JP2003016596A - Collision prevention system and display information generation device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a collision prevention system capable of avoiding a collision accident at an intersection due to a vehicle entering an intersection having poor visibility. SOLUTION: A display device Da, Db,
The display devices Dc and Dd are installed on the non-priority road R2, and the microphones Ma1 to Ma3, the microphones Mb1 to Mb3, and the microphones Mc1 to Mc
3. Based on a sound signal relating to the sound emitted by the vehicle, which is collected and output by the microphones Md1 to Md3, the position and the running condition of the vehicle are determined, and at the intersection Cr corresponding to the determined position and the running condition of the vehicle Is output, and the information is displayed on the display devices Da to Dd.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects a vehicle especially near an intersection and provides the passengers of the vehicle with information about the detected vehicle to prevent a vehicle accident at the intersection and to prevent traffic accidents. The present invention relates to a collision prevention system for convenience, and a display information generation device used in the system.

[0002]

2. Description of the Related Art Conventionally, in order to prevent a vehicle accident at an intersection such as a T-junction or a crossroad with poor visibility, a vehicle detector is installed on one road side forming the intersection and the other road side. There is a proposal regarding a collision prevention system for a vehicle encountering a vehicle having a warning display plate installed therein (see Japanese Patent Laid-Open No. 28400/1993). The system detects a vehicle approaching an intersection on one of the roads by a vehicle detector and displays a stop on a warning display plate installed on the other road.

However, according to this system, the warning is displayed on the warning display plate regardless of the running condition of the vehicle approaching the intersection on the other road, so that the vehicle is detected on one of the roads. In this case, the vehicle running on the other road cannot be appropriately warned or instructed when entering the intersection.

In order to solve the above-mentioned problems, proposals for other collision prevention systems have been made (JP-A-11-
862200). The system has the same configuration as the system described above, and changes the display on the warning display plate according to the traveling condition of the vehicle approaching the intersection on the other road.

[0005]

However, in the case of this system, although a warning and an instruction are displayed on a warning display plate for a vehicle traveling on the other road, a vehicle traveling on one of the roads is notified to an intersection. No information is provided on entry. Therefore, if the vehicle traveling on one of the roads is inadequately detected due to a malfunction of the vehicle detector, etc., and the warning display plate installed on the other road does not display, both roads approach the intersection. Despite the presence of vehicles, there is a risk that accidents such as collisions may occur due to the vehicles entering the intersection without pausing.

The present invention has been made in view of the above-mentioned circumstances, and the vehicle detection means and the display means (first road) are provided on both the one road (first road) and the other road (second road). Display means, second display means), and vehicles (first vehicle, first vehicle) existing on the first road and the second road to be displayed on the respective display means based on the detection results by the respective vehicle detection means. By generating information on traffic regulation according to the driving situation of two vehicles), appropriate warnings and instructions can be given according to the traveling situation of vehicles entering the intersection, and vehicles traveling on each road. It is an object of the present invention to provide a collision prevention system and a display information generation device capable of providing information to both parties and avoiding the occurrence of an accident such as a collision at the time of entering an intersection.

Further, based on the detection result, an accident of a vehicle that occurs near an intersection or the like is detected, and information about the accident is generated, so that a vehicle occupant who is likely to travel near the accident site. To provide a collision prevention system and a display information generation device that can prevent the occurrence of a secondary disaster by providing information such as the fact that an accident has occurred and traffic regulations due to the accident, and calling attention. To aim.

Further, the vehicle detecting means detects the vehicle based on the sound signals such as the traveling sound and the engine sound emitted by the vehicle, and thus, compared with the sensor type vehicle detecting device using a CCD camera, infrared rays or the like. It is an object of the present invention to provide a collision prevention system and a display information generation device that use a sound collection microphone or the like that is cheaper and saves power.

Further, since the first display means and the second display means are variable displays capable of performing display corresponding to the generated information, it is possible to display appropriate contents according to the situation. It is an object of the present invention to provide a collision prevention system that can be performed.

Further, based on the signal output by the vehicle detection means, a display output or a voice output is performed by an information providing device mounted on the vehicle, for example, a monitor used for a car navigation system mounted on the vehicle, a car stereo, or the like. In order to provide the information, the information is generated and transmitted to enter the intersection through the first display means and the second display means installed on the road and the information providing device mounted on the vehicle. A collision prevention system and a display information generation device that can provide passengers with information about traffic such as warnings and instructions when doing, and can also provide information about an accident when a collision occurs at an intersection. The purpose is to provide.

[0011]

A collision prevention system according to a first aspect of the present invention is a collision prevention system for preventing a collision of a vehicle at an intersection formed by a first road and a second road, the collision prevention system being provided on the first road. Vehicle detecting means for detecting the first vehicle and the second vehicle existing on the second road,
First display means and second display means for displaying information on traffic regulation, information displayed on the first display means based on the detection result detected by the vehicle detection means, and the second display means. And a generating unit that generates the information to be displayed according to the traveling states of the first vehicle and the second vehicle, respectively.

The collision prevention system according to the second invention is the first invention.
In the collision prevention system according to the present invention, based on the detection result, an accident detection means for detecting an accident of the vehicle, and a generation for generating information on the detected accident to be displayed on the first display means and the second display means. Means are further provided.

The collision prevention system according to the third invention is the first invention.
Alternatively, in the collision prevention system according to the second aspect of the invention, the vehicle detection means may detect the first vehicle and the second vehicle based on a sound signal.
It is characterized by detecting a vehicle.

The collision prevention system according to the fourth aspect of the present invention is the first aspect.
In the collision prevention system according to any one of the third to third inventions, the first display means and the second display means are variable displays capable of performing a display corresponding to the information generated by the generation means. It is characterized by

The collision prevention system according to the fifth aspect of the present invention is the first aspect.
The collision prevention system according to any one of the fourth to fourth inventions, which is mounted on a vehicle and includes a receiving unit that receives information and an output unit that outputs the received information, and provides the passengers of the vehicle with the information. It is characterized by comprising an information providing device, and a generating means for generating information to be provided to the passenger based on the detection result, and a transmitting means for transmitting the generated information.

A display information generating apparatus according to a sixth aspect of the invention is the first aspect.
A first display device visible from a first vehicle present on the road;
And a display information generating device for generating information on traffic regulation to be displayed on a second display device visible from a second vehicle existing on a second road, wherein the first vehicle and the second vehicle
Receiving means for receiving a signal relating to the vehicle, vehicle detecting means for detecting the first vehicle and the second vehicle based on the received signal, information displayed on the first display device, and information displayed on the second display device. It is characterized by further comprising: a generation unit that generates information according to the traveling states of the first vehicle and the second vehicle.

A display information generating device according to a seventh aspect of the invention is the sixth aspect.
In the display information generating apparatus according to the invention, based on the detection result, an accident detecting means for detecting an accident of the vehicle, and information about the detected accident to be displayed on the first display device and the second display device. And a generating unit.

A display information generating device according to an eighth aspect of the present invention is the sixth aspect.
Alternatively, in the display information generating device according to the seventh aspect of the invention, the vehicle detection means is configured to detect the first vehicle and the second vehicle based on a sound signal.
It is characterized by detecting a vehicle.

A display information generating device according to a ninth aspect of the invention is the sixth aspect.
In the display information generating apparatus according to any one of the eighth to eighth inventions, based on the detection result, the information providing apparatus for providing information to the passengers of the vehicle mounted on the vehicle generates information to be output. It is characterized by further comprising generation means and transmission means for transmitting the generated information to the information providing device.

In the case of the first and sixth inventions, the first
A vehicle detection means is provided on each of the road and the second road;
A first display unit and a second display unit for displaying information regarding traffic regulation are provided, and the information displayed on the first and second display units is based on the detection result of the vehicle detection unit. By generating each of the two vehicles according to their traveling conditions, appropriate warnings and instructions can be given according to the traveling conditions of vehicles entering the intersection, and information can be provided to both vehicles traveling on each road. It is possible to provide a collision prevention system and a display information generation device that can be provided and can avoid the occurrence of an accident such as a collision at the intersection when entering an intersection.

According to the second and seventh aspects of the invention, an accident of the vehicle is detected based on the detection result, and the information on the accident is generated to detect the possibility of traveling near the accident site. To passengers, etc., that the accident occurred,
Also, it is possible to realize a collision prevention system and a display information generation device that can provide information regarding traffic regulations and the like associated with an accident, call attention, and prevent a secondary disaster from occurring.

According to the third and eighth inventions, the first aspect
The second vehicle detecting means detects the vehicle based on the sound signal, so that a sound collecting microphone or the like, which is cheaper and consumes less power than a sensor type vehicle detecting device using a CCD camera, infrared rays, or the like, is provided. It is possible to realize the collision prevention system and the display information generating device used.

According to the fourth aspect of the invention, the first and second display means are variable display devices capable of displaying information corresponding to the information generated by the generating means, so that the contents suitable for the situation can be obtained. A collision prevention system capable of displaying can be realized.

According to the fifth and ninth aspects of the invention, based on the detection result by the vehicle detection means, information is generated and transmitted to the passengers of the vehicle through the information providing device mounted on the vehicle. By this, the first installed on the road
Alternatively, in addition to the second display means, it is possible to provide passengers with information regarding traffic such as warnings and instructions when entering an intersection through an on-vehicle information providing device, and the information is installed in a vehicle used in a car navigation system, for example. A collision prevention system and display information generation that can output information to a monitor and output as audio in a car stereo, etc., and can also provide information about an accident when a collision accident occurs at an intersection. The device can be realized.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the drawings showing the embodiments thereof. FIG. 1 is an external view showing a form in which the collision prevention system according to the present invention is applied to an intersection. In the figure, R1 is a priority road, and the priority road R
1 and the non-priority road R2 that intersects this intersection C
r is constructed, and the priority road R1 is provided near the intersection Cr.
Also, a building ST is built facing the non-priority road R2 and obstructing the field of view of vehicles entering the intersection Cr.

The vehicle traveling on the priority road R1 is the building S
When moving in the direction of the intersection Cr (hereinafter, referred to as “first direction”) with T in the right field of view, sound is sequentially sensed toward the intersection Cr along the lane along which the vehicle travels. The microphones Ma1 to Ma3 for outputting sound signals are installed, and the vehicle traveling on the priority road R1 moves toward the intersection Cr (hereinafter, referred to as "second direction") with the building ST in the left field of view. In this case, along the lane along which the vehicle travels,
Microphones Mb1 to Mb3 are sequentially installed toward the intersection Cr.

A vehicle traveling on the non-priority road R2 is
With the building ST in the right field of view, the direction of the intersection Cr (hereinafter,
When moving in the “third direction”), microphones Mc1 to Mc3 are sequentially installed toward the intersection Cr along the lane along which the vehicle travels, and a vehicle traveling on the non-priority road R2 is constructed. When the object ST is in the left field of view and moves in the direction of the intersection Cr (hereinafter, referred to as “fourth direction”), the microphones Md1 to Md3 is installed.

In the vicinity of the intersection Cr, a display device D visible from a vehicle traveling on the priority road R1 in the first direction.
a, a display device Db visible from a vehicle traveling in the second direction on the priority road R1, a display device Dc visible from a vehicle traveling in the third direction on the non-priority road R2, and a non-priority road R2. A display device Dd that is visible from a vehicle traveling in four directions is installed. The display device Da to
Dd is composed of a liquid crystal display or the like and can change the display contents almost arbitrarily.
Various displays such as "temporary stop" and "stop" are possible.

Further, along the priority road R1, a display information generating device 1 according to the present invention and an accident detecting device 4 for detecting a collision accident of a vehicle are installed, and a traveling vehicle is mounted. A transmitter 2 such as a beacon that can wirelessly transmit information displayed on a monitor of a car navigation system is installed.

FIG. 2 is a block diagram showing the structure of the collision prevention system according to the present invention. Reference numeral 1 in the figure is a display information generating apparatus according to the present invention, and includes microphones Ma1 to Ma3 and a microphone Mb1.
To Mb3, microphones Mc1 to Mc3, and microphones Md1 to Md3, the output sound signals are input to the display information generating device 1.

The microphones Ma1 to Ma3, the microphones Mb1 to Mb3, the microphones Mc1 to Mc3, and the microphones Md1 to Md3 are also connected to the accident detection device 4, and the output sound signal is input to the accident detection device 4.

The accident detection device 4 includes microphones Ma1 to Ma3, microphones Mb1 to Mb3, microphones Mc1 to Mc3, and microphones Md1 to Md3.
The sound source type is identified based on the sound pressure indicated by the sound signal input from the vehicle, and a vehicle collision accident or the like is detected. That is, the sound pressure is measured using a sound signal, the power spectrum distribution of sound is calculated based on the measurement result, the calculated power spectrum distribution is divided into a plurality of subbands, and the power spectrum divided into a plurality of subbands. The sound source type is determined based on each distribution, and a collision accident or the like is detected based on the determination result. The details are disclosed in Japanese Patent Application Laid-Open No. 2000-275096 filed by the present applicant, and therefore omitted.

When the accident detection device 4 detects the occurrence of an accident by the method described above, an accident occurrence signal indicating that fact is output to the display information generation device 1.

Further, the display information generating device 1 includes a display device Da.
To Dd, and generates information to be displayed on the display devices Da to Dd based on the input sound signal and accident occurrence signal. Further, the display information generation device 1 is a transmission device 2 that can transmit information wirelessly such as a beacon.
It is connected to the.

The transmitting device 2 sends the information generated by the display information generating device 1 to the information providing device 3 mounted on the vehicle in order to provide information to passengers such as a monitor and a car stereo in the car navigation system. Send. The passenger can receive various information regarding the intersection Cr via the information providing device 3.

FIG. 3 is a block diagram showing the configuration of the display information generating apparatus 1. Microphones Ma1 to Ma3, Microphones Mb1 to Mb
3, the sound signals input from the microphones Mc1 to Mc3 and the microphones Md1 to Md3 are input to the vehicle information generation units 11a to 11d included in the microphone signal input unit 11 included in the display information generation device 1. The vehicle information generation unit 11a uses the microphones Ma1 to Ma3.
Vehicle information relating to the position and state (running, stopping, etc.) of the vehicle based on the sound signal output by the vehicle information generator. Similarly, the vehicle information generators 11b to 11d similarly generate microphones Mb1 to Mb3, microphones Mc1 to Mc3, and microphone Md1 to, respectively. Vehicle information is generated based on the sound signal output by Md3.

The vehicle information generated and output by the vehicle information generators 11a to 11d is input to the data processor 12. The data processing unit 12, based on the input vehicle information,
An instruction signal for instructing display contents (“slow”, “pause”, “stop”, etc.) to be displayed on the display devices Da to Dd is generated.

The instruction signal generated by the data processing unit 12 is input to the display signal generation units 13a to 13d which constitute the display signal output unit 13 which outputs the display signal indicating the display content. The display signal generators 13a to 13d generate display signals for displaying the display contents on the display devices Da to Dd, respectively, based on the input instruction signal. The display signals generated by the display signal generators 13a to 13d are input to the abnormal signal detector 130 included in the display signal output unit 13.

The abnormal signal detector 130 detects whether or not there is an abnormality in the display signal. For example, when displaying on the display devices Da to Dd based on the display signal, "stop" on both the display device Da on the priority road R1 side and the display device Dc on the non-priority road R2 side, or "on both". It is detected whether a signal that causes an abnormal display combination, such as "Slow", is input. As a result, if there is an abnormality, a fail-safe display is immediately issued (for example, the display device D on the priority road R1 side).
“Slow” at “a” and “pause” on the display device Dc on the non-priority road R2 side). When there is no abnormality, display signals are output to the display devices Da to Dd and the transmitter 2.

Further, the accident detection signal output from the accident detecting device 4 is input to the data processing unit 12. When the accident detection signal is input, the data processing unit 12 generates an instruction signal for instructing the display contents to be displayed on the display devices Da to Dd (“an accident has occurred in an intersection!”).

Further, the instruction signal is sent to the display signal generator 13a ...
13d is input to generate a display signal indicating the display content, and the abnormality signal detection unit 130 determines whether there is an abnormality,
When there is no abnormality, it is output to the display devices Da to Dd and the transmission device 2.

FIG. 4 is a block diagram showing the configuration of the vehicle information generation unit 11a. The sound signals output from the microphones Ma1 to Ma3 are analog signals, which are input to the A / D converters 111 to 113 included in the vehicle information generation unit 11a and output as digital signals. The sound signal output as a digital signal is input to the vehicle identification unit 114 and the state determination unit 115, respectively.

The vehicle identifying unit 114 determines whether or not the sound source is a vehicle based on the frequency characteristic indicated by the sound signal, and identifies each of a plurality of vehicles when there are a plurality of vehicles. When the vehicle can be discriminated, the state discrimination unit 11 outputs a vehicle discrimination signal indicating that fact.
Output to 5. The state determination unit 115 determines the position and state (running or stopped) of the vehicle indicated by the vehicle determination signal based on the sound signal that is a digital signal, and outputs vehicle information related to the position and state of the vehicle.

FIG. 5 is a graph showing an example of the relationship between the volume level of each sound signal detected by the microphones Ma1 to Ma3 and time. In the case of the graph, the volume level indicated by the sound signal output from the microphone Ma1 has the maximum value at the time t1, and thereafter, the volume level is lowered without maintaining the maximum value. Therefore, it is determined that there is a vehicle running on the priority road R1 and the vehicle has passed the microphone Ma1 at time t1.

Similarly, the volume level indicated by the sound signal output from the microphone Ma2 has the maximum value at the time t2 and then decreases without maintaining the maximum value. Therefore,
There is a vehicle running on the priority road R1, and the microphone M
It is determined that the vehicle passed before a2 at time t2. Further, if the vehicle passing the front of the microphone Ma1 at the time t1 and the vehicle passing the front of the microphone Ma2 at the time t2 are the same vehicle by the vehicle identifying unit 114, the vehicle is the priority road R.
It can be determined that 1 is moving in the direction of the intersection Cr.

Next, the volume level indicated by the sound signal output from the microphone Ma3 has the maximum value at the time t3, and then maintains the maximum value until the time t4, and thereafter, the volume level decreases. There is. Therefore, when it is determined that the vehicle is the same as the vehicle passing the front of the microphone Ma1 at the time t1 and passing the front of the microphone Ma2 at the time t2, the vehicle passes the front of the microphone Ma2 and then the front of the microphone Ma3. Therefore, it can be determined that the vehicle is in the stopped state from time t3 to time t4 and is again in the traveling state after time t4.

Therefore, as described above, the state determination unit 115
Can determine the state of the vehicle such as whether the vehicle is running or stopped based on the sound signal.
Further, by comparing the sound volume levels of the sound signals output from the microphones Ma1 to Ma3, the relative position of the vehicle from the microphones Ma1 to Ma3 can be generally determined.

Similarly, based on the sound signals output from the microphones Mb1 to Mb3, the microphones Mc1 to Mc3, and the microphones Md1 to Md3, the state determination unit 115 determines the position of the vehicle on the priority road R1 and the non-priority road R2. And the state can be determined.

FIG. 6 is a schematic view showing an example of the forms of the display devices Da to Dd. The display devices Da to Dd are configured by arranging LEDs in a matrix on a substrate having a horizontally long rectangular shape, and display contents can be changed almost arbitrarily. In the present embodiment, an example of displaying “stop”, “pause”, and “slow” is shown.
If a vehicle collision occurs at the intersection Cr,
It is also possible to display information such as "an accident occurred at an intersection!"

Further, the display devices Da to Dd are not limited to the horizontally long rectangular shape shown in FIG. 6, and the information to be displayed is not limited to the character information and may be displayed using images, symbols and the like.
FIG. 7 is a schematic view showing an example of another form of the display devices Da to Dd. FIG. 7A shows an inverted triangular shape.
7 (b) shows a vertically long rectangular shape, FIG. 7 (c) shows a shape such as a square, and FIG. 7 (d) shows what is displayed as symbols instead of character information. ing.

Next, the operation of the display information generating apparatus 1 in the collision prevention system having the above-mentioned structure will be described with reference to the flow charts shown in FIGS. 8 and 9. In FIG. 8, the display information generation device 1 is a vehicle V1 traveling on the priority road R1.
9 is a flowchart for explaining an example of an operation when controlling the display device Da that can be visually recognized from the above.

When there is no vehicle on the priority road R1, the display device Da displays "slow" based on the display information output by the display information generating device 1 (S1). Further, based on the sound signals output from the microphones Ma1 to Ma3 and the microphones Mb1 to Mb3, it is determined whether or not there is a vehicle on the priority road R1 (S2), and if there is no vehicle, the display of "slow" is maintained. (S1). When the vehicle V1 exists on the priority road R1, it is determined whether or not the vehicle exists on the non-priority road R2 based on the sound signals output from the microphones Mc1 to Mc3 and the microphones Md1 to Md3 (S3).

When there is no vehicle on the non-priority road R2, the display of "Slow" is maintained (S1).
Display information is output to display "pause" (S
4). Next, it is determined whether or not the vehicle on the non-priority road R2 is stopped (S5), and if it is not stopped, "temporary stop" is performed.
Is maintained (S4), and when stopped, display information is output to display "slow" (S6).

In FIG. 9, the display information generating device 1 is a display device Dc which is visible from the vehicle V2 traveling on the non-priority road R2.
5 is a flowchart for explaining an example of an operation when controlling the. When there is no vehicle on the non-priority road R2, based on the display information output by the display information generating device 1,
The display information Dc indicates "pause" (S1).
0).

Further, the microphones Mc1 to Mc3 and the microphones Md1 to
Based on the sound signal output from Md3, it is determined whether or not there is a vehicle on the non-priority road R2 (S11), and if it is not present, the display of "pause" is maintained (S10). If the vehicle V2 exists on the non-priority road R2, the microphone Ma1
-Ma3 and microphones Mb1-Mb3 are output, it is determined whether or not a vehicle is present on the priority road R1 (S12).

When there is no vehicle on the priority road R1, the display of "temporary stop" is maintained (S13), and it is determined whether or not the vehicle V1 is temporarily stopped (S14). The display of "pause" is maintained (S1
3). If there is a vehicle on the priority road R1,
Display information is output to display "stop" (S1
5) Then, it is determined whether or not the vehicle existing on the priority road R1 has passed the intersection Cr (S16), and if not passed, the display of "stop" is maintained (S15).

Next, when the vehicle V2 existing on the non-priority road R2 has completed the temporary stop in step 14, or the vehicle existing on the priority road R1 is identified in step 16 at the intersection C.
When r has been passed, display information is output to display "slow" (S17). Further, it is determined whether or not the vehicle V2 has passed the intersection Cr (S18), and if it has not passed, the display of "slow" is maintained. Vehicle V2 is at intersection C
When r has been passed, display information is output to display "pause" (S19).

The information displayed on the display device Da described above is output to the transmitting device 2 such as a beacon so that the vehicle V3 traveling near the installation position of the transmitting device 2 uses the car navigation system in the car navigation system. When a device or the like (information providing device) is installed, information can be provided on the monitor of the device.

The microphones Ma1 to Ma3 and the microphones Mb1 to Mb
When an accident of the vehicle is detected by the accident detection device 4 based on the sound signals output from b3, the microphones Mc1 to Mc3, and the microphones Md1 to Md3, priority is given to the processing shown in FIGS. The display information generating device 1 outputs accident information about an accident ("an accident has occurred in an intersection!"). In this case, the accident information is displayed on the display devices Da to Dd, and the accident information is transmitted from the transmission device 2.

In the present embodiment, the display devices Da ...
It has been explained that the contents displayed by Dd and the contents of the information transmitted from the transmission device 2 are the same.
There are cases where the amount of information that can be displayed by a to Dd is different from the amount of information that can be provided by the information providing device mounted on the vehicle. In this case, the display devices Da to D
The information generated by the display information generating apparatus 1 to be displayed at d and the information generated by the display information generating apparatus 1 to be transmitted from the transmitting apparatus 2 may be different.

Further, in the present embodiment, the microphones Ma1 to M1.
a3, microphones Mb1 to Mb3, microphones Mc1 to Mc3, microphone Md1
~ Since the analog signal output from Md3 is converted into a digital signal for processing, a semiconductor memory or the like capable of recording the digital signal for a predetermined period is further provided, so that there is no signal deterioration and a computer is used. Data can be easily collected, organized, and confirmed later.

Further, in the present embodiment, the microphones Ma1 to M1 that sense sound and output sound signals in order to detect the vehicle.
a3, microphones Mb1 to Mb3, microphones Mc1 to Mc3, microphone Md1
Although the example of using ~ Md3 has been shown, the present invention is not limited to this, and may be applied to the case of using a sensor type vehicle detection device using, for example, a CCD camera, infrared rays, or the like, and a device capable of detecting the presence of the vehicle. Even if there is, it is needless to say that it is possible to achieve the object of the present invention to prevent a collision due to the encounter of vehicles at an intersection.

Further, when a remote control type signal controller communicatively connected to the control center for managing road traffic is installed in the vicinity, the display information generating apparatus 1 according to the present embodiment. It is also possible to monitor the traffic condition near the intersection Cr at the control center by connecting the remote control type signal controller, or the display information generating device 1 and the control center by wire or wirelessly.

According to the present embodiment, the display devices Da to Dd are installed on the priority road R1 and the non-priority road R2, respectively.
In order to display information regarding traffic regulation on the display devices Da to Dd according to the traveling states of the vehicle V1 traveling on the priority road R1 and the vehicle V2 traveling on the non-priority road R2, the vehicle enters the intersection Cr from both roads. Appropriate information such as warnings and instructions can be provided to a vehicle that is in motion, and collision accidents such as encounters at the intersection when entering an intersection can be avoided.

Further, since the display information generating device 1 detects the occurrence of a vehicle accident, it provides information on the accident to the vehicle entering the intersection Cr and calls attention to the further accident. It is possible to prevent secondary disasters such as.

In addition, the display information generating apparatus 1 has a microphone Ma1.
.About.Ma3, microphones Mb1 to Mb3, microphones Mc1 to Mc3, and microphones Md1 to Md3 based on sound signals output from the display device Da.
Since the information to be displayed by Dd is generated, the cost is lower and the power consumption is lower than that of the sensor type vehicle detection device.

Further, since the display devices Da to Dd are variable displays capable of performing display corresponding to the display information output by the display information generating device 1, it is possible to display appropriate contents depending on the situation. it can.

Further, in order to output the information about the traffic regulation and the information about the accident through the information providing device mounted on the vehicle, in addition to the display devices Da to Dd, for example, it is mounted on the vehicle. Information can be provided to passengers of a vehicle by video or audio on a monitor, car stereo, or the like used in a car navigation system.

[0069]

According to the first and sixth aspects of the present invention, appropriate warnings and instructions can be given according to the traveling conditions of vehicles entering an intersection, and both vehicles traveling on their respective roads can be provided. A collision prevention system and a display information generation device that can provide information and can avoid the occurrence of an accident such as a collision at the time of entering an intersection can be realized.

According to the second and seventh inventions, the passengers of a vehicle that may travel in the vicinity of the accident site are provided with information regarding the fact that the accident has occurred and the traffic regulations associated with the accident. It is possible to realize a collision prevention system and a display information generation device that can call attention and prevent a secondary disaster from occurring.

According to the third and eighth inventions, a collision prevention system using a sound collecting microphone or the like, which is cheaper and more power-saving than a sensor type vehicle detection device using a CCD camera, infrared rays, etc., A display information generating device can be realized.

According to the fourth aspect of the invention, it is possible to realize a collision prevention system capable of displaying appropriate contents according to the situation.

According to the fifth and ninth inventions, in addition to the first or second display means installed on the road, a warning, an instruction, etc. at the time of entering the intersection can be displayed through the on-vehicle information providing device. Information on traffic can be provided to passengers. For example, it can be output on a monitor installed in the vehicle used in a car navigation system and can be output as voice on a car stereo, etc. Also, a collision accident etc. occurs at an intersection. In this case, it is possible to realize a collision prevention system and a display information generation device that can provide information regarding an accident.

[Brief description of drawings]

FIG. 1 is an external view showing a form in which a collision prevention system according to the present invention is applied to an intersection.

FIG. 2 is a block diagram showing a configuration of a collision prevention system according to the present invention.

FIG. 3 is a block diagram showing a configuration of a display information generating device.

FIG. 4 is a block diagram showing a configuration of a vehicle information generation unit.

FIG. 5 is a graph showing an example of the relationship between the volume level of a sound signal detected by a microphone and time.

FIG. 6 is a schematic diagram showing an example of the form of a display device.

FIG. 7 is a schematic diagram showing an example of another form of a display device.

FIG. 8 is a flowchart for explaining an example of an operation in the case where the display information generation device controls a display device visible from a vehicle traveling on a priority road.

FIG. 9 is a flowchart for explaining an example of an operation in the case where the display information generation device controls a display device that is visible from a vehicle traveling on a non-priority road.

[Explanation of symbols]

1 Display information generator 2 transmitter 3 Information provision device 4 Accident detection device Cr intersection Da, Db, Dc, Dd display device Ma1, Ma2, Ma3 microphones Mb1, Mb2, Mb3 microphones Mc1, Mc2, Mc3 Microphone Md1, Md2, Md3 microphones R1 priority road R2 non-priority road ST building

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B60R 21/00 B60R 21/00 628F G01H 3/08 G01H 3/08 G08B 21/00 G08B 21/00 H G08G 1/00 G08G 1/00 J 1/09 1/09 R 1/095 1/095 L (72) Inventor Takehiko Higashi 1-3-3 Shimaya, Konohana-ku, Osaka-shi, Osaka Sumitomo Electric Industries, Ltd. Osaka Works F-term (reference) 2G064 AA14 AB13 AB21 BD02 CC41 5C086 AA54 BA22 CA09 CB20 DA08 DA40 EA15 EA45 FA07 FA17 5H180 AA01 CC11 DD02 EE15 HH15 HH21 JJ06 JJ09 JJ22 JJ24 LL04 LL06 LL15

Claims (9)

[Claims] 1. A collision prevention system for preventing a collision of a vehicle at an intersection formed by a first road and a second road, comprising: a first vehicle existing on the first road and a second vehicle existing on the second road. Vehicle detection means for detecting a vehicle, first display means and second display means for displaying information regarding traffic regulation, and the first display means based on the detection result detected by the vehicle detection means. A collision prevention system, comprising: information to be displayed and information to be displayed by the second display means, each of which is to generate information according to a traveling state of the first vehicle and the second vehicle. 2. An accident detection means for detecting an accident of a vehicle based on the detection result, and a generation means for generating information on the detected accident to be displayed on the first display means and the second display means. The method according to claim 1, further comprising:
The collision prevention system described in. 3. The collision prevention system according to claim 1, wherein the vehicle detection means detects the first vehicle and the second vehicle based on a sound signal. 4. The first display means and the second display means,
The collision prevention system according to claim 1, wherein the collision prevention system is a variable display capable of performing a display corresponding to the information generated by the generation means. 5. The detection result, which is mounted on a vehicle, comprises a receiving means for receiving information, and an output means for outputting the received information, and comprises an information providing device for providing the passengers of the vehicle with the information. The collision prevention system according to any one of claims 1 to 4, further comprising: a generation unit configured to generate information to be provided to the passenger, and a transmission unit configured to transmit the generated information. 6. A traffic regulation for displaying on a first display device visible on a first road on a first road and a second display device visible on a second vehicle on a second road. In a display information generation device that generates information, a reception unit that receives a signal regarding the first vehicle and the second vehicle, a vehicle detection unit that detects the first vehicle and the second vehicle based on the received signal, and the first Display information generation, characterized by comprising: a generation unit configured to generate information displayed on the display device and information displayed on the second display device, respectively, in accordance with traveling states of the first vehicle and the second vehicle. apparatus. 7. An accident detecting means for detecting an accident of a vehicle based on the detection result, and a generating means for generating information on the detected accident to be displayed on the first display device and the second display device. 7. The method according to claim 6, further comprising:
The display information generation device described in 1. 8. The display information generating device according to claim 6, wherein the vehicle detection means detects the first vehicle and the second vehicle based on a sound signal. 9. Based on the detection result, a generation means for generating information to be output by an information providing device mounted on a vehicle and providing information to a passenger of the vehicle, and the generated information. 9. The display information generating device according to claim 6, further comprising: a transmitting unit that transmits to the providing device.