver 11. The current position of the vehicle 1 is obtained based on the signal for specifying the current position (S102).

  Next, the same processing as S104, S106, S108, S110, S112, and S114 shown in FIG. 4 is performed, and the distance X between the preceding breaker 50b and the preceding vehicle 2 is calculated.

  Next, the length Y of the vehicle 1 is read from the vehicle information storage unit 22, and the distance X between the preceding breaker 50 b and the preceding vehicle 2 is compared. Specifically, considering the measurement error and the allowance when the vehicle 1 is put in the space between the vehicle 2 and the breaker 50b, the distance X between the breaker 50b and the preceding vehicle 2 is the length Y of the host vehicle. Is greater than 1.2 times (X> 1.2 × Y), it is determined whether there is a space in which the host vehicle can enter between the vehicle 2 and the breaker 50b. (S214).

  Here, when the distance X between the preceding breaker 50b and the preceding vehicle 2 is 1.2 times or less of the length Y of the own vehicle, the own vehicle can enter between the vehicle 2 and the breaker 50b. It is determined that there is no space (NO in S214), and a message such as “Stuck in front of the railroad crossing because it is stuck in the railroad crossing” is sent to the information notification device 40 of the other vehicle 2 via the wireless device 25. Is sent and notified so as to be advanced (S216). Thereafter, the process returns to S112, and the determination of S214 is repeated.

  If NO is determined again in S214, the transmission power of the wireless device 25 is increased, and the information notifying device 40 of the vehicles 2 and 3 is notified so as to be advanced (S216). Return to processing.

  When it is determined NO again in S214, the transmission power of the wireless device 25 is further increased, and the information notifying device 40 of the vehicle 2, 3, 4 is notified so as to be narrowed forward (S216). The process returns to S112. In this way, the transmission power of the radio device 25 is increased stepwise to a predetermined value.

  In S214, when the distance X between the preceding breaker 50b and the preceding vehicle 2 is longer than 1.2 times the length Y of the own vehicle, the own vehicle is located between the vehicle 2 and the preceding breaker 50b. It is determined that there is a space that can be entered (YES in S214), and the sound output device on the display screen of the car navigation device 10 of the vehicle 1 is guided to cross the railroad crossing, such as “Please move forward”. (S218).

  Next, when it is determined that the vehicle 1 has gone out of the railroad crossing based on the current position of the vehicle 1, the fact that the vehicle 1 has gone out of the railroad crossing is notified to the information notification device 40 of the vehicles 2, 3, 4 via the radio device 25. (S219) This process is terminated.

  As described above, when it is determined whether the vehicle 1 is stuck based on the signal indicating whether the vehicle is stuck or not, which is input according to the user's operation, The space (Y) and the distance (X) between the breaker installed at the front of the railroad crossing and the vehicle located at the front of the railroad crossing, are the spaces enough for the vehicle to enter? If it is determined whether or not the space where the host vehicle enters is not secured at the front of the railroad crossing, it is possible to notify the front vehicles 2, 3, and 4 so as to close the front. In addition, when it is determined that the space for entering the host vehicle is secured ahead of the railroad crossing, the destination vehicle can be notified that the space for entering the host vehicle is secured.

  Next, with reference to FIG. 8, the process of the information processing part 43 of the information notification apparatus 40 with which the vehicles 2-4 were equipped is demonstrated.

  First, it enters a standby state for a signal transmitted from the outside, and a message indicating that it has been stuck, such as “Stuck in the railroad crossing” or “Stuck in front” sent from the in-vehicle notification device of the vehicle 1. Receive (S300).

  Next, a message such as “Stuck in the railroad crossing” or “Please pack in front” is displayed on the display of the vehicle state display device 42 (S302).

  Next, it is determined whether or not the vehicle 1 has exited the level crossing based on whether or not it has been notified that the vehicle has exited the level crossing (S304).

  Here, when it is not notified that the vehicle has gone out of the railroad crossing, it is determined that the vehicle 1 is not out of the railroad crossing (NO in S304), and the processing returns to S302.

  Further, when it is notified in S302 that the vehicle has gone out of the level crossing, it is determined that the vehicle 1 has gone out of the level crossing (YES in S304), and this process is terminated.

  As described above, when the information notification device 40 is notified that the vehicle 1 is stuck from the in-vehicle notification device of the vehicle 1, the information on the vehicle state display device 42 is “stuck in the railroad crossing”, “stuffed in front”. Please display the message.

(Third embodiment)
Next, an in-vehicle notification device according to the third embodiment will be described. FIG. 9 shows a situation in which the vehicle 2 is stopped ahead of the level crossing and the vehicle 1 is about to cross the level crossing. The vehicle-mounted notification device according to the present embodiment is provided in each of the vehicles 1 and 2 shown in FIG. 9, and the vehicle 2 is mounted on the rearmost vehicle 2 that is located ahead of the railroad crossing the length Y of the vehicle 1 from the vehicle-mounted notification device of the vehicle 1. When transmitting to the notification device, the in-vehicle device of the vehicle 2 determines whether there is enough space for the vehicle 1 to enter between the breaker 50b and the vehicle 2, and transmits the determination result to the in-vehicle notification device. It has become. Then, the in-vehicle device of the vehicle 1 notifies the driver of the passage permission of the crossing based on the determination result notified from the in-vehicle device of the vehicle 2.

  FIG. 10 shows the configuration of the in-vehicle notification device. The in-vehicle notification device according to the present embodiment is different in the configuration of the passage permission device 20 from the configuration of the first embodiment shown in FIG.

  The passage permission device 20 of the present embodiment includes a circuit breaker information storage unit 21 in which absolute position information of a circuit breaker within a predetermined range of the current position of the host vehicle is stored, and wireless communication for wireless communication with other in-vehicle notification devices. Vehicle information that stores vehicle information including the machine 25, the length Y of the host vehicle read from the smart plate 31 attached to the vehicle, and the distance α from the tip of the vehicle 1 to the installation position of the high-precision GPS receiver 30 A storage unit 22a, a vehicle information storage unit 22b that stores absolute position information of other vehicles received via the wireless device 25, a space calculation unit 24 and an information processing unit 23 that calculate the space between the host vehicle and the circuit breaker 50b. It has.

  Next, with reference to FIG. 11, processing of the in-vehicle notification device in the vehicle 1 will be described. In addition, the process of the information processing part 13 of the car navigation apparatus 10 and the information processing part 23 of the traffic permission apparatus 20 is demonstrated as a process of a vehicle-mounted alerting | reporting apparatus.

  First, the current position (latitude and longitude) of the vehicle 1 is obtained based on a signal input from the high-accuracy GPS receiver 11. Further, the absolute position information of the front breaker 50a and the previous breaker 50b is acquired from the map information storage unit 12 of the car navigation device 10. Then, based on the current position of the vehicle 1 and the absolute position information of each of the circuit breakers 50a and 50b, it is determined whether or not there is a railroad crossing in front of the vehicle 1. Here, when it is determined that there is a railroad crossing ahead of the vehicle 1, the vehicle-mounted notification device of the vehicle 2 is notified via the wireless device 25 that the railroad crossing is approaching (S400).

  Next, the length Y of the vehicle 1 is read from the smart plate 31 and stored in the vehicle information storage unit 22a, and the length Y of the host vehicle is notified to the vehicle 2 via the wireless device 25 (S402).

  When the vehicle-mounted notification device of the vehicle 2 receives the length Y of the vehicle 1 transmitted from the vehicle-mounted notification device of the vehicle 1, it performs a space calculation process and the vehicle 1 only enters between the vehicle 2 and the circuit breaker 50 b. It is determined whether there is enough space for the vehicle 1 to enter the other side of the railroad crossing based on whether there is a space, and if it is determined that the space has been secured, the fact that the space has been secured is notified. It is like that. In addition, the process of the vehicle-mounted notification device for the vehicle 2 will be described later.

  Here, when it is determined by the in-vehicle notification device of the vehicle 2 that there is enough space for the vehicle 1 to enter between the vehicle 2 and the circuit breaker 50b, a notification is made that the space has been secured from the in-vehicle notification device of the vehicle 2. (S404).

  Then, when it is notified from the in-vehicle notification device of the vehicle 2 that the space has been secured, a crossing such as “Please move forward” is passed from the audio output device of the display screen of the car navigation device 10 of the vehicle 1. Guidance is made (S406), and this process is terminated.

  As described above, when it is determined that there is a railroad crossing ahead of the vehicle 1, the in-vehicle notification device reads the length Y of the vehicle 1 from the smart plate 31 and determines the length Y of the host vehicle via the wireless device 25. This can be notified to the in-vehicle notification device of the vehicle 2. Further, when it is notified from the in-vehicle notification device of the vehicle 2 that a space has been secured, a crossing such as “Please move forward” is passed from the audio output device on the display screen of the car navigation device 10 of the vehicle 1. You can be guided.

  Next, with reference to FIG. 12, the process of the in-vehicle notification device for the vehicle 2 will be described. In addition, the process of the information processing part 13 of the car navigation apparatus 10 and the information processing part 23 of the traffic permission apparatus 20 is demonstrated as a process of a vehicle-mounted alerting | reporting apparatus.

  First, it is notified via the wireless device 25 that the vehicle 1 is approaching a railroad crossing from the in-vehicle notification device (S500).

  Next, the length Y of the vehicle 1 is notified from the in-vehicle notification device of the vehicle 1 via the wireless device 25 (S502).

  Next, the map information is read from the map information storage unit 12 to obtain the absolute position information (latitude X2, longitude Y2) of the circuit breaker 50b. (S504).

  Next, the current position (latitude X1, longitude Y1) of the vehicle 2 is obtained based on the signal for specifying the current position input from the high-accuracy GPS receiver 11 of the vehicle 2 (S506).

  Next, the distance X between the vehicle 2 and the circuit breaker 50b is obtained based on the absolute position information of the circuit breaker 50b acquired in S504 and the current position of the vehicle 2 obtained in S506 (S508).

  Next, the distance X between the vehicle 2 and the circuit breaker 50b obtained in S508 is compared with the length Y of the vehicle 1 notified in S502. Specifically, based on whether or not the distance X between the preceding breaker 50b and the preceding vehicle 2 is greater than 1.2 times the length Y of the host vehicle (X> 1.2 × Y), the vehicle 2 It is determined whether or not there is a space where the host vehicle can enter between the vehicle and the breaker 50b (S510).

  Here, when the distance X between the preceding breaker 50b and the preceding vehicle 2 is greater than 1.2 times the length Y of the own vehicle, the own vehicle can enter between the vehicle 2 and the breaker 50b. It is determined that there is a space (YES in S510), and the in-vehicle notification device of the vehicle 1 is notified via the wireless device 25 that the space has been secured (S512), and this process is terminated.

  In S510, when the distance X between the preceding breaker 50b and the preceding vehicle 2 is 1.2 times or less of the length Y of the own vehicle, the own vehicle may enter between the vehicle 2 and the breaker 50b. It is determined that there is no available space (NO in S510), and the process returns to S506.

(Fourth embodiment)
Next, an in-vehicle notification device according to the fourth embodiment will be described. FIG. 13 shows a situation where the vehicles 2 to 4 are stopped ahead of the level crossing and the vehicle 1 is stuck in the level crossing. The vehicle-mounted notification device according to the present embodiment is provided in each of the vehicles 1 to 4 shown in FIG. 13, and a signal indicating that the vehicle 1 has stuck in the railroad crossing from the vehicle-mounted notification device of the vehicle 1 is located at the end of the railroad crossing. 2, the vehicle-mounted notification device of the vehicle 2 determines whether or not there is enough space for the vehicle 1 to enter between the breaker 50 b and the vehicle 2, and the determination result is transmitted to the vehicle-mounted notification device. To be sent to. And the vehicle-mounted alerting | reporting apparatus of the vehicle 1 alert | reports the passage permission of a railroad crossing to a driver based on the determination result notified from the vehicle-mounted alerting | reporting apparatus of the vehicle 2. FIG. Further, when it is determined that there is not enough space for the vehicle 1 to enter between the circuit breaker 50 b and the vehicle 2, the in-vehicle notification device for the vehicle 2 is placed in front of the in-vehicle notification device for the vehicles 3 and 4. Notify

  In addition to the configuration of the third embodiment illustrated in FIG. 10, the in-vehicle notification device according to the present embodiment further outputs a signal indicating that the vehicle has stuck in the railroad crossing to the information processing unit 23 according to the user's operation. A switch (not shown) is provided in the driver's seat.

  Next, with reference to FIG. 14, processing of the in-vehicle notification device in the vehicle 1 will be described. Hereinafter, processing of the information processing unit 13 of the car navigation device 10 and the information processing unit 23 of the passage permission device 20 will be described as processing of the in-vehicle notification device.

  First, based on whether or not a signal indicating that the vehicle has stuck within the railroad crossing is input from the switch, it is determined whether or not the vehicle has stuck within the railroad crossing (S600).

  Here, when a signal indicating that the vehicle has stuck within the railroad crossing is not input from the switch, it is determined that the vehicle has not stuck within the railroad crossing (determined as NO in S600), and this processing is terminated.

  In S600, if a signal indicating that the vehicle has stuck in the crossing is input from the switch, it is determined that the vehicle has stuck in the crossing (determined as YES in S600). The fact that the vehicle is stuck is notified to the in-vehicle notification device of the vehicle 2 (S602).

  Thereafter, processing similar to S402, S404, and S406 in FIG. 11 is performed, and this processing is terminated.

  Next, with reference to FIG. 15, processing of the in-vehicle notification device in the vehicle 2 will be described.

  First, it enters a standby state for a signal transmitted from the outside, and it is notified from the in-vehicle notification device of the vehicle 1 that the vehicle has been stuck in the railroad crossing via the wireless device 41 (S700).

  Thereafter, processing similar to S502, S504, S506, S508, and S510 in FIG. 12 is performed.

  In S510, when the distance X between the preceding breaker 50b and the preceding vehicle 2 is greater than 1.2 times the length Y of the own vehicle, the own vehicle enters between the vehicle 2 and the breaker 50b. It is determined that there is a space that can be used (YES in S510), and the in-vehicle notification device of the vehicle 1, 3, 4 is notified via the wireless device 25 that the space has been secured (S714). finish.

  In S510, when the distance X between the preceding breaker 50b and the preceding vehicle 2 is 1.2 times or less of the length Y of the own vehicle, the own vehicle may enter between the vehicle 2 and the breaker 50b. It is determined that there is no space available (determined as NO in S510), notifies the in-vehicle notification devices of the vehicles 3 and 4 so as to close the front (S712), and returns to the processing of S506.

  Next, with reference to FIG. 16, the process of the in-vehicle notification device in the vehicles 3 and 4 will be described.

  First of all, it is in a standby state for a signal transmitted from the outside, and the fact that the vehicle 1 is stuck in the railroad crossing from the in-vehicle notification device of the vehicle 1 through the radio device 41, “please pack it in front”. The message shown is received (S800).

  Next, a message such as “Stuck in the railroad crossing” or “Please pack in front” is displayed on the display of the vehicle state display device 42 (S802).

  Next, it is determined whether or not the space has been secured based on whether or not the in-vehicle notification device of the vehicle 2 has notified that the space has been secured (S804).

  Here, when it is notified from the in-vehicle notification device of the vehicle 2 that the space has been secured, it is determined that the space has been secured, and this processing is terminated.

  Moreover, in S802, when it is not notified from the vehicle-mounted alerting | reporting apparatus of the vehicle 2 that the space was ensured, it determines with space not being securable, and returns to the process of S802.

  In the above embodiment, the storage means corresponds to the vehicle information storage units 22 and 22a, the current position acquisition means corresponds to the process of S100 of FIG. 4, and the breaker information acquisition means corresponds to the processes of S104 and S106 of FIG. The distance measuring means corresponds to the processing of S108 in FIG. 4, the distance calculating means corresponds to the processing of S112 and S114 in FIG. 4, and the notification means is S116, S118, S120 in FIG. 4 and S406 in FIG. It corresponds to the process. Further, the transmission means corresponds to the processing of S400 and S402 in FIG. 11, and the reception means corresponds to the processing of S406 in FIGS. The first determination means corresponds to the processing of S200 in FIGS. 7 and 14, and the second determination means corresponds to the processing of S214 in FIG. 7, S11 in FIG.

(Other embodiments)
In the above embodiment, the information notification device 40 has shown an example of displaying a message such as “Stuck in the railroad crossing” or “Stuck in front” on the display of the vehicle state display device 42. The vehicle ahead may be notified by voice guidance by a speaker, generation of horn sound by horn, passing control by a front light, or the like.

  Further, in the above-described embodiment, when the host vehicle is stuck, an example is shown in which the front vehicle is notified to be stuffed forward, but the rear vehicle may be notified to be stuffed back.

  In the above embodiment, the case where the vehicle is about to cross the railroad crossing or the case where the vehicle is stuck within the railroad crossing is shown as an example. However, for example, the case where the vehicle is about to pass through the intersection or the vehicle is stuck within the intersection. It can also be applied when

  Moreover, you may comprise so that the signal which shows whether the circuit breaker is going down according to a user's operation may be input into a vehicle-mounted alerting | reporting apparatus. The in-vehicle notification device determines whether or not the breaker is descending based on a signal indicating whether or not the breaker is descending, and if it is determined that the breaker is not descending, If it is notified that the circuit breaker has been closed, it may be notified that the train has been stuck. For example, as shown in FIG. 17, the in-vehicle notification device determines whether or not the breaker is descending based on a signal indicating whether or not the breaker is descending (S900), and the breaker is descending. 7 and FIG. 14, a process for notifying the vehicle ahead is performed as shown in FIGS. 7 and 14 (S902). On the other hand, a process of notifying that the vehicle is stuck in the railroad crossing (904) may be performed.

It is a figure which shows the structure of the vehicle-mounted alerting device which concerns on 1st Embodiment of this invention. It is a figure for demonstrating the outline of the action | operation of the vehicle-mounted alerting device which concerns on 1st Embodiment. It is explanatory drawing when a high precision GPS receiver is attached to the center part of a vehicle. It is a figure which shows the space calculation process by the vehicle-mounted alerting device which concerns on 1st Embodiment. It is a figure for demonstrating the outline of the action | operation of the vehicle-mounted alerting | reporting apparatus which concerns on 2nd Embodiment. It is a figure which shows the structure of the vehicle-mounted alerting | reporting apparatus and information notification apparatus which concern on 2nd Embodiment. It is a figure which shows the process of the vehicle-mounted alerting device which concerns on 2nd Embodiment. It is a figure which shows the process of the information notification apparatus which concerns on 2nd Embodiment. It is a figure for demonstrating the outline of the action | operation of the vehicle-mounted alerting | reporting apparatus which concerns on 3rd Embodiment. It is a figure which shows the structure of the vehicle-mounted alerting device which concerns on 3rd Embodiment. It is a figure which shows the process of the vehicle-mounted alerting | reporting apparatus of the vehicle 1 which concerns on 3rd Embodiment. It is a figure which shows the process of the vehicle-mounted alerting | reporting apparatus of the vehicle 2 which concerns on 3rd Embodiment. It is a figure for demonstrating the outline of an action | operation of the vehicle-mounted alerting | reporting apparatus which concerns on 4th Embodiment. It is a figure which shows the process of the vehicle-mounted alerting | reporting apparatus in the vehicle 1 which concerns on 4th Embodiment. It is a figure which shows the process of the vehicle-mounted alerting | reporting apparatus in the vehicle 2 which concerns on 4th Embodiment. It is a figure which shows the process of the vehicle-mounted alerting | reporting apparatus in the vehicles 3 and 4 which concern on 4th Embodiment. It is a figure which shows the process of the vehicle-mounted alerting device which concerns on other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Car navigation apparatus, 11 ... High precision GPS receiver, 12 ... Map information storage part,
13 ... Information processing unit, 20 ... Traffic permission device, 21 ... Circuit breaker information storage unit,
22, 22a, 22b ... vehicle information storage unit, 23 ... information processing unit,
24 ... Space calculator, 25 ... Radio, 30 ... Laser radar,
31 ... Smart plate, 40 ... Information notification device, 41 ... Wireless device,
42 ... Vehicle state display device, 43 ... Information processing unit.

Claims (2)

Storage means for storing the total length (Y) of the host vehicle;
Transmission means for transmitting the length (Y) of the host vehicle stored in the storage means ,
An in-vehicle device provided in a destination vehicle located ahead of a level crossing receives the length (Y) of the host vehicle from the transmission means, and includes the vehicle ahead and the breaker installed at the side of the level crossing. A distance (X) between the vehicle and the distance (X) between the preceding vehicle and the breaker installed at the front of the railroad crossing is compared with the received length (Y) of the own vehicle, and the road ahead A signal indicating whether or not a space for the vehicle to enter has been secured,
Furthermore, a receiving means for the vehicle enters a space other party of the crossing receives a signal indicating whether or not secured,
Informing means for informing permission of passage of the railroad crossing based on a signal indicating whether or not a space where the host vehicle can enter is secured ahead of the railroad crossing received by the receiving means. In-vehicle notification device. A first determination unit configured to determine whether or not the host vehicle is stuck based on a signal indicating whether or not the vehicle is stuck according to a user operation;
The transmission means transmits a signal indicating that the own vehicle has stuck together with the length (Y) of the own vehicle when the first judging means determines that the own vehicle has stuck. The in-vehicle notification device according to claim 1 .

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